CN107707973A - A kind of method of fast search digital television program - Google Patents
A kind of method of fast search digital television program Download PDFInfo
- Publication number
- CN107707973A CN107707973A CN201610696761.4A CN201610696761A CN107707973A CN 107707973 A CN107707973 A CN 107707973A CN 201610696761 A CN201610696761 A CN 201610696761A CN 107707973 A CN107707973 A CN 107707973A
- Authority
- CN
- China
- Prior art keywords
- frequency
- digital television
- television program
- search
- tables
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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 MPEG packets from an IP network
- H04N21/4383—Accessing a communication channel
-
- 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
-
- 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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/84—Generation or processing of descriptive data, e.g. content descriptors
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
Abstract
The present invention relates to digital TV field, and it discloses a kind of method of fast search digital television program, solves the problems, such as that search speed can not meet user's request in conventional art.This method comprises the following steps：A. all SDT tables of whole network are generated on front-end server and are added in dominant frequency point；B. when set top box searches for digital television program, NIT tables and all SDT tables are first searched on dominant frequency point；Again to pat table and pmt table corresponding to the frequency is searched on each frequency, the PID of audio frequency and video is obtained, so as to complete the program searching of the frequency.The present invention is applied to DTV quick channel search.
Description
Technical field
The present invention relates to digital TV field, and in particular to a kind of method of fast search digital television program.
Background technology
In the bid test of DTV, operator and client increasingly value the performance of set top box, are searched in performance
Speed is the very important ring that seems again.But due to the limitation of DVB front-end specifications, the transmission speed of form be it is certain,
Which limits the search speed of digital television devices.
According to the specification of DVB (DVB), the automatic way of search of set top box is to arrive first to go for NIT on dominant frequency point
(network information table), to obtain the frequency point information of each frequency of the network；PAT (the sections of each frequency removal search frequency are arrived again
Mesh contingency table), PMT (Program Map Table) and SDT (service describing table), to obtain the audio/video information of the frequency program and program
Name.I.e. set top box, which often obtains a TV programme, must will access tri- forms of PAT, PMT and SDT, could obtain the program
Complete information, it is well known that the program of DTV generally has up to a hundred, and such search speed obviously can not meet user
The demand of quick channel search.
The content of the invention
The technical problems to be solved by the invention are：A kind of method of fast search digital television program is proposed, solves to pass
Search speed can not meet the problem of user's request in system technology.
The technical solution adopted for the present invention to solve the technical problems is：A kind of side of fast search digital television program
Method, comprise the following steps：
A. all SDT tables of whole network are generated on front-end server and are added in dominant frequency point；
B. when set top box searches for digital television program, NIT tables and all SDT tables are first searched on dominant frequency point；Arrive again
Pat table and pmt table corresponding to the frequency are searched on each frequency, the PID of audio frequency and video is obtained, is searched so as to complete the program of the frequency
Rope.
As further optimization, all SDT tables include the SDT tables of dominant frequency point SDT tables and other each frequencies.
As further optimization, when set top box searches for digital television program, completed in a cycle to all SDT tables
It is disposable all search.
The beneficial effects of the invention are as follows：The SDT tables of each frequency search will be placed on originally, when being placed on progress dominant frequency point search
Disposable all search, when specifically searching for each frequency, do not search again for SDT tables, so as to accelerate the speed of program searching, show
Write the performance for improving set top box.
Embodiment
According to DVB specification, the automatic way of search of set top box is to arrive first to go for NIT tables on dominant frequency point, to obtain the net
The frequency point information of each frequency of network；The PAT of each frequency removal search frequency, PMT, SDT tables, to obtain the frequency program are arrived again
Audio/video information and program names.
Specification is sent according to the form of DVB front ends, NIT, the transmission cycle of SDT tables is 5 seconds (circulating cycles of single form
Phase), PAT, PMT the transmission cycle are 0.25 second.If we are calculated, find that such mode has to each frequency
5 seconds may be spent to wait SDT tables so that the search speed of set top box is slack-off.
In order to lift the speed of set top box program searching, the form that the cycle is grown is put together search by we, and the cycle is short
Form separately search.
Its implementation comprises the following steps：
A. NIT tables and all SDT tables are searched on dominant frequency point, has obtained the frequency parameter of network and the section of all programs
Mesh name.
