JP2003218816A - Digital broadcast system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To rapidly record contents in a broadcast system for realizing interactivity by repeatedly transmitting one set of data. <P>SOLUTION: The digital broadcast system separates an image corresponding table from a stream in an arbitrary sequence, and repeats a process for storing image data to be identified by the table in an acquired sequence until a storage of all of the one set of image data is completed. Thus, a storage process is possible in a short time for the image data broadcasted for the purpose of efficiently regenerating the data by a receiver having no storage function. Further, after the completion of the storage, the data can be always viewed and listened. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital broadcasting system, and more particularly to a system capable of interactively changing the content of content in response to a viewer's operation.

[0002]

[Prior Art] 0. Outline of Satellite Broadcasting System First, an outline of the satellite broadcasting system will be described.

0.1. State of Radio Wave Transmission in Satellite Broadcasting FIG. 1 schematically shows the state of radio wave transmission in satellite broadcasting. The radio wave from the ground station 2 is transmitted to the ground via the broadcasting satellite 4. A plurality of transport streams TS1, TS2, TS3 are transmitted from the broadcasting satellite 4. Each transport stream (MPEG-2)
Distinguished by frequency, plane of polarization, etc.

The transport stream TS1 includes a plurality of services (corresponding to terrestrial broadcasting channels) SV.
11, SV12, SV13, and SV14 are packetized and multiplexed by time division. Similarly, services SV21 and SV2 are added to the transport stream TS2.
2, SV23, SV24 are multiplexed, and services SV31, SV32, S are added to the transport stream TS3.
V33 and SV34 are multiplexed. In addition to the image data and audio data of each service, control data for indicating program information, control data for indicating the current time, control data necessary for packetization, etc. are also transmitted to each transport stream. There is. Although only three transport streams are shown in FIG. 1, more transport streams are actually sent. Further, in FIG. 1, four services are multiplexed for each transport stream,
In reality more services are multiplexed.

0.2. Configuration of Transmission Device Each transport stream is generated and transmitted by the transmission device 1, as shown in FIG. Although only the transport stream TS1 is shown in the figure, the other transport streams TS2 and TS3 are similarly generated.

Services SV11, SV12, SV13,
SV14 image / sound data ES11, ES12, ES
13, ES14 are given to the transmitter 1. The transmission device 1 uses the image / audio data ES11, ES12,
ES13 and ES14 are packetized and multiplexed. The transmitter 1 also generates control data for packet multiplexing. The control data for packet multiplexing is attached in order to correctly identify the image / audio data of a plurality of services packetized in a time division manner. The image / audio data (content) that has been packetized and multiplexed together with the control data is transmitted as a transport stream.

0.3. Structure of Transport Stream As shown in FIG. 3, the transport stream TS1 generated by the transmitting apparatus shown in FIG.
1 video data ES (V), audio data ES (A)
1, video data ES (V) 2 of service SV12, audio data ES (A) 2, video data E of service SV13
S (V) 3, voice data ES (A) 3, service SV1
4 video data ES (V) 4, audio data ES (A) 4
Are multiplexed.

Further, control data NIT, PAT, PMT1, PMT2, PMT3, P for packet multiplexing.
MT4 is also multiplexed. With these control data,
Multiplexed services SV11, SV12, SV1
3. SV14 video / audio data can be separated.

Packetization is performed as shown by the vertical line 18a in FIG. That is, control data NIT, PAT, P
MT, EIT, TDT, ECM, video data ES
(V) and the voice data ES (A) are packetized in this order. When the packetization up to the voice data ES (A) 3 is completed, the packetization up to the control data NIT is repeated again (see the vertical line 18b).

FIG. 4 shows the basic structure of packetized data. Both the control data and the video / audio data are packets having a data structure as shown in FIG. A packet ID (PID) is attached to the beginning of the packetized data. The packet ID is a code uniquely assigned to each packet for identifying each packet. The content data is packetized target data (control data,
Video / audio data, etc.).

FIG. 5 shows the transport stream TS1.
Control data PAT, PMT1, PMT2, P in
Video / audio data ES of MT3, PMT4 and each service
Shows the relationship with. For example, the encrypted video / audio data 500 of the service SV12 is packetized into P
ID502 is attached. In the figure, one packet is schematically shown, but the video / audio data 5
00 is time-divided and sent as a large number of packets.

