CN1406060A - Method for broadcasting electronic programme guide based on digital audio-video-frequency broadcast standard - Google Patents
Method for broadcasting electronic programme guide based on digital audio-video-frequency broadcast standard Download PDFInfo
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- CN1406060A CN1406060A CN 01141742 CN01141742A CN1406060A CN 1406060 A CN1406060 A CN 1406060A CN 01141742 CN01141742 CN 01141742 CN 01141742 A CN01141742 A CN 01141742A CN 1406060 A CN1406060 A CN 1406060A
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Abstract
The digital audio and video playing back server reads out the electric program guide document to be played back and stored in the information database of the electric program guide document. Then, the electric program guide documents are played back according to the playing back time sequences. The method provided in the invention suits the ever-growing needs of managing and playing back the digital audio and video programs as well as the guide information of the electric programs. The mode for playing back the digital program guide is the playing mode in multiple channels so as to raise the speed for playing back the guide information of the electric program and the efficiency.
Description
Technical field:
The present invention relates to a kind of player method of the electronic program guides based on digital audio-video-frequency broadcast standard, be meant a kind of player method that is applicable to the electronic program guides of digital audio-video-frequency broadcast system especially, the digital audio/video playing device is concentrated that broadcast will be made by digital audio/video program making merchant and is sent to the unified electronic program guide information of depositing in the electronic program guides fileinfo storehouse.
Background technology:
Along with the development of computer technology, mechanics of communication and digital broadcasting technology, digital audio-video-frequency broadcast has obtained swift and violent development.Along with the broadcast of more and more digital audio/video programs, electronic program guides (being designated hereinafter simply as EPG) becomes the necessary aid of watching program of digital audio/video program audience.Therefore also become part and quilt making, broadcast and the reception of digital audio/video program based on the electronic program guides of digital audio-video-frequency broadcast standard.
At present, because the digital audio/video programming is generally chargeable service, so generally make and provide by digital audio/video program making merchant based on the electronic program guides of digital audio-video-frequency broadcast standard, although the standard of digital audio-video-frequency broadcast is observed in the making of existing electronic program guides, but, the making and the broadcast of electronic program guides mix, the requirement of incompatible actual operation, and the efficient of its propagation and utilization is very low.
Generation along with increasing digital audio/video program and electronic program guides thereof, the electronic program guide information of digital audio/video program has begun to change standardized production method into by the production method of past nonstandardized technique, therefore, the decentralized broadcast mode of the traditional electronic program guide information inefficiency that just seems, demand is play in the digital audio/video program that incompatibility is growing and the operation of electronic program guide information thereof.
Summary of the invention:
Main purpose of the present invention is to provide a kind of player method of the electronic program guides based on digital audio-video-frequency broadcast standard, the digital audio/video playing device is concentrated that broadcast will be made by digital audio/video program making merchant and is sent to the unified electronic program guide information of depositing in the electronic program guides fileinfo storehouse, and demand is play in the operation that meets growing digital audio/video program and electronic program guide information thereof.
The objective of the invention is to realize by the following technical solutions: a kind of player method of the electronic program guides based on digital audio-video-frequency broadcast standard, digital audio/video broadcasting server reading and saving electronic program guides file in electronic program guides file information data storehouse, to be played is play this electronic program guides file then according to the time sequencing of broadcasting.
Described broadcast has following step:
1, opens the EPG file, read the information of all passages, business and program in the file;
2, with the information setting of reading to the interface of playout software, find current in progress program automatically by playout software;
3, with current program and its back all will broadcast program information be encapsulated into program information table (being designated hereinafter simply as EIT) lining, simultaneously the information of all passages is encapsulated in the network information table (being designated hereinafter simply as NIT), all professional information are encapsulated in the SDT Service Description Table (being designated hereinafter simply as SDT);
4, the information with three tables in the step 3 is packaged into electronic program guides transport stream (being designated hereinafter simply as TS), by the playing device on the server that is installed in Play System this electronic program guides transport stream is played out.
