Abstract: A bottom-free stationary bike vehicle includes a first movable structure, a second movable structure, a frame, and a linear mechanism. The first movable structure is turnable with its first end as a fulcrum. The second movable structure is turnable with its first end as a fulcrum. A second end of the first movable structure and a second end of the second movable structure are pivotally connected at a pivot. The frame is connected to the first movable structure. The linear mechanism is connected between the frame and the second movable structure. The length of the linear mechanism can be adjusted to change the angle between the first movable structure and the ground and the angle between the second movable structure and the ground.

Abstract: Devices and methods for making a polymer with a porous layer from a solid piece of polymer are disclosed. In various embodiments, the method includes heating a surface of a solid piece of polymer to a processing temperature and holding the processing temperature while displacing a porogen layer through the surface of the polymer to create a matrix layer of the solid polymer body comprising the polymer and the porogen layer. In at least one embodiment, the method also includes removing at least a portion of the layer of porogen from the matrix layer to create a porous layer of the solid piece of polymer.

Abstract: A device is disclosed that includes multiple channels and multiple processing nodes. Each processing node includes input/output (I/O) ports coupled to the channels and channel control modules coupled to the I/O ports. Each processing node is configured to select, by the channel control module in a first operation, a first I/O port of the I/O ports; communicate a first message, via the first I/O port, to a first processing node over a first channel or a second processing node over a second channel orthogonal to the first channel in a logic representation; select, by the channel control module in a second operation, a second I/O port of the I/O ports; and communicate a second message, via the second I/O port, to a third processing node over a third channel extending in a diagonal direction and non-orthogonal to the first and second channels in the logic representation.

Abstract: A method includes forming a first conductive feature, depositing a graphite layer over the first conductive feature, patterning the graphite layer to form a graphite conductive feature, depositing a dielectric spacer layer on the graphite layer, depositing a first dielectric layer over the dielectric spacer layer, planarizing the first dielectric layer, forming a second dielectric layer over the first dielectric layer, and forming a second conductive feature in the second dielectric layer. The second conductive feature is over and electrically connected to the graphite conductive feature.

Abstract: A data retention circuit includes a flip-flop circuit including a master latch coupled to a slave latch, wherein the slave latch includes a first input terminal and a first output terminal, and a series combination of a retention latch and a level shifter coupled between the first input terminal and the first output terminal. The slave latch is configured to be selectively coupled to the series combination through a first transmission gate responsive to a restore signal.

Abstract: Methods, apparatus and systems for enhanced wireless monitoring of vital signs are described. In one example, a described system comprises: a transmitter configured to transmit a wireless signal through a wireless channel of a venue; a receiver configured to receive the wireless signal through the wireless channel; and a processor. The received wireless signal differs from the transmitted wireless signal due to the wireless channel that is impacted by a periodic motion of a vital sign of an object in the venue. The processor is configured for: obtaining a time series of channel information (CI) of the wireless channel based on the received wireless signal, computing a two dimensional (2D) decomposition of the time series of CI (TSCI), enhancing the 2D decomposition, and monitoring the periodic motion of the vital sign based on the enhanced 2D decomposition.

Abstract: A vehicle trajectory recording system and method for vehicles with a sensor is disclosed. The system includes a sensor arranged on a vehicle; a control module, electrically connected to the sensor and configured to receive a piece of sensing information from the sensor, analyze the sensing information to determine a traveling direction change event of the vehicle, and analyze the traveling direction change event and determine a driving event of the vehicle; and a recording module, electrically connected to the control module and configured to record a position of the vehicle where the vehicle performed the driving event, mark the position of the vehicle on a map where the driving event occurred, and adjust a driving trajectory of the vehicle.

Abstract: A clamp circuit is provided. The clamp circuit includes a major Gallium Nitride (GaN) transistor, a miller GaN transistor, and a capacitor circuit. The major GaN transistor (10) includes a major gate, a major drain, and a major source coupled to a first node. The miller GaN transistor includes a miller gate coupled to a second node, a miller drain coupled to the major gate, and a miller source coupled to the first node. The capacitor circuit is coupled between the major drain and the second node.

Abstract: Systems and methods described herein include a testing apparatus on which a peripheral device may be secured in a predefined, consistent orientation. The peripheral device includes a UWB antenna on a first printed circuit board that is at an angle to a second printed circuit board including one or more positioning sensors. The testing apparatus includes multiple wireless respondents at predefined distances and orientations relative to the peripheral device secured to the testing apparatus. A computing device generates a calibration vector based on measured vectors from the first printed circuit board to the wireless respondents and predetermined vectors from the second printed circuit board to the wireless respondents. The calibration vector is used to calibrate a positioning algorithm of the peripheral device that determines a position and orientation of the peripheral device relative to the peripheral device's environment.

Abstract: A terminal for handling data in a live streaming platform, comprising one or a plurality of processors, wherein the one or plurality of processors execute a machine-readable instruction to perform: requesting event-related data from the live streaming platform; and determining cache strategy according to timing of the progress of the event. According to the above embodiments, the cache strategy may be determined dynamically before, during and after an event. The Server load may be reduced and the responsiveness of the user terminal may also be improved. The auto-switching cache strategy may also minimize potential user misunderstandings. Therefore, the user experience may be improved.

