WATCH BAND WITH ADJUSTABLE FIT

Abstract

Watch bands can be provided with an ability to dynamically adjust the fit of a watch against a wrist of a user. One or more of a variety of tensioners can be provided with a shape-memory alloy that responds to a stimulus to adjust a fit of the band. Such stimulus can be from user or actively applied by the watch.

Claims

1. A watch band comprising: a first end portion configured to releasably connect to a first side of a watch housing; a first tensioner comprising a shape-memory alloy configured to controllably adjust a length of the first end portion; a second end portion configured to releasably connect to a second side of the watch housing; a second tensioner comprising the shape-memory alloy configured to controllably adjust a length of the second end portion; and a middle portion between the first end portion and the second end portion, the middle portion being stretchable to adjust a length of the watch band.

2. The watch band of claim 1, further comprising a cover extending continuously to surround the first tensioner and the second tensioner and defining the middle portion.

3. The watch band of claim 2, wherein: the first end portion further comprises a first lug and a first anchor each having a fixed position with respect to corresponding first portions of the cover, wherein the first tensioner adjustably connects the first lug to the first anchor; and the second end portion further comprises a second lug and a second anchor each having a fixed position with respect to corresponding second portions of the cover, wherein the second tensioner adjustably connects the second lug to the second anchor.

4. The watch band of claim 3, wherein: the first end portion further comprises multiple additional first tensioners of the shape-memory alloy connecting the first lug to the first anchor; and the second end portion further comprises multiple additional second tensioners of the shape-memory alloy connecting the second lug to the second anchor.

5. The watch band of claim 3, wherein a first portion of the cover is interposed between the first anchor and the first lug, and a second portion of the cover is interposed between the second anchor and the second lug.

6. The watch band of claim 2, wherein the cover comprises an elastic polymer.

7. The watch band of claim 1, wherein the first tensioner and the second tensioner are configured to respond to a stimulus to adjust a fastening force of the watch band on a wrist of a user.

8. The watch band of claim 1, wherein: the first tensioner is configured to receive a first electrical current to controllably adjust the length of the first end portion by generating heat within the first tensioner; and the second tensioner is configured to receive a second electrical current to controllably adjust the length of the second end portion by generating heat within the second tensioner.

9. A watch band comprising: a cover defining: a first end portion configured to releasably connect to a first side of a watch housing; a second end portion configured to releasably connect to a second side of the watch housing; a first edge extending from the first end portion to the second end portion; and a second edge extending from the first end portion to the second end portion; and a tensioner extending within the cover from the first end portion to the second end portion and along a path that extends alternatingly towards each of the first edge and the second edge, the tensioner comprising a shape-memory alloy configured to controllably adjust a length of the watch band.

10. The watch band of claim 9, further comprising a first lug within the first end portion and a second lug within the second end portion, wherein the tensioner is connected to the first lug and the second lug.

11. The watch band of claim 9, wherein: the tensioner is a first tensioner; the path is a first path; and the watch band further comprises a second tensioner extending within the cover from the first end portion to the second end portion and along a second path that extends alternatingly towards each of the first edge and the second edge, the second tensioner comprising the shape-memory alloy configured to controllably adjust the length of the watch band.

12. The watch band of claim 11, wherein the first tensioner and the second tensioner cross each other multiple times along the length of the watch band.

13. The watch band of claim 9, wherein the cover comprises an elastic polymer.

14. A watch band comprising: a cover; an anchor within the cover; and a tensioning assembly within the cover and comprising: a lever configured to rotate about a pivot; a tensioner comprising a shape-memory alloy; and a cable extending from the lever to the anchor, wherein the tensioner is operable to controllably actuate the lever and adjust a length of the watch band.

15. The watch band of claim 14, wherein: the tensioner is a first tensioner; the tensioning assembly further comprises: a pawl configured to engage the lever at a rotational orientation of the lever; and a second tensioner comprising the shape-memory alloy configured to controllably actuate the pawl to release the lever.

16. The watch band of claim 14, wherein: the lever is a first lever; the pivot is a first pivot; the tensioning assembly further comprises a second lever configured to rotate about a second pivot; the tensioner is further configured to actuate the second lever; and the cable further extends from the second lever to the anchor.

17. The watch band of claim 16, wherein: the tensioner is a first tensioner; the tensioning assembly further comprises: a first pawl configured to engage the first lever at a rotational orientation of the first lever; a second tensioner comprising the shape-memory alloy configured to controllably actuate the first pawl to release the first lever; a second pawl configured to engage the second lever at a rotational orientation of the second lever; and a third tensioner comprising the shape-memory alloy configured to controllably actuate the second pawl to release the second lever.

18. The watch band of claim 14, wherein: the anchor is a first anchor; the tensioning assembly is a first tensioning assembly; the tensioner is a first tensioner; and the cover defines: a first end portion configured to releasably connect to a first side of a watch housing and containing the first tensioning assembly, wherein the first tensioner is operable to adjust the length of the watch band by adjusting a length of the first end portion; a second end portion configured to releasably connect to a second side of the watch housing and containing a second tensioning assembly configured to controllably adjust a length of the second end portion; and a middle portion between the first end portion and the second end portion, the middle portion being stretchable to adjust a length of the watch band.

19. The watch band of claim 14, wherein the cover comprises an elastic polymer.

20. The watch band of claim 14, wherein a portion of the cover is interposed between the anchor and the tensioning assembly.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Certain features of the subject technology are set forth in the appended claims. However, for purpose of explanation, several embodiments of the subject technology are set forth in the following figures.

[0008] FIG. 1 illustrates a perspective view of a watch on a wrist of a user, according to some embodiments of the present disclosure.

[0009] FIG. 2 illustrates a side view of a watch with adjustable fit capabilities, according to some embodiments of the present disclosure.

[0010] FIG. 3 illustrates a side view of a watch with adjustable fit capabilities, according to some embodiments of the present disclosure.

[0011] FIG. 4 illustrates a side view of a watch with adjustable fit capabilities, according to some embodiments of the present disclosure.

[0012] FIG. 5 depicts a simplified block diagram of a watch, according to some embodiments of the present disclosure.

[0013] FIG. 6 illustrates a top view of a watch band in a relaxed configuration, according to some embodiments of the present disclosure.

[0014] FIG. 7 illustrates a top view of the watch band of FIG. 6 in an elongated configuration, according to some embodiments of the present disclosure.

[0015] FIG. 8 illustrates a top view of the watch band of FIGS. 6 and 7 in a contracted configuration, according to some embodiments of the present disclosure.

[0016] FIG. 9 illustrates a top view of a watch band in a relaxed configuration, according to some embodiments of the present disclosure.

[0017] FIG. 10 illustrates a top view of the watch band of FIG. 10 in an elongated configuration, according to some embodiments of the present disclosure.

[0018] FIG. 11 illustrates a top view of the watch band of FIGS. 10 and 11 in a contracted configuration, according to some embodiments of the present disclosure.

[0019] FIG. 12 illustrates a top view of a watch band in a relaxed configuration, according to some embodiments of the present disclosure.

[0020] FIG. 13 illustrates a front view of a tensioning assembly of the watch band of FIG. 12 in a relaxed configuration, according to some embodiments of the present disclosure.

[0021] FIG. 14 illustrates a top view of the tensioning assembly of the watch band of FIGS. 12 and 13 in a contracted and locked configuration, according to some embodiments of the present disclosure.

[0022] FIG. 15 illustrates a top view of the tensioning assembly of the watch band of FIGS. 12-14 in a contracted and unlocked configuration, according to some embodiments of the present disclosure.

DETAILED DESCRIPTION

[0023] The detailed description set forth below is intended as a description of various configurations of the subject technology and is not intended to represent the only configurations in which the subject technology may be practiced. The appended drawings are incorporated herein and constitute a part of the detailed description. The detailed description includes specific details for the purpose of providing a thorough understanding of the subject technology. However, it will be clear and apparent to those skilled in the art that the subject technology is not limited to the specific details set forth herein and may be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form in order to avoid obscuring the concepts of the subject technology.

[0024] Embodiments described herein relate to systems and methods for dynamic adjustment of the fit of wearable electronic devices. It should be appreciated that the various embodiments described herein, as well as functionality, operation, components, and capabilities thereof may be combined with other elements, embodiments, structures and the like, and so any physical, functional, or operational discussion of any element or feature is not intended to be limited solely to a particular embodiment to the exclusion of others.

[0025] As noted above, many portable electronic devices may be removably attached to a user. In some examples, a heart rate sensor may be attached to a user's chest by a strap. In another example, a smart watch or a fitness device can be attached to a user's wrist by donning the watch with a watch band and/or joining free ends of a conventional watch band together. In other examples, a clasp or an elasticated band may optionally be used to secure the watch. In another example, a portable audio player may be secured to a user's arm by inserting the player into an armband case.

[0026] Although many embodiments are described herein with reference to wrist bands for attaching a wrist-worn electronic device to a user, one may appreciate that other form factors may be favored in other embodiments. In other words, the methods, systems, and techniques described herein with illustrative reference to wrist-worn devices may be equally applied to non-wrist worn devices. For example, in other embodiments, devices may be configured to attach to other limbs or body portions (e.g., necklaces, arm bands, waistbands, car hooks, finger rings, anklets, toc rings, chest wraps, head bands, etc.). Furthermore, other embodiments described herein may be applied to dynamically adjust the fit of an electronic device to a non-user object such as a charging stand or station. In other embodiments, an electronic device can be fit to another biological subject such as an animal (e.g., pet collar).

