KR20100022912A - Method and apparatus for transmitting broadcast data and method and apparatus for receiving broadcast data - Google Patents

Abstract

PURPOSE: A broadcast data transmission method, a broadcast data transmission device, a broadcast data reception method, and a broadcast data reception device are provided to perform operations when a broadcast data reception device is initially operated, a reception location is changed, the version of service composition information is changed or the broadcast data reception device is initialized. CONSTITUTION: A broadcast data reception method comprises the following steps: a step of obtaining a first signaling information which directs an ensemble through which composition information of a broadcast service(S1810); a step of obtaining the service composition information based on the first signaling information(S1820); a step of providing the broadcast service based on the service composition information and the first signaling information(S1830).

Description

Method and apparatus for transmitting broadcast data and method and apparatus for receiving broadcast data {Method and apparatus for transmitting broadcast data and method and apparatus for receiving broadcast data}

The present invention relates to a method and apparatus for transmitting data and a method and apparatus for receiving data, and more particularly, to a method and apparatus for transmitting broadcast data and a method and apparatus for receiving broadcast data.

Today, with the development of information and communication technology, broadcasting services are provided through various media. In particular, with the development of mobile communication, broadcast services using mobile terminals are in the spotlight.

On the other hand, as the number of broadcasting stations providing broadcast services increases, the number of channels that viewers can select is diversified, resulting in an increase in the number of viewers who subscribe to the broadcast service.

As such, the development of mobile terminals and the diversification of broadcast contents have become a major factor in developing broadcast systems.

An object of the present invention is to provide a method and apparatus for transmitting broadcast data and a method and apparatus for receiving broadcast data.

One aspect of an embodiment of the present invention is a method for transmitting broadcast data, comprising: generating configuration information of a broadcast service to be provided using broadcast packets transmitted through at least one frequency channel; Generating first signaling information indicating an ensemble in which the service configuration information is to be mounted; And transmitting the broadcast packets, the service configuration information, and the first signaling information.

The service configuration information may include at least one of a service identifier for identifying the broadcast service, genre information indicating a genre of the broadcast service, and information about a provider of the broadcast service.

Generating, for each ensemble, second signaling information which is information necessary to process a broadcast packet to be transmitted through the respective ensemble, wherein the transmitting comprises: ensemble corresponding to the second signaling information The method may further include transmitting through.

The first signaling information may further include an IP address of the second signaling information required to provide the broadcast service.

The first signaling information may include mapping information between the broadcast service and an ensemble to which a broadcast packet providing the broadcast service is transmitted.

The first signaling information may include version information indicating a version of the service configuration information.

The transmitting may include transmitting the service configuration information through an ensemble indicated by the first signaling information, and transmitting the first signaling information through a fast information channel (FIC).

According to another aspect of the present invention, there is provided a method of transmitting broadcast data, the method comprising: acquiring emergency information that is information configured to be preferentially received by an apparatus receiving broadcast data; Generating signaling information including the information necessary for processing broadcast packets for providing a broadcast service and the emergency information; And transmitting the signaling information through a fast information channel (FIC).

The emergency information may include at least one of information indicating a disaster situation, information indicating weather, and information related to decoding of the broadcast packets.

The emergency information may include at least one of type information indicating a type of the emergency information, brief description information about the emergency information, and location information of an ensemble through which detailed description information about the emergency information is transmitted.

According to another aspect of the present invention, there is provided a method of receiving broadcast data, the method comprising: obtaining first signaling information indicating an ensemble in which configuration information of a broadcast service is transmitted; Obtaining the service configuration information based on the first signaling information; And providing the broadcast service on the basis of the service configuration information and the first signaling information, wherein the service configuration information includes a list of broadcast services to be provided using a broadcast packet transmitted through at least one frequency channel. Information about the configuration.

The service configuration information may include at least one of a service identifier for identifying the broadcast service, genre information indicating a genre of the broadcast service, and information about a provider of the broadcast service.

The providing of the broadcast service may include: generating a list of broadcast services provided based on the service configuration information; Controlling the broadcast service list to be displayed; And when one of broadcast services included in the broadcast service list is selected, accessing an ensemble through which a broadcast packet providing the selected broadcast service is transmitted.

The providing of the broadcast service may include obtaining second signaling information including information necessary for processing a broadcast packet for providing the selected broadcast service from the accessed ensemble; And processing the broadcast packet to provide the selected broadcast service using the second signaling information.

The first signaling information may further include an IP address of the second signaling information.

The first signaling information may further include mapping information between the broadcast service and an ensemble through which a broadcast packet for providing the broadcast service is transmitted.

The first signaling information may further include version information indicating a version of the service configuration information.

Receiving the first signaling information may include receiving the first signaling information through a fast information channel (FIC).

According to another aspect of the present invention, in a broadcast data receiving method, high-speed information includes signaling information including emergency information, which is information set to be preferentially received, and information necessary for processing broadcast packets for providing a broadcast service. Receiving over a channel (FIC); And acquiring the emergency information from the signaling information.

The emergency information may include at least one of information indicating a disaster situation, information on weather, and information related to decoding of the broadcast packets.

The emergency information may include at least one of type information indicating a type of the emergency information, brief description information about the emergency information, and location information of an ensemble through which detailed description information about the emergency information is transmitted.

One feature of another embodiment of the present invention is an apparatus for transmitting broadcast data, comprising: a service configuration information generation unit for generating configuration information of a broadcast service to be provided using broadcast packets transmitted through at least one frequency channel ; A signaling information generation unit generating first signaling information which is information indicating an ensemble on which the service configuration information is to be mounted; And a transmitter for transmitting the broadcast packets, the service configuration information, and the first signaling information.

According to another aspect of the present invention, there is provided an apparatus for transmitting broadcast data, the apparatus comprising: an information obtaining unit for obtaining emergency information which is information configured to be preferentially received by an apparatus for receiving broadcast data; An information generator configured to generate signaling information including information necessary for processing broadcast packets for providing a broadcast service and the emergency information; And a transmitter for transmitting the signaling information through a fast information channel (FIC).

According to another aspect of the present invention, there is provided an apparatus for receiving broadcast data, comprising: a signaling information acquisition unit for acquiring first signaling information indicating an ensemble in which configuration information of a broadcast service is transmitted; A service configuration information obtaining unit obtaining the service configuration information based on the first signaling information; And a service provider for providing the broadcast service based on the service configuration information and the first signaling information, wherein the broadcast service is provided by using a broadcast packet transmitted through at least one frequency channel.

According to another aspect of the present invention, a broadcast data receiving apparatus includes a fast information channel including emergency information, information that is configured to be preferentially received, and signaling information including information necessary for processing broadcast packets for providing a broadcast service. Signaling information receiving unit for receiving through the (FIC); And an emergency information acquisition unit for acquiring the emergency information from the signaling information.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

1 is a block diagram of a broadcast data transmission apparatus 100 according to an embodiment of the present invention.

The broadcast data transmission apparatus 100 according to an embodiment of the present invention includes a service configuration information generator 110, a signaling information generator 120, and a transmitter 130.

The service configuration information generator 110 provides configuration information of a broadcast service to be provided using broadcast packets transmitted through one or more frequency channels. The service configuration information includes a type of broadcast service to be provided through one or more frequency channels and a detailed description of the broadcast service. In the present specification, a frequency channel means a channel modulated by a VSB scheme, but a plurality of service configuration information may be transmitted through one frequency channel. Hereinafter, one service configuration is provided through one frequency channel for convenience of description. Assume that only information is conveyed. The service configuration information may include only configuration information of broadcast services to be provided through a frequency channel on which the service configuration information is mounted, but may also include configuration information about broadcast services to be provided through other frequency channels.

The service configuration information may include at least one of a service identifier for identifying each broadcast service, genre information indicating a genre of each broadcast service, and brief description information about each broadcast service. In addition, it may include mapping information between the broadcast service and the IP address of the broadcast packet to provide the broadcast service, or may include mapping information between the broadcast service and second signaling information (to be described later) corresponding to the broadcast service. The above-described information is only one example of information that may be included in the service configuration information, and any information about the broadcast service may be included in the service configuration information.

The signaling information generator 120 generates first signaling information indicating an ensemble to which service configuration information is to be transmitted. In the present specification, an ensemble means a data transmission unit distinguished according to an error coding unit. More than one ensemble is transmitted over the same frequency transmission channel. By displaying the identification number of the ensemble in which the configuration information is transmitted in the first signaling information, the ensemble in which the service configuration information is transmitted may be indicated. In addition, the first signaling information may include version information indicating a version of the configuration information, thereby indicating whether the configuration information is updated.

The first signaling information may include mapping information between the broadcast service and the ensemble. That is, the first signaling information may include information about which ensemble each broadcast service can be provided through.

In addition, the first signaling information may include an IP address of second signaling information (to be described later) corresponding to each broadcast service.

The signaling information generator 120 may further generate second signaling information. The second signaling information is generated for each ensemble as information necessary for processing a broadcast packet to be transmitted through the ensemble. An example of the second signaling information may be IMT or SMT. The second signaling information may include a description of the broadcast service provided through the ensemble and IP addresses of broadcast packets to provide the broadcast service.

When the IP address of the second signaling information is an IP address previously promised by the broadcast data transmitting apparatus 100 and the broadcast data receiving apparatus 200 to be described later, the broadcast data receiving apparatus 200 may be an IP address of the second signaling information. Since the state is already known, the broadcast data transmission apparatus 100 does not separately transmit the IP address of the second signaling information.

However, when the broadcast data receiving apparatus 200 does not know the IP address of the second signaling information, it is preferable that the broadcast data transmitting apparatus 100 transmits the IP address of the second signaling information to the broadcast data receiving apparatus 200. Do. In the latter case, the IP address of the second signaling information may be included in at least one of the service configuration information and the first signaling information. For example, mapping information between the broadcast service identifier and the IP address of the second signaling information corresponding to the broadcast service identifier may be included in at least one of the configuration information and the first signaling information. The second signaling information corresponding to the broadcast service identifier means second signaling information used to process the broadcast service indicated by the identifier, and means second signaling information necessary for processing a broadcast packet providing the corresponding broadcast service. it means.

The transmitter 130 transmits a broadcast packet, configuration information, and first signaling information.

The transmitter 130 may transmit the first signaling information through a fast information channel (FIC). In this specification, a fast information channel means an ensemble that is coded to be robust to error, and is robustly coded to error compared to other ensemble. There is only one or more fast information channels per frequency channel.

The transmitter 130 transmits service configuration information through an ensemble indicated by the first signaling information, and transmits broadcast packets through the remaining ensemble. Only the service configuration information may be transmitted to the ensemble through which the service configuration information is transmitted, but broadcast packets may be transmitted together.

2 is a block diagram of a broadcast data receiving apparatus 200 according to an embodiment of the present invention.

The broadcast data receiving apparatus 200 according to an embodiment of the present invention includes a signaling information obtaining unit 210, a configuration information obtaining unit 220, and a service providing unit 230.

The signaling information acquisition unit 210 obtains first signaling information indicating an ensemble in which configuration information of a broadcast service is transmitted. As described above, the service configuration information includes information on configuration of all broadcast services to be provided using broadcast packets transmitted through at least one frequency channel. The signaling information acquisition unit 210 may acquire first signaling information through a fast information channel.

The configuration information acquisition unit 220 obtains configuration information based on the first signaling information. Since the first signaling information includes information on which ensemble the configuration information is transmitted through, the configuration information acquisition unit 220 may obtain configuration information from the ensemble using the first signaling information.

The service provider 230 provides a broadcast service selected by the user based on the service configuration information and the first signaling information. In order to easily select a desired broadcast service, the service provider 230 may include a list generator 231, a controller 232, an access unit 233, a second signaling information acquirer 234, and a processor 235. ) May be included.

