公开(公告)号：US20220021830A1

公开(公告)日：2022-01-20

申请号：US16933941

申请日：2020-07-20

Applicant: Novatek Microelectronics Corp.

Inventor： Kuo Wei Cheng ,  Jen-Yi Lin ,  Jung-Chen Chung

IPC: H04N5/369 ,  H04N5/378

Abstract: An optical sensing device, including a first power rail, a second power rail, and a plurality of optical sensing elements arranged in an array, is provided. Each optical sensing element can include a photo diode, a reset switch, and a buffer. The reset switch can have a control terminal to receive a reset signal. A first terminal of the reset switch can be coupled to the first power rail and a second terminal of the reset switch is coupled to the photo diode. A first terminal of the buffer can be coupled to the second power rail, a second terminal of the buffer can be coupled to the second terminal of the reset switch and the photo diode, and a third terminal of the buffer is configured to provide a sensing signal. The second power rail is separate or independent from the first power rail.

公开(公告)号：US12216485B2

公开(公告)日：2025-02-04

申请号：US17369974

申请日：2021-07-08

Applicant: NOVATEK Microelectronics Corp.

Inventor： Jen-Yi Lin

IPC: G05F1/56

Abstract: An output circuit includes an output driver, a voltage regulator, a control circuit and a charge pump circuit. The output driver includes a signal input terminal, a signal output terminal and a first power receiving terminal. The voltage regulator is coupled to the first power receiving terminal of the output driver. The control circuit is coupled to the signal input terminal of the output driver. The charge pump circuit is coupled to the control circuit and the first power receiving terminal of the output driver.

公开(公告)号：US20230010835A1

公开(公告)日：2023-01-12

申请号：US17369974

申请日：2021-07-08

Applicant: NOVATEK Microelectronics Corp.

Inventor： Jen-Yi Lin

IPC: G05F1/56

Abstract: An output circuit includes an output driver, a voltage regulator, a control circuit and a charge pump circuit. The output driver includes a signal input terminal, a signal output terminal and a first power receiving terminal. The voltage regulator is coupled to the first power receiving terminal of the output driver. The control circuit is coupled to the signal input terminal of the output driver. The charge pump circuit is coupled to the control circuit and the first power receiving terminal of the output driver.

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

IPC: G06K9/20 ,  G06K9/00 ,  H04N5/378

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.

公开(公告)号：US20210097318A1

公开(公告)日：2021-04-01

申请号：US17015085

申请日：2020-09-09

Applicant: NOVATEK Microelectronics Corp.

Inventor： Jung-Chen Chung ,  Jen-Yi Lin ,  Min Huang

IPC: G06K9/20 ,  H04N5/378 ,  G06K9/00

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.