KR20090002820A - Method of receiving service guide information and apparatus for receiving service guide information - Google Patents

Abstract

A method of receiving service guide information and an apparatus for receiving service guide information are provided to receive service guide information selectively and first that a user needs when the service guide information is received from an interactive channel. List information of service guide information that a server can provide is requested to the server communicating with an interactive channel(S110). The list information including partition information which is the reference information in which the service guide information is grouped is received from a server through the interactive channel(S120). The grouped service guide information which is selected by a user is received among the service guide information grouped according to the partition information of the list information(S130).

Description

Method of receiving service guide information and apparatus for receiving service guide information}

The present invention relates to a service guide information receiving method and a service guide information receiving device.

Content refers to content or information including images, sounds, and text to a user via wired or wireless communication. Recent content is digitally produced and provided through various broadcast channels and interactive channels. For example, a user may download and watch content watched through a broadcast through the Internet. As the broadcasting system and the communication system are converged, a method of receiving the same contents from the broadcasting system and the communication system is being considered.

An object of the present invention is to provide a service guide information receiving method and a service guide information receiving device capable of obtaining service guide information efficiently.

In order to achieve the above object, the present invention provides a method for requesting list information of service guide information that a server can provide to a server that can communicate with an interactive channel, and the service guide information is grouped through the interactive channel from the server. Service guide information including receiving list information including partition information which is reference information, and receiving service guide information grouped by a user from among service guide information grouped according to the partition information of the list information Provide a receiving method. The present invention also provides a broadcast receiver for receiving bootstrap information including location information of list information of service guide information, transmitting a signal for requesting the list information to a server according to the location information, and providing service guide information from the server. A communication unit for receiving partition information, which is grouped reference information, and grouped service guide information, an input unit for receiving selection information from a user among the partition information, a display unit for displaying the grouped service guide information, and location information of the bootstrap information. Generates a signal for requesting the list information from the list and outputs the signal 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 receives the grouped service guide received by the communication unit. To control the display of information It provides service guide information receiving apparatus including a fisherman.

According to the present invention, when receiving the service guide information from the interactive channel, the service guide information required by the user can be preferentially and selectively received, and the service guide information can be efficiently received.

Hereinafter, the information related to the serviced content and access to the content is referred to as service guide information.

The service guide information includes at least one of schedule information for each service that allows the user to select a service, and information that allows the user to purchase, access, and store items in the terminal. The user may be provided with service guide information through the terminal, and may select or purchase a desired service. Herein, an interactive channel refers to a channel capable of bidirectional communication, and a broadcast channel or a broadcast channel refers to a unidirectional communication channel without designating a user during multicast.

The service guide information is a first process (hereinafter referred to as a bootstrap process) of recognizing whether the terminal can use the service guide information or how to obtain the service guide, and a second process of the terminal obtaining and processing the service guide information (hereinafter, Acquisition process, the terminal may be processed by a third process of updating the service guide information obtained by the terminal (hereinafter, an update process).

After obtaining the information for the first process from the received signal, the terminal may use the information as trigger information to obtain service guide information. Hereinafter, the information obtained in the first process is referred to as bootstrap information. The terminal may obtain respective service guide information through the bootstrap information, and may obtain information about each service or access content from the service guide information.

1 is a diagram illustrating an example of service guide information. Referring to Figure 1, the structure of the service guide information is as follows.

The service guide information may be provided to the user in subdivided units. Here, the subdivided sub-unit of the service guide information is called a fragment. 1 shows a service fragment, a schedule event fragment, a content fragment, a service bundle fragment, a service fragment, a purse channel fragment, and an accumulation acquistion) fragment. Arrows in FIG. 1 indicate reference relationships. According to the example shown in FIG. 1, the service bundle fragment may refer to a service fragment. The numbers illustrated above each arrow indicate the number of references for each fragment. For example, 0 ... n means that you can refer to other fragments from 0 to n (n is any natural number).

The service fragment contains information about a service provided to the user, for example, a service such as one conventional television channel. The service bundle fragment contains information about a service group. The service group may be, for example, a sports service bundle, a cinema service bundle, or the like. The content fragment includes metadata about the content. For example, the content fragment may include a type such as A / V, text, or image for the content in the content fragment.

The schedule event fragment includes schedule information about one content of the service. For example, the broadcast time of the content may correspond to this. The furniture fragment includes information related to the purchase of a service that a user can purchase. The aperture channel fragment refers to an interface through which a terminal or a user communicates with a purchasing system. The aperture channel fragment includes information related to the purchase system and parameters related to the purchase system.

An Acquisition Fragment contains information related to access of a service or content. A user may access and purchase a service or content through information related to an acquisition fragment through service guide information from a terminal.

As such, the service guide information may have a lower unit called a fragment. Each fragment may be encoded so that one or more fragment units may be encapsulated or formed into one larger unit and transmitted. This encapsulated unit is called a container. The container of the service guide information may be transmitted and received according to a protocol for transmitting the service guide information. A system and a transmission / reception protocol for transmitting and receiving this information are illustrated below.

Meanwhile, as described above, the service guide information may be obtained from the bootstrap information. A process of receiving the bootstrap information of the service guide information will be described below.

In the table information in which one or more sections of the broadcast signal transmitted through a broadcast channel are transmitted to a section, the IP / MAC notification table (INT) indicates the IP address and transport stream of the IP (internet protocol) stream in the transport stream of the broadcast signal. Contains mapping information between PIDs (packet identifiers). When the terminal obtains the IP address for receiving the bootstrap information of the service guide information from the INT that is the mapping information, the terminal may receive the bootstrap information from the program number (program_number) on the PMT in which the obtained IP address is defined. It can be seen. When the packet corresponding to the packet ID is encapsulated in the transmission signal, the terminal may decapsulate the packet to obtain bootstrap information. The bootstrap information includes entry information for receiving service guide information. The apparatus for receiving service guide information may receive the entry information and receive the service guide information from at least one of a broadcast channel and an interactive channel from the entry information. For example, the service guide information may be transmitted according to Asynchronous Layered Coding / Layered Coding Transport (ALC / LCT) in a FLUTE (File Delivery over Unidirectional Transport) session running on an IP protocol. The terminal can obtain the bootstrap information for the service guide information from the IP address described in the table information (for example, INT) according to the PSI / SI. For example, the IP address is in the IP version 4 format according to the DVB-H system. Bootstrap information can be obtained from 224.0.23.14 when transmitted via FF0X: 0: 0: 0: 0: 0: 0: 12D when using IP version 6.

According to the above-described entry information, the service guide information may be transmitted and received through a broadcast channel or an interactive channel. Hereinafter, the service guide information grouped from the broadcast channel and the interactive channel will be described. The service guide information provided from the broadcast channel and the interactive channel may be divided and transmitted according to the classification of the information included in the service guide information. Since the service guide information may include a great deal of information, the service guide information may be classified and transmitted according to several criteria.

For example, the service guide information may be divided and provided to the user according to a specific service identifier (serviceID). For example, the service guide information may be separated for each channel, or the service guide information may be grouped according to broadcasting stations operating a plurality of channels and transmitted to the terminal. Alternatively, the service guide information may be grouped and transmitted according to a specific time. For example, service guide information, which can be provided within the next 3 hours including the current time, may be grouped and transmitted in units of fragments. The service guide information may be grouped by genre of content. For example, service guide information grouped by genre such as comedy, action, drama, etc. may be transmitted to the user according to the content of the content.

The service guide information may classify the service guide information for each viewable service or content according to age group, and transmit fragments according to each grouping to the user. Among the service guide information, multimedia information including audio / video information, especially image files such as videoclips, can be very large. Accordingly, such ancillary data may be grouped into separate service guide information and provided to the user. Another criterion for grouping service guide information may be a service provider identifier. In this case, service guide information may be grouped according to each service provider and transmitted to the user. In addition, a more detailed classification may be performed by separately grouping content related to content such as actors or directors or series, and providing the user with service guide information. The grouping classification criteria of the above service guide information need not necessarily be one, and the service guide information may be grouped by overlapping application.

When the service guide information is grouped and transmitted according to the above-described criteria, the user may shorten the time to first receive the desired service guide information. In addition, if the user selectively receives the service guide information through the interactive channel, the amount of received service guide information may be reduced.

When the user receives the service guide information classified according to the above criteria through the terminal through the interactive channel, the classification information for the service guide information grouped according to the criteria is also displayed in the interactive channel before receiving the service guide information grouped according to the criteria. Can be received via Hereinafter, a criterion in which service guide information grouped and classified is divided and referred to as partition information.

2A illustrates an example of defining a type of partition information of service guide information illustrated above. If the type indicating that the service guide information is classified and grouped according to a predetermined criterion is PartitionDeclarationType, the type may have the following elements and attributes.