The list generator 231 generates a list of broadcast services provided based on the service configuration information. Assuming that only one configuration information is transmitted through one frequency channel, a list of broadcast services that the broadcast data receiving apparatus 200 can provide is provided by using one or more service configuration information transmitted through each frequency channel. Create

The controller 232 controls the broadcast service list to be output. The controller 232 may control the broadcast service list to be output through an output device such as a display device or a speaker. The user may select one of the broadcast services included in the output service list.

The access unit 233 accesses an ensemble in which a broadcast packet providing a broadcast service selected by a user is transmitted. The service configuration information includes an identifier for the selected service, and since the first signaling information includes mapping information between the service identifier and the ensemble, the access unit 233 broadcasts a user selected using the service configuration information and the first signaling information. The ensemble that provides the service can be selectively accessed.

The second signaling information obtaining unit 234 obtains second signaling information from the accessed ensemble. The second signaling information is information necessary for processing broadcast packets transmitted through the ensemble, and may include information about what broadcast service is to be provided through the ensemble and information about IP addresses of broadcast packets to provide the broadcast service. .

When the broadcast data transmitting apparatus 100 and the broadcast data receiving apparatus 200 have previously promised the IP address of the second signaling information, the second signaling information obtaining unit 234 promises in advance in the accessed ensemble without additional information. The second signaling information may be obtained by acquiring a broadcast packet having a received IP address.

However, when the broadcast data transmitting apparatus 100 and the broadcast data receiving apparatus 200 do not promise the IP address of the second signaling information in advance, the IP address of the second signaling information is at least one of the service configuration information and the first signaling information. It can be included in one. In this case, the second signaling information acquisition unit 234 should obtain the IP address of the second signaling information from at least one of the first signaling information and the service configuration information.

The processor 235 processes the broadcast packet to provide the selected broadcast service using the second signaling information.

According to an embodiment, the list generator 231 and the controller 232 are not included in the broadcast data receiving apparatus 200 or included in the broadcast data receiving apparatus 200, but the broadcast data receiving apparatus 200 operates for the first time. In this case, the reception region may be changed, a user request may be requested, a version of the service configuration information may be changed, or the broadcast data receiving apparatus 200 may be initialized. In another embodiment, when the broadcast data receiving apparatus 200 operates, the list generator 231 and the controller 232 provide a service list using a service configuration information or first signaling information previously received, and the user provides a service. Can be selected.

3 illustrates a syntax regarding an example of service configuration information according to an embodiment of the present invention. The CDT (Channel Description Table) shown in FIG. 3 is an example of service configuration information. In addition, "channel" in FIG. 3 is a concept that is different from the "frequency channel" in this specification and corresponds to a broadcast service.

The 'M1_info_type' field 310 indicates the type of data. In FIG. 3, the 'M1_info_type' field 310 has a value of '0x00', and the fields present after the 'M1_info_type' field 310 indicate service configuration information.

The 'channel_identifier' field 320 is used to identify a broadcast service.

The 'channel_type' field 330 indicates the type of broadcast service, that is, the genre of the broadcast service. The genre of a broadcast service may be classified in various ways. For example, the genre of the broadcast service may be classified into a film, sports, drama, news, animation, women / culture, infants / children, documentaries, education, and entertainment.

According to an exemplary embodiment, genre information may be simply expressed as audio, A / V service, data service, or the like.

A 'virtual_channel_status' field 340 indicates a current state of a broadcast service. The 'virtual_channel_status' field 340 may indicate whether a broadcast service is in an 'active' state or an 'inactive' state. The 'active' state may mean that the current broadcast service can be provided, and the 'inactive' state may mean that the current broadcast service cannot be provided. The 'inactive' state may include a state in which all broadcast packets required to provide a broadcast service are not transmitted.

In addition, the 'virtual_channel_status' field 340 may indicate whether a broadcast service is in a 'hidden' state. When the broadcast service is in a 'hidden' state, this may mean that a broadcast packet providing a broadcast service is transmitted but is not shown to a user for a predetermined reason.

The 'base_channel_indicator' field 342 indicates whether the corresponding broadcast service is connected to another broadcast service. For example, suppose that the broadcast data transmitting apparatus 100 provides both a high quality broadcast service and a high quality broadcast service having the same contents. The 'base_channel_indicator' field 342 may indicate that the broadcast service is a low quality broadcast service (or a high quality broadcast service). In addition, the 'base_channel_indicator' field 342 may include description information about another related broadcast service. In this case, the 'base_channel_indicator' field 342 may include an identifier of a high quality (or low quality) broadcast service and an identifier of an ensemble for providing a high quality broadcast service.

The 'short_channel_description' field 350 includes a brief description of the broadcast service. The 'short_channel_description' field 350 may include any information as long as it is a description of the broadcast service. For example, the 'short_channel_description' field 350 may include information about a broadcast service provider providing a corresponding broadcast service.

The 'channel_descriptor_loop' field 360 shows a detailed description of the broadcast service. For example, detailed genre information of a broadcast service may be included in the 'channel_descriptor_loop' field 360.

The syntax shown in FIG. 3 is merely an example of service configuration information, and is an IP address of a broadcast packet to provide a broadcast service or an IP address of a second signaling information required to process these broadcast packets or an identifier of an ensemble in which a service exists. May be further included in the service configuration information.

4 illustrates a syntax regarding an example of first signaling information according to an embodiment of the present invention.

4A illustrates a header 401 of first signaling information according to an embodiment of the present invention.

A 'transport_stream_id' field 412 indicates an identifier of a stream transmitted on a frequency channel.

'ESG_version' 414 indicates a version of the ESG data. ESG data is meta data about a broadcast service.

'IMT_version' field 416 indicates a version of IMT data. The IMT may include mapping information between IP addresses of broadcast packets and location information in the ensemble. That is, the IMT indicates where broadcast packets are transmitted in the ensemble.

The 'CDT_version' field 418 indicates version information of the CDT.

4B illustrates a payload 402 of first signaling information according to an embodiment of the present invention.

