Abstract: Devices and techniques for managing power consumption of a position tracking device. The position tracking device may be a virtual reality (VR) controller having multiple optical sensors oriented to receive optical signals from different directions. A stationary optical emitter projects a laser line into a space and repeatedly scans the laser line through the space. For a given scan, some of the sensors may detect the laser line and some of the sensors may not detect the laser line. When an individual sensor fails to detect a laser scan, that sensor is disabled for at least a portion of one or more subsequent laser scans in order to reduce power consumption of the VR controller.

Abstract: Image processing method, electronic device, and storage medium are provided. The method includes acquiring an image through an image acquisition component. The image acquisition component and a display screen are arranged one over another. The image acquisition component includes an acquisition area, and the acquisition area corresponds to an input area on a display area of the display screen. Based on a synchronization signal that is at least synchronized with a signal of brightness decrease of the input area on the display area of the display screen, image acquisition of the image acquisition component is suspended.

Abstract: Embodiments are directed to a display device having a display panel, a driving circuit, a sensing circuit, and a compensation circuit. The driving circuit provides a preset sensing voltage to a pixel of the display panel. The sensing circuit senses a pixel current generated by the pixel. The sensing circuit includes a sensing circuit that generates an integrated voltage signal indicative of the pixel current, and an offset circuit for adding an offset to the integrated voltage signal. The offset is based on a previously stored compensation amount for the pixel. The compensation circuit determines a new compensation amount for the pixel based on the offset integrated voltage. Additionally, the compensation circuit compensates a display voltage of the pixel by the new compensation amount in a subsequent display frame of the display device.

Abstract: A method for driving an active matrix organic light-emitting diode (AMOLED) display. The method may be used to digitally drive the AMOLED display in a way that limits the susceptibility of the AMOLED display to certain problems arising out of digital driving techniques, such as image sticking or low display lifetimes. The method involves generating compensation factors corresponding to each pixel of the display and using those compensation factors to control the illumination of the display. The aspects of the method that incorporate the operation point for generating a compensation factor may also be applied to analog driving of AMOLED displays.

Abstract: A three-dimensional finger vein recognition method and system, comprising the following steps: three cameras taking finger vein images from three angles to obtain three images; constructing a three-dimensional finger model according to finger contour lines; mapping two-dimensional image textures photographed by the three cameras into the three-dimensional finger model, respectively performing different processes on an overlapping region and a non-overlapping region; obtaining a three-dimensional finger vein image; and finally, performing feature extraction and matching on the three-dimensional finger vein image, to complete recognition. The method can acquire a better finger vein recognition effect, and has a higher robustness for a plurality of postures, such as finger rotation and inclination.

Abstract: The described techniques support a sensing scheme for electromagnetic excitation in ultrasonic imaging sensors. A biological tissue may be sensed and imaged using an electromagnetic excitation process to generate ultrasonic waves, such as, within the tissue. A component of a device may generate one or more pulses of electromagnetic waves, which may encounter and enter the biological tissue. In some examples, the component may be a display interface or may be different from a display interface of the device. The electromagnetic waves may excite the biological tissue and generate ultrasonic waves via expansion and contraction of the tissue upon heating. The ultrasonic waves may propagate within the biological tissue and may be sensed by an ultrasonic receiver array. The sensed ultrasonic waves may be converted to pixel image data of a biometric image and may be used for biometric authentication.

Abstract: A display panel may include a plurality of pixel groups, a first lighting test circuit for testing at least one pixel of the plurality of pixel groups, a demultiplexer for providing data signals to the plurality of pixel groups, and a second lighting test circuit for testing one or more pixels of the plurality of pixel groups. At least one of the first lighting test circuit and the demultiplexer is positioned between the plurality of pixel groups and the second lighting test circuit.

Abstract: The present invention relates to a method to segment slap images and to generate accurately labelled individual fingerprints, said method comprising the following steps: reception of inputs images from a contactless fingerprint reader under controlled lighting conditions; computation of a variance in the received images to estimate a slap area as a foreground slap mask in the input images; identification of individual fingers by finding boundary of each finger; verification of a number of fingers and of geometric constraints; calculation of pose and orientation based on shape and geometry information; identification of effective fingertip area on each detected finger according the pose, orientation, as well as geometric information; output of individual fingerprints.

Abstract: Disclosed is a light distribution controllable touch panel device including: an upper transparent substrate; a lower transparent substrate; one or more lower light distribution control electrodes on a top face of the lower transparent substrate; touch panel electrodes on an underface of the upper transparent substrate; electrophoretic elements sandwiched between the one or more lower light distribution control electrodes and the touch panel electrodes, each of the electrophoretic elements including colored electrophoretic particles and dispersion medium; and a controller. The controller is configured to: provide driving potentials to the touch panel electrodes in measuring capacitances for detecting a touch point; and provide driving potentials to the one or more lower light distribution control electrodes with reference to the driving potentials given to the touch panel electrodes to control a state of the colored electrophoretic particles in the plurality of electrophoretic elements.