The generation method of described electronic program guides transport stream is: service information table (being designated hereinafter simply as SI) is splitted into the segment of specified byte length, add the packet header of electronic program guides transport stream (TS) in the front portion of every segment data; Concrete step is as follows:
1, the quantity of calculation services information table;
If 2 current segmentations have been write, then package finishes;
3 otherwise calculate the bag number that current segmentation can encapsulate;
4, current Bao Wei has write, and then segments successively decreases, and changes step 2;
5 otherwise write header packet information;
If 6 current bags are first bag, and remaining data volume then writes the table data of 183 bytes greater than 183 bytes, commentaries on classics step 10;
If 7 current bags are first bag, and remaining data volume is not more than 183 bytes, then writes remaining table data, fills remaining space, changes step 10;
If 8 current bags are not first bags, and remaining data volume then writes the table data of 184 bytes greater than 184 bytes, commentaries on classics step 10;
If 9 current bags are not first bags, and remaining data volume is not more than 184 bytes, then writes remaining table data, fills remaining space;
10, the bag number successively decreases, and changes step 4.
Every thresholding in the packet header of described electronic program guides transport stream is observed the regulation of digital audio/video standard.
Described electronic program guides transport stream comprises at least: be encapsulated into channel information in the network information table (NIT), be encapsulated into business information in the SDT Service Description Table (SDT), be encapsulated into the programme information in the program information table (EIT); Wherein:
This channel information comprises the data of channel information at least;
This business information comprises the data of business information at least;
This programme information comprises the data of programme information at least.
Described digital audio/video broadcasting server also changes the state that refreshes program automatically according to the time of program, regenerates and play new electronic program guide information; Concrete method is: a program state is set detects a timer and a program refresh timer, detect the situation of change that timer regularly detects program by this program state, the program refresh timer refreshes program state and regenerates, plays new electronic program guide information according to the testing result that program state detects timer.
The concrete steps that program state detection timer recited above regularly detects program are as follows:
1, regular check program state;
If 2 program state do not change, then turn back to step 1;
3 otherwise the value of revising the program state variable for changing, turn back to step 1.
The testing result that program refresh timer recited above detects timer according to program state refreshes program state and regenerates, plays the concrete steps of new electronic program guide information as follows:
The value of 1, regular check program state variable;
If the value of 2 these program state variablees then turns back to step 1 for not changing;
3 otherwise, refresh program state;
4, play new electronic program guide information, turn back to step 1.
The broadcast of described electronic program guide information is a buffering area internal memory of electronic program guide information being read Play Server, adopts asynchronous system to send the transport stream of this electronic program guide information then; And after reading at every turn and send data and finishing, all to write down to be used to make and send and read in synchronous current state value.
Described transmission buffering area is the region of memory of annular; Wherein be provided with to point to and deposit pointer that reads in data address and the pointer that sends the address; When the end of this pointed core buffer, move the starting position of just pointing to this core buffer again once more, to the concrete operating procedure that sends buffer area read-write be:
1, whether the transport stream of electronic program guide information is to write state, is not then to forward step 4 to;
2, with the asynchronous playing device of writing of the transfer stream file of electronic program guide information, this document is set to readable state after having write;
3, the internal memory counter increases progressively, and returns step 1;
4, whether the transport stream of electronic program guide information is readable state, is not then to return step 1;
5, the asynchronous transfer stream file that reads in electronic program guide information, this document is set to the state of can writing after running through;
6, the internal memory counter increases progressively;
7, whether having read the afterbody of the transfer stream file of electronic program guide information, is not then to forward step 1 to;
8, replacement file pointer and read-write state forward step 1 to.
Method provided by the invention, concentrate to be play that digital audio/video program making merchant will make and be sent to the unified electronic program guide information of depositing in the electronic program guides fileinfo storehouse by the digital audio/video playing device, demand is play in its operation that meets growing digital audio/video program and electronic program guide information thereof; And the broadcast mode of this electronic program guides is multichannel broadcast mode, has improved the broadcasting speed and the efficient of electronic program guide information.
The present invention is described in further detail below in conjunction with accompanying drawing and specific embodiment.
Description of drawings:
Fig. 1 is an overall procedure schematic diagram of the present invention.
Fig. 2 is the schematic flow sheet that the electronic program guide information transport stream of one embodiment of the invention generates.
Fig. 3 is the schematic flow sheet of the inspection program state of one embodiment of the invention.
Fig. 4 is the schematic flow sheet that refreshes program state of one embodiment of the invention.
