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Four-channel video conversion circuit based on FPGA and conversion method

A technology of video conversion and conversion method, which is applied in the direction of standard conversion, TV, electrical components, etc. It can solve the problems of high cost, cumbersome conversion work, and complicated hardware structure of the conversion circuit, and achieve material cost saving, high flexibility, and high-speed conversion Effect

Inactive Publication Date: 2018-11-09
GUIZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved in the present invention: provide a kind of FPGA-based four-channel video conversion circuit and conversion method, to solve the need for prior art multi-channel BT. 656 signal decoding, image enhancement, and the conversion of video signals through HDMI Technical problems such as cumbersome work, complex hardware structure of the conversion circuit, and high cost

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  • Four-channel video conversion circuit based on FPGA and conversion method
  • Four-channel video conversion circuit based on FPGA and conversion method
  • Four-channel video conversion circuit based on FPGA and conversion method

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Embodiment Construction

[0036] An FPGA-based four-channel video conversion circuit includes a composite video separation module, a front-end processing module and a display module, the composite video separation module is connected to the front-end processing module by wires, and the front-end processing module is connected to the display module by wires.

[0037]The composite video separation module is a decoding chip TW2867; the decoding chip TW2867, and the decoding chip TW2867 separates 4-way ITU-R BT. 656 signals; input to the input terminal of the front-end processing module.

[0038] The front-end processing module includes four ITU-R BT. 656 decoding modules, four deinterlacing modules, four writing data finishing modules, four reading data finishing modules, multi-channel writing module, multi-channel reading module, data Encapsulation module, DDR2 read-write controller, the input ends of the four ITU-R BT. 656 decoding modules are respectively connected with the four output channels of the c...

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Abstract

The invention discloses a four-channel video conversion circuit based on FPGA and a conversion method. The conversion circuit comprises a composite video separation module, a front-end processing module and a display module, the composite video separation module is connected to the front-end processing module through a wire, and the front-end processing module is connected to the display module through a wire. According to the conversion circuit and the conversion method, the problems that in the prior art, multi-path BT.656 signal decoding and image intensifying are needed, a video signal isoutput through HDMI, the conversion work is complex, a hardware structure of a conversion circuit is complex, the cost is high and the like can be solved.

Description

technical field [0001] The invention belongs to video conversion technology, in particular to an FPGA-based four-channel video conversion circuit and conversion method. Background technique [0002] In recent years, HDCVI, HDTVI and other analog video transmission schemes have emerged. The TV signal output by the analog camera is encoded and sent by the sending chip of HDCVI and other schemes, and the receiving chip decodes and restores the video in BT. 656 format and then sends it to the video processing system. The video collected by the analog camera can be transmitted over a long distance, lossless and high-definition, and it adopts point-to-point transmission, which can achieve no delay and is compatible with the existing analog video surveillance network. Therefore, the video surveillance system adopting this kind of scheme can better solve the problem of long-distance transmission of analog signals, and provides the possibility for digital processing of analog signals...

Claims

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Application Information

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IPC IPC(8): H04N7/01
CPCH04N7/01H04N7/012
Inventor 陆安江赵麒向梓豪
Owner GUIZHOU UNIV
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