TimeGrouping represents an element grouping service guide information according to the time of a provided service. The attribute of this element is illustrated in FIG. 2B.

ServiceGrouping represents an element grouping service guide information according to a service. GenreGrouping is an element grouping service guide information according to a genre, and ParentalGuidanceGrouping is an element grouping according to an audience rating according to age. AuxData is an element grouping additional information according to the above-described image file into separate service guide information, and ServiceProviderGrouping represents an element grouped according to a service provider. Since the minimum number of occurrences (minOccurs) of each element is 0, when two or more elements exist one or more times, they may be partition information for service guide information grouped in each of the two or more classification criteria. That is, the above partition information may be a criterion to which the above-described grouping criterion is overlapped.

2B discloses an example of defining a type (TimeGroupingType) for a TimeGrouping element. TimeGrouping may have a startTime indicating a start time and an endTime attribute indicating an ending time. Accordingly, service guide information may be transmitted and received by grouping information that may be serviced between a start time and an end time by TimeGrouping.

As described above, the terminal may receive grouped service guide information, and is particularly useful when receiving from an interactive channel. When the terminal receives the service guide information through the interactive channel, the entry information of the service guide information may include location information of a server providing the service guide information through the interactive channel. The terminal may request list information on the service guide information from the server using the location information of the server, receive the list information on the service guide information from the server, and then receive the service guide information that the server may provide. have.

3 illustrates list information of service guide information that a terminal may receive from an interactive channel. 3 shows information (ESGoIADescriptorType) describing service guide information that can be transmitted through an interactive channel in a file in XML format.

The list information described in the service guide information that can be provided through the interactive channel in FIG. 3 may be information about a container or information about fragments included in the container. A container means a transport object to which service guide information is transmitted. If a fragment is bundled and transmitted in a container unit, the container is efficient in data transmission and data processing. Since the service guide information is transmitted in a container or a fragment unit, the container may be one element of the service guide information.

The container may include information (PartitionDeclaration) in which service guide information is classified and grouped according to a predetermined criterion (a). The container may have fragment information which is a lower element. Each fragment information may also have grouping information (d).

In the list information on the service guide information, the information on the container (element name is Container) may include information on the fragment (element name is Fragment).

Information about a container includes identifier information of the information about the container (attribute name is id), information indicating the file name of the information file for the container (attribute name is contentLocation), and version information of the information file about the container (attribute name is version). At least one of a type of encoding of the information file for the container (attribute name is toi), size information of the file before coding (attribute name is original length), and size information of the file after coding (attribute name is transferlength). It can have The list information of the service guide information may have an identifier (id) (b) and a version (c) identifying the information.

The list information of the service guide information may define a type (FragmentType) for the fragment. The fragment type may include an element that is information in which service guide information is grouped (d). The list information about the fragment includes at least one of an identifier (id) for the fragment list information, a version information for the fragment list information (version), and a type information (fragmentType) for the fragment list information.

4A to 4E illustrate examples of partition information (PartitionDeclaration) of the grouped service guide information illustrated in FIG. 3.

FIG. 4A illustrates information included in the PartitionDeclaration element of FIG. 3 when service guide information is grouped by a specific service identifier unit. In FIG. 4A, service guide information having a service ID (bcast: //lambdastream.com/service/333) is grouped.

FIG. 4B illustrates information included in the PartitionDeclaration element of FIG. 3 when the service guide information is grouped according to an audience rating according to age. FIG. 4B may indicate that service guide information having a minimum viewing age of 15 years, that is, viewable for 15 years or more is grouped.

4C illustrates the information included in the list information of the service guide information indicating that the service guide information can be provided to the terminal through the interactive channel by grouping by the criteria of time and service identifier. The fragment having the element illustrated in FIG. 4C may be provided to the terminal by being grouped according to a specific time (start time 12345678 to end time 23456789) among the service identifier bcast: //lambdastream.com/service/333.

FIG. 4D illustrates an element included in list information of service guide information indicating that additional information about service guide information may be grouped and transmitted. In FIG. 4D, true is an element illustrating that additional information of service guide information is grouped and transmitted. Accordingly, when grouping information is included in FIG. 4D, the list information file of the service guide information includes information indicating that additional information of the service guide information may be grouped and provided to the terminal through the interactive channel.

