CN1157949C - Cable television network based interactive television news transmitting and receiving system - Google Patents
Cable television network based interactive television news transmitting and receiving system Download PDFInfo
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- CN1157949C CN1157949C CNB001321277A CN00132127A CN1157949C CN 1157949 C CN1157949 C CN 1157949C CN B001321277 A CNB001321277 A CN B001321277A CN 00132127 A CN00132127 A CN 00132127A CN 1157949 C CN1157949 C CN 1157949C
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Abstract
The present invention belongs to the technical field of digital televisions and communication, which comprises a video server, an application server, a multiplexer, a scrambler, a conditional receiving server, a QAM modulator, an upper frequency converter, a set-top box, an independent calculation memory unit on the set-top box, a special program of the independent calculation memory unit, and a special program stored in the application server. The present invention provides an interactive mode news browse method well classified for users, and ensures that users can watch news after the news is broadcast for a long time and can select news in which the users take interest to watch.
Description
Technical field the invention belongs to Digital Television, communication technical field, specially referring to the technology that transmits digital television signal by cable TV network, mainly is the TV news that utilizes private information in MPEG one 2 standards and the information on services in the DVB standard to transmit number format.
The background technology TV is this century to one of invention of anthropogenic influence's maximum.Though its screen size and definition all far away from film, are watched easily owing to can be placed in the parlor, therefore seized most of filmgoer " attentiveness ".Certainly TV can be obtained the dominance, and what mainly lean on is not from film there " robbing spectators ", but has created a large amount of televiewers, and what lean on is the new function that film does not possess, and for example can provide latest news immediately.Even to this day, TV has been the element of people's daily life.Yet, the sudden emergence of Internet, by " on-demand service " and interaction capabilities, beginning is fought for the user intensely with radio and television in " parlor ".How is TV industry ready for the challenge? answer is just alternately.
The U.S. will eliminate simulated television with Digital Television in 2006, but TV station and user's enthusiasm is not high, because present TV is enough clear, why to spend money on Digital Television? the portion investigation of the U.S. shows, have only 8% spectators to want to see Digital Television, but have 59% spectators to want to have the service of interaction capabilities and Internet combination.So-called mutual, briefly be exactly spectators can according to oneself need selection, customization, program request and participation business, rather than can only select channel, accept the fixedly arrangement of TV station passively.Therefore, in the back DTV epoch, Digital Television (comprising high definition digital television) will be a basic service, and a large amount of new application (or claim professional, service) will be by the television set huge numbers of families that crowd into.
At present, mainly exist two big standards at digital TV field: DVB (digital video broadcasting), the ATSC (Advanced Television Systems Committee) of the U.S. in Europe.This two big camp has also launched sharp fight in the data field of radio and television after the digital television standard success.The digital video broadcast-satellite of DVB (DVB-S) has almost become global standards (comprising the North America), has also obtained the acceptance of overwhelming majority of countries towards the DVB-C standard of cable TV.The received terrestrial digital broadcasting aspect is ATSC and DVB competition focal point, and countries such as most European countries, Australia, Singapore and India announce to adopt the digital terrestrial broadcast standards DVB-T of DVB in succession.The U.S., Canada and Korea S, China Taiwan Province, Argentina then announce to adopt ATSC DTV standard in succession.Generally speaking, the strategy of DVB is more suitable for the national conditions of China, i.e. the starting point of TV development should be placed on the Digital Television, at first the development standard definition television.Further, from the primary demand of people to TV, definition is not most important, and what spectators needed is abundanter program, how better information service.
About " digit broadcasting system of TV, voice and data business: hardwood structure, chnnel coding and the modulation of cable television system (ETS 300 429) ", be called for short DVB-C in the digital video-frequency broadcast standard (DVB).The DVB system uses cladding to use synchronization structure, and the compatibility of the television services of the coding standard (ISO13818 is called for short MPEG-2) based on motion video and related sound is provided.
The mode of DVB-C as shown in Figure 1.Transmission of one line meets the data flow of Moving Picture Experts Group-2 in each physical channel in each cable TV network, i.e. transport stream (being called for short TS stream).Can compound one or more TV programme in each transport stream.Among the MPEG-2, each road TV programme is called as program (Program), and is referred to as service (Service) in DVB.May comprise elementary streams such as one or more video flowings, audio stream and private data stream in each program stream (service).Each circuit-switched data flows all by a unique identifier, the label that is referred to as to divide into groups (being called for short PID).
The components of system as directed of MPEG-2 (ISO/IEC13818-1) has stipulated to comprise in the transport stream the distinctive descriptive information of program (being called for short PSI).DVB expands PSI, is called information on services (being called for short SI), for the user provides programme information, and helps the Integrated Receive Decoder received signal, realizes configuration automatically.
PSI and SI transmit in the mode of table (Table), and each table all is made up of plurality of segments (Section).During transmission, Section directly is inserted in the transport stream.The PID of PSI and SI has the grouping label of specific assigned.PSI and SI press certain speed repeated broadcast, guarantee that user's access is at any time watched.
PSI is used for being provided with automatically and the guiding decoder is decoded, and is made of four kinds of tables:
(1) Program Association Table (PAT): what programs are used for describing code stream has, the PID of its corresponding Program Map Table (PMT), and the PID of network information table;
(2) Program Map Table (PMT): describe this program and form, the PID of each code stream by what code streams;
(3) CAT Conditional Access Table (CAT): the PID that describes authorized user message (EMM);
(4) network information table (NIT): describe the situation and the major parameter of program belonging network, DVB is to the expansion to some extent of NIT table;
SI has added 9 kinds of tables on this basis, wherein has 4 kinds of tables more commonly used:
(1) services set contingency table (BAT): the information of services set is provided, mainly comprises the service of title and this services set of composition of services set;
(2) service describing table (SDT): described the information of each service in the system, mainly comprised the title of service, provider's title of service;
(3) Event Information Table (EIT): information such as the title of description program, start and end time, program description;
(4) Time of Day table (TDT): descriptive system now and the date
Can encrypted transmission except Event Information Table, other table is encrypted transmission not all.
Of particular note, the useful information that comprises in all tables all is the form appearance with descriptor (Descriptor).
Pass-along message is one of TV the cause for the success fast, and news is a good attraction.It is exactly because news is done that the last news of Internet can attract a main cause of a large number of users.But at present TV station does things in his own way mostly, does not have a family that comparison authority's news channel is provided, even and provide, the user watches also very inconvenient.People often speak of personalization now, that is to say that people only are concerned about and own relevant information.So how making the user locate the news of oneself wanting fast in a large amount of news also is a problem that is worth discussion.
The characteristics of existing TV news are the acceptance that spectators can only be passive, the news that both can't select oneself to be concerned about is watched, also can't select to teleview time of news, for example " news hookup " of the Chinese Central Television (CCTV) at night 7:00 watch, " reporting now " can only watch at 9:00, and in " news hookup ", also can there be various types of other news, the news of for example physical culture aspect, political news, the news of economic aspect, external news, domestic news, different spectators can be concerned about the news of different aspect, but In the view of at present, the news that existing technology does not also support spectators to select oneself to be concerned about when watching such as programs such as " news hookups " is watched.Chief reason is that anolog TV signals are adopted in the transmission of TV signal, and the bandwidth ratio that each channel takies is bigger, and can't support spectators' mutual request.
Summary of the invention the objective of the invention is for overcoming existing television system spectators necessary set time when watching news program, the weak point of the mode of watching of immobilized substance, a kind of interactive television news editor based on cable television network is proposed, broadcast and display packing, mainly defer in the digital video-frequency broadcast standard (DVB) about " TV; the DVB-C of the digit broadcasting system of voice and data business and MPEG-2 coding standard ", can be the user provides a kind of news of interactive mode of process good classification to browse means, the regularly artificial or selected parts in real time to the TV news process, layout, according to different requirements, pass through picture and text, picture and text add audio frequency, various ways such as video are parallel to be broadcasted, additional simultaneously news choice menus, make the user in one period long period after news is broadcasted, watch news, and the news that can select oneself to be concerned about is watched.
The inventive method based on the interactive television news of cable television network send and receiving system, comprise video server, application server, multiplexer, scrambler, Conditional Access server, QAM modulator, upconverter, set-top box, and independently calculating storaging unit and special procedure thereof on the set-top box, the special procedure of storing in the application server; Said application server is connected with video server by local area network (LAN), said video server links to each other with multiplexer by Cable, this multiplexer links to each other with application server and scrambler respectively, this scrambler links to each other with the Conditional Access server, be connected with upconverter with the QAM modulator by the ASI interface simultaneously, it is online that this upconverter sends to cable TV to signal by radio frequency interface again; Said set-top box is connected with cable television network by radio frequency interface, and is connected with television set by common AV interface; Wherein TV news editor, broadcast may further comprise the steps:
1) at first records resource by the application server application;
2) beginning news by video server then records;
3) whenever recorded the SI information that the news item segment is just edited this news segment;
4) judge whether all news segments are all recorded and finish, then turn round 2 if not); If then carry out step 5);
5) the broadcast strategy by application server configuration news;
6) beginning to start news by video server, multiplexer, scrambler, Conditional Access server, QAM modulator, upconverter then broadcasts, judge whether to finish to broadcast news, continue if desired to broadcast, then judging whether also needs to edit news, the revolution step 5) is proceeded after then updating news if desired, if do not need editor then directly turn round step 5) and continue, until the news close of transmission.
Wherein the TV news demonstration may further comprise the steps:
1) set-top box is at first tuning according to frequency information, obtains transport stream;
2) from transport stream, seek pat table then, find the grouping label of the PMT of program;
3) and then find pmt table, extract the grouping label of the data flow that this program comprises, grouping label, start and end time, type and the program level information of private data passage;
4) from transport stream, seek the SDT table, extract the title and the provider of service;
5) search the privately owned descriptor that has just obtained, obtain the classified information of news and stream composition, news section name, provider, description, affiliated classification, duration, the related news of each news segmentation;
6) set-top box receives user's remote controller input, determines the news category that the user need watch;
7) read information on the IC-card,, then from transport stream, extract and look audio frequency accordingly and play according to corresponding SDT table if allow the user to watch news.
The present invention has following beneficial effect:
Owing to can after the fixedly broadcast time of news program, still can watch news program, will improve the audience ratings of news program greatly, made things convenient for watching of spectators; In addition, because spectators can select to watch according to the own news of being concerned about, improve the efficient that spectators watch news greatly, promoted the mode of watching news of the effective circulation and the personalization of information.The broadcasting efficient of news also can improve by native system in TV station, has promoted the manufacturing process of news program.
Description of drawings
Fig. 1 is the mode block diagram of DVB-C.
Fig. 2 is a main assembly schematic diagram of the present invention.
Fig. 3 is TV news editor of the present invention and broadcasting method embodiment block diagram.
Fig. 4 is a TV news display packing embodiment block diagram of the present invention.
Embodiment a kind of interactive television news editor based on cable television network of the present invention, broadcast and display packing embodiment are described with reference to the accompanying drawings as follows:
The interactive television news transmission of cable television network of the present invention and receiving system embodiment main assembly structure are as shown in Figure 2, comprise video server, application server, multiplexer, scrambler, Conditional Access server, QAM modulator, upconverter, set-top box, and independently calculating storaging unit and special procedure thereof on the set-top box, the special procedure of storing in the application server; Said application server is connected with video server by local area network (LAN), said video server links to each other with multiplexer by Cable, this multiplexer links to each other with application server and scrambler respectively, this scrambler links to each other with the Conditional Access server, be connected with upconverter with the QAM modulator by the ASI interface simultaneously, it is online that this upconverter sends to cable TV to signal by radio frequency interface again; Said set-top box is connected with cable television network by radio frequency interface, and is connected with television set by common AV interface.