[0027] As noted above, many conventional watch bands may be uncomfortable, painful, or bothersome if improperly fit to a user. For example, a user's skin and/or hair may be pinched or pulled if a conventional watch band is improperly fit. In another example, a user may be irritated by a watch that slides up and down a user's wrist and/or rotates about the user's wrist during use.

[0028] In other cases, the fit of a conventional watch band may be different and/or may be perceived to be different given different situations. For example, in humid conditions, the fit of a band may be perceived to be tighter. In another example, a user who is sweating may perceive the fit of a band to be looser. In many cases, these problems can be exacerbated during periods of heightened activity, such as while running or playing sports.

[0029] Despite the prevalence of issues associated with improperly fit bands, adjusting the size or fit of conventional watch bands often requires multiple steps, specialized tools, and/or technical expertise. For example, a metal link band may require specialized tools to remove one or more links of the band to resize the band. In other cases, a leather band with a deployment clasp may need to be physically cut to size in order to resize the band.

[0030] In other cases, watch bands may have limited fit adjustment increments available. For example, a conventional watch band may space sizing eyelets approximately 8 mm apart. In some cases, a user may prefer a fit corresponding to a location between two eyelets. In some examples, especially for users having relatively small wrists, an error of +4 mm (e.g., example of error halfway between too tight and too loose) can correspond to an error upwards of +5% of the circumference of that user's wrist, which, for many users, may be intolerable.

[0031] As a result, users of conventional wristwatches and/or fitness/health tracking devices may select a tolerable (although not optimally comfortable) fit, reserving tighter bands for fitness/health tracking devices and looser bands for conventional wristwatches.

[0032] However, as noted above, some wearable electronic devices, such as smart watches, may be multi-purpose devices. For example, many smart watches provide both fitness/health tracking and timekeeping functionality. Thus, many users may wear a smart watch exclusively, instead of periodically switching between wearing a traditional wristwatch and a separate fitness/health tracking device. In these examples, a user may prefer the fit of a smart watch to vary with use. For example, a user may prefer a looser fit in a timekeeping mode and a tighter fit in a fitness/health tracking mode.

[0033] As may be appreciated, the inconvenience associated with repeated resizing and reattachment of a conventional watch band may contribute to diminishing use of a wearable electronic device, which may, in turn, precipitate a customer retention problem for the manufacturer thereof. In other examples, such as for wearable electronic devices configured to collect health-related information (e.g., pulse rate, blood oxygen saturation, blood pressure, insulin levels, etc.) or to provide health-related notifications (e.g., prescription timing reminders, medical alerts, medical identification numbers, etc.), discontinued use of the wearable electronic device may lead to more serious consequences such as health problems, medical emergencies, and/or incomplete or inconsistent medial data collection. An ability to adjust a band dynamically may improve the accuracy of health measurements. For example, an adjustment to a band can provide contracting to improve engagement with the wearer for improvements to, for example, heart rate measurement accuracy. By further example, an ability to adjust a band dynamically may be employed to provide a notification or other feedback to the user, for example by performing a squeeze or other force onto the user.

[0034] Accordingly, many embodiments described herein relate to systems and methods for dynamic adjustment of the fit of the wearable electronic devices.

[0035] For example, certain embodiments described herein take the form of methods for adjusting the fit of a wearable electronic device secured by a band to a user. Features of a band can provide a capability to automatically adjust a tightness of a band without active user input. For example, a shape-memory alloy can be provided with a capability to alter the fit of a band in response to heat emitted by a user wearing the band.

[0036] By further example, the watch can generate a signal with an instruction to adjust the fit of the band, selecting an operational mode (e.g., tightening mode, loosening mode, flexibility mode, rigid mode, etc.) of a tension controller coupled to electronic device, and actuating the shape-memory alloy based on the instruction.

[0037] The term tensioner and related phrases and terminology is used herein to generally refer to structural component of a band that changes at least one feature thereof to adjust a fit of the band on a wrist or other portion of a user. The term tension controller and related phrases and terminology is used herein to generally refer to a circuit, apparatus, controller, or program code executed by a processor, that is configured to cause, either directly or indirectly, tension in a band or strap coupled to an electronic device housing to increase or decrease. For example, a tension controller can apply a stimulus to a tensioner comprising a shape-memory alloy.

[0038] In some examples, a tensioner comprising a shape-memory alloy and associated with and/or coupled to the watch can also be coupled to a portion of the band that is configured to compress in response to heat conditions. For example, a shape-memory alloy can be formed in a longitudinal (e.g., serpentine) pattern within one or more portions of a band. Body heat of a user and/or heat generated by the watch can be applied to the shape-memory alloy to alter its length and thereby increase or decrease the tightness of the band.

[0039] In other examples, a tensioner comprising a shape-memory alloy and associated with and/or coupled to the watch can also be coupled to a portion of the band that is configured to change an overall shape in response to heat conditions. For example, a shape-memory alloy can be formed along one or more portions of a band. Body heat of a user and/or heat generated by the watch can be applied to the shape-memory alloy to change its shape and thereby increase or decrease the tightness of the band.

[0040] In other examples, a tensioner comprising a shape-memory alloy and associated with and/or coupled to the watch can also be coupled to a portion of the band that is configured to change an overall shape in response to heat conditions. For example, a shape-memory alloy can be formed within a thickness of at least a portion of the watch band. Body heat of a user and/or heat generated by the watch can be applied to the shape-memory alloy to change its thickness and thereby increase or decrease the tightness of the band.

[0041] These and other embodiments are discussed below with reference to FIGS. 1-15. However, those skilled in the art will readily appreciate that the detailed description given herein with respect to these figures is for explanatory purposes only and should not be construed as limiting.

[0042] FIG. 1 depicts a perspective view of a watch attached by a band to a user. In the illustrated embodiment, watch 100 is implemented as a portable electronic device that is worn on the wrist of a user 102. Other embodiments can implement the watch differently. For example, the watch can be a smart phone, a gaming device, a digital music player, a sports accessory device, a medical device, navigation assistant, accessibility device, a device that provides time and/or weather information, a health assistant, and other types of electronic device suitable for attaching to a user.

[0043] Watch 100 includes a housing 104 and a display 106. Housing 104 can form an outer surface or partial outer surface and protective case for one or more internal components of watch 100. In the illustrated embodiment, housing 104 is formed into a substantially rectangular shape, although this configuration is not required and other shapes are possible in other embodiments.

[0044] In some examples, display 106 may incorporate an input device configured to receive user input. Optionally, a user can provide input to display 106 to indicate the user's intention to increase the tightness of the fit of the wearable device. In other examples, the user can provide a force input to display 106, the magnitude of which can correspond to the magnitude of tightness increase in the fit the user desires to be implemented by watch 100.

[0045] Display 106 can be implemented with any suitable technology, including, but not limited to, a multi-touch sensing touchscreen that uses liquid crystal display (LCD) technology, light emitting diode (LED) technology, organic light-emitting display (OLED) technology, organic electroluminescence (OEL) technology, or another type of display technology. In many embodiments, display 106 can be disposed below a protective cover glass formed from a rigid and scratch resistant material such as ion-implanted glass, laminated glass, or sapphire.

[0046] As noted above, display 106 can incorporate or be disposed proximate to an input sensor. For example, in some embodiments, display 106 can also include one or more contact sensors to determine the position of one or more contact locations on a top surface of display 106. In some embodiments, display 106 can also include one or more force-sensitive elements (not shown) to detect a magnitude of force applied to the top surface of display 106.

[0047] Watch 100 can include within housing 104 a processor, a memory, a power supply and/or battery, network communications, sensors, display screens, acoustic elements, input/output ports, haptic elements, digital and/or analog circuitry for performing and/or coordinating tasks of watch 100, and so on. In some examples, watch 100 can communicate with a separate electronic device via one or more proprietary and/or standardized wired and/or wireless interfaces. For simplicity of illustration, watch 100 is depicted in FIG. 1 without many of these elements, each of which may be included, partially, optionally, or entirely, within housing 104.

[0048] Watch 100 can be coupled to user 102 via a band 108 that loops around the user's wrist. Band 108 can be formed from a compliant material, or into a compliant structure, that is configured to easily contour to a user's wrist, while retaining stiffness sufficient to maintain the position and orientation of the watch on the user's wrist. The material selected for band 108 may vary from embodiment to embodiment. For example, in certain cases, band 108 can be formed from metal, such as a band formed into a metal mesh. In other embodiments, band 108 can be formed from an organic material such as leather. In further examples, band 108 can be formed from an inorganic material such as nylon. In still further embodiments, materials such as plastic, rubber, or other fibrous, organic, polymeric, or synthetic materials may be used.

[0049] As can be appreciated, the relative stiffness of a band can impact the tightness with which the band may be fit to a user's wrist. For example, the more flexible the band, the tighter band 108 should be secured to prevent watch 100 from sliding, rotating, or otherwise displacing on the user's wrist.