4E illustrates grouping information when grouping according to a service provider among service guide information. 4E shows grouping information when grouping service guide information that can be provided by a specific service provider. 4E is grouping information when grouping service guide information that can be provided by a specific service provider bcast: //vodafone.com/1 and providing the same to a terminal.

Accordingly, the service guide information elements grouped as illustrated in FIGS. 4A to 4E may be included in the list information of the service guide information in each type illustrated in FIG. 3.

5 is a diagram illustrating an embodiment of a transmitting device for transmitting service guide information. An embodiment of an apparatus for transmitting service guide information will now be described with reference to FIG. 5. In the example of FIG. 5, it is assumed that service guide information is transmitted through a broadcast service.

The broadcast transmission system disclosed in FIG. 5 includes an encoder 310, 320, 330, a multiplexer 340, and a modulator 350. The encoding unit includes a first encoding unit 310, a second encoding unit 320, and a third encoding unit 330.

The first encoding unit 310 may encode content according to audio, video, and data according to a transmission / reception protocol such as, for example, a transport stream of MPEG-2.

The second encoder 320 may encode data including service guide information in an IP datagram format. The IP datagram refers to a signal processing format in which a signal is transmitted in a packet by an internet protocol, and includes a header including an IP address and a data container for transmitting information. The data container of the packet-based IP datagram may include data of video, audio, and service guide information. That is, in the example of FIG. 5, the video signal, the audio signal, and the data signal may be transmitted by performing an IP protocol (IP datacasting) method of dividing and compressing the video signal, the audio signal, and the data signal in packet units. IP data may be encapsulated in multi-protocol encapsulation (MPE) and then embedded in an MPEG-2 trasnport stream (TS). The MPE may be multi-protocol encapsulation-forward error correction (MPE-FEC) section data added with a forward error correction code (FEC). By arranging the transmission signal by the MPE-FEC scheme, it is possible to improve the carrier-to-noise (CN) ratio of the transmission signal. MPE-FEC data including FEC or MPE data without FEC may include transmission data in an IP data format.

The second encoding unit 320 may encode the service guide information in the IP datagram format. The second encoder 320 may encapsulate the IP datagram including the service guide information into the MPE, and then multiplex it with a time slicing technique to reduce power consumption. The multiplexed signal can be converted to a transport stream and multiplexed with MPEG-2 transport stream packets carrying video or audio signals.

The third encoder 330 may encode multiplexed information of packets encoded by the first encoder 310 or the second encoder, for example, stream packets related to a program or a service. The multiplexing information includes table information about PSI / SI (Program Specific Information / Service Information). The table information encoded by the third encoding unit 330 includes INT (IP / MAC Notification table) including mapping information of an IP address encoded by the second encoding unit 320 and a packet ID (PID) including an IP datagram. ) May be included. Accordingly, the third encoding unit 330 may encode and transmit INT information including IP address information about bootstrap information.

The multiplexer 340 multiplexes and outputs a transport packet output from the first encoding unit 310, the second encoding unit 320, and the third encoding unit 330, and the modulation and encoding unit 350 The multiplexed signal can be modulated, encoded and transmitted.

When the multiplexer 340 multiplexes and outputs the packet data encoded by the first encoder 310, the second encoder 320, and the third encoder 330, the modulation and coding unit 350 may multiplex the signal. The signal may be modulated and encoded according to the modulation and coding unit 350 according to the transmission system and then transmitted as an RF signal. The modulation and coding unit 350 may follow modulation schemes and encoding schemes of various broadcasting systems. For example, a transmission scheme such as an ATSC scheme and an ISDB-T scheme according to a DMB scheme, a DVB-H scheme, or a VSB modulation scheme may be used. Can be used.

FIG. 6 is a diagram illustrating the modulation and coding unit disclosed in FIG. 5. In FIG. 6, the modulation and coding scheme may follow, for example, a digital video broadcasting-terrestial / handheld (DVB-T / H) scheme.

The first encoder 410 includes an outer coder 411 and an outer interleaver 412. The first encoder 410 may encode and interleave the multiplexed data to improve transmission performance of the multiplexed signal. For example, a Reed-Solomon code conversion method may be used as an outer coding method, and a convolution interleaving method may be performed as an interleaving method.

The second encoder 420 includes an inner coder 421 and an inner interleaver 422. The inner coder 421 and the inner interleaver 422 perform interleaving by recoding a signal to be transmitted in preparation for an error in the transmission signal. The inner coder can encode the transmission signal according to the punctured convolution code, and the inner-interleaving scheme is based on the memory usage according to the transmission modes of 2k, 4k and 8k. Native or in-depth interleaving schemes may be used.

