CN102647619A - Information service system and method based on digital television system or IPTV (Internet Protocol television) system - Google Patents
Information service system and method based on digital television system or IPTV (Internet Protocol television) system Download PDFInfo
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Abstract
The invention relates to an information service system and an information service method based on a digital television system or an IPTV (Internet Protocol television) system. The system comprises an information providing device, an information sending device and an information receiving device, wherein the information providing device is a server used for providing a TS (transport stream) packet which prepares for replacing an empty packet and carries service information, the information sending device is connected with the information providing device, is used for replacing a TS empty packet in a digital television program stream or a TS empty packet in a digital television channel with the TS packet carrying the service information provided by the information providing device and carrying out data broadcasting, and the information receiving device is used for receiving the service information provided by the information providing device, thereby enabling users to inquire the service information. Through the system and the method, shared bandwidth, unified transmission and differentiated service are realized, and the intensification and the energy conservation of information spreading and service are realized.
Description
Technical field
The present invention relates to areas of information technology, particularly relate to a kind of information service system and method based on digital television system or IPTV system.
Background technology
Below be some explanations of nouns in this area, its scope of application only limits to the present invention:
IPTV: full name is Internet Protocol Television, is meant the television broadcasting service based on the IP agreement, also is IPTV.
TS: full name is Transport Stream, i.e. transmission code stream.
PAT: full name is Program Association Table, i.e. Program Association Table.
CAT: full name is Conditional Access Table, i.e. conditional access table.
PID: full name is Packet Identification, i.e. " bag identifier ".
SI: full name is Service Information, i.e. information on services.
PSI: full name is Program Specific Information, i.e. Program Specific Information, and the PSI table includes Program Association Table (PAT) and conditional access table (CAT).
The present invention is based on that the digital television program that meets the national digital television standard is made, storage, broadcast, emission or transmission and receive on, and the present invention is based on that digital television program under the MPEG-2 TS over IP mode of IPTV system is made, storage, transmission and receive on.
The present invention utilizes the sky bag in digital television program stream or the digital-TV channel to load and transmitting service information.
The present invention utilizes the sky bag in TV programme under the MPEG-2 TS over IP mode of IPTV system or the television channel to load and transmitting service information.
Information service system and method based on digital television system or IPTV system in the prior art fail to utilize well empty bag to carry out message transmission, and cost is high, energy consumption is high, has wasted the part resource.The objective of the invention is to realize the information service of low-carbon (LC), green, environmental protection; Realize low input, the low cost of information service; The present invention should pay attention to the novelty of technology; More to pursue the actual effect of technology in energy conservation, environmental protection,, promote human sustainable development to reach in the information service that economizes on resources, protects on the environmental basis.
Summary of the invention
Technical problem to be solved by this invention provides a kind of information service system and method based on digital television system or IPTV system, is used for solving the problem that the information service cost is high, energy consumption is high of present technology.
The technical scheme that the present invention solves the problems of the technologies described above is following: a kind of information service system based on digital television system or IPTV system comprises information provider unit, information transmitting apparatus and information receiver; Said information provider unit comes down to a kind of server; Be used to provide the digital TV TS bag that is loaded with information on services of preparing the empty bag of replacement digital TV TS; And said information provider unit links to each other with said information transmitting apparatus through communication modes such as local area network (LAN), the Internet, private line of communication; Said information transmitting apparatus is used for the empty bag of TS in empty bag of the TS of digital television program stream or the digital-TV channel is replaced with the TS bag that is loaded with information on services that is provided by said information provider unit, the line data of going forward side by side broadcasting; Said information receiver is used to receive the information on services that said information transmitting apparatus provides, and realizes the inquiry of user to information on services.
On the basis of technique scheme, the present invention can also do following improvement.
Further, said information provider unit can be integrated in the said information transmitting apparatus, as a sub-module of said information transmitting apparatus.Information transmitting apparatus under this mode has the function of said information provider unit, also is applicable in the technical scheme hereinafter described simultaneously.
