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TDICMOS imaging system with low overflow and low trailing

An imaging system and imaging technology, applied in parts of TV systems, image communication, color TV parts, etc., can solve problems such as image smearing, incompleteness, and photosensitive image pollution, so as to avoid smearing and pollution Effect

Pending Publication Date: 2022-02-25
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Summary
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The present invention solves the pollution of the photosensitive image due to unclean charges accumulated by the unused photosensitive series in the prior art and too many TDI integral series, resulting in charge overflow and incomplete transfer, and smearing on the image Phenomena and other problems, provide a TDICMOS imaging system with low overflow and low tailing

Method used

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  • TDICMOS imaging system with low overflow and low trailing
  • TDICMOS imaging system with low overflow and low trailing
  • TDICMOS imaging system with low overflow and low trailing

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Embodiment Construction

[0016] combine Figure 1 to Figure 3 Describe this embodiment mode, the TDICMOS imaging system with low overflow and low tailing, such as figure 1 As shown, after the charge transfer signal output by the imaging FPGA passes through the driver, the amplified charge transfer signal is output to the TDICMOS detector for charge transfer control; the control signal output by the imaging FPGA passes through the level shifter, and the output level shifts The final control signal is sent to the TDICMOS detector to update the SPI register of the detector and the relevant timing control inside the detector; the serial image data output from the detector is trained and integrated by the internal data of the FPGA to output sequential parallel image data to The 2711 module finally outputs the integrated high-speed serial image data.

[0017] In this embodiment, the timing of each row includes two parts: normal readout and reverse clearing, and the time length of reverse clearing varies wi...

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PUM

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Abstract

The invention discloses a TDICMOS imaging system with low overflow and low trailing, relates to the technical field of TDICMOS imaging, and solves the problems in the prior art that pollution of a photosensitive image is caused by the fact that charges accumulated by unused photosensitive stages are not cleared thoroughly, excessive TDI integral stages cause charge overflow, incomplete transfer and the trailing phenomenon on the image, and the like. According to the invention, removal without photosensitive charges is carried out at a tail section of each line, and influences of a removal operation on charges in a useful photosensitive area are avoided through switching of integral stages and a time sequence reset operation; and incident light energy is estimated by estimating a solar altitude and surface feature reflectivity, and the trailing phenomenon caused by excessive accumulated charges is avoided by setting the reasonable integral stages. Therefore, under the condition that the incident light energy is relatively strong, an image with high imaging quality is obtained, overflow is avoided, and trailing is avoided.

Description

technical field [0001] The invention relates to a low-spill and low-smear TDICMOS imaging system, in particular to a low-spill and low-smear TDICMOS imaging system based on aerospace applications. Background technique [0002] When the TDICMOS detector performs two-way TDI integration, if the charge accumulated in the photosensitive area corresponding to the unused photosensitive level is not cleaned, it may overflow to the photosensitive area in use, causing contamination of the photosensitive image. If the incident light energy of the detector is too strong and too many integral series are used at the same time, the charge accumulated by TDI will far exceed the charge amount of the full well of the pixel, which may cause charge overflow and incomplete transfer, and smearing phenomenon will appear on the image . Contents of the invention [0003] The present invention solves the pollution of the photosensitive image due to unclean charges accumulated by the unused photos...

Claims

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Application Information

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IPC IPC(8): H04N5/217H04N5/353H04N5/374
CPCH04N25/63H04N25/533H04N25/768
Inventor 余达刘金国周怀得孔德柱陈佳豫赵莹宋元章
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI