WO2017012429A1 - 数字电视节目参数的获取方法及系统 - Google Patents
数字电视节目参数的获取方法及系统 Download PDFInfo
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- WO2017012429A1 WO2017012429A1 PCT/CN2016/084696 CN2016084696W WO2017012429A1 WO 2017012429 A1 WO2017012429 A1 WO 2017012429A1 CN 2016084696 W CN2016084696 W CN 2016084696W WO 2017012429 A1 WO2017012429 A1 WO 2017012429A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4345—Extraction or processing of SI, e.g. extracting service information from an MPEG stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
- H04N21/4351—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream involving reassembling additional data, e.g. rebuilding an executable program from recovered modules
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
- H04N21/4383—Accessing a communication channel
Definitions
- the present invention relates to the field of digital television technologies, and in particular, to a method and system for acquiring digital television program parameters.
- the program search and program playback of the existing digital television system based on the DVB (Digital Video Broadcasting) standard must rely on the PAT (Program Associate Table) in the PSI (Program Specific Information). And a PMT (Program Mapping Table) to obtain program parameters of the corresponding program, such as an audio PID (Packet Identifier), a video PID, a program reference clock PID, etc., but in such a manner, the program parameters are acquired.
- There are many execution steps which increases the time overhead for obtaining program parameters, and also increases the subsequent maintenance cost for the digital television system, which is not conducive to improving the market competitiveness of the product.
- the main object of the present invention is to provide a method and system for acquiring digital television program parameters, aiming at solving the technical problem of how to improve the acquisition efficiency of program parameters while reducing the maintenance cost of the digital television system.
- the present invention provides a method for acquiring digital television program parameters, and the method for acquiring the digital television program parameters includes:
- the terminal receives a play request or a search request of the television program
- S5 Set the next frequency point to the current frequency point, and repeatedly execute S2-S4 until the search of all the frequency points is completed, where the service description table SDT loading the current frequency point includes:
- the first program parameter of the corresponding program includes: filtering the SDT according to the preset mark of the preset descriptor to obtain the preset descriptor; and parsing the preset descriptor according to the data encapsulation format to obtain The current frequency point corresponds to the first program parameter of the program.
- the method for acquiring the digital television program parameter is applied to the program play, and the service description table SDT for loading the current frequency point includes:
- the terminal sends, according to the play request, the searched second program parameter saved in the preset program information database to the audio and video decoder for playing the program, where the second program parameter includes at least the audio package.
- the method After parsing the SDT to obtain the first program parameter of the program corresponding to the current frequency point, the method includes:
- the first program parameter is sent to the audio and video decoder for playing the program.
- the method before the terminal receives the play request or the search request of the television program, the method includes:
- the front end generates a corresponding data segment of the preset descriptor of the SDT table
- the third program parameter includes at least an audio package identifier, a video package identifier, and a program reference clock packet identifier;
- the SDT table after the data encapsulation is completed is packaged to generate transport stream data and sent to the terminal.
- the method before the terminal receives the play request or the search request of the television program, the method includes:
- the front end generates a corresponding data segment of the preset descriptor of the SDT table
- the third program parameter includes at least an audio package identifier, a video package identifier, and a program reference clock packet identifier;
- the SDT table after the data encapsulation is completed is packaged to generate transport stream data and sent to the terminal.
- the present invention further provides a method for acquiring digital television program parameters, and the method for acquiring the digital television program parameters includes:
- the terminal receives a play request or a search request of the television program
- the service description table SDT for loading the current frequency point includes:
- the terminal sends, according to the play request, the searched second program parameter saved in the preset program information database to the audio and video decoder for playing the program, where the second program parameter includes at least the audio package.
- the method After parsing the SDT to obtain the first program parameter of the program corresponding to the current frequency point, the method includes:
- the first program parameter is sent to the audio and video decoder for playing the program.
- the parsing the SDT to obtain the first program parameter of the current frequency corresponding program includes:
- the terminal saves the first program parameter to a preset program information database.
- the method before the terminal receives the play request or the search request of the television program, the method includes:
- the front end generates a corresponding data segment of the preset descriptor of the SDT table
- the third program parameter includes at least an audio package identifier, a video package identifier, and a program reference clock packet identifier;
- the SDT table after the data encapsulation is completed is packaged to generate transport stream data and sent to the terminal.
- the service description table SDT loading the current frequency point includes:
- the terminal locks the current frequency point to obtain frequency point information
- the parsing the SDT to obtain the first program parameter of the program corresponding to the current frequency point comprises:
- the present invention further provides a system for acquiring a digital television program parameter, including a terminal, where the terminal includes:
- a request receiving module configured to receive a play request or a search request of a television program
- a loading module configured to load a service description table SDT of the current frequency point
- a parsing module configured to parse the SDT, to obtain a first program parameter of a program corresponding to a current frequency point, to perform a corresponding program play or a program search operation according to the first program parameter, where the first program parameter includes at least an audio package Identifier, video packet identifier, program reference clock packet identifier.
- the present invention sets the audio package identifier, the video package identifier, and the program reference clock packet identifier of the program into the service description table SDT, so that the program search and playback of the digital television is no longer dependent on the program association table PAT and the program map.
- Table PMT which improves the efficiency of obtaining program parameters, enhances the user experience, and reduces the dimension Protect the cost.
- the development cycle of digital TV terminal software has also been shortened, thereby improving the market competitiveness of products.
- FIG. 1 is a schematic flow chart of a first embodiment of a method for acquiring digital television program parameters according to the present invention
- FIG. 2 is a schematic flow chart of a second embodiment of a method for acquiring digital television program parameters according to the present invention
- FIG. 3 is a schematic flow chart of a third embodiment of a method for acquiring digital television program parameters according to the present invention.
- FIG. 4 is a schematic flow chart of a fourth embodiment of a method for acquiring digital television program parameters according to the present invention.
- FIG. 5 is a schematic diagram showing the refinement process of steps S2 and S3 in FIG. 1;
- FIG. 6 is a schematic diagram of functional modules of a first embodiment of a digital television program parameter acquisition system according to the present invention.
- FIG. 7 is a schematic diagram of functional modules of a second embodiment of a digital television program parameter acquisition system according to the present invention.
- FIG. 1 is a schematic flowchart diagram of a first embodiment of a method for acquiring digital television program parameters according to the present invention.
- the method for obtaining the digital television program parameters includes:
- Step S1 The terminal receives a play request or a search request of the television program
- Step S2 loading a service description table SDT of the current frequency point
- Step S3 Parsing the SDT to obtain a first program parameter of a program corresponding to the current frequency point, to perform a corresponding program play or a program search operation according to the first program parameter, where the first program parameter includes at least an audio package identifier , video packet identifier, program reference clock packet identifier.
- the terminal specifically refers to a television program receiving end, such as a digital television set top box, a digital television integrated machine, a handheld television terminal, and the like. It should be noted that the terminal can receive the play request of the television program or the search request of the television program.
- program information corresponding to different channels is generally transmitted through a plurality of different frequency points.
- the terminal When receiving the play request or the search request of the television program, the terminal loads the service description table SDT of the current frequency point, where the SDT table includes the program parameters of the current frequency point, such as the audio package identifier of the program, the video package identifier, The program references the clock packet identifier as well as the program type, program name, and the like.
