JP2002141877A - Digital broadcast transmitting / receiving system and digital broadcast receiving device - Google Patents

Abstract

(57) [Summary] [Problem] A plurality of related services are grouped by a bouquet, and the relation is simply identified. SOLUTION: In ARIB STD-B10, a BAT (Bouquet Associat
ion Table) is specified. In addition, a service list descriptor, a bouquet name descriptor, and the like are defined as descriptors describing information related to the bouquet. Further, a bouquet type descriptor is added. The bouquet type descriptor describes, for example, the adjacent substitution relationship, affiliated station relationship, connection transmission relationship, same broadcaster relationship, same service area relationship, simulcast relationship, and the like, and specifies the bouquet type.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an MPEG-2 system.
The present invention relates to a digital broadcast transmitting / receiving system in which a transport stream specified in ems is applied as a broadcast signal, and a digital broadcast receiving device that receives the broadcast signal.

[0002]

[Prior Art] "Program Arrangement Information Standard ARIB STD-B10 1.3 Version for Digital Broadcasting" proposed by the Association of Radio Industries and Businesses (ARIB) (published in June 2000)
Hereinafter, it is simply referred to as ARIB STD-B10. In), the structure of program arrangement information and the operation of identifiers in digital broadcasting are as follows.
He proposes a concept called a bouquet. This bouquet is
This is a concept indicating a set of a plurality of services (programs) and transport streams, and the set may be formed across network boundaries.

Conventional CS digital broadcasting, 2000
In BS digital broadcasting scheduled to start in the month, the concept of a bouquet of grouping a plurality of services is not required at present and has not been applied in operation. The reason is that the service area is all over Japan, so-called PSI / SI (Program Specific Information / Serv
ice Information The auxiliary information for selecting a program or acquiring program information) is sufficiently transmitted. Also, in the "Guidelines on how to use program arrangement information" attached to ARIB STD-B10, "bouquet operators" are described, but in BS digital broadcasting, services are grouped from the viewpoint of "operators". Therefore, BIT (Bouquet Information Table) is applied.

On the other hand, terrestrial digital audio broadcasting (ISDB-Tn: Intergrated Servic
(es Digital Broadcasting-Terrestorial narrow), the service area is divided into fixed areas instead of all over Japan, the transmission rate is several hundred kbps, which is very small compared to satellite broadcasting, and the amount of PSI / SI information is sufficient. There are situations where you cannot send. In such a situation, it is necessary to organically associate services (programs) and transport streams and to effectively utilize them when selecting programs and when acquiring program information.

[0005]

[Problems to be solved by the invention] By the way, ARIB STD-B
10 defines a BAT (Bouquet Association Table) as a table that defines information about a bouquet. In ARIB STD-B10, as a descriptor that describes information related to bouquets, or as a descriptor used for BAT, a service list descriptor, a staff descriptor, a bouquet name descriptor, a country reception availability descriptor, Link descriptor, C
A identification descriptor is defined.

[0006] However, it is difficult to simply identify a set of a plurality of services (programs) and transport streams using only these tables and descriptors, and it is difficult to effectively use these sets. Was.

[0007] The present invention has been made in view of such circumstances, and when providing a set of a plurality of services (programs), transport streams, and / or networks related in some relation, the relation is determined. It is an object of the present invention to provide a digital broadcast transmitting / receiving system that can be simply identified and used effectively, and a digital broadcast receiving device that receives a broadcast signal broadcast by the digital broadcast system.

[0008]

A digital broadcast transmission / reception system according to the present invention is a digital broadcast transmission / reception system in which a transport stream specified by MPEG-2 Systems is applied as a broadcast signal, and a plurality of associated services (programs). , Transport streams and / or networks are grouped as a bouquet, and the content of the association is identified as a bouquet type.

A digital broadcast transmission / reception system according to the present invention is a digital broadcast transmission / reception system in which a transport stream defined by MPEG-2 Systems is applied as a broadcast signal, the service when moving from an arbitrary service area to another service area. And information for specifying a plurality of services (programs), transport streams, and / or networks associated with each other as an alternative relationship.

[0010] A digital broadcast transmitting / receiving system according to the present invention is a digital broadcast transmitting / receiving system in which a transport stream specified by MPEG-2 Systems is applied as a broadcast signal, the service when moving from an arbitrary service area to another service area. A plurality of services (programs), transport streams, and / or networks associated as an alternative relationship of the above are grouped as a bouquet.

A digital broadcast transmitting / receiving system according to the present invention is a digital broadcast transmitting / receiving system in which a transport stream specified in MPEG-2 Systems is applied as a broadcast signal. A plurality of services (programs), transport streams, and / or networks associated with each other are grouped as a bouquet.

A digital broadcast transmission / reception system according to the present invention is a digital broadcast transmission / reception system in which a transport stream defined by MPEG-2 Systems is applied as a broadcast signal.
A plurality of services (programs), transport streams, and / or networks associated with each other in a linked transmission relationship performing a linked transmission in a cy Division Multiplex (cy Division Multiplex) method are grouped as a bouquet.

A digital broadcast transmitting / receiving system according to the present invention is related to a digital broadcast transmitting / receiving system in which a transport stream specified by MPEG-2 Systems is applied as a broadcast signal as being related to a simulcast that performs the same broadcast. A plurality of services (programs), transport streams, and / or networks are grouped as a bouquet.

[0014] A digital broadcast receiving apparatus according to the present invention comprises:
In a digital broadcast receiving apparatus that receives a digital broadcast to which an MPEG-2 Systems transport stream is applied as a broadcast signal, a plurality of associated services (programs), transport streams and / or networks are grouped as a bouquet, and the A transport stream containing control information whose content is identified as a bouquet type is received, and based on the control information, a plurality of services (programs), transport streams, and / or
Alternatively, a network is managed for each bouquet type, and a service (program), a transport stream, or a network to be received is switched according to the content of the association indicated by the bouquet type based on the managed control information. Is performed.

[0015] A digital broadcast receiving apparatus according to the present invention comprises:
In a digital broadcast receiving apparatus that receives a digital broadcast to which an MPEG-2 Systems transport stream is applied as a broadcast signal, a plurality of services (as service substitution relations when moving from an arbitrary service area to another service area) Program), a transport stream including a transport stream and / or control information indicating a network, and a plurality of services associated with the service (program) being received as the substitute relationship based on the control information. The service (program), the transport stream and / or the network are managed, and the service (program), the transport stream or the network to be received is determined based on the control information managed.
Switching to another service (program), a transport stream or a network is performed.

A digital broadcast receiving apparatus according to the present invention comprises:
In a digital broadcast receiving apparatus that receives a digital broadcast to which an MPEG-2 Systems transport stream is applied as a broadcast signal, a plurality of services (as service substitution relations when moving from an arbitrary service area to another service area) Program), a transport stream and / or a network are grouped as a bouquet, and a transport stream including control information indicating a plurality of services (programs), the transport stream and / or the network grouped as the bouquet is received. Then, based on the control information, a plurality of services (programs), transport streams and / or
Or managing a network, and switching a received service (program), transport stream, or network to another service (program), transport stream, or network based on the managed control information. I do.

A digital broadcast receiving apparatus according to the present invention comprises:
In a digital broadcast receiving apparatus that receives a digital broadcast to which an MPEG-2 Systems transport stream is applied as a broadcast signal, a plurality of services (programs) and a plurality of services are provided in which a broadcast signal provider is associated as affiliated station relations constituting an affiliated net Port stream and / or
Or, a network is grouped as a bouquet, a plurality of services (programs) grouped as a bouquet, a transport stream and / or a transport stream including control information indicating a network are received, and based on the control information, A service (program) that manages a plurality of services (programs), transport streams, and / or networks associated with the service (program) being received as the affiliated station relation, and receives the service (program) based on the control information managed. A program, a transport stream, or a network is switched to another service (program), a transport stream, or a network.

A digital broadcast receiving apparatus according to the present invention comprises:
In a digital broadcast receiving apparatus that receives a digital broadcast in which a transport stream of MPEG-2 Systems is applied as a broadcast signal, an OFDM (Orthogonal Frequen
A plurality of services (programs), transport streams, and / or networks associated as a linked transmission relationship performing a linked transmission in the cy Division Multiplex system are grouped as a bouquet, and a plurality of services (grouped as the bouquet) Program), a transport stream including a transport stream and / or control information indicating a network, and a plurality of services associated with the service (program) being received as the connection transmission relationship based on the control information. Service (program), transport stream and / or network, and manages the received service (program), transport stream or network based on the control information managed by the other service (program). ), And performs switching in the transport stream or a network.

A digital broadcast receiving apparatus according to the present invention comprises:
In a digital broadcast receiving apparatus for receiving a digital broadcast in which a transport stream of MPEG-2 Systems is applied as a broadcast signal, a plurality of services (programs), transport streams, and And / or grouping a network as a bouquet, receiving a plurality of services (programs) grouped as a bouquet, a transport stream and / or a transport stream including control information indicating a network, and based on the control information. , Manages a plurality of services (programs), transport streams and / or networks associated with the received service (program) in the simulcast relation, and manages the plurality of services (programs) based on the control information. Then, the received service (program), transport stream or network is switched to another service (program), transport stream or network.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a digital broadcasting system according to an embodiment of the present invention will be described in detail with reference to the drawings. A digital broadcasting system according to an embodiment of the present invention is a terrestrial digital broadcasting system 1 as shown in FIG.
Applied to As the contents to be broadcast in this digital broadcasting system, for example, a digital television broadcast (hereinafter referred to as a terrestrial DTV broadcast) transmitted by combining a moving image and audio information, and audio information (broadcast including image information). Digital broadcasting (hereinafter, referred to as terrestrial D audio broadcasting), data broadcasting transmitting various data used via a computer or various information terminals, or television broadcasting. It is applied to multimedia broadcasting in which various data are combined with and transmitted to audio broadcasting.

Hereinafter, as an embodiment of the present invention,
The terrestrial digital broadcasting to which the present invention is applied will be described. However, the present invention is not limited to terrestrial digital broadcasting.
The present invention can also be applied to digital broadcasting using satellites such as digital broadcasting and CS digital broadcasting.

As shown in FIG. 1, the digital broadcasting system 1 is a system in which a receiving apparatus 100 receives terrestrial broadcasting transmitted from a plurality of broadcasting stations 10, 20, and 30 in a digital manner.

Each of the broadcasting stations 10, 20, and 30 is provided with a transmitting device, and a broadcast wave transmitted from the transmitting device is transmitted from an antenna. Each broadcasting station 10, 2
Since the reach of broadcast waves transmitted from 0 and 30 is limited, the range in which each broadcast wave can be received by the receiving device 100 is set to the service areas 10a, 20a and 3 respectively.
Shown as 0a.

The terrestrial broadcast transmitted from each of the broadcasting stations 10, 20, 30 is, for example, MPEG-2 Systems (ITU-TH.
Broadcasting is carried out using a digital multiplexing method using 222.0, ISO / IEC 13818-1).

