A system and method for realizing multi-picture based on serial differential switch

Abstract

The invention discloses a system and a method for realizing multi-picture based on a serial differential switch. An image processing unit for implementing the method comprises a plurality of decoding modules and encoding modules which are connected with each other through serial differential interfaces. The method comprises the following steps: when each of the decoding modules is connected with the serial differential switch through the serial differential interfaces, zooming received image data to small picture image data in multi-picture image data by the decoding modules; transmitting the small picture image data to the encoding modules through the serial differential switch; and combining a plurality of small picture image data into multi-picture image data by the encoding modules. Because the transmission of image data is realized by the serial differential switch, a bottleneck problem of video bandwidth is solved so that a conference television user can receive high-definition multi-picture clearly; and simultaneously, the number of digital signal processors can be selected as required according to the maximum number of the multi-picture, which not only saves implementation cost for low-end users, but also meets the requirements of high-end users by increasing the number of the digital signal processors.

Description

technical field [0001] The invention relates to the technical field of video conferencing, in particular to an improvement of a system and method for realizing multi-picture based on a serial differential switch. Background technique [0002] Conference TV is a communication method that has emerged in recent years. Its advent greatly shortens the communication distance between people and changes the previous conference mode. It can not only save manpower and financial resources, but also improve work efficiency. On the one hand, the video conference system picks up images and sounds through cameras and microphones, converts them into digital signals through encoders and compresses them, and transmits the signals in the communication network; on the other hand, participants in the conference decompose the received digital signals The compression is restored to an analog signal, which is played out through the display device and speakers; the whole process is basically carried...

AI Technical Summary

Problems solved by technology

However, the traditional multi-picture technology supports a maximum picture resolution of 4CIF (576*704), so that the maximum resolution of a small picture in multiple images seen by participants is CIF (288*352); here, CIF (Common Intermediate Format) is a commonly used standardized image format, because of the low resolution, the viewing effect is also affected

With the improvement of network bandwidth and the advancement of image processing technology, users have higher and higher requirements for the resolution of conference TV images. In the past, the multi-picture synthesis technology of HPI host interface or processor bus, PCI bus and Ethernet interconnection was lacking. Very good scalability and tailoring, can no longer meet the needs of users

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