Abstract: A digital-to-analog converter (DAC) includes at least one multiplexer (MUX), wherein each of the MUX includes a plurality of basic switches and an assistant switch. The plurality of basic switches are coupled between an output terminal of the MUX and a plurality of input terminals of the MUX, and controlled by a plurality of grayscale codes. The assistant switch is coupled to the output terminal of the MUX, and controlled by a control signal different from each of the plurality of grayscale codes.

Abstract: The present invention relates to a Bluetooth repeater remote control device for a vehicle remote control and a method thereof which electrically connects a remote control module of a car key fob to a Bluetooth repeater controller. The Bluetooth repeater controller receives a Bluetooth signal transmitted from a mobile device and outputs a control signal to the remote control module based on the Bluetooth signal, and therefore the remote control module controls the vehicle to perform operations such as unlocking and locking. Through this invention, users can use their mobile device to perform all available functions of the car key fob without any modification or alteration to the vehicle, eliminating the need for direct physical operation of the car key fob.

Abstract: The present invention provides a system and method for providing parking information, comprising a mobile device and an in-vehicle device capable of controlling a car to lock or unlock. After establishing a wireless connection between the mobile device and the in-vehicle device which are paired, the mobile device continuously determines whether the connection between the two devices is maintained. Upon disconnection of the wireless connection, the mobile device records coordinate information of the mobile device at the time of disconnection as a parking coordinate of the car. An application on the mobile device displays a map view in response to a user command, with a mark corresponding to the parking coordinate illustrated on the map view. Thus, the present invention allows users to query the mobile device and finding the car's parking location without installing a GPS device in the car.

Abstract: A Bluetooth car controller with a power management function is configured to execute a power management method. When the Bluetooth car controller is connected to an external device, and a battery voltage of the Bluetooth car controller is less than a first voltage threshold and greater than a second voltage threshold, the Bluetooth car controller outputs an automatic unlocking signal for unlocking a car door and outputs a low-power notification message to the external device. When the Bluetooth car controller is connected to the external device, and the battery voltage is less than the second voltage threshold, the Bluetooth car controller outputs the low-power notification message to the external device and omits generating the automatic unlocking signal. A user would see the low-power notification message on the external device and be notified to change a battery of the Bluetooth car controller before the battery is out of power.

Abstract: A sharing system of a car controller device uses a cloud server to connect a first electronic device and a second electronic device. The two electronic devices and a car key controller are connected to a Bluetooth car controller device. When a car owner initiates a sharing function through the first electronic device, the cloud server verifies the second electronic device, and when verified, the cloud server sends an authorization confirmation to the second electronic device. The trustee may use the second electronic device to send out a locking signal/unlocking signal to the Bluetooth car controller device, thus allowing the Bluetooth car controller device to lock/unlock a car through the car key controller. As the car owner initiates the sharing function through the first electronic device, the car owner digitally authorizes the trustee to control the car without having to physically hand over a car key to the trustee.

Abstract: A source driver includes a digital-to-analog converter (DAC), comprising: a m-bit sub-DAC, configured to receive a plurality of first data codes within a plurality of data codes and generate a set of first intermediate voltages according to the plurality of first data codes; and a k-bit sub-DAC, configured to receive a plurality of second data codes within the plurality of data codes and generate a set of second intermediate voltages according to the plurality of second data codes; and an operational amplifier, configured to output a data voltage according to the set of first intermediate voltages or the set of second intermediate voltages; wherein m and k are positive integers.

Abstract: A pixel reading device, which includes a first capacitor, a second capacitor, a voltage generating circuit, and an analog front-end (AFE) circuit, is provided. A first terminal of the first capacitor is coupled to a fingerprint sensing pixel to receive a sensing voltage. A first terminal of the second capacitor is coupled to a second terminal of the first capacitor. The voltage generating circuit provide a compensation voltage to a second terminal of the second capacitor. During a sensing period of the fingerprint sensing pixel, the compensation voltage is at an initial level. During a level reading period of the fingerprint sensing pixel, the compensation voltage is pulled up from the initial level to a compensation level to compensate a common mode component of the sensing voltage. An input terminal of the AFE circuit is coupled to the second terminal of the first capacitor.