The 'ensemble_id' field 422 is a field for identifying an ensemble.

A 'primary_ensemble_indicator' field 424 indicates whether the ensemble corresponds to a primary ensemble. The primary ensemble means an ensemble set to approach first compared to other ensemble. Accordingly, the ensemble in which the CDT is transmitted may be indicated using the 'primary_ensemble_indicator' field 424.

The 'SG_entry_point_indicator' field 426 indicates whether a service guide is included in the ensemble.

The 'number_channel' field 428 represents the number of broadcast services provided through the ensemble.

A 'channel_type' field 432 indicates a data type of a broadcast service. The 'channel_type' field 432 may indicate that the broadcast service transmits one of an audio signal, a video signal, and a data signal.

A 'virtual_channel_status' field 434 indicates a state of a broadcast service. As described above, the 'virtual_channel_status' field 434 may indicate whether the broadcast service is in an 'active' state or an 'inactive' state, or may be in a 'hidden' state.

A 'primary_channel_indicator' field 436 indicates a primary broadcast service. The 'primary_channel_indicator' field 436 may indicate a broadcast service to be provided first in the ensemble, and may indicate, for example, second signaling information.

The 'SP_indicator' field 438 indicates whether protection such as encryption or scrambling has been performed on at least one of the components necessary to provide a corresponding broadcast service.

The 'major_channel_num' field 442 and the 'minor_channel_num' field 444 are information for identifying a broadcast service and classify the broadcast service according to a predetermined criterion. For example, the 'major_channel_num' field 442 may be classified according to a service provider. In the case of a broadcast service provided by the same service provider, the field values of the 'major_channel_num' field 442 may be the same. In addition, the 'minor_channel_num' field 444 may be divided according to broadcast services provided by the same broadcast service provider.

Information about which broadcast service can be provided through each ensemble can be obtained through two 'for' statements included in the first signaling information according to an embodiment of the present invention.

5 is information obtained through service configuration information 300 and first signaling information 401 and 402 according to an embodiment of the present invention.

Referring to FIG. 5, service # 1 is provided through ensemble # 1 and # 3 and corresponds to second signaling information having IP addresses 222.0.0.1 and 222.0.0.2. That is, broadcast packets to provide service # 1 are transmitted through ensembles # 1 and ensembles # 3 and processed using second signaling information having IP addresses 222.0.0.1 and 222.0.0.2.

Suppose a user requested service # 1. The broadcast data receiving apparatus first accesses ensemble # 1 to obtain a broadcast packet having an IP address of '222.0.0.1', and accesses to ensemble # 3 to obtain a broadcast packet having an IP address of '222.0.0.2'. At this time, the obtained broadcast packets as the second signaling information, the broadcast data receiving apparatus may process the second signaling information to obtain IP addresses of the broadcast packets to provide the service # 1. Thereafter, the broadcast data receiving apparatus may provide the service # 1 by selectively processing only the broadcast packet providing the service # 1.

6 illustrates an example of a service list generated by using service configuration information according to an embodiment of the present invention.

The service list 600 includes a broadcast channel number 610, broadcast channel information 620, an upper genre 630, and a lower genre 640.

In this specification, the broadcast channel number 610 is a number that is different from a physical frequency channel as a broadcast service number is indicated by a number for easy identification by a user. The broadcast channel number 610 may take the form of 'major broadcast channel number'-'minor broadcast channel number'. In this case, the 'major broadcast channel number' may be used to identify a broadcasting station (ie, a service provider) that provides a broadcast service, and the 'minor broadcast channel number' may be used to identify each broadcast service provided by the same service provider. In FIG. 6, 'major broadcast channel number' of a broadcast service provided by 'broadcaster A' is '10', and 'major broadcast channel number' of a broadcast service provided by 'broadcaster D' is used as '12'.

According to an embodiment, one broadcast channel number may be configured and transmitted.

The broadcast channel information 620 is a description of the corresponding broadcast channel. The broadcast channel information 620 may include any information about the broadcast channel. For example, the broadcast channel information 620 may include simple information about a provider of a broadcast service provided in a broadcast channel or a genre of a broadcast service provided in a broadcast channel.

 The higher genre information 630 indicates a higher genre of a currently provided broadcast service. The method of classifying the upper genres varies depending on the embodiment. For example, higher genres of broadcast services may be classified into dramas, movies, sports, news, and metadata.

The lower genre information 640 indicates a detailed genre of a broadcast service. The lower genre information 640 may indicate more accurately what the broadcast service is about. Accordingly, the upper genre information 630 may indicate a large category to which the genre of the broadcast service belongs, and the lower genre information 640 may indicate a small category to which the genre of the broadcast service belongs.

Channel Type refers to the type of service provided. For example, the channel type may indicate whether the service is an audio service, an A / V service, a data service, or an emergency information service.

7 illustrates an example of a method of providing a broadcast service in the broadcast data receiving apparatus 200 according to an embodiment of the present invention.

When the user first drives or initializes the broadcast data receiving apparatus 200, broadcast channel scanning is started. The broadcast data receiving apparatus 200 may present a list of broadcast channels that a user can watch through broadcast channel scanning.

Broadcast channel scanning can be performed through the following two methods.

First, channel scanning may be performed using service configuration information.

The broadcast data receiving apparatus 200 obtains first signaling information through the FIC. The first signaling information 710 includes information necessary for processing broadcast packets transmitted through the ensemble.

Referring to FIG. 7, the first signaling information may include a service identifier, IP information, version information, genre information, and an ensemble identifier.

The IP information indicates an IP address of the second signaling information required for providing a broadcast service corresponding to the service identifier.

The version information indicates the version of the second signaling information.

The genre information indicates the genre of the broadcast service corresponding to the service identifier.

The ensemble identifier indicates an ensemble in which a broadcast service corresponding to the service identifier is provided.

Although not shown in FIG. 7, the first signaling information includes information indicating an ensemble in which service configuration information is transmitted. In addition, the IP address and genre information of the second signaling information may be included only in the service configuration information and may not be included in the first signaling information.

