CN101212645A - Two-way information interaction method applied in broadcast TV system - Google Patents
Two-way information interaction method applied in broadcast TV system Download PDFInfo
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- CN101212645A CN101212645A CNA2006101716423A CN200610171642A CN101212645A CN 101212645 A CN101212645 A CN 101212645A CN A2006101716423 A CNA2006101716423 A CN A2006101716423A CN 200610171642 A CN200610171642 A CN 200610171642A CN 101212645 A CN101212645 A CN 101212645A
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Abstract
The invention relates to a method for interacting information in a bidirectional way in a broadcasting TV system, the data downlink process comprises the following steps: 1) a multicasting channel and a broadcasting channel are respectively defined; 2) an interactive flow process is carried out according to media content to be played; 3) the interactive information is marked according to concrete application and the media content; 4) the interactive information of a broadcasting type and a multicasting type is respectively packed, modulated and sent to a broadcasting transmission network; 5) a terminal system circularly waits for the interactive information in the broadcasting channel or the multicasting channel and demodulates the information from the channel according to different types of the information; then a coordinate position showing that the interactive information is given by a terminal interactive processing module; 6) the interactive information is displayed by an information displaying module in an appointed position. The method for interacting information in the bidirectional way in the broadcasting TV system makes full use of advantages of big downlink bandwidth and wide coverage of the broadcasting network and at the same time combines flexibility of a data network, thus realizing a wide-covering interactive function of personalized information.
Description
Technical field
The present invention relates to television network broadcast system field and cable television network system field, particularly a kind of two-way information interaction method that is applied in the radio data system.
Background technology
Traditional television network broadcast (broadcasting transmits net) system can be divided into two classes: radiated television network system and cable television network system.The territorial scope that the former covered depends on that TV station sends the polarised direction of employed frequency, power, antenna and use of omnidirectional or directional antenna or the like, the latter then adopts trunk optical fiber usually, inserts the mode of part coaxial cable in certain territorial scope, both by comparison, it is much bigger that the former territorial scope compares to the latter, but the latter has otherwise advantage, as the transmission signals quality better, can be at user's charge or the like.Cast out the factor outside the transmission technology, the transmission method of the two is similar basically, narrates so hereinafter be absorbed in cable TV network.
At the beginning of the cable TV network development is community antenna television system, and promptly CATV (Common AntennaTV) developed into said CAble TV afterwards.This system is owing to being to adopt the traditional broadcast television mode, so the direction of television content transmission is unidirectional, promptly from the TV station to the television set.To the nineties in 20th century, along with modulation technique, transmission technology and development of material technology, produced HFC (Hybrid Fiber Coaxial), then develop the CMTS+Cable Modem technology that data information on cable TV network, the cable TV network of using this technology has just formed the DTN of supporting bidirectional data transfers.In addition, present DTN also comprises computer network and communication network.
As shown in Figure 3, it is as follows to carry out at present the mode of playing programs on cable television network:
The information that will transmit in the media content playing process is made into the data flow that special time broadcasts by film titler, then this data flow is superposeed by modulator and media content, sends to cable television network by multiplexer afterwards; Terminal passes through to specific channel reception and gets final product, and terminal does not have the function of two-way interactive in this case.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, to transmit net and DTN combination based on the broadcasting of digital form, increase the signaling control that information transmits between two kinds of networks, thereby a kind of two-way information interaction method that is applied in the radio data system is provided.
