Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N7/00—Television systems
  • H04N7/16—Analogue secrecy systems; Analogue subscription systems
  • H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
  • H04N7/163—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing by receiver means only
• • 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
  • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
  • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
• • 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
  • H04N21/4348—Demultiplexing of additional data and video streams
• • 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
  • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
  • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
  • H04N21/4622—Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet

Definitions

• the present invention relates to a method of receiving service guide information and an apparatus for receiving service guide information.
• Contents indicate contents or information including an image, a sound and a text which are provided to a user via wired/wireless communication. Recently, contents are manufactured by a digital method and provided via a variety of broadcast channels and interactive channels. For example, the user can download and view the contents via the Internet. With a combination of a broadcast system and a communication system, a method of receiving the same contents from the broadcast system and the communication system has been considered. Disclosure of Invention Technical Problem
• An object of the present invention is to provide a method of receiving service guide information and an apparatus for receiving service guide information, which is capable of efficiently acquiring the service guide information.
• the present invention provides a method of receiving service guide information, the method including requesting list information of the service guide information, which can be provided by a server, to the server which can communicate with an interactive channel, receiving the list information including partition information, which is a criterion for grouping the service guide information, from the server via the interactive channel; and receiving the service guide information grouped according to the selection of a user in the service guide information grouped according to the partition information of the list information.
• an apparatus for receiving service guide information including a broadcast receiving unit which receives bootstrap information including location information of list information of the service guide information, a communication unit which transmits a signal for requesting the list information to the server according to the location information and receives partition information which is a criterion for grouping the service guide in- formation and the grouped service guide information from the server; an input unit which receives selection information of the partition information from a user, and a control unit which generates and outputs the signal for requesting the list information from the location information of the bootstrap information to the communication unit, controls the communication unit to receive the grouped service guide information according to the selection information received by the input unit, and outputs the grouped service guide information received by the communication unit.
• FIG. 1 is a view showing an example of a data model of electronic service guide
• FIG. 2 is a view showing an example of the type of partition information of the ESG information.
• FIG. 3 is a view showing an example of defining TimeGroupingType of a
• FIG. 4 is a view showing list information of the ESG information which can be received by a terminal via an interactive channel.
• FIGs. 5 to 9 are views showing a partition element (PartitionDeclaration) of the grouped ESG information shown in FIG. 4.
• FIG. 10 is a view showing an apparatus for transmitting ESG information according to an embodiment of the present invention.
• FIG. 11 is a view showing a modulating and encoding unit shown in FIG. 10.
• FIG. 12 is a view showing the signal arrangement according to the result of building frames by a frame builder in the example of FIG. 11.
• FIG. 13 is a view showing an example of transmitting a broadcasting program, contents and data via a channel.
• FIG. 14 is a view showing an apparatus for receiving ESG information.
• FIG. 15 is a detailed view showing a system decoder of FIG. 14.
• FIG. 16 is a view showing a protocol stack.
• FIG. 17 is a flowchart illustrating a method of receiving ESG information according to an embodiment of the present invention.
• ESG electronic service guide
• the ESG information includes at least one of service schedule information for allowing a user to select a service, and information for allowing the user to purchase, access and store items using a terminal.
• the user can receive the ESG information and select and purchase a desired service using the terminal.
• An interactive channel indicates a bidirectional communication channel and a broadcast channel indicates a unidirectional communication channel in which a user is not specified in a multicast.
• the ESG information may be processed by the terminal by a first step (hereinafter, referred to as a bootstrap step) of determining whether the terminal can use the ESG information or how the ESG information is obtained, a second step (hereinafter, referred to as an acquisition step) of acquiring and processing the ESG information by the terminal, and a third step (hereinafter, referred to as a update step) of updating the ESG information acquired by the terminal.
• a bootstrap step of determining whether the terminal can use the ESG information or how the ESG information is obtained
• a second step hereinafter, referred to as an acquisition step
• a third step hereinafter, referred to as a update step
• the terminal can acquire the information for the first step from the received signal and acquire the ESG information using the acquired information as trigger information.
