公开(公告)号：US10404934B2

公开(公告)日：2019-09-03

申请号：US15434035

申请日：2017-02-15

Applicant: PixArt Imaging Inc.

Inventor： Cheng-Seng Hsu ,  Jui-Te Chiu

IPC: H04N5/378

Abstract: An analog-to-digital signal processing method applied for an image sensor includes: providing a global analog-to-digital converter (ADC) capable of converting analog signals of all pixels of a pixel array into digital signals; providing a column-parallel ADC capable of respectively converting a plurality of analog signals of a plurality of pixels on different columns of the pixel array into a plurality of digital signals by using a plurality of ADC circuits; and, dynamically selecting and switching to enable one of the global ADC and column-parallel ADC to perform analog-to-digital conversion for analog data/signals of pixels on the pixel array.

公开(公告)号：US20180240837A1

公开(公告)日：2018-08-23

申请号：US15697421

申请日：2017-09-06

Applicant: PixArt Imaging Inc.

Inventor： Peng-Sheng Chen ,  Jui-Te Chiu ,  Han-Chi Liu

IPC: H01L27/146 ,  H04N3/14

CPC classification number: H01L27/14643 ,  H01L27/14612 ,  H04N3/155

Abstract: A sensing pixel array used in an image sensor includes sensing pixel units each including a photodiode, a row reset transistor, a buffer transistor, and a column control transistor at least. Photodiode converts light into a sensing signal. Row reset transistor is coupled to a reference reset signal and photodiode, and is controlled by a row reset signal. Buffer transistor is coupled to the output of photodiode to receive and buffer the sensing signal. Column control transistor is electrically connected to the control end or the output of the buffer transistor and is used as a switch which can be closed or open according to a column control signal to control whether to transfer charge of the reference reset signal to a capacitor when the row reset transistor becomes conductive.

公开(公告)号：US20160209976A1

公开(公告)日：2016-07-21

申请号：US14872046

申请日：2015-09-30

Applicant: PixArt Imaging Inc.

Inventor： Hsin-Chi Cheng ,  Yu-Chia Lin ,  Chun-Sheng Lin ,  Jui-Te Chiu

IPC: G06F3/041 ,  G06F1/16 ,  G06F3/042

CPC classification number: G06F3/0416 ,  G06F3/0421

Abstract: The present invention provides an image data sensing system comprising a controller and at least one image sensor connected in series. The controller comprises a control input port and a control output port. The controller transmits a command signal or a synchronizing signal to all image sensors via the control output port, and the image sensor transmits image data to the controller via the control input port. By this way, the number for the ports of the controller can be decreased. The present invention further provides a mechanism that the image sensor can operate at different timings if a number of the image sensor is more than one. The present invention also provides relative image sensing methods.

Abstract translation: 本发明提供一种图像数据感测系统，包括控制器和串联连接的至少一个图像传感器。 控制器包括控制输入端口和控制输出端口。 控制器通过控制输出端口向所有图像传感器发送命令信号或同步信号，图像传感器通过控制输入端口将图像数据发送到控制器。 通过这种方式，可以减少控制器端口的数量。 本发明还提供一种如果图像传感器的数量多于一个的话，图像传感器可以在不同的定时操作的机构。 本发明还提供了相对图像感测方法。

公开(公告)号：US20160120463A1

公开(公告)日：2016-05-05

申请号：US14746807

申请日：2015-06-22

Applicant: PixArt Imaging Inc.

Inventor： Peng-Sheng Chen ,  Hsiang-Wei Hwang ,  Jui-Te Chiu

IPC: A61B5/00

CPC classification number: A61B5/02438 ,  A61B5/082 ,  A61B5/681

Abstract: A vessel sensing device with automatic amendment function includes an analog processing circuit, a signal generating circuit and a DC voltage detecting circuit. The analog processing circuit includes an optical sensing module. An optical sensor of the optical sensing module generates an analog signal with a skin characteristic signal and a vessel characteristic signal according to an optical reflecting signal. The skin characteristic signal and the vessel characteristic signal respectively correspond to a skin feature and a vessel feature of the user. The signal generating circuit is coupled to the analog processing circuit to transform the analog signal into a compensation signal. The DC voltage detecting circuit is coupled to the signal generating circuit and adapted to compensate the analog processing circuit according to the compensation signal, so as to decrease the skin characteristic signal within the analog signal.

Abstract translation: 具有自动修正功能的容器感测装置包括模拟处理电路，信号发生电路和直流电压检测电路。 模拟处理电路包括光学感测模块。 光学传感模块的光学传感器根据光反射信号产生具有皮肤特征信号和容器特征信号的模拟信号。 皮肤特征信号和血管特征信号分别对应于使用者的皮肤特征和血管特征。 信号发生电路耦合到模拟处理电路，以将模拟信号转换成补偿信号。 直流电压检测电路耦合到信号发生电路，用于根据补偿信号对模拟处理电路进行补偿，以减少模拟信号内的皮肤特征信号。

公开(公告)号：US11592331B2

公开(公告)日：2023-02-28

申请号：US17474806

申请日：2021-09-14

Applicant: PixArt Imaging Inc.

