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公开(公告)号：US11462043B2
公开(公告)日：2022-10-04
申请号：US17211865
申请日：2021-03-25
Applicant: NOVATEK MICROELECTRONICS CORP.
Inventor： Jung-Chen Chung
Abstract: Various aspects or embodiments of fingerprint sensing are described, for use in fingerprint sensing, for example, over a portion or whole of a screen of a computing device, such as smart phones, tablet computers or other information processing devices. An electronic module, computing apparatus, and a panel are provided. The electronic module includes a slew rate configuring circuit to generate and transmit at least one output signal to a gate on array (GOA) circuit of the panel; and a fingerprint sensing control circuit, coupled to fingerprint sensing elements of the panel, to generate and transmit control signals to the GOA circuit, wherein the fingerprint sensing control circuit controls the GOA circuit to generate reset signals according to the at least one output signal to reset the fingerprint sensing elements respectively and the slew rate configuring circuit controls a slew rate of a falling edge of each reset signal.
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公开(公告)号：US11386689B2
公开(公告)日：2022-07-12
申请号：US17123150
申请日：2020-12-16
Applicant: NOVATEK MICROELECTRONICS CORP.
Inventor： Jung-Chen Chung , Chi-Ting Chen
Abstract: A method for fingerprint sensing of an electronic module capable of fingerprint sensing, the electronic module for being coupled to a plurality of fingerprint sensing pixels, the electronic module including an analog front-end stage for being coupled to the fingerprint sensing pixels, the method comprising the following steps. A first scanning operation is performed on at least a first portion of the fingerprint sensing pixels by using a first reference signal being applied to a reference terminal of the analog front-end stage to obtain a level of a second reference signal which is based on a sensing result of the first scanning operation and is different from the first reference signal. A second scanning operation is performed on at least a second portion of the fingerprint sensing pixels by using the second reference signal being applied to the reference terminal of the analog front-end stage.
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13.发明授权公开(公告)号：US11062110B2
公开(公告)日：2021-07-13
申请号：US16713013
申请日：2019-12-13
Applicant: NOVATEK Microelectronics Corp.
Inventor： Jung-Chen Chung , Chi-Ting Chen
IPC: G06K9/00
Abstract: A fingerprint detection device comprises a plurality of fingerprint sensing circuits and a processor. The plurality of fingerprint sensing circuits is corresponding to a plurality of sensing zones respectively. The processor is electrically coupled to the fingerprint sensing circuits through a shared transmission bus. The processor is configured to receive information of a touched area of each of the sensing zones, determine a transmission sequence according to the touched area of each of the sensing zones, and control the fingerprint sensing circuits to transmit sensing information of the corresponding sensing zones to the processor through the shared transmission bus according to the transmission sequence.
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公开(公告)号：US10679032B2
公开(公告)日：2020-06-09
申请号：US16105977
申请日：2018-08-21
Applicant: NOVATEK Microelectronics Corp.
Inventor： Jung-Chen Chung , Chi-Ting Chen
IPC: G06K9/00
Abstract: A fingerprint sensing method and a fingerprint sensing device are provided. The fingerprint sensing method includes the following steps. A first supply voltage is provided to power a fingerprint sensing circuit of the fingerprint sensing circuit. When the fingerprint sensing circuit is powered by the first supply voltage, it is detected whether a finger touch occurs. In response to determining that the finger touch has occurred, a second supply voltage is provided to power the fingerprint sensing device. A fingerprint image sensing is performed to obtain a fingerprint image when the fingerprint sensing circuit is powered by the second supply voltage.
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公开(公告)号：US11830280B1
公开(公告)日：2023-11-28
申请号：US17869773
申请日：2022-07-20
Applicant: NOVATEK Microelectronics Corp.
Inventor： Jung-Chen Chung , Chi-Ting Chen , Jung-Yu Tsai
CPC classification number: G06V40/1318 , G06F3/0418 , G06F3/04166
Abstract: An image processing circuit for controlling a panel is configured to: receive information of a fixed pattern noise (FPN) corresponding to a first sensing zone of the panel, wherein the first sensing zone is determined according to a touch position of a finger; scan the first sensing zone to perform fingerprint sensing on the finger, to receive a plurality of raw sensing signals; remove the FPN from the plurality of raw sensing signals to generate a plurality of modified sensing signals; and output a plurality of fingerprint data to a host for fingerprint recognition, wherein the plurality of fingerprint data are converted from the plurality of modified sensing signals.