The modulation scheme of the terrestrial broadcast transmitted from each broadcasting station 10 includes, for example, OFDM (Orthogonal Frequencies).
(Quality Division Multiplexing) method is adopted.

As described above, in digital terrestrial broadcasting using MPEG-2 Systems, generally, each broadcast program having a start time and an end time, such as news or drama, is defined as an event. And a program in which a plurality of events are continuously arranged is referred to as a service. Then, a plurality of services are referred to as a transport stream,
This transport stream is modulated and transmitted as a broadcast wave.

Here, the range of the service area in the digital broadcasting system 1 will be described.

In the digital broadcasting system 1, a service area is set with an administrative division such as a prefecture as a basic unit. Further, in special areas such as the Kanto, Chukyo, and Kinki regions, service areas are set even in a wide area covering two or more prefectures. In the present invention, a service area covering a prefecture unit and a wide area is called a general area. Further, the service area is provided also using, as a basic unit, an administrative division smaller than a prefecture, for example, an administrative division such as a municipal government. The service area provided in units of municipalities is covered by, for example, a community broadcasting station whose antenna power is specified to be equal to or lower than a predetermined power. The service area covering the municipal unit is referred to as a small area in the present invention.

Here, the range of the service area has been described taking the administrative divisions of Japan as an example. However, it is needless to say that the service area is not accurately separated at the prefectural border or the city border. The method of dividing the area does not need to be particularly based on the administrative division. In addition, since the distinction between the general area and the small area is merely a difference in the relative size of the service area, for example, a service area that spans a plurality of cities may be set as a small area. Alternatively, it may be set as a general area.

In the digital broadcasting system 1, there are cases where broadcasting stations in different service areas form a cooperative relationship with each other through program production, organization, relaying, and broadcasting to form a series network. Such affiliated network stations broadcast the same event or service (program) in a service area covered by each broadcast station, for example, by relaying a transport stream generated by one broadcast station to another broadcast station. are doing.

When performing such relaying, each broadcasting station may transmit a broadcast wave on a different frequency channel, or if an OFDM system is used as a modulation system,
Broadcast waves may be transmitted on the same frequency channel. Generally, a network configured to transmit a broadcast wave at a different frequency for each service area uses an MFN (Multi-Fr
A network configured to transmit broadcast waves at the same frequency in each service area is a single frequency network (SFN).
It is called.

(Grouping by Bouquet) Next, a bouquet applied in the digital broadcasting system 1 will be described.

A bouquet refers to a set of a plurality of services (programs), transport streams, and / or networks associated with each other based on some relationship. Specifically, a set (group) of a plurality of services (programs), a set of a plurality of transport streams, or a set of one or more services (programs) and one or more transport streams, one or more transport streams Set and one or more network sets, 1
This is a concept showing a set of the above network and a set of one or more services (programs), a set of one or more services (programs), one or more transport streams, and one or more networks. The set may be formed beyond the boundaries of the network, for example,
A bouquet may be formed between the audio broadcast and the terrestrial DTV broadcast, and furthermore, depending on the content of the set,
A bouquet may be formed between terrestrial broadcasting and satellite broadcasting.

The relationship between services (programs), transport streams, and networks in which the digital broadcasting system 1 is grouped by bouquets is as follows.
For example, broadcast substitution relations, affiliated station relations, linked transmission relations,
There are the same broadcaster relationship, the same service area relationship, and simulcast relationship.

Hereinafter, the specific contents of the relationship linked by the bouquet will be described.

The broadcast substitution relationship indicates a substitution relationship between services (programs) between different service areas. That is, when moving from a certain service area to another adjacent service area, a service (program) in an adjacent service area which is replaced with a service (program) received in the service area before the movement.
The relationship is shown.

For example, it is assumed that a user is watching a service (program) while traveling by car or the like. At this time, if the car moves beyond the service area where the currently viewed service (program) is distributed,
That is, if the user crosses the area, the user cannot view the service (program). In such a case, the user may want to continuously view the service (program) having the same content as the service (program) watched before crossing the area in the destination service area. For example, if the user has watched a night game broadcast of the game between Giants and Tigers, the user desires to watch a night game broadcast of the game between Giants and Tigers even after crossing the area.

By the way, if the user crosses the area, the program guide or E-mail distributed in the service area after the movement is reached.
It is necessary to search for a similar service by searching for a PG or the like, and reset the frequency channel, program number, and the like. However, such a setting is very troublesome for the user.

For this reason, in the digital broadcasting system 1, an alternative relationship of broadcasting is defined as a relationship that associates with a bouquet, and alternative relationships between services (programs) between service areas are grouped by a bouquet in advance and provided to the user. I have to. By providing such information, the receiving apparatus can automatically switch to a service (program) that replaces the service (program) watched before moving when the service area is switched, or , A list of services (programs) grouped by a bouquet can be displayed on the monitor, thereby simplifying the resetting operation.

Although the description has been made by showing the alternative relationship of broadcasting for each service (program), the description is made on the basis of the transport streams, the networks, the service (program) and the transport stream, and the transport stream and the network. And the network and the service (program) and the service and the transport stream and the network may be grouped to define an alternative relationship.

The affiliated station relationship indicates a relationship between services (programs) broadcasted by broadcasters constituting the same affiliated net by the provider. The same broadcaster relationship indicates a relationship between services (programs) broadcasted by a broadcaster of the same broadcaster by a broadcast signal provider.

In some cases, broadcasting stations in different service areas form a cooperative relationship with each other through program production, organization, relaying, and broadcasting to construct a series network. It is conceivable that a plurality of broadcasters constituting the affiliated net broadcast the same program at the same time. However, if a currently viewed service (program) moves beyond the distributed service area while receiving a specific service (program) distributed from a specific affiliated net, the service (program) ) Can no longer be viewed. In this case, in order to continuously receive the service (program) of the affiliated network received before the crossing of the area, a program guide or an EPG distributed in the service area after the movement is searched and the same It is necessary to search for affiliated nets and reset frequency channels and program numbers. At this time, if the viewer stops receiving or changes to receive a broadcast provided by another broadcaster, the loss on the broadcast station side is large.

Therefore, in the digital broadcasting system 1,
An affiliated station relationship is defined as a relationship to be associated with a bouquet, and services (programs) broadcast from broadcast stations constituting an affiliated net are grouped in advance by a bouquet and provided to users. By providing such information, the receiving device, when switching the service area,
It is possible to automatically switch to the broadcasting station that is affiliated with the broadcasting station watched before moving, or to display on a monitor the affiliated nets that are grouped by bouquet, and to perform the resetting work. Becomes easier. For this reason, it is less likely that the viewer will stop receiving the signal when the service area crosses the border, or will change to receive a broadcast provided by another broadcaster.

The same can be said for affiliated stations when the same broadcaster is broadcasting in different service areas.

In the above description, the relationship between affiliated stations and the same carrier is shown for each service (program).
Between the transport stream and the network, and
The group may be grouped between the network and the service (program) or between the service, the transport stream and the network to define the affiliated station relationship.

The connection transmission relationship is based on OFDM (Orthogonal F
3 shows a relationship between transport streams that perform concatenated transmission in a frequency division multiplex system.

In terrestrial digital broadcasting, an OFDM system is generally employed as a broadcast wave modulation system in order to reduce the influence of reception interference due to multipath. ISDB-T (Intergr), a terrestrial digital broadcasting system in Japan
(ated Services Digital Broadcasting-Terrestorial)
However, the OFDM system is still employed. This OF
In the DM system, at the time of transmission, IFFT (Inverse Fast Fou
FT, and FFT (Fast Fourier T)
The modulation is performed by performing a “ransform”.

In ISDB-T, a concatenated transmission is defined in which OFDM signals transmitted to a plurality of frequency channels are multiplexed in the frequency direction and FFT-transformed collectively. By performing this concatenated transmission, information can be broadcast over a plurality of frequency channels without providing a guard band for preventing interference between channels, so that the frequency utilization efficiency can be improved.

On the receiving side, when performing channel switching between such frequency channels that have been connected and transmitted, since the IFFT is performed collectively, various parameters and timings are synchronized between the channels. Since it is taken, the synchronous operation in the demodulator can be continuously performed between the channels. Therefore, when performing channel switching between the channels combined by the link transmission, it is not necessary to newly perform a synchronization pull-in operation or the like.
Channel change time is shorter.

Therefore, in the digital broadcasting system 1,
A concatenated transmission relationship is defined as a relationship for associating with bouquets, and transport streams transmitted on frequency channels for which concatenation has been transmitted are grouped by bouquets and provided to users. By this means, when performing channel switching, it is possible to refer to whether or not the switching destination is performing concatenated transmission. If there is a channel change or the like in concatenated transmission, the synchronization detection operation in the demodulator is performed. It can be performed continuously, and the channel change time can be shortened.

The simulcast relationship indicates a relationship between services (programs) that perform so-called simulcast that performs the same broadcast.

For example, suppose that a car equipped with a car stereo capable of receiving terrestrial D audio broadcasting and satellite digital audio broadcasting enters a building and becomes difficult to receive the terrestrial D audio broadcasting currently being received. . At this time, in order to receive a simulcast broadcasting that is performing the same broadcast, the user needs to search again for a program guide, an EPG, or the like that is broadcast by satellite digital audio broadcasting, and set the receiving device.

For this reason, in the digital broadcasting system 1, a simulcast relationship is defined as a relationship to be associated with a bouquet, and the simulcast relationship is grouped by a bouquet in advance and provided to the user. Thus, when switching to the simulcast, for example, automatic switching can be performed, or services (programs) grouped by a bouquet can be displayed on the monitor, and resetting to the simulcast can be performed. Becomes easier.

Although the simultaneous broadcast relationship of broadcasting has been shown for each service (program), it has been described that transport streams are connected to each other, between networks, between services (programs) and transport streams, and between transport streams and networks. Simultaneous broadcast relations may be defined by grouping and associating between and between a network and a service (program) and between a service (program) and a transport stream and the network.

Next, a description will be given of a specific method of describing a bouquet in a transport stream defined by MPEG2 Systems.

In the digital broadcasting system 1 according to the present embodiment, information relating to bouquets is defined by a BAT defined by ARIB STD-B10, and this BAT is included in a transport stream and transmitted.

Also, the service list descriptor, the stuff descriptor, the bouquet name descriptor, the country-specific reception availability descriptor, the link descriptor, and the CA identification descriptor bouquet specified by ARIB STD-B10 are used to create a bouquet. The related information is described and transmitted in a transport stream.

In the present invention, in addition to the descriptor specified by ARIB STD-B10, a bouquet type descriptor is further defined, and information related to bouquet is described in the bouquet type descriptor. It is included in the transport stream and transmitted.

Hereinafter, the BAT and each descriptor will be described. FIG. 2 shows a data structure of a BAT (Bouquet Association Table) defined in ARIB STD-B10.

[Table_id] indicates what the network information section indicates. Here, a value “0x4A” is described. [section_syntax_in
[dicator] indicates a section syntax instruction. Its value is always "1". [reserved_future_use] is a reserved extended area that can define some information in the future. [reserved] is a reserved area. [sec
tion_length] is C immediately after the section length field.
The number of bytes of the section up to the end of the section including the RC (Cyclic Redundancy Check) is defined.