Video / audio data 50 of the service SV12
The packet ID of 0 is described in the control data PMT2. Therefore, the packet ID of the video / audio data 500 of the service SV12 can be known by obtaining the content of the control data PMT2. This control data PM
T2 is also packetized and given a PID 512. Although it is schematically shown as one packet in the figure, the control data PMT2 is also time-divisionally sent as a number of packets.

The packet ID of the control data PMT2 is described in the control data PAT. Therefore, by obtaining the contents of the control data PAT, P of the service SV12
The packet ID of MT2 can be known. This control data PAT is also packetized and given a PID 522. In the control data PAT, PMT1 of services SV11, SV12, SV13, SV14 multiplexed in this transport stream TS1,
The packet IDs of PMT2, PMT3, and PMT4 are described.

In the transport stream, the control data and the video / audio data which are packetized and related as described above are sent. Therefore, in order to identify the service multiplexed in the transport stream, it is necessary to first obtain the control data PAT. Therefore, the packet ID of the control data PAT is a predetermined value (0000 in hexadecimal notation, hereinafter expressed as 0x0000)
It is fixed to.

Incidentally, each transport stream TS
1, TS2, TS3 transmission specifications (frequency, etc.), and
What kind of service is multiplexed in each is described in the control data NIT (see FIG. 6).
Therefore, by obtaining the content of the control data NIT, it is possible to know in which transport stream a specific service is multiplexed. The packet ID of this control data NIT is described in the control data PAT.

0.4. Configuration of Receiving Device FIG. 7 shows an outline of the receiving device. The tuner 22 selects the transport stream, and the transport decoder 26 separates the video / audio data ES regarding the desired service.

The MPU 28 sets the packet ID of the video / audio data ES of the desired service in the transport decoder 26. As a result, the transport decoder 26 makes the video / audio data ES of the service concerned.
Is output. Further, when the packet ID of the control data is set in the transport decoder 26, the separated control data is given to the MPU 28.

The operation when the command to switch to the service SV12 of the transport stream TS1 is given to the MPU 28 assuming that the service SV33 of the transport stream TS3 is currently received will be described below. First, the MPU 28 controls the transport decoder (that is, the packet I of the control data NIT).
Set D) and take in NIT. From the description of this NIT, it is known that the service SV12 desired to be received is multiplexed in the transport stream TS1 (see FIG. 6).

Next, the tuner 8 is controlled to receive the transport stream TS1. Further, the transport decoder 26 is controlled to acquire the PAT and PMT2, and the video data ES of the desired service SV12 is acquired.
(V) 2, the packet ID of the audio data ES (A) 2 is obtained (see arrows α and β in FIG. 5).

Next, these packet IDs are set in the transport decoder 26, and the desired service SV12 is set.
The video data ES (V) 2 and the audio data ES (A) 2 are output from the transport decoder 26. As described above, the services to be received are switched.

[0021]

However, in the conventional broadcasting system as described above, it is not possible to interactively change the program content on the receiving device side by the operation of the viewer.
For example, in a program that broadcasts "weather forecast", it is not possible to display the forecast of a specific area or switch to the weekly forecast screen by the operation of the viewer.

In view of the above, the present invention makes it possible to interactively operate by an operator's operation as if interactively bidirectionally communicating using video information or the like transmitted from a broadcasting station in one direction. An object is to provide a digital broadcasting system capable of changing program contents. Further, it is an object of the present invention to speed up the processing on the receiving device side in such a digital broadcasting system and record a program having interactivity.

[0023]

[Means for Solving the Problems and Effects of the Invention] (1) The broadcasting system of the present invention broadcasts a set of linked content elements by a transmitter, and the receiver transmits one set of contents. A digital broadcasting system capable of selecting and outputting a content element from among the content elements, and switching the content element to be selected according to an operation input of a viewer, comprising a transmitting device and a receiving device described below. There is.

