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Video image sending circuit based on ARINC818 protocol

A technology for sending circuits and video images, applied in the computer field, can solve the problems of high resource consumption, complex circuit scale, poor real-time performance, etc., to meet the transmission requirements, the circuit implementation is simple, and the resource occupancy is small.

Active Publication Date: 2018-05-11
西安翔腾微电子科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional method adopts the method of caching multiple lines of data at the sending end, and then sending after caching a certain number of video lines, the circuit scale is complex, the resource consumption is high, and the real-time performance is poor

Method used

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  • Video image sending circuit based on ARINC818 protocol

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with accompanying drawing and embodiment:

[0012] Such as figure 1 Shown, a kind of video image transmission circuit based on ARINC818 agreement is characterized in that: comprise transmission buffer control unit 1, transmission buffer unit 2, ADVB frame encapsulation and frame transmission unit 3;

[0013] The sending buffer control unit 1 rearranges and buffers the signals output by the video decoding chip, and uses the video associated clock as the working clock of the circuit. The video synchronization signal Vs represents the beginning of an image, Hs represents the beginning of a row of data images, and Dz represents the video The validity of the data adopts a single-line cache mechanism. Generate a rev_ctrl signal to the ADVB frame packaging and frame sending unit 3, the rev_ctrl signal is a data buffer status signal, and is valid when it is detected that the data stored in the buffer is half ...

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Abstract

The invention, which belongs to the technical field of computers, relates to a video image sending circuit based on an ARINC818 protocol. The video image sending circuit is composed of a sending buffering control unit 1, a sending buffering region unit 2, and an ADVB frame packing and a frame sending unit 3. According to the circuit, sending of a video image based on one-row video data buffer regions under the ARINC 818 protocol is realized; the buffer region has the bit width of 32 and the depth is equal to the number of 32-bit splicing of one row of video data based on pixels. On the basis of staggered-time reading and writing on the buffer region, fastest transmission of the ADVB frame, packaged based on the ARINC protocol, of the video image is realized. The occupied resources are reduced; the real-time performance of video image sending is good; the compatibility with various video resolutions on the condition of 2.125-Gbit / s bandwidth is realized; and the transmission requirementof the video image based on the ARINC818 protocol is met.

Description

technical field [0001] The invention belongs to the technical field of computers and relates to a video image sending circuit based on the ARINC818 protocol. Background technique [0002] Compared with the traditional bus, ARINC818 has very obvious technical advantages. It can provide high-bandwidth, high-reliability and low-latency links, and can well meet the technical design requirements of the new generation of avionics systems. [0003] The traditional method adopts the method of multi-line data buffering at the sending end, and then sends after buffering a certain number of video lines. The circuit scale is complex, resource consumption is high, and real-time performance is poor. Contents of the invention [0004] The purpose of the present invention is: provide a kind of single line buffering video image transmission circuit based on ARINC818 agreement, it carries out single line data buffering at the sending end, resource occupation is few, circuit realization is s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/14H04N5/38
CPCH04N5/14H04N5/38
Inventor 杨海波王玉欢郭亮王泉
Owner 西安翔腾微电子科技有限公司
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