CN1604644A - A digital television broadcasting system having reservation and storage function - Google Patents
A digital television broadcasting system having reservation and storage function Download PDFInfo
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- CN1604644A CN1604644A CN 200410067830 CN200410067830A CN1604644A CN 1604644 A CN1604644 A CN 1604644A CN 200410067830 CN200410067830 CN 200410067830 CN 200410067830 A CN200410067830 A CN 200410067830A CN 1604644 A CN1604644 A CN 1604644A
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Abstract
This invention discloses a kind of digital TV broadcast system, which comprises broadcast center and several clients. Users can schedule the program that they want to watch. And the broadcast center broadcast the corresponding content according the scheduled information. The terminal client agency can automatically receive the corresponding video program, and save it in local memory for user to see.
Description
Technical field
The invention belongs to the digital TV Broadcasting Techniques field, be specifically related to a kind of digital television broadcasting system by the user's request broadcast video content.
Technical background
The digitlization process of television broadcasting (broadcasting as referred to herein comprises wireless mode broadcasting and the broadcasting of being undertaken by cable television network) is launched in high gear, and the interior digital television broadcasting coming years may replace traditional analog television broadcast and enter huge numbers of families.Yet along with the development of society, people have been not content with according to the listing of TV station and have watched TV programme.The program of liking seeing through regular meeting in our life has the thing of conflicting with my arrangement of time, and we wish and can watch us to want the program of seeing at odd times the individual.Therefore a kind of service that is called video request program is arisen at the historic moment.It can allow the user use the mode of program request, promptly promptly broadcasts, and the time of watching video frequency program is on top of in user's hand.
It is very tempting that video request program seems, but have problems on large-scale application.Because the content of each user's program request, the time of program request all is not quite similar, so server will be given independently bandwidth of each user's portion.When number of users increased, the also corresponding increase of bandwidth that server is required supposed that every required bandwidth of film is 1Mbps, has 10000 users just to need the bandwidth of 10Gbps so simultaneously when watching.If see the video of high definition, then required bandwidth is more.And because most people's life habit is close, can make flow extremely unequal, the people of possible program request on daytime seldom, and the program request meeting afterwards of 6,7 o'clock of evening increases greatly, cause the network bandwidth free time at ordinary times, and the flow of peak period is unable to cope with server.So realize that in one, in the large size city real-time true video request program almost is impossible,, in the utilization of network, also have waste greatly even can realize.According to 80/20 principle, promptly 80% user is concerned about is 20% content, and what a large number of users wished to watch may be same film.According to video on-demand system,, server resource is had too many difficulties to cope with even each user watches is that same film also all will independently occupy a bandwidth of server.
We can draw to draw a conclusion from the analysis of above-mentioned two kinds of systems:
1, the one-way of broadcast system has caused TV and Radio Service can't know that what program is user's needs.
2, broadcast system can not in time send to program the user that hope is watched, and the user must watch according to listing.
3, the content that video on-demand system can be required with the user in time sends to the user, but the limited bandwidth of competition between its user, and the phenomenon of " people is many, and net is stifled " is very serious.If Video service provider will provide a large number of users to watch simultaneously, its operation cost will be very high so.
Summary of the invention
At the characteristics of above-mentioned two kinds of systems, learn from other's strong points to offset one's weaknesses, the present invention proposes a kind of new digital television broadcasting system.Because the bidirectional rebuilding of cable television network makes the user upload information by cable television network, it is online that native system just is based upon this two-way cable TV.
Designed system of the present invention is made up of broadcasting center and plurality of client machine, and client computer directly is connected with user's video joint receiver; The broadcasting center asks collection module, video frequency program sending module to be formed by video frequency program storehouse, listing sending module, user, see shown in Figure 2 with the annexation of client computer, each client computer selects module, consumer premise information uploading module, video frequency program download module and receiver user to form by listing receiver module, user, and the annexation of itself and broadcasting center is seen shown in Figure 4.Be provided with three channels between broadcasting center and each client computer: video frequency program table download channels, channel is uploaded in user's request, video frequency program download channels (seeing shown in Figure 3).
The user downloads the rendition list that the broadcasting center had by the video frequency program download channels, according to the hobby of oneself, and the program of selecting hope to watch.User's selection information will be sent to the broadcasting center by uploading channel, and the broadcasting center is formulated different priority according to the popular degree of video frequency program to different programs, takes different broadcast strategy that program is sent by broadcast channel.Each client is stored in video frequency program in the local storage according to the demand that is proposed, and treats to watch when the user is free.The user can watch according to the time of oneself and want the program seen like this.Make full use of bandwidth resources simultaneously.
Native system has following characteristics:
1, system sends to the user with the rendition list that the broadcasting center had in advance, and the rendition list comprises the relevant information of program such as concise and to the point introduction and picture concerned, and watches the required cost of this program.