Further, said information transmitting apparatus adopts empty bag replacement software module, has the arbitrary device in the multiplexer of empty bag replacement function, the scrambler with empty bag replacement function, the modulator with empty bag replacement function or the empty bag replacement of the transmission device; Said information transmitting apparatus can also adopt the integrating device with empty bag replacement function; Said integrating device can be combined by any two or three devices in multiplexer, scrambler and the modulator, such as the multiplexing scrambler with empty bag replacement function, multiplexing modulator, multiplexing scrambling modulator etc.
Further, said empty bag replacement software module is used for the TV programme system to digital television system or IPTV system, the sky bag of broadcasting in the digital TV TS bag of server or TV programme memory device replaces with the TS bag that is loaded with information on services that said information provider unit provides;
Said multiplexer with empty bag replacement function comprises program code multiplexing device with empty bag replacement function and the system-level multiplexer with empty bag replacement function;
Said program code multiplexing device with empty bag replacement function is used to expand the empty machine contracting system of the filling of former program code multiplexing device/insert; Specifically comprise: when code multiplexing needs the empty bag of filling/insertion; Empty bag can be filled/insert, the TS bag that is loaded with information on services that said information provider unit provides can be filled/insert again;
Said system-level multiplexer with empty bag replacement function is used to expand the empty machine contracting system of the filling of original system level multiplexer/insert; Specifically comprise: when multiplexing code stream needs the empty bag of filling/insertion; Can fill/insert empty bag; Can fill/insert the TS bag that is loaded with information on services that said information provider unit provides again, and the sky bag that can will be input to said multiplexer replaces with the TS bag that is loaded with information on services that said information provider unit provides;
Said scrambler is used for the sky bag that also exists after the scrambling of input TV programme is replaced with the TS bag that is loaded with information on services that said information provider unit provides;
Said modulator with empty bag replacement function is used to expand the empty machine contracting system of the filling of former digital television modulator/insert; Specifically comprise: when input code flow needs the empty bag of filling/insertion; Can fill/insert empty bag; Can fill/insert the TS bag that is loaded with information on services that said information provider unit provides again, and the sky bag that can will be input to said modulator replaces with the TS bag that is loaded with information on services that said information provider unit provides;
The empty bag replacement of said transmission device can be as autonomous device, also can be as the submodule of the Information Technology Equipment on the digital-TV channel; The empty bag replacement of said transmission device is used for the sky bag of TS stream on the digital-TV channel is replaced with the TS bag that is loaded with information on services that said information provider unit provides; The empty bag replacement of said transmission device also is used for when TS stream needs the empty bag of filling/insertion, can filling/insert empty bag, can realize filling/inserting the TS bag that is loaded with information on services that said information provider unit provides again.
Said integrating device with empty bag replacement function is used for exporting the sky bag that also exists when TS flows to said integrating device and replaces with the TS bag that is loaded with information on services that said information provider unit provides;
Further, the empty bag replacement of said transmission device can be serially connected in whole before front end signal input to the said information receiver of said digital television system or said IPTV system and be loaded with the optional position on the channel of digital TV TS stream.
For example, the empty bag replacement of said transmission device can be serially connected in after satellite digital tv receiver, ground digital television receiver, cable digital TV receiver, data communication adapter, playing programs server, the program code multiplexing device.
And for example, the empty bag replacement of said transmission device can be serially connected between system multiplexer or scrambler and the modulator.
And for example, the empty bag replacement of said transmission device can be serially connected in after modulator, the data communication adapter.
Further; Said information receiver is a kind of terminal equipment, and said terminal equipment comprises DTV STB, digital TV integrated machine, IPTV TV set-top box, IPTV TV all-in-one, intelligent television STB, intelligent television all-in-one, mobile phone, panel computer, notebook computer and computer;
Said information receiver can regularly start the information on services that the said information transmitting apparatus of reception provides, and can finish receiving back realization shutdown automatically.
Further; Said information service system can adopt the object carousel standard in the data broadcasting standard in the national digital television system that the information on services that loads at the empty bag of TS place and transmit is carried out information on services classification, structure information on services structure and encapsulated delivery information on services; And be organized as object to information on services and supply the information receiver retrieval, receive, said object comprises catalogue, file and data.