• the information acquired by the first step is called bootstrap information.
• the terminal can acquire the ESG information using the bootstrap information and acquire the service information from the ESG information or access the contents.
• FIG. 1 is a view showing an example of the ESG information. The basic structure of the ESG information will be described with reference to FIG. 1.
• the ESG information may be provided to the user in sub-units.
• the sub-unit of the ESG information may be provided to the user in sub-units.
• ESG information is called a fragment.
• the example of FIG. 1 includes a service fragment, a schedule event fragment, a content fragment, a service bundle fragment, a purchase fragment, a purchase channel fragment and an acquisition fragment. Arrows of FIG. 1 represent reference relationships.
• the service bundle fragment can refer to the service fragment.
• the numeral described on each arrow denotes information on the number of fragments which can be referred to. For example, 0...n indicate that 0 to n (n is a natural number) fragments can be referred to.
• the service fragment includes information on a service provided to the user, for example, a service such as a conventional television channel.
• the service bundle fragment includes information on a service bundle.
• the service bundle may include, for example, a sports service bundle, a cinema service bundle and so on.
• the content fragment includes metadata of contents. For example, the type of the contents, such as audio/video (A/V), a text and an image of the contents, may be included in the content fragment.
• the schedule event fragment includes schedule information of contents of the service.
• the schedule event fragment includes the broadcast time of the content.
• the purchase fragment includes the purchase information of the service which can be purchased by the user.
• the purchase channel fragment indicates an interface via which the terminal or the user communicates with a purchase system.
• the purchase channel fragment includes information on a parameter associated with the purchase system or the management of a purchase channel.
• the acquisition fragment includes information associated with the access of the service or the contents.
• the user can access the service or the contents via the information associated with the acquisition fragment of the ESG information using the terminal and purchase the service or the contents.
• the ESG information may have sub-units called fragments. Each of the fragments is encoded, at least one fragment unit is encapsulated to build a larger unit, and the larger unit is transmitted.
• the encapsulated unit is called a container.
• the container of the ESG information may be transmitted/received according to a protocol for transmitting the ESG information. A system for transmitting/receiving the information and a transmission/reception protocol will be described later.
• the ESG information can be acquired from the bootstrap information.
• a process of receiving the bootstrap information of the service guide information will be described.
• An IP/MAC notification table (INT) of table information transmitted by at least one section in the broadcast signal transmitted via the broadcast channel includes mapping information between an internet protocol (IP) address of an IP stream and a packet identifier (PID) of a transport stream (TS) in the TS of the broadcast signal.
• IP internet protocol
• PID packet identifier
• TS transport stream
• the terminal can know the PID which can receive the bootstrap information, using a program number program_number of a program map table (PMT) in which the acquired IP address is defined.
• PMT program map table
• the terminal may decapsulate the packet and acquire the bootstrap information.
• the bootstrap information includes entry information which can receive the ESG information.
• the apparatus for receiving the ESG information may receive the entry information and receive the ESG information from the entry information via at least one of the broadcast channel or the interactive channel.
• the ESG information may be transmitted according to an asynchronous layered coding/layered coding transport (ALC/LCT) in a file delivery over unidirectional transport (FULTE) session.
• the terminal can acquire the bootstrap information of the ESG information from the IP address described in table information (e.g., the INT) according to the PSFSI.
• the bootstrap information can be acquired from 224.0.23.14 if the IP address is transmitted in the IP version 4 format according to a digital video broadcasting- handheld (DVB-H) system and the bootstrap information can be acquired from FF0X:0:0:0:0:0:0:12D if the IP address is transmitted in the IP version 6 format.
• DVD-H digital video broadcasting- handheld
• the ESG information can be transmitted/received via the broadcast channel or the interactive channel according to the entry information.
• the ESG information which is grouped and transmitted via the broadcast channel or the interactive channel will be described.
• the ESG information received via the broadcast channel or the interactive channel may be divided and transmitted according to the information included in the ESG information. Since the ESG information may include a large amount of information, the ESG information may be grouped according to several criteria and may be transmitted.