B. to removal search PAT and pmt table on each frequency, to obtain the PID of audio frequency and video, search is completed.
With reference to embodiment, the present invention is further illustrated.
Embodiment：
The cycle is sent according to front end form, it will be assumed that certain network one shares 20 frequencies.
According to original way of search, it would be desirable in dominant frequency point search NIT tables, consume 5 seconds, then each frequency is successively
Search for PAT, PMT, SDT forms, each frequency cost 0.25+0.25+5=5.5 seconds, then we need to use up 5+5.5*20=
The search time (only computation sheet time) of 115 seconds.
We are together searched NIT and SDT by the way of new, in dominant frequency point, it is necessary to spend the 5+5=10 seconds, each form
Search for PAT, pmt table lattice, it is only necessary to the 0.25+0.25 seconds, so we only need 10+0.5*20=20 seconds can completion search
Rope, speed are only the 1/6 of former speed, substantially increase the performance of set top box.
Claims (3)
- A kind of 1. method of fast search digital television program, it is characterised in that comprise the following steps：A. all SDT tables of whole network are generated on front-end server and are added in dominant frequency point；B. when set top box searches for digital television program, NIT tables and all SDT tables are first searched on dominant frequency point；Arrive again each Pat table and pmt table corresponding to the frequency are searched on frequency, obtains the PID of audio frequency and video, so as to complete the program searching of the frequency.
- 2. a kind of method of fast search digital television program as claimed in claim 1, it is characterised in that described all SDT tables include the SDT tables of dominant frequency point SDT tables and other each frequencies.
- 3. a kind of method of fast search digital television program as claimed in claim 1, it is characterised in that searched in set top box During digital television program, complete all to search for the disposable of all SDT tables in a cycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610696761.4A CN107707973A (en) | 2016-08-19 | 2016-08-19 | A kind of method of fast search digital television program |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610696761.4A CN107707973A (en) | 2016-08-19 | 2016-08-19 | A kind of method of fast search digital television program |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107707973A true CN107707973A (en) | 2018-02-16 |
Family
ID=61169384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610696761.4A Pending CN107707973A (en) | 2016-08-19 | 2016-08-19 | A kind of method of fast search digital television program |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107707973A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101175204A (en) * | 2007-11-21 | 2008-05-07 | 中兴通讯股份有限公司 | Method for searching electric program menu in digital television system |
| US20080301730A1 (en) * | 2007-05-29 | 2008-12-04 | Legend Holdings Ltd. | Method and device for TV channel search |
| CN101572798A (en) * | 2009-06-01 | 2009-11-04 | 深圳华为通信技术有限公司 | Method, device and system for program searching |
| CN103269441A (en) * | 2013-05-30 | 2013-08-28 | 四川长虹电器股份有限公司 | Method for searching digital television programmes fast |
| CN103596039A (en) * | 2013-11-05 | 2014-02-19 | 四川九州电子科技股份有限公司 | Rapid and automatic program searching method for digital set top box |
-
2016
- 2016-08-19 CN CN201610696761.4A patent/CN107707973A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080301730A1 (en) * | 2007-05-29 | 2008-12-04 | Legend Holdings Ltd. | Method and device for TV channel search |
| CN101175204A (en) * | 2007-11-21 | 2008-05-07 | 中兴通讯股份有限公司 | Method for searching electric program menu in digital television system |
| CN101572798A (en) * | 2009-06-01 | 2009-11-04 | 深圳华为通信技术有限公司 | Method, device and system for program searching |
| CN103269441A (en) * | 2013-05-30 | 2013-08-28 | 四川长虹电器股份有限公司 | Method for searching digital television programmes fast |
| CN103596039A (en) * | 2013-11-05 | 2014-02-19 | 四川九州电子科技股份有限公司 | Rapid and automatic program searching method for digital set top box |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: Room 529, Building 2, Innovation Center, Kechuang District, Mianyang City, Sichuan Province, 621000 Applicant after: SICHUAN CHANGHONG NETWORK TECHNOLOGY CO., LTD. Address before: 621000 Sichuan Changhong Network Technology Co., Ltd. Mianyang Kechuang Park, Mianyang City, Sichuan Province Applicant before: SICHUAN CHANGHONG NETWORK TECHNOLOGY CO., LTD. |
|
| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180216 |
|
| RJ01 | Rejection of invention patent application after publication |