CN1722794A - Digital broadcasting receiver - Google Patents
Digital broadcasting receiver Download PDFInfo
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- CN1722794A CN1722794A CNA2004100529280A CN200410052928A CN1722794A CN 1722794 A CN1722794 A CN 1722794A CN A2004100529280 A CNA2004100529280 A CN A2004100529280A CN 200410052928 A CN200410052928 A CN 200410052928A CN 1722794 A CN1722794 A CN 1722794A
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- keyword
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- digital broadcasting
- broadcasting receiver
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Abstract
This invention relates to a digital broadcasting receiver technique, which makes the user selecting and viewing the favorite program. The digital broadcasting receiver comprises: program key word memory, used for storing and output program unit key word according to the received signal service information table; the key word input unit, used for inputting program inner structure factor unit key word; the video frequency sequence key word memory, used for storing the inserted video frequency key word; the airway controller, making sure it can hunt and view program by program structure factor unit; the PTS/ DTS generator and storing media, used for replacing and storing PTS(Presentation Time Stamp) and DTS(Decoding Time Stamp) information when generating new program.
Description
Technical field
The present invention is the technology of relevant digital broadcasting receiver.By the technology of the present invention, insert keyword at the user data (User Data) of video sequence, select and watch and oneself like the program structure factor seen for the user.
Background technology
For in Digital Television broadcast field, the service to the user provides a higher level except transmitting the most basic audio/video (A/V) data, has also increased information on services (Service information; SI) transmit service.
In view of the above, digital broadcasting receiver is by said additional information (SI), with garaph user interface (Graphic User Interface; GUI) mode provides the service of current broadcast and activity (event) information (=like see program) to the user.In addition, digital broadcasting receiver also can play navigation (navigation) effect between every service or the activity.For example, the user can directly carry out on picture under the situation that need not newpapers and periodicals or other media guidance, search, and the available electron mode is selected broadcast program.
If be input to the current channel play signal of system for receiving digital broadcasts, with the form input data of transport stream (transport stream), system for receiving digital broadcasts will be analyzed the data of (parsing) TS form so, and accesses information on services (SI).
At this moment, program image and speech data that the user selects in TS are carried out the information of encoding process for supplying the user to watch in the A/V encoder, and to picture and loud speaker output.
For example, among the SI that accesses in the module that accesses additional informations such as type, the program category that detects current broadcast belongs to the problem of types such as news, drama, physical culture, film, exhibition, amusement.
Detected information will be marked on the appropriate location of picture, understand current broadcast program type of watching for the user.
In sum, provide the service of program keyword to be meant, utilize the service information table (Service Information Table) of each broadcast specification, show the method for the structural factor of each program.
But digital broadcasting receiver of the prior art has following several problem:
In the prior art, if the user provides service manner to watch the program structure factor by type or the appearance personage with certain program as additional information, and utilize the keyword search that service information table provides and watch program, need the user to wait until so always and play till the program of oneself liking seeing.
If the user wishes in news channel, watch news program about Asian Games North Korea mission cheer, and by keyword search methodology of the prior art search and watch news program, because the user does not know in advance when the news program of relevant North Korea mission cheer broadcasts, so need watch all news contents.
Summary of the invention
The present invention is intended to solve the existing the problems referred to above of digital broadcasting receiver of the prior art, provide a user data (User Data) to insert keyword, select and watch the digital broadcasting receiver of oneself liking the program structure factor seen for the user at video sequence.
For achieving the above object, the digital broadcasting receiver in of the present invention is made up of following structure: promptly, by the play signal service information table that receives, preserve and the program keyword memory of output program unit keyword; Be not input program unit, but the keyword loader of input program internal structure factor unit keyword; Preservation is with the video sequence keyword memory of the video sequence keyword of program structure factor unit insertion; By channel control, guarantee with the search of program structure factor unit and watch the channel controller of program; In the process Shen of creating new program by keyword, replace and preserve the PTS/DTS generator of PTS (Presentation Time Stamp), DTS (Decoding Time Stamp) information and preserve medium.
The digital broadcasting receiver that is developed into according to the present invention has following invention effect: promptly,
The first, the user by program unit keyword search and when watching a certain program, if the user only need watch the specific program structural factor in this program, need not to wait as long for the broadcast of this structural factor.
The second, when the user plans with a certain particular keywords cutting program structure factor or edits other program, can search the ad hoc structure factor rapidly, and, also can preserve the ad hoc structure factor need not to watch under the situation of all programs.
Three, by the mode of simple computation, the PTS/DTS problem that is clashed when solving the program structure factor of editing and preserving particular keywords.
Description of drawings
Fig. 1 is the digital broadcasting receiver construction module figure that is developed into according to the present invention,
Fig. 2 is the digital broadcasting receiver high vision figure place code flow structure figure that is developed into according to the present invention,
Fig. 3 is the example structure figure that inserts keyword at user data field,
Fig. 4 is the principle description architecture figure to the PTS/DTS generator.