The mapper 430 may transmit a transmission signal such as 16QAM, 64QAM, QPSK, etc. in consideration of a pilot signal and a transmission parameter signal (TPS) according to a transmission mode generated by the system signal generator 425. You can map them to symbols according to the method.

The frame forming unit 440 modulates the mapped signal by an orthogonal frequency division multiplex (OFDM) scheme and forms a frame in which a guard interval is inserted in a data section including the modulated signal. Each frame contains 68 OFDM symbols and four frames form a super frame. For example, one symbol includes 6817 carriers in 8k mode and 1705 carriers in 2k mode. The guard interval is a cyclic continuation in which data of the data interval is copied, and its length varies depending on the transmission mode. The OFDM frame includes a distributed pilot signal, a continuous pilot signal and a TPS carrier, respectively. An example of a signal frame by the frame forming unit of FIG. 6 is disclosed in FIG. 7.

The digital analog converter 450 converts a broadcast signal in a digital format having a guard interval and a data interval into an analog signal, and the transmitter 460 converts the analog signal converted by the digital analog converter 450 into a radio frequency (RF). ) Can be transmitted by a signal. Therefore, the service guide information encoded in FIG. 5 may be transmitted by the example of the transmitting apparatus of FIG. 6.

FIG. 7 is a diagram illustrating signal arrangement according to a result of the frame forming unit forming the frame in the example of FIG. 6. In Fig. 7, Tu denotes the number of usable subcarriers, Dt denotes the distance between distributed pilots on the time axis, and Df denotes the distance between distributed pilots on the frequency axis, respectively. The distance Df between the distributed pilots in the frequency domain determines the delay range of the ghost that can be estimated in the channel. 7 shows up to the position of a pilot to interpolate when a signal formed by the frame forming unit is received.

Therefore, when receiving the signals arranged in this way, the interpolation is performed at the pilot position, and the symbols are arranged so that the same pilot pattern appears for every four input symbols. That is, if the first input symbol (t = 1) is the same distributed pilot signal as the symbol input at t = 5, the terminal receiving the signal is a symbol received at t = 2, 3, 4 at the position of the distributed pilot signal. Time interpolation can be performed for.

Further, since the symbol input at t = 6 has the same distributed pilot pattern as the symbol input at t = 2, the terminal receiving the signal is a distributed pilot of the symbol input at t = 6 and the symbol input at t = 2. Time interpolation may be performed on signals t = 3, 4, and 5 in position.

When the signal is received at time t = 7 and then interpolated in the above manner, the symbols input at t = 4 are distributed pilots at four subcarrier positions, and thus the frequency of the input symbol at t = 4. The interval between the distributed pilot signals in the region is reduced to one quarter of the interval between the original distributed pilot signals, and a symbol input at t = 4 has a pattern in which the distributed pilot signals are located at four subcarrier positions. Thus, the terminal receiving the signal can have the effect of processing the signal as more pilot signals are located in the symbol. Therefore, when the signal is transmitted using the continuous pilot signal and the distributed pilot signal in this way, the channel compensation can be adaptively performed according to the state of the reception channel upon receiving the signal.

8 is a diagram illustrating an example in which a broadcast program, content and data are transmitted through a channel. According to the transmission apparatus disclosed in FIGS. 5 and 6, a service to which a type slicing scheme is applied to DVB-H and a service transmitted on a common channel of DVB-T and DVB-H may be transmitted. Programs can be transmitted according to channels of respective DVB-H and DVB-T. In case of DVB-H, each service can be transmitted by time division multiplexing by time slicing. Content and service guide information, including video / audio, can be included in IP datagrams by the DVB-H system and transformed into MPE or MPE-FEC and transmitted to MPEG-2 TS with the modified MPE or MPE-FEC embedded. have.

9 is a diagram illustrating a receiving device for receiving service guide information. An apparatus for receiving service guide information will be described below with reference to FIG. 9. The apparatus for receiving service guide information includes a receiver, an input unit 530, a storage unit 550, a display unit 560, and a controller 600. The receiver may include a broadcast receiver 510 that receives a signal from a broadcast channel, and a communication unit 520 that receives a signal from an interactive channel and transmits and receives a signal through the interactive channel. For example, the channel that the communication unit 520 interacts with may be a wired or wireless channel capable of data communication in both directions.

