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Data transmission system

A data transmission system and data technology, applied in the field of data transmission, can solve the problems of increasing system cost and not considering the compatibility of video data transmission system, and achieve the effect of reducing system cost

Active Publication Date: 2020-03-27
저장진셍일렉트로닉스테크놀러지컴퍼니리미티드
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this solution is that the corresponding inverse encoding needs to be performed at the receiving end. In this way, since the compatibility with the original video data transmission system is not considered, this solution needs to modify the original video data transmission system. All video sending equipment and video receiving equipment are replaced, which also increases the cost of the system

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0068] figure 1 A schematic structural diagram of a data transmission system provided by an embodiment of the present invention, the system includes: a video sending device 11 and a video receiving device 12; the video sending device 11 includes a first spread spectrum transmitter 111, a superposition module 112 and a first data Receiving module 113; The video receiving device 12 includes a second spread spectrum transmitter 121 and a second data receiving module 122;

[0069] The first spread spectrum transmitter 111 is connected to the superposition module 112, and is used to convert the forward auxiliary data into a first spread spectrum modulation sequence and send it to the superposition module 112;

[0070] The superposition module 112 is connected to the second data receiving module 122, and is used for superimposing the first spread spectrum modulation sequence and the video data to be superimposed, and sending it to the second data receiving module 122;

[0071] The ...

Embodiment 2

[0077] In the data transmission process, in order to meet the requirements of the video receiving device for the video data format, on the basis of the above embodiments, in the embodiment of the present invention, the video sending device further includes a video encoding module 114;

[0078] The video encoding module 114 is connected to the superimposing module 112 and is used for encoding the original video data into composite video data in a digital format to obtain video data to be superimposed and send it to the superimposing module 112 .

[0079] Such as figure 2 As shown, the video sending device also includes a video encoding module, which can encode the original video data according to a preset format. In the embodiment of the present invention, the data obtained after encoding the original video data as the data to be superimposed. The superposition module performs superposition processing on the first spread spectrum modulation sequence and the data to be superim...

Embodiment 3

[0081] In order to ensure that the superposition module can superimpose the first spread spectrum modulation sequence and the video data to be superimposed, on the basis of the above-mentioned embodiments, in the embodiment of the present invention, the video sending device further includes a first sampling rate variation Module 115 and the second sampling rate changing module 116; wherein, the output sampling rates of the first sampling rate changing module 115 and the second sampling rate changing module 116 are the same;

[0082] The first sampling rate changing module 115 is respectively connected with the video coding module 114 and the superimposition module 112, and is used for performing sampling rate conversion processing on the video data to be superimposed sent by the video coding module 114, and sampling The video data to be superimposed after rate conversion processing is sent to the superimposing module 112;

[0083] The second sampling rate changing module 116 i...

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Abstract

The invention discloses a data transmission system. According to the data transmission system of the invention, video sending equipment converts the forward affiliated data into the first spread spectrum modulation sequence through the first spread spectrum transmitter, carries out superposition processing on the first spread spectrum modulation sequence and the to-be-superposed video data throughthe superposition module, and sends the first spread spectrum modulation sequence and the to-be-superposed video data to the second data receiving module in the video receiving equipment. And the video receiving device converts the reverse affiliated data into a second spread spectrum modulation sequence through a second spread spectrum transmitter and sends the second spread spectrum modulationsequence to a first data receiving module in the video sending device. According to the system of the invention, the compatibility of the original video data transmission system can be considered while collinear transmission of the video data and the bidirectional affiliated data is realized, equipment in the original video data transmission system can be utilized to the maximum extent, and the system cost is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of data transmission, in particular to a data transmission system. Background technique [0002] In the field of security, there are more and more demands for adding two-way intercom audio signals, control commands and feedback commands, additional information of video data, and system upgrade data to analog video systems. Since the main function of the analog video system is to process and transmit video data, such other data independent of video data can be collectively referred to as auxiliary data. With the continuous upgrading of security systems, the requirements for the transmission of auxiliary data are getting higher and higher, which is concentrated in two aspects: two-way transmission and reliable transmission. The so-called two-way transmission means that the auxiliary data can be transmitted from the video sending device to the video receiving device, and can also be transmitted from the video ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/2343H04N21/4402
CPCH04N21/2343H04N21/4402
Inventor 吕炳赟方伟
Owner 저장진셍일렉트로닉스테크놀러지컴퍼니리미티드