Abstract: A structure includes a first conductive feature in a first dielectric layer; a second dielectric layer over the first dielectric layer; and a second conductive feature extending through the second dielectric layer to physically contact the first conductive feature, wherein the second conductive feature includes a metal adhesion layer over and physically contacting the first conductive feature; a barrier layer extending along sidewalls of the second dielectric layer; and a conductive filling material extending over the metal adhesion layer and the barrier layer, wherein a portion of the conductive filling material extends between the barrier layer and the metal adhesion layer.

Abstract: Conductive vias, semiconductor devices with conductive vias, and methods for fabricating semiconductor devices are provided. A conductive via includes a first end and a second end; a first portion adjacent to the first end; a second portion adjacent to the second; and a middle portion located between the first portion and the second portion, wherein the conductive via is comprised of metal grains, the metal grains in the first portion have a first grain size; the metal grains in the second portion have a second grain size; the metal grains in the middle portion have a third grain size; the first grain size is greater than the third grain size; and the second grain size is greater than the third grain size.

Abstract: A semiconductor package is provided. The semiconductor package includes a semiconductor substrate, a lower interconnect structure, an upper interconnect structure, a conductive pad, and a pillar bump. The lower interconnect structure is formed over the semiconductor substrate. The lower interconnect structure includes a plurality of lower dielectric layers. The lower interconnect structure also includes a plurality of lower metal lines and a plurality of lower metal vias formed in the lower dielectric layers. The upper interconnect structure is formed over the lower interconnect structure. The conductive pad is formed over the upper interconnect structure. The pillar bump structure is in direct contact with the conductive pad. The pillar bump structure includes at least two protrusions protruding toward the conductive pad and laterally separated from each other.

Abstract: A source drive include a power supply circuit that includes a charge pump, a reference source generation circuit, and a low-dropout (LDO) regulator. The charge pump includes at least two on-chip capacitors, is coupled to the reference source generation circuit, and is configured to provide a negative voltage level for the reference source generation circuit based on an external positive voltage power supply. The reference source generation circuit is coupled to the LDO regulator. The reference source generation circuit is configured to provide a reference voltage for the LDO regulator based on the negative voltage level. The LDO regulator is coupled to a load circuit, and the LDO regulator is configured to output a power supply voltage to the load circuit based on the reference voltage and an external negative voltage power supply.

Abstract: An example cutting apparatus includes a scalpel and a housing defining a scalpel guide. A handle is coupled to a proximal end of the scalpel. A blade holder at a distal end of the scalpel. The scalpel has a length longer than a length of the housing. The scalpel guide constrains the movement path of the scalpel.

Abstract: Wireless sensing using measurement enhancement is described. In one example, a described method comprises: receiving a wireless signal transmitted by a transmitter through a wireless multipath channel of a venue, wherein the received wireless signal differs from the transmitted wireless signal due to the wireless multipath channel and a motion of an object in the venue; obtaining a time series of channel information (TSCI) of the wireless multipath channel based on the received wireless signal, wherein each channel information (CI) comprises N1 CI components (CIC); for each respective CI having N1 CIC of the TSCI, computing a respective enhanced CI (ECI) having N2 CIC; computing a motion information (MI) based on the ECI of the TSCI; and performing a sensing task based on the MI.

Abstract: High resolution human imaging using neural network is described. In one example, a described method comprises: assembling a k1-dimensional (k1-D) imaging matrix by a processor based on arranging and concatenating a plurality of k2-dimensional (k2-D) input imaging matrices; encoding the k1-D imaging matrix by an encoder, which is a k1-D encoding neural network, to generate a (k1+k3)-D first intermediate matrix; generating a (k2+k3)-D second intermediate matrix based on the (k1+k3)-D first intermediate matrix; and decoding the (k2+k3)-D second intermediate matrix by a decoder, which is a k2-D decoding neural network, to generate a k2-D output imaging matrix. There is at least one skip connection between the encoder and the decoder. An imaging resolution of the k2-D output imaging matrix is greater than the imaging resolution of any one of the plurality of k2-D input imaging matrices.

Abstract: A display driver circuit, an integrated circuit, an OLED screen, a device, and a method are disclosed, to improve stability of a drive current of a pixel circuit of the OLED screen. The display driver circuit is configured to provide a data signal in a data refresh frame of the OLED screen, and provide a keep voltage in a keep frame. The display driver circuit includes a plurality of data channels, and the display OLED screen includes a plurality of pixel circuits. The plurality of data channels provide data signals for the plurality of pixel circuits in a one-to-one correspondence manner. The display driver circuit further includes a voltage keep channel, and the voltage keep channel provides keep voltages for the plurality of pixel circuits.

Abstract: The present invention provides a storage device suitable for high temperature. A plurality of memory devices are disposed on the top of a substrate, respectively, and connected electrically to a control device and a temperature sensor. The temperature sensor includes a first predetermined temperature, a second predetermined temperature, and a third predetermined temperature. The temperature sensor is used for sensing the temperature of the plurality of memory devices and generating a temperature value. The control device adjusts the transmission rate of the storage signal to make the storage device adapt to high temperature environments.

Abstract: A system includes a cooler, a concentration meter, a first pump and a second pump. The cooler is configured to cool first liquid by second liquid in the cooler. The concentration meter is configured to measure a concentration of the first liquid. The first pump is configured to move the first liquid according to the concentration. The second pump is coupled to the cooler, disposed with the first pump in a parallel manner, and configured to move the second liquid.