* the symbol description * of accompanying drawing major part
11. inverse multiplexing device 12. program keyword memories
13. channel controller 14. displays
15. keyword loader 16. is preserved medium
17. video sequence keyword memory 18.PTS/DTS generator
Embodiment
With reference to picture the present invention other purpose, characteristics and the effect thereof of the digital broadcasting receiver embodiment among the present invention are elaborated, will a understanding of further understanding be arranged the present invention.
Describe as follows with reference to picture to the most preferred embodiment of the digital broadcasting receiver among the present invention:
Fig. 1 is the digital broadcasting receiver construction module figure that is developed into according to the present invention, and Fig. 2 is the digital broadcasting receiver high vision figure place code flow structure figure that is developed into according to the present invention.
In the present invention, the insertion of keyword is not to be a program unit, but it is considered as video sequence (Video Sequence) or video GOP (Group of Pictures) unit.
The present invention inserts keyword at the user data field of forming the MPEG-2 video standard, and analyzes the user data field of stipulating in receiver, to understand key word information.
The operation of the digital broadcasting receiver that is developed into according to the present invention also has following SOME METHODS: the method that the keyword of the keyword understood and user's input is compared; When above-mentioned two keywords are consistent, the method for switching channels in order to watch program; When above-mentioned two keywords are consistent, generate DTS, PTS information in order to preserve data, and send the method for preserving medium to by the mode of inserting.
As shown in Figure 1,, also comprise following two kinds in the structure of the present invention: receive broadcast code flow, carry out multiplexingization processing to transmitting bag, and show or preserve the inverse multiplexing device 11 of selected channel for realizing said method; Preserve program and import data, and, preserve and export the program keyword memory 12 of general programs unit's keyword by service information table.
Handle the video sequence keyword and need following several structures: the keyword loader 15 that the input video sequence keyword is required; The channel controller 14 that the channel that is presented on display 14 pictures is controlled; To passing through keyword, the program factor sum that accesses from each program is used for creating the PTS/DTS generator 18 that PTS (Presentation TimeStamp), DTS (Decoding Time Stamp) information that the program process that only belongs to another user preserves is changed; Preserve the PTS in the PTS/DTS generator 18, the preservation medium 16 of DTS information; Preservation is inserted into the video sequence keyword memory 17 of the video sequence keyword in the video sequence (program structure factor or video field unit).
In the digital broadcasting receiver that is developed into according to the present invention, watch that the running of keyword selection program factor is as follows: promptly,
If input video sequence keyword in keyword loader 15, video sequence keyword memory 17 will be searched for corresponding keyword to the input video code stream.
At this, video sequence memory 17 can be a kind of simple register, utilizes the keyword of comparator and input video code stream to compare then.
The input video code stream passes through program keyword memory 12 by disposable filtering.
If the keyword of video sequence keyword memory 17 and the keyword of input video code stream are consistent, will transfer to the channel that includes video code flow from channel controller 13, the user then can watch this information program.
In the present invention, insert keyword in the mode of video sequence or video GOP unit according to the method described above, for user search and watch certain program picture or a series of program factor unit, but not only search for a certain program unit.
If the A of TV station, B, C play news program at the same time, and news broadcast time of the user relevant North Korea mission cheer that wishes to watch has nothing in common with each other, the user need not frequent switching channels so, to check the news of relevant North Korea mission cheer, as long as input keyword (ex＞North Korea mission cheer), system will automatically switching channels, shows the news scene of relevant North Korea mission cheer.
In addition, if the user has imported keyword in the time that can't watch in real time, the present invention also can preserve and edit broadcasting pictures or the program structure factor corresponding to each keyword in order, creates a broadcast program of only watching for people of user.
For example, the user wishes to collect all scenes that famous actor Zhang Na is pulled in the time performance that oneself can't watch in real time, can be by the method search performance scene of keyword input, and utilize DTS, the PTS generator 18 of system and preserve medium 16, create a broadcast program of only watching for people of user.
In the digital broadcasting receiver that is developed into according to the present invention, editor also preserves keyword and selects the running of program factor as follows: promptly,
Fig. 3 is the example structure figure that inserts keyword at user data field, and Fig. 4 is the principle description architecture figure to the PTS/DTS generator.
In the present invention, keyword insertion method is not to be meant the keyword that inserts with all program units, and be meant with video sequence (program structure factor or video field unit) insertion keyword, and the insertion of the user data field in video sequence keyword, but not in system message list, finish the keyword insertion process.
In addition, when beginning to search for the program structure factor according to the interaction of key word analysis and program guide, system's meeting automatically switching channels, and through PTS, DTS generator, to be saved in corresponding to each the program factor of keyword and preserve in the medium, create a broadcast program of only watching for people of user.
Transmitter will according to and receiver between agreement insert the video sequence keyword, be to utilize the user data field (User Data Field) that meets MPEG 2 video specification (ISO/IEC-13818-2) to finish and insert the video sequence keyword.
In each digital broadcast specification, user data field has only been made regulation to title data at present, and in the present invention, insertion defines to the keyword among Fig. 2 again.