Next, the broadcast data receiving apparatus 200 accesses the ensemble through which the service configuration information is transmitted, based on the first signaling information, and obtains the service configuration information from the accessed ensemble.

The broadcast data receiving apparatus 200 obtains all service configuration information by repeating the above process for all frequency channels.

Thereafter, the broadcast data receiving apparatus 200 processes the service configuration information to generate a broadcast channel list and present it to the user.

Second, channel scanning can be performed without using service configuration information.

The broadcast data receiving apparatus 200 receives the first signaling information 710 through the FIC. The first signaling information 710 includes the IP address of the second signaling information.

The broadcast data receiving apparatus 200 obtains second signaling information from each ensemble by using an IP address of the second signaling information. The second signaling information includes not only information necessary for processing the broadcast packet transmitted through the corresponding ensemble, but also information on the broadcast service to be provided through the corresponding ensemble.

The broadcast data receiving apparatus 200 processes the second signaling information, generates a list of broadcast channels, and presents the list to the user.

In the latter case, the broadcast data receiving apparatus 200 takes a lot of time in that each ensemble needs to be accessed to acquire second signaling information. However, in the former case, since the broadcast data receiving apparatus 200 may perform channel scanning by accessing one ensemble and obtaining only service configuration information, the broadcast data receiving apparatus 200 may shorten the time required for channel scanning.

When the channel scanning is completed through the above process, the channel scanning is performed again only in exceptional cases, such as when the service configuration information is updated, when the user requests it, or when the broadcast data receiving apparatus 200 is initialized. May present a list of broadcast services already acquired to the user.

When the broadcast service list is presented, the user selects one of the broadcast services included in the broadcast service list. If there is no user selection, a broadcast service corresponding to the most recently selected broadcast channel may be selected, or a broadcast service corresponding to a broadcast channel set as a default may be selected.

When the user selects a broadcast service, the broadcast data receiving apparatus 200 accesses an ensemble for providing the selected broadcast service using the first signaling information. As described above, the first signaling information includes information on which ensemble each broadcast service is transmitted through.

The broadcast data receiving apparatus 200 obtains second signaling information from an accessed ensemble. The second signaling information may or may not have an IP address previously promised with the broadcast data transmission apparatus 100. When the second signaling information has an IP address previously promised with the broadcast data transmitting apparatus 100, the broadcast data receiving apparatus 200 obtains a broadcast packet having an IP address promised from the accessed ensemble. When the second signaling information does not have a previously promised IP address, the IP packet of the second signaling information is checked based on the service configuration information 721 or the first signaling information, and a broadcast packet having the confirmed IP address is received. Acquire.

When the second signaling information is obtained, the broadcast data receiving apparatus 200 obtains IP addresses of broadcast packets for providing a broadcast service selected by a user from the second signaling information. As described above, the second signaling information includes IP addresses of broadcast packets that provide respective broadcast services.

Finally, the broadcast data receiving apparatus 200 provides a broadcast service selected by a user by obtaining and processing broadcast packets from an accessed ensemble.

In FIG. 7, it is assumed that a user selects broadcast service # 1 indicated by service identifier # 1.

Referring to the first signaling information 710, it can be seen that broadcast packets providing the service identifier # 1 are transmitted through the ensemble identifier # 1. Accordingly, the broadcast data receiving apparatus obtains second signaling information by approaching ensemble # 1 730-1. The IP addresses of the broadcast packets providing the broadcast service # 1 are checked from the obtained second signaling information, and the broadcast packets are obtained using the confirmed IP address.

Next, the broadcast data receiving apparatus 200 provides the broadcast service # 1 by processing the obtained IP packets.

8 illustrates another example of a method of providing a broadcast service in a broadcast data receiving apparatus according to an embodiment of the present invention.

8 illustrates a case where broadcast packets providing one broadcast service are transmitted through two or more ensemble.

In FIG. 8, it is assumed that the user selects the broadcast service # 1 indicated by the service identifier # 1.

Referring to the first signaling information 810, it can be seen that broadcast packets providing the broadcast service # 1 are transmitted through the ensemble # 1 and the ensemble # 2.

According to an embodiment, the broadcast service # 1 may be provided only by processing both the broadcast packet transmitted through the ensemble # 1 and the broadcast packet transmitted through the ensemble # 2, and only the broadcast packets transmitted through the ensemble # 1 may be processed. Accordingly, the broadcast service # 1 can be implemented to provide high quality broadcast service # 1 by providing broadcast service # 1 of low quality and processing all broadcast packets transmitted through the ensemble # 2.

The broadcast data receiving apparatus 200 obtains the second signaling information 831-1 from the ensemble # 1 830-1, and obtains the second signaling information 832-1 from the ensemble # 2 830-2. By checking the IP address of the broadcast packets to be obtained.

Thereafter, the broadcast data receiving apparatus 200 obtains broadcast packets related to the broadcast service # 1 using the checked IP address, processes them, and provides the broadcast service # 1.

9 shows an example of a method of providing a broadcast service in a broadcast data receiving apparatus according to another embodiment of the present invention. 9 illustrates a case where a naked IP service is provided.

In FIG. 9, it is assumed that a user selects naked IP service # 1.

In the present specification, the naked IP service refers to a service provided by processing IP packets using signaling information in a format different from that of a general broadcast service. By using Naked IP service, more various services can be provided.

Referring to the first signaling information 910, it can be seen that IP packets providing naked IP service # 1 are provided through an ensemble #N 930 -N. In order to process IP packets providing a naked IP service, third signaling information different from the second signaling information is required. Accordingly, at least one of the first signaling information 910 and the service configuration information 921 should include naked IP service information including a flag indicating that the naked IP service and an IP address of the third signaling information.

In FIG. 9, an IMT is illustrated as an example of third signaling information. The IMT is information indicating the positions of IP packets transmitted through the ensemble and includes mapping information between IP addresses of the IP packets and positions in the ensemble.

