CN101558643A - Broadcasting service transmitting apparatus and method and broadcasting service receiving apparatus and method for effectively accessing broadcasting service - Google Patents

Broadcasting service transmitting apparatus and method and broadcasting service receiving apparatus and method for effectively accessing broadcasting service Download PDF

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Publication number
CN101558643A
CN101558643A CNA2008800010627A CN200880001062A CN101558643A CN 101558643 A CN101558643 A CN 101558643A CN A2008800010627 A CNA2008800010627 A CN A2008800010627A CN 200880001062 A CN200880001062 A CN 200880001062A CN 101558643 A CN101558643 A CN 101558643A
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China
Prior art keywords
information
service
broadcast
transmission frame
data
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Granted
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CNA2008800010627A
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Chinese (zh)
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CN101558643B (en
Inventor
朴晟一
柳佳铉
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Samsung Electronics Co Ltd
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Samsung Electronics Co Ltd
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Publication date
Priority claimed from KR1020070124371A external-priority patent/KR101373013B1/en
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Priority claimed from PCT/KR2008/002697 external-priority patent/WO2008140261A2/en
Publication of CN101558643A publication Critical patent/CN101558643A/en
Application granted granted Critical
Publication of CN101558643B publication Critical patent/CN101558643B/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H04N21/4345—Extraction or processing of SI, e.g. extracting service information from an MPEG stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H04N21/4343—Extraction or processing of packetized elementary streams [PES]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/643—Communication protocols
    • H04N21/64322—IP

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A broadcasting service transmitting apparatus and method and a broadcasting service receiving apparatus and method for providing a broadcasting service formed of various types of data are provided. The broadcasting service receiving apparatus includes a receiving unit, a transport frame processing unit, a transport packet processing unit, and a broadcasting data processing unit. The receiving unit receives a transport frame having a predetermined size. The transport frame processing unit acquires from the transport frame service access information for accessing at least one broadcasting service and also acquires from the transport frame at least one transport packet for transporting at least one broadcasting data packet, by using the service access information. The transport packet processing unit processes the at least one transport packet so as to acquire at least one broadcasting data packet from the at least one transport packet. The broadcasting data processing unit processes the at least one broadcasting data packet.

Description

Be used for visiting effectively broadcast service transmitting apparatus and method, broadcast service receiving equipment and the method for broadcast service
Technical field
The present invention relates to a kind of Apparatus and method for that is used to provide the broadcast service of forming by various types of data, more particularly, relating to a kind of being used for can be fast and broadcast service transmitting apparatus and method, broadcast service receiving equipment and the method for the directly service of visit expectation.
Background technology
In digital broadcasting, when a plurality of service channel signals were re-used and send by single transmission path, at first the service channel signal was compressed respectively and is transformed to bag, then bag is multiplexed with transport stream.Identical Packet Identifier (PID) is distributed to individual channel and is wrapped accordingly, thereby can wrap differentiation accordingly with described bag with other channel.Like this, when sending the bag with the different specific ID of distributing according to the type of channel with the form of transport stream, receiver is by only selecting the bag of the channel of expectation from transport stream with reference to the ID of the bag in the channel of expectation, and the bag demultiplexing to selecting.
Fig. 1 is the flow chart that the art methods of handling the transport stream of using Packet Identifier (PID) generation is shown.
The receiver of prior art is handled transport stream according to the method shown in Fig. 1.At operation S110, receive the transport stream of the coding that comprises bag.At operation S120, the bag of transport stream is carried out Read-Solomon (Reed-Solomon, RS) decoding.At operation S130, the bag of transport stream is screened according to PID.At operation S140, in each layer, i.e. transport layer, packing layer and fluid layer unpack the bag of transport stream.At operation S150, to decoding by the data that unpack acquisition.
In the method for prior art, can clearly distinguish the bag of transport stream mutually by using PID.But the bag of transport stream should have PID, and the receiver of prior art should carry out RS decoding to each bag of transport stream, and by checking that respectively PID carries out screening.
Fig. 2 illustrates the transport stream of the prior art of using the PID generation.With reference to figure 2, by the transport stream packets of individual channel transmission transmission of audio/video (A/V) data, the transport stream packets of transport of internet protocol (IP) data, the transport stream packets of connection object data.When handling the transport stream of prior art, even the user wishes to receive only the A/V service, all transport stream packets also will experience router/RS decoding and by checking the screening of PID respectively.Therefore, when the receiver deal with data of prior art, lose time and space resources.
Disclosure of the Invention
Technical problem
The invention provides a kind of being used for owing to can carry out broadcast service transmitting apparatus and method, broadcast service receiving equipment and the method that valid data are handled with directly visiting the service of expectation fast.
Beneficial effect
According to the present invention, with being provided, the service method by using Packet Identifier (PID) screening bag to construct compares, can directly visit each service component in the service of being included in.
In addition, according to the present invention, when selecting to form the service component of service, do not need the transmission package of all RS-codings is carried out the operation of RS decoding and the operation of checking the PID of all transmission package.Therefore can prevent owing to visiting the resource waste that unwanted transmission package causes.
In addition, according to the present invention, when fixed-site in transmission frame of LMT and LIT, access services and service component apace.
In addition, according to the present invention, by in current LMT, comprising information about next LMT, even LMT and the LIT position changeable in transmission frame, but also quick access service and service component.
In addition, according to the present invention,,, also can use last LMT to recover current LMT even in current LMT, produce mistake by in current LMT, comprising about the information of the quantity of LMT with identical version.
In addition, according to the present invention,, do not need to use error flag with regard to the detectable error bag by changing the head of erroneous packets.
Description of drawings
By the detailed description of exemplary embodiment being carried out below in conjunction with accompanying drawing, above-mentioned and other characteristics of the present invention and advantage will become clearer, wherein:
Fig. 1 is the flow chart that the method for the prior art of handling the transport stream of using Packet Identifier (PID) generation is shown;
Fig. 2 illustrates the prior art transport stream of using PID to produce;
Fig. 3 illustrates the structure of transmission frame according to an embodiment of the invention;
Fig. 4 illustrates in greater detail according to the structure of embodiments of the invention at the transmission frame shown in Fig. 3;
Fig. 5 A and 5B illustrate the structure of location map table (LMT) field according to an embodiment of the invention;
Fig. 5 C illustrates the structure according to the LMT field of another enforcement of the present invention;
Fig. 6 A illustrates the structure of link information table (LIT) field according to an embodiment of the invention;
Fig. 6 B illustrates the structure of LIT field according to another embodiment of the present invention;
Fig. 7 A is the flow chart that the method for explaining LMT field and LIT field according to an embodiment of the invention is shown;
Fig. 7 B be illustrate according to another embodiment of the present invention explanation LMT field and the flow chart of LIT field;
Fig. 8 illustrates the block diagram of the structure of broadcast service transmitting apparatus according to an embodiment of the invention;
Fig. 9 is the flow chart that illustrates according to the broadcast service sending method of the embodiment of the invention;
Figure 10 illustrates the block diagram of the structure of broadcast service receiving equipment according to an embodiment of the invention;
Figure 11 illustrates the flow chart of broadcast service method of reseptance according to an embodiment of the invention.