Further, said information service system adopts the data broadcasting standard in the national digital television system that the information on services that loads at the empty bag of TS place and transmit is constructed, encapsulated and transmits, and said data broadcasting standard comprises:
The data pipe standard is supported in the digital television system simple asynchronous data broadcast service end to end, and data are directly transmitted in the load of TS bag, see GB/T 17975.1;
The data flow standard: support data-oriented stream in the digital television system, end to end, and the data broadcast service of asynchronous system transmission, data are transmitted in the bag of the basic stream (PES) of packing, and GB/T 17975.1 is seen in the PES definition.
Multi-protocols encapsulation standard: the data broadcast service of supporting to offer with the data in the communication protocol in the digital television system transmission; Follow the transmission of multi-protocols encapsulation specification data newspaper and be encapsulated in datagram in the DSM-CC section, see ISO/IEC 13818-6, the privately owned paragraph format of this and GB/T17975.1 is compatible.
Data carousel standard: the data broadcast service of supporting periodic data module transmission in the digital television system; These data modules are known dimensions, and can in data carousel, upgrade in time, add or remove.If service needed, these modules can also be formed the module crowd, and it is preeminent that module crowd also can form module.Follow in the DSM-CC data carousel that data carousel specification data broadcasting defines in DSM-CC and transmit.
Further; Said information service system can support that the use empty package carries, transmitting service information; Empty bag packet header is according to the national standard setting; And whether undefined field in the sky packet header loaded the sign of information on services as the sky bag, the sign that whether loads information on services perhaps is set in sky bag payload.
Further, said information service system can realize that information on services to issue compresses, encryption and check code.In addition; Said information service system can be sent the information on services of some mechanisms; Each mechanism all is assigned unique code name/code/sign, also can classify/divide the information on services that sends according to certain standard, and each information category all is assigned unique code name/code/sign.
A kind of information service method based on digital television system or IPTV system may further comprise the steps:
Step 1: the TS that is loaded with information on services is provided bag through information provider unit;
Step 2: sky bag in the said digital television program stream or the sky bag in the digital-TV channel are replaced with the TS bag that is loaded with information on services described in the step 1 through information transmitting apparatus;
Step 3: receive the information on services that said information transmitting apparatus provides through information receiver, realize the inquiry of user to information on services.
Further, the information provider unit in the said step 1 use the PSI/SI table to the TS bag that is loaded with information on services describe, tissue and index.When the TS that is loaded with information on services that sky bag in then further through information transmitting apparatus digital television program being flowed or the sky bag in the digital-TV channel replace with said information provider unit to be provided wraps, the concrete following steps of carrying out of said step 2:
Step 2A1: distinguish whether the sky bag that need be replaced has been loaded with information on services,, then abandon replacing or replacing again if be loaded with information on services;
Step 2A2: detect in the said information transmitting apparatus already present PID number or be input to said information transmitting apparatus PID number; And be that TS bag in the said information provider unit is set up PID replay firing table according to testing result, change removing PID number that all TS that provided by said information provider unit the PAT/CAT/SI table wrap according to PID replay firing table again.
Step 2A3: the former PSI/SI table that extracts in the said information transmitting apparatus is analyzed; Size based on pat table in the said information provider unit is expanded the pat table in the said information transmitting apparatus; PID number of all program_number-PID centerings of the pat table of said information provider unit after the conversion of PID replay firing table, add in the pat table in the said information transmitting apparatus of expansion and carry out verification;
Step 2A4: the TS bag that is loaded with information on services that said information transmitting apparatus provides with said information provider unit in order circularly replaces the sky bag in the said information transmitting apparatus, perhaps needs to fill/insert the TS bag that is loaded with information on services that the empty said information provider unit of place filling/insertion that wraps provides originally.
