Pixart Imaging Incorporated

Pixart Imaging Incorporation

China Glaze Co., Ltd. (Taiwan)

Yi-Cheng Chiu

Jui-Te Chiu

Kuan Tang

Chia-Chi Kuo

Han-Chi Liu

Ren-Chieh Liu

Yi-Hsien Ko

Sen-huang Huang

Kai-Chieh Chuang

Hsien-Chung Tsai

Peng-Sheng Chen

Sung-Yu Tsai

Wei-Chia Huang

Chia-Hung Tseng

There is provided a pixel circuit capable of outputting time difference data and image data, and including an image circuit and a difference circuit. The image circuit is used to record and output detected light energy of a first interval as the image data. The difference circuit is used to record and output a variation of detected light energy between the first interval and a second interval as the time difference data. The pixel circuit selects to output at least one of the time difference data and the image data.

Optical sensor outputting partial image data of pixel array

There is provided a neural signal detection circuit capable of outputting time difference data or neural data, and including a first temporal circuit and a second temporal circuit. The first temporal circuit is used to store detected voltage energy of a first interval and a second interval as the time difference data. The second temporal circuit is used to store detected voltage energy of the second interval as the neural data. The neural signal detection circuit is used to output the time difference data or the neural data in different operating modes.

Neural signal detection circuit outputting time difference data or neural data

There is provided a pixel circuit capable of outputting time difference data or image data, and including a first temporal circuit and a second temporal circuit. The first temporal circuit is used to store detected light energy of a first interval and a second interval as the time difference data. The second temporal circuit is used to store detected light energy of the second interval as the image data. The pixel circuit is used to output a pulse width signal corresponding to the time difference data or the image data in different operating modes.

Pixel circuit selecting to output time difference data or image data

Pixel circuit outputting time difference data and image data, and operating method thereof

Pixel circuit outputting time difference data and image data, and operating method of pixel array

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.

Sensor circuit having identical capacitors to improve sensing efficiency of pixels and operating method thereof

Pixel circuit having capacitor with identical electrodes to improve sensing efficiency and operating method thereof

Pixel circuit to improve sensing efficiency, image sensor using the same and operating method thereof

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.

Image sensor apparatus and processing circuit capable of preventing sampled reset/exposure charges from light illumination as well as achieving lower circuit costs

Circuit to improve sensing efficiency of pixels

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.

Image sensor and control method for the same

A method of image sensor apparatus includes: providing pixel array having pixel units arranged in M rows and N columns; providing N parallel column readout circuits each being arranged for reading out pixel data of one corresponding column; disposing a horizontal shift register in row direction coupled to the N parallel column readout circuits, to receive a pulse signal and a clock signal, sequentially shift a phase of the pulse signal according to the clock signal, and scan a corresponding column according to the shifted phase of the pulse signal; and using a column select circuit having N latches to receive a power down digital control signal transmitted from a microcontroller wherein the power down digital control signal is used to disable at least one column readout circuit to enable and select a portion of the set of N parallel column readout circuits.

Image sensor apparatus and method capable of rapidly reading out and processing pixel voltages of pixel array

A column parallel ADC circuit includes: plural column ADCs and a digital processing circuit. The plural column ADCs generate respective plural digital counts. The plural column ADCs include a first column ADC and a second column ADC. The first column ADC generates a first digital count according to a first analog signal, and the second column ADC generates a second digital count according to a second analog signal. The first digital count is a difference between a first digital signal and a second digital signal. The first and the second digital signals correspond to the first and the second analog signals respectively. The digital processing circuit generates the plural digital signals, wherein the digital processing circuit generates the first digital signal according to the first digital count and the second digital signal.

Growing community of inventors

Hsin-Chu County, Taiwan

Yi-Cheng Chiu