CN100401774C - Method for realizing large scale digital television video order programme in unidirectional television network - Google Patents
Method for realizing large scale digital television video order programme in unidirectional television network Download PDFInfo
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Abstract
The present invention provides a method for realizing the video-on-order of a digital television in a large-scale mode on unidirectional television networks. A front-end server is used for sending television programs to television networks through digital broadcast, and a user uses a set-top box of the television to receive the television networks and selects the digital broadcast of corresponding television programs; selected television programs are cached on a hard disk in the set-top box of the television for the user to order the television programs to watch the television. Compared with the prior art, the method of the present invention overcomes the defects of the prior art, can support the user to order the television programs in a large-scale mode without circuit reconstruction, and can provide sufficient programs for the user to select and order. Therefore, the present invention has the characteristics of large memory capacity, optional ordering and convenient use. The set-top box of the digital television can be installed outside the digital television and can also be installed in the digital television. For the existing various types of televisions for the users, the set-top boxes can be installed outside the televisions. For television manufacturers, the set-top boxes are preferably installed in the televisions to reduce the occupation of indoor useful spaces.
Description
1, technical field
The present invention relates to a kind of transmission and reception technique of Digital Television, specifically a kind of method that on the unidirectional electrical view, realizes the large scale digital TV Video On Demand.
2, background technology
The main mode of watching video frequency program now is the broadcasting of or satellite wired, wireless by television reception, has broad covered area, supports the unrestricted advantage of number of users, but it has the weakness of himself, as transient, can only passive order watch.Therefore video request program has been subjected to people's attention.Video request program can allow the user select program easily, and can select to begin to play from any place.Video request program solution based on multiple technologies has been arranged at present:
Video request program based on computer network is very ripe through long-term development, but because network bandwidth limitations, the online request number of users is limited.In order to improve the number of users of support, adopted various up-to-date state-of-the-art technology, as improving video compression ratio, adopt server cluster and distribution of content net.The comprehensive use of these technology improves the network video-on-demand number of users, but will realize the universal service to the domestic consumer, also exists very large gap.
On digital television fundamental, utilize cable television network to carry out video-on-demand service, proposed two kinds of schemes also by deep studying.First kind is that cable television network is transformed into two-way net, or utilize dialing or network, user's control commands such as program request are sent to vod server, and server controls played corresponding contents also is modulated to the channel of distribution, and the user accepts.Each user of this mode will monopolize a channel, and the user that can support is very limited, at most hundreds of.Another kind is quasi-video request program mode---NVOD, and video server makes the user oneself adjust the time of watching respective program TV programme time-delay-loop play in several passage/channels.The number of users that this mode is supported is unrestricted, but a program will take a plurality of passage/channels, and selectable program is few.
Therefore, present video on demand techniques ubiquity supports that the user maybe can select the few deficiency of request program less, and distance provides general human nature service to also have bigger distance.
3, summary of the invention
Purpose of the present invention is exactly to provide a kind of method that realizes the digital TV video frequency program request at wired and ground TV broadcast on the net for overcoming above-mentioned shortcoming, do not need to carry out track remodelling, just can support that large-scale user carries out program request, and can provide abundant program to select program request for the user.
The technical scheme that realizes the object of the invention may further comprise the steps:
A, at first keep one to a plurality of analog channels in the frequency space of television transmission, send channel as programme content, the analog channel of each reservation is referred to as to broadcast in advance channel;
B, broadcast channel in advance for one, generate one and surpass the Digital Transmission passage that the normal digital TV broadcasts bandwidth, maximum can take the whole bandwidth of analog channel, and front-end server reads the video frequency program file, carry out data broadcasting by this Digital Transmission passage, this process is called program and broadcasts in advance.Different with common TV is, arrives user side as early as possible in order to make programme content, and the speed of data broadcasting is higher than playing programs speed;
C, before program is broadcast in advance, formulate program and broadcast order in advance, and generate and broadcast EPG in advance, issue;
D, digital TV set-top box receive broadcasts EPG in advance, shows broadcasting listing in advance, selects programs of interest for the user;
E, digital TV set-top box broadcast data broadcasting in the channel in advance according to automatic reception between the pre-sowing time of choosing program, and are saved in and carry out buffer memory in the hard disk, carry out program request for the user.Digital TV set-top box monitors the hard disk free space, and when insufficient space, automatic deletion program is to hold new program;
In case the f user selected program begins to receive, digital TV set-top box just is labeled as available programs to this program, and the prompting user can play.
Wherein described one of step a broadcasts channel in advance and generally takies the 8MHz frequency band.