[0050] In some embodiments, band 108 can be formed, at least in part, from a polymer, such as a fluoroelastomeric polymer, having a Shore durometer selected for having flexibility suitable for easily contouring to a user's wrists while maintaining sufficient stiffness to maintain support of watch 100 when attached to the wrist of user 102. For example, bands of certain embodiments may have a Shore A durometer ranging from 60 to 80 and/or a tensile strength greater than 12 MPa.

[0051] In some embodiments, a fluoroelastomeric polymer (or other suitable polymer) can be doped or treated with one or more other materials. For example, the polymer can be doped with an agent configured to provide the polymer with a selected color, odor, taste, hardness, elasticity, stiffness, reflectivity, refractive pattern, texture and so on. In other examples, the doping agent can confer other properties to the fluoroelastomeric polymer including, but not necessarily limited to, electrical conductivity and/or insulating properties, magnetic and/or diamagnetic properties, chemical resistance and/or reactivity properties, infrared and/or ultraviolet light absorption and/or reflectivity properties, visible light absorption and/or reflectivity properties, antimicrobial and/or antiviral properties, olcophobic and/or hydrophobic properties, thermal absorption properties, pest repellant properties, colorfast and/or anti-fade properties, deodorant properties, antistatic properties, medicinal properties, liquid exposure reactivity properties, low and/or high friction properties, hypoallergenic properties, and so on.

[0052] In some embodiments, one or more doping agents may be used. In further embodiments, the doping agents associated with one area of band 108 may be different from the doping agents associated with another area of the bands. In one example, a band may have a low friction dopant added to the portion of a band that faces a user's wrist (e.g., bottom surface) while having a high reflectivity dopant added to the portion of the band that faces outwardly (e.g., top surface).

[0053] Other embodiments described herein include configurations in which band 108 is formed, at least in part, from a non-compliant material into a compliant structure. For example, a metallic mesh can be used to form band 108. In other embodiments, the band can be formed by joining a number of metal links. In other embodiments, the band can be formed by joining a number of glass or crystal links.

[0054] In other embodiments, band 108 can be formed form a combination of compliant and non-compliant materials.

[0055] In some examples, band 108 can be removably coupled to housing 104. For example, in certain embodiments, band 108 can be at least partially looped around a watch pin that is configured to insert within lugs extending from the body of housing 104. In other examples, band 108 can be configured to slide within and be retained by two or more channels within external sidewalls of housing 104. In other examples, band 108 can be looped through and aperture in housing 104. In other cases, band 108 can be riveted, screwed, or otherwise attached to housing 104 via one or more mechanical fasteners. In still further embodiments, additional removable couplings between band 108 and housing 104 are possible.

[0056] In other examples, band 108 can be permanently coupled to housing 104. For example, in some cases, band 108 may be formed as an integral portion of housing 104. In other cases, band 108 can be rigidly adhered to housing 104 via an adhesive. In still further embodiments, band 108 can be welded, soldered, or chemically bonded to housing 104. In other embodiments, additional permanent couplings between band 108 and housing 104 are possible.

[0057] As noted above, housing 104 may be rigid and can be configured to provide structural support and impact resistance for electronic or mechanical components contained therein. A rigid housing is not necessarily required for all embodiments and, in some examples, watch 100 can have a housing may be flexible. Furthermore, although watch housings are typically formed to take a rectangular shape, this is not required and other shapes are possible. For example, certain housings may take a circular shape.

[0058] In other embodiments, watch 100 can include one or more sensors (not shown) positioned on a bottom surface of housing 104. Sensors utilized by watch 100 can vary from embodiment to embodiment. Suitable sensors can include temperature sensors, electrodermal sensors, blood pressure sensors, heart rate sensors, respiration rate sensors, oxygen saturation sensors, plethysmographic sensors, activity sensors, pedometers, blood glucose sensors, body weight sensors, body fat sensors, blood alcohol sensors, dietary sensors, and so on.

[0059] In many cases, sensors such as biometric sensors can collect certain health-related information non-invasively. For example, watch 100 can include a sensor that is configured to measure changes in (or an amount of) light reflected from a measurement site (e.g., wrist) of user 102. In one embodiment, the biometric sensor such as a PPG sensor can include a light source for emitting light onto or into the wrist of user 102 and an optical sensor to detect light exiting the wrist of user 102. Light from the light source may be scattered, absorbed, and/or reflected throughout the measurement sight as a function of various physiological parameters or characteristics of user 102. For example, the tissue of the wrist of user 102 can scatter, absorb, or reflect light emitted by the light source differently depending on various physiological characteristics of the surface and subsurface of the user's wrist.

[0060] In many cases a PPG sensor can be used to detect a user's heart rate and blood oxygenation. For example, during each complete heartbeat, a user's subcutaneous tissue can distend and contract, alternatingly increasing and decreasing the light absorption capacity of the measurement site. In these embodiments, the optical sensor of the PPG can collect light exiting the measurement site and generate electrical signals corresponding to the collected light. Thereafter, the electrical signals can be conveyed as raw data to watch 100, which in turn can process the raw data into health data 110. The raw data can be based on information about the collected light, such as the chromaticity and/or luminance of the light. In some cases, the health data 110 can be shown on display 106 as biometric feedback to user 102.

[0061] However, certain sensors such as PPG sensors may be susceptible to noise associated with ambient light, surface conditions of the measurement site (e.g., cleanliness, hair, perspiration, etc.), proximity of the optical sensor and/or light source to the measurement site, and motion artifacts caused by the relative motion between watch 100 and user 102. As a result, if watch 100 is not snugly fit to user 102 (at least while the PPG sensor is obtaining a measurement), the health data 110 obtained from the sensor may be sub-optimal (e.g., insufficient or insignificant magnitude) as a direct result of the improper fit. Alternatively, if watch 100 is snugly fit to user 102, the health data 110 obtained from the sensor may be of substantially improved quality, magnitude, and clarity.

[0062] It will be understood that in certain embodiments, watch 100 may dynamically resize band 108 and/or the fit of watch 100 for reasons unrelated to sensor data quality. For example, as mentioned above, a shape-memory alloy (not shown) can be coupled to watch 100. In some examples, the shape-memory alloy can be included within housing 104. In other examples, the shape-memory alloy can be included within band 108. In still further examples, a portion of the shape-memory alloy can be included within housing 104 and a portion of the shape-memory alloy can be included within band 108. In some examples, the shape-memory alloy can be coupled to band 108 and to housing 104. For example, the shape-memory alloy can take the form of a coupling and/or a lug by which band 108 couples to housing 104.

[0063] FIGS. 2-4 depict side views of a watch 200 with a band 208 for attaching to a user. Watch 200 can include one or more of the features discussed herein with respect to watch 100. For example, as with the embodiment depicted in FIG. 1, watch 200 can include a housing 204 and a display that may incorporate an input device configured to receive touch input, force input, or other input from a user. Housing 204 may also include one or more buttons or input ports (not shown). Housing 204 can be permanently or removably attached to a band 208.

[0064] As with the embodiment depicted in FIG. 1, band 208 can be formed from a compliant material or into a compliant structure that is configured to easily contour to a user's wrist, while retaining stiffness sufficient to maintain the position and orientation of watch 200 on the user's wrist. Band 208 is illustrated as a single, continuous structure extending from opposing ends of housing 204. Additionally or alternatively, band 208 can include overlapped components to form a closed loop around a user's wrist. In these examples, the separate components can be affixed together with a traditional or conventional attachment mechanism. For example, in some embodiments, a buckling clasp can be used. In other examples a pin and eyelet attachment mechanism can be used. In some embodiments, band 208 includes multiple (e.g., two) band portions, wherein one end of each band portion can attach to housing 204, and the other ends of the separate band portions can attach to each other, for example with a clasp, lock, latch, or other engagement mechanism, to form a loop. One or more band portions can include one or more tension control mechanisms as further described herein, such that the length or other dimension of each band portion can be controllably adjusted.

[0065] Watch 200 can include a tension controller (not illustrated) in order to provide dynamic adjustment of the fit of watch 200. As with other embodiments described herein, the tension controller may alter the fit of watch 200 in a number of ways. For example, the tension controller can adjust one or more dimensions of band 208 coupled to housing 204 of watch 200. In another example, the tension controller can adjust a coupling between band 208 and housing 204 of watch 200. In another example the tension controller can adjust the position of housing 204 of watch 200 relative to band 208. In still other embodiments, other adjustments are possible.

[0066] In some embodiments, as shown in FIG. 2, the length of band 208 can be increased or decreased in order to adjust the fit of watch 200. This type of adjustment can be referred to as a fastening force. In these embodiments, the shorter the length of band 208, the tighter the fit of watch 200 may be. Similarly, the longer the length of band 208, the looser the fit of watch 200 may be. Length adjustments to band 208 are shown in FIG. 2 with bi-directional arrows. As shown, the length need not change along every portion of band 208.