[Bouquet_id] is an ID for identifying a bouquet. Details of this ID will be described later. [version_number] is an identifier indicating the version number of the sub-table. The version number is incremented by 1 when the information in the sub-table changes. When the value becomes 31, the value returns to 0 next. [current_n
ext_indicator] indicates that the sub-table is the current sub-table when this value is “1”,
If "0", the sent sub-table has not yet been applied, indicating that the next sub-table will be used.

[Section_number] indicates a section number. When the section is the first section in the sub-table, the value is “0x00”. The section number is incremented by “1” each time a section having the same [table_id] and [bouquet_id] is added.

[Last_section_number] indicates the number of the last section of the subtable to which the section belongs, that is, the section having the largest section number.

[Bouquet_descriptor_length] is a bouquet descriptor loop ([for (i = 0; <N; i ++) {descripte
r ()}] loop).

The descriptor area of the bouquet descriptor loop (“for
(i = 0; <N; i ++) {descripter ()} ”in the first descriptor area [des
cripter ()] contains a bouquet type descriptor [bouquet_type_desc
riptor] or bouquet name descriptor [bouquet_name_descriptor]
Is always described, and the staff descriptor [stuffing_desc
riptor], country availability descriptor [country_availablity_de
scriptor], link descriptor [linkage_descriptor], CA
An identification descriptor [CA_identifer_descriptor] is described as needed.

[Transport_stream_loop_length] is a transport stream loop ([“for (i = 0; <
N; i ++ {transport_stream_id ~ loop of descripter ()}]). In the transport stream loop, information on all transport streams or services (programs) grouped by the BAT is described. That is, this B
The loop is rotated by the number of transport streams grouped by the AT.

[Tra] in the transport stream loop
[nsport_stream_id] is an ID for specifying each transport stream grouped by the BAT. By describing the TS-ID [transport_stream_id], the receiving channel can be switched to the transport stream grouped by the bouquet. That is, NIT (Network Information
table) TS-ID of the terrestrial distribution system descriptor area in
By referring to [transport_stream_id], it is possible to recognize a service area (identified by an area code) and a frequency channel in which the transport stream is transmitted.

[Original_network_id] indicates the [network_id] of the original network of the transport stream. [reserved_future_use] is a reserved extended area that can define some information in the future. [tra
nsport_descriptor_length] indicates the total number of bytes of the following transport descriptor loop (for (i = 0; <N; i ++) {descripter ()}] loop).

The transport descriptor loop (“for (i = 0;
<N; i ++) {descripter ()} ”in the second descriptor area [descripter
In er ()], a service list descriptor and a stuff descriptor [stuffing_descriptor] described below are described as necessary. By describing this service list descriptor, bouquets are grouped for each service (program), transport streams and services (programs) are mixed, and services (programs) and networks are mixed. Can be grouped.

[CRC_32] indicates a CRC, and is an error code including a CRC value such that the register output becomes "0" after processing the entire section.

FIG. 3 shows a service list descriptor [service_l
shows the data structure of ist_descriptor ()]. The service list descriptor is a transp corresponding to the service belonging to the bouquet.
ort_stream_id, network_id, service_id, service_typ
This is a descriptor that can enumerate e. [descriptor_t
[ag] is a tag for identifying this descriptor from other identifiers.
[descriptor_length] indicates the total byte length of the data portion immediately following this. [transport_descriptor_length]
Indicates the total number of bytes of the following loop (the loop of “for (i = 0; <N; i ++) to}]”). Inside the loop, [s
ervice_id] and [service_type] are described. [service_i
d] is an ID for uniquely identifying a service (program) included in the transport stream.

Here, it is not always necessary to set a limit on the uniqueness of the service ID. However, if the total number of service IDs is allowed by the number of bits of the service ID, the service I
By making D unique throughout Japan, for example, confusion is avoided and convenience is improved.

[Servece_type] is the type of service (program) defined here, for example, audio broadcasting,
Indicates types such as television broadcasting and data broadcasting.
Note that this service list descriptor includes transport_stre
am_id and network_id are not described directly, but [service_
list_descriptor ()] is described in the transport stream loop, so that it can be uniquely defined.

FIG. 4 shows a bouquet name descriptor [bouquet_name_de
scriptor ()] shows the data structure. Bouquet name descriptor [bouq
uet_name_descriptor ()] is a descriptor indicating a bouquet name in a text format. [descriptor_tag] is a tag for identifying this descriptor from other identifiers. [descriptor_length]
Indicates the total byte length of the data portion of the loop immediately following this. [Char] is described in the loop. [char] is assigned a character code.

FIG. 5 shows a link descriptor [linkage_descripto].
r] shows the data structure.

The link descriptor [linkage_descriptor] can provide a link to a service belonging to a bouquet operator.

[Descriptor_tag] is a tag for identifying this descriptor from other identifiers. [descriptor_length] indicates the total byte length of the data portion immediately following this. [transpo
[rt_stream_id] indicates a transport stream including a service (program) specified as a link destination. [original_network_id] indicates the original network of the network that includes the service (program) indicated as the link destination.

[Service_id] indicates a service (program) specified as a link destination.

[Linlage_type] indicates a link type. As the type of link, a service including information on the bouquet is referenced (0x01), and an EPG related to the bouquet is referred to.
(0x02), and a transport stream carrying comprehensive program sequence information (0x04). Arbitrary data can be described in [private_data_byte].

FIG. 6 shows an extended link descriptor [lin
kage_descriptor].

This extended link descriptor [linkage_descr
[iptor] can provide links to services belonging to bouquet operators, but also has a service loop so that multiple services (programs) can be listed.

[Descriptor_tag] is a tag for identifying this descriptor from other identifiers. [descriptor_length] indicates the total byte length of the data portion immediately following this. [linkage
_type] identifies the type of link. [private_data_le
[ngth] indicates the total number of bytes in the private data loop that follows. [Praivate_data_byte] in the loop
Can describe a link type name.

The extended link descriptor is provided with the following service loop. Therefore, a plurality of link destinations can be listed. In the service loop
[transport_stream_id] indicates a transport stream including a service (program) indicated as a link destination. [original_network_id]
Indicates the original network of the network containing the service (program) indicated as the link destination. [service_id] indicates a service (program) indicated as a link destination.

[Transport_stream_id] indicates a transport stream including a service (program) specified as a link destination. [original_ne
twork_id] indicates the original network of the network that includes the service (program) indicated as the link destination.

[Service_id] indicates a service (program) specified as a link destination.

[Linlage_type] indicates a link type. As the type of link, a service including information on the bouquet is referenced (0x01), and an EPG related to the bouquet is referred to.
(0x02), and a transport stream carrying comprehensive program sequence information (0x04). Arbitrary data can be described in [private_data_byte].

Staff Descriptor [stuffing_descriptor]
Is a descriptor used to invalidate a previously encoded descriptor or to insert a dummy descriptor for table stuffing.

The country reception availability descriptor [country_availablity
_descriptor] is a descriptor that enumerates receivable or non-receivable countries.

The CA identification descriptor [CA_identifer_descripto]
r] can transmit data about CA systems when a service is generally protected by conditional access.

FIG. 7 shows a bouquet type descriptor [bouquet_type_
Descriptor] indicates the data structure. The bouquet type descriptor [bouquet_type_descriptor] identifies the service (program) grouped by the bouquet and the contents of the association of the transport stream. [descrip
[torr_tag] is a tag for identifying this descriptor from other identifiers. [descriptor_length] indicates the total byte length of the data portion immediately following this. [bouquet_type] indicates a bouquet type that specifies the content of the association. For example, FIG.
"0x00" is an adjacent substitution relation, and "0x0"
“1” is affiliated station relationship, “0x02” is connected transmission relationship, “0”
The bouquet type is identified as “x03” as the same business operator relationship, “0x04” as the same service area relationship, and “0x05” as the simulcasting relationship.

As described above, the bouquet identification descriptor identifies the service (program) grouped by the bouquet and the contents of the association of the transport stream. Therefore, it is possible to simply identify a set of a plurality of services (programs) or transport streams.

Note that the [bouquet_type] indicating the bouquet type is not described in the bouquet type identifier, and the [bouquet_type] is added to the bouquet name descriptor [bouquet_name_descriptor ()].
May be described.

For example, as shown in FIG. 9, [bouquet_type] indicating a bouquet type may be described following a loop in which characters in the bouquet name descriptor are described.

Next, the bouquet ID (bouquet_id) defined by the BAT will be described.

The bouquet ID is defined by the BAT as described above, and is an ID for uniquely identifying each bouquet.

The bouquet ID (bouquet_id) is uniquely assigned to every area covered by the digital broadcasting system 1, for example, every bouquet defined in the whole area of Japan when applied to Japan. Further, the terrestrial DTV broadcast and the terrestrial D audio broadcast are uniquely assigned to each other. In other words, the same bouquet ID (bouquet_id) is not assigned to the bouquet broadcast by the terrestrial DTV broadcast and the bouquet broadcast by the terrestrial D audio. Furthermore, a plurality of broadcast media can be grouped by a bouquet, and a combination of these media is uniquely assigned to each other.

FIG. 10 shows such a bouquet ID (bouquet_
An example of a specific configuration of (id) will be shown.

The bouquet ID (bouquet_id) is 16 in total.
It consists of bit data.

Of the 16 bits, the broadcast media is identified and 4 bits including the spare (1 to 4 from the top in FIG. 10)
Bit) is assigned. If the bouquet is grouped only within the terrestrial DTV broadcast, for example, “0x01”,
A bouquet grouped only within the terrestrial D audio broadcast is identified by, for example, “0x02”, and a bouquet grouped by combining both the terrestrial DTV broadcast and the terrestrial D audio broadcast is identified by, for example, “0x03”. Is done. In addition, BS digital audio broadcasting, BS
Broadcast media such as digital DV broadcasting and CS digital broadcasting may be added for identification. If the bouquet ID is identified across the media in this way, it can be grouped by a bouquet with services (programs) provided by other broadcast media.

Of the 16 bits, 4 bits (the 5th to 8th bits from the top in FIG. 10) including the spare are assigned to identify the bouquet type. This bouquet type is
For example, it is identified in the same manner as [bouquet_type] shown in FIG.

In order to uniquely identify each bouquet within the bouquet type among all 16 bits, the bouquet identification information allocates 8 bits (9th to 16th bits from the top in FIG. 10). . As a result, for each bouquet type,
256 bouquets can be uniquely identified.

By making such an assignment, a unique bouquet ID (bouque ID) is provided for all services in Japan.
t_id), and the data structure of the bouquet ID (bouquet_id) can be shared between the terrestrial DTV broadcast and the terrestrial D audio broadcast. Bouquets formed across can also be identified, and bouquets within each media can be uniquely distinguished.

The concept of the hierarchy of grouping based on the bouquet is considered to be the hierarchy of digital broadcasting media, digital terrestrial broadcasting, network ID, TSID, and service ID. Therefore, (1) Relevance at the network ID level (2) Relevance at the TSID level (3) Relevance at the service ID level Can be. In order to realize such a concept of layering, description is made in the BAT as follows.