• the ESG information may be divided according to specific service identifiers (servicelDs) and provided to a user.
• the ESG information may be divided according to channels or grouped according to broadcasting stations for operating a plurality of channels and transmitted to the terminal.
• the ESG information may be grouped according to specific times and transmitted.
• the ESG information which can be provided within three hours from now may be grouped in the fragment units and transmitted.
• the ESG information may be grouped according to genres of contents. For example, the ESG information which is grouped according to the genres including comedy, action and drama may be transmitted to the user.
• the ESG information is divided according to the services which can be viewed according to the ages or the contents and the grouped fragments may be transmitted to the user.
• the size of multimedia information including audio/video information in the ESG information and more particularly an image file such as a videoclip may be very large.
• auxiliary data may be grouped as separate ESG information and provided to the user.
• a service provider identifier service provider ID
• the ESG information may be grouped according to the service providers and transmitted to the user.
• persons related to the contents, such as actors or directors, or contents of a series may be grouped and provided to the user as the ESG information.
• the number of criteria for grouping the ESG information is not necessarily one and the ESG information may be grouped according to a plurality of criteria.
• ESG information is grouped according to the above-described criteria and transmitted, a time necessary for preferentially receiving desired ESG information by the user can be shortened. If the user selectively receives the ESG information via the interactive channel, the amount of ESG information received may be reduced.
• grouping information of the grouped ESG information may be received via the interactive channel before the ESG information grouped according to the criteria is received.
• the criterion for grouping the ESG information is called partition information.
• FIG. 2 is a view showing an example of the type of the partition information of the
• the type indicating that the ESG information is grouped according to predetermined criteria is PartitionDeclarationType, the type may have the following elements and attributes.
• TimeGrouping indicates an element for grouping the ESG information according to the times of services provided. The attribute of this element is shown in FIG. 3.
• ServiceGrouping indicates an element for grouping the ESG information according to the services.
• GenreGrouping indicates an element for grouping the ESG information according to the genres and
• ParentalGuidanceGrouping indicates an element for grouping the ESG information according to parental guidance based on an age.
• AuxData indicates an element for grouping auxiliary data such as the above-described image file as the separate ESG information and ServiceProviderGrouping indicates an element for grouping the ESG information according to service providers. Since a minimum occurrence number (minOccurs) of each element is 0, if at least two elements occur at least one time, the partition information of the ESG information grouped according to at least two criteria may be used. That is, the partition information may be a criterion when at least two of the above-described grouping criteria are applied.
• FIG. 3 is a view showing an example of defining TimeGroupingType of the
• the TimeGrouping may have attributes including startTime indicating a start time and endTime indicating an end time. Accordingly, the ESG information may be grouped as information, which can be serviced between the start time and the end time, by the TimeGrouping and may be transmitted/received.
• the terminal may receive the grouped ESG information via the interactive channel. If the terminal receives the ESG information via the interactive channel, the entry information of the ESG information may include the location information of the server for providing the ESG information via the interactive channel.
• the terminal requests the list information of the ESG information to the server using the location information of the server, receives the list information of the ESG information from the server, and receives the ESG information which can be provided by the server.
• FIG. 4 is a view showing the list information of the ESG information which can be received by the terminal via the interactive channel.
• FIG. 4 shows information (ESGoIADescriptorType) describing the ESG information, which can be transmitted via the interactive channel, by a XML file.
• the list information described in the ESG information which can be provided via the interactive channel may become information on the container or information on the fragment included in the container.
• the container indicates a transmission object for transmitting the ESG information. If the fragments are combined and transmitted in the container units, the data transmission and the data processing are efficient. Since the ESG information is transmitted in the container or fragment units, the container may become one element of the ESG information.
• the container may include information (PartitionDeclaration) in which the ESG information is grouped according to predetermined criteria (a).
• the container may include fragment information which is a sub element.
• the fragment information may also have grouped information (d).
• the list information of the ESG information may include the information on the container (of which an element name is Container) and information on the fragment (of which an element name is Fragment).