- the terminal can obtain the above-mentioned program parameters of the program corresponding to the current frequency point by parsing the SDT table, so that the corresponding program play or program search operation can be performed according to the first program parameter.
- the first program parameter is used in the embodiment to distinguish, that is, the first program parameter is the same as the parameter type included in the program parameter.
- the program can be played by obtaining the above program parameters.
- the acquisition of the program parameters of the existing digital television based on the DVB standard must be dependent on the program association table PAT and the program map PMT in the program specific information PSI, that is, when performing program broadcast or program search, it is necessary to first load through the PAT table.
- the program map table PMT then obtains an audio pack identifier, a video pack identifier, and a program reference clock pack identifier by parsing the PMT table.
- the program parameters of the current frequency point such as the audio packet identifier of the program, the video packet identifier, the program reference clock packet identifier, etc.
- the program parameters of the current frequency point can be directly obtained, so that the program search and playback of the digital television no longer depends on the program association table PAT and the program map table PMT, thereby improving the acquisition efficiency of the program parameters, enhancing the user experience, and also reducing Maintenance costs.
- the development cycle of digital TV terminal software has also been shortened, which has also improved the market competitiveness of products.
- FIG. 2 is a schematic flowchart diagram of a second embodiment of a method for acquiring digital television program parameters according to the present invention.
- step S2 includes:
- Step S110 The terminal sends, according to the play request, the searched second program parameter saved in the preset program information database to the audio and video decoder for playing the program, where the second program parameter is at least Including an audio packet identifier, a video packet identifier, and a program reference clock packet identifier;
- step S3 it includes:
- Step S120 The terminal respectively determines, in the first program parameter, an audio packet identifier, a video packet identifier, a program reference clock packet identifier, and an audio packet identifier and a video packet identifier in the second program parameter. Whether the program reference clock packet identifiers all correspond to the same;
- Step S130 If no, the first program parameter is sent to the audio and video decoder for playing the program; if so, no processing is performed.
- the terminal when the terminal receives the program play request, the terminal will obtain, according to the program play request, for example, according to the program name, the stored program parameters that have been searched and searched before are saved from the preset program information database. That is, the second program parameter, and the second program parameter acquired from the program information base is sent to the audio and video decoder, and the audio and video decoder according to the received second program parameter, such as an audio package identifier, a video package identifier, The program reference clock packet identifier, after decoding the audio and video packets in the transport stream, can play the program of the program name.
- the second program parameter, and the second program parameter acquired from the program information base is sent to the audio and video decoder, and the audio and video decoder according to the received second program parameter, such as an audio package identifier, a video package identifier,
- the program reference clock packet identifier after decoding the audio and video packets in the transport stream, can play the program of the program name.
- a program parameter is sent to the audio and video decoder, so that the audio and video decoder continues to play the current program by decoding the audio and video packets in the transport stream corresponding to the first program parameter.
- the program parameter currently obtained by loading and parsing the SDT table is named as the first program parameter
- the program parameter obtained from the program information database is named as the second program parameter
- the first program parameter in the embodiment is the same as the parameter type corresponding to the second program parameter, and includes an audio package identifier, a video package identifier, and a program reference clock packet identifier.
- FIG. 3 is a schematic flowchart diagram of a third embodiment of a method for acquiring digital television program parameters according to the present invention.
- the embodiment is applied to the program search of the digital television, and after the step S3, the method includes:
- Step S4 The terminal saves the first program parameter to a preset program information database
- step S5 the next frequency point is set as the current frequency point, and S2-S4 is repeatedly executed until the search of all frequency points is completed.
- the terminal when the terminal receives the program search request, the terminal automatically loads the SDT table of the current frequency point and parses it, thereby obtaining the program parameters of the program corresponding to the current frequency point, wherein the program parameters in this embodiment include audio. Packet identifier, video packet identifier, program reference clock packet identifier, and program type, program name, and the like.
- the above program parameters are saved in the program information database for program play. For example, the user selects a program type and selects a program name under the type.
- the terminal will correspondingly obtain a package identifier, a video package identifier, and a program reference clock packet corresponding to the program name from the program information database. The identifier is sent to the audio and video decoder for decoding the audio and video package and then the program is played.
- the terminal After searching for the current frequency point, the terminal sets the next frequency point of the current frequency point as the current frequency point, and repeats steps S2-S4 until the search of all frequency points is completed.
- FIG. 4 is a schematic flowchart diagram of a fourth embodiment of a method for acquiring digital television program parameters according to the present invention.
- step S1 the method includes:
- Step S210 The front end generates a corresponding data segment of the preset descriptor of the SDT table.
- Step S220 Acquire a third program parameter corresponding to each program, where the third program parameter includes at least an audio package identifier, a video package identifier, and a program reference clock packet identifier.
- Step S230 inserting, according to the predefined data encapsulation format, the acquired third program parameter corresponding to each program in the corresponding data segment corresponding to the preset descriptor of the SDT table, and performing data encapsulation;
- Step S240 packetizing the SDT table after data encapsulation is completed to generate transport stream data, and transmitting the data to the terminal.
- the front end specifically refers to a digital television program editing and transmitting end of the digital television operator.
- Undefined private descriptors are reserved in the general SDT table so that operators can customize according to different business needs.
- the front end can define a private custom descriptor of the program parameter information in the SDT table for storing program parameter information corresponding to each program.
- the program parameter used for performing SDT editing at the front end is named as the third program parameter, and the third program parameter in the embodiment is corresponding to the first program parameter and the second program parameter.
- the front end inserts the program parameter information corresponding to each program into the preset descriptor of the corresponding SDT table according to the data encapsulation format as described in Table 1, and performs the packet processing on the SDT table according to the MPEG-2 standard to generate the transport stream data. And sent to the terminal.
- descriptor_tag Describes the subtag, 8 bytes, according to the specified value range (for example, 0x80 to 0xFE).
- descriptor_length describes the sub-length, 8 bytes.
- PCR_PID PCR PID, used for playback, 13 bytes.
- reserved bits reserved bits, 3 bytes or 4 bytes.
- stream_type program type, 8 bytes.
- elementary_PID related program elements contained in the transport stream, such as audio PID or video PID, etc., 13 bytes.
- ES_info_length This field indicates the number of bytes following the description of the relevant program element 12 bytes. It should be noted that the above embodiments are only used for illustration, and the definitions of the descriptors in Table 1 above are specifically set according to actual needs.
- the corresponding data segment (section) of the preset descriptor of the SDT table is generated according to the length of the digital video broadcast-service information (DVB-SI) standard and the preset descriptor, and then Obtaining program parameter information corresponding to each program from the editing database of the front end, and inserting the acquired program parameter information corresponding to each program into the corresponding descriptor of the corresponding SDT table according to the corresponding data encapsulation format of Table 1 above.
- the data segment is encapsulated.
- the data-encapsulated SDT table is packaged to generate transport stream data and sent to the terminal, so that the terminal can directly obtain the program parameters by loading and parsing the SDT table, thereby enabling the program search of the digital television. Playback no longer relies on the program association table PAT and the program map PMT, thereby improving the acquisition efficiency of program parameters, enhancing the user experience, and also reducing maintenance costs.
