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Method and equipment for processing video stream in digital video broadcast system

A technology of digital video broadcasting and equipment, applied in parts of TV systems, two-way working systems, TVs, etc., can solve problems such as poor picture quality, and achieve the effect of increasing bandwidth utilization and increasing cost/complexity

Inactive Publication Date: 2008-06-18
INT BUSINESS MASCH CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the data is incomplete, the resulting image quality is very poor, as shown in Figure 6(b), there will be serious mosaic images
This is simply unacceptable in the experience of most end users

Method used

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  • Method and equipment for processing video stream in digital video broadcast system
  • Method and equipment for processing video stream in digital video broadcast system
  • Method and equipment for processing video stream in digital video broadcast system

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Embodiment Construction

[0027] Embodiments of the method and system for processing content streams in a digital video broadcasting system of the present invention will be described in detail below with reference to the accompanying drawings, but it should be noted that the following descriptions are only for purposes of illustration and description, and It does not constitute a limitation of the present invention. A lot of technical details are described below in order to explain the present invention more clearly, and enable those skilled in the art to realize the present invention accordingly, but this does not mean that the realization of the present invention must rely on these details; The invention may be practiced without some of the features described, or with additional or different features.

[0028] In order to illustrate the method of the present invention better, here at first in conjunction with attached image 3 The flow of a common channel change operation method in the digital video...

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PUM

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Abstract

The invention discloses a novel method to enhance the user experience in the digital video broadcasting system, which more particularly relates to the method to enhance the user experience in channel switching, and relates to a mechanism which checks the beginning of a GOP structure of a high resolution content stream and presents a low resolution content before receiving the beginning of the GOP structure of the high resolution content stream, so as to lead the low resolution content to be presented immediately after switching the channel; then, the high resolution content can be switched automatically after the beginning of the new GOP of the high resolution content, which avoids the users having no contents to see during a waiting period.

Description

technical field [0001] The present invention relates to a method and system for processing video streams in a digital video broadcasting system, in particular to a method and system for improving user experience when changing channels. Background technique [0002] Digital video broadcasting systems rely heavily on advanced digital video coding algorithms to provide vivid and vivid content within the limited bandwidth of the transmission channel. Most video coding algorithms today utilize predictive coding to eliminate data redundancy between successively transmitted video frames. Typically, predictive coding starts with a video frame that is coded without reference to any other video frame (we call this an Intra coded frame or I-frame), and subsequent video frames are coded according to this I-frame. frame and other video frames encoded before it (we refer to these frames as reference frames), we refer to them as predictively coded frames. The above-mentioned group of vid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/32H04N7/52H04N7/173
CPCH04N21/236H04N5/50H04N5/46H04N21/4384H04N21/23476H04N21/234363H04N21/64792H04N21/4622H04N21/44016H04N21/434
Inventor 杨雨东林国辉袁昱周游
Owner INT BUSINESS MASCH CORP
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