When describing the relevance at the level of the network ID, in the BAT TS loop, networ
Set k_id to the desired value and set transport_stream_id to netwo
rk_id is the value of the default TS. At this time, do not describe the service list descriptor, or
Specify the default service_id of stream_id in the service list descriptor.

When describing the relevance at the TSID level, the network_id, tran
Set sport_stream_id to the desired value. At this time, do not describe the service list descriptor, or
Specify the default service_id of t_stream_id in the service list descriptor.

To describe the relevance at the service ID level, the network_id,
Set transport_stream_id to the desired value. further,
Specify the service in the service list descriptor.

(Configuration of Receiver) Next, the receiving apparatus 100 for receiving the transmitted terrestrial broadcast will be described.

[0108] As shown in FIG.
A broadcast signal is input from a reception antenna 120 that receives a terrestrial broadcast wave transmitted by the transmission device 50, and a demodulation unit 101 that performs a digital demodulation process on the broadcast signal. A decoding unit 102 that performs a decoding process on the signal subjected to
The extraction unit 103 extracts digital data multiplexed on the transport stream extracted by the extraction unit 103 and outputs the digital data according to the content of the digital data, and the digital data extracted by the extraction unit 103 is input. Audio signal, video signal,
An audio decoder 104, a video decoder 105, and a data decoder 106 for generating a data signal;
A GPS receiving unit 107 that detects a position based on a signal transmitted by an S (Global Positioning System), a memory 108 that holds PSI / SI information included in a transport stream, and controls each unit of the receiving device 100. The system includes a system controller 109 for performing the operation, an operation input unit 111 for receiving an operation input from the user, and a display unit 112 for displaying data and the like to the user.

[0109] Demodulation section 101 performs digital demodulation processing on the broadcast signal input from reception antenna 120.

[0110] The decoding section 102 decodes the signal subjected to the digital demodulation processing by the demodulation section 101 by performing deinterleaving processing, error correction processing, and the like, and extracts a transport stream.

[0111] Extracting section 103 determines each T based on the PID (packet identification number) described in the TS packet in the transport stream input from decoding section 102.
S packets are extracted, and it is determined whether digital data included in each TS packet belongs to an audio signal or a video signal, and the like. Output to the decoder 105 and the like. Also, the extraction unit 103
Are NIT, S included in the transport stream.
By extracting PSI / SI information such as DT and BAT,
Each information included in the SI / SI information is output to the system controller 109.

The audio decoder 104, the video decoder 105, and the data decoder 106 respectively perform decoding processing on the digital data input from the extraction unit 103 to generate audio signals, video signals, and data signals. .

[0113] In the present invention, for example, in the case where an audio broadcast of only audio information is transmitted from a broadcasting station, the video decoder 105 and the data decoder 106 in the receiving apparatus 100 can be omitted.

[0114] The GPS receiver 107 is a GPS (Global P
ositioning system)
The position of the receiving device 100 is detected based on this signal.
Since the receiving device 100 includes the GPS receiving unit 107, the position of the receiving device 100 can be known.

The receiving device 100 is a GPS receiving unit 1
However, the present invention is not limited to the configuration including 07, and another unit for detecting the reception position may be provided. As such means, for example, a reference signal transmitted from a predetermined terrestrial broadcasting station may be received, and the current position may be detected based on the reference signal. Further, for example, an input unit capable of operating and inputting various information is provided, and a zip code, an area code, a prefecture name,
The current position may be determined based on a service area name or the like.

The memory 108 can be composed of various rewritable semiconductor memories, and may be, for example, detachable from the receiving device 100.

The system controller 109 controls the operation of each unit by exchanging various signals with each unit of the receiving apparatus 100. Further, information included in PSI / SI information such as NIT, SDT, and BAT input from the extraction unit 103 is extracted and stored in the memory 108.

The operation input unit 111 is used by the user to perform various operations on the receiving apparatus, such as a reception start command, a service switching command, and setting of a service number.

The display unit 112 is composed of, for example, a liquid crystal display device and displays a service number, a service name, additional information, and other data to the user.

Next, the database constructed on the memory 108 will be described.

In the memory 108, a terrestrial distribution system list, a service list, and a bouquet list for each bouquet type are constructed as a database.

System controller 1 of receiving apparatus 100
09 builds a terrestrial distribution system list and a service list as shown in FIGS. 12 and 13 based on the NIT and SDT input from the extraction unit 103. In NIT,
The terrestrial distribution system descriptor and the service list descriptor are described, and by referring to these, the terrestrial distribution system list and the service list can be constructed. In the terrestrial distribution system list and the service list, information on transport streams transmitted in all service areas included in the PSI transmitted in the NIT is information “transport_stream_id” that is information for identifying each transport stream. Is based on the table. However, it is not always necessary to always store all information in order to reduce the amount of memory of the receiving device.

For example, if “transport_stream_id” is “T
Information such as “frequency”, “mode”, “guard interval”, and “area code” necessary for receiving the transport stream that is “S1” is “tr”.
By referring to the terrestrial distribution system list based on “ansport_stream_id”,
z "," 10 "," 11 "," 10101100001 "
1 ”, and similarly,“ transport_stream
Information such as “service ID” and “service type” required to specify a service (program) included in the transport stream whose “_id” is “TS1” is referred to by referring to the service list. Service 2 "and" audio broadcasting ".

[0124] Therefore, the receiving apparatus 100 can switch the reception from the service (program) being received to another service (program) by referring to the terrestrial distribution system list and the service list.

The list of physical conditions and service information required to receive a predetermined service (program) such as the service list and the terrestrial distribution system list is hereinafter simply referred to as an access list.

Further, as shown in FIG. 14, the system controller 109 of the receiving apparatus 100 extracts a BAT from the transport stream including the currently received service (program), and outputs the “service” described in each BAT. A bouquet list listing the “ID” and “TS-id” and, if necessary, the “network ID” is constructed. This bouquet list is constructed for each bouquet type. For example, a list is constructed such that a bouquet type can be identified, such as an alternative relation bouquet list or a simulcast bouquet list.

By constructing the bouquet list in this manner, the currently received service (program)
It is possible to recognize other services (programs) and transport streams associated with a bouquet. For example, when switching bouquet-related services, refer to these lists to switch immediately. Can be.

For example, when a service having an alternative relationship with an adjacent service area is received because the service area has been exceeded, a service ID and a TS-id are extracted by referring to a bouquet list in which the bouquet type has an alternative relationship. . Subsequently, a transport stream having the same area code as the destination is searched from the access list, and the frequency, mode, and guard interval are extracted therefrom, and reception is started.

When receiving services related to affiliated stations, the same business operator, and simultaneous broadcasting, the same processing as in the alternative is performed, and reception is started.

[0130] Further, the connection transmission relationship is processed as follows.

When the reception switching operation from the service (program) being received to another service (program) is performed, the system controller 109 firstly stores the memory 1
Reference is made to the bouquet list relating to the connection transmission constructed on 08. Here, when the transport stream to be switched to is not indicated in the bouquet list, normal reception start processing is performed. On the other hand, when the transport stream to be switched is indicated in the bouquet list, the channel is switched while maintaining the synchronous operation at the time of demodulation.

It should be noted that the bouquet does not always define all bouquet types for each service (program) or transport stream. Therefore, for a bouquet type having no bouquet, a bouquet list is set. You do not need to build it. For example, if a service (program) is broadcast from an independent station that has no affiliated station,
A bouquet list related to affiliated stations is not constructed, and a bouquet list related to connection transmission is not constructed when connection transmission is not performed.

Also, since the bouquet differs for each service (program), the bouquet list is updated when the service (program) is switched.

Next, FIG. 15 shows an external configuration of the receiving apparatus 100.

Using the operation input unit 111, the receiving apparatus 100 can select a desired service (program) in the service area, transmission master, and service hierarchy, and directly input a service (program) number. To select the desired service (program). Also,
The present receiving apparatus 100 can select an alternative service or affiliated station when moving to a service area, and can select a simulcast when the receiving service becomes difficult to receive.

The receiving apparatus 100 has a function of searching for a receivable service (program) when a service (program) to be received is unknown. Be executed.

The display section 112 has a display area for displaying information necessary for the reception frequency and the EPG in addition to the area name, the transmission master name, the service name, and the service additional information.

The operation input unit 111 includes a channel (transmission master) selection button 121 and a service selection button 1
22, an area selection button 123, and a function button 124
, Numeric button 125, alternative broadcast selection button 126
, A series selection button 127 and a simulcast selection button 128.

The channel selection button 121 is provided for selecting a channel (transmission master) in the currently selected service area.

The service selection button 122 is provided for selecting a service (program) in the currently selected channel (transmission master).

The area selection button 123 is
It is provided for selecting a service area to which 00 belongs. Further, because of the limitation of the number of channel selection buttons 123, it is also used for switching a channel group that cannot be displayed by the number of selection buttons in the same service area.

As the function buttons 124, a B button, an F button
There are various function buttons such as a button, a P button, and an S button.

The B button is a button for switching between a terrestrial DTV broadcast band and a terrestrial D audio broadcast band.

The F button is a button for instructing the start of frequency input when selecting a channel (transmission master) by directly inputting a frequency.

The P button is a button for instructing the start of service (program) input when directly selecting a service (program) by directly inputting a service (program).

The S button is a button for instructing the start of a search when searching for a receivable frequency.

The numerical value button 125 is a numerical value input button for inputting a numerical value.

The alternative broadcast selection button 126 is a button for selecting an alternative service being broadcast in the destination service area, for example, when the service being received becomes difficult to receive because the user has moved beyond the service area. is there. When the user presses the substitute broadcast button 126, the system controller 109 searches the bouquet list of the substitute relation constructed on the memory 108. If the bouquet list has an alternative service in the destination service area, the service ID, TS-id and network ID
And extract Then, the service ID and the TS-id
Further, the access list is searched based on the network ID and the network ID, and a frequency, a mode, and a guard interval are extracted therefrom, and reception is started.

By providing the alternative broadcast button 126 in this way, it is possible to easily switch to the alternative broadcast being broadcast in the adjacent service area when the area crosses the border. For example, if it becomes difficult to receive the giants vs. tigers while watching mobile,
You can easily switch to Giant vs. Tigers night broadcasting that is being broadcast at your destination.

When there are a plurality of alternatives, the alternative may be switched to the next alternative each time the alternate broadcast selection button 126 is pressed, or a list of alternatives may be displayed and the numeric button 125 or the channel selection button 121 May be selected.

The series selection button 127 is used when the service area is moved, including, for example, a case where the service area by car is moved geographically continuously and a case where the service area is moved geographically discontinuously such as when moving or traveling. , A button for selecting an affiliated station set in some form, such as an affiliated station set in advance or an affiliated station that the user frequently views. When the user presses this affiliate selection button 127, the system controller 109 searches the affiliated station bouquet list constructed on the memory 108. If the bouquet list has an affiliated station service in the service area of the movement destination, the service ID, TS-id, and network ID are extracted. And
The access list is further searched based on the service ID, the TS-id, and the network ID, and a frequency, a mode, and a guard interval are extracted therefrom, and reception is started.