• the information on the container may include at least one of the identifier of the information on the container (of which an attribute name is id), information indicating a file name of an information file of the container (of which an attribute name is con- tentLocation), version information of the information file of the container (of which an attribute name is version), the encoding type of the information file of the container (of which an attribute name is toi), and the length information of the file before coding and the length information of the file after coding (of which an attribute name is transfer length).
• the list information of the ESG information may have the identifier (id) for identifying the information (b) and the version (c).
• the list information of the ESG information may define the fragment type
• the fragment type may include an element for grouping the ESG information (d).
• the list information of the fragment includes at least one of the identifier (id) of the fragment list information, the version information of the fragment list information and the type information (fragmentType) of the fragment list inforation.
• FIGs. 5 to 9 are views showing a partition element (PartitionDeclaration) of the grouped ESG information shown in FIG. 4.
• FIG. 5 shows information of the PartitionDeclaration element of FIG. 4 when the
• ESG information is grouped in specific service identifier units.
• the ESG information of which the service identifier (service ID) is bcast://lambdastream.com/service/333 is grouped.
• FIG. 6 shows information of the PartitionDeclaration element of FIG. 4 when the
• ESG information is grouped according to the parental guidance based on the age.
• the ESG information of which a minimum age is 15, that is, the ESG information for 15-year-old and older, is grouped.
• FIG. 7 shows information included in the list information of the ESG information indicating that the ESG information can be grouped according to the criteria including the time and the service identifier and provided to the terminal via the interactive channel.
• the fragment having the element shown in FIG. 7 is grouped according to the specific times (start time 12345678 to end time 23456789) of the bcast://lambdastream.com/service/333 and is transmitted to the terminal.
• FIG. 8 shows an element included in the list information of the ESG information indicating that the auxiliary information of the ESG information is grouped and transmitted.
• true indicates an element indicating that the auxiliary information of the ESG information is grouped and transmitted.
• the list information file of the ESG information includes information indicating that the auxiliary information of the ESG information is grouped and provided to the terminal via the interactive channel.
• FIG. 9 shows the grouping information when the ESG information is grouped according to the service providers.
• FIG. 9 shows the grouping information when the ESG information which can be provided by a specific service provider is grouped.
• the example of FIG. 9 is the grouping information when the ESG information which can be provided by bcast://Vodaf one.com/ 1 of the specific service provider is grouped and transmitted to the terminal.
• the grouped ESG information element may be included in the list information of the ESG information by the types shown in FIG. 4.
• FIG. 10 is a view showing an apparatus for transmitting ESG information according to an embodiment of the present invention.
• the apparatus for transmitting the ESG information will be described with reference to FIG. 10. In the example of FIG. 10, it is assumed that the ESG information is transmitted via the broadcast channel.
• the broadcast transmitting system shown in FIG. 10 includes encoders 310, 320 and
• the encoders include a first encoder 310, a second encoder 320 and a third encoder 330.
• the first encoder 310 may encode contents according to audio, video and data according to a transmission/reception protocol such as an MPEG-2 TS.
• the second encoder 320 may encode data including the ESG information in an IP datagram format.
• the IP datagram indicates a signal processing format for sending a signal by a packet using the IP and includes a data container for transmitting a header including an IP address and information.
• the data container in the IP datagram of the packet unit may include data of video, audio and ESG information. That is, in the example of FIG. 10, the information can be transmitted by performing an IP datacasting method for dividing, compressing and transmitting a video signal, an audio signal and a data signal by packet units.
• the IP data may be encapsulated by a multiprotocol encapsulation (MPE) and embedded in the MPEG-2 TS.
• MPE multiprotocol encapsulation
• the MPE may become multi protocol encapsulation-forward error correction (MPE-FEC) section data. If the transmitted signal is arranged by the MPEG-FEC method, a carrier-to-noise (CN) ratio of the transmitted signal can be improved.
• the MPE-FEC data including the FEC or the MPE data not including the FEC may include the transmitted data of the IP data format.