The broadcast receiver 510 receives, demodulates and outputs a broadcast signal. For example, the broadcast receiver 510 may include a tuner for selecting a broadcast signal received in the DVB-H scheme and a demodulator for demodulating the broadcast signal in the DVB-H format according to the OFDM scheme. The broadcast receiver 510 demodulates the received broadcast signal and outputs the demodulated signal to the controller 600. The broadcast signal received by the broadcast receiver 510 includes service guide information or bootstrap information of the service guide information.

The communication unit 520 may transmit and receive a signal through an interactive channel capable of bidirectional communication. When the communication unit 520 receives the signal through the interactive channel, the received signal is demodulated in consideration of the modulation method of the communication system, and when the communication system decoding unit 670 outputs the encoded signal, Depending on the modulation method, the output signal can be modulated and transmitted. For example, the communication unit 520 may receive list information on the service guide information grouped through the interactive channel and receive the service guide information from the interactive channel according to the received list information.

The controller 600 may include a system decoder 610, a decoder 620, a service guide information controller 630, and a communication system decoder 670. The controller 600 may control the surrounding functional blocks illustrated in FIG. 9, for example, the receiver, the input unit 530, the storage unit 550, the display unit 560, and may process a control command received from the user. have.

The system decoder 610 may decode the received signal in consideration of an encoding method of a transmission / reception system of a signal received by the broadcast receiver through a broadcast channel. When the broadcast receiver 510 demodulates and outputs a broadcast signal, the system decoder 610 may obtain a file including service guide information by decoding the output signal. The system decoder 610 may decode bootstrap information of service guide information or service guide information from a signal received through a broadcast channel, for example, a signal according to a DVB-H system. The bootstrap information may include location information in which list information of service guide information that can be received from the interactive channel is stored.

The controller 600 may include a communication system decoding unit 670 to transmit and receive an interactive channel. The communication system decoding unit 670 may encode a signal to be transmitted through the interactive channel or may decode a signal received from the interactive channel from the communication unit 520. For example, when the communication unit 520 receives a signal including service guide information from the interactive channel, demodulates it, and outputs the signal, the communication system decoding unit 670 decodes the signal to display the service guide information and the related signal. May be output to the service guide information controller 630 or the decoder 620. The communication system decoding unit 670 may encode or decode a signal in an IP datagram format. For example, the communication system decoding unit 670 receives a signal demodulated by the communication unit 520, decodes the data in the IP datagram format, or encodes and outputs the signal in the IP datagram format to the communication unit 620. Can be. For example, the communication system coder 670 outputs a signal in the form of an IP datagram including a signal in the form of HTTP so as to access a server storing the service guide information and the list information of the service guide information. The communication unit 620 may modulate a signal of an IP datagram format and transmit the modulated signal to the interactive channel. When the communication unit 620 receives and outputs a signal including service guide information and list information of the service guide information from the interactive channel, the communication system decoding unit 670 decodes the signal included in the IP datagram format. The service guide information and the list information of the service guide information can be obtained. The above service guide information may be grouped and stored in the above server, and partition information due to grouping may be included in list information of the service guide information. A detailed example in which the communication system decoding unit decodes the signal is described in detail with reference to FIG. 10.

The decoder 620 may decode the video, audio and data information decoded by the system decoder 610 and the communication system decoder 670 according to the system. The decoder 620 may include a video decoder, an audio decoder, and a data decoder. The video decoder can decode and output the video data of H.264 format, for example, and the audio decoder can decode audio data such as the AC-3 and AAC + format. In addition, the decoder 620 may include a data decoder (not shown) capable of decoding table program information / service information according to PSI / SI. For example, the decoder 620 may decode a signal based on table information such as a program associate table (PAT), a program map table (PMT), a network information table (NIT), etc. from the signal decoded by the system decoder 610, The broadcast signal according to the data broadcast can be decoded. The decoder 620 may parse INT (IP / MAC Notification table), which is table information, from the PMT. INT contains mapping information between the IP address of the IP stream and the PID of the transport stream in the transport stream. When the decoder 620 parses the INT and obtains an IP address from the bootstrap information of the service guide information, the decoder 620 may output the IP address to the service guide information controller 630. Therefore, the service guide receiving apparatus can obtain the service guide information from the broadcast channel or the interactive channel using the IP address.

