公开(公告)号：US11620850B1

公开(公告)日：2023-04-04

申请号：US17892106

申请日：2022-08-21

Applicant: Novatek Microelectronics Corp.

Inventor： Chun-Yen Lin ,  Chi-Ting Chen

IPC: G06V40/13 ,  G06F3/041

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.

公开(公告)号：US20190056810A1

公开(公告)日：2019-02-21

申请号：US15679166

申请日：2017-08-17

Applicant: NOVATEK Microelectronics Corp.

Inventor： Yueh-Teng Mai ,  Shao-Yang Chiang ,  Chun-Yen Lin

IPC: G06F3/0354 ,  G06K9/00

Abstract: A method of handling a plurality of sensing data includes generating a threshold code for the plurality of sensing data; comparing each of the plurality of sensing data with the threshold code to determine whether a data code of each of the plurality of sensing data is a valid data code or an invalid data code; filtering out at least one first sensing data which has the invalid data code among the plurality of sensing data; and generating a final data by averaging at least one second sensing data which has the valid data code among the plurality of sensing data.

公开(公告)号：US10467453B2

公开(公告)日：2019-11-05

申请号：US15723138

申请日：2017-10-02

Applicant: Novatek Microelectronics Corp.

Inventor： Chun-Yen Lin ,  Chia-Sheng Nien

IPC: G06K9/00 ,  G06F1/3234 ,  G06F3/041

Abstract: A fingerprint identification apparatus includes a force sensor, a fingerprint sensor, and a switching circuit coupled between the force sensor and the fingerprint sensor. The switching circuit is configured to alternately activate a low power force detection mode to detect the force touch using the force sensor and a low power fingerprint detection mode to detect the finger touch using the fingerprint sensor after a switching period. In response to determining that either the force touch or the finger touch is detected, the fingerprint identification apparatus detects the fingerprint using the fingerprint sensor in a normal fingerprint detection mode. Next, the fingerprint identification apparatus determines whether the detected fingerprint matches one of reference fingerprints, and outputs an interrupt signal indicating whether the detected fingerprint matches one of the reference fingerprints. A fingerprint identification method and a system for fingerprint identification are also introduced.

公开(公告)号：US10990782B2

公开(公告)日：2021-04-27

申请号：US16676809

申请日：2019-11-07

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Chun-Yen Lin ,  Ping Liu ,  Chi-Ting Chen

IPC: G06K9/00

Abstract: An operating method of an optical fingerprint capture apparatus includes: by the apparatus upon receipt of a scan command from a host, entering an exposure mode where an image sensor thereof is exposed to light carrying information of a fingerprint; by the apparatus upon complete exposure of the image sensor to the light, entering a sample mode where multiple pieces of pixel data that cooperatively represent an image of the fingerprint are obtained and written to a data buffer thereof; and by the apparatus at a predetermined output time point that is later than a start of the sample mode and earlier than an end of the sample mode, outputting an interrupt request to cause the host to start reading the pieces of pixel data from the data buffer.

公开(公告)号：US20190102600A1

公开(公告)日：2019-04-04

申请号：US15723138

申请日：2017-10-02

Applicant: Novatek Microelectronics Corp.

Inventor： Chun-Yen Lin ,  Chia-Sheng Nien

IPC: G06K9/00 ,  G06F3/041 ,  G06F1/32

Abstract: A fingerprint identification apparatus includes a force sensor, a fingerprint sensor, and a switching circuit coupled between the force sensor and the fingerprint sensor. The switching circuit is configured to alternately activate a low power force detection mode to detect the force touch using the force sensor and a low power fingerprint detection mode to detect the finger touch using the fingerprint sensor after a switching period. In response to determining that either the force touch or the finger touch is detected, the fingerprint identification apparatus detects the fingerprint using the fingerprint sensor in a normal fingerprint detection mode. Next, the fingerprint identification apparatus determines whether the detected fingerprint matches one of reference fingerprints, and outputs an interrupt signal indicating whether the detected fingerprint matches one of the reference fingerprints. A fingerprint identification method and a system for fingerprint identification are also introduced.