Further, the information provider unit in the said step 1 uses and identifies the TS bag that loads information on services for privately owned PID number of prior regulation.When the TS that is loaded with information on services that sky bag in then further through information transmitting apparatus digital television program being flowed or the sky bag in the digital-TV channel replace with said information provider unit to be provided wraps, the concrete following steps of carrying out of said step 2:
Step 2B1: distinguish whether the sky bag that need be replaced has been loaded with information on services,, then abandon replacing or replacing again if be loaded with information on services;
Step 2B2: detect in the said information transmitting apparatus already present PID number or be input to said information transmitting apparatus PID number; And judge and whether to clash wherein PID number with privately owned PID number of said prior regulation; Report an error if clash then; And abandon the replacement work of information on services, perhaps change privately owned PID number and detect again;
Step 2B3: the TS bag that is loaded with information on services that provides with said information provider unit circularly in order replaces the sky bag in the said information transmitting apparatus, perhaps needs to fill/insert the TS bag that is loaded with information on services that the empty said information provider unit of place filling/insertion that wraps provides originally.
Further, the information provider unit in the said step 1 uses empty bag to identify the TS bag of loading information on services for PID number.When the TS that is loaded with information on services that sky bag in then further through information transmitting apparatus digital television program being flowed or the sky bag in the digital-TV channel replace with said information provider unit to be provided wraps, the concrete following steps of carrying out of said step 2:
Step 2C1: when the empty bag of replacement, distinguish whether the sky bag that need be replaced has been loaded with information on services,, then abandon replacing or replacing again if be loaded with information on services;
Step 2C2: the TS bag that is loaded with information on services that provides with said information provider unit circularly in order replaces the sky bag in the said information transmitting apparatus, perhaps needs to fill/insert the TS bag that is loaded with information on services that the empty said information provider unit of place filling/insertion that wraps provides originally.
The invention has the beneficial effects as follows: information service system and the method based on digital television system or IPTV system according to the invention introduced empty bag replacement software module, have the multiplexer of empty bag replacement function, have empty bag replacement function scrambler, have the empty key elements such as replacing device, self-timing reception information on services of wrapping of modulator, transmission of empty bag replacement function; Utilize these key elements; Realized shared bandwidth, unified transmission, difference service, the information that realized is propagated intensification, energy-conservationization with service.
Description of drawings
Fig. 1 is the structure chart of the information service system based on digital television system or IPTV system according to the invention;
Fig. 2 is the flow chart of the information service method based on digital television system or IPTV system according to the invention.
1, information provider unit, 2, information transmitting apparatus, 3, information receiver.
Embodiment
Below in conjunction with accompanying drawing principle of the present invention and characteristic are described, institute gives an actual example and only is used to explain the present invention, is not to be used to limit scope of the present invention.
The structure chart of present embodiment is as shown in Figure 1; Provide an a kind of information service system of forming by information provider unit 1, information transmitting apparatus 2, information receiver 3 based on digital television system/IPTV system; The step of corresponding information service method is as shown in Figure 2; The TS that is loaded with information on services promptly is provided earlier bag, with the empty bag of TS bag replacement that is loaded with information on services, receives information on services at last again.
Present embodiment is mainly realized by three processes:
First process, information gathering.
Information providing can be various information advisory service, government organs, enterprises and institutions etc.Information providing is collected related service information based on positioning service and service orientation, and timing or real-time update information on services are deleted invalid or out-of-date information on services.Information providing according to relative national standards and with the agreement of information sender, put the information on services of collecting in order.Specifically comprise following mode:
Mode 1: information provider unit is at the information providing place.
Information providing is utilized empty packet form packing service information, is about to information on services and is loaded in PID number TS bag for 0x1FFF, and store them in the information provider unit into.
The empty pack arrangement that loads information on services is following:
National digital television system transmission standard stipulates that the packet length of each TS bag is 188 bytes, and preceding 4 bytes are that system uses, and are called packet header, and back 184 byte users can use, and are called payload.
Under this packaged type; Load the TS bag of information on services with sky bag PID 0x1FFF sign; TS packet header is fully according to the regulation setting of national digital television system transmission standard to the sky bag; Undefined transport_priority field is set to " 1 " in the sky packet header, carries the sign of information on services as empty package.
Under this packaged type, preceding four bytes transform the general packet header of information on services as in the payload, and concrete structure is:
First byte can be the information on services identifier, and it can be mechanism's code name of issuing service information, information classification sign, information index sign or the like.
The 1st of second byte: whether the expression information on services compressed sign.