Fig. 5 is the schematic flow sheet of the electronic program guide information transport stream of one embodiment of the invention core buffer read-write when playing.
Embodiment:
Referring to Fig. 1, be located at the electronic program guides Play System of digital audio-video-frequency broadcast device server end, electronic program guides file information data storehouse on this server is conducted interviews, call in the electronic program guides file that needs broadcasting, electronic program guides file that then will be to be broadcast is play according to the time sequencing of broadcasting.In playing process, the electronic program guides Play System changes the state that refreshes program automatically according to time of program, regenerates new electronic program guide information and with its broadcast.This broadcast mainly is to write realization by the port of the digital video of file data electronic program guides Play System being play (being designated hereinafter simply as DVB) card.
After Play System is opened the electronic program guides file, Play System is read all passages in this document, the information of business and program, then with the information setting of reading to the playing program interface, find current in progress program by Automatic Program, then current program and all programme informations that will play of its back are encapsulated in the program information table (EIT), simultaneously the information of all passages is encapsulated in the network information table (NIT), all professional information are encapsulated in the SDT Service Description Table (SDT), information with these tables is packaged into transport stream (TS stream) at last, plays out by the DVB card on the server that is installed in Play System.
Referring to Fig. 2, because the file that the DVB card is play is a transfer stream file, thus need be according to the definition of MPEG-2, information on services (SI) table is splitted into the segment of 184 byte lengths, before every segment data, add transport stream packet header then.The every thresholding in transport stream packet header is observed the regulation of Moving Picture Experts Group-2 in the process of packing, and value in the light of actual conditions, adds the packet header of electronic program guides transport stream in the front portion of every segment data; Concrete step is as follows:
1, the quantity of calculation services information table;
If 2 current segmentations have been write, then package finishes;
3 otherwise calculate the bag number that current segmentation can encapsulate;
4, current Bao Wei has write, and then segments successively decreases, and changes step 2;
5 otherwise write header packet information;
If 6 current bags are first bag, and remaining data volume then writes the table data of 183 bytes greater than 183 bytes, commentaries on classics step 10;
If 7 current bags are first bag, and remaining data volume is not more than 183 bytes, then writes remaining table data, fills remaining space, changes step 10;
If 8 current bags are not first bags, and remaining data volume then writes the table data of 184 bytes greater than 184 bytes, commentaries on classics step 10;
If 9 current bags are not first bags, and remaining data volume is not more than 184 bytes, then writes remaining table data, fills remaining space;
10, the bag number successively decreases, and changes step 4.
Referring to Fig. 3, Fig. 4, be that the variation along with the time changes during owing to the relevant information on services segmentation of electronic program guides; For example: current event in the EIT segmentation and next incident need constantly to upgrade.Therefore, need the new segmentation of the real-time generation of energy to describe the variation of respective program.Concrete method is: a program state is set detects a timer and a program refresh timer, detect the situation of change that timer regularly detects program by this program state, the program refresh timer refreshes program state and regenerates, plays new electronic program guide information according to the testing result that program state detects timer.
Wherein, program state detects the concrete steps that timer regularly detects program and is:
1, regular check program state;
If 2 program state do not change, then turn back to step 3;
3 otherwise the value of revising the program state variable for changing, turn back to step 3.
The testing result that the program refresh timer detects timer according to program state refreshes program state and regenerates, plays the concrete steps of new electronic program guide information as follows:
The value of 1, regular check program state variable;
If the value of 2 these program state variablees then turns back to step 1 for not changing;
3 otherwise, refresh program state;
4, play new electronic program guide information, turn back to step 1.Operating procedure is as follows:
Referring to Fig. 5, the electronic program guide information sending function is to rely on DVB card and development interface thereof to realize.The process that sends is actual to be to read electronic program guide information to the buffering area internal memory, utilizes the transport stream of the electronic program guide information that the input/output interface transmission of DVB card reads in then.Sense data and transmission data all adopt the asynchronous system operation.All to write current state after data are finished reading in and send at every turn, this state value be used to send and read in synchronously.Sending buffering area is the region of memory of an annular.Point to reading in the address and sending the address of store data respectively by two pointers.When pointer arrives the end of region of memory, pointer changes the place that begins that then points to the internal memory sequence again again, can realize like this using less internal memory to finish the transmission of mass data, and can guarantee under the situation of higher transmission and writing speed, to keep the continuity of processing.