Abstract: A fingerprint sensor module and a fingerprint recognition device having the fingerprint sensor module are disclosed. A fingerprint sensor module includes a base film, a thin-film transistor sensor array, and a plurality of first signal lines, an external component and a plurality of second signal lines. The base film includes a fingerprint sensing area, a wing area surrounding the fingerprint sensing area, a first signal connecting area adjacent to the fingerprint sensing area, a component mounting area adjacent to the first signal connecting area, and a second signal connecting area adjacent to the component mounting area. The TFT sensor array is formed in the fingerprint sensing area. The first signal lines are formed in the first signal connecting area. The second signal lines are formed in the second signal connecting area.

Abstract: The present invention teaches a GOA circuit driving method and a GOA circuit driving device. Through the configuration of a buffer capacitor electrically connected to the level shift IC, the level shift IC connects to the buffer capacitor and switches to the transition level during shifting the target clock signals from high to low level or from low to high level. Through the buffer capacitor, the present invention is able to keep the transition level always equal to one half of the sum of the low voltage and the high voltage, thereby maximizing reduction of power consumption and feedthrough effect of the GOA circuit.

Abstract: Provided is a display device including a display panel and an input sensing unit. The input sensing unit includes at least one insulation layer, an electrode, and an auxiliary electrode. The electrode includes sensor parts including a metal and having a mesh shape and connection parts connecting adjacent sensor parts of the sensor parts to each other. The auxiliary electrode overlaps the sensor parts, is connected to the sensor parts, and includes transparent conductive oxide.

Abstract: A head-up display device includes a casing provided inside an instrument panel. The casing includes an upper case constituting an upper part of the casing and provided with a fragile portion that is configured to be broken when an impact load is input to the casing from an upper side in a vehicle up-down direction, and a lower case constituting a lower part of the casing, provided with a light source unit configured to emit image information, and having a rigidity higher than that of the upper case.

Abstract: At least one embodiment of this disclosure provides a display apparatus for solving the problem of a low identification precision due to a relatively large distance between the finger and the fingerprint identification device. The display apparatus comprises a display panel and at least one fingerprint identification device. Each fingerprint identification device comprises a plurality of identification units arranged in an array, each identification unit being provided with a photosensitive element. The photosensitive element is used for performing photoelectric conversion of incident light. The fingerprint identification device further comprises a collimating filter layer arranged on a light entrance surface of the photosensitive element.

Abstract: A method of processing a papillary print includes a step to detect a singular zone on the image, the singular zone being characterised by a position, and an orientation representative of a value of the gradient of the intensity of the image; a step to extract control patches, each control patch having one of the singular zones detected in step a); a step to project control patches in a reference base, so as to determine the projection coordinates of each control patch on the reference base, projection of a control patch on the reference base forming a projected patch; and a step to calculate a difference in projection of control patches relative to the projected patches.

Abstract: A display device is operated by using several iterations of a scan phase followed by a global drive phase. In the scan phase, the state of each pixel in the display device is set to either “enabled” or “disabled”, during which time a global drive generator is inactive. Then, in the global drive phase, a global drive signal is sent to the display device. Only the subset of enabled pixels is affected by the global drive signal, which causes the enabled pixels to perform a transition to a desired display state. The sequence of the scan phase followed by the global drive phase is then repeated up to the number of unique transitions required to update the display device.

Abstract: A display device may include gate lines, clock lines, a gate driver, connection lines, and compensators. The gate driver may be electrically connected to the gate lines and disposed between the gate lines and the clock lines. The connection lines may be electrically connected to the clock lines and may transmit clock signals to the gate driver. The compensators may be respectively electrically connected to the connection lines. One of the clock lines may be electrically connected to one of the compensators and may be electrically connected to one of the connection lines. The one of the clock lines may be positioned between a first section of the one of the compensators and a first section of the one of the connection lines.

Abstract: A semi-reflective display and a method for fabricating and assembling a semi-reflective display are presented, where the display may be comprised of visible light rectifying antenna arrays tuned to four different colors, which when forward biased may use electric power to amplify reflected colored light, and when reversed biased may generate electric power by absorbing light. TFT-tunnel diode logic may be used to control each sub-pixel.

Abstract: The invention relates to a method of a fingerprint sensing system arranged in an electronic device of capturing fingerprint data of a user contacting a fingerprint sensor of the fingerprint sensing system, and a fingerprint sensing system performing the method.

Abstract: A liquid crystal driver (100) includes: a segment driving circuit (150) that outputs a segment driving signal (SGQ) for driving a segment electrode of a liquid crystal panel, a first segment terminal (TSD1) from which a segment driving signal (SGQ) is to be output to the segment electrode, a second segment terminal (TSD2) to which a segment monitoring signal (SMN), which is a monitoring signal from the segment electrode, is to be input, and an anomalous segment detection circuit (160) that detects anomalous driving of the segment electrode based on the segment monitoring signal (SMN).