The 2nd of second byte: the whether encrypted sign of expression information on services.
The 3rd of second byte: whether the expression information on services has carried out the sign of check code.
The 4th to the 7th of second byte: expression version number, scope 0-15 provides current version.When the recipient detects this field change, explain that the information on services content changes, fresh content can searched for and receive to information receiver again.
The 8th of second byte: represent current effective marker, set representes that the information on services that sends is current available, and reset representes that the information on services that sends is current disabled; Available again when the information on services that it sends during set again, information receiver can be searched for again and receive fresh content.
Third and fourth byte can be following situation: the 3rd byte is for loading the TS bag bag sequence number counter of current service information, and nybble is for loading the required TS bag of information on services number.The bag sequence number counter starts from 0, and corresponding to first TS bag that loads related service information, it moves in circles.
The form of the information on services that loads in the TS bag is confirmed according to service request and information attribute by the information on services supplier.
Mode 2: information providing encapsulates information on services, and passes to the information on services after the encapsulation on the information provider unit of information sender.
Information providing is utilized above-mentioned empty packet form packing service information, be about to information on services and be loaded in PID number TS bag for 0x1FFF, information providing regularly or in real time with packaged service information transfers in the information provider unit of information sender.
Mode 3: information providing does not encapsulate information on services, and the information on services of not encapsulation regularly or pass in real time on the information provider unit of information sender.
Second process, information is sent.
Information sender can be a TV in CATV network company, TV station, live telecast satellite company, perhaps unit such as television program designing distribution.
Information transmitting apparatus adopts empty bag to replace software module, has the multiplexer of empty bag replacement function, the scrambler with empty bag replacement function, the modulator with sky bag replacement function or the empty arbitrary device that wraps in the replacement device of transmission.Said information transmitting apparatus can also adopt the integrating device with empty bag replacement function; Said integrating device can be combined by any two or three devices in multiplexer, scrambler and the modulator, such as the multiplexing scrambler with empty bag replacement function, multiplexing modulator, multiplexing scrambling modulator etc.Specifically comprise following mode:
Mode 1: the information transmitting apparatus of information sender directly passes through the information provider unit direct communication of communication line and information providing; Information sender is utilized information transmitting apparatus; Convert the empty bag of the TS in the TV programme or in the television channel or in the television channel to be loaded with information on services in the information provider unit of information providing TS bag circularly in order, it is that information on services carries bag that sky in the TS stream is bundled into.
Mode 2: information sender is utilized information transmitting apparatus; Convert the empty bag of the TS in the TV programme or in the television channel or in the television channel to be loaded with information on services in the information provider unit of information sender TS bag circularly in order, it is that information on services carries bag that sky in the TS stream is bundled into.
Mode 3: information sender is utilized above-mentioned sky to seal the dress form and will be stored in information on services in the information provider unit and be loaded in PID number TS bag for 0x1FFF.Information sender is utilized information transmitting apparatus; Convert the empty bag of the TS in the TV programme or in the television channel or in the television channel to be loaded with information on services in the information provider unit of information sender TS bag circularly in order, it is that information on services carries bag that sky in the TS stream is bundled into.
The 3rd process, message pick-up.
Information receiver can be terminal equipments such as DTV STB, digital TV integrated machine, IPTV TV set-top box, IPTV TV all-in-one, intelligent television STB, intelligent television all-in-one, mobile phone, panel computer, notebook computer, computer.The user can be momentarily, inquiry service information on information receiver on one's own initiative.Information receiver can have regularly startup reception information on services, receives the back function of shutdown automatically.
The information receiver retrieval receives the information on services process:
The first step: initialization receives buffering area, variable n0, n1 and n2, n2 clear 0.N0 is corresponding to the TS bag Bale No. that loads information on services, and n1 is for loading the TS bag number of information on services, and n2 is for receiving the TS package counting facility.
Second step: information receiver reads TS stream; Discern PID number that wraps; And only from TS stream, extracting PID number is the sky bag of 0x1FFF; If the transport_priority field is given up this empty bag for " 0 ", if the transport_priority field is downloaded this " empty bag " in extra buffer for " 1 ".
