公开(公告)号：US11831328B2

公开(公告)日：2023-11-28

申请号：US17666494

申请日：2022-02-07

Applicant: PixArt Imaging Inc.

Inventor： Shiue-Shin Liu

IPC: H03M1/06 ,  H03M1/80 ,  H03M1/46 ,  H03K19/20

CPC classification number: H03M1/802 ,  H03M1/462 ,  H03K19/20

Abstract: A method of an electronic device includes: providing a capacitive digital-to-analog converter having a reference voltage input; providing a reference voltage providing circuit to generate a reference voltage to the reference voltage input of the capacitive digital-to-analog converter; and, generating a compensation signal into the reference voltage input of the capacitive digital-to-analog converter in response to at least one switching of at least one capacitor in a switchable capacitor network of the capacitive digital-to-analog converter.

公开(公告)号：US11120675B2

公开(公告)日：2021-09-14

申请号：US16521535

申请日：2019-07-24

Applicant: PixArt Imaging Inc.

Inventor： Han-Chang Lin ,  Shiue-Shin Liu ,  Shuen-Yin Bai

IPC: G08B13/196 ,  G08B13/19 ,  H04N5/232 ,  G08B21/18 ,  G06K9/00 ,  G06T7/194

Abstract: A smart motion detection device includes an image sensor, an infrared sensor and a processor. The image sensor captures a monitoring image. The infrared sensor detects a thermal motion condition and provides an alarm signal accordingly. The processor executes an image recording mode of the image sensor only according to the alarm signal when an image quality of the monitoring image is unacceptable.

公开(公告)号：US20230253978A1

公开(公告)日：2023-08-10

申请号：US17666494

申请日：2022-02-07

Applicant: PixArt Imaging Inc.

Inventor： Shiue-Shin Liu

IPC: H03M1/80 ,  H03M1/46

CPC classification number: H03M1/802 ,  H03M1/462 ,  H03K19/20

Abstract: A method of an electronic device includes: providing a capacitive digital-to-analog converter having a reference voltage input; providing a reference voltage providing circuit to generate a reference voltage to the reference voltage input of the capacitive digital-to-analog converter; and, generating a compensation signal into the reference voltage input of the capacitive digital-to-analog converter in response to at least one switching of at least one capacitor in a switchable capacitor network of the capacitive digital-to-analog converter.

公开(公告)号：US11863195B2

公开(公告)日：2024-01-02

申请号：US17574583

申请日：2022-01-13

Applicant: PixArt Imaging Inc.

Inventor： Shiue-Shin Liu

IPC: H03M1/06 ,  H03M1/38 ,  H03M1/46 ,  H03M1/40

CPC classification number: H03M1/0604 ,  H03M1/38 ,  H03M1/40 ,  H03M1/46 ,  H03M1/462

Abstract: An ADC device includes a DAC circuit, a comparator circuit, a SAR decision circuit, an oscillator circuit having a delay unit, and a processing circuit. The oscillator circuit is used for generating the clock signal according to a reset signal and a delay of the delay unit. The processing circuit is used for sequentially generating multiple bit conversion signals associated with multiple different bits of the decision signal, for generating at least one guard signal which follows the multiple bit conversion signals, and then for comparing the at least one guard signal with the reset signal to adjust the delay generated by the delay unit of the oscillator circuit.

公开(公告)号：US20230223945A1

公开(公告)日：2023-07-13

申请号：US17574583

申请日：2022-01-13

Applicant: PixArt Imaging Inc.

Inventor： Shiue-Shin Liu

IPC: H03M1/06

CPC classification number: H03M1/0604

Abstract: An ADC device includes a DAC circuit, a comparator circuit, a SAR decision circuit, an oscillator circuit having a delay unit, and a processing circuit. The oscillator circuit is used for generating the clock signal according to a reset signal and a delay of the delay unit. The processing circuit is used for sequentially generating multiple bit conversion signals associated with multiple different bits of the decision signal, for generating at least one guard signal which follows the multiple bit conversion signals, and then for comparing the at least one guard signal with the reset signal to adjust the delay generated by the delay unit of the oscillator circuit.

公开(公告)号：US20210027590A1

公开(公告)日：2021-01-28

申请号：US16521535

申请日：2019-07-24

Applicant: PixArt Imaging Inc. ,  PRIMESENSOR TECHNOLOGY INC.

Inventor： Han-Chang Lin ,  Shiue-Shin Liu ,  Shuen-Yin Bai

IPC: G08B13/196 ,  G08B21/18 ,  G08B13/19 ,  G06K9/00 ,  G06T7/194 ,  H04N5/232

Abstract: A smart motion detection device includes an image sensor, an infrared sensor and a processor. The image sensor captures a monitoring image. The infrared sensor detects a thermal motion condition and provides an alarm signal accordingly. The processor executes an image recording mode of the image sensor only according to the alarm signal when an image quality of the monitoring image is unacceptable.