Summary of the invention
According to an aspect of the present invention, provide a kind of broadcast service transmitting apparatus, described broadcast service is sent out Send equipment to comprise: the broadcast data packaged unit, the broadcast data of at least a type of packing, thus produce At least one broadcast data packet; The transmission package generation unit produces at least one broadcast data packet of transmission At least one transmission package; Transmission frame generation unit, generation have at least one for transmitting of pre-sizing The transmission frame of individual broadcast service is wherein constructed described broadcast service with at least one transmission package; Send The unit sends transmission frame, and wherein, the transmission frame generation unit produces transmission frame, passes through to be used in access The service access information of at least one broadcast service of transmission frame transmission is included in the transmission frame.
Service access information can be positioned at the presumptive area of transmission frame.
Service access information can comprise the positional information about next service access information.
Transmission frame can comprise at least one the virtual data channel according to the type classification of data. At least described In virtual data channel each can comprise at least one sub-data channel, described sub-data channel Comprise at least one transmission package.
Service access information can comprise: position mapping table (LMT) comprises that indication and formation are included in biography The letter of the physical location of the corresponding sub-data channel of service component of at least one broadcast service in the defeated frame Breath; Link information table (LIT) comprises the configuration about at least one broadcast service that is included in transmission frame Information.
LMT can comprise: type information, and indication is by the type of the data of transmission frame transmission; Version information, The version of indication LMT; The sub-data channel quantity information, indication and the corresponding subdata of each data type The quantity of channel; Channel index information, the position of indication sub-data channel.
LMT also can comprise: the LMT quantity information of at least one identical version, indication has with described The quantity of the LMT of LMT identical version; The LMT pointer information, the position of indicating next LMT; The additional data quantity information, the number of the additional data that indication is associated with at least one broadcast service; Attached Add the data pointer information, the position of indication additional data.
LIT can comprise: quantity of service information, and indication is by the quantity of the broadcast service of transmission frame transmission; Version information, the version of indication LIT; Information on services, the configuration of indication broadcast service.
Information on services can comprise the LMT of the channel index information of the position of distributing to the indication sub-data channel Call number.
Transmitting element can produce and send the ATSC frame that is inserted with at least one above-mentioned transmission frame.
According to a further aspect in the invention, provide a kind of broadcast service sending method, described broadcast service sending method comprises following operation: thus the broadcast data of at least a type of packing produces at least one broadcast data packet; Generation is used to transmit at least one transmission package of at least one broadcast data packet; Generation has the transmission frame that pre-sizing is used to transmit at least one broadcast service, wherein, uses at least one transmission package to construct broadcast service; Send transmission frame, wherein, produce transmission frame, to comprise the service access information that is used to visit by at least one broadcast service of transmission frame transmission.
According to a further aspect in the invention, provide a kind of broadcast service receiving equipment, described broadcast service receiving equipment comprises: receiving element receives the transmission frame with pre-sizing; The transmission frame processing unit obtains the service access information that is used to visit at least one broadcast service from transmission frame, and by using service access information also to obtain at least one transmission package that is used to transmit at least one broadcast data packet from transmission frame; The transmission package processing unit is handled at least one transmission package, thereby obtains at least one broadcast data packet from described at least one transmission package; The broadcast data processing unit is handled at least one broadcast data packet.
According to a further aspect in the invention, provide a kind of broadcast service method of reseptance, described broadcast service method of reseptance comprises following operation: receive the transmission frame with pre-sizing; Obtain the service access information that is used to visit at least one broadcast service from transmission frame, and by using service access information also to obtain at least one transmission package that is used to transmit at least one broadcast data packet from transmission frame; Handle at least one transmission package, thereby obtain at least one broadcast data packet from described at least one transmission package; With at least one broadcast data packet of processing.
Embodiment
The application requires to be submitted on May 14th, 2007 the 60/917th of United States Patent (USP) trademark office, are submitted to the 60/974th of United States Patent (USP) trademark office in No. 776 U.S. Provisional Patent Application, on September 21st, 2007, the interests of No. 321 U.S. Provisional Patent Application, and be submitted on July 31st, 2007 Korean Patent office the 10-2007-0077165 korean patent application, be submitted to the interests of the 10-2007-00124371 korean patent application of Korean Patent office on December 3rd, 2007, it is open intactly to be contained in this by reference.
Now with reference to accompanying drawing the present invention is described more fully, exemplary embodiment of the present invention is represented in the accompanying drawings.
The present invention is used for by sending the deterministic environment that the frame with constant size (that is fixed size) provides broadcast service by even interval.In specification, the frame of constant size refers to transmission frame.
Fig. 3 illustrates the structure chart of transmission frame 300 according to an embodiment of the invention.
With reference to figure 3, comprise information on services zone 310 and data area 320 according to the transmission frame 300 of current embodiment of the present invention.As shown in Figure 3, can be inserted into the transmission frame of the broadcast system except the broadcast system that is used for transmission frame 300 according to the transmission frame 300 of current embodiment of the present invention, and as the part of the transmission frame of this broadcast system (as, as the part of the ATSC frame of ATSC broadcast system) be transmitted.Selectively, can transmit transmission frame 300 independently, or can shine upon correspondingly with the transport stream of broadcast system except the broadcast system that is used for transmission frame 300 and transmit transmission frame 300.
The data area 320 of transmission frame 300 is divided into the virtual data channel according to the type classification of data.The channel that is used to send data flow that the indication of virtual data channel is physically classified according to the type of data.Each virtual data channel can be divided into independently sub-data channel.Each sub-data channel comprises at least one transmission package, and this transmission package is the least unit of the data flow of packing in transport layer.
Information on services zone 310 comprises the service access information that is used to visit the data that constitute the broadcast service of passing through transmission frame 300 transmission data.Service access information can be embodied as the presumptive area that periodically is positioned at frame as shown in Figure 3.In addition, the current service visit information can comprise the information about the position of next service access information, thereby control service access information is inserted into the cycle of frame or changes the position that service access information is inserted into frame.
