Fingerprint recognition integrated circuit and fingerprint recognition device including the same

    公开(公告)号:US11244139B2

    公开(公告)日:2022-02-08

    申请号:US16534574

    申请日:2019-08-07

    Abstract: A fingerprint recognition device includes a display, a touch sensor panel (TSP) which senses a touch, and a fingerprint recognition integrated circuit (FPIC) which scans a fingerprint. The FPIC includes a pixel including a photoelectric element which receives light reflected by the fingerprint, a low noise amplifier (LNA) which outputs a signal voltage by converting an electric charge received from the photoelectric element, and an analog-to-digital converter (ADC) which converts the signal voltage into a digital signal. The ADC includes a variable reference voltage generator which provides a variable reference voltage, a comparator which adds the variable reference voltage to the signal voltage, performs correlated double sampling on the result of the addition, and outputs a comparison signal by comparing the result of the correlated double sampling with a ramp voltage, and a counter which outputs the digital signal by counting the comparison signal.

    Apparatus and method for generating depth image using transition of light source
    3.
    发明授权
    Apparatus and method for generating depth image using transition of light source 有权
    使用光源转换产生深度图像的装置和方法

    公开(公告)号:US09554120B2

    公开(公告)日:2017-01-24

    申请号:US13758162

    申请日:2013-02-04

    CPC classification number: H04N13/254 G06T7/586 H04N13/271

    Abstract: An apparatus and method for generating a depth image using transition of light sources may include a surface information determination unit to determine surface information related to a surface of an object, using a plurality of intensity images generated according to position of light sources; and an output depth image generation unit to generate an output depth image, using an original depth image and the surface information.

    Abstract translation: 使用光源的转换来生成深度图像的装置和方法可以包括:表面信息确定单元,使用根据光源的位置生成的多个强度图像来确定与物体的表面相关的表面信息; 以及输出深度图像生成单元,使用原始深度图像和表面信息来生成输出深度图像。

    Unit pixel of fingerprint sensor and fingerprint sensor including the same

    公开(公告)号:US10325138B2

    公开(公告)日:2019-06-18

    申请号:US15392242

    申请日:2016-12-28

    Abstract: A unit pixel of a fingerprint sensor is provided. The unit pixel includes a sensing electrode located to form a capacitance with an object touching a touch surface, a first switch connected between a first node and a second node to transmit at least one driving voltage input through the second node, the first node connected to the sensing electrode, the switch configured to the sensing electrode, an amplifier configured to receive a signal from the sensing electrode and amplify the signal, and a first capacitor connected between a first input terminal and an output terminal of the amplifier, the first capacitor configured to transmit the signal from the sensing electrode to the output terminal. The amplifier is configured to output a different output voltage according to the at least one driving based on an operation of the first switch.

    Blood pressure measuring apparatus and method of operating the same

    公开(公告)号:US10111596B2

    公开(公告)日:2018-10-30

    申请号:US15174346

    申请日:2016-06-06

    Abstract: A blood pressure measuring apparatus and a method of operating the same are provided. The blood pressure measuring apparatus includes: a strap; and a main body that is rotatably connected to the strap, wherein the main body includes: a first pulse wave measurer configured to measure a first pulse wave; a second pulse wave measurer that is spaced apart from the first pulse wave measurer at a regular interval and is configured to measure a second pulse wave; and a blood pressure measurer configured to analyze the first pulse wave and the second pulse wave and determine a blood pressure based on the analyzed first pulse wave and the analyzed second pulse wave.

    FINGERPRINT RECOGNITION INTEGRATED CIRCUIT AND FINGERPRINT RECOGNITION DEVICE INCLUDING THE SAME

    公开(公告)号:US20200218870A1

    公开(公告)日:2020-07-09

    申请号:US16534574

    申请日:2019-08-07

    Abstract: A fingerprint recognition device includes a display, a touch sensor panel (TSP) which senses a touch, and a fingerprint recognition integrated circuit (FPIC) which scans a fingerprint. The FPIC includes a pixel including a photoelectric element which receives light reflected by the fingerprint, a low noise amplifier (LNA) which outputs a signal voltage by converting an electric charge received from the photoelectric element, and an analog-to-digital converter (ADC) which converts the signal voltage into a digital signal. The ADC includes a variable reference voltage generator which provides a variable reference voltage, a comparator which adds the variable reference voltage to the signal voltage, performs correlated double sampling on the result of the addition, and outputs a comparison signal by comparing the result of the correlated double sampling with a ramp voltage, and a counter which outputs the digital signal by counting the comparison signal.

    Apparatus for processing ultrasonic image and method thereof

    公开(公告)号:US10080548B2

    公开(公告)日:2018-09-25

    申请号:US15801430

    申请日:2017-11-02

    Abstract: Ultrasonic imaging method includes sequentially emitting by each transducer group of respective regions, into which transducers are divided, focused ultrasonic pulses to a focal point of an object; sequentially acquiring, by each transducer group, ultrasonic echo signals from the focal point based on the emitted ultrasonic pulses; calculating a normal vector of a surface of the object using emission directions of the focused ultrasonic pulses and intensities of the ultrasonic echo signals in correspondence to the focused ultrasonic pulses emitted by three of the transducer groups; calculating an attenuation rate of the ultrasonic echo signals using the normal vector and the emission directions of the focused ultrasonic pulses emitted by the three of the transducer groups, and correcting the ultrasonic echo signals based on the attenuation rate; beamforming the ultrasonic echo signals, an attenuation of which has been corrected, into ultrasonic image signals to be output as an ultrasonic image.

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