By providing the affiliate selection button 127 in this way, even if the user moves to any service area in Japan, the broadcast of the affiliated station set can be easily received. For example, no matter where you move throughout Japan, for example, an affiliated NHK station can immediately set a channel and start receiving without referring to a program guide or EPG.

If there are a plurality of affiliated stations, the system may be switched to the next affiliate each time the affiliate select button 127 is pressed, or a numeric list button 125 or channel select button 121 may be displayed by displaying the affiliate list. May be selected.

Simultaneous broadcast button 128 is, for example, a service (program) that is located beneath a building and is currently being received.
This button is used to select a simulcast that performs the same broadcast when it becomes difficult to receive the broadcast. When the user presses the simulcast button 128, the system controller 109 searches for a bouquet list related to simulcast, which is constructed on the memory 108. If this bouquet list has simulcast, the service ID and TS
-Extract id and network ID. Then, based on the service ID, the TS-id and the network ID, an access list (or a satellite distribution system list or the like in the case of simultaneous broadcasting in the satellite broadcasting) is searched, and the frequency, mode, guard interval and the like are obtained therefrom. Then, reception conditions such as are extracted, and reception is started.

When there are a plurality of simultaneous broadcasts, the system may be switched to the next series each time the simultaneous broadcast button 128 is pressed, or a list of simultaneous broadcasts may be displayed and a numerical button 125 or a channel selection button may be displayed. The selection may be made at 121.

Next, a processing procedure for selecting a specific service will be described.

First, the service area to which the receiving device 100 belongs is selected by the area button 123. The channel group belonging to the selected service area is displayed on the display unit 122. If the desired channel is not displayed, the process is repeated until the desired channel is displayed by the area button 123.

When the desired channel (transmission master) is displayed on the display section 2, the desired channel is selected by the channel selection button 121 corresponding to this display. When a desired channel is selected, a specific service included in the selected channel is presented. Here, presentation means audio output, image output, data decoding and display or audio output, and output from a terminal. In addition, the specific service is a service presented when the same channel was selected last time, a service (program) first arranged in the PMT of the channel, or a service predetermined in operation or the like. And so on.

If the desired service (program) is not presented by the channel selection, the desired service is selected by the service selection button 122. The service selection button 122 cyclically selects a service in the forward / reverse direction from among the service group listed in the PMT.

Next, the service selection processing procedure for directly inputting the reception frequency will be described.

First, an instruction to start frequency input is given by the F button, and the frequency is directly designated by the numerical buttons 125. If the service is being performed on the specified frequency,
The service area to which the receiving device 100 belongs is specified from the area code (area_code) described in the NIT. At the same time, the specified service area name, transmission master name, and the like are displayed on the display unit 112. Subsequently, the in-channel service (program) is selected in the same manner as in the previous section.

Next, a service selection processing procedure for directly inputting a service (program) will be described.

First, a service input start instruction is given by the P button, and a service (program) number is directly designated by the numerical buttons 125. If the service (program) number exists in the database constructed in the memory 108 in the receiving device 100, the frequency is extracted therefrom to perform channel selection, and the designated service (program) number is selected. Processing for the transport stream as described above. At this time, the display unit 11
2 displays a service area name, a transmission master name, and the like. Information to be displayed may be extracted from a database constructed in the memory 108 in the receiving device 100, or may be newly extracted from a received signal. You may.

The configuration of the receiving apparatus 100 is shown for the purpose of briefly describing the relationship between the processing at each stage and the buttons of the apparatus. A so-called multi-function button or a multi-screen that realizes a plurality of functions is provided. May be used.

Next, a configuration example of a database of information on affiliated stations will be shown.

In memory 108, an access list including services distributed in the service area is stored so that receiving apparatus 100 can receive services (programs) distributed in the service area where the receiving apparatus 100 is currently located. deep. Furthermore, in consideration of mobile reception, it is ideally desirable that an access list for another service area be stored.

However, if an access list for another service area is stored in the memory 108,
The storage capacity is wasted.

Therefore, as shown in FIG. 16, for example, an access list for a service (program) distributed in the service area where the receiving apparatus 100 is currently located,
The access list for the service area is stored in the memory 10 for the affiliated station registered as the default.
8 is stored.

By storing the access list relating to the affiliated station in the memory 108, the following processing can be performed when the service area is moved.

For example, it is assumed that receiving apparatus 100 is located in service area 2 before moving, and has received the broadcast of affiliated station 2. In this case, the access list relating to the service distributed in the service area 2 and the access list of the service area (areas 1, 2, 3,...) Of the default affiliated station (in this case, affiliated station 2) are stored in the memory 10.
2 is stored. Here, it is assumed that the receiving apparatus 100 has moved from the service area 2 to the service area X across the area. In this case, the access list of the service area 2 before the movement cannot be used anymore. Therefore,
First, the area code of the service area X is input by some means (for example, it may be automatically input by a GPS or the like), and information of the affiliated station 2 set as default from the access list (frequency channel, guard Interval, TS-id, etc.) and the affiliated station 2
Is received. Furthermore, if information on another station broadcast in the service area X is also transmitted from the broadcast wave of the affiliated station 2 set to the default by the broadcast wave of the affiliated station 2, the service area X of the movement destination , The information of the other station broadcasted on the service area X is also acquired, and the access list for the service distributed in the service area X is updated.

By constructing an access list of a service area for a predetermined affiliated station as described above, an access list can be constructed with a minimum memory capacity. Information about services (programs) distributed in the area can be obtained.

[0172] Further, by causing the receiving apparatus to perform such processing, PSI / SI such as NIT or SDT to be broadcasted can be obtained.
Can be set to the minimum transmission amount, and the transmission efficiency can be increased. In addition, since each broadcasting station transmits information on multiple stations in the same service area, it can have a function as a so-called portal station.

The affiliated station registered as the default may be the affiliated station currently being viewed, or the receiving apparatus 1
May be affiliated stations that are frequently used by viewers at 00,
A affiliated station that is always distributed over a service area such as a national broadcast may be used.

In the above, an example has been described in which a set of a plurality of services (programs) and transport streams is identified by a bouquet.
The connection transmission descriptor may be newly defined to identify a service (program) or a set of transport streams.

Hereinafter, these descriptors will be described.

(Simultaneous Broadcast Descriptor) Simultaneous broadcast descriptor [simul_broadcasting_descriptor ()] is a descriptor capable of listing services to be simultaneously broadcast. This simulcast descriptor [simul_broadcasting_desc
riptor ()] is an NIT (Network Information T
able), SDT (Service Description Table) or E
Simultaneous broadcasting for services (programs) or events described in IT (Event Information Table) and defined in these tables can be specified.

FIG. 17 shows a simulcast descriptor [simul_broad].
This shows the data structure of casting_descriptor ()].

[Descriptor_tag] is a tag for identifying this descriptor from other identifiers. [descriptor_length] indicates the total byte length of the data portion immediately following this. [transpo
[rt_stream_id] is an ID for identifying a transport stream ID including the simulcast. [origi
[nal_network_id] indicates the network ID of the original network of the transport stream including the simulcast. [service_id] is an ID for identifying a service (program) to be a simultaneous broadcast.

When describing in the NIT, it is described in the first descriptor loop or the second descriptor loop.

The description in the first descriptor loop is applied when two or more networks are broadcasting the exact same program or program group.

The description in the second descriptor loop is applied when two or more transport streams are broadcasting exactly the same program or program group.

FIG. 18 shows an SDT (Service Description Ta).
ble).

[0183] The SDT is a table that defines services included in a specific transport stream.

[Table_id] indicates what this service description section is. The value “0x42” when the SDT is for the own network, and “0x46” when the SDT is for another network. Is described. [section_syntax_indicator] indicates a section syntax instruction. Its value is always "1". [section_length] specifies the number of bytes of the section from immediately after the section length field to the end of the section including the CRC (Cyclic Redundancy Check).

[Reserved_future_use] is a reserved extended area in which some future information can be defined. [reserved] is a reserved area. [transport_s
[tream_id] is an ID for identifying a transport stream including a service defined by this SDT. [version_number] indicates the version number of the sub-table. [current_next_indicator] indicates that the sub-table is the current sub-table when this value is “1”, and when “0”, the sub-table to be sent is not applied yet, and the next sub-table is not applied. Indicates that a table is used.

[Section_number] indicates the number of the section, and has a value of "0x00" when it is the first section in the sub-table. This section number has the same [table_id], [transport_stream_id] and [network_i
The value is added by “1” for each addition of the section having [d]. [last_section_number] indicates the section number of the last section in the sub-table.

[Original_network_id] indicates [network_id] of the original network. In the service loop, [service_id] is an ID for identifying the service from other services. [EIT_schedule_flag]
If this value is "1", the EIT of the service
(Schedule) information indicates that it is present in the current transport stream, and if it is “0”, it indicates that EIT (schedule) information of the service does not exist in the current transport stream.

[EIT_present_following_flag] indicates the EIT (current / current) of the service when this value is “1”.
Next) Indicates that the information is in the current transport stream, and if it is "0", the EIT of the service
Indicates that (current / next) information is not present in the current transport stream. [running_status] indicates the status of the service such as non-execution, start within several seconds, stop, and execution.

[Free_CA_mode] indicates that the service is not scrambled when its value is "0", and that the service is controlled by the CA system when its value is "1". . [descriptor_leng
[th] indicates the total number of bytes of the loop of the following descriptor (descripter ()). And this [descripte
r ()], the simulcast descriptor [simul_broadcast
ing_descriptor ()] is described, and the correspondence between the service ID and the simulcast is established.

FIG. 19 shows EIT (Event Information Tabl).
The data structure of e) is shown.

The EIT is a table showing time-series information on events included in each service.

[Table_id] indicates what the service description section indicates. In the case of the current / next event information of the own transport stream, “0x4E” is described. In the case of current / next event information of another transport stream, "0"
x4F "is described. If it is the schedule information of the event of the own transport stream, "0x5
0-0x5F "is described. In the case of schedule information of an event of another transport stream,
“0x60 to 0x6F” is described.

[Section_syntax_indicator] indicates a section syntax instruction. Its value is always "1". [section_length] specifies the number of bytes of the section from immediately after the section length field to the end of the section including the CRC (Cyclic Redundancy Check).
[reserved_future_use] is a reserved extended area that can define some information in the future. [reserved]
Is a reserved area. [service_id] is the EIT
Is an ID for identifying a service that includes the event described in. [version_number] indicates the version number of the sub-table.

[Current_next_indicator] indicates that the sub-table is the current sub-table when this value is "1", and when "0", the sub-table to be sent is not applied yet, Indicates that the next sub-table will be used.

[Section_number] indicates a section number. When the section is the first section in the sub-table, the value is “0x00”. This section number has the same [table_id], [transport_stream_id] and [network_i
The value is added by “1” for each addition of the section having [d]. [last_section_number] indicates the section number of the last section in the sub-table. [trans
[port_stream_id] is an ID for identifying a transport stream including the event defined by the EITDT.