Fig. 4 illustrates in greater detail the structure of transmission frame 300 according to an embodiment of the invention.Fig. 4 illustrates the structure according to the transmission frame 400 of the embodiment of the invention.With reference to figure 4, each virtual data channel of data area 320 shown in Figure 3 is divided into sub-data channel, and sub-data channel is set up service.With reference to figure 4, comprise signaling packet 410 (or signaling virtual data channel), real-time media virtual data channel 420, IP virtual data channel 430 and object virtual data channel 440 according to the transmission frame 400 of current embodiment.
Each virtual data channel among Fig. 4 is divided into sub-data channel.The structure of transmission frame 400 shown in Figure 4 on the basis of this assumption, that is, real-time media data, IP data and object data are shown as three kinds of data types.
With reference to figure 4, real-time media virtual data channel 420 comprises the first sub-data channel R-1 and the second sub-data channel R-2 that all is used to transmit real-time media data (as, A/V stream).IP virtual data channel 430 comprises the sub-data channel IP-1 that is used for transmission of IP data.Object virtual data channel 440 comprises the first sub-data channel O-1, the second sub-data channel O-2, the 3rd sub-data channel O-3 and the 4th sub-data channel O-4 that is used for the connection object data, and this object data is used in real time or uses after being broadcasted reception of service receiving equipment and storage.
Single service comprises at least one service component.Therefore, in order to provide service to the user, the broadcast service receiving equipment should receive the service component of forming service.Sub-data channel is the path of the single service component of transmission.Therefore, in order to visit special services, the broadcast service receiving equipment need be known the position of the sub-data channel of the service component that the transmission composition is served.
Be used for service access information that access group becomes the service component of service and be included in signaling packet 410 with information on services zone 310 corresponding Fig. 4 of Fig. 3.Signaling packet 410 comprises above service access information with reference to figure 3 descriptions.As shown in Figure 4, signaling packet 410 comprises a field, location map table (LMT) field, link information table (LIT) field and payload.
The LMT field provide about sub-data channel in transmission frame configuration and the information of physical location.
The LIT field provides service configuration information, that is, transmit what services by transmission frame and transmit by which sub-data channel with each service.In other words, LIT represents to indicate which sub-data channel (its quantity is at least) to be used to form the information of each service.
With reference to figure 4, the indication of the LIT field of signaling packet 410 is by transmission frame 400 transmission services 1, service 2 and serve 3.In addition, LIT field indication service 1 comprises first sub-data channel R-1 of real-time media virtual data channel 420 and the 3rd sub-data channel O-3 of the second sub-data channel R-2 and object virtual data channel 440.
Fig. 5 A and Fig. 5 B illustrate the structure according to the LMT field of the embodiment of the invention.With reference to figure 5A and Fig. 5 B, comprise type bitmap field, version number field and at least one sub-data channel amount field according to the LMT field of current embodiment.
Which data is the type bitmap field indicate be included in the transmission frame that transmits with predetermined period.Suppose transmission frame connection object data, Voice ﹠ Video (A/V) data and IP data.
The type bitmap field is by representing that 3 that whether A/V data, IP data and object data exist are formed.For example, bit " 1 " expression that is used for the type bitmap field exists with the corresponding data in this position, and bit " 0 " expression that is used for the type bitmap field does not exist with the corresponding data in this position.Therefore, when the type bitmap field was 111, A/V data, IP data and object data all were included in the transmission frame.Simultaneously, when the type bitmap field was 011, the A/V data were not included in the transmission frame, and IP data and object data are included in the transmission frame.
The version number of version number field indication LMT field.
Sub-data channel quantitaes in the sub-data channel amount field belongs to the quantity of sub-data channel of every type virtual data channel.Sub-data channel quantity is corresponding to the quantity of channel index, and this channel index indication belongs to the physical address of the sub-data channel of each virtual data channel.With reference to figure 5A, the channel index field that is used for the real-time media data is first to l channel index field, the channel index that is used for the IP data be (l+1) to m channel index field, the channel index that is used for object data is that (m+1) is to n channel index field.At this, l, m and n are the integers more than or equal to 0.For example, if do not transmit the real-time media data, then can there be sub-data channel amount field that is used for the real-time media data and the channel index field that is used for the real-time media data by transport stream.
For example, if type bitmap field value be 100 and at least one sub-data channel amount field value be 2, then two channel index fields are right after after the sub-data channel amount field, and described two channel index fields are indicated two channel index of two sub-data channels of transmission real-time media data respectively.
In the LMT field, each channel index field comprises the information of the physical location of indicating each sub-data channel.Call number can sequentially be distributed to the channel index field.The call number of sequentially distributing to the channel index field of LMT field is called the LMT call number.When producing corresponding transport stream, the LMT call number is not included in the channel index field, but the broadcast service receiving equipment can sequentially be distributed to the LMT call number in the channel index field when explaining the LMT field.In this case, do not distinguish the type of sub-data channel and sequentially distribute the LMT call number.
When type bitmap field value is 011, the sub-data channel amount field value that is used for the IP data is 2, and the sub-data channel amount field value that is used for object data is 3 o'clock, constitutes the LMT field shown in Fig. 5 B.In Fig. 5 B, the first channel index field and the indication of second channel pointer field are used for the position of the sub-data channel of IP data, and the indication of the 3rd channel index to the five channel index is used for the position of the sub-data channel of object data.At this, use LMT call number 1 to 5 respectively first channel index to the, five channel index sequentially to be numbered.
But selectively, according to the type of the virtual data channel of channel index field indication, the LMT call number can sequentially be distributed to the channel index field.In other words, according to the type of sub-data channel sub-data channel is numbered individually.
In this case, index of reference number 1 and 2 pairs first channel index fields of call number and second channel pointer field are numbered respectively, and index of reference number 1 to 3 pairs the 3rd channel index fields of call number, the 4th channel index field and the 5th channel index field is numbered respectively.Therefore, do not know that call number 1 is corresponding with the first channel index field or corresponding with the 3rd channel index field.Can handle this problem by comprising following information in addition, this information is used for determining that corresponding call number is that branch is used in IP virtual data channel or is used for object virtual data channel.With reference to figure 6B the information of expression call number corresponding to the virtual data channel of which kind of type is described after a while.
Fig. 5 C illustrates the structure of LMT field 500 according to another embodiment of the present invention.With reference to figure 5C, be divided into LMT according to the LMT field 500 of current embodiment and cover field 501, version number field 502, signaling wrapper (SEP) attribute field 503, LMT border field 504, SEP pointer field 505, first indicator field 506, A/V data channel pointer field 507, second indicator field 508, IP data channel pointer field 509, the 3rd indicator field 51O and object data channel index field 511.
LMT covers field 501 expressions and has quantity with the LMT field of the version identical version of LMT field 500.For example, if the version of LMT field 500 be 1 and the LMT place value that covers field 501 be " 00001 ", the quantity of the LMT field with version " 1 " that then will be sent out after LMT field 500 is 1.