The service guide information controller 630 receives bootstrap information decoded by the system decoder 610 or the communication system decoder 620, and the service guide information receiving apparatus receives the service guide information by using the bootstrap information. You can do that. For example, the service guide information controller 630 may allow the system decoder 610 to receive service guide information from a broadcast channel or the communication system decoder 670 according to the bootstrap information received by the system decoder 610. It is possible to control to receive the service guide information and the list information of the service guide information from the interactive channel.

The service guide information controller 630 may include a controller 613, a channel map storage 633, and a browser driver 635. The controller 631 may extract channel map information from the service guide information and store the channel map information in the channel map storage unit 633. The controller 631 may control a session and control a browser driver 635 for driving an application to display the received or stored service guide information. The browser driver 635 may generate and output a message in an HTTP format, or may be received and displayed by the display unit 560.

The apparatus for receiving service guide information may store the received service guide information in the storage unit 550. The storage unit 550 may store service guide information, a file transmitted as an IP datagram, content data, and may store data before and after the decoder 620 decodes the data. The input unit 530 may receive a control command input by the user and output the control command to the controller 600. For example, when the input unit 530 receives a selection signal for selecting any one of partition information of the grouped service guide information, the input unit 530 outputs the selection signal to the control unit 600 to display the service guide information according to the partition information selected by the user. Can be received over an interactive channel. The display unit 560 may output an audio or video signal output from the controller 600. In addition, the application driven by the service guide information controller 630 may output the service guide information as an image and sound through the display unit 560. Therefore, a user may download a file, provide a web service, or receive service guide information through an application for service guide information.

10 is a diagram illustrating the system decoder 610 in detail.

The system decoder 610 may decode in consideration of encoding of a system in which a broadcast signal demodulated by the broadcast receiver 510 is encoded. The system decoder 610 may process the service guide information demodulated by the broadcast receiver 510 as follows.

The system decoder 610 may include an IP decapsulator 611, a user datagram protocol (UDP) decoder 612, an RTP decoder 613, and a file delivery over unidirectional transport protocol (FLUTE) decoder 614. ), A container parser 615, a beam parser 616, and an XML parser 617.

The system decoder 610 may decode content data transmitted in real time in consideration of system encoding. For example, the system decoder 610 may decode a file including content data and service guide information transmitted in an IP datagram format.

An example in which the system decoding unit 610 decodes content data or service guide information in the IP datagram format is as follows. First, the IP decapsulator 611 decapsulates the content data included in the payload of the IP packet with reference to the header of the IP packet. The UDP (user datagram protocol) decoder 612 may decode content data transmitted in real time from the IP decapsulated payload according to the user datagram protocol (UDP). The RTP decoding unit 613 may output the content data encoded so that the coding rate is controlled by the RTP control protocol (RTP control protocol) for the content data decoded by the user datagram protocol (UDP) decoding unit 612. The audio / video signal of the content output from the RTP decoder 613 is output to a decoder 620 including an audio decoder and a video decoder, respectively.

When the system decoding unit 610 decodes the data for the service guide information in the file format, the data decoded by the UDP decoding unit 612 is output after the FLUTE decoding 614.

The FLUTE decoding unit 614 may decode data in FLUTE (IETF RFC3926: File Delivery over Unidirectional Transport) format and output files such as binary data, image data, and text. The data decoded and output by the FLUTE decoding unit 614 may include a file including service guide information.

The container parser 615 decodes the container unit file among the service guide information and outputs the fragment unit information. When the service guide information is output in the beam BiM format according to the output of the container parser 615, the beam BiM parser 616 decodes the data according to the BiM format and transmits the data to the XML parser 617. . The XML parser 617 may decode an XML format file output by the container parser 615 or the BiM parser 616.

If the communication system decoding unit 670 decodes the received signal to display the service guide information, the communication system decoding unit 670 transmits the service guide information file or the service guide in accordance with a protocol such as HTTP in the IP datagram. The list information file (for example, an XML file) for the information can be decoded. The list information file for the service guide information decoded by the communication system coder 670 may include partition information of the grouped service guide information as illustrated in FIG. 3.

FIG. 11 illustrates an example of a protocol stack that is followed when service guide information or bootstrap information of service guide information is delivered to a terminal. In FIG. 11, the left side is a protocol stack according to a broadcast network, and the right side is a protocol stack according to an interactive network.

First, a protocol according to a broadcast network will be described.

For example, if service guide information is transmitted according to the DVB-T / H format, the transmitted signal follows a protocol related to MPEG-2 TS (Transport Stream).

