Multi-scenario digital television implementation method

Abstract

The invention provides a multi-scenario digital television implementation method. As for a digital television program for simultaneously providing a plurality of scenario videos, each scenario video encodes a standard-definition basic layer and a high-definition enhancement layer by the aid of spatial scalable video coding technology. When a certain scenario is played in a full-screen manner, the standard-definition basic layer and the high-definition enhancement layer of the scenario are completely decoded to form a high-definition video. When a certain scenario is played with a low resolution ratio in a picture-in-picture or 'mosaic' mode, only the standard-definition basic layer of the scenario is decoded. Compared with the prior art, the multi-scenario digital television implementation method has the advantages that standard-definition videos and high-definition videos of the scenarios can be simultaneously provided, digital television terminals such as a set-top box do not need to perform high-definition decoding for all the scenarios in multi-scenario display, the problem of insufficiency of processing capacity of the digital television terminals such as the set-top box is solved, and the audience can simultaneously enjoy multi-scenario high-definition videos.

Description

technical field [0001] The invention relates to the technical field of digital television, in particular to a method for realizing multi-scene digital television. Background technique [0002] On-site broadcasting of sports games is an important part of TV. Generally, more than ten to dozens of camera positions are deployed on site (such as figure 1 101, 102 to 103), each camera shoots multiple targets from multiple angles to form audio-visual signals of different scenes ( figure 1 middle 104, 105 to 106), audio and video signals are converged to the video switcher ( figure 1 Middle 107), by the director ( figure 1 middle 108) to control real-time selection and switching to realize one channel of video ( figure 1 109) output through the TV system ( figure 1 110) broadcast and broadcast transmissions, enabling large audiences ( figure 1 115, 116 and 117) through their respective TV sets ( figure 1 112, 113 and 114) for reception and appreciation. Different audiences ha...

AI Technical Summary

Problems solved by technology

[0003] Under analog TV technology, one channel of video and audio needs to occupy one TV channel (generally identified by its center frequency, hereinafter referred to as frequency point in digital TV), due to limited frequency resources, it is difficult to provide multiple channel to transmit multiple different scenes

And except for a small number of TVs with "picture-in-picture" functions that can receive two channels at the same time, most TVs can only receive one channel, and it is difficult to display multi-scene videos on multiple channels at the same time.

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