- FIG. 5 is a schematic diagram of the refinement process of steps S2 and S3 in FIG.
- the foregoing step S2 includes:
- Step S21 The terminal locks the current frequency point to obtain frequency point information.
- Step S22 filtering the frequency point information according to the preset packet identifier and the table identifier of the SDT to obtain the SDT;
- the above step S3 includes:
- Step S31 Filter the SDT according to the preset mark of the preset descriptor to obtain the preset descriptor.
- Step S32 Parse the preset descriptor according to the data encapsulation format to obtain the first program parameter of the current frequency corresponding program.
- the terminal When the terminal acquires the data information in the SDT table from the transport stream data, the terminal needs to perform the frequency lock processing, so as to obtain the frequency point information corresponding to the current frequency point from the frequency points of the different channels in the transport stream data, the frequency point.
- the information includes all the data information including the SDT table. Therefore, the frequency point information needs to be filtered according to the packet identifier and the table identifier of the SDT, thereby obtaining the packet identifier and table identifier SDT table with the SDT.
- the SDT is filtered to obtain the preset descriptor; and the preset descriptor is parsed according to the data encapsulation format of the preset descriptor, and the current frequency is obtained.
- the point corresponds to the first program parameter of the program.
- the program parameters of the current frequency point can be directly obtained by loading and parsing the SDT table, so that the program search and playback of the digital television is no longer dependent on the program association table PAT and the program map table PMT, thereby improving the program.
- the acquisition efficiency of program parameters enhances the user experience, and also reduces maintenance costs and improves the market competitiveness of products.
- FIG. 6 is a schematic diagram of functional modules of a first embodiment of a digital television program parameter acquisition system according to the present invention.
- the system for acquiring digital television program parameters includes the terminal 10; the terminal 10 includes:
- the request receiving module 110 is configured to receive a play request or a search request of the television program
- a loading module 120 configured to load a service description table SDT of a current frequency point
- the parsing module 130 is configured to parse the SDT to obtain a first program parameter of a program corresponding to a current frequency point, to perform a corresponding program play or a program search operation according to the first program parameter, where the first program parameter includes at least audio Packet identifier, video packet identifier, program reference clock packet identifier.
- the terminal 10 specifically refers to a television program receiving end, such as a digital TV set top box, a digital television integrated machine, a handheld television terminal, etc., and the terminal 10 has both a television program playing function and a search function.
- a television program receiving end such as a digital TV set top box, a digital television integrated machine, a handheld television terminal, etc.
- the terminal 10 has both a television program playing function and a search function.
- the loading module 120 loads the service description table SDT of the current frequency point, where the SDT table includes the program parameters of the current frequency point, such as the audio package identifier of the program. , video packet identifier, program reference clock packet identifier, and program type, program name, and the like.
- the parsing module 130 parses the SDT table to obtain the program parameters of the program corresponding to the current frequency point, so that the corresponding program play or program search operation can be performed according to the first program parameter.
- the first program parameter is used in the embodiment to distinguish, that is, the first program parameter is the same as the parameter type included in the program parameter.
- the program can be played by obtaining the above program parameters.
- the acquisition of the program parameters of the existing digital television based on the DVB standard must be dependent on the program association table PAT and the program map PMT in the program specific information PSI, that is, when performing program broadcast or program search, it is necessary to first load through the PAT table.
- the program map table PMT then obtains an audio pack identifier, a video pack identifier, and a program reference clock pack identifier by parsing the PMT table.
- the program parameters of the current frequency point such as the audio packet identifier of the program, the video packet identifier, the program reference clock packet identifier, etc.
- the program parameters of the current frequency point can be directly obtained, so that the program search and playback of the digital television no longer depends on the program association table PAT and the program map table PMT, thereby improving the acquisition efficiency of the program parameters, enhancing the user experience, and also reducing Maintenance costs.
- the development cycle of digital TV terminal software has also been shortened, which has also improved the market competitiveness of products.
- FIG. 7 is a schematic diagram of functional modules of a second embodiment of a digital television program parameter acquisition system according to the present invention.
- the present embodiment is applied to program play of a digital television, and the request receiving module 110 includes:
- a play request receiving unit 1101 configured to receive a play request of a television program
- the terminal 10 further includes:
- the program parameter first sending module 140 is configured to send, according to the play request, the searched second program parameter saved in the preset program information database to the audio and video decoder for playing the program, where
- the second program parameter includes at least an audio package identifier, a video package identifier, and a program reference clock packet identifier;
- the determining module 150 is configured to respectively determine an audio package identifier and a video package identifier in the first program parameter Whether the program reference clock packet identifier is identical to the audio packet identifier, the video packet identifier, and the program reference clock packet identifier in the second program parameter;
- a program parameter second sending module 160 configured to: when the audio package identifier, the video package identifier, the program reference clock packet identifier, and the audio package identifier, the video in the second program parameter, in the first program parameter When the packet identifier and the program reference clock packet identifier do not all correspond to the same, the first program parameter is transmitted to the audio and video decoder for playing the program.
- the program parameter first sending module 140 will obtain the saved previous program from the preset program information base according to the program play request, for example, according to the program name. Searching for the searched program parameters, that is, the second program parameters, and transmitting the second program parameters obtained from the program information base to the audio and video decoder, and the audio and video decoder according to the received second program parameters, for example
- the audio package identifier, the video packet identifier, and the program reference clock packet identifier can be used to play the program name of the program after decoding the audio and video packets in the transport stream.
- the determining, by the determining module 150, the audio package identifier, the video packet identifier, the program reference clock packet identifier, the audio package identifier, the video packet identifier, and the program reference in the second program parameter are respectively determined by the determining module 150. Whether the clock packet identifiers all correspond to the same; if yes, no processing is performed; and if not, that is, if at least one of the program parameters does not have a corresponding consistency, the first program parameter is sent to the sound through the program parameter second sending module 160. In the video decoder, the audio and video decoder continues to play the current program by decoding the audio and video packets in the transport stream corresponding to the first program parameter.
- the program parameter currently obtained by loading and parsing the SDT table is named as the first program parameter
- the program parameter obtained from the program information database is named as the second program parameter
- the first program parameter in the embodiment is the same as the parameter type corresponding to the second program parameter, and includes an audio package identifier, a video package identifier, and a program reference clock packet identifier.
