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Full-frame image sensor

An image sensor and full-frame technology, which is applied in the field of image sensors, can solve problems such as deformation, image distortion, and inapplicability to full-frame image sensors, and achieve the effects of increasing frame rate, improving work efficiency, and avoiding image distortion and deformation

Active Publication Date: 2017-05-31
SHANGHAI INTEGRATED CIRCUIT RES & DEV CENT +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

That is to say, for the traditional image sensor composed of x rows and y columns of roller pixels, the exposure time of the first row and the first column is different from the exposure time of the xth row and the xth column. There is no problem for the application of ordinary SLR cameras, but for image sensors with high frame rate, it will cause obvious image distortion and deformation, which is not suitable for full-frame image sensors

Method used

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Embodiment Construction

[0022] In order to make the purpose and features of the present invention more obvious and understandable, the specific implementation of the present invention will be further described below in conjunction with the accompanying drawings. However, the present invention can be implemented in different forms and should not be limited to the described embodiments.

[0023] The present invention provides a full-frame image sensor. The full-frame image sensor adopts a pixel array of 4124 rows*6024 columns, and uses a global exposure method to make all pixels of the pixel array start and end exposure at the same time, and then perform readout work. The effective pixels of the pixel array are a matrix of 4000 rows*6000 columns.

[0024] Please refer to figure 1 The full-frame image sensor proposed in this embodiment includes a 4124*6024 (may also be denoted as 4124×6024) pixel array 1, a readout circuit module 2, a digital amplification module 3, a channel selection module 4, a contr...

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Abstract

The invention provides a full-frame image sensor. The full-frame image sensor is characterized in that a pixel array with size of 4124*6024; a global exposure manner is used for starting and ending exposure of all the pixels of the pixel array at the same time; then reading operation is carried out; the full-frame photography can be achieved; the size of the photographed maximum image is 4096*6000; distortion and deformation of images caused by drum exposure can be avoided; in addition, different operation time sequences of PGA and ADC of a reading circuit module and GSEL and LVDS of a channel selection module are superposed by a digital circuit of a control module; the four parts operate in a flow line manner; the operation efficiency is greatly improved; the frame rate of the image sensor is increased.

Description

technical field [0001] The present invention relates to the technical field of image sensors, in particular to a full-frame image sensor. Background technique [0002] Full frame is for the size of traditional 35mm film. The size of a full-frame CMOS image sensor is the same as that of a 35mm film, generally close to 36mm*24mm. Generally speaking, the size of the pixel array of the full-frame image sensor is large, and the size of a single pixel under the same number of pixels is also large, so better image quality and color expression can be obtained. Because of this, the full-frame DSLR is the premium camera among DSLRs. [0003] Traditional digital SLR cameras generally use Rolling Shutter Pixels. The principle of signal reading is that when the gate signal of the transfer transistor (TX) is set high, the signal of the photodiode (PD) will be transmitted. When the gate terminal signal of a reset transistor (RX) is pulled to a high level, the charge of the floating diff...

Claims

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Application Information

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IPC IPC(8): H04N5/378H04N5/359
CPCH04N25/62H04N25/75
Inventor 李琛温建新张小亮皮常明杨海玲张桂迪
Owner SHANGHAI INTEGRATED CIRCUIT RES & DEV CENT
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