[Original_network_id] indicates [network_id] of the original network. [segment_last_section_nu
[mber] specifies the number of the last section of this segment of the sub-table.

[Last_table_id] indicates a table ID for identifying a table used. In the event loop, [event_id] is an ID for uniquely identifying the event from other events. [start_tim
e] indicates the start time of the event. [duration] indicates the duration of the event. [running_status] indicates the status of the service such as non-execution, start within several seconds, stop, and execution. [free_CA_mode] indicates that the event is not scrambled when the value is “0”, and indicates that the event is controlled by the CA system when the value is “1”. [descr
[iptor_length] indicates the total number of bytes of the loop of the following descriptor (descripter ()).

[0198] Then, the above-mentioned simulcast descriptor [simul_broadcasting_descriptor ()] is added to [descripter ()].
Is described, and the correspondence between the event ID and the simulcast is established.

By defining the simultaneous broadcast descriptor as NIT, SDT, or EIT, the receiving apparatus can create a service list of the service (program) being received or the simultaneous broadcast of the event. The service list of the simulcast includes a service ID [service_id] designating a service to be a simulcast,
A transport stream ID [transport_stream_id] including the service and a network ID [network_id] of a network for simultaneous broadcasting are created. When switching the channel to the simulcast, the receiving device extracts information, such as a frequency, a mode, and a guard interval, which are not included in the service list of the simulcast, from other NITs.

(Concatenated Transmission Descriptor) ISDB-Tn, which is a terrestrial digital audio broadcasting system adopted in Japan, employs an OFDM system as a modulation system. As shown in FIG. 20, it is defined by MPEG-2 Systems. The transmission data is configured in units of data (hereinafter, referred to as data segments) composed of a plurality of transport packets (TSPs). Further, a pilot signal (SP [Scattered Pilot], CP [Continua]
l Pilot], TMCC [transmission and Multiplexing C
Onfiguration Control] and one or three OFDM blocks (hereinafter, referred to as OFDM segments) to which AC (Auxiliary Channel) is added, and transmit them in the frequency direction. One OFDM segment has a bandwidth of 6/14
MHz. A format for transmitting one OFDM segment is called a one-segment format, and a format for transmitting three OFDM segments is called a three-segment format.

In the three-segment format, one OFDM segment in the center in the frequency direction and two adjacent OFDM segments
In the DM segment, two layers having different transmission characteristics can be simultaneously transmitted in a transmission layer. For each layer, it is possible to specify parameters such as a carrier modulation scheme, an inner code coding rate, and a time interleave length for each layer. It should be noted that for the OFDM segment in the center, frequency interleaving is performed only within the segment, and partial reception is enabled by a receiving device that receives the one-segment format. In the case of the three-segment format, the central portion is referred to as layer A, and two OFDM segments adjacent to the center are referred to as layer B. The one-segment format is only the A-layer.

The OFDM segment is defined so as to be interoperable with ISDB-Tw which is a digital terrestrial television broadcasting system. In ISDB-Tw, 13
One channel is composed of the OFDM segments, and the hierarchy is a three-layer configuration of A, B, and C.

As described above, the ISDB-Tn employs a hierarchical structure, and can specify a carrier modulation method for each layer.

Here, the segment is modulated by the differential modulation method (DQPSK) or synchronous modulation method (QPSK).
(K, 16QAM, 64QAM) and various transmission parameters required for demodulation, such as a format identification flag for identifying whether the segment is a 1-segment format or a 3-segment format. Is TM
It is transmitted by being included in the CC signal.

[0205] Since this TMCC signal is transmitted individually for each broadcast wave, it cannot be restored unless an actual broadcast wave is received. That is, unless the channel is actually switched and the broadcast wave is received, the transmission parameters included in the channel cannot be restored. However, for any transmission parameter,
Because there is a fixedly defined TMCC carrier,
Even if there is no information such as the segment format identification and the format identification flag in advance, the TMCC signal can be restored in principle. However, assuming an inferior transmission path condition, the demodulation operation may become unstable, or it may take time to restore the TMCC signal.

[0206] ISDB-Tn defines a concatenated transmission in which OFDM transmission signals transmitted to a plurality of channels are multiplexed in the frequency direction while maintaining orthogonality and transmitted. By performing such concatenated transmission, it is not necessary to provide a guard band between channels, so that the frequency band utilization efficiency is improved.

Here, when the segment receiving the signal is of the synchronous modulation system, the receiver can perform the waveform equalization process by estimating the transmission characteristics of the transmission path using the SP signal. Since the SP signal is inserted in
Normally, waveform equalization processing is performed using only the SP signal in the segment.

However, the segment and the upper adjacent segment (the adjacent segment on the high-frequency side) which were connected and transmitted.
Or lower adjacent segment (lower frequency side adjacent segment)
Exist, the upper and lower adjacent SP signals can be used during reception of the segment. When the SP signal of the upper adjacent segment or the lower adjacent segment is used as described above, the interpolation characteristics when estimating the channel characteristics are improved, and the channel characteristics can be more accurately estimated.

However, information indicating whether an upper adjacent segment exists, a lower adjacent segment exists, or whether they are a synchronous modulation system or a differential modulation system depends on whether a broadcast wave of the segment is actually received. You can't get it.

On the receiving side, when channel switching is performed between segments that have been connected and transmitted as described above, since various transmission parameters and control timings are synchronized between the segments, demodulation is performed again. Can be simplified, and the synchronization operation can be performed continuously between channels. Therefore, when the channel is switched between the channels combined by the link transmission, the channel change time is shortened.

[0211] However, whether or not the own segment and the segment to be switched to are connected and transmitted is determined as follows.
I do not know before switching.

Therefore, in the present invention, the connection transmission descriptor is newly defined as follows, and the terrestrial distribution system descriptor defined by ARIB STD-B10 is extended as follows.

FIG. 21 shows a connected transmission descriptor [connected_trans
mission_descriptor ()] shows the data structure.

The connected transmission descriptor [connected_transmission_
[descriptor ()]] is a descriptor capable of listing a transport stream to be connected and transmitted with the transport stream. This connection transmission descriptor [connect
ed_transmission_descriptor ()] is described in the TS loop of the NIT of the own network.

[Descriptor_tag] is a tag for identifying this descriptor from other identifiers. [descriptor_length] indicates the total number of bytes of the following loop (the loop of [for (i = 0; <N; i ++) {to}]). Loop [for (i = 0; <N; i ++)
{~}] Contains [original_network_id] and [transpo
rt_stream_id] is described. [original_network_id]
Indicates the network ID of the original network of the transport stream being connected and transmitted. [transpo
[rt_stream_id] is an ID for identifying a transport stream ID that is being connected and transmitted.

The terrestrial distribution system descriptor extended to FIG.
Shows the data structure of [terrestrial_delivery_system_descriptor ()].

The terrestrial distribution system descriptor [terrestrial_del]
ivery_system_descriptor ()] is a descriptor indicating the physical condition of the terrestrial transmission path. This terrestrial distribution system descriptor is described in the TS loop of NIT.

[Descriptor_tag] is a tag for identifying this descriptor from other identifiers. [descriptor_length] indicates the total number of bytes of data that follows. [area_code]
Indicates the service area in which the transport stream is transmitted. This [area_code] is extended to 16 bits as shown in FIG. [guard_interval] is
Indicates the guard interval of the transport stream.

[Transmission_mode] indicates the mode information of the transport stream.

[Segment_type] is 1-bit information for identifying the format of the one-segment system or the three-segment system. For example, as shown in FIG. 23, “0” is described in the case of the one-segment system, and “1” is described in the case of the three-segment system. This [segment_type]
Is new information not specified in ARIB STD B-10.

[Modulation_type_A] is 1-bit segment format identification information indicating whether the segment format of the A layer is a synchronous modulation system or a differential modulation system. For example, FIG.
As shown in (1), "0" is described if the A-layer is a synchronous modulation method, and "1" is described if the A-level is a differential modulation method. This [modulation_type_A] is new information that is not specified in ARIB STD B-10.

[Modulation_type_B] is 1-bit segment format identification information indicating whether the segment format of the layer B is a synchronous modulation system or a differential modulation system. For example, FIG.
As shown in (1), "0" is described if the layer B is a synchronous modulation method, and "1" is described if it is a differential modulation method. This [modulation_type_B] is new information that is not specified in ARIB STD B-10.

[Modulation_type_C] is 1-bit segment format identification information indicating whether the segment format of the C layer is a synchronous modulation system or a differential modulation system. For example, FIG.
As shown in (1), "0" is described if the C layer is a synchronous modulation method, and "1" is described if it is a differential modulation method. This [modulation_type_C] is new information that is not specified in ARIB STD B-10.

[Frequency] is an identifier indicating the frequency at which the transport stream is transmitted.

FIG. 24 shows an NIT in which the concatenated transmission descriptor and the extended terrestrial distribution system descriptor described above are described.
Shows the data structure of.

In the ISDB-Tn system, the CS
Like digital broadcasting and BS digital broadcasting, MPEG-
It is stipulated that NIT defined individually in 2 Systems is distributed. In other words, when constructing the ISDB-Tn system, the concept of a network is also introduced, and information about the broadcast signal itself, such as frequency information and transmission parameters related to transport streams belonging to the network, is transmitted by the distribution system descriptor. ing.

NIT (Network Information Table)
Is a table showing information on the physical configuration of the transport stream carried by the network and the characteristics of the network itself. The NIT includes an NIT indicating its own network information and an NIT indicating information of another network.

[Table_id] is an identifier indicating what this network information section indicates. When the table is the NIT of the own network, "0x4"
If the value “0” is the NIT of another network, the value “0x41” is described. The connection transmission descriptor described above will be included in the NIT for the own network.

[Section_syntax_indicator] is an identifier indicating a section syntax instruction, and its value is always "1".

[Reserved_future_use] is a reserved extended area in which some future information can be defined. [reserved] is a reserved area. [section_len
gth] begins with a CRC (Cy
clic Redundancy Check) specifies the number of bytes of the section up to the end of the section including the section. [network_id]
This is an ID for identifying the network indicated by the NIT. [version_number] indicates the version number of the sub-table.

[Current_next_indicator] indicates that the sub-table is the current sub-table when this value is “1”, and when “0”, the sub-table to be sent is not applied yet, An identifier indicating that the next sub-table is to be used.

[Section_number] indicates a section number. When the section is the first section in the sub-table, the value is “0x00”. The section number is incremented by “1” each time a section having the same [table_id] and [network_id] is added.

[Last_section_number] indicates the number of the last section of the subtable to which the section belongs, that is, the section having the maximum section number. [network_descriptor_length] indicates the total number of bytes of a loop of the following network descriptor (descripter ()). Inside the loop, the network descriptor desc
ripter () is described. [transport_stream_loop_lengt
h] indicates the total number of bytes of the transport stream loop that ends immediately before the first byte of the CRC.