[0067] In some embodiments, as shown in FIG. 3, the shape of band 208 can be adjusted in order to adjust the fit of watch 200. This type of adjustment can be referred to as a coiling force. For example, a cross-sectional shape of band 208 can be defined by an inner periphery of band 208, such as along a user engagement surface of band 208. Band 208 can define multiple cross-sectional dimensions 210, defined by a distance between opposing inner surfaces of band 208. It will be understood that housing 204 can also provide an end that defines the cross-sectional dimension 210. Where a change of the shape of band 208 changes at least one cross-sectional dimension 210 of band 208, the fit of watch 200 can be altered by changing a force applied by the portions of band 208 that define the altered cross-sectional dimension 210. In these embodiments, the shorter the cross-sectional dimension 210 of band 208, the tighter the fit of watch 200 may be. Similarly, the greater the cross-sectional dimension 210 of band 208, the looser the fit of watch 200 may be. Shape adjustments to band 208 are shown in FIG. 3 with bi-directional arrows. As shown, the shape need not change along every portion of band 208.

[0068] In some embodiments, as shown in FIG. 4, the thickness of band 208 can be increased or decreased in order to adjust the fit of watch 200. This type of adjustment can be referred to as a pressure. In these embodiments, the thicker band 208, the tighter the fit of watch 200 may be. Similarly, the thinner band 208, the looser the fit of watch 200 may be. Thickness adjustments to band 208 are shown in FIG. 4 with a bi-directional arrows. As shown, the thickness need not change along every portion of band 208.

[0069] It will be understood that any given band can provide one or more of the adjustments illustrated in FIGS. 2-4 and/or other adjustments. It will be further understood that the adjustments illustrated in FIGS. 2-4 and/or other adjustments may apply equally or equivalently to other band and/or watch embodiments described herein. More generally, it should be appreciated that the various examples and embodiments presented herein can apply equally or equivalently to many band and/or watches and no single embodiment, or adjustments thereto by a tension controller or the watch itself, should be considered as limited to that single embodiment.

[0070] FIG. 5 depicts a simplified block diagram of a watch 300 configured to be coupled to a user with a band about the user's wrist. Watch 300 can one or more processing devices 306, memory 308, one or more input/output (I/O) devices, one or more sensors 310 (e.g., biometric sensors, environmental sensors, etc.), one or more displays 312, one or more power source(s) (not shown), one or more physical and/or rotary input devices 314, one or more touch sensing device(s) 316, one or more acoustic input and/or output devices 318, one or more haptic output device(s) 320, one or more a network communication interface(s) 322, and one or more tension controllers 324. Some embodiments can also include additional components.

[0071] Display 312 may provide an image or video output for watch 300. Display 312 may also provide an input surface for one or more input devices such as a touch sensing device 316, force sensing device, temperature sensing device, and/or a fingerprint sensor. Display 312 may be any size suitable for inclusion at least partially within the housing of watch 300 and may be positioned substantially anywhere on watch 300. In some embodiments, display 312 can be protected by a cover glass formed from a scratch-resistant material (e.g., sapphire, zirconia, glass, and so on) that may form a substantially continuous external surface with the housing of watch 300.

[0072] Processing device(s) 306 can control or coordinate some or all of the operations of watch 300. Processing device 306 can communicate, either directly or indirectly with substantially all of the components of watch 300. For example, a system bus or signal line or other communication mechanisms can provide communication between processing device 306, memory 308, sensor(s) 310, power source(s), network communication interface 322, and/or haptic output device 320.

[0073] One or more processing device(s) 306 can be implemented as any electronic device capable of processing, receiving, or transmitting data or instructions. For example, processing device(s) 306 can each be a microprocessor, a central processing unit (CPU), an application-specific integrated circuit (ASIC), a digital signal processor (DSP), or combinations of such devices. As described herein, the term processing device is meant to encompass a single processor or processing unit, multiple processors, multiple processing units, or other suitably configured computing element or elements.

[0074] Memory 308 can store electronic data that can be used by watch 300. For example, a memory can store electrical data or content such as, for example, audio and video files, documents and applications, device settings and user preferences, timing and control signals or data for haptic output device 320, data structures or databases, and so on. Memory 308 can be configured as any type of memory. By way of example only, the memory can be implemented as random access memory, read-only memory, Flash memory, removable memory, or other types of storage elements, or combinations of such devices.

[0075] One or more I/O device(s) can transmit and/or receive data to and from a user or another electronic device. I/O device(s) can include a touch sensing input surface such as one or more buttons, one or more microphones or speakers, and/or one or more ports such as a microphone port.

[0076] Watch 300 may also include one or more sensors 310 positioned substantially anywhere on watch 300. Sensor(s) 310 may be configured to sense substantially any type of characteristic such as, but not limited to, images, pressure, light, touch, force, temperature, position, motion, and so on. For example, sensor(s) 310 may be an image sensor, a temperature sensor, a light or optical sensor, an atmospheric pressure sensor, a humidity sensor, a magnet, a gyroscope, an accelerometer, and so on. In other examples, watch 300 may include one or more health sensors. In some examples, the health sensors can be disposed on a bottom surface of the housing of watch 300.

[0077] The power source can be implemented with any device capable of providing energy to watch 300. For example, the power source can be one or more batteries or rechargeable batteries, or a connection cable that connects the remote control device to another power source such as a wall outlet. In other examples, wireless power can be used.

[0078] Network communication interface 322 can facilitate transmission of data to or from other electronic devices across standardized or proprietary protocols. For example, a network communication interface can transmit electronic signals via a wireless and/or wired network connection. Examples of wireless and wired network connections include, but are not limited to, cellular, Wi-Fi, Bluetooth, infrared, and Ethernet.

[0079] Haptic output device 320 can be implemented as any suitable device configured to provide force feedback, vibratory feedback, tactile sensations, and the like. For example, in one embodiment, haptic output device 320 may be implemented as a linear actuator configured to provide a punctuated haptic feedback, such as a tap or a knock.

[0080] As noted above, watch 300 can include a tension controller 324. In some embodiments, tension controller 324 can be an analog, digital, or integrated circuit configured to apply a stimulus to cause tension (either directly or indirectly) to be applied to, or relieved form, the band. For example, tension controller 324 can apply heat and/or another stimulus directly and/or indirectly to the band to induce a temperature and/or a temperature change and cause the band to adjust a feature thereof and thereby adjust a fit on a user.

[0081] As noted above, the signal to change the fit of watch 300 can be received from any number of sources. For example, in certain embodiments, the signal can be received from secondary electronic device through network communication interface 322. In other embodiments, the signal can be received as direct user input. For example, a user can provide input to touch sensing device 316 of watch 300 to indicate to watch 300 and/or tension controller 324 the user's desire for the fit of the device to change, either with increased tightness or decreased tightness.

[0082] Referring now to FIGS. 6-8, a watch band can provide an ability to adjust a fit on a user along discrete portions of the band. For example, a watch band can include at least one strand of a shape-memory alloy that changes a characteristic thereof in response to a stimulus, such as heat and/or an induced temperature or temperature change. The shape-memory alloy can provide an ability to reversibly change the fit of the watch band.

[0083] As used herein, a shape-memory alloy can include nickel-titanium (NiTi or nitinol), copper-aluminum-nickel, FeMnSi, CuZnAl, CuAlNi, and the like. The shape-memory alloy can exist in one of two available phases (i.e., austenite and martensite), with three different crystal structures (i.e. twinned martensite, detwinned martensite, and austenite). The shape-memory alloy can change from austenite to martensite upon cooling starting from a temperature below a threshold temperature. The shape-memory alloy can change from martensite to austenite upon heating starting from a temperature above a threshold temperature.

[0084] FIG. 6 illustrates a view of a watch band 400 for securing a housing to a user. Watch band 400 can be a band for use with a watch having one or more features described herein with respect to watch 100, watch 200, and/or watch 300. For example, as with the embodiment depicted in FIG. 1, watch band 400 can be coupled to a housing with a display that may incorporate an input device configured to receive touch input, force input, or other input from a user. The housing can be permanently or removably attached to watch band 400.

[0085] Watch band 400 can include a first end portion 432, a middle portion 434, and a second end portion 436. Middle portion 434 can be between and connected to each of first end portion 432 and second end portion 436. First end portion 432 can include or define a first end 402 for releasably connecting watch band 400 to a first side of a housing (not shown), and second end portion 436 can include or define a second end 404 for releasably connecting watch band 400 to a second side of a housing.

[0086] Each of first end portion 432 and second end portion 436 can include a tensioning assembly 450. Each tensioning assembly 450 can include a tensioner 424 comprising one or more segments of a shape-memory alloy configured to controllably adjust a length of the corresponding end portion. For example, each tensioning assembly 450 can further include a lug 422 and an anchor 426. Lug 422 can be positioned at a corresponding end (e.g., first end 402 or second end 404). In some embodiments, lugs 422 can optionally provide structure for facilitating connection to a housing of the watch. For example, lugs 422 can provide a substantially rigid structure for insertion into a channel and/or for other engagement with the housing. In some embodiments, lugs 422 can provide operative and/or communicative connection with the housing of the watch, for example, to receive a stimulus, signal, instruction, command, electrical current, and/or heat from the housing of the watch. Anchor 426 can be positioned closer to the middle portion 434 than the corresponding lug 422 to which it is connected. For example, lug 422 and anchor 426 can be positioned at or near the boundaries of the corresponding end portion (e.g., first end portion 432 or second end portion 436).

