Data processing and transmitting system of high-speed multichannel CCD (charge-coupled device)

Abstract

The invention discloses a data processing and transmitting system of high-speed multichannel CCD (charge-coupled device), which comprises a CCD analog front end, a data processing unit, a high-speed serial transmission unit and a high-speed image data collection system which are sequentially connected. The CCD analog front end is used for converting an analog signal output by a CCD detector and subjected to sampling and pulse control into n channels of digital image data via n A / D (analog / digital) converters, transmitting the digital image data to the data processing unit, and acquiring data of each channel at the same time. The data processing unit is used for transmitting single-channel high-speed data streams, a data transmitter clock and a horizontal synchronizing signal acquired from integration of the digital image data to the high-speed serial transmission unit. The high-speed serial transmission unit is used for converting single-channel high-speed data streams via LVDS (low-voltage differential signaling) serial chips into high-speed LVDS data streams for transmitting. The high-speed image data collection system is used for collecting the high-speed serial LVDS data streams and realizing real-time storing and displaying of the image data.

Description

technical field [0001] The invention is suitable for real-time processing of image data of a high-speed high-definition multi-channel CCD, belongs to the field of high-speed real-time data processing, and in particular is a high-speed multi-channel CCD data processing and transmission system. Background technique [0002] Most of the high-resolution CCD detectors adopt a high-speed multi-channel parallel output structure. The high speed is due to the high readout frequency of the CCD pixel due to the high resolution, thus generating image data with a high data rate. "Multi-channel" has two meanings: one is to meet the width requirements of the imaging object, using multiple CCD splicing; the other is to ensure the complete transfer and output of signal charges, CCD uses multiple taps to output in parallel. This will inevitably lead to a sharp increase in the amount of CCD image data after digitization, which increases the difficulty of high-speed processing and transmission ...

AI Technical Summary

Problems solved by technology

The traditional image data transmission method "TTL / COMS" data channel is difficult to meet the requirements of high-resolution detectors: first, the physical layer interface cannot meet the data transmission rate; It also increases; third, the increase in the number of data buses and the acceleration of the transmission rate will increase the difficulty of PCB wiring, and increase the delay and mutual interference of signals

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