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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
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.
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公开(公告)号：US20190394415A1
公开(公告)日：2019-12-26
申请号：US16018015
申请日：2018-06-25
Applicant: PrimeSensor Technology Inc.
Inventor： Shiue-Shin Liu
Abstract: The present invention discloses an image sensor circuit and a ramp signal generator thereof. The image sensor circuit includes: an active pixel sensor (APS) array which includes plural pixel circuits arranged in an array of columns and rows; plural slope analog-to-digital converter (ADC), wherein each of the slope ADC is coupled to the corresponding column, and generates a digital sampling signal according to a ramp signal together with a pixel signal including a reset signal and a image signal which are generated by the pixel circuit located in the selected row and in the column corresponding to the slope ADC; and the ramp signal generator, which generates the ramp signal, wherein the ramp signal generator includes an active integrator, and the active integrator generates the ramp signal by charging an integration capacitor with a gain current.
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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
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.
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Patent Agency Ranking
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
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.
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公开(公告)号：US10721427B2
公开(公告)日：2020-07-21
申请号：US16018015
申请日：2018-06-25
Applicant: PrimeSensor Technology Inc.
Inventor： Shiue-Shin Liu
Abstract: The present invention discloses an image sensor circuit and a ramp signal generator thereof. The image sensor circuit includes: an active pixel sensor (APS) array which includes plural pixel circuits arranged in an array of columns and rows; plural slope analog-to-digital converter (ADC), wherein each of the slope ADC is coupled to the corresponding column, and generates a digital sampling signal according to a ramp signal together with a pixel signal including a reset signal and a image signal which are generated by the pixel circuit located in the selected row and in the column corresponding to the slope ADC; and the ramp signal generator, which generates the ramp signal, wherein the ramp signal generator includes an active integrator, and the active integrator generates the ramp signal by charging an integration capacitor with a gain current.
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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
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.
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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
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.
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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.
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