In the image bit bitstream structure in Fig. 2, give the user data field insertion keyword (as shown in Figure 3) that needs the GOP of keyword or meet sequence label (Sequence Header).
Image bit bitstream (High level video bit stream) is made up of following several fields: promptly, and sequence label field; Sequence extension (Sequence extension) field; User data field (the Extension ﹠amp that meets keyword insetion sequence label; User); GOP label (Group of Pictures) field; Meet the user data field that keyword inserts the GOP label; Image label field; The image spreading coding field; Image data universe.
Because the keyword of each Korean word accounts for 2 bytes, and the keyword of each English alphabet accounts for 1 byte, so can insert the literal number in the transmission range of capacity that meets Closed title specification, and the shared length of keyword is not very big, so greatly can relieved insertion keyword.
In addition, when preserving selected program structure factor with PES (Packet Elementary Stream) unit, until in video sequence keyword memory 17, the process that compares with the keyword of input video code stream is consistent.Their difference is, will be in the time that need are preserved, and the keyword program factor sum to each program is used to create the program process that only belongs to another user, so need not to change PTS, the DTS information of preservation.
In PTS/DTS generator 18, from being designated as the PTS/DTS value of initial value, utilize STC (System Time Clock) value, generate new PTS/DTS value, and the PTS/DTS value that original program structure factor is had can be cancelled when preserving.
At this, the method that generates new PTS/DTS value is as follows: promptly,
As shown in Figure 4, to the corresponding to initial program structure factor A of keyword, will use the initial value of PTS/DTS generator 18, but also can directly use current STC value.
In program structure factor A after this,, increase the value of PTS/DTS generator according to original PTS/DTS recruitment.When continuing to be saved in other program structure factor B among the A, will directly use the value of PTS/DTS generator 18 out of service, and in the same way, in program structure factor B, original PTS/DTS recruitment is used for PTS/DTS generator 18 Shens.
If in the middle of structural factor, PTS/DTS value does not originally exist or is fuzzy, just will be used for PTS/DTS generator 18 according to the value that the STC value calculates.
When the relevant PCR (Program Clock Reference) of needs generation is worth, to the directly suitable method before this of the PTS/DTS that preserves.
The digital broadcasting receiver that is developed into according to the present invention can shorten the user and is and watch program structure factor or video field and the time that wait on all program limits is seen on the limit, and you collect program structure factor or video pictures, and they are compiled a broadcast program.
By above-mentioned description, so long as the related work personnel just can carry out various deformation and repacking in not breaking away from technological thought scope of the present invention.
Therefore, technical scope of the present invention is not limited to above-mentioned several specific embodiment, but depends on patent claim of the present invention.
Claims (4)
1, a kind of digital broadcasting receiver of the present invention, form by following structure: promptly,
By the play signal service information table that receives, preserve and export the program keyword memory of program unit's keyword;
Input program internal structure factor unit keyword, but not the keyword loader of input program unit;
Preservation is with the video sequence keyword memory of the video sequence keyword of program structure factor unit insertion;
By channel control, guarantee with the search of program structure factor unit and watch the channel controller of program;
Creating by keyword in the process of new program, replacing and preserve the PTS/DTS generator of PTS (Presentation Time Stamp), DTS (Decoding Time Stamp) information and preserve medium.
2, digital broadcasting receiver as claimed in claim 1, it is characterized by, program structure factor unit is video sequence or video GOP (Group of Picture), and keyword should be inserted in the user data field that meets video sequence or video GOP (Group of Picture) label.
3, digital broadcasting receiver as claimed in claim 1 is characterized by, and inserts the image bit bitstream of keyword and should be made up of following several fields: promptly, and sequence label field; The sequence extension field; User data field (the Extension﹠amp that meets keyword insetion sequence label; User); GOP label (Group of Pictures) field; Meet the user data field that keyword inserts the GOP label; Image label field; The image spreading coding field; Image data universe.
4, digital broadcasting receiver as claimed in claim 1, it is characterized by, behind the input video sequence keyword, the input video code stream is searched for corresponding keyword, and the control by channel controller, switch to the channel of the keyword that the includes video sequence keyword memory corresponding video code stream identical with the keyword of input video code stream.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100529280A CN1722794A (en) | 2004-07-16 | 2004-07-16 | Digital broadcasting receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100529280A CN1722794A (en) | 2004-07-16 | 2004-07-16 | Digital broadcasting receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1722794A true CN1722794A (en) | 2006-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004100529280A Pending CN1722794A (en) | 2004-07-16 | 2004-07-16 | Digital broadcasting receiver |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1845595B (en) * | 2006-04-30 | 2010-05-26 | 北京中星微电子有限公司 | Method for transmitting, extracting and searching program information and search engine, set-top box |
-
2004
- 2004-07-16 CN CNA2004100529280A patent/CN1722794A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1845595B (en) * | 2006-04-30 | 2010-05-26 | 北京中星微电子有限公司 | Method for transmitting, extracting and searching program information and search engine, set-top box |
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