[0087] Each tensioning assembly 450 can further include one or more tensioners 424. Each of tensioner(s) 424 can include a segment, strand, portion, wire, cable, column, beam, or other structure comprising a shape-memory alloy. The shape-memory alloy of tensioner(s) 424 can be configured to respond to a stimulus and adjust a fit of watch band 400. For example, tensioners 424 can include one or more shape-memory alloys that respond to a stimulus, such as heat. For example, the user and/or the watch can apply a stimulus, such as heat and/or an induced temperature or temperature change to the shape-memory alloys of tensioner(s) 424. In some embodiments, a stimulus can be actively applied, such as by a tension controller operated at the housing of the watch to direct electrical current, emit heat, and/or induce a temperature or temperature change in the shape-memory alloys of tensioner(s) 424. In some embodiments, a stimulus can be applied passively, such as when watch band 400 is worn by a user, when the user raises the user's own body temperature, and/or when a user increases an amount of heat emitted.

[0088] Tensioner(s) 424 can connect lug 422 of tensioning assembly 450 to anchor 426 of tensioning assembly 450. A distance between lug 422 and anchor 426 can be defined by tensioner(s) 424 and the configuration thereof. For example, tensioner(s) 424 can extend and contract to alter the distance between lug 422 and anchor 426. Accordingly, the length of the corresponding end portion (e.g., first end portion 432 or second end portion 436) can be defined, at least in part, by the configuration of tensioner(s) 424 between lug 422 and anchor 426.

[0089] Watch band 400 can include a cover 412 defining at least a portion of first end portion 432, middle portion 434, and second end portion 436. Cover 412 can extend along the length of watch band 400, for example from first end 402 to second end 404. Cover 412 can include an elastic material, such as an elastic polymer (e.g., a fluoroelastomeric polymer). The selected material can have a Shore durometer selected for having flexibility suitable for easily contouring to a user's wrists. For example, bands of certain embodiments may have a Shore A durometer ranging from 60 to 80 and/or a tensile strength greater than 12 MPa.

[0090] In some embodiments, cover 412 can surround each of the components of tensioning assembly 450, such as lugs 422, tensioner(s) 424, and/or anchors 426. In some embodiments, portions of cover 412 can be interposed between lug 422 and anchor 426 of tensioning assembly 450. As such, lug 422 and anchor 426 can each maintain a given position with respect to cover 412. Rather than allowing lug 422 and anchor 426 to move within cover 412, movement of lug 422 with respect to anchor 426 can cause elastic deformation (e.g., compression or expansion) of cover 412.

[0091] As shown in FIG. 7, watch band 400 can facilitate increases to the total length thereof by stretching provided along the middle portion 434. The stretching can be done in response to an external force (e.g., tension) applied to watch band 400. In some embodiments, cover 412 can be a sole structure along the middle portion 434. For example, between two different anchors 426, cover 412 can define the length of watch band 400, such that the middle portion 434 is provided with an ability to stretch. The end portions can have a limited ability to stretch, for example based on the extension limit of tensioner(s) 424. As such, external forces can be applied to the ends with a responsive stretching achieved primarily along middle portion 434. Such stretching along middle portion 434 can result in an increase in the total length of watch band 400 (e.g., between first end 402 and second end 404). Such stretching can further facilitate donning and removal of a watch by increasing the total length of watch band 400 so that the watch can pass over a hand of the user.

[0092] It will be understood that, following the configuration illustrated in FIG. 7, watch band 400 can be transitioned and/or returned to another configuration, such as the relaxed configuration illustrated in FIG. 6. For example, cover 412 and/or another structure can bias features of watch band 400 to the relaxed configuration.

[0093] As shown in FIG. 8, in response to any one or more stimulus, the shape-memory alloy of tensioner(s) 424 can provide an ability to reversibly change the fit of the watch band by changing a characteristic of tensioner(s) 424. For example, tensioner(s) 424 can controllably adjust a length of each of the end portions (e.g., first end portion 432 or second end portion 436) and therefore a total length of watch band 400. For example, tensioner(s) 424 can controllably to adjust a total length of watch band 400 in a manner similar to the change illustrated in FIG. 2. By further example, tensioner(s) 424 can controllably to adjust a shape of watch band 400 in a manner similar to the change illustrated in FIG. 3. By further example, tensioner(s) 424 can controllably to adjust a thickness of watch band 400 in a manner similar to the change illustrated in FIG. 4. Such changes can represent a transition to a particular phase (e.g., austenite or martensite) of the shape memory alloy. Other components of the watch band 400 (e.g., lugs 422 and anchors 426) can adjust to match or otherwise accommodate the change in tensioner(s) 424, thereby adjusting the corresponding end portion. Accordingly, tensioner(s) 424 can respond to a stimulus to adjust a fit of watch band 400 on a wrist of the user.

[0094] It will be understood that, following the configuration illustrated in FIG. 8, watch band 400 can be transitioned and/or returned to another configuration, such as the relaxed configuration illustrated in FIG. 6. For example, the stimulus can be removed, and the shape memory alloy can return to a particular phase (e.g., austenite or martensite).

[0095] Accordingly, watch band 400 can transition between a relaxed configuration (FIG. 6) with a first length, and elongated configuration (FIG. 7) with a second length that is greater than the first length) and a contracted configuration (FIG. 8) with a third length that is less than the first length and the second length.

[0096] Referring now to FIGS. 9-11, a watch band can provide an ability to adjust a fit on a user along discrete portions of the band. For example, a watch band can include at least one strand of a shape-memory alloy that changes a characteristic thereof in response to a stimulus, such as heat and/or an induced temperature or temperature change. The shape-memory alloy can provide an ability to reversibly change the fit of the watch band.

[0097] FIG. 9 illustrates a view of a watch band 500 for securing a housing to a user. Watch band 500 can be a band for use with a watch having one or more features described herein with respect to watch 100, watch 200, and/or watch 300. For example, as with the embodiment depicted in FIG. 1, watch band 500 can be coupled to a housing with a display that may incorporate an input device configured to receive touch input, force input, or other input from a user. The housing can be permanently or removably attached to watch band 500.

[0098] Watch band 500 can include opposing ends. A first end 502 can be provided for releasably connecting watch band 500 to a first side of a housing (not shown), and a second end 504 can be provided for releasably connecting watch band 500 to a second side of a housing.

[0099] Watch band 500 can include one or more tensioners 524 comprising one or more segments of a shape-memory alloy configured to controllably adjust a length of the corresponding end portion. For example, watch band 500 can further include lugs 522. Each lug 522 can be positioned at a corresponding end (e.g., first end 502 or second end 504). In some embodiments, lugs 522 can optionally provide structure for facilitating connection to a housing of the watch. For example, lugs 522 can provide a substantially rigid structure for insertion into a channel and/or for other engagement with the housing. In some embodiments, lugs 522 can provide operative and/or communicative connection with the housing of the watch, for example, to receive a stimulus, signal, instruction, command, electrical current, and/or heat from the housing of the watch.

[0100] Each of tensioner(s) 524 can include a segment, strand, portion, wire, cable, column, beam, or other structure comprising a shape-memory alloy. The shape-memory alloy of tensioner(s) 524 can be configured to respond to a stimulus and adjust a fit of watch band 500. For example, tensioners 524 can include one or more shape-memory alloys that respond to a stimulus, such as heat. For example, the user and/or the watch can apply a stimulus, such as heat and/or an induced temperature or temperature change to the shape-memory alloys of tensioner(s) 524. In some embodiments, a stimulus can be actively applied, such as by a tension controller operated at the housing of the watch to direct electrical current, emit heat, and/or induce a temperature or temperature change in the shape-memory alloys of tensioner(s) 524. In some embodiments, a stimulus can be applied passively, such as when watch band 500 is worn by a user, when the user raises the user's own body temperature, and/or when a user increases an amount of heat emitted.

[0101] Tensioner(s) 524 can connect lugs 522 to each other. A distance between lugs 522 can be defined by tensioner(s) 524 and the configuration thereof. For example, tensioner(s) 524 can extend and contract to alter the distance between lugs 522. Accordingly, the length of the watch band 500 can be defined, at least in part, by the configuration of tensioner(s) 524 between lugs 522.

[0102] Watch band 500 can include a cover 512. Cover 512 can extend along the length of watch band 500, for example from first end 502 to second end 504. Cover 512 can include an elastic material, such as an elastic polymer (e.g., a fluoroelastomeric polymer). The selected material can have a Shore durometer selected for having flexibility suitable for easily contouring to a user's wrists. For example, bands of certain embodiments may have a Shore A durometer ranging from 60 to 80 and/or a tensile strength greater than 12 MPa.

[0103] Cover 512 can further define a first edge 506 on a first lateral side of watch band 500 and second edge 508 on a second lateral side of watch band 500, opposite the first lateral side. First edge 506 and second edge 508 can extend between and/or to each of first end 502 and second end 504. Tensioner(s) 524 can extend along paths that alternatingly extend towards first edge 506 and second edge 508 as tensioner(s) 524 extend along the length of watch band 500 (e.g., within cover 512). For example, segments of each of tensioner(s) 524 can extend diagonally in directions that are transverse to a longitudinal axis of watch band 500. While alternating diagonal directions are shown in FIGS. 9-11, it will be understood that tensioner(s) 524 can extend in a variety of directions, such as serpentine, curve-linear, undulating, helically, and the like. Tensioners 524 can overlap and/or cross each other at one or more crossings 544. Tensioner(s) 524 can change directions of extension at apexes 542 that are at or near first edge 506 and/or second edge 508.

