Data transmission method and device for video monitoring system

A data transmission method and a technology of a video monitoring system, which are applied in closed-circuit television systems, transmission systems, digital video signal modification, etc., and can solve problems such as video interference

Active Publication Date: 2013-06-12
ZHEJIANG UNIVIEW TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a data transmission method and device in a video monitoring system, so as to solve the above video interference problem without using encryption and decryption methods

Method used

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  • Data transmission method and device for video monitoring system
  • Data transmission method and device for video monitoring system
  • Data transmission method and device for video monitoring system

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Embodiment Construction

[0063] The technical solution provided by the present invention does not use the existing encryption and decryption methods when solving the insecurity of forgery and insertion of RTP data streams, but fills in a specific check value, which can realize anti-forgery and insertion of RTP data streams .

[0064] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0065] see figure 2 , see figure 2 , figure 2 The basic flowchart provided for the embodiment of the present invention. Such as figure 2 As shown, the process may include the following steps:

[0066] Step 201 , the sending end and the receiving end store a random seed (SEED) corresponding to the data with a size of N bits before the receiving end requests the data.

[0067] Here, N can specifically take a value that is a multiple of 8, su...

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Abstract

The invention provides a data transmission method and a data transmission device for a video monitoring system. The method comprises that: A, a transmitter and a receiver store a random seed which corresponds to data and has the size of N bits before the receiver makes a request for the data, wherein N is a positive integer; and B, the transmitter selects the data with the size of M bits from thedata requested by the receiver, performs an encryption operation on the selected data and the random seed to obtain a first numerical value, and transmits the first numerical value and the data requested by the receiver to the receiver, so that the receiver can judge whether to decode the received data or not according to the first numerical value and the random seed stored by the step A. By the method and the device, the problem of video interference can be solved without using encryption and decryption ways.

Description

technical field [0001] The invention relates to the technical field of video monitoring, in particular to a data transmission method and device in a video monitoring system. Background technique [0002] In current video surveillance systems, various manufacturers widely use Real-time Transport Protocol (RTP: Real-time Transport Protocol) as a bearer protocol for transmitting video streams. Here, RTP is essentially a network transmission protocol, which was announced in RFC 1889 in 1996 by the multimedia transmission working group of IETF. RTP itself does not provide on-time delivery mechanisms or quality of service (QoS) guarantees, and RTP cannot guarantee delivery or prevent out-of-order delivery, thereby making it impossible to determine the reliability of the underlying network. Usually, in the actual monitoring system application, considering factors such as the cost of the front-end encoding equipment, the RTP video data is generally not encrypted, and because the In...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H04N7/26H04N7/18H04L29/06H04N19/467
Inventor嵇斌
OwnerZHEJIANG UNIVIEW TECH CO LTD