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Abstract
公开了一种数字电视节目参数的获取方法,包括:终端接收电视节目的播放请求或搜索请求;加载当前频点的业务描述表SDT;解析所述SDT,得到当前频点对应节目的第一节目参数,以根据所述第一节目参数进行相应的节目播放或节目搜索操作,所述第一节目参数至少包括音频包标识符、视频包标识符、节目参考时钟包标识符。还公开了一种数字电视节目参数的获取系统。通过将节目的音频包标识符、视频包标识符、节目参考时钟包标识符设置到业务描述表SDT中,从而使得数字电视的节目搜索与播放不再依赖于节目关联表PAT以及节目映射表PMT,进而提高节目参数的获取效率,降低了维护成本,同时也提高了产品的市场竞争力。
Description
本发明涉及数字电视技术领域,尤其涉及数字电视节目参数的获取方法及系统。
现有基于DVB(Digital Video Broadcasting,数字视频广播)标准的数字电视系统的节目搜索与节目播放都必须依赖于PSI(Program Specific Information,节目特定信息)中的PAT(Program Associate Table,节目关联表)和PMT(Program Mapping Table,节目映射表),以获取相应节目的节目参数,比如音频PID(Packet Identifier,包标识符)、视频PID、节目参考时钟PID等,但此类方式的获取节目参数的执行步骤较多,从而增加了获取节目参数的时间开销,同时也增加了后续对于数字电视系统的维护成本,从而不利于提高产品的市场竞争力。
发明内容
本发明的主要目的在于提供一种数字电视节目参数的获取方法及系统,旨在解决如何提高节目参数的获取效率,同时降低数字电视系统的维护成本的技术问题。
为实现上述目的,本发明提供一种数字电视节目参数的获取方法,所述数字电视节目参数的获取方法包括:
S1、终端接收电视节目的播放请求或搜索请求;
S2、加载当前频点的业务描述表SDT;
S3、解析所述SDT,得到当前频点对应节目的第一节目参数,以根据所述第一节目参数进行相应的节目播放或节目搜索操作,所述第一节目参数至少包括音频包标识符、视频包标识符、节目参考时钟包标识符;
S4、将所述第一节目参数保存到预设节目信息数据库中;
S5、将下一频点设为当前频点,重复执行S2-S4,直至完成所有频点的搜索,其中,所述加载当前频点的业务描述表SDT包括:
锁住当前频点以获得频点信息;根据预设的所述SDT的包标识符与表标识符,过滤所述频点信息以得到所述SDT;所述解析所述SDT,得到当前频点对应节目的第一节目参数包括:根据所述预设描述子的预设标记,过滤所述SDT以得到所述预设描述子;根据所述数据封装格式,解析所述预设描述子,得到当前频点对应节目的所述第一节目参数。
优选地,所述数字电视节目参数的获取方法应用于节目播放,所述加载当前频点的业务描述表SDT之前包括:
所述终端根据所述播放请求,将预设节目信息库中保存的已搜索到的第二节目参数发送到音视频解码器中以用于进行节目播放,所述第二节目参数至少包括音频包标识符、视频包标识符、节目参考时钟包标识符;
所述解析所述SDT,得到当前频点对应节目的第一节目参数之后包括:
所述终端分别对应判断所述第一节目参数中的音频包标识符、视频包标识符、节目参考时钟包标识符与所述第二节目参数中的音频包标识符、视频包标识符、节目参考时钟包标识符是否全部对应相同;
若否,则将所述第一节目参数发送到所述音视频解码器中以用于进行所述节目播放。
优选地,所述终端接收电视节目的播放请求或搜索请求之前包括:
前端生成所述SDT表的预设描述子的对应数据段;
获取每一节目所对应的第三节目参数,所述第三节目参数至少包括音频包标识符、视频包标识符、节目参考时钟包标识符;
根据预定义的数据封装格式,将获取的每一节目所对应的所述第三节目参数插入对应所述SDT表的所述预设描述子的对应数据段中并进行数据封装;
将完成数据封装后的所述SDT表打包生成传输流数据并发送给所述终端。
优选地,所述终端接收电视节目的播放请求或搜索请求之前包括:
前端生成所述SDT表的预设描述子的对应数据段;
获取每一节目所对应的第三节目参数,所述第三节目参数至少包括音频包标识符、视频包标识符、节目参考时钟包标识符;
根据预定义的数据封装格式,将获取的每一节目所对应的所述第三节目参数插入对应所述SDT表的所述预设描述子的对应数据段中并进行数据封装;
将完成数据封装后的所述SDT表打包生成传输流数据并发送给所述终端。
为实现上述目的,本发明还提供的一种数字电视节目参数的获取方法,所述数字电视节目参数的获取方法包括:
S1、终端接收电视节目的播放请求或搜索请求;
S2、加载当前频点的业务描述表SDT;
S3、解析所述SDT,得到当前频点对应节目的第一节目参数,以根据所述第一节目参数进行相应的节目播放或节目搜索操作,所述第一节目参数至少包括音频包标识符、视频包标识符、节目参考时钟包标识符。
优选地,应用于节目播放,所述加载当前频点的业务描述表SDT之前包括:
所述终端根据所述播放请求,将预设节目信息库中保存的已搜索到的第二节目参数发送到音视频解码器中以用于进行节目播放,所述第二节目参数至少包括音频包标识符、视频包标识符、节目参考时钟包标识符;
所述解析所述SDT,得到当前频点对应节目的第一节目参数之后包括:
所述终端分别对应判断所述第一节目参数中的音频包标识符、视频包标识符、节目参考时钟包标识符与所述第二节目参数中的音频包标识符、视频包标识符、节目参考时钟包标识符是否全部对应相同;
若否,则将所述第一节目参数发送到所述音视频解码器中以用于进行所述节目播放。
优选地,应用于节目搜索,所述解析所述SDT,得到当前频点对应节目的第一节目参数之后包括:
S4、所述终端将所述第一节目参数保存到预设节目信息数据库中;
S5、将下一频点设为当前频点,重复执行S2-S4,直至完成所有频点的搜索。
优选地,所述终端接收电视节目的播放请求或搜索请求之前包括:
前端生成所述SDT表的预设描述子的对应数据段;
获取每一节目所对应的第三节目参数,所述第三节目参数至少包括音频包标识符、视频包标识符、节目参考时钟包标识符;
根据预定义的数据封装格式,将获取的每一节目所对应的所述第三节目参数插入对应所述SDT表的所述预设描述子的对应数据段中并进行数据封装;
将完成数据封装后的所述SDT表打包生成传输流数据并发送给所述终端。
优选地,所述加载当前频点的业务描述表SDT包括:
所述终端锁住当前频点以获得频点信息;
根据预设的所述SDT的包标识符与表标识符,过滤所述频点信息以得到所述SDT;
所述解析所述SDT,得到当前频点对应节目的第一节目参数包括:
根据所述预设描述子的预设标记,过滤所述SDT以得到所述预设描述子;
根据所述数据封装格式,解析所述预设描述子,得到当前频点对应节目的所述第一节目参数。
进一步地,为实现上述目的,本发明还提供一种数字电视节目参数的获取系统,包括终端,所述终端包括:
请求接收模块,用于接收电视节目的播放请求或搜索请求;
加载模块,用于加载当前频点的业务描述表SDT;
