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公开(公告)号：US09148594B2
公开(公告)日：2015-09-29
申请号：US13952664
申请日：2013-07-28
Applicant: NOVATEK Microelectronics Corp.
Inventor： Yi-Wen Yuen , Wei Hsu , Chao-Yu Meng
CPC classification number: H04N5/365 , H04N5/3658 , H04N9/045
Abstract: A fixed pattern noise removal method for an image sensor includes steps of calculating each compensation value corresponding to each pixel column according to a plurality of compensation pixel values of the each pixel column; and sampling a plurality of active pixel values in an active pixel area and compensating the plurality of active pixel values according to the each compensation value of the each pixel column, to generate a plurality of compensated active pixel values. A plurality of active pixels sense light to generate the plurality of active pixel values.
Abstract translation: 用于图像传感器的固定图案噪声去除方法包括以下步骤：根据每个像素列的多个补偿像素值来计算与每个像素列对应的每个补偿值; 以及对有源像素区域中的多个有源像素值进行采样，并根据每个像素列的每个补偿值补偿多个有源像素值，以产生多个补偿的有源像素值。 多个有源像素感测光以产生多个有源像素值。
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公开(公告)号：US20240087356A1
公开(公告)日：2024-03-14
申请号：US18510688
申请日：2023-11-16
Applicant: Novatek Microelectronics Corp.
Inventor： Cho-Hsuan Jhang , Chao-Yu Meng , Shih-Cheng Chen , Chih-Peng Hsia
CPC classification number: G06V40/1312 , G06V40/1306 , H04N23/57
Abstract: A display apparatus and an fingerprint sensing method thereof are provided. A display panel of the display apparatus has a pixel circuit array, an in-display touch sensor array, and an in-display fingerprint sensor array. A driving circuit drives the in-display fingerprint sensor array to read a fingerprint image. A current display frame period is divided into a plurality of unit periods, each of the unit periods includes at least one fingerprint sensing period and one or both of a display driving period and a touch sensing period. The driving circuit resets a current fingerprint sensor in the in-display fingerprint sensor array during a first fingerprint sensing period among these fingerprint sensing periods of the first display frame period. The driving circuit reads a sensing result of the current fingerprint sensor during a second fingerprint sensing period succeeding to the first fingerprint sensing period.
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公开(公告)号：US11854293B2
公开(公告)日：2023-12-26
申请号：US16796941
申请日：2020-02-21
Applicant: Novatek Microelectronics Corp.
Inventor： Cho-Hsuan Jhang , Chao-Yu Meng , Shih-Cheng Chen , Chih-Peng Hsia
CPC classification number: G06V40/1312 , G06V40/1306 , H04N23/57
Abstract: A display apparatus and an fingerprint sensing method thereof are provided. A display panel of the display apparatus has a pixel circuit array, an in-display touch sensor array, and an in-display fingerprint sensor array. A driving circuit drives the in-display fingerprint sensor array to read a fingerprint image. A current display frame period is divided into a plurality of unit periods, each of the unit periods includes at least one fingerprint sensing period and one or both of a display driving period and a touch sensing period. The driving circuit resets a current fingerprint sensor in the in-display fingerprint sensor array during a first fingerprint sensing period among these fingerprint sensing periods of the first display frame period. The driving circuit reads a sensing result of the current fingerprint sensor during a second fingerprint sensing period succeeding to the first fingerprint sensing period.
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公开(公告)号：US10700674B1
公开(公告)日：2020-06-30
申请号：US16542275
申请日：2019-08-15
Applicant: NOVATEK Microelectronics Corp.
Inventor： Pai-Hsiang Hsu , Chao-Yu Meng
Abstract: A differential comparator circuit is provided that includes a differential input pair, an active load, a pair of cross voltage generation devices and a pair of switches. The differential input pair has a pair of input terminals and a pair of first connection terminals. The active load has a pair of second connection terminals. The cross voltage generation devices are electrically coupled between the first connection terminals and the second connection terminals, wherein the cross voltage generation devices are configured to be electrically activated to establish a cross voltage therebetween in a reset phase and electrically deactivated to become a short circuit in an operation phase. The switches are configured to electrically couple the pair of input terminals respectively to the pair of first connection terminals in the reset phase and not electrically couple the pair of input terminals respectively from the pair of first connection terminals.
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Patent Agency Ranking
公开(公告)号：US09258498B2
公开(公告)日：2016-02-09
申请号：US14207659
申请日：2014-03-13
Applicant: NOVATEK Microelectronics Corp.
Inventor： Wen-Shen Wuen , Chao-Yu Meng
CPC classification number: H04N5/3575 , H04N5/3658 , H04N5/378
Abstract: An image sensor includes a pixel unit and a pixel readout circuit. The pixel unit includes an image pixel array including a plurality of image pixel columns, respectively; a first reference pixel array including a plurality of first reference pixel columns; and a bias circuit, coupled to the image pixel columns for generating a plurality of column sensing signals, coupled to the first reference pixel columns for generating a plurality of first reference signals, and further for generating a first average reference voltage signal according to the plurality of first reference signals. The pixel readout circuit generates a plurality of reset values and a plurality of sampling values according to the column sensing signals and the first average reference voltage signal, wherein the plurality of reference pixel rows is less than the plurality of image pixel rows.