The broadcast data receiving apparatus accesses the ensemble #N and acquires an IMT 931 -N. Thereafter, the broadcast data receiving apparatus may provide naked IP service # 1 by obtaining desired IP packets based on the IMT 931 -N.

10 is a block diagram of a broadcast data transmission apparatus 1000 according to another embodiment of the present invention.

The broadcast data transmission apparatus 1000 according to another embodiment of the present invention includes an information acquisition unit 1010, an information generation unit 1020, and a transmission unit 1030.

The information obtaining unit 1010 obtains emergency information which is information set to be preferentially received by an apparatus for receiving broadcast data. Emergency information may be variously set according to an embodiment. For example, emergency information may include not only information that must be transmitted first, such as information related to decoding broadcast packets that provide a broadcast service, but also information that is set to be transmitted first, such as disaster information or weather information.

The emergency information may include at least one of type information indicating the type of emergency information, brief description information about the emergency information, and location information of the ensemble through which detailed description information about the emergency information is transmitted.

The type information is information indicating the type of data transmitted through the emergency information. For example, the type information may indicate which of the disaster information, the DRM information, and the weather information is transmitted as emergency information.

Type information may be represented using the 'channel_type' field 432 of FIG. 4B. In this case, information about an ensemble in which emergency information is transmitted can be quickly signaled without additional 'description'.

The brief descriptive information about the emergency information may include text information to be presented to the user. The user may request specific information after viewing the brief description of the emergency information. However, if the detailed information about the emergency information is transmitted through the FIC, the bandwidth of the FIC may not be sufficient. Therefore, the detailed information about the emergency information is transmitted through the ensemble, and the signaling information includes an ensemble in which detailed information about the emergency information is transmitted. You can include a location. If the user requests detailed information about the emergency information, the broadcast data receiving apparatus 1100, which will be described later, will access an ensemble through which detailed information about the emergency information is transmitted using location information of the ensemble.

As the location information of the ensemble, an ensemble identifier for identifying the ensemble may be used.

The information generator 1020 generates signaling information including information necessary for processing broadcast packets for providing a broadcast service and emergency information.

The transmitter 1030 transmits signaling information through the FIC.

11 is a block diagram of a broadcast data receiving apparatus 1100 according to another embodiment of the present invention.

The broadcast data receiving apparatus 1100 according to another embodiment of the present invention includes an information obtaining unit 1110 and a processing unit 1120.

The information obtaining unit 1110 obtains signaling information through the FIC. The signaling information includes information necessary for processing broadcast packets for providing a broadcast service and emergency information which is information set to be preferentially received by the broadcast data receiving apparatus 1100.

The presence or absence of emergency information may be informed through the 'channel type' field 432 of the first signaling information.

The emergency information may include information set to be preferentially received by the broadcast data receiving apparatus 1100 or information related to decoding of broadcast packets, such as information indicating a disaster situation and information indicating weather.

The emergency information may include at least one of type information indicating the type of emergency information, brief description information about the emergency information, and location information of the ensemble through which the detailed description information about the emergency information is transmitted.

The processor 1120 processes the signaling information to obtain emergency information. The processed emergency information is used to process a broadcast packet or output to a user depending on the type. The processor 1120 may further include an output unit (not shown). When the emergency information is information to be output to the user, the output unit (not shown) outputs the emergency information.

When the emergency information is received, the processor 1120 may stop a service currently being provided and output the emergency information first.

The processor 1120 may include a storage unit (not shown), an output unit (not shown), and a controller (not shown).

When the emergency information is received, the controller stops the provision of the currently provided service and controls the storage unit (not shown) to store processing information about the service.

Next, an output unit (not shown) outputs emergency information.

If the situation corresponding to the emergency information ends or the termination request is received from the user, the controller (not shown) controls the output unit (not shown) so that the stopped service is provided again.

12 shows an example of a body of first signaling information according to an embodiment of the present invention.

In FIG. 12, the 'number_of_descriptor' field 1210 indicates the number of emergency information to be transmitted through the first signaling information.

The 'tag' field 1220 indicates the type of emergency information. The definition according to the 'tag' field value is shown in Table 1 below.

TABLE 1

0x01 Disaster information 0x02 CAS / DRM Decryption Information 0xxx reserved

Referring to Table 1 above, if the value of the 'tag' field 1220 is '0x01', the 'FICdescriptor ()' field 1230 indicates disaster information. In addition, when the value of the 'tag' field 1220 is '0x02', the 'FICdescriptor ()' field 1230 indicates CAS / DRM decoding information.

13 is an example of a 'FICdescriptor ()' field when a 'tag' field value is '0x01' according to an embodiment of the present invention.

The 'accident_main_type' 1310 field is information indicating the type of disaster information.

The 'accident_sub_type' field 1320 is additional information indicating the type of disaster information price. For example, the 'accident_main_type' 1310 field may indicate a major category to which disaster information belongs, and the 'accident_main_type' field 1320 may indicate a sub-category to which the disaster information belongs. As an example when the 'accident_main_type' field 1310 is a 'natural disaster', the 'accident_sub_type' field 1320 may represent one of 'flood', 'wildfire' and 'earthquake'.

The 'ensemble_id' field 1330 is information indicating a location of an ensemble for transmitting detailed disaster information. That is, information on which ensemble detailed disaster information is transmitted is indicated through an ensemble identifier.

The 'accident_description' field 1340 contains a brief description of the disaster information.

14 is an example of a 'FICdescriptor ()' field when a 'tag' field value is '0x02' according to an embodiment of the present invention.

The 'segmentation_number' field 1410 indicates how many segments the data is divided when the data is divided.

The 'last_segment_number' field 1420 indicates the number of the last segment when data is divided.

The 'key_stream_main_type' field 1430 is identification information of a data stream for transmitting an encryption key.

The 'key_stream_sub_type' field 1440 is additional identification information of the data stream that transmits the encryption key.

The 'ensemble_id' field 1450 is indication information indicating an ensemble for transmitting detailed information related to decryption of data. That is, the ensemble identifier indicates which ensemble detailed information related to decryption is transmitted through.