To achieve the above object of the invention, the two-way information interaction method that is applied in the radio data system provided by the invention comprises data downstream process and feedback information process, it is characterized in that,
Described data downstream process comprises the steps:
1) in broadcast system, defines a multicast channel and a broadcast channel respectively;
2) in head-end system input medium content; Carrying out interaction flow according to media content to be broadcasted then handles, it is the process of working out the interaction flow between media play entity and the user that described interaction flow is handled, and comprises formulation time-information possible table and formulates request-reply relation between media play entity and the user;
3) head-end system indicates interactive information according to concrete application and media content, is divided into broadcast type, multicast type or unicast type; The interactive information of broadcast type and multicast type is sent to the information classification module; The interactive information of unicast type is directly sent to the destination by message pick-up/sending module through data transmission network;
4) information classification module is packed the interactive information of broadcast type and multicast type respectively, and broadcast message after will packing according to information type then and multicast information send to broadcast message modulation transmissions module and multicast information modulation transmissions module respectively and are sent to broadcasting and transmit network;
5) broadcast channel or the multicast channel circular wait interactive information of terminal system in broadcasting transmission network, if there is interactive information to arrive, difference according to information type, broadcast message demodulation module or multicast information demodulation module demodulate information from channel, be sent to terminal interaction flow processing module afterwards; Provide the coordinate position that shows interactive information by terminal interaction flow processing module then;
6) information display module receives information and this information is converted into the form that can supply the user to read from terminal interaction flow processing module, and the assigned address at display device shows interactive information then;
The step of described feedback information process is as follows:
7) terminal interaction flow processing module detects user's input at any time, user's operating interactive equipment, send after the select command, terminal interaction flow processing module is converted into request message with this select command, and finish the encapsulation of this request message, the request message after end message reception/sending module will encapsulate then sends to the head end application system by DTN.
In the technique scheme, in the described step 3), be broadcast message with the known information definition of all terminals, the known information of all terminals of described palpus comprises burst news, ballot information, takes turns and broadcast literal or display advertising.
In the technique scheme, in the described step 3), will must one group of known information definition of terminal be multicast information, one group of known information of terminal of described palpus comprises chat message in the group.
In the technique scheme, in the described step 3), be unicast info with the information definition of unit/terminal correspondence only, described unicast info comprises that head-end system is to the unit/terminal request responding.
In the technique scheme, in the described step 5), if interactive information is a unicast info, then receive this interactive information by end message reception/sending module, terminal system directly is connected by message pick-up/sending module with head-end system carries out two-way communication.
In the technique scheme, in the described step 7), described interactive device comprises keyboard, mouse or remote controller.
In traditional cable TV network, digital information is unidirectional, even adopted after the similar CMTS+Cable Modem mode, also is faced with problems at aspects such as bandwidth, QoS.Under present technical conditions, data network is only supported the broadcasting of limited extent from network performance, bandwidth and safety perspective in network, as directional broadcasting, local network broadcasting etc.The present invention has made full use of radio network and has had the advantage of big downlink bandwidth, broad covered area, and binding data network more flexible has simultaneously realized the customized information interactive function of wide coverage rate.
Description of drawings
Fig. 1 is the entity that information interacting method of the present invention relates to;
Fig. 2 is the two-way information interaction method flow chart that is applied in the radio data system of the present invention;
Fig. 3 is a kind of method flow diagram of playing caption information at cable TV on the net in the prior art.
Embodiment
The two-way information interaction method that is applied in the radio data system provided by the invention relates to three class entities: head-end system, terminal system and broadcasting transmit net/data transport network (as shown in Figure 1).
Wherein, head-end system comprises transmission information classification module, broadcast message modulation transmissions module, multicast information modulation transmissions module, message pick-up/sending module and interaction flow processing module; Head-end system both can be a special hardware, also can be the universal host machine or the server system of additional specific function hardware.
Wherein, terminal system refers to that assisting users finishes certain operation, enjoys the particular device or the program of special services, comprises broadcast message demodulation module, multicast information demodulation module, unicast info reception/sending module, information display module and interaction flow processing module.
Among the present invention broadcasting/cable TV transmission network network of supporting the one-way data transmission is called broadcasting and transmit net, computer network, communication network and the CMTS+Cable network etc. of supporting bidirectional data transfers are called DTN.Wherein, broadcasting/cable TV transmission network network refers to broadcast television transmissions network and cable TV transmission network network, can be wireless system, wired system (the full fiber optic transmission system that maybe may develop into as coaxial cable system, optical fiber+coaxial hybrid system).