The version of version number field 502 expression LMT fields 500.
Whether SEP attribute field 503 expression LMT fields 500 comprise signaling packet.Signaling packet can be to be used for the additional data that transmission frame is handled, as LMT or LIT, perhaps signaling packet can be be loaded in transport stream in the additional data that is associated of service, for example electronic program guides (EPG) or electronic service guidebooks (ESG).When the place value of SEP attribute field 503 was " 1 ", the SEP pointer field 505 of the position of indication signaling bag was present in after the SEP attribute field 503.The scope of the bag of LMT border field 504 indication LMT fields 500 effects.For example, LMT border field 504 can be represented the address of last bag that LMT field 500 is worked, or the quantity of the bag that LMT field 500 is worked.During the address of last bag that LMT field 500 is worked when LMT border field 504 indication, the bag that is positioned at the address before the address of last bag is confirmed as bag that LMT field 500 is worked.This means that new LMT field is present in the address next address afterwards of LMT border field 504 expressions.Therefore, the use of LMT border field 504 can realize easily predicting the position of next LMT field.
The position of SEP pointer field 505 indication signaling bags.
First indicator field 506 indicates whether to exist sub-data channel.When the value of first indicator field 506 is " 1 ", is right after after first indicator field 506 and has channel index.With reference to figure 5C, the existence of first indicator field, 506 indication A/V sub-data channels.
The position of A/V data channel pointer field 507 indication A/V sub-data channels.
Second indicator field 508 indicates whether to exist additional sub-data channel.When the value of second indicator field 508 is " 1 ", is right after after second indicator field 508 and has channel index.With reference to figure 5C, the existence of second indicator field, 508 indication IP sub-data channels.
The position of IP data channel pointer field 509 indication IP sub-data channels.
The 3rd indicator field 510 is similar to second indicator field 508, indicates whether to exist additional sub-data channel.When the value of the 3rd indicator field 510 is " 1 ", is right after after the 3rd indicator field 510 and has channel index.With reference to figure 5C, the existence of the 3rd indicator field 510 denoted object sub-data channels.
The position of object data channel index field 511 denoted object sub-data channels.
The broadcast service receiving equipment is known the quantity of sub-data channel by using first indicator field 506, second indicator field 508, the 3rd indicator field 510, knows the position of sub-data channel by using channel index 507,509 and 511.
Fig. 6 A illustrates the structure of LIT field according to an embodiment of the invention.With reference to figure 6A, comprise quantity of service field, version number field, indicate at least one service field of at least one service according to the LIT field of current embodiment.
The indication of quantity of service field is included in the quantity according to the service in the single transmission frame of the present invention.
The version of version number field indication LIT field.
Each service field comprises service identifier field (SID) and at least one LMT call number field.In the structure of above-mentioned LIT field, at least one number of at least one channel index is distributed at least one LMT call number field indication.Therefore, the broadcast service receiving equipment can be known the physical address with the corresponding sub-data channel of service of expectation by explaining the LIT field from transmission frame.
For example, suppose the signaling packet of the transport stream that the explanation of broadcast service receiving equipment receives, LMT field such as Fig. 5 B illustrate in this signaling packet, comprise a LMT call number field and the 2nd LMT call number field in the n service field shown in Fig. 6 A, and the value of a LMT call number field and the 2nd LMT call number field is 2 and 5 respectively.In this case, the broadcast service receiving equipment is service with the n service interprets, this service comprises such data, that is, be included in and have by the data in the sub-data channel of the physical location of the second channel pointer shown in Fig. 5 B indication and be included in the data that have by in the sub-data channel of the physical location of the indication of the 5th channel index shown in Fig. 5 B.Therefore, when expectation n service, the broadcast service receiving equipment is not handled all transmission package that are included in the transport stream, but only handle the data of transmitting by the transmission package in the sub-data channel that is included in the physical locations of indicating, thereby handle broadcast data fast and effectively by second channel pointer field and the 5th channel index field.
Fig. 6 B illustrates the structure of LIT field according to another embodiment of the present invention.With reference to figure 6B, comprise at least one service field of quantity of service field, version number field and at least one service of indication according to the LIT field of current embodiment.
Each service field comprises SID and at least one channel information field.
For example, suppose shown in the LMT field such as Fig. 5 B of transport stream, and distribute to the channel index field independently according to the LMT call number that the type of the sub-data channel of channel index field indication will order.In other words, use call number that sub-data channel is numbered independently according to the type of data.In addition, suppose to comprise two sub-data channels in the service of the n shown in Fig. 6 B.Therefore, the n service field of Fig. 6 B comprises the first channel information field and second channel information field.
In this case, use 2 pairs of call number 1 and call numbers to be numbered respectively, and use 3 pairs of call number 1, call number 2 and call numbers to be numbered respectively with corresponding the 3rd channel index field of the sub-data channel that is used for object data, the 4th channel index field and the 5th channel index field (shown in Fig. 5 B) with corresponding first channel index field of the sub-data channel that is used for the IP data and second channel pointer field (shown in Fig. 5 B).
Each channel information field comprises type information field and LMT call number field.
The type information field is formed by 2 and the type of indication and the corresponding sub-data channel of LMT call number.The data value of type information field " 01 " can indicate with the corresponding sub-data channel of LMT call number be the sub-data channel that is used for the IP data.On the other hand, the data value of type information field " 10 " can indicate with the corresponding sub-data channel of LMT call number be the sub-data channel that is used for object data.
LMT call number field is formed by 5.
When the value of the first channel information field is " 0100010 ", high 2 indication IP virtual subnet data channels, low 5 indications have the channel index of LMT call number 2.Therefore, it is on the throne in the sub-data channel of the physical locations of being represented by the second channel pointer field to know that the n service comprises that this data, these data comprise.
When the value of second channel information field is " 1000011 ", high 2 denoted object virtual subnet data channels, low 5 indications have the channel index of LMT call number 3.Therefore, know that the n service comprises that also this data, these data comprise the sub-data channel in the physical locations of being indicated by the 5th channel index field on the throne.
Therefore, when expectation n service, the broadcast service receiving equipment is not handled all transmission package that are included in the transport stream, but only handle the data of transmitting by the transmission package that is included in the sub-data channel that is arranged in the physical locations of indicating, thereby handle broadcast data fast and effectively by second channel pointer field and the 5th channel index field.
Fig. 7 A illustrates the flow chart of explaining the method for LMT field and LIT field according to an embodiment of the invention in apparatus for receiving broadcasting.Send the LMT field by even interval, and this LMT field is positioned at the presumptive area of transmission frame.
