Method, device and system for group switch in monitoring systems

Abstract

The invention discloses a method, a device and a system for group rotating switch in monitoring systems. The method comprises: allocating different multicast group addresses to encoding units in each group and informing the encoding units; triggering the encoding units to continue sending the multicast group addresses allocated by media flow; concurrently sending indication messages to decoding units needing to establish monitoring relation with the encoding units in the group respectively at regular time according to the cycle of group switch; and instructing the decoding units to add the multicast group addresses corresponding to the encoding units and receive media streams. By using the invention, the time for establishing monitoring relation in alternate group switch can be effectively shortened, and the synchronous establishment of multi-channel monitoring relation and the synchronous switch of multi-channel video are realized.

Description

technical field [0001] The present invention relates to the field of network technology, in particular to a group wheel cutting method, device and system in a monitoring system. Background technique [0002] With the development of social economy and the advancement of science and technology, social security facilities are becoming more and more perfect and advanced, which has greatly improved the overall social security environment and promoted the security industry to obtain unprecedented development opportunities. Among them, video surveillance, as the main part of security, has been highly valued by the government, and huge sums of money have been invested in the security projects needed to build a harmonious society in various cities. At present, any monitoring system will use multiple monitors and multiple cameras to establish a monitoring relationship, so that the monitoring images of multiple monitoring points can be viewed and switched at the same time. [0003] Mu...

AI Technical Summary

Problems solved by technology

The problem existing in the prior art is that it has not been able to meet the needs of users in two aspects of establishing monitoring relationship, image display time and image synchronous switching, the main manifestations are as follows:

[0016] After the encoding unit receives the request message from the video management server, it parses out the media stream address and media stream parameters, and then sends it through the real-time transport protocol. Therefore, it takes a long time to respond to the video management server, and the decoding unit waits to receive the media stream at this time, resulting in waiting Image takes longer to display

In addition, for the start of group switching, it is necessary to establish a monitoring relationship between multiple encoding units and multiple decoding units. Currently, the interactive messages are sent and processed serially. Due to the large number of interactive messages, serious The time delay problem, especially when there are many decoding units, the interval from the establishment of the first monitoring relationship to the establishment of the last monitoring relationship is very long, resulting in asynchronous switching and display times of multiple video images

Images