• the second encoder 320 may encode the ESG information in the IP datagram format.
• the second encoder 320 may encapsulate the IP datagram including the ESG information by the MPE and multiplex the IP datagram by a time slicing method in order to reduce power consumption.
• the multiplexed signal may be converted into a transport stream and multiplexed with the MPEG-2 TS including the video or audio signal.
• the third encoder 330 may encode the packets encoded by the first encoder 310 or the second encoder, for example, the multiplexing information of the stream packets related to a program or a service.
• the multiplexing information includes table information on program specific information/service information (PSI/SI).
• the table information encoded by the third encoder 330 may include INT including the mapping information between the IP address encoded by the second encoder 320 and the PID including the IP datagram. Accordingly, the third encoder 330 may encode the INT information including IP address information of the bootstrap information and transmit the encoded INT information.
• the multiplexer 340 may multiplex the TSs output from the first encoder 310, the second encoder 320 and the third encoder 330 and output the multiplexed signal.
• the modulating and encoding unit 350 may modulate and encode the multiplexed signal.
• the modulating and encoding unit 350 may modulate and encode the multiplexed signal by the modulating and encoding unit 350 according to a transmission system and transmit a radio frequency (RF) signal.
• RF radio frequency
• the modulating and encoding unit 350 may use modulating methods and encoding methods of various broadcasting systems, for example, a transmission method such as a DMB method, a digital video broadcasting- handheld (DVB-H) method, an Advanced Television Systems Committee (ATSC) method according to a vestigial sideband (VSB) modulating method and an integrated services digital broadcasting-terrestrial (ISDB-T) method.
• a transmission method such as a DMB method, a digital video broadcasting- handheld (DVB-H) method, an Advanced Television Systems Committee (ATSC) method according to a vestigial sideband (VSB) modulating method and an integrated services digital broadcasting-terrestrial (ISDB-T) method.
• FIG. 11 is a view showing the modulating and encoding unit shown in FIG. 10.
• a digital video broadcasting- terrestrial/handheld (DVB-T/H) method may be used.
• a first encoder 410 includes an outer coder 411 and an outer interleaver 412.
• the first encoder 410 encodes and interleaves multiplexed data in order to improve transmission performance of the multiplexed signal.
• a Reed-Solomon code method may be used as an outer coding method and a convolution interleaving method may be used as an interleaving method.
• a second encoder 420 includes an inner coder 421 and an inner interleaver 422.
• the inner coder 421 and the inner interleaver 422 encode and interleave a signal to be transmitted in order to prevent an error from occurring in the transmitted signal.
• the inner coder may encode the transmitted signal according to a punctured convolution code.
• a native or in-depth interleaving method may be used according to the use of a memory based on a transmission mode of 2k, 4k or 8k.
• a mapper 430 may map the transmitted signal to a symbol according to a method such as 16QAM, 64QAM or QPSK in consideration of a transmission parameter signaling (TPS) and a pilot signal according to a transmission mode generated by a system signal generator 425.
• TPS transmission parameter signaling
• a frame builder 440 modulates the mapped signal by an orthogonal frequency division multiplex (OFDM) method and builds frames in which a guard interval is inserted into a data interval including the modulated signal.
• Each of the frames includes 68 OFDM symbols and four frames build a super frame.
• one symbol includes 6817 carriers in an 8k mode and includes 1705 carriers in a 2k mode.
• the guard interval is a cyclic continuation in which data of the data interval is duplicated, and the length thereof is changed according to the transmission mode.
• An OFDM frame includes a scattered pilot signal, a continual pilot signal and a TPS carrier.
• An example of the signal frames built by the frame builder of FIG. 11 is shown in FIG. 12.
• a digital/analog converter 450 may convert a digital broadcast signal including the guard interval and the data interval into an analog signal
• a transmitting unit 460 may transmit the analog signal converted by the digital/analog converter 450 by the RF signal. Accordingly, the encoded ESG of FIG. 10 may be transmitted by the transmitting apparatus of FIG. 11.