With reference to figure 7A, at operation S710, when the broadcast service receiving equipment received transmission frame, the broadcast service receiving equipment obtained and resolves the signaling packet that comprises service access information of the presumptive area that is positioned at transmission frame.
At operation S703, the broadcast service receiving equipment determines whether there is the LMT field in signaling packet.If S703 determines not exist the LMT field in signaling packet in operation, then determine in the broadcast service receiving equipment, whether to store last LMT field at operation S705.If S705 determines to exist last LMT field in the broadcast service receiving equipment in operation, then method proceeds to operation S711.
If S703 determines to exist the LMT field in signaling packet in operation, then determined whether to upgrade the version of LMT field according to being included in version information in the LMT field at operation S707 broadcast reception service equipment.If, then explain the LMT field at operation S709 at the version that operation S707 has determined to upgrade the LMT field.At operation S709,, obtain information about the position of sub-data channel by explaining the LMT field.
At operation S711, the broadcast service receiving equipment determines whether there is the LIT field in signaling packet.If S711 determines not exist the LIT field in signaling packet in operation, then determine in the broadcast service receiving equipment, whether there is last LIT field at operation S713.If S713 determines to exist last LIT field in the broadcast service receiving equipment in operation, then method proceeds to operation S719.
If S711 determines to exist the LIT field in signaling packet in operation, then determined whether to upgrade the version of LIT field according to being included in version information in the LIT field at operation S715 broadcast service receiving equipment.If, then explain the LIT field at operation S717 at the version that operation S715 has determined to upgrade the LIT field.At operation S717, by explaining the LIT field, obtain link information about each service, that is, and service configuration information.
At operation S719,, handle this service then from the explanation results acquisition service of LMT field and LIT field.
Fig. 7 B be illustrate according to another embodiment of the present invention explanation LMT field and the flow chart of the method for LIT field.In Fig. 7 B, change the position of LMT field and the cycle that the LMT field is inserted into transmission frame.By with Fig. 7 A in operation among Fig. 7 B of identical label indication identical with the operation among Fig. 7 A, so omit detailed description.
With reference to figure 7B,, extract the LMT field from transmission frame according to the LMT pointer information that extracts from last LMT field at operation S720.The LMT pointer information is pointed out the position of next LMT field.Therefore, even when the LMT field fails to be inserted into the presumptive area of transmission frame, also can easily extract the LMT field from transmission frame.
At operation S703, the broadcast service receiving equipment determines whether there is the LMT field in the position by the indication of LMT pointer information.If determine to have the LMT field in the position by the indication of LMT pointer information at operation S703, then method proceeds to S707.On the other hand, if determine not have the LMT field in the position by the indication of LMT pointer information at operation S703, then method proceeds to operation S730.There is not the situation that the LMT field means that the LMT field is omitted and in the LMT field, produces wrong situation by the position of LMT pointer information indication.
At operation S730, determine according to the LMT quantity information that is included in the identical version in the last LMT field whether last LMT field is effective.The effective fact of last LMT field means can continue to use last LMT field.If S730 determines that last LMT field is effective in operation, then method proceeds to operation S711.
In specification, the LMT quantity information of identical version represents to have the quantity of the LMT field of identical version.For example, suppose that last LMT field is called a LMT field.The LMT quantity information that is included in the identical version in the LMT field represents to have with a LMT field identical version and after a LMT field quantity of the LMT that is transmitted (or reception).If being included in the LMT quantity information of the identical version in the LMT field is " 3 ", then there are three LMT that have with a LMT field identical version.Therefore, when the LMT quantity information of the identical version in being included in a LMT field is equal to or greater than " 1 ", the version that is included in the LMT field in the present frame is identical with the version of a LMT field, therefore can use a LMT field to handle the bag that is included in the present frame.
Fig. 8 illustrates the block diagram of the structure of broadcast service transmitting apparatus 800 according to an embodiment of the invention.With reference to figure 8, comprise broadcast data packaged unit 810, transmission package generation unit 820, transmission frame generation unit 830 and transmitting element 840 according to the broadcast service transmitting apparatus 800 of current embodiment.
The broadcast data of at least a type of broadcast data packaged unit 810 packings, thus at least one broadcast data packet produced.Broadcast data comprises application data (as real-time media data (for example, A/V stream), IP data, object data etc.) and signaling data (as Program Specific Information (PSI), information on services (SI) and metadata).For example, can be according to MEG-4 system standard packing application data.
Transmission package generation unit 820 produces at least one transmission package that is used to transmit at least one broadcast data packet.Transmission package can have the size identical with the mpeg 2 transport stream bag.But, be included in the embodiments of the invention in the presumptive area of transmission frame according to service access information, do not need Packet Identifier to be included in the transmission package as PID is included in the mpeg 2 transport stream bag.Similarly, be not included in the another embodiment of the present invention in the presumptive area of transmission frame according to service access information, because service access information comprises the information about the position of next service access information, therefore do not need Packet Identifier is included in the transmission frame bag.
Transmission frame generation unit 830 produces the transmission frame that is used to send at least one broadcast service with pre-sizing, and this transmission frame uses at least one transmission package that produces to construct.As shown in Figure 4, transmission frame generation unit 830 is formed at least one transmission package at least one sub-data channel, and produces the transmission frame that comprises described at least one sub-data channel.
Transmission frame generation unit 830 produces transmission frames, is included in the transmission frame with the service access information that is used at least one broadcast service that visit sends by transmission frame.In order to realize this function, transmission frame generation unit 830 can comprise the service access information generation unit 832 that is used to produce service access information.
As mentioned above, can transmit service access information by in the presumptive area (for example, first bag of transmission frame) that service access information is included in transmission frame.By the position of fixed service visit information, the broadcast service receiving equipment can easily be visited the service access information that is included in the transmission frame.But service access information is not must be included in the presumptive area of transmission frame.This be because, be included in positional information in the current service visit information by utilization about next service access information, can easily visit next service access information.
Transmission frame comprises at least one pseudo channel according to the type classification of data.In described at least one pseudo channel each comprises at least one sub-data channel.Sub-data channel is corresponding at least one service component of forming broadcast service in transmission frame each.
Service access information comprises that indication is included in the LMT of position of each sub-data channel in the transmission frame and the indication LIT about the information of the configuration of at least one broadcast service by transmission frame transmission.
LMT comprises: type information, and indication is by the type of the data of transmission frame transmission; Version information, the version of indication LMT; The sub-data channel quantity information, the quantity of indication and the corresponding sub-data channel of each data type; Channel index information is indicated the position of each sub-data channel.LMT also can comprise: the LMT quantity information of at least one identical version, and indication has the quantity of the LMT of identical version; The LMT pointer information, the position of indicating next LMT; The additional data quantity information, the quantity of the additional data that indication is associated with at least one broadcast service; The additional data pointer information is indicated the position of every additional data.