2, listing complete download when the user uses for the first time, what download later on is exactly increment information, comprises the additions and deletions information of program.No longer complete program downloading table.
3, the user will select own institute favorite program in listing, give the broadcasting center with these information uploadings.
4, the predetermined request submitted to according to a large number of users of broadcasting center, the order of scheduled program broadcasting broadcasts one by one.
5, client computer is according to predetermined information, and harvesting user favorite program is stored in the local storage in the data flow of broadcasting, and supplying at any time, the user watches.
6, because the memory capacity of client computer is limited, the program that the user finishes watching is deletion automatically just, with new content to be downloaded.
The advantage of system be following some:
1, the broadcasting center is according to user's predetermined information broadcast program, rather than arbitrarily broadcasting blindly, helps saving the broadcast system resource.
As long as 2, the user files a request, download after a while and just finish and can watch at any time, needn't watch program according to the timetable of TV station.
3, client computer can be worked in 24 hours incessantly, and proxy user is downloaded him and liked the ground program, the broadcasting center can 24 hours broadcast program incessantly, make full use of the resource of broadcast channel.
4, program can be adjusted according to most of users' hobby in the broadcasting center, buys the program copyright of watching number many, obtains better economic benefit.
Description of drawings
Fig. 1 has provided the overall framework of system.
Fig. 2 has provided the structure of broadcasting center.
Fig. 3 has provided the structure of transmission channel.
Fig. 4 has provided the structure of single client computer.
Fig. 5 has provided the flow process of system works.
Number in the figure: 1 is the broadcasting center, and 2 is client computer, and several are arranged; 3 is the video frequency program storehouse of broadcasting center, 4 is the program sending module, and 5 for the user asks collection module, and 6 is the video frequency program sending module, 7 is the listing download channels, 8 upload channel for user's request, and 9 is the video frequency program broadcast channel, and 10 is the listing receiver module of client computer, 11 select module for the user, 12 is consumer premise information uploading module, and 13 is the video frequency program download module, and 14 is the user.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in detail.
In order to realize said system, need following components to constitute:
1, broadcasting center
The broadcasting center comprises video frequency program storehouse, listing sending module, user and asks collection module and video frequency program sending module as shown in Figure 2, its function is to send listing, receive user's solicited message, arrange the video frequency program order of transmission and send video frequency program.
2, transmitted in both directions channel
Channel comprises that one is uploaded channel, listing download channels and video frequency program broadcast channel as shown in Figure 3.These three channels can be to combine by the mode of frequency division multiplexing in a coaxial line.
3, a plurality of client computer
Each client computer comprises a listing receiver module as shown in Figure 4, and the user selects module, consumer premise information uploading module, video frequency program download module.
Wherein, the listing sending module 4 of broadcasting center 1, listing lower channel 7 are connected with the listing receiver module of client computer 2; The video frequency program storehouse 3 of broadcasting center 1 is communicated with video sending module 6, and this video sending module 6 is connected with the video joint download module of client computer 2 by video frequency program transmitting channel 9; The user information collection module 5 of broadcasting center 1 is uploaded channel 8 by user's request and is connected with the consumer premise information uploading module of client computer 2; In the client computer 2, listing receiver module 10, user select module 11, video frequency program download module 13 to connect successively.
The step that the user watches video as shown in Figure 5.
When the user used the clients download video frequency program for the first time, he opened the client computer power supply, and client computer is connected to the broadcasting center automatically, downloaded the existing the rendition list in broadcasting center.The bandwidth of design listing download channels is 2Mbps, thus since in the listing a large amount of information be that literal and a spot of picture capacity can be very not big, promptly download after a few minutes to finish, the user can select a part of program as being scheduled in tabulation.For example the user likes watching new film, has just selected several films; If the user interestedly can select some video education courses to learning.User's selection under the client recording selects information to send to the broadcasting center user.User's legitimacy is at first judged in the broadcasting center, and promptly whether this user has the right to be scheduled to video frequency program, user's the request if ignore in user's unauthorized user (may not have to pay or other reasons because of the user) broadcasting center.If the user is a validated user, the broadcasting center is according to the temperature difference of each video frequency program, i.e. the different broadcast order of formulating video frequency program of the number of program request are broadcast out with video frequency program.The bandwidth of the video frequency program broadcast channel of design is 32Mbps.