The 3rd step: information receiver is delivered to the 3rd byte content of the sky bag payload that receives among the n0, and the 4th byte content delivered among the n1.
The 4th step: first byte of the sky bag payload that the information receiver inquiry receives if the needed information on services of user forwarded for the 7th step to, otherwise forwards the first step to.
The 5th step: information receiver reads TS stream; Discern PID number that wraps; And only from TS stream, extracting PID number is the sky bag of 0x1FFF; If the transport_priority field is given up this empty bag for " 0 ", if the transport_priority field is downloaded this " empty bag " in extra buffer for " 1 ".
The 6th step: first byte of the sky bag payload that the information receiver inquiry receives if the needed information on services of user forwarded for the 7th step to, otherwise forwarded for the 5th step to.
The 7th step: the 8th of second byte of the sky bag payload that the information receiver inquiry receives if " 1 " forwarded for the 8th step to, otherwise forwards the first step to.
The 8th step: preserve current version and number be relayed to for the 9th step to variable m if receive for the first time information on services; Otherwise the 4th to the 7th of second byte of the sky bag payload that comparison m and information receiver receive; If version changes and preserves current version and number be relayed to for the 9th step to variable m; Otherwise relatively whether n2 equals 0, if n2 is not equal to 0 and forwarded for the 9th step to, otherwise forwards the first step to.
The 9th step: whether the 3rd byte packet sequence number of differentiating payload equals n0, places n0 to the 3rd byte packet sequence number of payload if be not equal to.Differentiate this bag and downloaded and do not have, forwarded for the 11 step to as if downloading.
The tenth step: take out back 180 byte datas of bag payload in the extra buffer, be saved in the buffering area location corresponding to n0.N2 adds 1, if n2 equals n1 and forwarded for the 12 step to.
The 11 step: n0 adds 1, if n0 equals n1, n0 is clear 0, forwards for the 5th step to.
The 12 step: received all bags of information on services, these information on services just can be preserved, handled, show to information receiver subsequently.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (17)
1. the information service system based on digital television system or IPTV system is characterized in that, comprises information provider unit, information transmitting apparatus and information receiver;
Said information provider unit is used to provide the digital TV TS bag that is loaded with information on services of preparing the empty bag of replacement digital TV TS;
Said information transmitting apparatus; It links to each other with said information provider unit; Be used for the empty bag of TS in empty bag of the TS of digital television program stream or the digital-TV channel is replaced with the TS bag that is loaded with information on services that is provided by said information provider unit, the line data of going forward side by side broadcasting;
Said information receiver is used to receive the information on services that said information transmitting apparatus provides, and realizes the inquiry of user to information on services.
2. information service system according to claim 1 is characterized in that, said information provider unit can be integrated in the said information transmitting apparatus, as a sub-module of said information transmitting apparatus.
3. based on arbitrary described information service system in claim 1 or 2; It is characterized in that said information transmitting apparatus adopts empty bag to replace software module, has the multiplexer of empty bag replacement function, the scrambler with empty bag replacement function, the modulator with sky bag replacement function or the empty arbitrary device that wraps in the replacement device of transmission; Said information transmitting apparatus can also adopt the integrating device with empty bag replacement function, said integrating device can by in multiplexer, scrambler and the modulator any two perhaps three devices combine.