LIT comprises: quantity of service information, and indication is by the quantity of the broadcast service of transmission frame transmission; Version information, the version of indication LIT; Information on services is indicated the configuration of each service.Information on services comprises distributes to the channel index information index that is included among the LMT number.If according to independently call number sequentially being distributed to channel index information by the type of the sub-data channel of channel index indication, then as mentioned above, information on services can comprise type information and call number.In this case, type information indicates corresponding call number to be associated with the sub-data channel of which kind of type.
The transmitting element 840 intervening sequences ground of section on schedule sends a series of transmission frames that produced by transmission frame generation unit 830.Transmitting element 840 can produce the ATSC frame that is inserted with at least one transmission frame, and sends the ATSC frame according to ATSC system standard.
Fig. 9 is the flow chart that the broadcast service sending method of carrying out in the broadcast service transmitting apparatus 800 of Fig. 8 according to an embodiment of the invention is shown.
With reference to figure 8 and Fig. 9, at operation S910, the broadcast data of at least a type of broadcast data packaged unit 810 packings of broadcast service transmitting apparatus 800, thus produce at least one broadcast data packet.
At operation S920, transmission package generation unit 820 produces at least one transmission package that is used to transmit at least one broadcast data packet.
At operation S930, transmission frame generation unit 830 produces the transmission frame that is used to send at least one broadcast service with pre-sizing, and this transmission frame uses at least one transmission package that produces to construct.At operation S930, produce transmission frame, be included in the transmission frame with the service access information that is used at least one broadcast service that visit sends by transmission frame.
At operation S940, transmitting element 840 sends a series of transmission frames that produced by transmission frame generation unit 830.The intervening sequences ground of section sends transmission frame on schedule.
Figure 10 illustrates the block diagram of the structure of broadcast service receiving equipment 1000 according to an embodiment of the invention.With reference to Figure 10, comprise receiving element 1010, transmission frame processing unit 1020, transmission package processing unit 1030, broadcast data processing unit 1040 and user input unit 1050 according to the broadcast service receiving equipment 1000 of current embodiment.
Receiving element 1010 receives at least one transmission frame with pre-sizing.Can construct receiving element 1010 to receive the ATSC frame and to obtain at least one transmission frame from the ATSC frame.
Transmission frame processing unit 1020 obtains the service access information that is used to visit at least one broadcast service from transmission frame.Then, transmission frame processing unit 1020 also obtains at least one transmission package that is used to transmit at least one broadcast data packet from transmission frame by using service access information.If service access information is positioned at the presumptive area of the transmission frame of reception, then transmission frame processing unit 1020 obtains service access information from the presumptive area of the transmission frame of reception.On the other hand, if service access information is not positioned at the presumptive area of the transmission frame of reception, then transmission frame processing unit 1020 obtains service access information based on the positional information that is included in the last service access information from the transmission frame that receives.Be included in positional information in the current service visit information and represent information about the position of next service access information.
More particularly, LMT field and LIT field that transmission frame processing unit 1020 is explained as service access information, thus visit is used for the sub-data channel of each service.When one of a plurality of services of selecting to send by transmission frame, transmission frame processing unit 1020 sends the transmission package that is included in the sub-data channel of forming the service of selecting to transmission package processing unit 1030.
Can carry out the operation of from a plurality of services that send by transmission frame, selecting service according to the user input signal that receives by user input unit 1050.When the user selects to serve, can only send the transmission package that is included in the sub-data channel of forming the service of selecting to transmission package processing unit 1030, and handle by transmission package processing unit 1030.Therefore, do not need to carry out traditional operation, that is, explain to be included in all PID in the transmission package and only to filter out transmission package with predetermined PID.
Transmission package processing unit 1030 is handled at least one transmission package that receives from transmission frame processing unit 1020, thereby obtains at least one broadcast data packet from described at least one transmission package.Transmission package processing unit 1030 can comprise that also head changes the unit (not shown).When having mistake in the broadcast data packet of obtaining, head changes a unit head value of the broadcast data packet of mistake is changed into predetermined value.At this moment, head changes the unit and the head value of the broadcast data packet of mistake can be changed into the value that general bag can't have.For example, the head of the broadcast data packet of mistake can comprise that the broadcast data packet of misdirection is not the information of first bag, and instruction decoding information is included in the information in the wrong broadcast data packet.Because decoded information should be sent out by first bag, so the broadcast data packet of above-mentioned mistake is incorrect.According to the present invention, come the bag of misdirection to compare with using the position in the prior art, can not use institute's rheme to detect wrong bag.Therefore, can reduce the amount that sends data.
Broadcast data processing unit 1040 is handled at least one broadcast data packet.Broadcast data processing unit 1040 can be embodied as the decoder that is used to handle according to the broadcast data of MPEG-4 system standard coding.
Figure 11 illustrates the flow chart of broadcast service method of reseptance according to an embodiment of the invention.
With reference to Figure 11,, receive at least one transmission frame with pre-sizing at operation S1110.
At operation S1120, obtain the service access information that is used to visit at least one broadcast service from transmission frame, and by using service access information also to obtain at least one transmission package that is used to transmit at least one broadcast data packet from transmission frame.
At operation S1130, handle at least one transmission package, thereby obtain at least one broadcast data packet from least one transmission package.
At operation S1140, handle at least one broadcast data packet.
The present invention also can be embodied as the computer-readable code on the computer readable recording medium storing program for performing.Realize that functional programs of the present invention, code and code segment can easily be explained by the ordinary procedure technical staff in field under the present invention.Computer readable recording medium storing program for performing is any data storage device that can store data, and these data can be passed through computer system reads thereafter.The example of computer readable recording medium storing program for performing comprises read-only memory (ROM), random-access memory (ram), CD-ROM, tape, floppy disk, CD, flash memory etc.Computer readable recording medium storing program for performing also can be distributed on the computer system of network connection, thereby with distribution mode storage and computer readable code executed.
Although represented particularly with reference to exemplary embodiment of the present and described the present invention, but will be understood by those skilled in the art that, under the situation that does not break away from the spirit and scope of the present invention that are defined by the claims, can carry out various changes in form and details.

Claims (46)

1, a kind of broadcast service transmitting apparatus comprises:
The broadcast data packaged unit, the broadcast data of at least a type of packing, thus produce at least one broadcast data packet;
The transmission package generation unit produces at least one transmission package that is used to transmit at least one broadcast data packet;
The transmission frame generation unit produces the transmission frame that is used to transmit at least one broadcast service with pre-sizing, wherein uses at least one transmission package to constitute described broadcast service; With
Transmitting element sends transmission frame,
Wherein, the transmission frame generation unit produces transmission frame, thereby the service access information that is used for visiting at least one broadcast service by the transmission frame transmission is included in transmission frame.