Independently calculating storaging unit on the set-top box of present embodiment can be commercial IC-card.Application server can adopt general calculation machine server and software, and what present embodiment adopted is with the server hardware of square company and the Windows of Microsoft.Application server is connected with video server by local area network (LAN), the video server of present embodiment adopts the video server of EVS company, its function is to preserve anolog TV signals with number format, and according to broadcast time of formulating and order the vision signal of number format is broadcasted.Video server links to each other with multiplexer by Cable.The multiplexer of present embodiment adopts the equipment of U.S. DIVICOM company, is responsible for the TS of a plurality of MPEG-2 of meeting standards is flowed the compound TS stream that becomes.The scrambler of present embodiment adopts the DBN-26 equipment of U.S. SkyStream company, and its function is the scrambling that corresponding TS stream is met the DVB standard according to the control of Conditional Access server.Scrambler is connected with upconverter with the QAM modulator by the ASI interface, and the QAM modulator of present embodiment and upconverter adopt the DVB-7500 equipment of Hirschmann company.It is online that upconverter sends to cable TV to signal by radio frequency interface again.In the family, set-top box is connected with cable television network by radio frequency interface, receive the news of broadcasting, and determine whether that by the storage control information of preserving in special procedure in the set-top box and the IC-card news is flowed to television set to be shown, receive the user simultaneously by the mutual request that remote controller sends, play desired TV signal.The present embodiment set-top box adopts the ST5500 scheme of French SGS THOMOSOM company, and is connected with television set by common AV interface.
TV news editor of the present invention and broadcasting method embodiment may further comprise the steps as shown in Figure 3:
Program at first applies for recording resource, begins to record according to the news frequency range then, has whenever recorded the SI information that the news item segment is just edited this news segment, promptly mainly is editor's Event Information Table (EIT).When all news segments all record finish after, then dispose the broadcast strategy of news, i.e. news time interval of broadcasting, the number of times of broadcast, used bandwidth etc.Begin to start news then and broadcast, when news finishes, continue if desired to broadcast, then judging whether also needs to edit news, and then updates news if desired, if do not need then enter configuration news to broadcast the strategy stage, until the news close of transmission.
TV news display packing embodiment of the present invention may further comprise the steps as shown in Figure 4:
At first set-top box is tuning according to frequency information, obtain transport stream, from transport stream, seek pat table then, find the grouping label of the PMT of program, and then find pmt table, extract the grouping label of the data flow that this program comprises, the information such as grouping label, start and end time, type and program level of private data passage; From transport stream, seek the SDT table, extract the title and the provider of service.Search the privately owned descriptor that has just obtained, obtain the stream composition, news section name, provider, description, affiliated classification, duration, related news of the classified information of news and each news segmentation etc.Receiving under the above-mentioned relevant situation of programme information, receive user's remote controller input, determine the news category that the user need watch, read the information on the IC-card, if allow the user to watch news, then look audio frequency accordingly and play according to SDT table extraction from transport stream accordingly.
