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A Method for Transmitting Bidirectional Auxiliary Data Based on SDI

A technology of auxiliary data and data, applied in the direction of cable transmission adaptation, two-way working system, etc., can solve the problems of inability to transmit other useful data, complicated communication, etc., and achieve the effect of solving the cumbersome communication between the two parties.

Active Publication Date: 2017-12-26
GUANGZHOU AVA ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a method for transmitting bidirectional auxiliary data based on SDI to solve the technical problem that the current SDI transmission method cannot transmit other useful data and the communication between the two parties is cumbersome during long-distance transmission

Method used

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  • A Method for Transmitting Bidirectional Auxiliary Data Based on SDI
  • A Method for Transmitting Bidirectional Auxiliary Data Based on SDI
  • A Method for Transmitting Bidirectional Auxiliary Data Based on SDI

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Embodiment Construction

[0021] The following description and drawings illustrate specific embodiments of the invention sufficiently to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely represent possible variations. Individual components and functions are optional unless explicitly required, and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The scope of embodiments of the present invention includes the full scope of the claims, and all available equivalents of the claims. These embodiments of the present invention may be referred to herein, individually or collectively, by the term "invention", which is for convenience only and is not intended to automatically limit the application if in fact more than one invention is disclosed The scope is any individual invention or inventive concept.

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Abstract

The invention discloses a method for transmitting two-way auxiliary data based on SDI, comprising: a data MUX unit inserts downlink user data into an unused audio channel, and packs the downlink user data into audio data packets according to the SDI embedded audio standard, and cooperates The audio data is embedded into the video line blanking area together; the receiving end performs descrambling and decoding, separates the video data, de-embeds the audio data, and extracts useful downlink user data in the specified audio channel; the sending end receives the receiving end through the same The uplink user data sent by the axial cable, and unpack the uplink user data returned by the receiving end. It breaks the limitation that the existing SDI can only transmit audio and video, thus effectively solving the problem of SDI transmission singleness and the cumbersome communication between the two parties during long-distance transmission, and it can also transmit bidirectional useful information in real time even when there is no video source signal transmission. User data.

Description

technical field [0001] The invention relates to a method for transmitting control signals during audio and video signal transmission, in particular to a method for transmitting bidirectional auxiliary data based on SDI. Background technique [0002] As people's demand for digital consumption continues to increase, so does the demand for high-performance high-definition digital video. Among the many audio and video transmission methods, the serial digital interface (SDI, Serial Digital Interface) transmission method is widely used in security, broadcasting, etc. level, video conferencing and other industries. For example, compared to the high-definition multimedia interface (HDMI, High Definition Multimedia Interface) transmission method with a relatively short transmission distance, and the video graphics array (VGA, Video Graphics Array) transmission method that is easily interfered in the process of transmitting analog signals, SDI transmission The method uses a coaxial ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/14H04N7/10
Inventor 欧俊文
Owner GUANGZHOU AVA ELECTRONICS TECH CO LTD