• FIG. 12 is a view showing the signal arrangement according to the result of building the frames by the frame builder in the example of FIG. 11.
• Tu denotes the number of effective useful carriers
• Dt denotes a distance between the scattered pilots in a time direction
• Df denotes a distance between the scattered pilots in a frequency direction.
• the distance Df between the scattered pilots in the frequency direction decides a delay range of ghost which can be estimated in a channel.
• FIG. 12 shows a location where the signal is interpolated when the signal built by the frame builder is received.
• FIG. 13 is a view showing an example of transmitting a broadcasting program, contents and data via a channel.
• a service using a DVB-H type slicing method and a service transmitted via a common channel of the DVB_T and the DVB-H may be transmitted by the transmitting apparatus shown in FIGs. 10 and 11.
• a program may be transmitted via the channels of the DVB-H and the DVB-T, and, according to the DVB-H, services are time-divisionally multiplexed and transmitted by the time slicing method.
• the contents including the video/audio and the ESG information may be included in the IP datagram according to the DVB-H system and changed to the MPE or MPE-FEC, and the MPEG-2 TS in which the MPE or MPE-FEC is embedded may be transmitted.
• FIG. 14 is a view showing an apparatus for receiving the ESG information.
• the apparatus for receiving the ESG information will be described with reference to FIG. 14.
• the apparatus for receiving the ESG information includes a receiving unit, an input unit 530, a memory 550, an output unit 560 and a controller 600.
• the receiving unit may include a broadcast receiving unit 510 for receiving a signal via the broadcast channel and a communication unit 520 for transmitting/receiving a signal via the interactive channel.
• the interactive channel of the communication unit 520 may be a wired/wireless channel for realizing bidirectional data communication.
• the broadcast receiving unit 510 receives and demodulates a broadcast signal and outputs the demodulated signal.
• the broadcast receiving unit 510 may include a tuner for selecting the broadcast signal received by the DVB-H method and a demodulator for demodulating the DVB-H broadcast signal according to the OFDM method.
• the broadcast receiving unit 510 demodulates the received broadcast signal and outputs the demodulated signal to the controller 600.
• the broadcast signal received by the broadcast receiving unit 510 includes the ESG information or the bootstrap information of the ESG information.
• the communication unit 520 may transmit/receive the signal via the interactive channel for performing the bidirectional communication.
• the communication unit 520 may demodulate the received signal in consideration of the modulating method of a communication system when the signal is received via the interactive channel and may modulate and transmit the signal to be transmitted according to the modulating method of the communication system when a communication system codec 670 outputs the encoded signal. For example, if the message according to the HTTP format including the identifier of the service provider is converted into the IP datagram as described above, the communication unit 520 may modulate the IP datagram according a communication system of the terminal and output the modulated IP datagram via the interactive channel.
• the controller 600 may include a system decoder 610, a decoder 620, an ESG information controller 630 and the communication system codec 670.
• the controller 600 may control the peripheral functional blocks shown in FIG. 14, such as the receiving unit, the input unit 530, the memory 550 and the output unit 560, and process control commands received from the user.
• the system decoder 610 may decode the received signal according to the encoding method of the transmitting/receiving system of the signal received by the broadcast receiving unit via the broadcast channel.
• the system decoder 610 may decode the output signal and obtain a file including the ESG information.
• the system decoder 610 may decode the ESG information or the bootstrap information of the ESG information from the information received via the broadcast channel and the signal according to the DVB-H system.
• the bootstrap information may include the location information of the list information of the ESG information which can be received via the interactive channel.
• the controller 600 may include the communication system codec 670 for transmission/reception of the signal to/from the interactive channel.
• the communication system codec 670 may code the signal to be transmitted via the interactive channel or decode the signal received from the communication unit 520 via the interactive channel. For example, when the communication unit 520 receives the signal including the ESG information from the interactive channel, demodulates the signal and outputs the demodulated signal, the communication system codec 670 decodes the signal such that the ESG information and the signal related thereto are output to an ESG information controller 630 or a decoder 620.
• the communication codec 670 may code or decode the IP datagram signal.