[0104] In some embodiments, cover 512 can surround each of the components of tensioning assembly 550, such as lugs 522 and/or tensioner(s) 524. In some embodiments, portions of cover 512 can be interposed between lugs 522. As such, lugs 522 can each maintain a given position with respect to cover 512. Rather than allowing lug 522 to move within cover 512, movement of lug 522 with respect to each other can cause elastic deformation (e.g., compression or expansion) of cover 512.

[0105] In some embodiments, portions of cover 512 can be interposed between tensioner(s) 524. As such, tensioner(s) 524 can each maintain a given position with respect to cover 512. Rather than allowing tensioner(s) 524 to move within cover 512, extension and/or contraction of tensioner(s) 524 can cause clastic deformation (e.g., compression or expansion) of cover 512. For example, cover 512 can define channels therein that receive tensioner(s) 524.

[0106] As shown in FIG. 10, watch band 500 can facilitate increases to the total length thereof by stretching provided along its length. The stretching can be done in response to an external force (e.g., tension) applied to watch band 500. In some embodiments, tensioner(s) 524 can alter their shape to accommodate stretching. For example, tensioner(s) 524 can extend and/or bend to provide a greater length between ends thereof. By further example, the apexes 542 can move laterally towards each other, and/or the crossings 544 can move longitudinally away from each other. Such stretching can result in an increase in the total length of watch band 500 (e.g., between first end 502 and second end 504). Such stretching can further facilitate donning and removal of a watch by increasing the total length of watch band 500 so that the watch can pass over a hand of the user.

[0107] It will be understood that, following the configuration illustrated in FIG. 10, watch band 500 can be transitioned and/or returned to another configuration, such as the relaxed configuration illustrated in FIG. 9. For example, cover 512, tensioner(s) 524, and/or another structure can bias features of watch band 500 to the relaxed configuration.

[0108] As shown in FIG. 11, in response to any one or more stimulus, the shape-memory alloy of tensioner(s) 524 can provide an ability to reversibly change the fit of the watch band by changing a characteristic of tensioner(s) 524. For example, tensioner(s) 524 can controllably adjust a total length of watch band 500. For example, tensioner(s) 524 can controllably to adjust a total length of watch band 500 in a manner similar to the change illustrated in FIG. 2. By further example, tensioner(s) 524 can controllably to adjust a shape of watch band 500 in a manner similar to the change illustrated in FIG. 3. By further example, tensioner(s) 524 can controllably to adjust a thickness of watch band 500 in a manner similar to the change illustrated in FIG. 4. Such changes can represent a transition to a particular phase (e.g., austenite or martensite) of the shape memory alloy. For example, tensioner(s) 524 can contract and/or bend to provide a shorter length between ends thereof. By further example, the apexes 542 can move laterally away from each other, and/or the crossings 544 can move longitudinally towards each other. Accordingly, tensioner(s) 524 can respond to a stimulus to adjust a fit of watch band 500 on a wrist of the user.

[0109] It will be understood that, following the configuration illustrated in FIG. 11, watch band 500 can be transitioned and/or returned to another configuration, such as the relaxed configuration illustrated in FIG. 9. For example, the stimulus can be removed, and the shape memory alloy can return to a particular phase (e.g., austenite or martensite).

[0110] Accordingly, watch band 500 can transition between a relaxed configuration (FIG. 9) with a first length, and elongated configuration (FIG. 10) with a second length that is greater than the first length) and a contracted configuration (FIG. 11) with a third length that is less than the first length and the second length.

[0111] Referring now to FIGS. 12-15, a watch band can provide an ability to adjust a fit on a user along discrete portions of the band. For example, a watch band can include at least one strand of a shape-memory alloy that changes a characteristic thereof in response to a stimulus, such as heat and/or an induced temperature or temperature change. The shape-memory alloy can provide an ability to reversibly change the fit of the watch band.

[0112] FIG. 12 illustrates a view of a watch band 600 for securing a housing to a user. Watch band 600 can be a band for use with a watch having one or more features described herein with respect to watch 100, watch 200, and/or watch 300. For example, as with the embodiment depicted in FIG. 1, watch band 600 can be coupled to a housing with a display that may incorporate an input device configured to receive touch input, force input, or other input from a user. The housing can be permanently or removably attached to watch band 600.

[0113] Watch band 600 can include a first end portion 632, a middle portion 634, and a second end portion 636. Middle portion 634 can be between and connected to each of first end portion 632 and second end portion 636. First end portion 632 can include or define a first end 602 for releasably connecting watch band 600 to a first side of a housing (not shown), and second end portion 636 can include or define a second end 604 for releasably connecting watch band 600 to a second side of a housing.

[0114] Each of first end portion 632 and second end portion 636 can include a tensioning assembly 650. Each tensioning assembly 650 can include a cable 670 connected to one or more segments of a shape-memory alloy (not shown) and configured to controllably adjust a length of the corresponding end portion in response to the activity of the shape-memory alloy. For example, each tensioning assembly 650 can further include a lug 622 and an anchor 626. Lug 622 can be positioned at a corresponding end (e.g., first end 602 or second end 604). In some embodiments, lugs 622 can optionally provide structure for facilitating connection to a housing of the watch. For example, lugs 622 can provide a substantially rigid structure for insertion into a channel and/or for other engagement with the housing. In some embodiments, lugs 622 can provide operative and/or communicative connection with the housing of the watch, for example, to receive a stimulus, signal, instruction, command, electrical current, and/or heat from the housing of the watch. Anchor 626 can be positioned closer to the middle portion 634 than the corresponding lug 622 to which it is connected. For example, lug 622 and anchor 626 can be positioned at or near the boundaries of the corresponding end portion (e.g., first end portion 632 or second end portion 636).

[0115] Watch band 600 can include a cover 612 defining at least a portion of first end portion 632, middle portion 634, and second end portion 636. Cover 612 can extend along the length of watch band 600, for example from first end 602 to second end 604. Cover 612 can include an elastic material, such as an elastic polymer (e.g., a fluoroelastomeric polymer). The selected material can have a Shore durometer selected for having flexibility suitable for easily contouring to a user's wrists. For example, bands of certain embodiments may have a Shore A durometer ranging from 60 to 80 and/or a tensile strength greater than 12 MPa.

[0116] In some embodiments, cover 612 can surround each of the components of tensioning assembly 650, such as lugs 622, cable(s) 670, and/or anchors 626. In some embodiments, portions of cover 612 can be interposed between lug 622 and anchor 626 of tensioning assembly 650. As such, lug 622 and anchor 626 can each maintain a given position with respect to cover 612. Rather than allowing lug 622 and anchor 626 to move within cover 612, movement of lug 622 with respect to anchor 626 can cause elastic deformation (e.g., compression or expansion) of cover 612.

[0117] Watch band 600 can facilitate increases to the total length thereof by stretching provided along the middle portion 634. The stretching of watch band 600 can be similar to that illustrated in FIG. 7 with respect to watch band 400. The stretching can be done in response to an external force (e.g., tension) applied to watch band 600. In some embodiments, cover 612 can be a sole structure along the middle portion 634. For example, between two different anchors 626, cover 612 can define the length of watch band 600, such that the middle portion 634 is provided with an ability to stretch. The end portions can have a limited ability to stretch, for example based on the extension limit of cables(s) 670. As such, external forces can be applied to the ends with a responsive stretching achieved primarily along middle portion 634. Such stretching along middle portion 634 can result in an increase in the total length of watch band 600 (e.g., between first end 602 and second end 604). Such stretching can further facilitate donning and removal of a watch by increasing the total length of watch band 600 so that the watch can pass over a hand of the user.

[0118] It will be understood that, following such stretching, watch band 600 can be transitioned and/or returned to another configuration, such as the relaxed configuration illustrated in FIG. 12. For example, cover 612 and/or another structure can bias features of watch band 600 to the relaxed configuration.

[0119] As shown in FIG. 13, each tensioning assembly 650 can further include one or more band tensioners 624 (e.g., first tensioner). Band tensioner 624 can include a segment, strand, portion, wire, cable, column, beam, or other structure comprising a shape-memory alloy. The shape-memory alloy of band tensioner 624 can be configured to respond to a stimulus and adjust a fit of watch band 600. For example, band tensioner 624 can include one or more shape-memory alloys that respond to a stimulus, such as heat. For example, the user and/or the watch can apply a stimulus, such as heat and/or an induced temperature or temperature change to the shape-memory alloys of band tensioner 624. In some embodiments, a stimulus can be actively applied, such as by a tension controller operated at the housing of the watch to direct electrical current, emit heat, and/or induce a temperature or temperature change in the shape-memory alloys of band tensioner 624. In some embodiments, a stimulus can be applied passively, such as when watch band 600 is worn by a user, when the user raises the user's own body temperature, and/or when a user increases an amount of heat emitted.