Wherein the bandwidth of the described digital channel of step b has some differences according to the difference of modulator approach, and the 64QAM that for example adopts in cable TV transmits the highest pact of code check and can reach 41.34Mb/s.Broadcast channel in advance at each, after the broadcast of finishing whole programs, just replay according to the broadcast items table.In a plurality of situations of broadcasting channel in advance, broadcast program in advance and broadcast in the different channel dislocation of broadcasting in advance.Broadcasting channel in advance with 3 is example, broadcasts program ABCDEFGHIJ in advance for good one group that formulates, on different channel by time broadcast order as shown in Figure 1.Broadcast channel in advance for one and can issue the video program content that reproduction time is about 100 to 150 hours DVD quality in one day, amount to 60 to 90 standard films.
Wherein the described EPG that broadcasts in advance of step c comprises following content: program names, program introduction, time span,
File size,＜broadcast channel, time started, concluding time in advance〉...,＜in advance broadcast channel, time started, concluding time.Once can formulate the plan of broadcasting in advance in a week or even month in the future,, can provide hundreds of or even several thousand films according to broadcasting channel number in advance.Broadcasting in advance in the process, can carry out the part modification, removing the program that early adds, adding new program broadcasting the rendition list in advance, and corresponding correction EPG.
Wherein the described digital TV set-top box of steps d need possess and supports this program to broadcast technology in advance, can read and handle the EPG that broadcasts program in advance, possesses big capacity hard disk.Double high-frequency head is adopted in the digital TV set-top box suggestion, and possesses advanced power management function.
Wherein steps d described demonstration to the user broadcast the rendition list in advance, only needs contents such as display program introduction, do not need display program between pre-sowing time.
Wherein step e is described to broadcasting the Data Receiving of channel in advance, for the double high-frequency head digital TV set-top box, when first tuner is normally watched Digital Television, second tuner receives broadcasts content in advance, avoid clashing, when not televiewing, 2 tuners all receive from what difference was broadcast channel in advance and broadcast content in advance; When digital TV set-top box only possesses single tuner, be merely able to utilize the time that does not teleview to receive.Be in off-mode pre-sowing time not needing to receive, arrive need to receive broadcast program in advance, Auto Power On receives shutdown in advance, and when work, can close idle module, as hard disk, tuner, decoding chip etc.
Wherein step e is described is used for the hard disk that buffer memory is broadcast program in advance, and capacity is 60GB at least, 30 hours DVD quality program of buffer memory, suggestion 160GB or bigger, 80 hours programs of buffer memory.Be not enough to hold that the next one will receive when broadcasting program in advance at the hard disk free space, digital TV set-top box is added up the information of any buffered program, according to program file size, time of reception, whether be played, situation such as selected reservation whether, automatically select the deletion program, with buffer memory new broadcast program in advance.
Wherein among the step f, digital TV set-top box provides tabulation buffer memory and that receiving the program of buffer memory to the user, carry out program request for the user and appreciate.Be higher than playback rate far away owing to broadcast the transmission rate of program in advance, therefore can just can appreciate reception pre-sowing time of user.
Because the present invention has adopted the user to delimit the program request demand of oneself earlier, content caching can cover user's program request purpose preferably to the digital TV set-top box big capacity hard disk then, real program request is carried out in this locality, not influenced by extraneous factor such as network, have control completely, effective.
4, embodiment
The technical scheme that realizes the object of the invention may further comprise the steps:
A, in the storage server of the front end system of wired or wireless TV, preserve a large amount of video frequency program files;
B, select some programs at front end system, as later a period of time broadcast content in advance, form and broadcast the rendition list in advance, broadcasting in advance in the process in addition, can be at any time remove programs that some are early selected in the rendition list broadcasting in advance, and increase new program;
C, front end system are broadcast EPG in advance according to broadcasting the rendition list generation in advance at any time, and broadcast to television network.Broadcast EPG in advance and comprise following content: program names, program introduction, time span, file size,＜broadcast channel, time started, concluding time in advance〉...,＜in advance broadcast channel, time started, concluding time 〉;
D, the digital TV set-top box of supporting program to broadcast in advance receive and broadcast EPG in advance, and offer the user broadcasting program names, introduction etc. in advance, and the user can select a large amount of interested programs of broadcasting in advance;
Receive from the corresponding channel of broadcasting in advance between the pre-sowing time of broadcasting program in advance that e, digital TV set-top box select according to the user, and be cached on the big capacity hard disk;
F, digital TV set-top box prompting subscriber's local are or just at the rendition list of buffer memory, user's program request is therein appreciated.
Digital TV set-top box can adopt and externally also can adopt built-inly, can adopt externally for the television set of the existing various standards of user, and television set manufacturer then should select to produce built-in television set and take the indoor useful space with minimizing.