[0234] The TS loop is described below. T
[Transport_stream_id] in the S loop is an ID for identifying this transport stream from other multiplexes in the distribution system. [original_network_id] is an ID indicating [network_id] of the original network.

[Transport_descriptor_length] is an identifier indicating the total number of bytes of the loop of the following transport descriptor (descripter ()). In this transport descriptor, a connected transmission descriptor [connected_transmi
ssion_descriptor ()] and the extended terrestrial distribution system descriptor [terrestrial_delivery_system_descriptor ()] will be described.

[CRC_32] indicates a CRC, and is such a value that the register output becomes "0" after processing the entire section.
This is an error code including an RC value.

As described above, by describing the connection transmission descriptor and the extended terrestrial distribution system descriptor in the NIT, the receiving apparatus can determine whether the currently received transport stream has an upper adjacent segment or a lower adjacent segment. Information on whether adjacent segments exist or whether they are synchronous modulation or differential modulation can be obtained.

When the channel is switched, it is possible to know whether or not the current segment and the switching destination segment are connected and transmitted.

[0239]

As described above, according to the digital broadcast transmission / reception system of the present invention, when providing a set of a plurality of services (programs) and / or transport streams related in some relation, the relation is simplified. It can be identified and used effectively.

[Brief description of the drawings]

FIG. 1 is a diagram for describing a digital broadcasting system to which the present invention is applied.

FIG. 2 is a diagram showing a data structure of a BAT.

FIG. 3 is a diagram showing a data structure of a service list descriptor.

FIG. 4 is a diagram showing a data structure of a bouquet name descriptor.

FIG. 5 is a diagram showing a data structure of a link descriptor.

FIG. 6 is a diagram illustrating a data structure of an extended link descriptor.

FIG. 7 is a diagram showing a data structure of a bouquet type descriptor.

FIG. 8 is a diagram illustrating an example of a bouquet type.

FIG. 9 is a diagram showing a data structure of an extended bouquet name descriptor.

FIG. 10 is a diagram illustrating a bit structure of a bouquet ID.

FIG. 11 is a block diagram of a receiving device used in the digital broadcasting system.

FIG. 12 is a diagram showing a terrestrial distribution system list.

FIG. 13 is a diagram showing a service list.

FIG. 14 is a diagram showing a bouquet list.

FIG. 15 is a diagram showing an external configuration of the receiving device.

FIG. 16 is a diagram showing a memory image storing information on affiliated stations in a service area.

FIG. 17 is a diagram showing a data structure of a simulcast descriptor.

FIG. 18 is a diagram showing a data structure of SDT.

FIG. 19 is a diagram showing a data structure of EIT.

FIG. 20 is a diagram illustrating a segment structure defined by ISDB-Tn.

FIG. 21 is a diagram illustrating a data structure of a connection transmission descriptor.

FIG. 22 is a diagram showing a data structure of an extended terrestrial distribution system descriptor.

FIG. 23 is a diagram illustrating data contents described in the terrestrial distribution system descriptor.

FIG. 24 is a diagram showing a data structure of NIT.

[Explanation of symbols]

1 digital broadcasting system, 10, 20, 30 broadcasting station, 10a, 20a, 30a service area, 100
Receiver

Continued on the front page F term (reference) 5C025 AA30 BA14 BA25 BA30 DA01 5C063 AA01 AB03 AB07 AC01 AC10 CA23 CA36 DA07 DA13 5K061 AA09 BB06 BB17 FF01

Claims (73)