• the communication system codec 670 may output an IP datagram signal including the HTTP signal such that the server for storing the ESG information and the list information of the ESG information can be accessed.
• the communication unit 620 may modulate the IP datagram signal and transmit the modulated IP datagram signal via the interactive channel.
• the communication system codec 670 may decode the signal included the IP datagram signal and acquire the ESG information and the list information of the ESG information.
• the ESG information may be grouped and stored in the server and the partition information due to grouping may be included in the list information of the ESG information. The detailed example in which the communication system codec decodes the signal will be described in detail with reference to FIG. 15.
• the decoder 620 may decode video, audio and data information decoded by the system decoder 610 and the communication system codec 670 according to the system.
• the decoder 620 may include a video decoder, an audio decoder and a data decoder.
• the video decoder may decode, for example, video data of a H.264 format and the audio decoder may decode, for example, audio data of an AC-3 or ACC+ format.
• the decoder 620 may include a data decoder (not shown) for deciding program information/service information of a table format according to the PSFSI.
• the decoder 620 may decode the signal decoded by the system decoder 610 according to table information such as a program associate table (PAT), a program map table (PMT) or a network information table (NIT) or decode a broadcast signal according to a data broadcast.
• the decoder 620 may parse the INT, which is the table information, from the PMT.
• the INT includes the mapping information between the IP address of the IP stream and the PID of the transport stream in the transport stream.
• the decoder 620 may parse the INT so as to obtain the IP address from the bootstrap information of the ESG information and output the IP address to the ESG information controller 630. Accordingly, the apparatus for receiving the ESG information may obtain the ESG information via the broadcast channel or the interactive channel using the IP address.
• the ESG information controller 630 may receive the bootstrap information decoded by the system decoder 610 or the communication system codec 670 and allows the apparatus for receiving the ESG information to receive the ESG information using the bootstrap information. For example, the ESG information controller 630 may control the system decoder 610 to receive the ESG information via the broadcast channel according to the bootstrap information received by the system decoder 610 or control the communication system codec 670 to receive the ESG information or the list information of the ESG information via the interactive channel.
• the ESG information controller 630 may include a controller 631, a channel map storage unit 633, and a browser driving unit 635.
• the controller 631 may extract channel map information from the ESG information and the channel map information in the channel map storage unit 633.
• the controller 631 may control a session and control the browser driving unit 635 for driving an application or the like such that the received or stored ESG information is output.
• the browser driving unit 635 may generate, receive and output the message of the HTTP format to the output unit 560.
• the apparatus for receiving the ESG information may store the received ESG information in the memory 550.
• the memory 550 may store a file and content data transmitted by the ESG information and the IP datagram and store data before or after the decoding of the decoder 620.
• the input unit 530 may receive a control command input by the user and output the control command to the controller 600.
• the input unit 530 receives a selection signal for selecting any one of the partition information of the grouped ESG information from the user, the selection signal is output to the controller 600 such that the ESG information is received via the interactive channel according to the partition information selected by the user.
• the output unit 560 may output the audio or video signal output from the controller 600.
• the application driven by the ESG information controller 630 may output the ESG information via the output unit by an image or sound. Accordingly, the user can download a file or receive a web service or the ESG information via the application for the ESG information.
• FIG. 15 is a view showing the system decoder 610.
• the system decoder 610 decodes the broadcast signal demodulated by the broadcast receiving unit 510 in consideration of the encoding of the system.
• the 610 may process the ESG information demodulated by the broadcast receiving unit 510 as follows.
• the system decoder 610 may include an IP decapsulator 611, a user datagram protocol (UDP) decoder 612, a RTP decoder 613, a file delivery over unidirectional transport protocol (FLUTE) decoder 614, a container parser 615, a BiM parser 616 and an XML parser 617.
• IP IP
• UDP user datagram protocol
• RTP RTP
• FLUTE file delivery over unidirectional transport protocol
• container parser 615 a container parser 615
• BiM parser 616 a BiM parser 616
• XML parser 617 XML parser
• the system decoder 610 decodes content data transmitted in real time in consideration of the encoding of the system.