4. information service system according to claim 3; It is characterized in that said empty bag replacement software module is used for the TV programme system to digital television system or IPTV system, the sky bag of broadcasting in the digital TV TS bag of server or TV programme memory device replaces with the TS bag that is loaded with information on services that said information provider unit provides;
Said multiplexer with empty bag replacement function comprises program code multiplexing device with empty bag replacement function and the system-level multiplexer with empty bag replacement function;
Said program code multiplexing device with empty bag replacement function is used to expand the empty machine contracting system of the filling of former program code multiplexing device/insert; Specifically comprise: when code multiplexing needs the empty bag of filling/insertion; Empty bag can be filled/insert, the TS bag that is loaded with information on services that said information provider unit provides can be filled/insert again;
Said system-level multiplexer with empty bag replacement function is used to expand the empty machine contracting system of the filling of original system level multiplexer/insert; Specifically comprise: when multiplexing code stream needs the empty bag of filling/insertion; Can fill/insert empty bag; Can fill/insert the TS bag that is loaded with information on services that said information provider unit provides again, and the sky bag that can will be input to said multiplexer replaces with the TS bag that is loaded with information on services that said information provider unit provides;
Said scrambler is used for the sky bag that also exists after the scrambling of input TV programme is replaced with the TS bag that is loaded with information on services that said information provider unit provides;
Said modulator with empty bag replacement function is used to expand the empty machine contracting system of the filling of former digital television modulator/insert; Specifically comprise: when input code flow needs the empty bag of filling/insertion; Can fill/insert empty bag; Can fill/insert the TS bag that is loaded with information on services that said information provider unit provides again, and the sky bag that can will be input to said modulator replaces with the TS bag that is loaded with information on services that said information provider unit provides;
The empty bag replacement of said transmission device can be as autonomous device, also can be as the submodule of the Information Technology Equipment on the digital-TV channel; The empty bag replacement of said transmission device is used for the sky bag of TS stream on the digital-TV channel is replaced with the TS bag that is loaded with information on services that said information provider unit provides; The empty bag replacement of said transmission device also is used for when TS stream needs the empty bag of filling/insertion, can filling/insert empty bag, can realize filling/inserting the TS bag that is loaded with information on services that said information provider unit provides again;
Said integrating device with empty bag replacement function is used for exporting the sky bag that also exists when TS flows to said integrating device and replaces with the TS bag that is loaded with information on services that said information provider unit provides.
5. the empty bag replacement of transmission according to claim 4 device; It is characterized in that the empty bag replacement of said transmission device can be serially connected in whole before front end signal input to the said information receiver of said digital television system or said IPTV system and be loaded with the optional position on the channel of digital TV TS stream.
6. according to arbitrary described information service system in claim 1 or 2; It is characterized in that; Said information receiver is a kind of terminal equipment, and said terminal equipment comprises DTV STB, digital TV integrated machine, IPTV TV set-top box, IPTV TV all-in-one, intelligent television STB, intelligent television all-in-one, mobile phone, panel computer, notebook computer and computer;
Said information receiver can regularly start the information on services that the said information transmitting apparatus of reception provides, and can finish receiving back realization shutdown automatically.
7. according to arbitrary described information service system in claim 1 or 2; It is characterized in that; Said information service system can adopt the object carousel standard in the data broadcasting standard in the national digital television system that the information on services that loads at the empty bag of TS place and transmit is carried out information on services classification, structure information on services structure and encapsulated delivery information on services; And be organized as object to information on services and supply the information receiver retrieval, receive, said object comprises catalogue, file and data.
8. according to arbitrary described information service system in claim 1 or 2; It is characterized in that; Said information service system can adopt the data broadcasting standard in the national digital television system that the information on services that loads at the empty bag of TS place and transmit is constructed, encapsulated and transmits, and said data broadcasting standard comprises data pipe standard, data flow standard, multi-protocols encapsulation standard and data carousel standard.
9. according to arbitrary described information service system in claim 1 or 2; It is characterized in that; Said information service system can support to use empty bag to realize that information on services loads and transmission; Empty bag packet header is according to the national standard setting, and whether undefined field in the sky packet header has been loaded the sign of information on services as the sky bag, and the sign that whether has loaded information on services perhaps is set in sky bag payload.
10. according to arbitrary described information service system in claim 1 or 2, it is characterized in that said information service system can realize that the information on services to issue compresses, encryption and check code.
11. the information service method based on digital television system or IPTV system is characterized in that, may further comprise the steps:
Step 1: the TS that is loaded with information on services is provided bag through information provider unit;
Step 2: sky bag in the said digital television program stream or the sky bag in the digital-TV channel are replaced with the TS bag that is loaded with information on services described in the step 1 through information transmitting apparatus;
Step 3: receive the information on services that said information transmitting apparatus provides through information receiver, realize the inquiry of user to information on services.
12. information service method according to claim 11 is characterized in that, information provider unit in the said step 1 use the PSI/SI table to be loaded with information on services the TS bag describe, tissue and index.