Concrete way is: electronic program guide information is read the buffering area internal memory of Play Server, adopt asynchronous system to send the transport stream of this electronic program guide information then; And after reading at every turn and send data and finishing, all to write down to be used to make and send and read in synchronous current state value.
Wherein, send the region of memory that buffering area is an annular; Wherein be provided with to point to and deposit pointer that reads in data address and the pointer that sends the address; When the end of this pointed core buffer, move the starting position of just pointing to this core buffer again once more, to the concrete operating procedure that sends buffer area read-write be:
1, whether the transport stream of electronic program guide information is to write state, is not then to forward step 4 to;
2, with the asynchronous playing device of writing of the transport stream of electronic program guide information, this document is set to readable state after having write;
3, the internal memory counter increases progressively, and returns step 1;
4, whether the transport stream of electronic program guide information is readable state, is not then to return step 1;
5, the asynchronous transfer stream file that reads in electronic program guide information, this document is set to the state of can writing after running through;
6, the internal memory counter increases progressively;
7, whether having read the afterbody of the transfer stream file of electronic program guide information, is not then to forward step 1 to;
8, replacement file pointer and read-write state forward step 1 to.
Claims (10)
1, a kind of player method of the electronic program guides based on digital audio-video-frequency broadcast standard, it is characterized in that: digital audio/video broadcasting server reading and saving electronic program guides file in electronic program guides file information data storehouse, to be played, then this electronic program guides file is play according to the time sequencing of broadcasting.
2, the player method of the electronic program guides based on digital audio-video-frequency broadcast standard according to claim 1, it is characterized in that: described broadcast has following step:
A, open electronic program guides (EPG) file, the information of reading all passages, business and program in the file,
B, with the information setting of reading to the interface of playout software, find current in progress program automatically by playout software,
C, with current program and its back all will broadcast program information be encapsulated into program information table (EIT) lining, simultaneously the information of all passages is encapsulated in the network information table (NIT), all professional information are encapsulated in the SDT Service Description Table (SDT);
D, the information of 3 tables among the step c is packaged into motion picture expert group (MPEG-2) transport stream (TS), this electronic program guides transport stream is played out by the playing device on the server that is installed in Play System.
3, the player method of the electronic program guides based on digital audio-video-frequency broadcast standard according to claim 2, it is characterized in that: the generation method of described electronic program guides transport stream is: with the segment of service information table (SI) encapsulation specified byte length, add the packet header of transport stream (TS) segmentation in the front portion of every segment data; Concrete step is as follows:
The quantity of a, calculation services information table;
If the current segmentation of b has not been write, then package finishes;
C otherwise calculate the bag number that current segmentation can encapsulate;
D, current Bao Wei have write, and then segments successively decreases, and change step b;
E otherwise write header packet information;
If the current bag of f is first bag, and remaining data volume then writes the table data of 183 bytes greater than 183 bytes, commentaries on classics step j;
If the current bag of g is first bag, and remaining data volume is not more than 183 bytes, then writes remaining table data, fills remaining space, changes step j;
If the current bag of h is not first bag, and remaining data volume then writes the table data of 184 bytes greater than 184 bytes, commentaries on classics step j;
If the current bag of i is not first bag, and remaining data volume is not more than 184 bytes, then writes remaining table data, fills remaining space;
J, bag number successively decrease, and change steps d.
4, the player method of the electronic program guides based on digital audio-video-frequency broadcast standard according to claim 3 is characterized in that: every thresholding in the packet header of described electronic program guides transport stream is observed the regulation of Moving Picture Experts Group-2.
5, according to the player method of claim 2 or 3 or 4 described electronic program guidess based on digital audio-video-frequency broadcast standard, it is characterized in that: described electronic program guides transport stream comprises at least successively: be encapsulated into channel information in the network information table (NIT), be encapsulated into business information in the SDT Service Description Table (SDT), be encapsulated into the programme information in the program information table (EIT); Wherein:
This channel information comprises the header part and the data of channel information at least;
This business information comprises the header part and the data of business information at least;
This programme information comprises the header part and the data of programme information at least.
