Abstract: A time-of-flight ranging device and a time-of-flight ranging method are provided. The time-of-flight ranging device includes a light source, a sensing array, and a time-to-digital converter. The light source sequentially emits a plurality of laser pulse signals towards a sensing target. The sensing array senses rays of reflected pulse light generated when the sensing target reflects the laser pulse signals. The time-to-digital converter performs integration operations on a plurality of sensing results of a plurality of sensing units during a plurality of consecutive ranging periods to generate a plurality of pieces of first histogram data. The control circuit performs a mathematical operation on the pieces of first histogram data to generate second histogram data. The ranging periods have delay periods among one another, such that a plurality of periods of start time of the pieces of first histogram data are sequentially delayed by a plurality of time lengths.

Abstract: A time-of-flight ranging device and a time-of-flight ranging method are provided. The time-of-flight ranging device includes a light source, a sensing array, and a time-to-digital converter. The light source emits a laser pulse signal towards a sensing target. The sensing array includes a plurality of sensing units. The sensing array is configured to sense reflected pulse light generated when the sensing target reflects the laser pulse signal. The time-to-digital converter is coupled to the sensing array. The time-to-digital converter performs an integration operation on a plurality of sensing results of the sensing units during a plurality of consecutive integration periods to generate histogram data. At least part of the integration periods have different time lengths, such that at least part of a plurality of bins in the histogram data have different bin widths.

Abstract: An electronic apparatus and an operating method thereof are provided. The electronic apparatus includes an optical fingerprint sensor and a processor. The optical fingerprint sensor is configured to obtain a fingerprint image. The processor is coupled to the optical fingerprint sensor and analyzes the fingerprint image to calculate at least one of a color pixel ratio and a light reflectance corresponding to the fingerprint image. The processor searches a background database according to at least one of the color pixel ratio and the light reflectance to obtain a background image. The processor corrects the fingerprint image according to the background image to obtain a corrected fingerprint image.

Abstract: A fingerprint sensing device and an operation method thereof are provided. The fingerprint sensing device includes a fingerprint sensor, a driver integrated chip, and a fingerprint sensing chip. The fingerprint sensing chip is coupled to the fingerprint sensor, and is coupled to the driver integrated chip via a general purpose input/output (GPIO) interface. The fingerprint sensing chip provides a control signal to the driver integrated chip via the GPIO interface to control the driver integrated chip according to the control signal to disable touch sensing during a fingerprint sensing period. The fingerprint sensing chip drives the fingerprint sensor to obtain a fingerprint image during the fingerprint sensing period.

Abstract: An electronic apparatus having a fingerprint sensing function, including a touch panel, a driving circuit, a fingerprint sensing array, and a fingerprint sensing circuit, is provided. The driving circuit provides a driving signal to the touch panel. The fingerprint sensing array includes multiple sensing units arranged in an array. The fingerprint sensing circuit is coupled to the sensing units on the fingerprint sensing array via multiple sensing data lines, and applies multiple control signals to the sensing units via the sensing data lines. A working frequency of the driving signal is the same as a working frequency of the control signals, and the driving signal is synchronized with the control signals.

Abstract: A driving apparatus for a display panel is provided. The driving apparatus for the display panel is configured on a film by means of a Chip-on-Film (COF) package. A selection circuit receives multiple driving voltages. A control circuit is coupled to the selection circuit and controls the selection circuit to output one of the multiple driving voltages, so as to drive the display panel.

Abstract: A fingerprint sensing module including an image sensor, a microlens array and a light-shielding layer is provided. The image sensor has multiple pixels. Each of the pixels has multiple light-sensing regions physically separated. Each of the light-sensing regions is adapted to receive an image beam coming from a fingerprint of user. The microlens array is disposed above the image sensor. The microlens array includes multiple microlens. A focus region of each of the microlens covers a portion of the light-sensing regions. The light-shielding layer is disposed between the image sensor and the microlens array. The light-shielding layer has multiple openings, and the positions of the openings are corresponded to the positions of the pixels.

Abstract: An electronic device and a fingerprint image correction method are provided. The electronic device includes an optical fingerprint sensor and a processor. The optical fingerprint sensor is used to obtain a fingerprint image. The processor is coupled to the optical fingerprint sensor. The processor judges multiple analog-to-digital converter values of multiple pixels of the fingerprint image according to a numerical mask to generate a comparison image. The processor compares the comparison image with a sample image to obtain a pressure level classification corresponding to the fingerprint image.

Abstract: A capacitive fingerprint sensing device is provided. A sensing pixel unit includes a capacitor, a reset circuit, and a sensing capacitor. The reset circuit provides a reset voltage during a reset period to reset a voltage on the capacitor and provides an adjustment current during a sensing period to adjust a sense voltage generated on a common junction of the capacitor and the reset circuit.

Abstract: A touch display device with a fingerprint anti-spoofing function and an associated fingerprint anti-spoofing method are provided, where the touch display device may include a touch display panel and a processing circuit. The touch display panel may include a plurality of display units and one or more codebooks, where each of the display units includes a sensor unit, and the one or more codebooks may make the sensor units receive sensing information of an object which is put on the touch display panel. In addition, the processing circuit may obtain the sensing information from the sensor units, and determine whether the object is a real finger based on the sensing information and reference information.

