Method and device for implementing multiple pictures of conference television system, video gateway and implementing method thereof

Abstract

The invention discloses a method for realizing multiple pictures of a video conferphone system, which comprises the steps that: a digital signal processor and a video bit stream input and output module are configured according to instructions of the system; when a video bit stream is inputted, the digital signal processor decodes and encodes videos inputted from each path. The invention also discloses a device for realizing the multiple pictures of the video conferphone system, which comprises a storage module, a master CPU, the video bit stream input and output module, a connecting module, adisplay module and a plurality of digital signal processors. The device is easy for resource collocation and has good extendibility and high design flexibility ratio. In addition, the invention also discloses a video gateway which comprises the storage module, the master CPU, a data input and output module, the connecting module and a plurality of digital signal processors. When in work, the digital signal processors and the data input and output module are configured according to the instructions of the system; when data is inputted, the digital signal processors decode and encode the data of each path, thus being capable of collocating resources flexibly.

Description

technical field [0001] The invention relates to video processing technology, in particular to a multi-picture realization method and device of a conference television system, a video gateway and its realization method. Background technique [0002] As an advanced means of communication, video conference has been widely used in the field of demand counterparts. These application areas include government meetings, distance learning, remote diagnosis, and cross-regional corporate meetings. The conference TV system makes the participants who are thousands of miles away gathered together, and the communication is more convenient, intuitive and accurate, and it saves the user's expenses and improves the work efficiency. [0003] The existing multi-picture realization device of the conference TV system is mainly composed of a main control CPU, a display module and several digital signal processors. The device generally adopts a tree topology structure, that is, the main control CP...

AI Technical Summary

Problems solved by technology

[0004] It is not difficult to see that in the existing devices for realizing multi-pictures of the video conferencing system, since each digital signal processor is connected according to the predicted data flow transmission direction, the number of digital signal processors in the device, each digital signal processing The function of the device and the flow direction of the video stream between the digital signal processors are relatively fixed, that is, the number of picture groups that can be displayed by the video conference system and the number of pictures contained in each group of pictures are relatively fixed. Therefore, the existing conference The multi-picture implementation device of the TV system is not easy to maintain, has poor scalability, and has low design flexibility. Moreover, in the existing multi-picture realization device of the video conference system, the main control CPU and all digital signal processors are connected to the same high-speed bus. , the transmission of video code streams or instructions among the various components of the system needs to pass through this high-speed bus, so the processing capacity of high-definition video code streams with large video code traffic is limited, which is not conducive to the realization of high-definition multi-screen

[0005] In addition, in the prior art, the realization of the video gateway is subject to the constraints similar to the multi-picture realization device of the video conferencing system of the present invention. inflexible distribution

Images