A method for delayed broadcasting and security guarantee of ip digital TV

Abstract

The invention discloses a method for delayed broadcasting and security assurance of IP digital TV. The delayed broadcasting step includes: setting the signal source address of each channel, the network card for receiving the source signal, the delay time, the signal output address and Network card for signal output; IP stream delayer receives the source signal, automatically judges to cache the data in memory or hard disk; saves the data in the channel data queue of memory or hard disk, and calculates the sending time after the data delay; When the time reaches the time when the data packet at the head end of the channel data queue should be sent, output the data from the designated signal output network card; the safety protection steps include: discarding illegal data and dual-machine hot standby. According to the status of system resources and the specified delay time, the present invention automatically judges to cache data in the memory or hard disk, and supports long-time delay of a large number of channels; the network physically isolates the IP signal source and the back-end equipment to ensure network security; The equipment can be seamlessly switched, bringing more effective protection for broadcast safety.

Description

technical field [0001] The invention relates to the field of IP digital broadcasting television and the field of network security, in particular to a method for delayed broadcasting and security guarantee of IP digital television. Background technique [0002] In recent years, after the digitalization of the radio and television industry has been basically realized, IP has followed one after another. Compared with traditional SDI and ASI, IP has the advantages of low cost, long transmission distance, convenient layout and maintenance, etc. Many new construction projects prefer IP-based broadcasting processes, so IP-based broadcasting supporting equipment has emerged to improve the overall function of IP-based broadcasting. [0003] A problem that comes with IP is that network security is reduced. In the traditional SDI and ASI broadcasting environment, the signal is carried by a dedicated coaxial cable, and the equipment will not be infected with viruses, and network secur...

AI Technical Summary

Problems solved by technology

[0003] A problem that comes with IP is: reduced network security

[0007] Disadvantages: small memory capacity, fewer supported channels, and shorter delay time

[0011] Disadvantages: Repeated reading and writing of the hard disk has a slight impact on the lifespan, and the lifespan will be lower than that of the memory

[0012] It is only applicable to the extreme cases with many delay channels (tens of channels) and long delay time (tens of hours or even tens of days)

Images