An electronic device, such as a watch, has a crown assembly having a shaft and a user-rotatable crown. The user-rotatable crown may include a conductive cap that is mechanically and electrically coupled to the shaft and functions as an electrode. The conductive cap may be coupled to the shaft using solder or another conductive attachment mechanism. The shaft may electrically couple the conductive cap to a processing unit of the electronic device. One or more additional electrodes may be positioned on the exterior surface of the electronic device. The conductive cap is operable to be contacted by a finger of a user of the electronic device while another electrode is positioned against skin of the user. The processing unit of the electronic device is operable to determine a biological parameter, such as an electrocardiogram, of the user based on voltages at the electrodes.

Aspects of the technology provide a symbiotic graphical display on a client device such as a smartwatch. The system includes at least one emissive display element and at least one non-emissive display element. The display elements are arrayed in layers or other configurations such that content or other information is concurrently aligned across the respective display surfaces of the different elements. A first set of content is rendered using the non-emissive display element while a second set of content is rendered using the emissive display element. Depending on characteristics or features of a given content item, that item may be rendered by one or both of the display elements. Certain content may be transitioned from the emissive display element to the non-emissive display element according to a time threshold or other criteria.

A push button device including a supporting member which is provided with a through hole and in which a recess section is provided outside the through hole, an operation member which includes a shaft section that is slidably inserted into the through hole, and a head section that is provided on an outer end of the shaft section and slidably fitted into the recess section, a first filter which is provided in the recess section and arranged at a position surrounded by an annular first groove section into which an outer circumferential convex section of the head section is fitted and the outer circumferential convex section, and a second filter which is provided in the head section and arranged at a position surrounded by an annular second groove section into which an inner circumferential convex section of the recess section is fitted and the inner circumferential convex section.

A method of an optical sensor apparatus which is to be used with a controlling device arranged for controlling an object having a long shape and flexible form of a material, includes: using a light emitting circuit to generate and output a light ray to a surface of a portion of the object; sensing the light ray reflected from the surface for multiple times to generate multiple images; detecting at least one motion image in the generated multiple images; and, determining a motion, an offset, or a rotation angle of the object, which is controlled by the thread controlling device, according to the detected at least one motion image.

Various embodiments of the present invention relate to an electronic device and, more specifically, to a rotatable member and an electronic device comprising same. Various embodiments of the present invention may provide a structure for limiting movement of a rotatable member, comprising: a housing; an edge part disposed on one surface of the housing; a wheel structure which is spaced apart from the edge part on the one surface of the housing by a predetermined distance and is rotatably installed along the edge part; and a ring structure, disposed in a space formed between the wheel structure and the edge part, for coupling the wheel structure and the edge part to each other, wherein at least a part of the ring structure is supported by the wheel structure so that the horizontal movement of the ring structure is limited, and at least a part of the ring structure has a hook and is supported by the edge part so that the wheel structure is pressed toward the housing due to the bending of the ring structure.

A wrist device includes: a first input detector that detects a first input operation; a second input detector that is different from the first input detector and that detects a second input operation; a cover that is movable between a first position and a second position, the cover in the first position exposing the first input detector, the cover in the second position covering the first input detector; and at least one processor that receives the first input operation and the second input operation. The processor receives the second input operation as a valid operation in a case where the cover is in the second position.

An electronic timepiece with a first and second electric motors for driving time indicating hands with a set of gear wheels, and a microcontroller connected to the motion sensor and controlling each motor. A motion sensor includes a movable element arranged to move freely inside a structure connected to the timepiece movement. As a function of the position and movement of the moving element inside the housing, a first and second electric signals, different from each other, are generated by the motion sensor for the microcontroller in a defined time period to determine whether the timepiece is in use. If only one electric signal is detected by the microcontroller in the defined time period, the timepiece changes into a sleep mode, by stopping at least the first electric motor intended to drive the seconds hand.

A method of controlling a watch-type mobile terminal having a touch bezel includes performing communication with an external device via a wireless communication unit; executing a first contact application stored in a memory; displaying a contact list on a display unit while executing the first contact application; sensing a drag touch input on the display unit while executing the first contact application; scrolling the contact list in response to sensing the drag touch input on the display unit while executing the first contact application; sensing a rotation touch input on a touch bezel located on an edge of the watch-type mobile terminal while executing the first contact application, wherein a direction of the drag touch input is different from a direction of the rotation touch input; displaying a quick scroll pop-up screen on the display unit when a speed of the rotation touch input on the touch bezel located on the edge of the watch-type mobile terminal is faster than a predetermined speed while executing the first contact application; and displaying a different screen on the display unit that is different than a screen where the quick scroll pop-up screen is displayed when a speed of the rotation input on the touch bezel located on the edge of the watch-type mobile terminal is slower than the predetermined speed while executing the first contact application.

An electronic device, such as a watch, has a variable friction mechanism for providing variable frictional feedback as an input mechanism, such as a crown, is rotated. The variable frictional feedback may correspond to operational states, events, or other conditions at the electronic watch. The variable frictional feedback may be provided by changing a frictional force between the crown and the variable friction mechanism. The variable friction mechanism may include a friction element adapted to contact a shaft of the crown and an actuator adapted to change a frictional force between the friction element and the shaft.

A push button device including a supporting member which is provided with a through hole and in which a recess section is provided outside the through hole, an operation member which includes a shaft section that is slidably inserted into the through hole, and a head section that is provided on an outer end of the shaft section and slidably fitted into the recess section, a first filter which is provided in the recess section and arranged at a position surrounded by an annular first groove section into which an outer circumferential convex section of the head section is fitted and the outer circumferential convex section, and a second filter which is provided in the head section and arranged at a position surrounded by an annular second groove section into which an inner circumferential convex section of the recess section is fitted and the inner circumferential convex section.