FPGA (Field Programmable Gate Array) based video image compensating method and device

Abstract

The invention provides FPGA (Field Programmable Gate Array) based video image compensating method and device. The device is a DDR3 storage is hung to the outside of the FPGA. The method comprises the steps of storing the images into the DDR3 storage according to frame; determining whether the images are deviated in the horizontal direction; if so, distributing an instruction by a host computer to adjust the reading time of the line data or adjusting the generation time of the line synchronizing signals and carrying out the next step; if not so, carrying out the next step; determining whether the images are deviated in the vertical direction; if so, distributing an instruction by a host computer to adjust the reading time of the first line data or adjusting the generation time of the field synchronizing signals; if not so, remaining the images at the current position in a video display device. The FPGA based video image compensating method and device have the beneficial effects that the user video experience is increased; the adjusting range is out of limitation; special chips are not used; the complexity of development implementation can be reduced; the stability of the system is improved; the cost is reduced.

Description

technical field [0001] The invention relates to the field of video transmission, in particular to an FPGA-based video image compensation method and device. Background technique [0002] In the field of video transmission and display, VGA is still widely used as an analog video signal, but due to the attenuation in the transmission of analog signals, it is easy to be interfered, so that the video screen finally presented on the display device has a frame deviation, or left deviation. Or right, or upward, or downward, which brings a very bad video experience to users. [0003] Therefore, it is necessary to adjust and compensate the video frame to adjust the picture to the middle of the video display device. The existing technology is realized by a dedicated analog chip, and the adjustment range of the up, down, left, and right directions of the screen is limited or only supports a single-dimensional adjustment. It is more complex and therefore affects the stability of the sy...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that, aiming at the defects of the prior art that affect the user’s video experience, the adjustment range is limited, a dedicated chip must be used, the development and implementation process is relatively complicated, the system’s stability is not high, and the cost is high, it provides An FPGA-based video image compensation method and device that improves the user's video experience, has no limit to the adjustment range, does not need to use a dedicated chip, reduces the complexity of the development and implementation process, improves system stability, and reduces costs

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