Below in conjunction with the drawings and specific embodiments, the information interacting method that the broadcasting based on digital form provided by the invention is transmitted net and DTN is further elaborated.
Embodiment 1
As shown in Figure 1, the broadcasting based on the digital form provided by the invention information interacting method that transmits net and DTN comprises data downstream process and feedback information process.
The step of data downstream process is:
(1) in broadcast system, defines a multicast channel and a broadcast channel respectively;
(2) in head-end system input medium content; Carrying out interaction flow according to media content to be broadcasted then handles, it is the process of working out the interaction flow between media play entity and the user that described interaction flow is handled, and comprises the request-reply relation between formulation time-information possible table and media play entity and the user.
Wherein, time-the information possible table is meant that according to media content to be broadcasted formulate its corresponding interactive information, this interactive information is corresponding with the broadcast time of media content, thereby form one time-the information possible table.For example, when playing film, media play entity (as wired TV station) is according to media content (as " Curse of the Golden Flower "), the information (as movie director, leading role, film profile etc.) that provides spectators to pay close attention to, formation time-information possible table, and at the fixed time information is played out.
Request-reply relation between media play entity and the user is meant head-end system after receiving the request message that sends from terminal system, according to its request content, returns corresponding response message to terminal system.If terminal system request " director " relevant information, then head-end system will be directed information such as the recent film of taking, film titbit and be sent it back terminal in response; And for example in the group chatting pattern, head-end system is packaged into the multicast form with the information that terminal sends, and sends to the interior terminal of group by multicast channel.
(3) head-end system indicates media content according to concrete the application, is divided into broadcast type, multicast type or unicast type.(but reference table 1)
Table 1
| State | Type |
| Must the known information (as: burst news, ballot information, wheel are broadcast literal display advertising etc.) of all terminals | Broadcast type |
| Must one group of information (as organizing interior chat etc.) that terminal is known | The multicast type |
| The information of unit/terminal correspondence (as to unit/terminal request responding etc.) only | Unicast type |
The media content of broadcast type and multicast type is sent to the information classification module; The media content of unicast type is directly sent in the data transmission network by message pick-up/sending module.
Broadcasting among the present invention is meant the information propagation that all usefulness in shared channel/broadcast channel per family can be known.
Multicast is meant that the information that the user that belongs to specific cohort in logic just can receive propagates.
Clean culture is meant man-to-man information propagation.
(4) information classification module is packed the interactive information of broadcast type and multicast type, and indicates wherein signaling and data message.Data information transfer in radio network is followed certain data format, as the DVB form, the data form is expanded herein, make and comprise two fields in the data format: information type field and Spread type field, the information that indicates in the notebook data bag in the information type field is signaling or data message, and the media content that indicates in the notebook data bag in the Spread type field is broadcast type, multicast type or unicast type.This process is exactly the process of filling these two fields and overall data bag.Fill the overall data bag and refer to each field be filled, and interactive information is filled into process among the message net load according to data format.
(5) broadcast message after information classification module will be packed according to information type and multicast information send to broadcast message modulation transmissions module and multicast information modulation transmissions module respectively and are sent to broadcasting and transmit network.
(6) broadcast channel or the multicast channel circular wait information of terminal system in broadcasting transmission network, if there is information to arrive, according to the difference of information type, broadcast message demodulation module or multicast information demodulation module demodulate information from channel, are sent to terminal interaction flow processing module afterwards; Provide the coordinate position that shows interactive information by terminal interaction flow processing module then; (state of content broadcast is based on view content, shows that interactive information is auxilliary; Then to chat as an application-specific, what the user paid close attention to is chat content to the chat state.Therefore show that the position of interactive information and the big I of messagewindow adjust according to the present located different conditions)
If unicast info, then receive transmission information, and directly be connected with head end interaction flow processing module and carry out two-way communication by end message reception/sending module.