Claims (6)
1. on the unidirectional electrical view, realize the method for large scale digital TV Video On Demand, it is characterized in that front-end server delivers to TV programme on the television network by digital broadcast transmitting, the user uses the digital TV set-top box of band harddisk memory to receive and select the digital broadcasting of corresponding TV programme, selected TV programme to be buffered on the hard disk in the digital TV set-top box and watches for user's program request; Order method may further comprise the steps:
A, at first in the frequency space of television transmission, keep one and send channel as programme content to a plurality of channels of broadcasting in advance;
B, each broadcasts channel in advance and generates one and surpass the Digital Transmission passage that the normal digital TV broadcasts bandwidth, the bandwidth of this Digital Transmission passage is whole bandwidth of broadcasting channel in advance to the maximum, and front-end server reads and carries out program by this Digital Transmission passage behind the video frequency program file and broadcast in advance;
C, before program is broadcast in advance, formulate earlier program and broadcast sequence list in advance, and generate and broadcast EPG in advance and issue;
D, digital TV set-top box receive broadcasts EPG in advance, shows the selection for the user broadcasting listing in advance;
E, digital TV set-top box are according to choosing between the pre-sowing time of program, and automatic reception is broadcast the data broadcasting in the channel in advance and is saved in and carries out buffer memory in the hard disk, carry out program request for the user;
In case the f user selected program begins to receive, digital TV set-top box just is labeled as available programs to this program, and the prompting user can play.
2. the method that on the unidirectional electrical view, realizes the large scale digital TV Video On Demand according to claim 1, it is characterized in that, pre-sowing time, the broadcast rate of programme content was higher than normal play speed, so that programme content can arrive user side quickly, under the reliability situation that keeps transmission, utilize whole bandwidth of analog channel as far as possible.
3. the method that on the unidirectional electrical view, realizes the large scale digital TV Video On Demand according to claim 1, it is characterized in that, broadcasting the program sequential organization in advance, broadcast broadcasting on the channel in advance, under a plurality of situations of broadcasting channel in advance, broadcast program in advance in the different channel broadcasting of staggering, broadcast the channel and the arrangement of time of program in addition in advance and issue in the EPG mode.
4. the method that realizes the large scale digital TV Video On Demand on the unidirectional electrical view according to claim 1 is characterized in that, digital TV set-top box is broadcast the rendition list in advance according to what the user selected, broadcast in advance seek program among the EPG broadcast channel and time in advance.
5. the method that on the unidirectional electrical view, realizes the large scale digital TV Video On Demand according to claim 1, it is characterized in that, the top box of digital machine of realizing large scale digital TV Video On Demand method on the unidirectional electrical view adopts the double high-frequency head receiving system, one of them tuner is used to receive the normal digital TV, another tuner is used for program receiving and broadcasts in advance, when not televiewing, two tuner while program receivings are broadcast in advance.
6. the large scale digital TV Video On Demand method that on the unidirectional electrical view, realizes according to claim 5, it is characterized in that, adopt big capacity hard disk to come buffer memory to broadcast programme content in advance in the digital TV set-top box, when the hard disk free space was not enough, digital TV set-top box was then deleted the partial programme content automatically according to program holding time or broadcasting time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB2005101045369A CN100401774C (en) | 2005-11-18 | 2005-11-18 | Method for realizing large scale digital television video order programme in unidirectional television network |
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| CNB2005101045369A CN100401774C (en) | 2005-11-18 | 2005-11-18 | Method for realizing large scale digital television video order programme in unidirectional television network |
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| CN1767631A CN1767631A (en) | 2006-05-03 |
| CN100401774C true CN100401774C (en) | 2008-07-09 |
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Families Citing this family (6)
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| US20080229204A1 (en) * | 2007-03-12 | 2008-09-18 | Brian David Johnson | Apparatus, System And Method For The Navigation Of Aggregated Content Using Skipping And Content Metadata |
| KR101371016B1 (en) * | 2007-03-16 | 2014-03-10 | 삼성전자주식회사 | Method and apparatus for transmitting/receiving broadcasting information using reserved channels |
| KR101382135B1 (en) | 2007-04-11 | 2014-04-07 | 삼성전자주식회사 | Apparatus and method for playing back network contents |
| CN101588474B (en) * | 2009-06-30 | 2011-07-20 | 北京互信通科技有限公司 | Video on demand method and system |
| DE112015006257T5 (en) * | 2015-05-13 | 2017-11-16 | Google Inc. | SIMULATION OF A TELEPHONE CHANNEL, BROWSING ON-DEMAND CONTENT |
| CN106210862B (en) * | 2016-07-21 | 2020-06-30 | 青岛海信传媒网络技术有限公司 | Program information processing method and device |
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Assignee: Inspur Group Co., Ltd. Assignor: Langchao Electronic Information Industry Co., Ltd. Contract record no.: 2011370000163 Denomination of invention: Method for realizing large scale digital television video order programme in unidirectional television network Granted publication date: 20080709 License type: Exclusive License Open date: 20060503 Record date: 20110503 |