公开(公告)号：US11457163B1

公开(公告)日：2022-09-27

申请号：US17377413

申请日：2021-07-16

Applicant: PixArt Imaging Inc.

Inventor： Kuan Tang ,  Jui-Te Chiu

IPC: H04N5/355 ,  H04N5/378 ,  H04N5/369 ,  H04N5/353

Abstract: An image sensor device is provided to effectively improve the signal discrimination of sensed/sampled pixel values/signals in the image sensor device operating in a dark condition as well as effectively avoiding signal saturation when such image sensor device operates in a light/bright condition. Such image sensor device, when operating in dark/light conditions, can perform the exposure operation to get/sample accurate pixel image signal and pixel reset signal for only one time without estimating the pixel image signal and pixel reset signal by performing the exposure operation twice.

公开(公告)号：US20220070395A1

公开(公告)日：2022-03-03

申请号：US17183366

申请日：2021-02-24

Applicant: PixArt Imaging Inc.

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

IPC: H04N5/355 ,  H04N5/353 ,  H01L27/146

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：US11018170B2

公开(公告)日：2021-05-25

申请号：US16455964

申请日：2019-06-28

Applicant: PIXART IMAGING INC.

Inventor： Kuan Tang ,  Jui-Te Chiu ,  Yi-Cheng Chiu ,  Chia-Chi Kuo ,  Kai-Chieh Chuang

IPC: H01L27/146

Abstract: An image sensor includes a pair of pixel sharing circuits, a second reset transistor, an amplifier transistor, a readout transistor and a control circuit. The pair of pixel sharing circuits connected to a floating diffusion node, each including a photon device, a first reset transistor, a capture transistor, a holding transistor, a capacitor and a sharing transistor. The control circuit is configured to control the first reset transistor, the first capture transistor, the first holding transistor and the sharing transistor of each of the pair of sharing pixel circuits to be turned on or off.

公开(公告)号：US10067579B2

公开(公告)日：2018-09-04

申请号：US14877942

申请日：2015-10-08

Applicant: PixArt Imaging Inc.

Inventor： Cheng-Seng Hsu ,  Jui-Te Chiu ,  Chung-Ting Yang

IPC: G06F3/033 ,  G06F3/038 ,  G06F3/03 ,  G06F3/0354

Abstract: An amending circuit includes a comparing unit, a predetermined voltage generating unit, a roller switch, alight emitting unit switch and a controlling unit. A pin of the mouse and the predetermined voltage generating unit are respectively connected to two input terminals of the comparing unit. The controlling unit is coupled to the light emitting unit switch and the roller switch. The controlling unit switches to a motion detecting mode to drive a current of the current source to flow toward a second pin via the first pin and a light emitting unit of the mouse. The controlling unit further switches to a roller detecting mode to set a pressure of the first pin lower than a predetermined voltage of the predetermined voltage generating unit while the roller is grounded or to set the first pin higher than the predetermined voltage while the roller is not grounded.

公开(公告)号：US20170019073A1

公开(公告)日：2017-01-19

申请号：US14931836

申请日：2015-11-03

Applicant: PixArt Imaging Inc.

Inventor： Hsiang-Wei Hwang ,  Jui-Te Chiu

IPC: 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.

Abstract translation: 具有噪声抑制功能的信号放大电路包括第一电路模块和第二电路模块。 第一电路模块包括电流源和开关。 电流源连接到用于输入电流的输入级。 开关连接到第一输出端子，并且适于根据斩波频率切换输入级和第一输出端。 第二电路模块包括设置在输出级与连接到第一输出端的第二输入端之间的等效电容。 信号放大电路控制电流源的电流体积和等效电容的容量值，从而相应地调整信号放大电路的内部频率带宽，并且内部频率带宽小于斩波频率，并且大于输入信号 输入阶段

公开(公告)号：US20160124525A1

公开(公告)日：2016-05-05

申请号：US14877942

申请日：2015-10-08

Applicant: PixArt Imaging Inc.

Inventor： Cheng-Seng Hsu ,  Jui-Te Chiu ,  Chung-Ting Yang

IPC: G06F3/038 ,  G06F3/0354

CPC classification number: G06F3/0383 ,  G06F3/0317 ,  G06F3/03543

Abstract: An amending circuit includes a comparing unit, a predetermined voltage generating unit, a roller switch, alight emitting unit switch and a controlling unit. A pin of the mouse and the predetermined voltage generating unit are respectively connected to two input terminals of the comparing unit. The controlling unit is coupled to the light emitting unit switch and the roller switch. The controlling unit switches to a motion detecting mode to drive a current of the current source to flow toward a second pin via the first pin and a light emitting unit of the mouse. The controlling unit further switches to a roller detecting mode to set a pressure of the first pin lower than a predetermined voltage of the predetermined voltage generating unit while the roller is grounded or to set the first pin higher than the predetermined voltage while the roller is not grounded.

Abstract translation: 修正电路包括比较单元，预定电压产生单元，滚轮开关，发光单元开关和控制单元。 鼠标的引脚和预定电压产生单元分别连接到比较单元的两个输入端子。 控制单元耦合到发光单元开关和滚轮开关。 控制单元切换到运动检测模式以驱动电流源的电流经由第一引脚和鼠标的发光单元朝向第二引脚流动。 控制单元进一步切换到辊检测模式，以在辊接地时使第一销的压力低于预定电压产生单元的预定电压，或者在辊不是时将第一销设置为高于预定电压 接地