The transmitting device sets a plurality of content elements as one set, repeatedly transmits the content element set, and outputs one or more navigation control data for controlling which of the plurality of content elements is output. The receiving device is a device that repeatedly transmits data, and a receiving unit that receives transmitted data, an operation receiving unit that receives an operation of an operator, and, in the receiving mode, a navigation device based on an operation received by the operation receiving unit. The content element to be restored next is determined according to the control data, and the content element to be restored next is selected from the repeatedly sent content element sets and is restored and output. Restore and record a set of navigation control data and a set of content elements, and enter playback mode. Te, based on the operation received by the operation receiving unit, according to the recorded navigation control data, and a restoring unit for selecting and outputting content elements from the recorded set of content elements.

Setting a plurality of content elements as one set, repeatedly transmitting the content element set, and repeatedly transmitting one or more navigation control data for controlling which of the plurality of content elements is output. Thus, the receiving side can select and output the content element based on the navigation control data. Furthermore, by recording one set of content elements and one set of navigation data, it is possible to record and reproduce service content with interactivity while suppressing the capacity required for recording.

(2) The digital broadcasting system of the present invention is
The transmitting device transmits the content element set as an element stream to which a continuous series of information is added, and extracts the extraction control data for extracting each content element from the element stream based on the series of information. Corresponding to the element, it repeatedly transmits, the restoration unit of the receiving device,
In the reception mode and the recording mode, the target content element is extracted from the element stream based on the series information of the extraction control data.

Therefore, the element stream can be used to transmit a content element. Also, on the receiving side, the content element can be extracted from the element stream based on the extraction control data.

(3) The digital broadcasting system of the present invention is
Using time information as a series of information, the content element is based on the time information in the element stream,
It is characterized in that it is moving image data or audio data cut out according to the start time and the end time.

Therefore, it is possible to extract moving image data or audio data by using the time information multiplexed in the element stream as a series of information for extracting the content element.

(4) The digital broadcasting system of the present invention is
Time information is used as the series of information, and the content element is characterized by being still image data cut out based on the time information in the element stream.

Therefore, the still image data can be extracted by using the time information multiplexed in the element stream as a series of information for extracting the content element.

(5) The digital broadcasting system of the present invention is
The transmission device transmits a content element list indicating a list of content elements included in the content element set in association with the content element set, and the restoration unit of the reception device in the recording mode based on the content element list, It is characterized by determining whether or not all the content elements included in the content element set have been recorded.

Therefore, it becomes easy for the receiving device to judge whether or not all the content elements have been recorded.

(6) The digital broadcasting system of the present invention is
The transmitting device transmits a navigation list indicating a list of navigation control data included in the navigation control data set in association with the navigation control data set, and the restoring unit of the receiving device, in the recording mode, based on the navigation list. It is characterized by determining whether or not all navigation control data included in the navigation data set has been recorded.

Therefore, it becomes easy for the receiving device to judge whether or not all navigation data has been recorded.

(7) The digital broadcasting system of the present invention is
The transmitter transmits the set of content elements or the set of extraction control data with an expiration date, and the restoration unit of the receiver associates the set expiration date with the set of content elements in the recording mode. Recorded in playback mode,
When the expiration date has passed, the set of content elements is not output, or is output together with information indicating that the expiration date has passed.

Therefore, when the recorded material is reproduced, the reproduction content of the entire set of content elements can be controlled based on the expiration date intended by the broadcasting side.

(8) The digital broadcasting system of the present invention is
The transmitting device may add to the content element or extraction control data,
The restoration unit of the receiving apparatus records the content element in association with the expiration date in the recording mode, and records the content element in the reproduction mode. Is not output or is output together with information indicating that the expiration date has passed.

Therefore, when the recorded material is reproduced, the reproduction content of each content element can be controlled based on the expiration date intended by the broadcasting side.

(9) The digital broadcasting system of the present invention is
The expiration date is characterized by being included in the content element list or the navigation list and transmitted.

(16) The digital broadcast receiver of this invention is
In the recording mode, the restoration unit does not specify which extraction control data to extract, extracts all extraction control data, and sequentially records the content elements in the order in which the extraction control data is acquired. I am trying.

Therefore, as compared with the case where the fetch control data is sequentially designated and fetched, all the content elements can be fetched more quickly. That is, the time required for the recording process can be shortened.

(17) The digital broadcast receiver of the present invention comprises:
In the recording mode, the restoration unit does not specify which navigation control data to retrieve, retrieves all the navigation control data, and sequentially records the navigation control data in the order in which the navigation control data was obtained. It has a feature.