解析模块,用于解析所述SDT,得到当前频点对应节目的第一节目参数,以根据所述第一节目参数进行相应的节目播放或节目搜索操作,所述第一节目参数至少包括音频包标识符、视频包标识符、节目参考时钟包标识符。
本发明通过将节目的音频包标识符、视频包标识符、节目参考时钟包标识符设置到业务描述表SDT中,从而使得数字电视的节目搜索与播放不再依赖于节目关联表PAT以及节目映射表PMT,进而提高了节目参数的获取效率,增强了用户体验,并且也降低了维
护成本。同时进一步地,也缩短了对数字电视终端软件的研发周期,从而提高了产品的市场竞争力。
图1为本发明数字电视节目参数的获取方法第一实施例的流程示意图;
图2为本发明数字电视节目参数的获取方法第二实施例的流程示意图;
图3为本发明数字电视节目参数的获取方法第三实施例的流程示意图;
图4为本发明数字电视节目参数的获取方法第四实施例的流程示意图;
图5为图1中步骤S2与S3的细化流程示意图;
图6为本发明数字电视节目参数的获取系统第一实施例的功能模块示意图;
图7为本发明数字电视节目参数的获取系统第二实施例的功能模块示意图。
本发明目的的实现、功能特点及优点将结合实施例,参照附图做进一步说明。
应当理解,此处所描述的具体实施例仅用以解释本发明,并不用于限定本发明。
参照图1,图1为本发明数字电视节目参数的获取方法第一实施例的流程示意图。本实施例中,所述数字电视节目参数的获取方法包括:
步骤S1、终端接收电视节目的播放请求或搜索请求;
步骤S2、加载当前频点的业务描述表SDT;
步骤S3、解析所述SDT,得到当前频点对应节目的第一节目参数,以根据所述第一节目参数进行相应的节目播放或节目搜索操作,所述第一节目参数至少包括音频包标识符、视频包标识符、节目参考时钟包标识符。
本实施例中,终端具体指电视节目接收端,比如数字电视机顶盒、数字电视一体机、手持电视终端等。需要说明的是,终端既可以接收电视节目的播放请求,也可以接收电视节目的搜索请求。另外,基于MPEG-2节目传输标准,一般通过多个不同的频点用以传输不同频道所对应的节目信息。
当接收到电视节目的播放请求或搜索请求时,终端加载当前频点的业务描述表SDT,该SDT表中包括有当前频点的节目参数,比如节目的音频包标识符、视频包标识符、节目参考时钟包标识符以及节目类型、节目名称等。终端通过解析该SDT表即可得到当前频点对应节目的上述节目参数,从而可以根据第一节目参数进行相应的节目播放或节目搜索操作。需要说明的是,为便于与后续实施例中的节目参数进行区分,本实施例中采用第一节目参数进行区别,也即第一节目参数与节目参数所包括的参数类型相同。通过获得上述节目参数即可进行节目的播放。
现有的基于DVB标准的数字电视的节目参数的获取必须依赖于节目特定信息PSI中的节目关联表PAT以及节目映射表PMT,也即在进行节目播放或节目搜索时,需要先通过PAT表加载节目映射表PMT,然后通过解析PMT表获得音频包标识符、视频包标识符、节目参考时钟包标识符。
本实施例中,由于当前频点的节目参数,比如节目的音频包标识符、视频包标识符、节目参考时钟包标识符等设置于SDT表中,因此,只需通过加载并解析SDT表即可直接获得当前频点的节目参数,从而使得数字电视的节目搜索与播放不再依赖于节目关联表PAT以及节目映射表PMT,进而提高了节目参数的获取效率,增强了用户体验,并且也降低了维护成本。同时进一步地,也缩短了对数字电视终端软件的研发周期,从而也提高了产品的市场竞争力。
参照图2,图2为本发明数字电视节目参数的获取方法第二实施例的流程示意图。
本实施例应用于数字电视的节目播放,上述步骤S2之前包括:
步骤S110、所述终端根据所述播放请求,将预设节目信息库中保存的已搜索到的第二节目参数发送到音视频解码器中以用于进行节目播放,所述第二节目参数至少包括音频包标识符、视频包标识符、节目参考时钟包标识符;
步骤S3之后包括:
步骤S120、所述终端分别对应判断所述第一节目参数中的音频包标识符、视频包标识符、节目参考时钟包标识符与所述第二节目参数中的音频包标识符、视频包标识符、节目参考时钟包标识符是否全部对应相同;
步骤S130、若否,则将所述第一节目参数发送到所述音视频解码器中以用于进行所述节目播放;若是,则不做任何处理。
本实施例中,当终端接收到节目播放请求时,终端将根据该节目播放请求,例如根据节目名称,从预设节目信息库中获取保存的之前进行节目搜索并已搜索到的节目参数,也即第二节目参数,并将从节目信息库中获取的第二节目参数发送至音视频解码器,音视频解码器根据接收到的第二节目参数,比如音频包标识符、视频包标识符、节目参考时钟包标识符,对传输流中的音视频包进行解码后即可播放该节目名称的节目。
进一步地,由于节目播放过程中会出现某些异常,比如丢包、信号中断等,从而导致节目播放卡顿,或者音频与视频的解码未同步等,进而影响到用户的观看效果,因此,为避免出现上述异常状况,需要在节目播放的同时,同步获取当前最新的节目参数,也即通过加载当前频点的SDT表,并进行解析,从而获得当前节目的第一节目参数。同时,分别对应判断第一节目参数中的音频包标识符、视频包标识符、节目参考时钟包标识符与第二节目参数中的音频包标识符、视频包标识符、节目参考时钟包标识符是否全部对应相同;若是,则不做任何处理;而若不是,也即至少存在一个节目参数没有对应一致时,则将第
一节目参数发送至音视频解码器中,从而音视频解码器通过解码第一节目参数所对应的传输流中的音视频包,以继续进行当前节目的播放。
需要说明的是,为便于进行说明,将当前通过加载并解析SDT表后获得的节目参数命名为第一节目参数,而将从节目信息数据库中获取的节目参数命名为第二节目参数,但本实施例中的第一节目参数与第二节目参数所对应的参数类型相同,都包括音频包标识符、视频包标识符、节目参考时钟包标识符。
参照图3,图3为本发明数字电视节目参数的获取方法第三实施例的流程示意图。
本实施例应用于数字电视的节目搜索,上述步骤S3之后包括:
步骤S4、所述终端将所述第一节目参数保存到预设节目信息数据库中;
步骤S5、将下一频点设为当前频点,重复执行S2-S4,直至完成所有频点的搜索。
本实施例中,当终端接收到节目搜索请求时,终端将自动加载当前频点的SDT表,并解析,从而获得当前频点对应节目的节目参数,其中,本实施例中的节目参数包括音频包标识符、视频包标识符、节目参考时钟包标识符以及节目类型、节目名称等。同时,将上述节目参数保存到节目信息数据库中以用于进行节目播放。比如,用户通过选择节目类型,并选中该类型下的一个节目名称,此时,终端将对应将从节目信息数据库中获取与该节目名称对应的包标识符、视频包标识符、节目参考时钟包标识符,并发送至音视频解码器中进行音视频包的解码后进行节目播放。
当搜索完当前频点后,终端将当前频点的下一频点设为当前频点,并重复执行步骤S2-S4,直至完成所有频点的搜索。
本实施例中,在进行全网节目搜索时,也即进行多个频点的节目参数搜索时,由于只需通过加载并解析SDT表,即可获得当前频点下的节目参数,从而大大节省了全网节目的搜索时间,提高了用户使用体验。
参照图4,图4为本发明数字电视节目参数的获取方法第四实施例的流程示意图。