The transport stream may follow a time slicing rule, and when the transport stream is decoded, the transport stream may be a signal according to a multiprotocol encapsulation (MPE) or multiprotocol encapsulation-forward error correction (MPE-FEC) format. Information according to PSI / SI may be delivered to the transport stream.

The transport stream contains signals in the form of IP datagrams. The data according to the IP datagram follows the protocol of UDP or TCP. Content transmitted / received in the form of real-time streaming among the contents delivered through UDP may be in accordance with the RTP format, and content delivered in the form of a file may be in FLUTE / ALC format. Streaming content according to RTP may be encoded and transmitted according to H.264 / AAC +. On the other hand, the content delivered in the form of a file may be data according to XML (eXtensible Markup Language), binary, text, or the like, or may include service guide information according to XML, a Session Description Protocol (SDP), and the like. XML (eXtensible Markup Language) is an object-oriented language, and service guide information may be included and transmitted in an object unit through FLUTE.

When service guide information is received through the interactive channel, the physical layer and the data link layer of the signal received through the interactive channel may use a scheme according to a communication system. 11 illustrates a communication system such as a global system for mobile telecommunication (GSM), a general packet radio service (GPRS), and a universal mobile telecommunication system (UMTS).

The service guide information transmitted according to the UDP format among the protocol formats according to the IP datagram can be received as a file according to HTTP. Multimedia services such as video / audio may be expressed according to RTP. For reference, a voice service or a text service according to a communication system may be located on the data link layer with a corresponding protocol stack (indicated by SMS and Voice in FIG. 11), respectively.

12 is a diagram illustrating an embodiment of a method of receiving service guide information according to the present invention. An embodiment of a method of transmitting and receiving service guide information according to the present invention will be described with reference to FIG. 12.

Requesting the list information of the service guide information that the server can provide to the server that can communicate with the interactive channel (S110).

Through this interactive channel, list information including partition information which is reference information grouped with service guide information is received (S120). See FIG. 3 for an example of list information.

The user receives the grouped service guide information according to the user's selection among the service guide information grouped according to the partition information of the above list information (S130).

1 is a diagram showing an example of a data model for service guide information;

2A is a diagram illustrating an example of defining a type of partition information of service guide information illustrated above.

2B illustrates an example of defining a type (TimeGroupingType) for a TimeGrouping element.

3 is a diagram illustrating list information of service guide information that a terminal can receive from an interactive channel;

4A through 4E are diagrams illustrating partition information (PartitionDeclaration) of the grouped service guide information illustrated in FIG. 3.

5 is a diagram illustrating an embodiment of a transmitting device for transmitting service guide information;

FIG. 6 is a diagram illustrating the modulation and coding unit disclosed in FIG. 5. FIG.

FIG. 7 is a diagram illustrating signal arrangement according to a result of the frame forming unit forming a frame in the example of FIG. 6;

8 illustrates an example in which a broadcast program, content and data are transmitted through a channel.

9 is a diagram illustrating a receiving device for receiving service guide information.

FIG. 10 is a diagram illustrating a system decoding unit of FIG. 9. FIG.

11 illustrates a protocol stack.

12 is a diagram showing an embodiment of a method of receiving service guide information according to the present invention.

Claims (4)

Requesting a server capable of communicating with an interactive channel, list information of service guide information that the server can provide; Receiving list information from the server, the list information including partition information which is reference information grouped by service guide information through an interactive channel; And And receiving service guide information grouped according to a user's selection among service guide information grouped according to the partition information of the list information. The method of claim 1, And the partition information is at least one of a service identifier, a service time, a genre of the content, an age for viewing the content, additional information of the content, and a service provider identifier. A broadcast receiver which receives bootstrap information including location information of list information of service guide information; A communication unit which transmits a signal for requesting the list information to a server according to the location information and receives partition information and grouped service guide information which are reference information grouped by service guide information from the server; An input unit for receiving selection information by the user among the partition information; An expression unit for displaying the grouped service guide information; And Generates a signal for requesting the list information from the location information of the bootstrap information and outputs the signal to the communication unit, and controls the communication unit to receive the grouped service guide information according to the selection information received by the input unit, and the communication unit And a control unit for controlling to display the grouped service guide information received by the apparatus. The method of claim 3, wherein And the partition information is at least one of a service identifier, a service time, a genre of content, an age of viewing content, additional information of content, and a service provider identifier.

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