2, broadcast service transmitting apparatus as claimed in claim 1, wherein, service access information is positioned at the presumptive area of transmission frame.
3, broadcast service transmitting apparatus as claimed in claim 1, wherein, service access information comprises the positional information about next service access information.
4, broadcast service transmitting apparatus as claimed in claim 1, wherein:
Transmission frame comprises at least one the virtual data channel according to the type classification of data; With
In described at least one virtual data channel each comprises at least one sub-data channel, and described sub-data channel comprises at least one transmission package.
5, broadcast service transmitting apparatus as claimed in claim 1, wherein, service access information comprises: the location map table comprises the information of indicating with the physical location that constitutes the corresponding sub-data channel of service component that is included at least one broadcast service in the transmission frame; With the link information table, comprise information about the configuration that is included at least one broadcast service in the transmission frame.
6, broadcast service transmitting apparatus as claimed in claim 5, wherein, the location map table comprises: type information, indication is by the type of the data of transmission frame transmission; Version information, the version of indicating positions mapping table; The sub-data channel quantity information, the quantity of indication and the corresponding sub-data channel of each data type; With channel index information, the position of indication sub-data channel.
7, broadcast service transmitting apparatus as claimed in claim 6, wherein, the location map table also comprises: the location map table quantity information of at least one identical version, indication has and the quantity of described location map epiphase with the location map table of version; Location map list index information is indicated the position of next location map table; The additional data quantity information, the bar number of the additional data that indication is associated with at least one broadcast service; With the additional data pointer information, the position of indication additional data.
8, broadcast service transmitting apparatus as claimed in claim 5, wherein, the link information table comprises: quantity of service information, indication is by the quantity of the broadcast service of transmission frame transmission; Version information, the version of indication link information table; And information on services, the configuration of indication broadcast service.
9, broadcast service transmitting apparatus as claimed in claim 8, wherein, information on services comprises: location map table index number, distribute to the channel index information of the position of indication sub-data channel.
10, broadcast service transmitting apparatus as claimed in claim 1, wherein, transmitting element produces and sends the ATSC frame of the transmission frame that is inserted with at least one claim 1.
11, a kind of broadcast service sending method comprises:
The broadcast data of at least a type of packing, thus at least one broadcast data packet produced;
Generation is used to transmit at least one transmission package of at least one broadcast data packet;
Generation has the transmission frame that is used to transmit at least one broadcast service of pre-sizing, wherein uses at least one transmission package to constitute described broadcast service; With
Send transmission frame,
Wherein, produce transmission frame, to comprise the service access information that is used to visit by at least one broadcast service of transmission frame transmission.
12, broadcast service sending method as claimed in claim 11, wherein, service access information is positioned at the presumptive area of transmission frame.
13, broadcast service sending method as claimed in claim 11, wherein, service access information comprises the positional information about next service access information.
14, broadcast service sending method as claimed in claim 11, wherein:
Transmission frame comprises at least one the virtual data channel according to the type classification of data; With
In described at least one virtual data channel each comprises at least one sub-data channel, and described sub-data channel comprises at least one transmission package.
15, broadcast service sending method as claimed in claim 11, wherein, service access information comprises: the location map table comprises the information of indicating with the physical location that constitutes the corresponding sub-data channel of service component that is included at least one broadcast service in the transmission frame; With the link information table, comprise information about the configuration that is included at least one broadcast service in the transmission frame.
16, broadcast service sending method as claimed in claim 15, wherein, the location map table comprises: type information, indication is by the type of the data of transmission frame transmission; Version information, the version of indicating positions mapping table; The sub-data channel quantity information, the quantity of indication and the corresponding sub-data channel of each data type; With channel index information, the position of indication sub-data channel.
17, broadcast service sending method as claimed in claim 16, wherein, the location map table also comprises: the location map table quantity information of at least one identical version, indication has and the quantity of described location map epiphase with the location map table of version; Location map list index information, the position of indication the next position mapping table; The additional data quantity information, the bar number of the additional data that indication is associated with at least one broadcast service; With the additional data pointer information, the position of indication additional data.
18, broadcast service sending method as claimed in claim 15, wherein, the link information table comprises: quantity of service information, indication is by the quantity of the broadcast service of transmission frame transmission; Version information, the version of indication chaining service table; And information on services, the configuration of indication broadcast service.
19, broadcast service sending method as claimed in claim 18, wherein, information on services comprises: location map table index number, distribute to the channel index information of the position of indication sub-data channel.
20, broadcast service sending method as claimed in claim 11 also comprises: the ATSC frame that produces and send the transmission frame that is inserted with at least one claim 11.
21, a kind of broadcast service receiving equipment comprises:
Receiving element receives the transmission frame with pre-sizing;
The transmission frame processing unit obtains the service access information that is used to visit at least one broadcast service from transmission frame, and by using service access information also to obtain at least one transmission package that is used to transmit at least one broadcast data packet from transmission frame;
The transmission package processing unit is handled at least one transmission package, thereby obtains at least one broadcast data packet from least one transmission package; With
The broadcast data processing unit is handled at least one broadcast data packet.
22, broadcast service receiving equipment as claimed in claim 21, wherein, service access information is positioned at the presumptive area of transmission frame.
23, broadcast service receiving equipment as claimed in claim 21, wherein:
Service access information comprises the positional information about next service access information; With
The transmission frame processing unit obtains service access information based on the positional information that is included in the last service access information from transmission frame.
24, broadcast service receiving equipment as claimed in claim 21, wherein:
Service access information comprises about having the information with the bar number of the service access information of described service access information identical content; With
The transmission frame processing unit also comprises service access information recovery unit, if having mistake in the service access information of obtaining, then service access information recovery unit recovers the service access information obtained based on last service access information.
25, broadcast service receiving equipment as claimed in claim 21, wherein:
Transmission frame comprises at least one the virtual data channel according to the type classification of data; With
In described at least one virtual data channel each comprises at least one sub-data channel, and described sub-data channel comprises at least one transmission package.
26, broadcast service receiving equipment as claimed in claim 21, wherein, service access information comprises: the location map table comprises the information of indicating with the physical location that constitutes the corresponding sub-data channel of service component that is included at least one broadcast service in the transmission frame; With the link information table, comprise information about the configuration that is included at least one broadcast service in the transmission frame.
27, broadcast service receiving equipment as claimed in claim 26, wherein, the location map table comprises: type information, indication is by the type of the data of transmission frame transmission; Version information, the version of indicating positions mapping table; The sub-data channel quantity information, the quantity of indication and the corresponding sub-data channel of each data type; With channel index information, the position of indication sub-data channel.