• the system decoder 610 may decode content data of the IP datagram format or a file including the ESG information.
• the UDP decoder 612 may decode the content data transmitted in real time from the IP decapsulated payload according to the UDP.
• the RTP decoder 613 may control a coding rate of the content data decoded by the UDP decoder 612 using a RTP control protocol (RTCP) and outputs coded content data.
• RTCP RTP control protocol
• the audio/video signal of the contents output from the RTP decoder 613 may be output to the decoder 620 including an audio decoder and a video decoder.
• the FLUTE decoder 614 may decode the data of a FLUTE (IETF RFC3926) format and output, for example, a file of binary data, image data and text.
• the data decoded by the FLUTE decoder 614 may include a file including the ESG information.
• the container parser 615 decodes a container-based file of the ESG information and outputs fragment-based information. If the ESG information is output in a BiM format according to the output result of the container parser 615, the BiM parser 616 decodes the data of the BiM format and transmits the decoded data to the XML parser 617.
• the XML parser 617 may decode the file of the XML format output from the container parser 615 or the BiM parser 617.
• the communication system codec 670 may decode the ESG in- formation file and the list information file (e.g., an XML file) of the ESG information transmitted according to the protocol such as the HTTP in the IP datagram.
• the list information file of the ESG information decoded by the communication system codec 670 may include the partition information of the grouped ESG information as shown in FIG. 4.
• FIG. 16 is a view showing an example of a protocol stack when ESG information or bootstrap information of the ESG information is delivered to the terminal.
• the left side of FIG. 16 denotes a protocol stack according to a broadcast network and the right side thereof denotes a protocol stack according to an interactive network.
• the delivered signal follows a protocol related to the MPEG-2 TS.
• the TS may follow a time slicing rule. If the TS is decoded, an MPE or MPE-FEC signal may be obtained.
• the TS may include information according to the PSI/SI.
• the TS includes a signal of the IP datagram format.
• the data according to the IP datagram follows the UDP or TCP.
• contents delivered by the UDP contents transmitted/received in a real-time streaming format may follow an RTP format and contents delivered in the file format may follow an FLUTE/ ALC format.
• the contents delivered in the same format become data according to an extensible Markup Language (XML), a binary or a text and may include the ESG information according to the XML or a session description protocol (SDP).
• XML is an object- oriented language and the ESG information may be transmitted in a state of being included in an object unit via the FLUTE.
• a physical layer and a data link layer of the signal received via the interactive channel may use a method according to a communication system.
• the example of FIG. 16 shows the communication system such as a global system for mobile telecommunication (GSM), a general packet radio service (GPRS) or a universal mobile telecommunications system (UMTS).
• GSM global system for mobile telecommunication
• GPRS general packet radio service
• UMTS universal mobile telecommunications system
• the ESG information transmitted according to the UDP may be received by a file according to the HTTP and a multimedia service such as video/audio may be output according to the RTP.
• the voice service or short message service (SMS) according to the communication system may be located on the data link layer by the protocol stack (denoted by Voice and SMS in FIG. 16).
• FIG. 17 is a view showing a method of receiving ESG information according to an embodiment of the present invention. The method of transmitting/receiving the ESG information according to the embodiment of the present invention will now be described with reference to FIG. 17.
• the list information of the ESG information which can be provided by the server is requested to the server which can communicate with the interactive channel (Sl 10).
• the list information including the partition information which is the criterion for grouping the ESG information is received via the interactive channel (S 120).
• the example of the list information refers to FIG. 4.
• a method of transmitting/receiving a signal and an apparatus for transmitting/ receiving a signal of the present invention can be used in broadcast and communication fields.

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• Engineering & Computer Science (AREA)
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• Signal Processing (AREA)
• Databases & Information Systems (AREA)
• Computer Security & Cryptography (AREA)
• Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

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• 2008
  • 2008-07-04 WO PCT/KR2008/003954 patent/WO2009005324A2/en active Application Filing
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