(7) information display module is converted into from terminal interaction flow processing module reception information and with this information and can supplies the user to read, and then in the assigned address display message of display device, carrying in this information can be for the interactive information of user's reading;
The step of feedback information process is as follows:
(8) terminal interaction flow processing module detects user's input at any time, user's operating interactive equipment (as keyboard, mouse or remote control), send after the select command, terminal interaction flow processing module is converted into request message with this select command, and finish the encapsulation of this request message, the request message after end message reception/sending module will encapsulate then sends to the head end application system by DTN.
(8.1) user, guesses by remote controller as the guess of match ball according to the prompting on the screen, as imports 5 goals of 5 expressions;
(8.2) terminal interaction flow processing module is packaged into packet with the information of user's input, and sends by terminal transmission/receiver module;
(8.3) head end interactive information stream becomes processing module to receive the information of user's input by head end transmission/receiver module, information according to the user is registered, statistics etc., and feed back according to the result, as the success of voting, then acknowledge message is sent by head end transmission/receiver module;
(8.4) if also have subsequent step in the interaction flow that pre-establishes, then terminal system receives transmission information by end message reception/sending module, directly carries out two-way communication with head end interaction flow processing module.So, head-end system and terminal system are then finished the closed-loop system of whole data interaction, can finish any interactive information behavior in the present bilateral network.
With a kind of example scenario information interactive process and method are described below.Example is: A cable TV station is at the column of first cannel broadcast similar " lucky 52 ", in playing process, require the terminal use to play an active part in, the mode that will participate in clicking in head-end system is encapsulated in the datagram with the super URL information that connects, multicast channel with the first channel phase association sends, watch the spectators' of the 1st channel terminal equipment to receive after the multicast information, demodulating information at first, show in the television screen bottom then, if spectators are interested, with remote controller, message processing module in the terminal equipment will send to head-end system by data channel after this information encapsulation, after transmission/receiver module in the head-end system is received information, send to message processing module, if the follow-up interactive information at this terminal equipment is arranged, later communication will transmit by data channel.
Among the present invention, the function that described interaction flow processing module can realize comprises: guess with lottery, vote, chat, video message, film information inquiry, advertisement is watched with lottery.
In traditional cable TV network, generally, digital information is unidirectional, be that information can send to all terminal systems from head-end system, even adopted after the similar CMTS+Cable Modem mode, also be faced with problems at aspects such as bandwidth, QoS, and will face same problem as described below on the data network after adopting this mode.Under present technical conditions, data network is from network performance, bandwidth and safety perspective, in network, only support the broadcasting of limited extent, as directional broadcasting, local network broadcasting etc., and there are a lot of problems aspect the multicast support equally, though in the eighties in 20th century, just having occurred multicast in the IP network realizes, but owing to lack the promotion of multicast application, so conventional router does not all provide multicast functionality, even multicast functionality is provided, on IP network, how to prevent the still existing problems of spreading unchecked of multicast on earth.The present invention utilize just television network broadcast/cable TV network and data network advantage separately (radio network have bulk information can send to simultaneously all/user's advantage in batches, data network has the advantage of the flexibility of information interaction/feedback), and then have complementary advantages, and the information interacting method that proposes.