Therefore, as compared with the case where the navigation control data are sequentially designated and taken out, all the navigation control data can be taken out quickly. That is, the time required for the recording process can be shortened.

(18) The digital broadcast receiver of this invention is
In the recording mode, the recovery unit does not specify which extraction control data to extract while there is a large amount of unrecorded extraction control data remaining, and extracts all extraction control data as a target. The extraction control data is sequentially recorded in the order of acquisition, and when the unrecorded extraction control data is low, the unrecorded extraction control data is designated and extracted, and recording is performed.

When the unrecorded take-out control data becomes small, the unrecorded take-out control data is designated and taken out, thereby avoiding the waste of acquiring already recorded take-out control data. That is, the time required for the recording process can be shortened.

(19) The digital broadcast receiver of this invention is
In the recording mode, the restoration unit does not specify which navigation control data to retrieve while a large amount of unrecorded navigation control data remains, and retrieves all the navigation control data as a target. The navigation control data is sequentially recorded in the order of acquisition, and when the unrecorded navigation control data becomes small, the unrecorded navigation control data is designated and taken out and recorded.

When the unrecorded navigation control data becomes small, the unrecorded navigation control data can be taken out by designating the unrecorded take-out control data, thereby avoiding the waste of acquiring the already recorded navigation control data. That is, the time required for the recording process can be shortened.

(22) The digital broadcast recording apparatus of the present invention comprises
What is claimed is: 1. A digital broadcast recording device for recording a digital broadcast capable of switching a content element to be selected according to an operation input of a viewer, comprising a receiving unit for receiving transmitted data, and a continuous series. Based on the extraction control data that identifies the content element to which information is attached based on the series of information, the target content element is extracted from the element stream, and a set of content elements is restored and recorded. In addition, a recording unit for recording a set of navigation control data is provided.

By recording as one set of content elements and one set of navigation control data, interactive service contents can be recorded and reproduced while suppressing the capacity required for recording. Further, the recorded contents can be easily reused by a computer or the like.

(27) The digital broadcasting system of the present invention is
Broadcast by the transmitter a set of content elements linked together by the description of the content elements themselves,
The receiving device side is a digital broadcasting system capable of selecting and outputting a content element from a set of transmitted content elements and switching the content element to be selected according to the operation input of the viewer. The following transmitter and receiver are provided.

The transmitting device sets a plurality of content elements as one set and repeatedly transmits the content element set. The receiving device receives the transmitted data and the operation of the operator. In the reception mode, in the reception mode, based on the operation received by the operation reception unit, the content element to be restored next is determined according to the link information in the content element, and the content element set repeatedly sent. The content element to be restored next is selected and restored and output. In the recording mode, a set of content elements is restored and recorded. In the playback mode, the operation accepted by the operation accepting unit Based on the link information in the recorded content element, the next out of the set of recorded content elements It includes a restoring unit for selecting and outputting should do content elements, a.

By transmitting a set of content elements linked to each other by the description of the content element itself, the receiving side can select and output the content element based on the description of the content element itself. Furthermore, by recording one set of content elements, it is possible to record and reproduce service content with interactivity while suppressing the capacity required for recording.

(29) The digital broadcasting system of the present invention is
A set of linked content elements is broadcast by the transmitter, and the receiver selects and outputs the content element from the set of transmitted content elements, and selects it according to the operation input by the viewer. A digital broadcasting system capable of switching content elements to be used, which includes a transmitting device and a receiving device described below.

The transmission device sets a plurality of content elements as one set, repeatedly transmits the content element set, and repeatedly transmits navigation control data for controlling which of the plurality of content elements is output. The receiving device receives the transmitted data, an operation accepting unit that accepts an operation by an operator, and an operation accepting unit that accepts an operation, and then receives the next operation according to the navigation control data. A content element to be restored to, a content element to be restored next from the content element set that is repeatedly sent, and a restore section that restores and outputs the content element,
The restoration unit performs a process of restoring and recording another content element in parallel with a process of selecting and restoring a desired content element determined based on an operation input of the operator, and performing an operation of the operator. If the desired content element determined based on the input is already recorded, the content element that is restored in advance and recorded is output.