[0120] Cables(s) 670 can connect lug 622 of tensioning assembly 650 to anchor 626 of tensioning assembly 650. A distance between lug 622 and anchor 626 can be defined by band tensioner 624 and the configuration thereof. For example, band tensioner 624 can be connected to one or more levers 656, which can rotate and/or otherwise move to actuate the cable(s) 670 and alter the distance between lug 622 and anchor 626. Accordingly, the length of the corresponding end portion can be defined, at least in part, by the configuration of band tensioner 624 and the length of cable(s) 670 between lug 622 and anchor 626.

[0121] Tensioning assembly 650 can further include a case 690 that can be positioned over a portion of lug 622 and components contained therein, such as band tensioner 624, lever(s) 656, and the like. Cable(s) 670 can extend through case 690, such as through openings therein. As such, a portion can extend from lug 622 through case 690, and to anchor 626.

[0122] As shown in FIG. 14, in response to any one or more stimulus, the shape-memory alloy of band tensioner 624 can provide an ability to reversibly change the fit of the watch band by changing a characteristic of band tensioner 624. For example, band tensioner 624 can transition to another shape, length, or other configuration. Such changes can represent a transition to a particular phase (e.g., austenite or martensite) of the shape memory alloy. Band tensioner 624 can actuate lever(s) 656 corresponding to the transition in the shape-memory alloy. For example, lever(s) 656 can rotate about a corresponding axis to pull and/or otherwise actuate cable(s) 670 to controllably adjust a length of each of the end portions and therefore a total length of watch band 600. For example, band tensioner 624 can controllably to adjust a total length of watch band 600 in a manner similar to the change illustrated in FIG. 2. By allowing band tensioner 624 to act on lever(s) 656, which in turn acts on cable(s) 670, the activity of band tensioner 624 can be magnified to that the total change in length for the deployed portion of cable(s) 670 is greater than a change in length and/or size of band tensioner 624. Furthermore, the input force applied by band tensioner 624 can be different than the output force applied by cables(s) 670.

[0123] Other components of the watch band 600 (e.g., lugs 622 and anchors 626) can adjust to match or otherwise accommodate the change in band tensioner 624, lever(s) 656, and/or cable(s) 670, thereby adjusting the corresponding end portion. Accordingly, band tensioner 624 can respond to a stimulus to adjust a fit of watch band 600 on a wrist of the user.

[0124] As shown in FIG. 14, tensioning assembly 650 can further include one or more pawls 662 for controllably engaging lever(s) 656. For example, in the contracted configuration, lever(s) 656 can be engaged and/or retained by pawl(s) 662 when actuated by band tensioner 624. For example, lever(s) 656 can move past a ramp of pawl(s) 662 while actuated by band tensioner 624. Pawl(s) 662 can be biased to engage lever(s) 656 by, for example, springs 668. A shoulder or other structure of pawl(s) 662 can block return of lever(s) 656 to a relaxed configuration, even when band tensioner 624 returns to a relaxed configuration. As such, pawl(s) 662 can retain lever(s) 656 and cable(s) 670 in the actuated configuration until released.

[0125] As shown in FIG. 15, each tensioning assembly 650 can further include one or more pawl tensioners 664 (e.g., second tensioners). Pawl tensioner(s) 664 can include a segment, strand, portion, wire, cable, column, beam, or other structure comprising a shape-memory alloy. The shape-memory alloy of pawl tensioner(s) 664 can be configured to respond to a stimulus and adjust one or more pawls 662. For example, pawl tensioner(s) 664 can include one or more shape-memory alloys that respond to a stimulus, such as heat. For example, the user and/or the watch can apply a stimulus, such as heat and/or an induced temperature or temperature change to the shape-memory alloys of pawl tensioner(s) 664. In some embodiments, a stimulus can be actively applied, such as by a tension controller operated at the housing of the watch to direct electrical current, emit heat, and/or induce a temperature or temperature change in the shape-memory alloys of pawl tensioner(s) 664. The stimulus to pawl tensioner(s) 664 can be separate from the stimulus to band tensioner 624, such that actuation of lever(s) 656 is separately controllable from actuation of pawl(s) 662. Such controls can be managed, for example, by a tension controller of the watch.

[0126] It will be understood that, following the configuration illustrated in FIG. 15, watch band 600 can be transitioned and/or returned to another configuration, such as the relaxed configuration illustrated in FIGS. 12 and 13. For example, the stimulus can be removed, the shape memory alloy of band tensioner 624 can return to a particular phase (e.g., austenite or martensite), pawl tensioner(s) 664 can be operated, and/or pawl(s) 662 can be retracted to release lever(s) 656.

[0127] Accordingly, watch band 600 can transition between a relaxed configuration (FIGS. 12 and 13) with a first length, and elongated configuration with a second length that is greater than the first length) and a contracted configuration (FIG. 14) with a third length that is less than the first length and the second length.

[0128] Accordingly, watch bands described herein can be provided with an ability to dynamically adjust the fit of a watch against a wrist of a user. One or more of a variety of tensioners can be provided with a shape-memory alloy that responds to a stimulus to adjust a fit of the band. Such stimulus can be from user or actively applied by the watch.

[0129] Various examples of aspects of the disclosure are described below as clauses for convenience. These are provided as examples, and do not limit the subject technology.

[0130] Clause A: a watch band comprising: a first end portion configured to releasably connect to a first side of a watch housing; a first tensioner comprising a shape-memory alloy configured to controllably adjust a length of the first end portion; a second end portion configured to releasably connect to a second side of the watch housing; a second tensioner comprising the shape-memory alloy configured to controllably adjust a length of the second end portion; and a middle portion between the first end portion and the second end portion, the middle portion being stretchable to adjust a length of the watch band.

[0131] Clause B: a watch band comprising: a cover defining: a first end portion configured to releasably connect to a first side of a watch housing; a second end portion configured to releasably connect to a second side of the watch housing; a first edge extending from the first end portion to the second end portion; and a second edge extending from the first end portion to the second end portion; and a tensioner extending within the cover from the first end portion to the second end portion and along a path that extends alternatingly towards each of the first edge and the second edge, the tensioner comprising a shape-memory alloy configured to controllably adjust a length of the watch band.

[0132] Clause C: a watch band comprising: a cover; an anchor within the cover; and a tensioning assembly within the cover and comprising: a lever configured to rotate about a pivot; a tensioner comprising a shape-memory alloy; and a cable extending from the lever to the anchor, wherein the tensioner is operable to controllably actuate the lever and adjust a length of the watch band.

[0133] One or more of the above clauses can include one or more of the features described below. It is noted that any of the following clauses may be combined in any combination with each other, and placed into a respective independent clause, e.g., clause A, B, or C.

[0134] Clause 1: a cover extending continuously to surround the first tensioner and the second tensioner and defining the middle portion.

[0135] Clause 2: the first end portion further comprises a first lug and a first anchor each having a fixed position with respect to corresponding first portions of the cover, wherein the first tensioner adjustably connects the first lug to the first anchor; and the second end portion further comprises a second lug and a second anchor each having a fixed position with respect to corresponding second portions of the cover, wherein the second tensioner adjustably connects the second lug to the second anchor.

[0136] Clause 3: the first end portion further comprises multiple additional first tensioners of the shape-memory alloy connecting the first lug to the first anchor; and the second end portion further comprises multiple additional second tensioners of the shape-memory alloy connecting the second lug to the second anchor.

[0137] Clause 4: a first portion of the cover is interposed between the first anchor and the first lug, and a second portion of the cover is interposed between the second anchor and the second lug.

[0138] Clause 5: the cover comprises an elastic polymer.

[0139] Clause 6: the first tensioner and the second tensioner are configured to respond to a stimulus to adjust a fastening force of the watch band on a wrist of a user.

[0140] Clause 7: the first tensioner is configured to receive a first electrical current to controllably adjust the length of the first end portion by generating heat within the first tensioner; and the second tensioner is configured to receive a second electrical current to controllably adjust the length of the second end portion by generating heat within the second tensioner.

[0141] Clause 8: a first lug within the first end portion and a second lug within the second end portion, wherein the tensioner is connected to the first lug and the second lug.

[0142] Clause 9: the tensioner is a first tensioner; the path is a first path; and the watch band further comprises a second tensioner extending within the cover from the first end portion to the second end portion and along a second path that extends alternatingly towards each of the first edge and the second edge, the second tensioner comprising the shape-memory alloy configured to controllably adjust the length of the watch band.

[0143] Clause 10: the first tensioner and the second tensioner cross each other multiple times along the length of the watch band.

[0144] Clause 11: the tensioner is a first tensioner; the tensioning assembly further comprises: a pawl configured to engage the lever at a rotational orientation of the lever; and a second tensioner comprising the shape-memory alloy configured to controllably actuate the pawl to release the lever.

[0145] Clause 12: the lever is a first lever; the pivot is a first pivot; the tensioning assembly further comprises a second lever configured to rotate about a second pivot; the tensioner is further configured to actuate the second lever; and the cable further extends from the second lever to the anchor.

[0146] Clause 13: the tensioner is a first tensioner; the tensioning assembly further comprises: a first pawl configured to engage the first lever at a rotational orientation of the first lever; a second tensioner comprising the shape-memory alloy configured to controllably actuate the first pawl to release the first lever; a second pawl configured to engage the second lever at a rotational orientation of the second lever; and a third tensioner comprising the shape-memory alloy configured to controllably actuate the second pawl to release the second lever.