基于上述实施例,本实施例中,步骤S1之前包括:
步骤S210,前端生成所述SDT表的预设描述子的对应数据段;
步骤S220,获取每一节目所对应的第三节目参数,所述第三节目参数至少包括音频包标识符、视频包标识符、节目参考时钟包标识符;
步骤S230,根据预定义的数据封装格式,将获取的每一节目所对应的所述第三节目参数插入对应所述SDT表的所述预设描述子的对应数据段中并进行数据封装;
步骤S240,将完成数据封装后的所述SDT表打包生成传输流数据并发送给所述终端。
本实施例中,前端具体是指数字电视运营商的数字电视节目编辑发送端。一般SDT表中都预留有未定义的私有描述子以便于运营商可以根据不同业务需要进行自定义。因
此,前端可以在SDT表中定义节目参数信息的私有自定义描述子以用于保存每一节目所对应的节目参数信息。需要说明的是,为便于进行说明,将前端用于进行SDT编辑的节目参数命名为第三节目参数,本实施例中的第三节目参数与第一节目参数、第二节目参数所对应的参数类型相同,都包括音频包标识符、视频包标识符、节目参考时钟包标识符。
如表1所示的节目参数信息的私有自定义描述子示例。前端根据如表1所述的数据封装格式将每一节目所对应的节目参数信息插入对应SDT表的预设描述子中,同时按照MPEG-2标准将SDT表进行打包处理从而生成传输流数据,并发送给终端。
表1
其中,节目参数信息的私有自定义描述子(user_defined_descriptor)的具体数据格式及字段含义如下:
1)descriptor_tag:描述子标记,8个字节,按照规定取值范围(例如0x80到0xFE)。
2)descriptor_length:描述子长度,8个字节。
3)PCR_PID:PCR的PID,用于播放,13个字节。
4)reserved:保留位,3个字节或4个字节。
5)stream_type:节目类型,8个字节。
6)elementary_PID:传输流中包含有的相关节目元素,如音频PID或视频PID等,13个字节。
7)ES_info_length:该字段指示了跟随其后的描述相关节目元素的字节数12个字节。需要说明的是,上述实施例仅仅只是用于举例说明,上述表1中描述子的定义具体根据实际需要进行设置。
本实施例中,前端在编辑SDT表时,根据数字视频广播-服务信息(DVB-SI)标准及预设描述子的长度,生成SDT表的预设描述子的对应数据段(section),然后从前端的编辑数据库中获取每一节目所对应的节目参数信息,并按照如上表1对应数据封装格式,将获取的每一节目所对应的节目参数信息插入对应SDT表的预设描述子的对应数据段中并进行封装;最后再将完成数据封装后的SDT表打包生成传输流数据并发送给终端,从而终端通过加载并解析SDT表即可直接获得节目参数,从而使得数字电视的节目搜索与播放不再依赖于节目关联表PAT以及节目映射表PMT,进而提高了节目参数的获取效率,增强了用户体验,并且也降低了维护成本。
参照图5,图5为图1中步骤S2与S3的细化流程示意图。本实施例中,上述步骤S2包括:
步骤S21、所述终端锁住当前频点以获得频点信息;
步骤S22、根据预设的所述SDT的包标识符与表标识符,过滤所述频点信息以得到所述SDT;
上述步骤S3包括:
步骤S31、根据所述预设描述子的预设标记,过滤所述SDT以得到所述预设描述子;
步骤S32、根据所述数据封装格式,解析所述预设描述子,得到当前频点对应节目的所述第一节目参数。
终端在从传输流数据中获取SDT表内的数据信息时,需要先进行锁频处理,从而从传输流数据中不同频道的频点中,获得当前频点所对应的频点信息,该频点信息包括SDT表在内的所有数据信息,因此,需要根据SDT的包标识符与表标识符对该频点信息进行过滤处理,从而得到与SDT的包标识符与表标识符SDT表。
然后,再根据SDT表内预设描述子的预设标记,过滤所述SDT以得到所述预设描述子;并根据预设描述子的数据封装格式,解析该预设描述子,得到当前频点对应节目的所述第一节目参数。
本实施例中,只需通过加载并解析SDT表即可直接获得当前频点的节目参数,从而使得数字电视的节目搜索与播放不再依赖于节目关联表PAT以及节目映射表PMT,进而提高了节目参数的获取效率,增强了用户体验,并且也降低了维护成本,提高了产品的市场竞争力。
参照图6,图6为本发明数字电视节目参数的获取系统第一实施例的功能模块示意图。
本实施例中,数字电视节目参数的获取系统包括终端10;所述终端10包括:
请求接收模块110,用于接收电视节目的播放请求或搜索请求;
加载模块120,用于加载当前频点的业务描述表SDT;
解析模块130,用于解析所述SDT,得到当前频点对应节目的第一节目参数,以根据所述第一节目参数进行相应的节目播放或节目搜索操作,所述第一节目参数至少包括音频包标识符、视频包标识符、节目参考时钟包标识符。
本实施例中,终端10具体指电视节目接收端,比如数字电视机顶盒、数字电视一体机、手持电视终端等,且该终端10同时具有电视节目的播放功能以及搜索功能。
当请求接收模块110接收到电视节目的播放请求或搜索请求时,加载模块120加载当前频点的业务描述表SDT,该SDT表中包括有当前频点的节目参数,比如节目的音频包标识符、视频包标识符、节目参考时钟包标识符以及节目类型、节目名称等。通过解析模块130解析该SDT表即可得到当前频点对应节目的上述节目参数,从而可以根据第一节目参数进行相应的节目播放或节目搜索操作。需要说明的是,为便于与后续实施例中的节目参数进行区分,本实施例中采用第一节目参数进行区别,也即第一节目参数与节目参数所包括的参数类型相同。通过获得上述节目参数即可进行节目的播放。
现有的基于DVB标准的数字电视的节目参数的获取必须依赖于节目特定信息PSI中的节目关联表PAT以及节目映射表PMT,也即在进行节目播放或节目搜索时,需要先通过PAT表加载节目映射表PMT,然后通过解析PMT表获得音频包标识符、视频包标识符、节目参考时钟包标识符。
本实施例中,由于当前频点的节目参数,比如节目的音频包标识符、视频包标识符、节目参考时钟包标识符等设置于SDT表中,因此,只需通过加载并解析SDT表即可直接获得当前频点的节目参数,从而使得数字电视的节目搜索与播放不再依赖于节目关联表PAT以及节目映射表PMT,进而提高了节目参数的获取效率,增强了用户体验,并且也降低了维护成本。同时进一步地,也缩短了对数字电视终端软件的研发周期,从而也提高了产品的市场竞争力。
参照图7,图7为本发明数字电视节目参数的获取系统第二实施例的功能模块示意图。本实施例应用于数字电视的节目播放,所述请求接收模块110包括:
播放请求接收单元1101,用于接收电视节目的播放请求;
所述终端10还包括:
节目参数第一发送模块140,用于根据所述播放请求,将预设节目信息库中保存的已搜索到的第二节目参数发送到音视频解码器中以用于进行节目播放,所述第二节目参数至少包括音频包标识符、视频包标识符、节目参考时钟包标识符;
判断模块150,用于分别对应判断所述第一节目参数中的音频包标识符、视频包标识
符、节目参考时钟包标识符与所述第二节目参数中的音频包标识符、视频包标识符、节目参考时钟包标识符是否全部对应相同;