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Patent Agency Ranking
公开(公告)号：US11749014B2
公开(公告)日：2023-09-05
申请号：US17394329
申请日：2021-08-04
Applicant: Novatek Microelectronics Corp.
Inventor： Jung-Chen Chung , Chi-Ting Chen
CPC classification number: G06V40/1318 , G06F3/0412 , G06F3/0421
Abstract: An optical fingerprint sensing apparatus, a driver apparatus, and an operation method are provided. The driver apparatus includes a display driving device and a fingerprint sensing driving device. The display driving device drives the display panel to display different frames with different luminances, and the different frames are used to generate at least one of different transmitted light intensities and different reflected light intensities. The fingerprint sensing driving device drives the display panel to perform a fingerprint capturing operation to capture a plurality of different fingerprint images of a finger under the at least one of the different transmitted light intensities and the different reflected light intensities. The different fingerprint images are processed to generate a processed fingerprint image.
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公开(公告)号：US11301708B2
公开(公告)日：2022-04-12
申请号：US17015085
申请日：2020-09-09
Applicant: NOVATEK Microelectronics Corp.
Inventor： Jung-Chen Chung , Jen-Yi Lin , Min Huang
Abstract: An image sensing circuit includes a plurality of readout circuits and a pre-charge control circuit. Each of the readout circuits is coupled to a sensing line among a plurality of sensing lines and configured to receive a sensing voltage among a plurality of sensing voltages through the corresponding sensing line, wherein at least one of the readout circuits is further configured to receive at least one first pre-scan voltage through the corresponding sensing line prior to reception of the sensing voltage. The pre-charge control circuit, coupled to the readout circuits, is configured to perform a plurality of steps. The steps include receiving the at least one first pre-scan voltage from the at least one readout circuit; calculating a first pre-charge voltage according to the at least one first pre-scan voltage; and pre-charging the sensing lines to the first pre-charge voltage before the readout circuits receive the sensing voltages.
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公开(公告)号：US11301665B2
公开(公告)日：2022-04-12
申请号：US16531126
申请日：2019-08-05
Applicant: Novatek Microelectronics Corp.
Inventor： Jung-Chen Chung , Chi-Ting Chen
Abstract: A fingerprint and proximity sensing apparatus for fingerprint recognizing and proximity sensing is provided. The fingerprint and proximity sensing apparatus includes a display panel, a fingerprint sensor, and at least one proximity sensing light emitting diode. The fingerprint sensor has an optical sensing array. The optical sensing array is configured to receive a first light emitted from the display panel and a second light emitted from the at least one proximity sensing light emitting diode at different time periods. The first light and the second light have different ranges of wave length. A sensing process is also provided.
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公开(公告)号：US11010581B2
公开(公告)日：2021-05-18
申请号：US16431720
申请日：2019-06-04
Applicant: NOVATEK Microelectronics Corp.
Inventor： Jung-Chen Chung
IPC: G06K9/00
Abstract: A fingerprint sensing apparatus having a three-dimensional (3-D) sensing mechanism that includes optical fingerprint sensing circuits and a processing circuit is provided. The optical fingerprint sensing circuits are configured to perform sensing within sensing areas to obtain sensed images, wherein each of the sensing areas corresponds to one of the optical fingerprint sensing circuits and the sensing areas includes at least one overlapped area. The processing circuit is electrically coupled to the optical fingerprint sensing circuits to receive the sensed images and generate a three-dimensional sensed image having depth information of the overlapped area according to a disparity between the sensed images.
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公开(公告)号：US10970512B2
公开(公告)日：2021-04-06
申请号：US16424506
申请日：2019-05-29
Applicant: NOVATEK Microelectronics Corp.
Inventor： Jung-Chen Chung , Chi-Ting Chen
Abstract: A fingerprint sensing apparatus having a large-area sensing mechanism is provided that includes at least three optical fingerprint sensing circuits and a processing circuit. The at least three optical fingerprint sensing circuits are configured to perform sensing within a plurality of sensing areas to obtain a plurality of sensed images, wherein each of the sensing areas corresponds to one of the optical fingerprint sensing circuits. The processing circuit is electrically coupled to the optical fingerprint sensing circuits to receive the sensed images and is configured to splice the sensed images together to form an integrated sensed image.
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