Inventor： Kuan Tang ,  Yi-Cheng Chiu ,  Chia-Chi Kuo ,  Jui-Te Chiu ,  Han-Chi Liu

IPC: G01J1/46 ,  G01J1/44

Abstract: There is provided a circuit to improve the sensing efficiency of pixels that uses the induction effect of a capacitor to duplicate a voltage deviation caused by additional electrons and uses a circuit to cancel out the voltage deviation during reading pixel data thereby improving the sensing efficiency.

公开(公告)号：US20220137723A1

公开(公告)日：2022-05-05

申请号：US17577005

申请日：2022-01-16

Applicant: PixArt Imaging Inc.

Inventor： Tien-Chung Yang ,  Yi-Cheng Chiu ,  Cheng-Chih Chang ,  Jui-Te Chiu ,  Yi-Chung Chen

IPC: G06F3/0338 ,  G06F3/03 ,  G05G9/047

Abstract: A force sensor device includes a first structure component, an optical sensor, and a flexible structure component. The optical sensor is disposed on the first structure component. The flexible structure component has a convex portion, and the flexible structure component is assembled with the first structure component to form a chamber in which the optical sensor is disposed. The optical sensor senses light ray transmitted from the flexible structure component to at least one pixel unit to generate at least one differential image and then detects a user's control force applied for the flexible structure component according to the at least one differential image. Differential image is temporal differential image, generated from successive pixel values of a single pixel unit, or is spatial differential image, generated based on temporal differential images of at least two neighboring pixel units.

公开(公告)号：US11287316B2

公开(公告)日：2022-03-29

申请号：US16410214

申请日：2019-05-13

Applicant: PixArt Imaging Inc.

Inventor： Kuan Tang ,  Yi-Cheng Chiu ,  Chia-Chi Kuo ,  Jui-Te Chiu ,  Han-Chi Liu

IPC: G01J1/46 ,  G01J1/44

Abstract: There is provided a circuit to improve the sensing efficiency of pixels that uses the induction effect of a capacitor to duplicate a voltage deviation caused by additional electrons and uses a circuit to cancel out the voltage deviation during reading pixel data thereby improving the sensing efficiency.

公开(公告)号：US20220070399A1

公开(公告)日：2022-03-03

申请号：US17002755

申请日：2020-08-25

Applicant: PixArt Imaging Inc.

Inventor： Kuan Tang ,  Yi-Cheng Chiu ,  Jui-Te Chiu

IPC: H04N5/378 ,  H04N5/369 ,  H04N5/3745 ,  H04N5/355

Abstract: An image sensor apparatus includes a pixel array having pixel units each including an image sensor cell and a processing circuit. The processing circuit includes a bias transistor, second floating diffusion node, first switch unit, signal transfer capacitor, reset transfer capacitor, second switch unit, and third switch unit. Bias transistor is coupled between first and second floating diffusion nodes and has control terminal coupled to bias voltage. First switch unit is coupled between first and second floating diffusion nodes. Second switch unit is coupled between second floating diffusion node and signal transfer capacitor. Third switch unit is coupled between second floating diffusion node and reset transfer capacitor. Signal transfer capacitor is selectively coupled to second floating diffusion node. Reset transfer capacitor is selectively coupled to second floating diffusion node.

公开(公告)号：US10062724B1

公开(公告)日：2018-08-28

申请号：US15697421

申请日：2017-09-06

Applicant: PixArt Imaging Inc.

Inventor： Peng-Sheng Chen ,  Jui-Te Chiu ,  Han-Chi Liu

IPC: H01L27/146 ,  H04N3/14

Abstract: A sensing pixel array used in an image sensor includes sensing pixel units each including a photodiode, a row reset transistor, a buffer transistor, and a column control transistor at least. Photodiode converts light into a sensing signal. Row reset transistor is coupled to a reference reset signal and photodiode, and is controlled by a row reset signal. Buffer transistor is coupled to the output of photodiode to receive and buffer the sensing signal. Column control transistor is electrically connected to the control end or the output of the buffer transistor and is used as a switch which can be closed or open according to a column control signal to control whether to transfer charge of the reference reset signal to a capacitor when the row reset transistor becomes conductive.

公开(公告)号：US09608575B2

公开(公告)日：2017-03-28

申请号：US14931836

申请日：2015-11-03

Applicant: PixArt Imaging Inc.

Inventor： Hsiang-Wei Hwang ,  Jui-Te Chiu

IPC: H03F1/02 ,  H03F1/26 ,  H03F3/217

CPC classification number: H03F1/26 ,  H03F3/2171 ,  H03F3/393 ,  H03F3/45188 ,  H03F2200/351 ,  H03F2200/372

Abstract: A signal amplifying circuit with noise suppression function includes a first circuit module and a second circuit module. The first circuit module includes a current source and a switch. The current source is connected to an input stage for inputting a current. The switch is connected to a first output terminal and adapted to switch the input stage and the first output terminal according to a chopping frequency. The second circuit module includes an equivalent capacitance disposed between an output stage and a second input terminal connected to the first output terminal. The signal amplifying circuit controls current volume of the current source and capacity value of the equivalent capacitance to accordingly adjust an interior frequency bandwidth of the signal amplifying circuit, and the interior frequency bandwidth is smaller than the chopping frequency and greater than an input signal of the input stage.