A tethering device includes a primary housing supporting a retraction mechanism; a secondary housing configured to be connected to a tethered object; a retractable tether extending from the retraction mechanism to the secondary housing to movably couple the secondary housing to the primary housing; a first magnet assembly supported by the primary housing; and a second magnet assembly supported by the secondary housing, wherein the second magnet assembly is configured to engage with the first magnet assembly to bias the secondary housing towards the primary housing.

Devices, systems, and methods for multi-band radar sensing are disclosed. In an embodiment, an integrated circuit device includes transmit components and receive components, a low-band transmit interface connected to output a first signal at a low-band frequency, a high-band transmit interface connected to output a second signal at a high-band frequency, a low-band receive interface connected to receive a third signal at the low-band frequency, a high-band receive interface connected to receive a fourth signal at the high-band frequency, and mixers connected to upconvert the first signal at the low-band frequency to the second signal at the high-band frequency for transmission from the high-band transmit interface and to downconvert the fourth signal at the high-band frequency received at the high-band receive interface to a fifth signal at the low-band frequency, wherein the upconversion and the downconversion are implemented using a conversion signal at a conversion frequency.

A protective cover is used for covering and fixing a mobile device selectively fixed to a fastener having a first or second female part. The protective cover includes an elastic protective-cover main body, a first rigid male part and a second rigid male part. The first and second rigid male parts to match first and second female parts of the fastener are selectively engaged with the elastic protective-cover main body. In addition, a protective cover kit is provided to include an elastic protective-cover main body, a rigid male part and a female-part carrier assembly. The female-part carrier assembly includes a universal female part and a female-part carrier. The universal female part, detachably connected with the female-part carrier, is universally used for detachably engaging the first or second connection part of the rigid male part. Thereupon, poor commonality between the male and female parts can be resolved.

A communications node includes an apparel item in the form of a shoulder belt that includes an open state, closed state, and main body. A first portion curvingly extends from the main body. A second portion angularly extends from the main body opposite the first portion. A primary fastener demountably couples the first and second portions together when in the closed state. An antenna element and communications device are positioned within the apparel item. An hub is affixed to the apparel item and configured to receive audio/video input. A battery is positioned adjacent to the apparel item. A control circuit is positioned within the apparel item and coupled to the antenna element, hub, communications device, and battery. The control circuit establishes a self-organizing WAN with a plurality of computing devices each directly, dynamically, and non-hierarchically connected to the WAN; and communicates with the computing devices using the self-organizing WAN.

A wearable mobile phone holder includes a holding part, a base, clamping teeth and a latch. The base is pivotally connected to the holding part through a pivot shaft. The clamping teeth are arranged on the holding part, and the latch is arranged on the base. The plurality of clamping teeth are arranged along a circumferential direction of the pivot shaft. An end of the latch is inserted into a clamping teeth gap between the clamping teeth. The mobile phone can be quickly installed into or removed from the wearable mobile phone holder by only rotating the pressing head. The mobile phone can be tightly clamped and positioned by the spring in the rotary pressing mechanism, which can be easily and quickly operated. The distance between the clamping jaws can be adjusted to adapt to mobile phones of different models and sizes to improve the generality of the holder.

An electronic device may be provided with a display. The display may have a flexible display layer covered by a protective display cover layer. The flexible display layer may be an organic light-emitting diode display layer or other layer with a flexible substrate. The flexible display layer may have a central region with peripheral edges. The central region may be rectangular, may be octagonal, or may have other shapes. Strip-shaped protrusions may extend along each of the peripheral edges of the central region. The strip-shaped protrusions may be bent to provide the protrusions with curved surface profiles. The display cover layer may have a cushion shape with bowed edges that overlap parts of the strip-shaped protrusions, may have curved inner and outer surfaces and/or planar surfaces, may have rounded corners with compound curvature, may have edges with curved surface profiles, and/or may have other configurations.

A protective cover is used for covering and fixing a mobile device selectively fixed to a fastener having a first or second female part. The protective cover includes an elastic protective-cover main body, a first rigid male part and a second rigid male part. The first and second rigid male parts to match first and second female parts of the fastener are selectively engaged with the elastic protective-cover main body. In addition, a protective cover kit is provided to include an elastic protective-cover main body, a rigid male part and a female-part carrier assembly. The female-part carrier assembly includes a universal female part and a female-part carrier. The universal female part, detachably connected with the female-part carrier, is universally used for detachably engaging the first or second connection part of the rigid male part. Thereupon, poor commonality between the male and female parts can be resolved.

The present disclosure provides a method of generating codebook in a wireless communication system with multiple antenna arrays, as well as a wireless communication system, base station and terminal using the codebook for communication. The method comprises steps of: providing a basic codebook which contains multiple pre-coding matrices; and assigning phase offsets to certain pre-coding matrices in the basic codebook to form a codebook with phase offset. The feedback overhead from a client to a base station side is reduced and a good precision of feedback for multi-antenna array is kept by applying the method of generating codebook and using the generated codebook in the wireless communication system, base station and terminal.

A system that includes a wearable monitor for monitoring movement of a user. The wearable monitor includes at least one movement sensor configured to generate at least one measurement signal in response to movement of the user, and a wireless transmitter configured to wirelessly transmit measurement data generated based on the at least one measurement signal. The system includes a portable electronic device configured to wirelessly receive the measurement data transmitted by the wireless transmitter, and generate movement classification data comprising a movement classification for each of a plurality of time windows of the measurement data, wherein the movement classification data is generated based on a machine learned model of human movement.

Provided is a transmitting device for a cart with an auto following function, which can sense the position and moving path of a user and move while following the user.

The transmitting device for a cart provides a sensing and communication function such that the cart with the auto following function can sense and follow the position of the transmitting device. Thus, the cart can sense and follow the position of the transmitting device.

Furthermore, since the transmitting device for a cart can be conveniently worn like a watch, a user's convenience can be improved.