Abstract: A readout integrated circuit configured to read out sensing signals from an optical sensing panel is provided. The optical sensing panel includes a sensor array for fingerprint sensing. The readout integrated circuit includes a plurality of input terminals and a first discharging circuit. The plurality of input terminals are coupled to a plurality of output terminals of the optical sensing panel. The first discharging circuit is coupled to one of the plurality of input terminals. The first discharging circuit serves to discharge an output terminal included in the plurality of output terminals of the optical sensing panel by a first current during a readout period. The readout integrated circuit reads out a voltage of the output terminal as a sensing signal. The first discharging circuit includes a first switch element controlled by a control signal and a first current source which generates the first current.

Abstract: A pixel reading device, which includes a first capacitor, a second capacitor, a voltage generating circuit, and an analog front-end (AFE) circuit, is provided. A first terminal of the first capacitor is coupled to a fingerprint sensing pixel to receive a sensing voltage. A first terminal of the second capacitor is coupled to a second terminal of the first capacitor. The voltage generating circuit provide a compensation voltage to a second terminal of the second capacitor. During a sensing period of the fingerprint sensing pixel, the compensation voltage is at an initial level. During a level reading period of the fingerprint sensing pixel, the compensation voltage is pulled up from the initial level to a compensation level to compensate a common mode component of the sensing voltage. An input terminal of the AFE circuit is coupled to the second terminal of the first capacitor.

Abstract: A gallium-nitride inverter includes a control unit; an H-bridge circuit having four gallium-nitride transistors; a direct-current input end; and an alternating-current output end. In response to an input direct current, the control unit outputs a first control signal and a second control signal alternately to put a first output terminal and a second output terminal at a high potential alternately, so as to form an alternating-current output at the alternating-current output end with enhanced energy conversion efficiency.

Abstract: An optical fingerprint sensing module includes an image sensing device, a light source and a light shielding structure. The image sensing device is configured to sense light transmitted from a fingerprint of a finger on a display panel. The image sensing device includes a light sensing plane having a first geometric center. The light source includes a light emitting plane having a second geometric center. The first geometric center is separated from the second geometric center by a distance from 2 mm to 20 mm. The light shielding structure is disposed between the image sensing device and the light source. In examples, the optical fingerprint sensing module further includes a field angle controller to constrain light pass there through with a field angle of 5-60 degrees. A display device including an optical fingerprint sensing module is disclosed herein as well.

Abstract: An image processing circuit for controlling a panel is configured to: receive information of a fixed pattern noise (FPN) corresponding to a first sensing zone of the panel, wherein the first sensing zone is determined according to a touch position of a finger; scan the first sensing zone to perform fingerprint sensing on the finger, to receive a plurality of raw sensing signals; remove the FPN from the plurality of raw sensing signals to generate a plurality of modified sensing signals; and output a plurality of fingerprint data to a host for fingerprint recognition, wherein the plurality of fingerprint data are converted from the plurality of modified sensing signals.

Abstract: Embodiments of the present disclosure provide a fingerprint identification method, apparatus, and an electronic product. The method comprises: acquiring a touch signal of a finger to be identified on a display component; determining a touch zone; determining a fingerprint identification bright zone and a fingerprint identification dark zone on the display component based on the touch zone, wherein the fingerprint identification dark zone is close to and at least partially surrounds the fingerprint identification bright zone; and performing a fingerprint identification of the finger to be identified based on a bright zone fingerprint detection signal corresponding to the fingerprint identification bright zone and a dark zone fingerprint detection signal corresponding to the fingerprint identification dark zone.

Abstract: A fingerprint sensing device that includes an analog-front-end (AFE) circuit, an analog-to-digital converter (ADC) and a correction circuit is introduced. The AFE circuit generates an image signal, and the ADC converts the image signal to an output digital code. The correction circuit receives a plurality of first output digital codes that are generated by performing a plurality of first fingerprint sensing operations in a plurality of first exposure time periods. The correction circuit is further configured to calculate a second exposure time period for a second fingerprint sensing operation according to the first output digital codes and the first exposure time periods, wherein the fingerprint sensing device performs the second fingerprint operation in the second exposure time period to generate a second output digital code.