The 'key_stream_length' field 1460 is length information of a stream for transmitting an encryption key.

The 'key_stream' field 1470 is information related to an encryption key.

The 'additional_key_stream_descriptor' field 1480 is additional information related to an encryption key.

15 shows an example of a configuration of a signaling information channel and an ensemble according to an embodiment of the present invention.

The FIC 1510 includes first signaling information including a first signaling information header and a first signaling information body. The first signaling information includes emergency information which is information that the broadcast data receiving apparatus is configured to receive preferentially or information necessary for processing broadcast packets for providing a broadcast service.

In FIG. 15, when the first signaling information carries disaster information, a detailed description of the disaster information is transmitted through an ensemble having '0x02' as an identifier.

Ensemble # 1 1520 includes service configuration information. Ensemble # 1 1520 including service configuration information is indicated by the first signaling information.

In FIG. 15, broadcast channel information corresponds to service configuration information. The broadcast channel information includes a broadcast channel number 1521, a broadcast channel name 1522, a broadcast channel state 1523, and a broadcast channel type 1524.

Ensemble #N 1530 transmits a broadcast service corresponding to broadcast channel 20-1.

16 shows an example of a configuration of a signaling information channel and an ensemble according to another embodiment of the present invention.

FIG. 16 illustrates a case in which the first signaling information carries decryption information. A detailed description of the decryption information is transmitted through an ensemble having '0x03' as an identifier, and an ensemble including a data stream to which encryption is applied is '0x03,0x04'. , 0x05, 0x06 '.

17 is a flowchart illustrating a broadcast data transmission method according to an embodiment of the present invention.

In operation S1710, configuration information of a broadcast service to be provided is generated using broadcast packets transmitted through at least one frequency channel.

In operation S1720, first signaling information indicating an ensemble on which the service configuration information is to be mounted is generated.

In operation S1730, broadcast packets, configuration information, and first signaling information are transmitted.

18 is a flowchart illustrating a broadcast data receiving method according to an embodiment of the present invention.

In operation S1810, first signaling information indicating an ensemble in which configuration information of a broadcast service is transmitted is obtained. The service configuration information is information about a configuration of a service provided by using a broadcast packet transmitted through at least one frequency channel.

In operation S1820, service configuration information is obtained based on the first signaling information.

In operation S1830, a broadcast service is provided based on the service configuration information and the first signaling information.

19 is a flowchart illustrating a broadcast data transmission method according to another embodiment of the present invention.

In operation S1910, the device receiving the broadcast data acquires emergency information, which is information set to be preferentially received. The emergency information may include at least one of information representing a disaster situation, weather information, and information related to decoding of broadcast packets. In this case, the emergency information may include at least one of type information indicating the type of emergency information, brief description information about the emergency information, and location information of the ensemble through which detailed description information about the emergency information is transmitted.

In operation S1920, signaling information including the emergency information and information necessary for processing broadcast packets for providing a broadcast service are generated.

In operation S1930, the signaling information is transmitted through a fast information channel (FIC).

20 is a flowchart illustrating a broadcast data receiving method according to another embodiment of the present invention.

In operation s2010, the first terminal receives the emergency information, which is information set to be received first, and signaling information including information necessary for processing broadcast packets for providing a broadcast service through a fast information channel (FIC).

In step S2020, emergency information is obtained from the signaling information.

Meanwhile, the above-described embodiments of the present invention can be written as a program that can be executed in a computer, and can be implemented in a general-purpose digital computer that operates the program using a computer-readable recording medium.

The computer-readable recording medium may be a magnetic storage medium (for example, a ROM, a floppy disk, a hard disk, etc.), an optical reading medium (for example, a CD-ROM, a DVD, etc.) and a carrier wave (for example, the Internet). Storage medium).

So far I looked at the preferred embodiments with respect to the present invention. Those skilled in the art will appreciate that the present invention can be implemented in a modified form without departing from the essential features of the present invention. Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

1 is a block diagram of a broadcast data transmission apparatus 100 according to an embodiment of the present invention.

2 is a block diagram of a broadcast data receiving apparatus 200 according to an embodiment of the present invention.

3 is an example of a syntax of service configuration information according to an embodiment of the present invention.

4A illustrates a header 401 of first signaling information according to an embodiment of the present invention.

4B illustrates a payload 402 of first signaling information according to an embodiment of the present invention.

5 is information obtained through service configuration information 300 and first signaling information 401 and 402 according to an embodiment of the present invention.

6 illustrates an example of a service list generated by using service configuration information according to an embodiment of the present invention.

7 illustrates an example of a method of providing a broadcast service in the broadcast data receiving apparatus 200 according to an embodiment of the present invention.

8 illustrates another example of a method of providing a broadcast service in a broadcast data receiving apparatus according to an embodiment of the present invention.

9 shows another example of a method for providing a broadcast service in a broadcast data receiving apparatus according to an embodiment of the present invention.

10 is a block diagram of a broadcast data transmission apparatus 1000 according to another embodiment of the present invention.

11 is a block diagram of a broadcast data receiving apparatus 1100 according to another embodiment of the present invention.

12 shows an example of a body of first signaling information according to an embodiment of the present invention.

13 is an example of a 'FICdescriptor ()' field when a 'tag' field value is '0x01' according to an embodiment of the present invention.

14 is an example of a 'FICdescriptor ()' field when a 'tag' field value is '0x02' according to an embodiment of the present invention.

15 shows an example of a configuration of a signaling information channel and an ensemble according to an embodiment of the present invention.

16 shows an example of a configuration of a signaling information channel and an ensemble according to another embodiment of the present invention.

17 is a flowchart illustrating a broadcast data transmission method according to an embodiment of the present invention.

18 is a flowchart illustrating a broadcast data receiving method according to an embodiment of the present invention.

19 is a flowchart illustrating a broadcast data transmission method according to another embodiment of the present invention.

20 is a flowchart illustrating a broadcast data receiving method according to another embodiment of the present invention.