Abstract: An electronic device with fingerprint sensing function and a fingerprint comparison method are provided. The electronic device includes a fingerprint sensor and a processor. The fingerprint sensor is configured to obtain a first fingerprint image. The processor is coupled to the fingerprint sensor and configured to execute a fingerprint comparison operation to compare the first fingerprint image with a first registered image. When comparison between the first fingerprint image and the first registered image fails, the processor adjusts an image resolution of one of the first fingerprint image and the first registered image, and re-executes the fingerprint comparison operation to determine whether a current fingerprint sensing passes fingerprint verification.

Abstract: An electronic device, having fingerprint sensing function, is provided. The electronic device includes a display panel and a sensing module. The display panel has a surface configured to be pressed by a finger of a user. The sensing module is disposed under the display panel. The display panel displays a bright area in a fingerprint sensing area to emit an illumination beam to the finger. The sensing module obtains a base fingerprint image correspondingly. The display panel then displays the base fingerprint image in the fingerprint sensing area, so as to use the base fingerprint image as a light pattern to illuminate the finger. The sensing module obtains a second fingerprint image correspondingly. A fingerprint sensing method is also provided.

Abstract: A fingerprint sensing device and an operation method thereof are provided. The fingerprint sensing device includes a fingerprint sensor, a driver integrated chip, and a fingerprint sensing chip. The fingerprint sensing chip is coupled to the fingerprint sensor, and is coupled to the driver integrated chip via a general purpose input/output (GPIO) interface. The fingerprint sensing chip provides a control signal to the driver integrated chip via the GPIO interface to control the driver integrated chip according to the control signal to disable touch sensing during a fingerprint sensing period. The fingerprint sensing chip drives the fingerprint sensor to obtain a fingerprint image during the fingerprint sensing period.

Abstract: An image sensing apparatus and an exposure time adjustment method thereof are provided. A light sensing unit receives a light signal including image information and generates a sensing signal. An exposure time adjustment circuit is integrated in a chip and adjusts an exposure time of the light sensing unit according to the sensing signal.

Abstract: A fingerprint sensing apparatus is provided. A driving circuit drives a capacitive micromachined ultrasonic transducer (CMUT) array to emit a planar ultrasonic wave to a finger during a transmission period to generate reflected ultrasonic signals. CMUTs receive the reflected ultrasonic signals during a receiving period to generate sensing current signals. A sensing circuit senses the sensing current signals output by the CMUTs to generate fingerprint sensing signals.

Abstract: An optical fingerprint sensing apparatus is provided. A control circuit controls a first selection circuit to output at least one of fingerprint sensing signals on sensing signal lines, and controls a second selection circuit to output at least one of background noise signals on dummy sensing signal lines, so that the first selection circuit and the second selection circuit simultaneously output the fingerprint sensing signal and the background noise signal, respectively. The signal processing circuit cancels background noise of the fingerprint sensing signals according to the background noise signal.

Abstract: An electronic device, having fingerprint sensing function, is provided. The electronic device includes a display panel and a sensing module. The display panel has a surface configured to be pressed by a finger of a user. The sensing module is disposed under the display panel. The display panel displays a bright area in a fingerprint sensing area to emit an illumination beam to the finger. The sensing module obtains a base fingerprint image correspondingly. The display panel then displays the base fingerprint image in the fingerprint sensing area, so as to use the base fingerprint image as a light pattern to illuminate the finger. The sensing module obtains a second fingerprint image correspondingly. A fingerprint sensing method is also provided.

Abstract: A calibration circuit configured to calibrate a signal of a sensing unit comprises: an amplifier, a first impedance element and a second impedance element. The amplifier has a first input terminal, a second input terminal and an output terminal. The first input terminal is coupled to a first terminal of the sensing unit, the second input terminal is coupled to a reference voltage, and the output terminal is feedback to the first input terminal and outputs the readout signal. A first terminal of the first impedance element is coupled to the first input terminal of the amplifier, and a second terminal of the first impedance element is coupled to a calibration voltage. A first terminal of the second impedance element is coupled to the first terminal of the first impedance element, and a second terminal of the second impedance element is coupled to the output terminal of the amplifier.

Abstract: An electronic device is provided. A touch display panel includes a pixel array and a plurality of fingerprint sensing pixels. The fingerprint sensing pixels are embedded in the pixel array and located in a non-luminous area outside positions of the sub-display pixels. A display driving circuit is coupled to a plurality of display data lines through a first pin to drive the sub-display pixels to display an image frame. A fingerprint sensing circuit is coupled to a sensing data line through a second pin, and receives fingerprint sensing signals of the fingerprint sensing pixels.

Abstract: A fingerprint sensing device and an operation method thereof are provided. The fingerprint sensing device includes a driver integrated chip and a fingerprint sensor. The driver integrated chip is coupled to a host processor. The fingerprint sensor is coupled to the driver integrated chip and the host processor. The fingerprint sensor obtains a fingerprint image during a period when the host processor is in the sleep mode. The driver integrated chip performs a fingerprint verification on the fingerprint image, and the driver integrated chip determines to wake up the host processor according to whether the fingerprint image passes the fingerprint verification.