Method for implementing television channel switch and multimedia broadcast receiving terminal

A channel switching and receiving terminal technology, applied to color TV parts, TV system parts, TVs, etc., can solve the problems of channel switching time delay, partial data decoding failure, mosaic, etc., and achieve the goal of reducing switching delay Effect

Inactive Publication Date: 2009-05-06
INNOFIDEI TECHNOLOGIES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The restart of the entire playback process will inevitably cause a time delay between switching channels, so that the user needs a delay for a period of time to see the program of the target channel after the channel switching operation, and the human eye can clearly feel the delay during this period of time.
[0008] At the same time, in the process of multimedia broadcasting, data is transmitted every second. If the moment when the user switches the channel happens to be the moment when the data transmission of this second is completed, it will take nearly one second to receive the newly switched channel data. increases the time delay between switching channels
In addition, during the switching process, the data of the current channel stops receiving, which may cause partial decoding failure of the data of the current frame, and the decoding of the new channel data has not yet been completed, which will cause serious mosaic phenomenon and affect the user experience

Method used

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  • Method for implementing television channel switch and multimedia broadcast receiving terminal
  • Method for implementing television channel switch and multimedia broadcast receiving terminal
  • Method for implementing television channel switch and multimedia broadcast receiving terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] In this embodiment, the information source processing part is completed by a set of devices. In the data processing of the current channel and the designated channel, only data reception, channel decoding and buffering are completed in parallel, and other information source processing parts are for the current channel or designated channel. Channels are performed individually.

[0078] image 3 It is a flowchart of an implementation method for implementing TV channel switching in Embodiment 1 of the present invention. like image 3 As shown, the method includes:

[0079] Step 301, determining that channel n is the data source of the current playing channel;

[0080] Step 301', determining channel n-1 as the data source of the first designated channel;

[0081] Step 301", determining channel n+1 as the data source of the second designated channel.

[0082] The specific operations in steps 301' and 301" may be exactly the same as those in step 301.

[0083] Step 302...

Embodiment 2

[0099] In this embodiment, in the data processing of the current channel and the specified channel, all processes of data transceiving, channel decoding, buffering and source decoding are completed in parallel.

[0100] Figure 5 It is a flowchart of an implementation method for implementing TV channel switching in Embodiment 2 of the present invention. like Figure 5 As shown, the method includes:

[0101] Step 501, determining that channel n is the data source of the current playing channel;

[0102] Step 501', determining channel n-1 as the data source of the first designated channel;

[0103] Step 501", determining channel n+1 as the data source of the second designated channel.

[0104] The specific operations in steps 501' and 501" may be exactly the same as those in step 501.

[0105] Step 502, performing channel decoding and buffering the data of channel n received per second;

[0106] Step 502', performing channel decoding and buffering the data of channel n-1 r...

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Abstract

The invention discloses a method for realizing television channel switch, including: determining a channel where the current broadcast channel data source locates and a channel where the preset appointed channel data source locates, wherein, the appointed channel has one or a plurality of channels; performing receiving, channel decoding and caching to the data of the channel where the current broadcast channel data source locates and the data of the channel where the preset appointed channel data source locates, and performing data demultiplexing, audio and video decoding and broadcasting to the data cached in the channel where the current broadcast channel data source locates; when the broadcast channel is switched to any one appointed channel, directly processing and broadcasting the data cached in the channel where the appointed channel data source locates. The present invention also discloses a multimedia broadcast receiving terminal. Application of the present invention can greatly reduce the switching delay.

Description

technical field [0001] The invention relates to multimedia broadcast receiving terminal technology, in particular to a method for realizing TV channel switching and a multimedia broadcast receiving terminal. Background technique [0002] The receiving end of the mobile multimedia broadcasting system is logically composed of radio frequency front end, channel decoding, demultiplexing, audio and video decoding, and audio and video output. Using the receiving end, you can receive programs of any channel and play them. The receiving and playing process of specific channels includes: [0003] Step 11, determine the channel n where the data source of the channel to be played is located; [0004] Step 12, performing channel decoding on the data of channel n received per second, and buffering the decoded data; [0005] Step 13, performing data demultiplexing on the cached data; [0006] In steps 14-15, audio and video decoding and playing are performed on the demultiplexed data....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/50H04N5/44
Inventor 张辉王西强曹晋宇李凤庆
Owner INNOFIDEI TECHNOLOGIES INC
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