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

A technology for digital video broadcasting and video playback. It is used in two-way working systems, television, and pulse-modulated television signal transmission. It can solve problems such as ineffectiveness and unrealistic cache memory, and achieve the effect of reducing channel switching delay.

Inactive Publication Date: 2008-12-31
INT BUSINESS MASCH CORP
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  • Summary
  • Abstract
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Problems solved by technology

However, this solution has the following disadvantages: 1) If the user changes channels by directly inputting a channel number, or changes channels continuously and quickly, this solution will not work because the terminal does not have time to cache the channels to be watched, 2) Due to the limitation of the number of tuners in the terminal and / or the limitation of storage space, it is unrealistic to simultaneously cache all channels in the terminal

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

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Embodiment Construction

[0029] 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.

[0030] 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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Abstract

The invention proposes a novel method and device for improving user experience during channel switching in a digital video broadcast system. The present invention caches all channels in a caching server nearby the video display terminal, through a caching mechanism based on server, so that all start part of current GOP of any channel can be taken out from the caching server, thereby decreasing the channel switch delay to a great extent and improving the user experience.

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): H04N7/24H04N7/26H04N7/173
CPCH04N7/17354H04N21/2221H04N21/23106H04N21/4384
Inventor 袁昱杨雨东林国辉林咏华
Owner INT BUSINESS MASCH CORP
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