Method for switching television channels and system and device thereof

A TV channel, audio and video technology, applied in the field of Internet TV, can solve the problem that the channel switching time cannot be shortened obviously, and achieve the effect of fast channel switching

Inactive Publication Date: 2010-12-22
SHENZHEN JIUZHOU ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a method for switching TV channels, aiming to solve the problem that the channel switching method provided by the prior art cannot obviously shorten the channel switching time

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  • Method for switching television channels and system and device thereof
  • Method for switching television channels and system and device thereof
  • Method for switching television channels and system and device thereof

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Embodiment Construction

[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0036] In the embodiment of the present invention, the audio and video source data is encoded into two data streams in real time through the media server, wherein the first data stream occupies a small amount of bandwidth, and when the network TV terminal receives a channel change instruction, the network TV terminal buffers the A small amount of data can decode and output images to achieve the purpose of quickly changing channels.

[0037] figure 1 It is a structural block diagram of a system for switching television channels provided by an embodiment of the present invention. For ease of descrip...

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Abstract

The invention is applied to the technical field of network television, providing a method for switching television channels and a system and a device thereof. The method comprises the following steps: performing video data decomposition of audio / video source data to generate a first data flow and a second data flow, wherein the first data flow is low-quality image data and audio data extracted from the audio / video source data, and the second data flow is video data after the first data flow is removed; and respectively sending the first and the second data flows to the terminal of the network television through a first and a second network passages. In the invention, the audio / video source data is decoded into two data flows in real time, wherein the first data flow occupies little bandwidth; when the order for changing the channels is received at the terminal of the network television, the terminal of the network television is capable of caching little data to decode and output the images so as to quickly change channels.

Description

technical field [0001] The invention belongs to the technical field of network television, and in particular relates to a method, system and device for switching television channels. Background technique [0002] In an IPTV system, the speed of channel switching is directly related to the effect of user experience. For TV users, the channel-changing time of more than 2 seconds will be unbearable, and it is better to control the channel-changing time within 1 second. In addition, due to the instability of the network bandwidth, mosaic phenomenon often occurs on the network TV terminal. [0003] At present, the methods for solving the channel change time of the IPTV system include: optimizing the multicast technology, and quickly responding to the user's channel change request. These methods are mainly to increase the channel switching speed. Although it can reduce the delay of data transmission and not damage the image quality, when the IPTV terminal is decoding, it needs t...

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Application Information

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IPC IPC(8): H04N7/173H04N7/24H04L29/06
Inventor 伍军钢张拥军
Owner SHENZHEN JIUZHOU ELECTRIC
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