28, broadcast service receiving equipment as claimed in claim 27, wherein, the location map table also comprises: the location map table quantity information of at least one identical version, indication has and the quantity of described location map epiphase with the location map table of version; Location map list index information, the position of indication the next position mapping table; The additional data quantity information, the bar number of the additional data that indication is associated with at least one broadcast service; With the additional data pointer information, the position of indication additional data.
29, broadcast service receiving equipment as claimed in claim 26, wherein, the link information table comprises: quantity of service information, indication is by the quantity of the broadcast service of transmission frame transmission; Version information, the version of indication link information table; And information on services, the configuration of indication broadcast service.
30, broadcast service receiving equipment as claimed in claim 29, wherein, information on services comprises: call number, distribute to the channel index information of position of indication sub-data channel.
31, broadcast service receiving equipment as claimed in claim 21, wherein, receiving element receives the ATSC frame and obtains from the ATSC frame and requires 21 transmission frame at least one right.
32, broadcast service receiving equipment as claimed in claim 21, wherein:
The transmission frame processing unit comprises that also head changes the unit, if having mistake in the broadcast data packet of obtaining, then the predetermined headers value is changed into the head value of the broadcast data packet of mistake in head change unit; With
The broadcast data processing unit is not handled at least one broadcast data packet with predetermined headers value at least one broadcast data packet.
33, a kind of broadcast service method of reseptance comprises:
Reception has the transmission frame of pre-sizing;
Obtain the service access information that is used to visit at least one broadcast service from transmission frame, and by using service access information also to obtain the transmission package that is used to transmit at least one broadcast data packet from transmission frame;
Handle at least one transmission package, thereby obtain at least one broadcast data packet from described at least one transmission package; With
Handle at least one broadcast data packet.
34, broadcast service method of reseptance as claimed in claim 33, wherein, service access information is positioned at the presumptive area of transmission frame.
35, broadcast service method of reseptance as claimed in claim 33, wherein:
Service access information comprises the positional information about next service access information; With
The step of obtaining transmission package comprises: obtain service access information based on the positional information that is included in the last service access information from transmission frame.
36, broadcast service method of reseptance as claimed in claim 33, wherein:
Service access information comprises about having the information with the bar number of the service access information of described service access information identical content; With
The step of obtaining transmission package also comprises: if having mistake in the service access information of obtaining, then recover the service access information obtained based on last service access information.
37, broadcast service method of reseptance as claimed in claim 33, wherein:
Transmission frame comprises at least one the virtual data channel according to the type classification of data; With
In described at least one virtual data channel each comprises at least one sub-data channel, and described sub-data channel comprises at least one transmission package.
38, broadcast service method of reseptance as claimed in claim 33, wherein, service access information comprises: the location map table comprises the information of indicating with the physical location that constitutes the corresponding sub-data channel of service component that is included at least one broadcast service in the transmission frame; With the link information table, comprise information about the configuration that is included at least one broadcast service in the transmission frame.
39, broadcast service method of reseptance as claimed in claim 38, wherein, the location map table comprises: type information, indication is by the type of the data of transmission frame transmission; Version information, the version of indicating positions mapping table; The sub-data channel quantity information, the quantity of indication and the corresponding sub-data channel of each data type; With channel index information, the position of indication sub-data channel.
40, broadcast service method of reseptance as claimed in claim 39, wherein, the location map table also comprises: the location map table quantity information of at least one identical version, indication has and the quantity of described location map epiphase with the location map table of version; Location map list index information, the position of indication the next position mapping table; The additional data quantity information, the bar number of the additional data that indication is associated with at least one broadcast service; With the additional data pointer information, the position of indication additional data.
41, broadcast service method of reseptance as claimed in claim 38, wherein, the link information table comprises: quantity of service information, indication is by the quantity of the broadcast service of transmission frame transmission; Version information, the version of indication link information table; And information on services, the configuration of indication broadcast service.
42, broadcast service method of reseptance as claimed in claim 41, wherein, information on services comprises the channel index information index number of the position of distributing to the indication sub-data channel.
43, broadcast service method of reseptance as claimed in claim 33, wherein, receive transmission frame step comprise: receive the ATSC frame and obtain the transmission frame of at least one claim 33 from the ATSC frame.
44, broadcast service method of reseptance as claimed in claim 33, wherein:
Obtain broadcast data packet step also comprise: if in the broadcast data packet of obtaining, have mistake, then the head value of the broadcast data packet of mistake is changed into the predetermined headers value; With
In the step of handling broadcast data packet, do not handle at least one broadcast data packet at least one broadcast data packet with predetermined headers value.
45, a kind of computer readable recording medium storing program for performing that records the program that is used for the broadcast service sending method thereon, described method comprises:
The broadcast data of at least a type of packing is to produce at least one broadcast data packet;
Generation is used to transmit at least one transmission package of at least one broadcast data packet;
Generation has the transmission frame that is used to transmit at least one broadcast service of pre-sizing, wherein, uses at least one transmission package to construct described broadcast service; With
Send transmission frame;
Wherein, produce transmission frame, to comprise the service access information that is used to visit by at least one broadcast service of transmission frame transmission.
46, a kind of computer readable recording medium storing program for performing that records the program that is used for the broadcast service method of reseptance thereon, described method comprises:
Reception has the transmission frame of pre-sizing;
Obtain the service access information that is used to visit at least one broadcast service from transmission frame, and by using service access information also to obtain at least one transmission package that is used to transmit at least one broadcast data packet from transmission frame;
Handle at least one transmission package, thereby obtain at least one broadcast data packet from described at least one transmission package; With
Handle at least one broadcast data packet.
CN2008800010627A 2007-05-14 2008-05-14 Broadcasting service transmitting apparatus and method and broadcasting service receiving apparatus and method for effectively accessing broadcasting service Expired - Fee Related CN101558643B (en)

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US91777607P 2007-05-14 2007-05-14
US60/917,776 2007-05-14
KR20070077165 2007-07-31
KR1020070077165 2007-07-31
KR10-2007-0077165 2007-07-31
US97432107P 2007-09-21 2007-09-21
US60/974,321 2007-09-21
KR10-2007-0124371 2007-12-03
KR1020070124371 2007-12-03
KR1020070124371A KR101373013B1 (en) 2007-05-14 2007-12-03 Broadcasting service transmitting apparatus and method and broadcasting service receiving apparatus and method for accessing broadcasting service effectively
PCT/KR2008/002697 WO2008140261A2 (en) 2007-05-14 2008-05-14 Broadcasting service transmitting apparatus and method and broadcasting service receiving apparatus and method for effectively accessing broadcasting service

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Cited By (3)

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