Abstract: An optical fingerprint sensing apparatus, a driver apparatus, and an operation method are provided. The driver apparatus includes a display driving device and a fingerprint sensing driving device. The display driving device drives the display panel to display different frames with different luminances, and the different frames are used to generate at least one of different transmitted light intensities and different reflected light intensities. The fingerprint sensing driving device drives the display panel to perform a fingerprint capturing operation to capture a plurality of different fingerprint images of a finger under the at least one of the different transmitted light intensities and the different reflected light intensities. The different fingerprint images are processed to generate a processed fingerprint image.

Abstract: A fingerprint sensing device that includes an analog-front-end (AFE) circuit, an analog-to-digital converter (ADC) and a correction circuit is introduced. The AFE circuit generates an image signal, and the ADC converts the image signal to an output digital code. The correction circuit receives a plurality of first output digital codes that are generated by performing a plurality of first fingerprint sensing operations in a plurality of first exposure time periods. The correction circuit is further configured to calculate a second exposure time period for a second fingerprint sensing operation according to the first output digital codes and the first exposure time periods, wherein the fingerprint sensing device performs the second fingerprint operation in the second exposure time period to generate a second output digital code.

Abstract: A fingerprint sensing device and a driving method for a fingerprint sensing panel thereof are provided. The driving method includes: detecting whether a finger touch occurs on the fingerprint sensing panel; during a period of the finger touch, switching the brightness mode of the fingerprint sensing panel from a normal brightness mode to a high brightness mode so as to sense a fingerprint; driving the fingerprint sensing panel to sense the fingerprint before a mode switching time point at which the brightness mode of the fingerprint sensing panel is switched to the high brightness mode. The fingerprint sensing panel includes a pixel row, wherein the pixel row is subjected to a reset, an exposure period and a sampling in sequence to output a row sensing result, the reset is earlier than the mode switching time point, and the sampling is later than the mode switching time point.

Abstract: A readout integrated circuit configured to read out sensing signals from an optical sensing panel is provided. The optical sensing panel includes a sensor array for fingerprint sensing. The readout integrated circuit includes a plurality of input terminals and a first discharging circuit. The plurality of input terminals are coupled to a plurality of output terminals of the optical sensing panel. The first discharging circuit is coupled to one of the plurality of input terminals. The first discharging circuit serves to discharge an output terminal included in the plurality of output terminals of the optical sensing panel by a first current during a readout period. The readout integrated circuit reads out a voltage of the output terminal as a sensing signal. The first discharging circuit includes a first switch element controlled by a control signal and a first current source which generates the first current.

Abstract: A method of fingerprint recognition for a fingerprint sensing circuit includes steps of: performing a first fingerprint sensing process including a first exposure operation and a first readout operation under a first light spot setting; and performing a second fingerprint sensing process including a second exposure operation and a second readout operation under a second light spot setting. Wherein, a host performs a first fingerprint recognition in response to the first fingerprint sensing process; and wherein, the second light spot setting and the first fingerprint recognition are performed simultaneously.

Abstract: A readout integrated circuit configured to read out sensing signals from an optical sensing panel is provided. The optical sensing panel includes a sensor array for fingerprint sensing. The readout integrated circuit includes a plurality of input terminals, a first discharging circuit and a control circuit. The plurality of input terminals are configured to be coupled to a plurality of output terminals of the optical sensing panel. The first discharging circuit is coupled to one of the plurality of input terminals. The first discharging circuit is configured to discharge one of the plurality of output terminals of the optical sensing panel by a first current during a readout period. The readout integrated circuit reads out a voltage of the output terminal as a sensing signal. The control circuit is coupled to the first discharging circuit. The control circuit is configured to output at least one control signal to control an operating period of the first discharging circuit.