公开(公告)号：US10984216B2

公开(公告)日：2021-04-20

申请号：US16560961

申请日：2019-09-04

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chi-Ting Chen

IPC: G06K9/00

Abstract: An optical fingerprint recognition system is disclosed. The optical fingerprint recognition system comprises a processing circuit; and an image sensor comprising a pixel array; wherein in an enrollment operation, the processing circuit is configured to set a first exposure time and control the image sensor to capture a first fingerprint image according to the first exposure time and in a matching operation, the processing circuit is configured to set a second exposure time and control the image sensor to capture a second fingerprint image for the matching operation according to the second exposure time; wherein the first exposure time is longer than the second exposure time.

公开(公告)号：US10901552B2

公开(公告)日：2021-01-26

申请号：US16243105

申请日：2019-01-09

Applicant: NOVATEK Microelectronics Corp.

Inventor： Min Huang ,  Chi-Ting Chen

IPC: G06F3/041 ,  G06K9/00 ,  G06F3/044

Abstract: A signal processing circuit for receiving a sensing signal from a sensor includes a capacitor group, an amplifier and a switch. The sensing signal consists of a common-mode part and a differential-mode part. The capacitor group, coupled to a node, includes an input capacitor for coupling the sensing signal to the node and a compensation capacitor for coupling a compensation signal to the node. The amplifier, coupled to the node, is configured to amplify the sensing signal coupled from the input capacitor. The switch is coupled between the node and the amplifier.

公开(公告)号：US10861885B1

公开(公告)日：2020-12-08

申请号：US16423150

申请日：2019-05-27

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chi-Ting Chen ,  Shao-Yang Chiang

IPC: H01L27/146 ,  H04N5/235 ,  H04N5/341 ,  H04N5/3745

Abstract: The present invention provides a method of obtaining image data for an image sensing system. The image sensing system includes a sensing area having a plurality of sensing pixels. The method includes the steps of: scanning at least two groups of sensing pixels among the plurality of sensing pixels with at least two integration times, respectively, to obtain a plurality of sensing results; obtaining a selected integration time from one of the at least two integration times according to the plurality of sensing results; and scanning the plurality of sensing pixels except for the at least two groups of sensing pixels with the selected integration time, to obtain the image data.

公开(公告)号：US10854648B2

公开(公告)日：2020-12-01

申请号：US16436905

申请日：2019-06-10

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chi-Ting Chen

IPC: H01L27/146

Abstract: An image sensor includes a sensor layer and at least one metal layer. The sensor layer includes a plurality of sensing elements arranged as a 2-dimensional array along a first direction and a second direction. Each of the at least one metal layer includes a plurality of metal wires configured to form a plurality of apertures for passing lights to the plurality of sensing elements. At least one of the plurality of metal wires forming the plurality of apertures is disposed along a third direction different from the first direction and the second direction.

公开(公告)号：US20200320185A1

公开(公告)日：2020-10-08

申请号：US16907117

申请日：2020-06-19

Applicant: NOVATEK Microelectronics Corp.

Inventor： Sheng-Ruei Hsu ,  Chi-Ting Chen

IPC: G06F21/32 ,  G06K9/00 ,  G06F3/0488

Abstract: The present invention discloses a method of finger touch authentication through a fingerprint sensor. The method includes obtaining a plurality of touch operations through the fingerprint sensor, detecting a pattern of the plurality of touch operations; comparing the pattern with a registered pattern to generate a comparison result, and authenticating the plurality of touch operations on the basis of the comparison result, wherein the pattern indicates at least one feature, and the fingerprint sensor is capable of authenticating a fingerprint of a user after or before the finger touch authentication.

公开(公告)号：US20200278246A1

公开(公告)日：2020-09-03

申请号：US16290948

申请日：2019-03-03

Applicant: NOVATEK Microelectronics Corp.

Inventor： Jung-Chen Chung ,  Chi-Ting Chen

IPC: G01J1/44 ,  H03K3/356

Abstract: A method of switching a control voltage of a photo sensor cell for a photo sensor includes when the photo sensor cell is switched from a turned-off state to an turned-on state, sequentially switching the control voltage to at least one first voltage provided by at least one first voltage supply, and switching the control voltage to a first target voltage provided by a first charging pump circuit; and when the photo sensor cell is switched from the turned-on state to the turned-off state, sequentially switching the control voltage to at least one second voltage provided by at least one second voltage supply or a ground voltage, and switching the control voltage to a second target voltage provided by a second charging pump circuit.