Claims (2)
1, a kind of interactive television news editor, broadcast and display packing based on cable television network, based on the interactive television news of cable television network send and receiving system, comprise video server, application server, multiplexer, scrambler, Conditional Access server, QAM modulator, upconverter, set-top box, and independently calculating storaging unit and special procedure thereof on the set-top box, the special procedure of storing in the application server; Said application server is connected with video server by local area network (LAN), said video server links to each other with multiplexer by Cable, this multiplexer links to each other with application server and scrambler respectively, this scrambler links to each other with the Conditional Access server, be connected with upconverter with the QAM modulator by the ASI interface simultaneously, it is online that this upconverter sends to cable TV to signal by radio frequency interface again; Said set-top box is connected with cable television network by radio frequency interface, and is connected with television set by common AV interface, and wherein TV news editor, broadcast may further comprise the steps:
1) at first records resource by the application server application;
2) beginning news by video server then records;
3) whenever recorded the SI information that the news item segment is just edited this news segment;
4) judge whether all news segments are all recorded and finish, then turn round 2 if not); If then carry out step 5);
5) the broadcast strategy by application server configuration news;
6) beginning to start news by video server, multiplexer, scrambler, Conditional Access server, QAM modulator, upconverter then broadcasts, judge whether to finish to broadcast news, continue if desired to broadcast, then judging whether also needs to edit news, the revolution step 5) is proceeded after then updating news if desired, if do not need editor then directly turn round step 5) and continue, until the news close of transmission.
2, interactive television news editor, broadcast and display packing based on cable television network as claimed in claim 1, wherein the TV news demonstration may further comprise the steps:
1) set-top box is at first tuning according to frequency information, obtains transport stream;
2) from transport stream, seek pat table then, find the grouping label of the PMT of program;
3) and then find pmt table, extract the grouping label of the data flow that this program comprises, grouping label, start and end time, type and the program level information of private data passage;
4) from transport stream, seek the SDT table, extract the title and the provider of service;
5) search the privately owned descriptor that has just obtained, obtain the classified information of news and stream composition, news section name, provider, description, affiliated classification, duration, the related news of each news segmentation;
6) set-top box receives user's remote controller input, determines the news category that the user need watch;
7) read information on the IC-card,, then from transport stream, extract and look audio frequency accordingly and play according to corresponding SDT table if allow the user to watch news.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001321277A CN1157949C (en) | 2000-12-15 | 2000-12-15 | Cable television network based interactive television news transmitting and receiving system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001321277A CN1157949C (en) | 2000-12-15 | 2000-12-15 | Cable television network based interactive television news transmitting and receiving system |
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| CN1359236A CN1359236A (en) | 2002-07-17 |
| CN1157949C true CN1157949C (en) | 2004-07-14 |
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| CNB001321277A Expired - Fee Related CN1157949C (en) | 2000-12-15 | 2000-12-15 | Cable television network based interactive television news transmitting and receiving system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1914102B (en) * | 2004-12-02 | 2010-05-12 | 村田机械株式会社 | Automatic warehouse |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100401774C (en) * | 2005-11-18 | 2008-07-09 | 浪潮电子信息产业股份有限公司 | Method for realizing large scale digital television video order programme in unidirectional television network |
| CN101316349B (en) * | 2007-05-31 | 2011-08-31 | 商埃曲网络软件（上海）有限公司 | Interactive information processing system and method for digital television |
| CN101335882B (en) * | 2007-05-31 | 2011-08-31 | 商埃曲网络软件（上海）有限公司 | Interactive digital television information production center platform system |
| CN101202881B (en) * | 2007-07-04 | 2011-08-10 | 深圳市同洲电子股份有限公司 | Method, server and system for voting of digital television |
| CN102306079A (en) * | 2011-08-15 | 2012-01-04 | 深圳创维数字技术股份有限公司 | Screen display method, digital television receiving terminal and digital television system |
| TWI526059B (en) * | 2011-09-09 | 2016-03-11 | 中華電信股份有限公司 | An apparatus and method for selecting clips |
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2000
- 2000-12-15 CN CNB001321277A patent/CN1157949C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1914102B (en) * | 2004-12-02 | 2010-05-12 | 村田机械株式会社 | Automatic warehouse |
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Address after: Room 402, block B, Beijing hi tech building, 5-2 East Road, Beijing, Haidian District Patentee after: Beijing Novel-SuperTV Digital TV Technology Co., Ltd. Address before: Room 402, block B, Beijing hi tech building, 5-2 East Road, Beijing, Haidian District Patentee before: Beijing Novel-Tongfang Digital TV Technology Co., Ltd. |
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