公开(公告)号：US20230164463A1

公开(公告)日：2023-05-25

申请号：US17697898

申请日：2022-03-17

Applicant: NOVATEK Microelectronics Corp.

Inventor： Jung-Yu Tsai ,  Chen-Tsung Wu ,  Kuan-Lin Wu ,  Hung-Yu Yang

IPC: H04N5/3745 ,  H04N5/376 ,  H03M1/18

CPC classification number: H04N5/37455 ,  H04N5/3765 ,  H03M1/18

Abstract: An image compensation circuit for an image sensor includes a gain amplifier, a compensation control circuit, a memory and a digital-to-analog converter (DAC). The gain amplifier is used for receiving a plurality of image signals from the image sensor and amplifying the plurality of image signals. The compensation control circuit is used for generating a plurality of compensation values for the plurality of image signals. The memory, coupled to the compensation control circuit, is used for storing the plurality of compensation values. The DAC, coupled to the memory and the gain amplifier, is used for converting the plurality of compensation values into a plurality of compensation voltages, respectively, to compensate the plurality of image signals with the plurality of compensation voltages.

公开(公告)号：US10733468B2

公开(公告)日：2020-08-04

申请号：US15960469

申请日：2018-04-23

Applicant: NOVATEK Microelectronics Corp.

Inventor： Kuan-Lin Wu

IPC: G06K9/03 ,  G06K9/00 ,  G01L1/20

Abstract: A finger stability detecting method for a fingerprint sensing device includes triggering a pressure sensing function, receiving a pressure sensing value which is generated in response to triggering the pressure sensing function, and determining whether a finger touch is stable according to at least the pressure sensing value.

公开(公告)号：US20190325242A1

公开(公告)日：2019-10-24

申请号：US15960469

申请日：2018-04-23

Applicant: NOVATEK Microelectronics Corp.

Inventor： Kuan-Lin Wu

IPC: G06K9/03 ,  G06K9/00

Abstract: A finger stability detecting method for a fingerprint sensing device includes triggering a pressure sensing function, receiving a pressure sensing value which is generated in response to triggering the pressure sensing function, and determining whether a finger touch is stable according to at least the pressure sensing value.