Method for Checking Authorization of Playback of Digital TV Recording Program
A digital TV and program technology, which is applied in the field of set-top box program playback, can solve the problems of inability to judge the authorization status of program sources and inability to accurately find program sources, etc.
Active Publication Date: 2018-07-31
SICHUAN CHANGHONG ELECTRIC CO LTD
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Problems solved by technology
At present, the recorded program is usually the audio and video data of the specified PID after recording and descrambling. It is impossible to accurately find the program source according to the recorded program, and it is impossible to judge the authorization status of the program source at the current time.
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[0023] In this example, the system first needs to record the program. The specific program recording process is as follows: figure 1 Shown:
[0024] When starting to record a program, first, obtain the corresponding video PID / audio PID / PMT PID / service id and the corresponding frequency point according to the program, and obtain the ts id / original network id according to the frequency point.
[0025] Secondly, the system creates a parameter information file file0, and the system saves video PID / audio PID / PMT PID / service id / ts id / original network id into file0, and the file is saved in the same path where the corresponding recording generated file is stored. At the same time, an association is formed between file0 and the recording generated file.
[0026] After the program is recorded, when the program starts to be played back, the system needs to judge the authorization status of the source program corresponding to the recorded file being played back at the current time. The ...
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The invention relates to playback of set top box programs, and provides a method for checking playback authorization of a program recorded by a digital television. The method comprises the following steps that: firstly, a system acquires recorded program information and corresponding frequency point information thereof, and saves the recorded program information and the corresponding frequency point information in a parameter information file, wherein the parameter information file and a recording generated file are saved in the same recording folder, and the parameter information file is correlated with the recording generated file; secondly, after reception of a playback command, the system detects whether the parameter information file correlated with the recording generated file being played back exists or not, and ends playback if the parameter information file does not exist; if the parameter information file exists, the system reads the parameter information file in order to obtain the program information corresponding to the recording generated file and the corresponding frequency point information of the program information, performs a frequency-locking operation according to the frequency point information, and ends the playback if the frequency locking fails; and if the frequency locking succeeds, the system judges an authorization state according to the program information and the corresponding frequency point information thereof, performs program playback if the authorization state is a clear stream state or authorization is already implemented, and otherwise, ends the playback. The method is suitable for checking the playback authorization of a set top box.
Description
technical field [0001] The invention relates to a method for replaying programs in a set-top box, in particular to a method for checking replay authorization. Background technique [0002] With the promotion of digital TV content copyright protection, operators' demand for copyright protection is also increasing. Checking the current authorization status of program sources during PVR playback is one of the new requirements. At present, the recorded program is usually the audio and video data of the specified PID after recording and descrambling. It is impossible to accurately find the program source according to the recorded program, and it is impossible to judge the authorization status of the program source at the current time. The invention provides a simple method for checking the current authorization status of the program source before realizing playing back the program without affecting the original function. Contents of the invention [0003] The technical problem...
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IPC IPC(8): H04N21/472H04N21/4627
CPCH04N21/4627H04N21/47217
Inventor 魏建军
Owner SICHUAN CHANGHONG ELECTRIC CO LTD