Claims (30)

In the method for transmitting broadcast data, Generating configuration information of a broadcast service to be provided using broadcast packets transmitted through at least one frequency channel; Generating first signaling information indicating an ensemble in which the service configuration information is to be mounted; And Transmitting the broadcast packets, the service configuration information, and the first signaling information. The method of claim 1, wherein the service configuration information, And at least one of a service identifier for identifying the broadcast service, genre information indicating a genre of the broadcast service, and information about a provider of the broadcast service. The method of claim 1, Generating, for each ensemble, second signaling information which is information necessary for processing a broadcast packet to be transmitted through each ensemble; The transmitting may further include transmitting the second signaling information through a corresponding ensemble. The method of claim 3, wherein the first signaling information, And an IP address of second signaling information required to provide the broadcast service. The method of claim 1, wherein the first signaling information, And mapping information between the broadcast service and an ensemble to which a broadcast packet providing the broadcast service is transmitted. The method of claim 1, wherein the first signaling information, Broadcast data transmission method comprising version information indicating a version of the service configuration information. The method of claim 1, wherein the transmitting step, Transmitting the service configuration information through an ensemble indicated by the first signaling information, and transmitting the first signaling information through a fast information channel (FIC). In the method for transmitting broadcast data, Acquiring emergency information which is information set to be preferentially received by a device receiving broadcast data; Generating signaling information including the information necessary for processing broadcast packets for providing a broadcast service and the emergency information; And And transmitting the signaling information through a fast information channel (FIC). The method of claim 8, wherein the emergency information, And at least one of information indicating a disaster situation, information indicating a weather condition, and information related to decoding the broadcast packets. The method of claim 8, wherein the emergency information, And at least one of type information indicating the type of the emergency information, brief description information about the emergency information, and position information of an ensemble through which detailed description information about the emergency information is transmitted. In the method for receiving broadcast data, Acquiring first signaling information indicating an ensemble in which configuration information of a broadcast service is transmitted; Obtaining the service configuration information based on the first signaling information; And Providing the broadcast service based on the service configuration information and the first signaling information, The service configuration information is information on a configuration of broadcast services to be provided using broadcast packets transmitted through at least one frequency channel. The method of claim 11, wherein the service configuration information, And at least one of a service identifier for identifying the broadcast service, genre information indicating the genre of the broadcast service, and information about a provider of the broadcast service. The method of claim 11, wherein providing the broadcast service comprises: Generating a list of broadcast services provided based on the service configuration information; Controlling the broadcast service list to be displayed; And And if one of the broadcast services included in the broadcast service list is selected, accessing an ensemble through which a broadcast packet providing the selected broadcast service is transmitted. The method of claim 13, wherein providing the broadcast service comprises: Obtaining second signaling information including information necessary for processing a broadcast packet for providing the selected broadcast service from the accessed ensemble; And And processing a broadcast packet to provide the selected broadcast service by using the second signaling information. The method of claim 14, wherein the first signaling information, Broadcast data reception method comprising the IP address of the second signaling information. The method of claim 11, Storing at least one of the service configuration information and the first signaling information; And And generating a list of broadcast services provided based on at least one of the stored service configuration information and the first signaling information. The method of claim 11, wherein the first signaling information, And mapping information between the broadcast service and an ensemble through which a broadcast packet for providing the broadcast service is transmitted. The method of claim 11, wherein the first signaling information, Broadcast data receiving method further comprises version information indicating the version of the service configuration information. The method of claim 11, wherein the receiving of the first signaling information comprises: Receiving the first signaling information through a fast information channel (FIC). In the broadcast data receiving method, Receiving signaling information including emergency information, which is information set to be preferentially received, and signaling information including information necessary for processing broadcast packets for providing a broadcast service through a fast information channel (FIC); And And acquiring the emergency information from the signaling information. The method of claim 20, wherein the emergency information, And at least one of information representing a disaster situation, information on weather, and information related to decoding of the broadcast packets. The method of claim 20, wherein the emergency information, And at least one of type information indicating the type of the emergency information, brief description information about the emergency information, and location information of an ensemble through which detailed description information about the emergency information is transmitted. The method of claim 22, wherein the location information of the ensemble, Broadcast data reception method, characterized in that transmitted through the 'channel_type' field in the first signaling information. The method of claim 20, And outputting the received emergency information first and foremost. The method of claim 24, wherein the outputting step, Stopping the provision of a service currently being provided and storing processing information on the service; Outputting the emergency information; And And when the situation corresponding to the emergency information ends or when a termination request is received from the outside, providing the stopped service by using the stored processing information. In the apparatus for transmitting broadcast data, A service configuration information generator for generating configuration information of a broadcast service to be provided using broadcast packets transmitted through at least one frequency channel; A signaling information generation unit configured to receive first signaling information indicating an ensemble on which the service configuration information is to be mounted; And And a transmitter for transmitting the broadcast packets, the service configuration information, and the first signaling information. In the apparatus for transmitting broadcast data, An information acquiring unit for acquiring emergency information which is information configured to preferentially receive by a device receiving broadcast data; An information generator configured to generate signaling information including information necessary for processing broadcast packets for providing a broadcast service and the emergency information; And And a transmitter for transmitting the signaling information through a fast information channel (FIC). In the apparatus for receiving broadcast data, A signaling information obtaining unit obtaining first signaling information indicating an ensemble in which configuration information of a broadcast service is transmitted; A service configuration information obtaining unit obtaining the service configuration information based on the first signaling information; And A service provider which provides the broadcast service based on the service configuration information and the first signaling information; And the broadcast service is provided by using a broadcast packet transmitted through at least one frequency channel. In the broadcast data receiving apparatus, A signaling information receiver configured to receive signaling information including emergency information, information configured to be preferentially received, and signaling information including information necessary for processing broadcast packets for providing a broadcast service through a fast information channel (FIC); And And an emergency information acquisition unit for acquiring the emergency information from the signaling information. A computer-readable recording medium having recorded thereon a program for executing the method of any one of claims 1 to 24.

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