13. information service method according to claim 11 is characterized in that, the information provider unit in the said step 1 uses and identifies the TS bag that loads information on services for privately owned PID number of prior regulation.
14. information service method according to claim 11 is characterized in that, the information provider unit in the said step 1 uses empty bag to identify the TS that loads information on services for PID number and wraps.
15. information service method according to claim 12; It is characterized in that; When the TS that is loaded with information on services that sky bag in further through information transmitting apparatus digital television program being flowed or the sky bag in the digital-TV channel replace with information provider unit to be provided wraps, the concrete following steps of carrying out of said step 2:
Step 2A1: distinguish whether the sky bag that need be replaced has been loaded with information on services,, then abandon replacing or replacing again if be loaded with information on services;
Step 2A2: detect in the said information transmitting apparatus already present PID number or be input to said information transmitting apparatus PID number; And be that TS bag in the said information provider unit is set up PID replay firing table based on testing result, change removing PID number that all TS that provided by said information provider unit the PAT/CAT/SI table wrap based on PID replay firing table again;
Step 2A3: the former PSI/SI table that extracts in the said information transmitting apparatus is analyzed; Size based on pat table in the said information provider unit is expanded the pat table in the said information transmitting apparatus; PID number of all program_number-PID centerings of the pat table of said information provider unit after the conversion of PID replay firing table, add in the pat table in the said information transmitting apparatus of expansion and carry out verification;
Step 2A4: the TS bag that is loaded with information on services that said information transmitting apparatus provides with said information provider unit in order circularly replaces the sky bag in the said information transmitting apparatus, perhaps needs to fill/insert the TS bag that is loaded with information on services that the empty said information provider unit of place filling/insertion that wraps provides originally.
16. information service method according to claim 13; It is characterized in that; When the TS that is loaded with information on services that sky bag in further through information transmitting apparatus digital television program being flowed or the sky bag in the digital-TV channel replace with said information provider unit to be provided wraps, the concrete following steps of carrying out of said step 2:
Step 2B1: distinguish whether the sky bag that need be replaced has been loaded with information on services,, then abandon replacing or replacing again if be loaded with information on services;
Step 2B2: detect in the said information transmitting apparatus already present PID number or be input to said information transmitting apparatus PID number; And judge and whether to clash wherein PID number with privately owned PID number of said prior regulation; Report an error if clash then; And abandon the replacement work of information on services, perhaps change privately owned PID number and detect again;
Step 2B3: the TS bag that is loaded with information on services that provides with said information provider unit circularly in order replaces the sky bag in the said information transmitting apparatus, perhaps needs to fill/insert the TS bag that is loaded with information on services that the empty said information provider unit of place filling/insertion that wraps provides originally.
17. information service method according to claim 14; It is characterized in that; When the TS that is loaded with information on services that sky bag in further through information transmitting apparatus said digital television program being flowed or the sky bag in the digital-TV channel replace with said information provider unit to be provided wraps, the concrete following steps of carrying out of said step 2:
Step 2C1: when the empty bag of replacement, distinguish whether the sky bag that need be replaced has been loaded with information on services,, then abandon replacing or replacing again if be loaded with information on services;
Step 2C2: the TS bag that is loaded with information on services that provides with said information provider unit circularly in order replaces the sky bag in the said information transmitting apparatus, perhaps needs to fill/insert the TS bag that is loaded with information on services that the empty said information provider unit of place filling/insertion that wraps provides originally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101354061A CN102647619A (en) | 2012-04-16 | 2012-05-02 | Information service system and method based on digital television system or IPTV (Internet Protocol television) system |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210111913 | 2012-04-16 | ||
| CN201210111913.1 | 2012-04-16 | ||
| CN2012101354061A CN102647619A (en) | 2012-04-16 | 2012-05-02 | Information service system and method based on digital television system or IPTV (Internet Protocol television) system |
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| CN102647619A true CN102647619A (en) | 2012-08-22 |
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| CN2012101354061A Pending CN102647619A (en) | 2012-04-16 | 2012-05-02 | Information service system and method based on digital television system or IPTV (Internet Protocol television) system |
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Application publication date: 20120822 |