节目参数第二发送模块160,用于当所述第一节目参数中的音频包标识符、视频包标识符、节目参考时钟包标识符与所述第二节目参数中的音频包标识符、视频包标识符、节目参考时钟包标识符没有全部对应相同时,将所述第一节目参数发送到所述音视频解码器中以用于进行所述节目播放。
本实施例中,当播放请求接收单元1101接收到节目播放请求时,节目参数第一发送模块140将根据该节目播放请求,例如根据节目名称,从预设节目信息库中获取保存的之前进行节目搜索并已搜索到的节目参数,也即第二节目参数,并将从节目信息库中获取的第二节目参数发送至音视频解码器,音视频解码器根据接收到的第二节目参数,比如音频包标识符、视频包标识符、节目参考时钟包标识符,对传输流中的音视频包进行解码后即可播放该节目名称的节目。
进一步地,由于节目播放过程中会出现某些异常,比如丢包、信号中断等,从而导致节目播放卡顿,或者音频与视频的解码未同步等,进而影响到用户的观看效果,因此,为避免出现上述异常状况,需要在节目播放的同时,同步获取当前最新的节目参数,也即通过加载模块120加载当前频点的SDT表,并通过解析模块130进行解析,从而获得当前节目的第一节目参数。同时,分别通过判断模块150对应判断第一节目参数中的音频包标识符、视频包标识符、节目参考时钟包标识符与第二节目参数中的音频包标识符、视频包标识符、节目参考时钟包标识符是否全部对应相同;若是,则不做任何处理;而若不是,也即至少存在一个节目参数没有对应一致时,则通过节目参数第二发送模块160将第一节目参数发送至音视频解码器中,从而音视频解码器通过解码第一节目参数所对应的传输流中的音视频包,以继续进行当前节目的播放。
需要说明的是,为便于进行说明,将当前通过加载并解析SDT表后获得的节目参数命名为第一节目参数,而将从节目信息数据库中获取的节目参数命名为第二节目参数,但本实施例中的第一节目参数与第二节目参数所对应的参数类型相同,都包括音频包标识符、视频包标识符、节目参考时钟包标识符。
Claims (20)
- 一种数字电视节目参数的获取方法,其特征在于,所述数字电视节目参数的获取方法包括:S1、终端接收电视节目的播放请求或搜索请求;S2、加载当前频点的业务描述表SDT;S3、解析所述SDT,得到当前频点对应节目的第一节目参数,以根据所述第一节目参数进行相应的节目播放或节目搜索操作,所述第一节目参数至少包括音频包标识符、视频包标识符、节目参考时钟包标识符;S4、将所述第一节目参数保存到预设节目信息数据库中;S5、将下一频点设为当前频点,重复执行S2-S4,直至完成所有频点的搜索,其中,所述加载当前频点的业务描述表SDT包括:锁住当前频点以获得频点信息;根据预设的所述SDT的包标识符与表标识符,过滤所述频点信息以得到所述SDT;所述解析所述SDT,得到当前频点对应节目的第一节目参数包括:根据所述预设描述子的预设标记,过滤所述SDT以得到所述预设描述子;根据所述数据封装格式,解析所述预设描述子,得到当前频点对应节目的所述第一节目参数。
- 如权利要求1所述的数字电视节目参数的获取方法,应用于节目播放,其特征在于,所述加载当前频点的业务描述表SDT之前包括:所述终端根据所述播放请求,将预设节目信息库中保存的已搜索到的第二节目参数发送到音视频解码器中以用于进行节目播放,所述第二节目参数至少包括音频包标识符、视频包标识符、节目参考时钟包标识符;所述解析所述SDT,得到当前频点对应节目的第一节目参数之后包括:所述终端分别对应判断所述第一节目参数中的音频包标识符、视频包标识符、节目参考时钟包标识符与所述第二节目参数中的音频包标识符、视频包标识符、节目参考时钟包标识符是否全部对应相同;若否,则将所述第一节目参数发送到所述音视频解码器中以用于进行所述节目播放。
- 如权利要求1所述的数字电视节目参数的获取方法,其特征在于,所述终端接收电视节目的播放请求或搜索请求之前包括:前端生成所述SDT表的预设描述子的对应数据段;获取每一节目所对应的第三节目参数,所述第三节目参数至少包括音频包标识符、视 频包标识符、节目参考时钟包标识符;根据预定义的数据封装格式,将获取的每一节目所对应的所述第三节目参数插入对应所述SDT表的所述预设描述子的对应数据段中并进行数据封装;将完成数据封装后的所述SDT表打包生成传输流数据并发送给所述终端。
- 如权利要求2所述的数字电视节目参数的获取方法,其特征在于,所述终端接收电视节目的播放请求或搜索请求之前包括:前端生成所述SDT表的预设描述子的对应数据段;获取每一节目所对应的第三节目参数,所述第三节目参数至少包括音频包标识符、视频包标识符、节目参考时钟包标识符;根据预定义的数据封装格式,将获取的每一节目所对应的所述第三节目参数插入对应所述SDT表的所述预设描述子的对应数据段中并进行数据封装;将完成数据封装后的所述SDT表打包生成传输流数据并发送给所述终端。
- 一种数字电视节目参数的获取方法,其特征在于,所述数字电视节目参数的获取方法包括:S1、终端接收电视节目的播放请求或搜索请求;S2、加载当前频点的业务描述表SDT;S3、解析所述SDT,得到当前频点对应节目的第一节目参数,以根据所述第一节目参数进行相应的节目播放或节目搜索操作,所述第一节目参数至少包括音频包标识符、视频包标识符、节目参考时钟包标识符。
- 如权利要求5所述的数字电视节目参数的获取方法,应用于节目播放,其特征在于,所述加载当前频点的业务描述表SDT之前包括:所述终端根据所述播放请求,将预设节目信息库中保存的已搜索到的第二节目参数发送到音视频解码器中以用于进行节目播放,所述第二节目参数至少包括音频包标识符、视频包标识符、节目参考时钟包标识符;所述解析所述SDT,得到当前频点对应节目的第一节目参数之后包括:所述终端分别对应判断所述第一节目参数中的音频包标识符、视频包标识符、节目参考时钟包标识符与所述第二节目参数中的音频包标识符、视频包标识符、节目参考时钟包标识符是否全部对应相同;若否,则将所述第一节目参数发送到所述音视频解码器中以用于进行所述节目播放。
- 如权利要求5所述的数字电视节目参数的获取方法,应用于节目搜索,其特征在于,所述解析所述SDT,得到当前频点对应节目的第一节目参数之后包括:S4、所述终端将所述第一节目参数保存到预设节目信息数据库中;S5、将下一频点设为当前频点,重复执行S2-S4,直至完成所有频点的搜索。
- 如权利要求5所述的数字电视节目参数的获取方法,其特征在于,所述终端接收电视节目的播放请求或搜索请求之前包括:前端生成所述SDT表的预设描述子的对应数据段;获取每一节目所对应的第三节目参数,所述第三节目参数至少包括音频包标识符、视频包标识符、节目参考时钟包标识符;根据预定义的数据封装格式,将获取的每一节目所对应的所述第三节目参数插入对应所述SDT表的所述预设描述子的对应数据段中并进行数据封装;将完成数据封装后的所述SDT表打包生成传输流数据并发送给所述终端。
