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Full Frame Image Sensor

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

Active Publication Date: 2020-01-10
SHANGHAI INTEGRATED CIRCUIT RES & DEV CENT +1
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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

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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 present invention provides a full-frame image sensor, which adopts a pixel array with a size of 4124*6024, and adopts 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, so that full-frame shooting can be realized. And the maximum size of the captured image is 4096*6000, which can avoid image distortion and deformation caused by drum exposure; in addition, the different working timings of the four parts of the PGA, ADC of the readout circuit module and CSEL and LVDS of the channel selection module can be The superposition of the digital circuit of the control module enables the four parts to work in a pipeline, which greatly improves the work efficiency and increases the frame rate of the image sensor.

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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Patent Type & Authority Patents(China)
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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