Claims (6)
1. a two-way information interaction method that is applied in the radio data system comprises data downstream process and feedback information process, it is characterized in that,
Described data downstream process comprises the steps:
1) in broadcast system, defines a multicast channel and a broadcast channel respectively;
2) in head-end system input medium content; Carrying out interaction flow according to media content to be broadcasted then handles, it is the process of working out the interaction flow between media play entity and the user that described interaction flow is handled, and comprises formulation time-information possible table and formulates request-reply relation between media play entity and the user;
3) head-end system indicates interactive information according to concrete application and media content, is divided into broadcast type, multicast type or unicast type; The interactive information of broadcast type and multicast type is sent to the information classification module; The interactive information of unicast type is directly sent to the destination by message pick-up/sending module through data transmission network;
4) information classification module is packed the interactive information of broadcast type and multicast type respectively, and broadcast message after will packing according to information type then and multicast information send to broadcast message modulation transmissions module and multicast information modulation transmissions module respectively and are sent to broadcasting and transmit network;
5) broadcast channel or the multicast channel circular wait interactive information of terminal system in broadcasting transmission network, if there is interactive information to arrive, difference according to information type, broadcast message demodulation module or multicast information demodulation module demodulate information from channel, be sent to terminal interaction flow processing module afterwards; Provide the coordinate position that shows interactive information by terminal interaction flow processing module then;
6) information display module receives information and this information is converted into the form that can supply the user to read from terminal interaction flow processing module, and the assigned address at display device shows interactive information then;
The step of described feedback information process is as follows:
7) terminal interaction flow processing module detects user's input at any time, user's operating interactive equipment, send after the select command, terminal interaction flow processing module is converted into request message with this select command, and finish the encapsulation of this request message, the request message after end message reception/sending module will encapsulate then sends to the head end application system by DTN.
2. by the described two-way information interaction method that is applied in the radio data system of claim 1, it is characterized in that, in the described step 3), with the known information definition of all terminals be broadcast message, and the known information of all terminals of described palpus comprises burst news, ballot information, takes turns and broadcast literal or display advertising.
3. by the described two-way information interaction method that is applied in the radio data system of claim 1, it is characterized in that, in the described step 3), will must one group of known information definition of terminal be multicast information, one group of known information of terminal of described palpus comprises chat message in the group.
4. by the described two-way information interaction method that is applied in the radio data system of claim 1, it is characterized in that, in the described step 3), be unicast info with the information definition of unit/terminal correspondence only, described unicast info comprises that head-end system is to the unit/terminal request responding.
5. by the described two-way information interaction method that is applied in the radio data system of claim 1, it is characterized in that, in the described step 5), if interactive information is a unicast info, then receive this interactive information by end message reception/sending module, terminal system directly is connected by message pick-up/sending module with head-end system carries out two-way communication.
6. by the described two-way information interaction method that is applied in the radio data system of claim 1, it is characterized in that in the described step 7), described interactive device comprises keyboard, mouse or remote controller.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010017715A1 (en) * | 2008-08-14 | 2010-02-18 | 华为技术有限公司 | Method, system and device for realizing the reporting of media operation information |
| CN102123000A (en) * | 2010-12-17 | 2011-07-13 | 中国科学院声学研究所 | Method for smoothly upgrading digital terrestrial television broadcasting system to be of two-way |
| CN103814580A (en) * | 2011-09-22 | 2014-05-21 | 汤姆逊许可公司 | Method for providing interactive services |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1338871A (en) * | 2000-08-16 | 2002-03-06 | 北京华诺信息技术有限公司 | Method for multiplexing tuner in bidirectional cable system for cable TV |
| CN1207913C (en) * | 2002-08-30 | 2005-06-22 | 清华大学 | Interactive digital multimedia cable TV system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010017715A1 (en) * | 2008-08-14 | 2010-02-18 | 华为技术有限公司 | Method, system and device for realizing the reporting of media operation information |
| CN102123000A (en) * | 2010-12-17 | 2011-07-13 | 中国科学院声学研究所 | Method for smoothly upgrading digital terrestrial television broadcasting system to be of two-way |
| CN102123000B (en) * | 2010-12-17 | 2012-10-17 | 中国科学院声学研究所 | Method for smoothly upgrading digital terrestrial television broadcasting system to be of two-way |
| CN103814580A (en) * | 2011-09-22 | 2014-05-21 | 汤姆逊许可公司 | Method for providing interactive services |
| US10477256B2 (en) | 2011-09-22 | 2019-11-12 | Interdigital Madison Patent Holdings | Method for providing interactive services |
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