- 如权利要求6所述的数字电视节目参数的获取方法,其特征在于,所述终端接收电视节目的播放请求或搜索请求之前包括:前端生成所述SDT表的预设描述子的对应数据段;获取每一节目所对应的第三节目参数,所述第三节目参数至少包括音频包标识符、视频包标识符、节目参考时钟包标识符;根据预定义的数据封装格式,将获取的每一节目所对应的所述第三节目参数插入对应所述SDT表的所述预设描述子的对应数据段中并进行数据封装;将完成数据封装后的所述SDT表打包生成传输流数据并发送给所述终端。
- 如权利要求7所述的数字电视节目参数的获取方法,其特征在于,所述终端接收电视节目的播放请求或搜索请求之前包括:前端生成所述SDT表的预设描述子的对应数据段;获取每一节目所对应的第三节目参数,所述第三节目参数至少包括音频包标识符、视频包标识符、节目参考时钟包标识符;根据预定义的数据封装格式,将获取的每一节目所对应的所述第三节目参数插入对应所述SDT表的所述预设描述子的对应数据段中并进行数据封装;将完成数据封装后的所述SDT表打包生成传输流数据并发送给所述终端。
- 如权利要求8所述的数字电视节目参数的获取方法,其特征在于,所述加载当前 频点的业务描述表SDT包括:所述终端锁住当前频点以获得频点信息;根据预设的所述SDT的包标识符与表标识符,过滤所述频点信息以得到所述SDT;所述解析所述SDT,得到当前频点对应节目的第一节目参数包括:根据所述预设描述子的预设标记,过滤所述SDT以得到所述预设描述子;根据所述数据封装格式,解析所述预设描述子,得到当前频点对应节目的所述第一节目参数。
- 如权利要求9所述的数字电视节目参数的获取方法,其特征在于,所述加载当前频点的业务描述表SDT包括:所述终端锁住当前频点以获得频点信息;根据预设的所述SDT的包标识符与表标识符,过滤所述频点信息以得到所述SDT;所述解析所述SDT,得到当前频点对应节目的第一节目参数包括:根据所述预设描述子的预设标记,过滤所述SDT以得到所述预设描述子;根据所述数据封装格式,解析所述预设描述子,得到当前频点对应节目的所述第一节目参数。
- 一种数字电视节目参数的获取系统,包括终端,其特征在于,所述终端包括:请求接收模块,用于接收电视节目的播放请求或搜索请求;加载模块,用于加载当前频点的业务描述表SDT;解析模块,用于解析所述SDT,得到当前频点对应节目的第一节目参数,以根据所述第一节目参数进行相应的节目播放或节目搜索操作,所述第一节目参数至少包括音频包标识符、视频包标识符、节目参考时钟包标识符。
- 如权利要求13所述的数字电视节目参数的获取系统,应用于节目播放,其特征在于,所述请求接收模块包括:播放请求接收单元,用于接收电视节目的播放请求;所述终端还包括:节目参数第一发送模块,用于根据所述播放请求,将预设节目信息库中保存的已搜索到的第二节目参数发送到音视频解码器中以用于进行节目播放,所述第二节目参数至少包括音频包标识符、视频包标识符、节目参考时钟包标识符;判断模块,用于分别对应判断所述第一节目参数中的音频包标识符、视频包标识符、节目参考时钟包标识符与所述第二节目参数中的音频包标识符、视频包标识符、节目参考 时钟包标识符是否全部对应相同;节目参数第二发送模块,用于当所述第一节目参数中的音频包标识符、视频包标识符、节目参考时钟包标识符与所述第二节目参数中的音频包标识符、视频包标识符、节目参考时钟包标识符没有全部对应相同时,将所述第一节目参数发送到所述音视频解码器中以用于进行所述节目播放。
- 如权利要求13所述的数字电视节目参数的获取系统,应用于节目搜索,其特征在于,所述请求接收模块还包括:搜索请求接收单元,用于接收电视节目的搜索请求;所述终端还包括:节目参数保存模块,用于将所述第一节目参数保存到预设节目信息数据库中;频点设置模块,用于将下一频点设为当前频点。
- 如权利要求13所述的数字电视节目参数的获取系统,还包括前端,其特征在于,所述前端包括:生成模块,用于生成所述SDT表的预设描述子的对应数据段;获取模块,用于获取每一节目所对应的第三节目参数,所述第三节目参数至少包括音频包标识符、视频包标识符、节目参考时钟包标识符;封装模块,用于根据预定义的数据封装格式,将获取的每一节目所对应的所述第三节目参数插入对应所述SDT表的所述预设描述子的对应数据段中并进行数据封装;发送模块,用于将完成数据封装后的所述SDT表打包生成传输流数据并发送给所述终端。
- 如权利要求14所述的数字电视节目参数的获取系统,还包括前端,其特征在于,所述前端包括:生成模块,用于生成所述SDT表的预设描述子的对应数据段;获取模块,用于获取每一节目所对应的第三节目参数,所述第三节目参数至少包括音频包标识符、视频包标识符、节目参考时钟包标识符;封装模块,用于根据预定义的数据封装格式,将获取的每一节目所对应的所述第三节目参数插入对应所述SDT表的所述预设描述子的对应数据段中并进行数据封装;发送模块,用于将完成数据封装后的所述SDT表打包生成传输流数据并发送给所述终端。
- 如权利要求15所述的数字电视节目参数的获取系统,还包括前端,其特征在于,所述前端包括:生成模块,用于生成所述SDT表的预设描述子的对应数据段;获取模块,用于获取每一节目所对应的第三节目参数,所述第三节目参数至少包括音频包标识符、视频包标识符、节目参考时钟包标识符;封装模块,用于根据预定义的数据封装格式,将获取的每一节目所对应的所述第三节目参数插入对应所述SDT表的所述预设描述子的对应数据段中并进行数据封装;发送模块,用于将完成数据封装后的所述SDT表打包生成传输流数据并发送给所述终端。
- 如权利要求16所述的数字电视节目参数的获取系统,其特征在于,所述加载模块包括:锁频单元,用于锁住当前频点以获得频点信息;第一过滤单元,用于根据预设的所述SDT的包标识符与表标识符,过滤所述频点信息以得到所述SDT;所述解析模块包括:第二过滤单元,用于根据所述预设描述子的预设标记,过滤所述SDT以得到所述预设描述子;解析单元,用于根据所述数据封装格式,解析所述预设描述子,得到当前频点对应节目的所述第一节目参数。
- 如权利要求17所述的数字电视节目参数的获取系统,其特征在于,所述加载模块包括:锁频单元,用于锁住当前频点以获得频点信息;第一过滤单元,用于根据预设的所述SDT的包标识符与表标识符,过滤所述频点信息以得到所述SDT;所述解析模块包括:第二过滤单元,用于根据所述预设描述子的预设标记,过滤所述SDT以得到所述预设描述子;解析单元,用于根据所述数据封装格式,解析所述预设描述子,得到当前频点对应节目的所述第一节目参数。
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| CN105763940A (zh) * | 2016-02-26 | 2016-07-13 | 青岛海信电器股份有限公司 | 一种进行节目播放的方法和设备 |
| CN109275041B (zh) * | 2018-11-09 | 2020-10-23 | 四川长虹电器股份有限公司 | 一种自动获取数字节目信息的方法 |
| CN112672215B (zh) * | 2020-12-17 | 2021-12-21 | 四川长虹电器股份有限公司 | 一种过滤电视无效节目的方法 |
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