6, the player method of the electronic program guides based on digital audio-video-frequency broadcast standard according to claim 1, it is characterized in that: described digital audio/video broadcasting server also changes the state that refreshes program automatically according to the time of program, regenerates and play new electronic program guide information; Concrete method is: a program state is set detects a timer and a program refresh timer, detect the situation of change that timer regularly detects program by this program state, the program refresh timer refreshes program state and regenerates, plays new electronic program guide information according to the testing result that program state detects timer.
7, the player method of the electronic program guides based on digital audio-video-frequency broadcast standard according to claim 6 is characterized in that: program state detects timer, and regularly to detect the concrete steps of program as follows:
A, regular check program state;
If the b program state does not change, then turn back to step a;
C otherwise the value of revising the program state variable turn back to step a for changing.
8, the player method of the electronic program guides based on digital audio-video-frequency broadcast standard according to claim 6 is characterized in that: the testing result that the program refresh timer detects timer according to program state refreshes program state and regenerates, plays the concrete steps of new electronic program guide information as follows:
The value of a, regular check program state variable;
If the value of this program state variable of b then turns back to step a for not changing;
C otherwise, refresh program state;
D, the new electronic program guide information of broadcast turn back to step a.
9, the player method of the electronic program guides based on digital audio-video-frequency broadcast standard according to claim 1, it is characterized in that: the broadcast of described electronic program guide information is a buffering area internal memory of electronic program guide information being read Play Server, adopts asynchronous system to send the transport stream of this electronic program guide information then; And after reading at every turn and send data and finishing, all to write down to be used to make and send and read in synchronous current state value.
10, the player method of the electronic program guides based on digital audio-video-frequency broadcast standard according to claim 9 is characterized in that: described transmission buffering area is the region of memory of annular; Wherein be provided with to point to and deposit pointer that reads in data address and the pointer that sends the address; When the end of this pointed core buffer, move the starting position of just pointing to this core buffer again once more, to the concrete operating procedure that sends buffer area read-write be:
Whether the transport stream of a, electronic program guide information is to write state, is not then to forward steps d to;
B, with the asynchronous playing device of writing of the transfer stream file of electronic program guide information, this document is set to readable state after having write;
C, internal memory counter increase progressively, and return step a;
Whether the transport stream of d, electronic program guide information is readable state, is not then to return step a;
E, the asynchronous transfer stream file that reads in electronic program guide information, this document is set to the state of can writing after running through;
F, internal memory counter increase progressively;
G, whether having read the afterbody of the transfer stream file of electronic program guide information, is not then to forward step a to;
H, replacement file pointer and read-write state forward step a to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01141742 CN1406060A (en) | 2001-09-17 | 2001-09-17 | Method for broadcasting electronic programme guide based on digital audio-video-frequency broadcast standard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01141742 CN1406060A (en) | 2001-09-17 | 2001-09-17 | Method for broadcasting electronic programme guide based on digital audio-video-frequency broadcast standard |
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| CN1406060A true CN1406060A (en) | 2003-03-26 |
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| CN 01141742 Pending CN1406060A (en) | 2001-09-17 | 2001-09-17 | Method for broadcasting electronic programme guide based on digital audio-video-frequency broadcast standard |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100362866C (en) * | 2004-01-17 | 2008-01-16 | 北京宽视软件技术有限公司 | Method for generating electronic program guide of digital television set |
| CN101448111B (en) * | 2007-11-28 | 2011-08-31 | 瑞萨电子株式会社 | Apparatus for processing program information, system for receiving digital broadcasts, and method for processing program information |
| CN101998156B (en) * | 2009-08-26 | 2012-07-04 | 北大方正集团有限公司 | Program playing method for distributed network playing system |
-
2001
- 2001-09-17 CN CN 01141742 patent/CN1406060A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100362866C (en) * | 2004-01-17 | 2008-01-16 | 北京宽视软件技术有限公司 | Method for generating electronic program guide of digital television set |
| CN101448111B (en) * | 2007-11-28 | 2011-08-31 | 瑞萨电子株式会社 | Apparatus for processing program information, system for receiving digital broadcasts, and method for processing program information |
| CN101998156B (en) * | 2009-08-26 | 2012-07-04 | 北大方正集团有限公司 | Program playing method for distributed network playing system |
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