Then: the data message of 32 * 60 * 60 * 24=2764800Mbit will be broadcast, and promptly the video data of 345.6GB can be sent (8bit=1Byte) in one day.Consider the expense of communication, also have every day the data about 300GB to be sent, if the user to watch have the DVD definition promptly the video frequency program of 500 lines adopt the compression of mpeg-4 form, 1 hour video frequency program is quite and the capacity of 1GB.System can broadcast 300 hours program every day in other words, is equivalent to 12.5 TV stations and constantly plays in 24 hours.And the broadcast of TV station watches basic nobody of a lot of periods, and the content that native system is play all has spectators to see.The utilance of channel improves greatly.
In order further to improve the utilance of channel, the rendition list is after complete download for the first time, and the information that changes is only downloaded in just no longer complete download later on.For example, the broadcasting center increases new video frequency program or deletes the video frequency program that some nobody watch, and these changed information will be sent to client computer, and client computer is adjusted tabulation automatically.
After a program download was finished, when the user can have time according to the arrangement of time of oneself, when watches.Also needn't earnestly wait for simultaneously, even certain day busy can not watching does not worry that the video frequency program of not watching will be stored in treats in the client computer that the user watches at one's leisure yet in order to watch a collection serial.Certainly system can bring in constant renewal in video frequency program, and the user can be by the predetermined new program of listing, and the user also can download new program synchronously when watching program, i.e. the download of program is transparent to the user, is finished by client computer active agency user.
Another benefit of system is exactly to take policy by content toll to the user, and promptly each video frequency program of watching of user can marked price, as 1 yuan of a collection TV play, and 2 yuan of films.The way of the Digital Television that breaks traditions monthly payment charge, the program that allows can be received more money, promotes the video display industry to make better program to adapt to user's demand.
Under current technical merit and network environment, realize that said system is fully feasible.The successful Application of system will make full use of idle Internet resources, enrich people's culture life.
Above the present invention is had been described in detail.It is apparent to those skilled in the art that the various modifications of making according to the present invention are all in claims of the present invention scope required for protection.
Claims (2)
1, a kind of digital television broadcasting system that has predetermined and memory function is characterized in that being made up of broadcasting center and plurality of client machine, and client computer directly is connected with user's video joint receiver; The broadcasting center asks collection module, video frequency program sending module to be formed by video frequency program storehouse, listing sending module, user; Each client computer selects module, consumer premise information uploading module, video frequency program download module and receiver user to form by listing receiver module, user; Be provided with three channels between broadcasting center and each client computer: channel, video frequency program download channels are uploaded in video frequency program table download channels, user's request.
2, digital television broadcasting system according to claim 1, listing sending module (4) the listing lower channel 7 that it is characterized in that broadcasting center (1) and the listing of client computer (2) connect to be feared mould and is connected; The video frequency program storehouse (3) of broadcasting center (1) is communicated with video sending module (6), and this video sending module (6) is connected with the video joint download module of client computer (2) by video frequency program transmitting channel (9); The user profile collection of letters module (5) of broadcasting center (1) is uploaded channel (8) by user's request and is connected with the consumer premise information uploading module of client computer (2); In the client computer (2), listing receiver module (10), user select module (11), video frequency program download module (13) to connect successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410067830 CN1604644A (en) | 2004-11-04 | 2004-11-04 | A digital television broadcasting system having reservation and storage function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200410067830 CN1604644A (en) | 2004-11-04 | 2004-11-04 | A digital television broadcasting system having reservation and storage function |
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| CN1604644A true CN1604644A (en) | 2005-04-06 |
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| CN 200410067830 Pending CN1604644A (en) | 2004-11-04 | 2004-11-04 | A digital television broadcasting system having reservation and storage function |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867783A (en) * | 2010-06-08 | 2010-10-20 | 深圳市多尼卡电子技术有限公司 | Distributed buffer type audio/video on-demand system in airplane and operation method thereof |
| WO2011072462A1 (en) * | 2009-12-18 | 2011-06-23 | 中兴通讯股份有限公司 | Method and set top box for acquiring program content |
| CN101635686B (en) * | 2009-08-19 | 2012-06-06 | 中兴通讯股份有限公司 | Resource management method |
| CN101681371B (en) * | 2007-05-15 | 2012-12-05 | Tivo有限公司 | Multimedia content search and recording scheduling system |
-
2004
- 2004-11-04 CN CN 200410067830 patent/CN1604644A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101681371B (en) * | 2007-05-15 | 2012-12-05 | Tivo有限公司 | Multimedia content search and recording scheduling system |
| CN101635686B (en) * | 2009-08-19 | 2012-06-06 | 中兴通讯股份有限公司 | Resource management method |
| WO2011072462A1 (en) * | 2009-12-18 | 2011-06-23 | 中兴通讯股份有限公司 | Method and set top box for acquiring program content |
| CN101867783A (en) * | 2010-06-08 | 2010-10-20 | 深圳市多尼卡电子技术有限公司 | Distributed buffer type audio/video on-demand system in airplane and operation method thereof |
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