[0147] Clause 14: the anchor is a first anchor; the tensioning assembly is a first tensioning assembly; the tensioner is a first tensioner; and the cover defines: a first end portion configured to releasably connect to a first side of a watch housing and containing the first tensioning assembly, wherein the first tensioner is operable to adjust the length of the watch band by adjusting a length of the first end portion; a second end portion configured to releasably connect to a second side of a watch housing and containing a second tensioning assembly configured to controllably adjust a length of the second end portion; and a middle portion between the first end portion and the second end portion, the middle portion being stretchable to adjust a length of the watch band.

[0148] Clause 15: a portion of the cover is interposed between the anchor and the tensioning assembly.

[0149] As described above, one aspect of the present technology may include the gathering and use of data available from various sources. The present disclosure contemplates that in some instances, this gathered data may include personal information data that uniquely identifies or can be used to contact or locate a specific person. Such personal information data can include demographic data, location-based data, telephone numbers, email addresses, twitter ID's, home addresses, data or records relating to a user's health or level of fitness (e.g., vital signs measurements, medication information, exercise information), date of birth, or any other identifying or personal information.

[0150] The present disclosure recognizes that the use of such personal information data, in the present technology, can be used to the benefit of users. For instance, health and fitness data may be used to provide insights into a user's general wellness, or may be used as positive feedback to individuals using technology to pursue wellness goals.

[0151] The present disclosure contemplates that the entities responsible for the collection, analysis, disclosure, transfer, storage, or other use of such personal information data will comply with well-established privacy policies and/or privacy practices. In particular, such entities should implement and consistently use privacy policies and practices that are generally recognized as meeting or exceeding industry or governmental requirements for maintaining personal information data private and secure. Such policies should be easily accessible by users, and should be updated as the collection and/or use of data changes. Personal information from users should be collected for legitimate and reasonable uses of the entity and not shared or sold outside of those legitimate uses. Further, such collection/sharing should occur after receiving the informed consent of the users. Additionally, such entities should consider taking any needed steps for safeguarding and securing access to such personal information data and ensuring that others with access to the personal information data adhere to their privacy policies and procedures. Further, such entities can subject themselves to evaluation by third parties to certify their adherence to widely accepted privacy policies and practices. In addition, policies and practices should be adapted for the particular types of personal information data being collected and/or accessed and adapted to applicable laws and standards, including jurisdiction-specific considerations. For instance, in the US, collection of or access to certain health data may be governed by federal and/or state laws, such as the Health Insurance Portability and Accountability Act (HIPAA); whereas health data in other countries may be subject to other regulations and policies and should be handled accordingly. Hence different privacy practices should be maintained for different personal data types in each country.

[0152] Despite the foregoing, the present disclosure also contemplates embodiments in which users selectively block the use of, or access to, personal information data. That is, the present disclosure contemplates that hardware and/or software elements can be provided to prevent or block access to such personal information data. For example, in the case of advertisement delivery services, the present technology can be configured to allow users to select to opt in or opt out of participation in the collection of personal information data during registration for services or anytime thereafter. In another example, users can select not to provide mood-associated data for targeted content delivery services. In yet another example, users can select to limit the length of time mood-associated data is maintained or entirely prohibit the development of a baseline mood profile. In addition to providing opt in and opt out options, the present disclosure contemplates providing notifications relating to the access or use of personal information. For instance, a user may be notified upon downloading an app that their personal information data will be accessed and then reminded again just before personal information data is accessed by the app.

[0153] Moreover, it is the intent of the present disclosure that personal information data should be managed and handled in a way to minimize risks of unintentional or unauthorized access or use. Risk can be minimized by limiting the collection of data and deleting data once it is no longer needed. In addition, and when applicable, including in certain health related applications, data de-identification can be used to protect a user's privacy. De-identification may be facilitated, when appropriate, by removing specific identifiers (e.g., date of birth, etc.), controlling the amount or specificity of data stored (e.g., collecting location data a city level rather than at an address level), controlling how data is stored (e.g., aggregating data across users), and/or other methods.

[0154] Therefore, although the present disclosure broadly covers use of personal information data to implement one or more various disclosed embodiments, the present disclosure also contemplates that the various embodiments can also be implemented without the need for accessing such personal information data. That is, the various embodiments of the present technology are not rendered inoperable due to the lack of all or a portion of such personal information data. For example, content can be selected and delivered to users by inferring preferences based on non-personal information data or a bare minimum amount of personal information, such as the content being requested by the device associated with a user, other non-personal information available to the content delivery services, or publicly available information.

[0155] A reference to an element in the singular is not intended to mean one and only one unless specifically so stated, but rather one or more. For example, a module may refer to one or more modules. An element proceeded by a, an, the, or said does not, without further constraints, preclude the existence of additional same elements.

[0156] Headings and subheadings, if any, are used for convenience only and do not limit the invention. The word exemplary is used to mean serving as an example or illustration. To the extent that the term include, have, or the like is used, such term is intended to be inclusive in a manner similar to the term comprise as comprise is interpreted when employed as a transitional word in a claim. Relational terms such as first and second and the like may be used to distinguish one entity or action from another without necessarily requiring or implying any actual such relationship or order between such entities or actions.

[0157] Phrases such as an aspect, the aspect, another aspect, some aspects, one or more aspects, an implementation, the implementation, another implementation, some implementations, one or more implementations, an embodiment, the embodiment, another embodiment, some embodiments, one or more embodiments, a configuration, the configuration, another configuration, some configurations, one or more configurations, the subject technology, the disclosure, the present disclosure, other variations thereof and alike are for convenience and do not imply that a disclosure relating to such phrase(s) is essential to the subject technology or that such disclosure applies to all configurations of the subject technology. A disclosure relating to such phrase(s) may apply to all configurations, or one or more configurations. A disclosure relating to such phrase(s) may provide one or more examples. A phrase such as an aspect or some aspects may refer to one or more aspects and vice versa, and this applies similarly to other foregoing phrases.

[0158] A phrase at least one of preceding a series of items, with the terms and or or to separate any of the items, modifies the list as a whole, rather than each member of the list. The phrase at least one of does not require selection of at least one item; rather, the phrase allows a meaning that includes at least one of any one of the items, and/or at least one of any combination of the items, and/or at least one of each of the items. By way of example, each of the phrases at least one of A, B, and C or at least one of A, B, or C refers to only A, only B, or only C; any combination of A, B, and C; and/or at least one of each of A, B, and C.

[0159] It is understood that the specific order or hierarchy of steps, operations, or processes disclosed is an illustration of exemplary approaches. Unless explicitly stated otherwise, it is understood that the specific order or hierarchy of steps, operations, or processes may be performed in different order. Some of the steps, operations, or processes may be performed simultaneously. The accompanying method claims, if any, present elements of the various steps, operations or processes in a sample order, and are not meant to be limited to the specific order or hierarchy presented. These may be performed in serial, linearly, in parallel or in different order. It should be understood that the described instructions, operations, and systems can generally be integrated together in a single software/hardware product or packaged into multiple software/hardware products.

[0160] In one aspect, a term coupled or the like may refer to being directly coupled. In another aspect, a term coupled or the like may refer to being indirectly coupled.

[0161] Terms such as top, bottom, front, rear, side, horizontal, vertical, and the like refer to an arbitrary frame of reference, rather than to the ordinary gravitational frame of reference. Thus, such a term may extend upwardly, downwardly, diagonally, or horizontally in a gravitational frame of reference.

[0162] The disclosure is provided to enable any person skilled in the art to practice the various aspects described herein. In some instances, well-known structures and components are shown in block diagram form in order to avoid obscuring the concepts of the subject technology. The disclosure provides various examples of the subject technology, and the subject technology is not limited to these examples. Various modifications to these aspects will be readily apparent to those skilled in the art, and the principles described herein may be applied to other aspects.

[0163] All structural and functional equivalents to the elements of the various aspects described throughout the disclosure that are known or later come to be known to those of ordinary skill in the art are expressly incorporated herein by reference and are intended to be encompassed by the claims. Moreover, nothing disclosed herein is intended to be dedicated to the public regardless of whether such disclosure is explicitly recited in the claims. No claim element is to be construed under the provisions of 35 U.S.C. 112, sixth paragraph, unless the element is expressly recited using the phrase means for or, in the case of a method claim, the element is recited using the phrase step for.

[0164] The title, background, brief description of the drawings, abstract, and drawings are hereby incorporated into the disclosure and are provided as illustrative examples of the disclosure, not as restrictive descriptions. It is submitted with the understanding that they will not be used to limit the scope or meaning of the claims. In addition, in the detailed description, it can be seen that the description provides illustrative examples and the various features are grouped together in various implementations for the purpose of streamlining the disclosure. The method of disclosure is not to be interpreted as reflecting an intention that the claimed subject matter requires more features than are expressly recited in each claim. Rather, as the claims reflect, inventive subject matter lies in less than all features of a single disclosed configuration or operation. The claims are hereby incorporated into the detailed description, with each claim standing on its own as a separately claimed subject matter.

[0165] The claims are not intended to be limited to the aspects described herein, but are to be accorded the full scope consistent with the language of the claims and to encompass all legal equivalents. Notwithstanding, none of the claims are intended to embrace subject matter that fails to satisfy the requirements of the applicable patent law, nor should they be interpreted in such a way.