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Method and system for multiplexing other data in audio-video code stream by using FPGAs (field programmable gate arrays)

A technology of audio, video and data, which is applied in the information field, can solve the problems that users cannot perform interactive control and cannot meet user interaction needs, and achieve the effect of increasing interactivity and enriching content

Active Publication Date: 2012-07-04
SHANGHAI ZHANGMEN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Now the audio and video compression and decompression are widely used, that is, the audio and video signals are compressed by the A / D (analog-to-digital conversion) chip, sent out through the communication line, and then the audio and video signals are received and processed at the other end of the communication line. After D / A (digital-to-analog conversion) decompression, it is sent to the display device. This kind of one-way audio and video transmission and display, the user cannot perform interactive control, and cannot meet the user's interactive needs.

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  • Method and system for multiplexing other data in audio-video code stream by using FPGAs (field programmable gate arrays)
  • Method and system for multiplexing other data in audio-video code stream by using FPGAs (field programmable gate arrays)

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Embodiment Construction

[0049] The method for multiplexing other data in the audio and video code stream with FPGA (Field Programmable Gate Array) of the present invention, the first FPGA is connected with the second FPGA by communication lines, in the first memory (such as PROM, EPROM, flash memory FLASH) Write the working state setting program of the first FPGA in etc.) and be connected with the first FPGA, write the working state setting program of the second FPGA in the second memory (such as PROM, EPROM, flash memory FLASH etc.) Connecting, the first FPGA is connected with audio and video code stream generating equipment and other data generating equipment, and the second FPGA is connected with audio and video terminal equipment and other data processing equipment;

[0050] The first FPGA is set up according to the working state setting program of the first FPGA, and the second FPGA is set up according to the working state setting program of the second FPGA;

[0051] The first FPGA multiplexes t...

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Abstract

The invention discloses a method for multiplexing other data in audio-video code stream by using FPGAs (field programmable gate arrays). The method comprises the following steps of: introducing audio-video data from different sources and the other data into the FPGA; educing output from the FPGA; designing a multiplexing logic in the FPGA at one end; matching the priority control; adding header marks on the audio-video data and the other data and sending the audio-video data and the other data towards outside according to the high-low sequence of the priority; receiving the audio-video data and the other data by the FPGA at the other end; subpackaging according to the header marks; sending the audio-video data to audio-video terminal equipment for display; and outputting the other data to the audio-video terminal equipment for displaying or outputting the other data to other data processing equipment for processing. The invention also discloses a system for multiplexing other data in the audio-video code stream by using the FPGA. The invention can realize multiplexing of other data in the audio-video code stream, can increase interactivity and can enrich the content displayed by the video.

Description

technical field [0001] The invention relates to information technology, in particular to a method and system for multiplexing other data in audio and video streams by using FPGA. Background technique [0002] Now the audio and video compression and decompression are widely used, that is, the audio and video signals are compressed by the A / D (analog-to-digital conversion) chip, sent out through the communication line, and then the audio and video signals are received and processed at the other end of the communication line. It is decompressed by D / A (digital-to-analog conversion) and sent to the display device. This kind of one-way audio and video transmission and display prevents the user from interactive control and cannot meet the user's interactive needs. [0003] FPGA (Field-Programmable Gate Array, Field Programmable Gate Array), as a semi-custom circuit in the field of application-specific integrated circuits (ASIC), adopts the concept of logic cell array LCA (Logic Ce...

Claims

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Application Information

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IPC IPC(8): H04N7/24H04N7/52
Inventor 袁斯华周智
Owner SHANGHAI ZHANGMEN TECH