Abstract translation: 图像传感器包括像素单元和像素读出电路。 像素单元包括分别包括多个图像像素列的图像像素阵列; 包括多个第一参考像素列的第一参考像素阵列; 以及耦合到所述图像像素列以产生多个列感测信号的偏置电路，耦合到所述第一参考像素列以产生多个第一参考信号，并且还用于根据所述多个第一参考像素列生成第一平均参考电压信号 的第一参考信号。 像素读出电路根据列感测信号和第一平均参考电压信号产生多个复位值和多个采样值，其中多个参考像素行小于多个图像像素行。
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公开(公告)号：US12087079B2
公开(公告)日：2024-09-10
申请号：US18510688
申请日：2023-11-16
Applicant: Novatek Microelectronics Corp.
Inventor： Cho-Hsuan Jhang , Chao-Yu Meng , Shih-Cheng Chen , Chih-Peng Hsia
CPC classification number: G06V40/1312 , G06V40/1306 , H04N23/57
Abstract: A display apparatus and an fingerprint sensing method thereof are provided. A display panel of the display apparatus has a pixel circuit array, an in-display touch sensor array, and an in-display fingerprint sensor array. A driving circuit drives the in-display fingerprint sensor array to read a fingerprint image. A current display frame period is divided into a plurality of unit periods, each of the unit periods includes at least one fingerprint sensing period and one or both of a display driving period and a touch sensing period. The driving circuit resets a current fingerprint sensor in the in-display fingerprint sensor array during a first fingerprint sensing period among these fingerprint sensing periods of the first display frame period. The driving circuit reads a sensing result of the current fingerprint sensor during a second fingerprint sensing period succeeding to the first fingerprint sensing period.
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公开(公告)号：US20200275001A1
公开(公告)日：2020-08-27
申请号：US16796941
申请日：2020-02-21
Applicant: Novatek Microelectronics Corp.
Inventor： Cho-Hsuan Jhang , Chao-Yu Meng , Shih-Cheng Chen , Chih-Peng Hsia
Abstract: A display apparatus and an fingerprint sensing method thereof are provided. A display panel of the display apparatus has a pixel circuit array, an in-display touch sensor array, and an in-display fingerprint sensor array. A driving circuit drives the in-display fingerprint sensor array to read a fingerprint image. A current display frame period is divided into a plurality of unit periods, each of the unit periods includes at least one fingerprint sensing period and one or both of a display driving period and a touch sensing period. The driving circuit resets a current fingerprint sensor in the in-display fingerprint sensor array during a first fingerprint sensing period among these fingerprint sensing periods of the first display frame period. The driving circuit reads a sensing result of the current fingerprint sensor during a second fingerprint sensing period succeeding to the first fingerprint sensing period.
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公开(公告)号：US20140340552A1
公开(公告)日：2014-11-20
申请号：US14207659
申请日：2014-03-13
Applicant: NOVATEK Microelectronics Corp.
Inventor： Wen-Shen Wuen , Chao-Yu Meng
IPC: H04N5/341
CPC classification number: H04N5/3575 , H04N5/3658 , H04N5/378
Abstract: An image sensor includes a pixel unit and a pixel readout circuit. The pixel unit includes an image pixel array including a plurality of image pixel columns, respectively; a first reference pixel array including a plurality of first reference pixel columns; and a bias circuit, coupled to the image pixel columns for generating a plurality of column sensing signals, coupled to the first reference pixel columns for generating a plurality of first reference signals, and further for generating a first average reference voltage signal according to the plurality of first reference signals. The pixel readout circuit generates a plurality of reset values and a plurality of sampling values according to the column sensing signals and the first average reference voltage signal, wherein the plurality of reference pixel rows is less than the plurality of image pixel rows.
Abstract translation: 图像传感器包括像素单元和像素读出电路。 像素单元包括分别包括多个图像像素列的图像像素阵列; 包括多个第一参考像素列的第一参考像素阵列; 以及耦合到所述图像像素列以产生多个列感测信号的偏置电路，耦合到所述第一参考像素列以产生多个第一参考信号，并且还用于根据所述多个第一参考像素列生成第一平均参考电压信号 的第一参考信号。 像素读出电路根据列感测信号和第一平均参考电压信号产生多个复位值和多个采样值，其中多个参考像素行小于多个图像像素行。
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公开(公告)号：US20140313378A1
公开(公告)日：2014-10-23
申请号：US13952664
申请日：2013-07-28
Applicant: NOVATEK Microelectronics Corp.
Inventor： Yi-Wen Yuen , Wei Hsu , Chao-Yu Meng
CPC classification number: H04N5/365 , H04N5/3658 , H04N9/045
Abstract: A fixed pattern noise removal method for an image sensor includes steps of calculating each compensation value corresponding to each pixel column according to a plurality of compensation pixel values of the each pixel column; and sampling a plurality of active pixel values in an active pixel area and compensating the plurality of active pixel values according to the each compensation value of the each pixel column, to generate a plurality of compensated active pixel values. A plurality of active pixels sense light to generate the plurality of active pixel values.
Abstract translation: 用于图像传感器的固定图案噪声去除方法包括以下步骤：根据每个像素列的多个补偿像素值来计算与每个像素列对应的每个补偿值; 以及对有源像素区域中的多个有源像素值进行采样，并根据每个像素列的每个补偿值补偿多个有源像素值，以产生多个补偿的有源像素值。 多个有源像素感测光以产生多个有源像素值。
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