[Claims] 1. A digital broadcast transmitting / receiving system to which a transport stream specified by MPEG-2 Systems is applied as a broadcast signal, wherein a plurality of associated services (programs), transport streams and / or networks are grouped as a bouquet, A digital broadcast transmission / reception system, wherein the content of the association is identified as a bouquet type. 2. The transport stream, wherein the service (program) grouped as the bouquet, information specifying a transport stream and / or a network, and the bouquet type are included in the transport stream and transmitted. Item 2. A digital broadcast transmitting / receiving system according to Item 1. 3. A BAT (Bouquet Association Table) included in the transport stream, describes the service (program) grouped by the bouquet, information for specifying the transport stream and / or the network, and the bouquet type. 2. The digital broadcast transmitting / receiving system according to claim 1, wherein: 4. The digital broadcast transmitting / receiving system according to claim 1, wherein the bouquet type is described as a descriptor and included in a transport stream. 5. The digital broadcast transmission / reception system according to claim 1, wherein the transport stream includes a bouquet type descriptor indicating a bouquet type. 6. The digital broadcast transmitting / receiving system according to claim 5, wherein a bouquet name indicating a name of each bouquet and the bouquet type are described in the bouquet type descriptor. 7. The digital broadcast transmitting / receiving system according to claim 1, wherein a bouquet ID for uniquely identifying each bouquet defined in the present system is assigned to the bouquet. 8. The digital broadcast transmitting / receiving system according to claim 7, wherein the bouquet ID describes bouquet identification information for uniquely identifying each bouquet. 9. The bouquet ID includes bouquet type information indicating the bouquet type and bouquet identification information for uniquely identifying each bouquet in the bouquet type. The digital broadcast transmitting / receiving system according to the above. 10. The bouquet ID includes media identification information for identifying broadcast media through which services (programs), transport streams, and networks are grouped as the bouquet, and each bouquet in the broadcast media. 8. The digital broadcast transmitting / receiving system according to claim 7, wherein the description includes a bouquet identification information for uniquely identifying the digital broadcast. 11. The bouquet ID includes media identification information for identifying broadcast media on which services (programs), transport streams, and networks are grouped as the bouquet, and the bouquet type in the broadcast media. 8. The digital broadcast transmission / reception system according to claim 7, wherein the bouquet type information uniquely identifies the bouquet and bouquet identification information uniquely identifying each bouquet in the bouquet type. 12. A digital broadcast transmission / reception system to which a transport stream defined by MPEG-2 Systems is applied as a broadcast signal, wherein a plurality of services related as a service substitution relationship when moving from an arbitrary service area to another service area. A digital broadcast transmission / reception system characterized in that information for specifying a service (program), a transport stream and / or a network is transmitted in the transport stream. 13. The NIT (Network Information Table) included in the transport stream contains the NI
13. The digital broadcast transmission / reception system according to claim 12, wherein a service (program), a transport stream, and / or a network associated as an alternative relationship with the transport stream to which T is applied are described. 14. The SI described in an SDT (Service Description Table) included in the transport stream.
13. The digital broadcast transmission / reception system according to claim 12, wherein a service (program), a transport stream, and / or a network associated as an alternative relationship with the service (program) to which T is applied are described. 15. An EIT (Event Information Table) included in a transport stream contains the EIT.
13. The digital broadcast transmission / reception system according to claim 12, wherein a service (program), a transport stream, and / or a network associated as an alternative relationship with the event to which is applied are described. 16. A digital broadcast transmitting / receiving system to which a transport stream specified by MPEG-2 Systems is applied as a broadcast signal, wherein a plurality of services related as a service substitution relationship when moving from an arbitrary service area to another service area. A digital broadcast transmission / reception system, wherein the services (programs), transport streams, and / or networks are grouped as a bouquet. 17. A service (program), transport stream and / or service (program) grouped as the bouquet.
17. The digital broadcast transmission / reception system according to claim 16, wherein information for specifying a network is included in the transport stream and transmitted. 18. A bouquet type indicating contents of association of services (programs), transport streams and / or networks grouped as a bouquet,
17. The digital broadcast transmission / reception system according to claim 16, wherein the digital broadcast transmission / reception system is defined as a service substitution relationship when a user moves from an arbitrary service area to another service area. 19. The service (program), transport stream and / or grouped as a bouquet.
19. The digital broadcast transmission / reception system according to claim 18, wherein information for specifying a network and the bouquet type defined as an alternative relationship are included in the transport stream and transmitted. 20. A BAT (Bouquet Association Table) included in a transport stream is defined as a service (program) grouped by the bouquet, information specifying a transport stream and / or a network, and an alternative relationship. 19. The digital broadcast transmitting / receiving system according to claim 18, wherein the bouquet type is described. 21. The digital broadcast transmitting / receiving system according to claim 18, wherein the bouquet type defined as the substitution relationship is described as a descriptor and included in a transport stream. 22. The digital broadcast transmission / reception system according to claim 18, wherein said transport stream includes a bouquet type descriptor indicating a bouquet type defined as an alternative relationship. 23. The digital broadcast transmission / reception system according to claim 22, wherein a bouquet name indicating a name of each bouquet and the bouquet type are described in the bouquet type descriptor. 24. The digital broadcast transmitting / receiving system according to claim 18, wherein the bouquet is provided with a bouquet ID for uniquely identifying each bouquet defined in the present system. 25. The digital broadcast transmitting / receiving system according to claim 24, wherein the bouquet ID describes bouquet identification information for uniquely identifying each bouquet. 26. The bouquet ID includes bouquet type information indicating the bouquet type and bouquet identification information for uniquely identifying each bouquet in the bouquet type. The digital broadcast transmitting / receiving system according to the above. 27. The bouquet ID includes media identification information for identifying a broadcast medium on which a service (program) and a transport stream are grouped as the bouquet, and each bouquet in the broadcast medium is uniquely identified. 25. The digital broadcast transmission / reception system according to claim 24, further comprising a description including bouquet identification information for identification. 28. The bouquet ID includes media identification information for identifying a broadcast medium on which a service (program) and a transport stream grouped as the bouquet are broadcast, and a unique bouquet type within the broadcast medium. 25. The digital broadcast transmission / reception system according to claim 24, wherein the bouquet type information identifies the bouquet and the bouquet identification information uniquely identifying each bouquet within the bouquet type. 29. A digital broadcast transmission / reception system using a transport stream defined by MPEG-2 Systems as a broadcast signal, wherein a plurality of services associated with a broadcast signal provider are related to affiliated stations forming an affiliated net. A digital broadcast transmission / reception system characterized by grouping (program), a transport stream and / or a network as a bouquet. 30. Services (programs), transport streams and / or services grouped as a bouquet.
30. The digital broadcast transmission / reception system according to claim 29, wherein information for specifying a network is included in the transport stream and transmitted. 31. A bouquet type indicating the contents of association of services (programs), transport streams and / or networks grouped as a bouquet,
30. The digital broadcast transmission / reception system according to claim 29, wherein a broadcast signal provider defines the relationship as affiliated stations forming an affiliated network. 32. Services (programs), transport streams and / or services grouped as a bouquet.
32. The transmission stream, wherein information for specifying a network and the bouquet type defined as affiliated station relation are included in the transport stream and transmitted.
The digital broadcast transmitting / receiving system according to the above. 33. A BAT (Bouquet Association Table) included in a transport stream, a service (program) grouped by the bouquet, information specifying a transport stream and / or a network, and a relation between affiliated stations. 32. The digital broadcast transmitting / receiving system according to claim 31, wherein the bouquet type is described. 34. The digital broadcast transmission / reception system according to claim 31, wherein the bouquet type defined as affiliated station relation is described as a descriptor and included in a transport stream. 35. The digital broadcast transmitting / receiving system according to claim 31, wherein the transport stream includes a bouquet type descriptor indicating a bouquet type defined as affiliated station relation. 36. The digital broadcast transmitting / receiving system according to claim 35, wherein the bouquet type descriptor describes the bouquet name indicating the name of each bouquet and the bouquet type. 37. The digital broadcast transmitting / receiving system according to claim 31, wherein a bouquet ID for uniquely identifying each bouquet defined in the present system is assigned to the bouquet. 38. The digital broadcast transmission / reception system according to claim 37, wherein the bouquet ID describes bouquet identification information for uniquely identifying each bouquet. 39. The bouquet ID includes bouquet type information indicating the bouquet type and bouquet identification information for uniquely identifying each bouquet in the bouquet type. The digital broadcast transmitting / receiving system according to the above. 40. The bouquet ID includes media identification information for identifying a broadcast medium on which a service (program) and a transport stream grouped as the bouquet are broadcast, and each bouquet in the broadcast medium is uniquely identified. 38. The digital broadcast transmitting / receiving system according to claim 37, further comprising a description including bouquet identification information for identification. 41. The bouquet ID includes media identification information for identifying a broadcast medium on which a service (program) and a transport stream grouped as the bouquet are broadcast, and a unique bouquet type within the broadcast medium. 38. The digital broadcast transmission / reception system according to claim 37, further comprising a bouquet type information for identifying the bouquet and a bouquet identification information for uniquely identifying each bouquet within the bouquet type. 42. An OFDM (Orthogonal Frequency Division Multiple Multiple) in a digital broadcast transmitting / receiving system to which a transport stream specified in MPEG-2 Systems is applied as a broadcast signal.
x) A digital broadcast transmission / reception system characterized by grouping a plurality of services (programs), transport streams, and / or networks associated with each other in a linked transmission relationship in which a linked transmission is performed in a scheme as a bouquet. 43. Services (programs), transport streams and / or services grouped as a bouquet.
43. The digital broadcast transmission / reception system according to claim 42, wherein information for specifying a network is transmitted while being included in the transport stream. 44. A bouquet type indicating the contents of association of services (programs), transport streams and / or networks grouped as a bouquet,
43. The digital broadcast transmission / reception system according to claim 42, wherein the connection is defined as a connection transmission relationship in which connection transmission is performed in the OFDM system. 45. Services (programs), transport streams and / or services grouped as a bouquet.
Or transmitting information including information for specifying a network and the bouquet type defined as a connection transmission relationship in the transport stream.
4. The digital broadcast transmitting and receiving system according to 4. 46. A BAT (Bouquet Association Table) included in a transport stream, a service (program) grouped by the bouquet, information specifying a transport stream and / or a network, and a connection transmission relationship defined. The digital broadcast transmitting / receiving system according to claim 44, wherein the bouquet type is described. 47. The digital broadcast transmission / reception system according to claim 44, wherein the bouquet type defined as a connection transmission relationship is described as a descriptor and included in a transport stream. 48. The digital broadcast transmitting / receiving system according to claim 44, wherein the transport stream includes a bouquet type descriptor indicating a bouquet type defined as a connection transmission relationship. 49. The digital broadcast transmitting / receiving system according to claim 48, wherein a bouquet name indicating a name of each bouquet and the bouquet type are described in the bouquet type descriptor. 50. The digital broadcast transmitting / receiving system according to claim 44, wherein the bouquet is provided with a bouquet ID for uniquely identifying each bouquet defined in the present system. 51. The digital broadcast transmission / reception system according to claim 50, wherein the bouquet ID describes bouquet identification information for uniquely identifying each bouquet. 52. The bouquet ID includes bouquet type information indicating the bouquet type and bouquet identification information for uniquely identifying each bouquet in the bouquet type. The digital broadcast transmitting / receiving system according to the above. 53. The bouquet ID includes media identification information for identifying a broadcast medium on which a service (program) and a transport stream are grouped as the bouquet, and each bouquet in the broadcast medium is uniquely identified. 51. The digital broadcast transmitting / receiving system according to claim 50, wherein the description includes the bouquet identification information for identification. 54. The bouquet ID includes media identification information for identifying a broadcast medium on which a service (program) and a transport stream grouped as the bouquet are broadcast, and a unique bouquet type within the broadcast medium. 51. The digital broadcast transmission / reception system according to claim 50, wherein the bouquet type information identifying the bouquet and the bouquet identification information uniquely identifying each bouquet within the bouquet type are described. 55. A digital broadcast transmission / reception system to which a transport stream defined by MPEG-2 Systems is applied as a broadcast signal, wherein a plurality of services (programs) related to a simulcast broadcast that performs the same broadcast, A digital broadcast transmission / reception system, wherein transport streams and / or networks are grouped as a bouquet. 56. Services (programs), transport streams and / or services grouped as a bouquet
56. The digital broadcast transmission / reception system according to claim 55, wherein information for specifying a network is transmitted while being included in the transport stream. 57. A bouquet type indicating the contents of association of services (programs), transport streams and / or networks grouped as a bouquet,
56. The digital broadcast transmission / reception system according to claim 55, wherein the system is defined as performing the same broadcast. 58. A service (program), a transport stream and / or a service (program) grouped as the bouquet.
58. The digital broadcast transmission / reception system according to claim 57, wherein information for specifying a network and the bouquet type defined as simulcast-related are included in the transport stream and transmitted. 59. A BAT (Bouquet Association Table) included in a transport stream, a service (program) grouped by the bouquet, information specifying a transport stream and / or a network, and a definition related to simultaneous broadcasting. 58. The digital broadcast transmitting / receiving system according to claim 57, wherein the bouquet type is described. 60. The digital broadcast transmitting / receiving system according to claim 57, wherein the bouquet type defined as simulcast related is described as a descriptor and included in a transport stream. 61. The digital broadcast transmission / reception system according to claim 57, wherein the transport stream includes a bouquet type descriptor indicating a bouquet type defined as a simulcast relationship. 62. The digital broadcast transmitting / receiving system according to claim 61, wherein a bouquet name indicating a name of each bouquet and the bouquet type are described in the bouquet type descriptor. 63. The digital broadcast transmitting / receiving system according to claim 57, wherein the bouquet is provided with a bouquet ID for uniquely identifying each bouquet defined in the present system. 64. The digital broadcast transmission / reception system according to claim 63, wherein the bouquet ID describes bouquet identification information for uniquely identifying each bouquet. 65. The bouquet ID includes bouquet type information indicating the bouquet type and bouquet identification information for uniquely identifying each bouquet in the bouquet type. The digital broadcast transmitting / receiving system according to the above. 66. The bouquet ID includes media identification information for identifying a broadcast medium on which a service (program) and a transport stream are grouped as the bouquet, and each bouquet in the broadcast medium is uniquely identified. 64. The digital broadcast transmission / reception system according to claim 63, wherein the description includes the bouquet identification information for identification. 67. The bouquet ID includes media identification information for identifying a broadcast medium on which a service (program) and a transport stream grouped as the bouquet are broadcast, and a unique bouquet type within the broadcast medium. 64. The digital broadcast transmitting / receiving system according to claim 63, wherein the bouquet type information for identifying the bouquet and the bouquet identification information for uniquely identifying each bouquet within the bouquet type are described. 68. A digital broadcast receiving apparatus for receiving a digital broadcast to which an MPEG-2 Systems transport stream is applied as a broadcast signal, wherein a plurality of associated services (programs), transport streams, and / or networks are grouped as a bouquet. And receives a transport stream including control information identified as the bouquet type with the content of the association, and based on the control information, a plurality of services (programs), transport streams, and And / or manages the network for each bouquet type and, based on the control information being managed, sets the received service (program), transport stream or network to the content of the association indicated by the bouquet type. Flip and digital broadcast receiving apparatus and performs switching. 69. A digital broadcast receiving apparatus which receives a digital broadcast to which an MPEG-2 Systems transport stream is applied as a broadcast signal, wherein the digital broadcast receiver is associated as a service substitution relationship when moving from an arbitrary service area to another service area. Receiving a plurality of services (programs), a transport stream and / or a transport stream including control information indicating a network, and based on the control information, the received service (program) and A plurality of associated services (programs), transport streams and / or networks are managed, and the received services (programs), transport streams or networks are transferred to other -Bis (program), the digital broadcast receiving apparatus and performs switching in the transport stream or a network. 70. A digital broadcast receiving apparatus which receives a digital broadcast to which an MPEG-2 Systems transport stream is applied as a broadcast signal, wherein the digital broadcast receiver is associated as a service substitution relationship when moving from an arbitrary service area to another service area. A plurality of services (programs), transport streams and / or networks are grouped as a bouquet, and control information indicating the plurality of services (programs), transport streams and / or networks grouped as the bouquet is included. Receiving a transport stream, and, based on the control information, a plurality of services (programs), transport streams, and / or networks associated with the service (program) being received as the alternative relationship. Network, and switches a received service (program), transport stream, or network to another service (program), transport stream, or network based on the managed control information. Digital broadcast receiver. 71. A digital broadcast receiving apparatus for receiving a digital broadcast to which an MPEG-2 Systems transport stream is applied as a broadcast signal, wherein a plurality of services in which a broadcast signal provider is associated as affiliated station relations constituting an affiliated net. (Programs), transport streams and / or networks are grouped as bouquets, and a plurality of services (programs) grouped as bouquets, transport streams and / or transport streams containing control information indicating networks are included. Based on the received control information, manages and manages a plurality of services (programs), transport streams and / or networks associated with the received service (program) as the affiliated station relationship. Based on the control information, the reception service (program), a transport stream or a network, other services (programs), the digital broadcast receiving apparatus and performs switching in the transport stream or a network. 72. A digital broadcast receiving apparatus for receiving a digital broadcast to which an MPEG-2 Systems transport stream is applied as a broadcast signal, comprising: an OFDM (Orthogonal Frequency Division Multiplex).
x) A plurality of services (programs), transport streams and / or networks associated as a concatenated transmission relationship performing a concatenated transmission in the scheme, grouped as a bouquet, and a plurality of services (programs) grouped as the bouquet Receiving a transport stream including control information indicating a transport stream and / or a network, and, based on the control information, a plurality of services associated with the service (program) being received as the connection transmission relationship. (Programs), transport streams and / or networks, and manages received services (programs), transport streams or networks based on the control information being managed by other services (programs), Digital broadcast receiving apparatus and performs switching to transport streams or network. 73. A digital broadcast receiving apparatus which receives a digital broadcast to which an MPEG-2 Systems transport stream is applied as a broadcast signal, wherein a plurality of services (programs) related as a simulcast related to the same broadcast are provided. , Grouping the transport stream and / or network as a bouquet, receiving a transport stream including control information indicating a plurality of services (programs), the transport stream and / or the network grouped as the bouquet, Based on the control information, manages and manages a plurality of services (programs), transport streams, and / or networks associated with the received service (program) in the simulcast relationship. Based on the control information, the reception service (program), a transport stream or a network, other services (programs), the digital broadcast receiving apparatus and performs switching in the transport stream or a network.