Smartsens Technology (hk) Co, Limited

Smartsens Technology (cayman) Co., Limited

Guanjing Ren

Yaowu Mo

Jinjian Hou

Chen Hui Xu

Xiaoyong Wang

Guang Yang

Jing Yang

Zexu Shao

Weijian Ma

Xiao Xie

Wenjie Shi

Yue Ping Li

Wei Wang

Zhi Zhou

Shengxin Zhang

Jiaqing Hou

Xuanping Zhou

Jiawei Heng

Weijan Ma

This application belongs to the technical field of semiconductor devices, and relates to a pixel circuit, a control method, and an image sensor, including: at least two pixel units arranged in an array, wherein transmission transistors of at least two pixels of at least one pixel unit are connected to a corresponding first group of transmission control lines, and a transmission transistor of one other pixel is connected to a corresponding second group of transmission control lines. Therefore, the pixel circuit, the control method and the image sensor provided in the present application can control the density of phase focus of the image sensor by controlling the first group of transmission control lines and the second group of transmission control lines without changing the structure of the pixel, the structure is simple, and the optical performance is good.

Pixel circuit, control method and image sensor

This application belongs to the technical field of semiconductor devices, and relates to a pixel circuit, a control method, and an image sensor, including: at least two pixel units arranged in an array, wherein transmission transistors of two pixels of at least one pixel unit are connected to a corresponding first group of transmission control lines, and transmission transistors of other pixel unit are connected to a corresponding second group of transmission control lines. Therefore, the pixel circuit, the control method and the image sensor provided in the present application can control the density of phase focus of the image sensor by controlling the first group of transmission control lines and the second group of transmission control lines without changing the structure of the pixel, the structure is simple, and the optical performance is good.

Pixel circuit, control method, and image sensor

A CMOS image sensor with an imaging array of pixels containing selected pixels wherein illumination from a normal image is received by one set of pixels and illumination from an LED light source is received by another. The readout method serially separates the normal image signal from the LED light sourced signal. The signal from the selected pixels is resilient against saturation and thereby contributes to increased HDR. The image sensor array and readout method may be incorporated within a digital camera.

CMOS image sensor pixel array and readout method with LED flicker mitigation

An image sensor array and circuit design and method employing a voltage and current detection circuit capable of quantifying a power signal, grounding signal, internal reference voltage and internal reference current. An image sensor comprising the invented circuit design may be incorporated within a digital camera.

CMOS image sensor with internal reference voltage and current detecting circuit and method

The present application provides a pixel structure, an image sensor, a device, an image processing method and a control method. The pixel structure includes a plurality of first pixels and a plurality of second pixels, where the first pixels adopt first photoelectric conversion elements arranged in an array and provided with high sensitivity, and the second pixels adopt second photoelectric conversion elements arranged in an array and provided with low sensitivity, to realize compatible recognition of high-brightness information and low-light information by the image sensor and improving the dynamic range; the first photoelectric conversion elements and the second photoelectric conversion elements adopt a design of independent output circuits to realize separate output of electrical signals without interfering with each other, which improves recognition reliability and signal utilization recognition; the overall performance of the image sensor can also be improved based on layout of the pixel structure of the present application.

Pixel structure, image processing method and control method

An imaging system with an array of pixel cell units having four photodiodes sharing the same readout amplifier, row select transistor, microlens and filter color. Some pixel cell units provide a phase detection autofocus function. The imaging system provides the option of imaging with phase detection autofocus and with or without horizontal or vertical binning readout modes, or both simultaneously, to form an a full resolution image of the target scene with improved effective frame rate and improved slow motion imaging.

Four shared pixel with phase detection and horizontal and vertical binning readout modes

Disclosed are a pixel unit, and an imaging method and apparatus thereof. The pixel has a first and a second pixel sub-portion each comprising one or more photodiodes; one or more transfer transistors each coupled to a floating diffusion, for transferring the charges generated by the one or more photodiodes in response to incident light during an exposure period and accumulated in the photodiode during said exposure period respectively to the floating diffusion; a reset transistor; and a source follower transistor coupled to the floating diffusion for amplifying and outputting the pixel signal of the floating diffusion. In some embodiments, the pixel further includes a capacitor and a gain control transistor.

Pixel unit with a design for half row reading, an imaging apparatus including the same, and an imaging method thereof

An image sensor pixel noise suppression circuit having a source follower transistor based pixel circuit, a power supply voltage and noise mirror circuit, a power supply voltage and noise gain circuit, and a comparator circuit. An output of the comparator circuit provides an image related output signal wherein the noise component of the source follower signal has been suppressed. The invention further includes a CMOS image sensor containing the image sensor pixel noise suppression circuit.

CMOS image sensor with pixel power supply noise suppression circuit

An image sensor array and circuit design employs a method of black level compensation to address vertical image shading related to global exposure image capture and rolling row by row readout schemes. An image sensor having the invented black level compensation pixel array and method may be incorporated within a digital camera.

CMOS image sensor with image black level compensation and method

Disclosed are a pixel unit, and an imaging method and apparatus thereof. The pixel comprises a first and a second pixel sub-portion each comprising one or more photodiodes; one or more transfer transistors each coupled to a floating diffusion, for transferring the charges generated by the one or more photodiodes in response to incident light during an exposure period and accumulated in the photodiode during said exposure period respectively to the floating diffusion; a reset transistor; and a source follower transistor coupled to the floating diffusion for amplifying and outputting the pixel signal of the floating diffusion. In some embodiments, the pixel further includes a capacitor and a gain control transistor.

An imaging sensor having a pixel array with a separate analog-to-digital conversion (ADC) circuit coupled on an input side to each column line and on an output side to a separate M-bit wide digital memory circuit and a column data readout circuit comprising N M-bit data shifters. Each M-bit data shifter has an M-bit wide output, and single pole double throw (SPDT) switches whose common terminals provide inputs to the M-bit data shifters, wherein a first switch state of the SPDT switches connects the input of their associated M-bit data shifters to their associated M-bit wide digital memory circuits and wherein a second switch state of the SPDT switches connects the input of their associated M-bit data shifters to an M-bit wide output bus from an adjacent M-bit data shifter.

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Shanghai, China

Guanjing Ren