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Digital television receiver and methods for searching and switching programs thereof

A TV receiver and program switching technology, applied in electrical components, image communication, selective content distribution, etc., can solve the problem of unsatisfactory channel switching speed and achieve the effect of improving channel switching speed

Active Publication Date: 2013-06-26
SHENZHEN SKYWORTH DIGITAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0010] It can be seen that the existence of the above-mentioned two shortcomings of the existing scheme makes the speed of channel changing operation not very ideal

Method used

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  • Digital television receiver and methods for searching and switching programs thereof
  • Digital television receiver and methods for searching and switching programs thereof

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Embodiment Construction

[0042] The present invention utilizes the program information that has been stored during the program search, avoids the time spent on receiving the program information table in real time when the program is switched, and realizes concurrent processing of the program information table by using a multi-task mechanism, and performs the PAT table through the background monitoring task. Real-time detection with the PMT table to prevent the problem that the program cannot be played due to the change of the front-end system, so as to optimize the channel change design mechanism and improve the user's channel change operation speed.

[0043] Such as figure 1Shown, the program search process of the present invention is as follows:

[0044] Step S101: After the digital TV receiver is powered on, a program information database is created. The program information database is used to store PAT table, PMT table, audio PID, video PID and PCR PID.

[0045] Step S102: Start program search, r...

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PUM

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Abstract

The invention discloses a digital television receiver and methods for searching and switching programs thereof, wherein the method for switching programs comprises the following steps: when the digital television receiver is electrically started, reading a program information database into an internal memory, and establishing three concurrent processing tasks: a CA kernel service task, a switching program treating task and a background monitoring task; when a program switching request is detected, reading a business mark of the program selected by a user; finding contents corresponding to thebusiness mark of the program in the program information database by the CA kernel service task and the switching program treating task and executing the task treatment respectively; acquiring the latest PAT table and PMT table of the program corresponding to the program switching request by the background monitoring task and updating the program information database, and when detecting the changeof the PMT table of the program, informing the CA kernel service task and the switching program treating task for processing again according to the analyzed contents of the latest PAT table and PMT table. The digital television receiver and the methods can take efficiency advantages of multi-task concurrent execution and improve the speed of switching programs.

Description

technical field [0001] The present invention relates to a channel changing processing method of a digital TV, in particular to a method for increasing the speed of channel changing by saving necessary information during the channel search process, a corresponding program channel search method, and a method using the channel search method and the channel change method Digital TV receiver. Background technique [0002] In digital TV, all video, audio, text, pictures, etc. are digitized and converted into data, and packaged according to the MPEG-2 standard to form fixed-length transmission packets, and then these data packets are multiplexed to form Transport Stream (Transport Stream, TS). Usually, one channel corresponds to one TS stream, and the TS stream of one channel consists of multiple programs and services. [0003] In addition, in MPEG-2, program specific information (Program Specific Information, PSI) is specially defined, and its function is to automatically set an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/434H04N21/435
Inventor 田超
Owner SHENZHEN SKYWORTH DIGITAL TECH CO LTD
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