A plurality of content elements are set as one set, and the content element set is repeatedly transmitted, and at least one navigation control data for controlling which of the plurality of content elements is output is repeatedly transmitted. Thus, the receiving side can select and output the content element based on the navigation control data. Further, in parallel with the restoration / output of the content element to be output, another content element is restored / recorded in advance, and when the other content element is output, the recorded one is used. Thereby, the switching time of the content element can be shortened and the reaction to the viewer's operation can be accelerated. Furthermore, when the recording capacity of the receiving device is small, the content element repeatedly transmitted can be used, and when the storage capacity is large, the recorded content element can be used. That is,
It is possible to realize compatible interactive broadcasting regardless of the recording capacity of the receiving device, and further to improve the processing speed according to the recording capacity of the receiving device.

(35) The digital broadcasting system of the present invention is
The transmission device associates the entire set of content elements or individual content elements with an expiration date or version and transmits the set, and the restoration unit of the reception device sets the entire set of content elements or individual content elements to the expiration date or version. It is characterized in that the versions are recorded in association with each other and the optimization process is performed based on the expiration date or the version information.

Therefore, it is possible to prevent the output of old information or obtain the latest information based on the expiration date and version of the recorded content element.

(36) The digital broadcasting system of the present invention is
The optimization process performed by the restoration unit of the receiving device is performed when the desired content element determined based on the operation input of the operator has already been recorded, and when the expiration date of the content element has passed or the version. If the content is out of date, the recorded content element is not output or is output together with information indicating that the expiration date has passed.

Therefore, reproduction of old information can be prevented. It can also indicate that the information being reproduced is old.

(37) The digital broadcasting system of the present invention is
The optimization process performed by the restoration unit of the receiving device is performed when the desired content element determined based on the operation input of the operator has already been recorded, and when the expiration date of the content element has passed or the version. If the content is out of date, the content elements already recorded are not output, and a desired content element is selected from the set of transmitted content elements, restored, and output. .

Therefore, even when the recorded information is reproduced, the latest information can be output without outputting the old information.

(38) The digital broadcasting system of the present invention is
The optimization process performed by the restoration unit of the receiving device compares the version transmitted in association with the content element with the already recorded version, or compares the current date and time with the already recorded expiration date. When the expiration date has passed or the version is old, the content element transmitted is restored and recorded again.

Therefore, the recorded content element can be updated to the latest one. The version and expiration date may be compared on a regular basis,
It may be performed when the content element set or the content element is selected.

(39) The digital broadcasting system of the present invention is
The transmitting device transmits information on whether or not to transmit a new content element set or a content element having the next version or the next expiration date in association with the entire content element set or individual content elements. It is characterized by doing.

Therefore, the receiving device side can easily determine whether or not a new content element is transmitted.

(59) The digital broadcasting system of the present invention is
Broadcast by the transmitter a set of content elements linked together by the description of the content elements themselves,
The receiving device side is a digital broadcasting system capable of selecting and outputting a content element from a set of transmitted content elements and switching the content element to be selected according to the operation input of the viewer. The following transmitter and receiver are provided.

The transmission device sets a plurality of content elements as one set and repeatedly transmits the content element set. The reception device receives the transmitted data, and the operation of the operator. Based on the operation acceptance unit that accepts, and the operation accepted by the operation acceptance unit, the content element to be restored next is determined according to the link information in the content element, and from the content element set that is repeatedly sent, And a restoring unit that restores and outputs a content element to be restored, and the restoring unit operates in parallel with a process of selecting and restoring a desired content element determined based on an operation input of the operator. Then, the process of restoring and recording the other content elements is performed, and the desired content element determined based on the operation input of the operator has already been recorded. If that outputs a pre-recovered recorded content elements.

By transmitting a set of content elements linked to each other by the description of the content element itself, the receiving side can select and output the content element based on the description of the content element itself. Further, in parallel with the restoration / output of the content element to be output, another content element is restored / recorded in advance, and when the other content element is output, the recorded one is used. Thereby, the switching time of the content element can be shortened and the reaction to the viewer's operation can be accelerated. Furthermore, when the recording capacity of the receiving device is small, the content element repeatedly transmitted can be used, and when the storage capacity is large, the recorded content element can be used. That is, it is possible to realize compatible interactive broadcasting regardless of the recording capacity of the receiving device, and further to improve the processing speed according to the recording capacity of the receiving device.

(61) In the broadcasting system of the present invention, the transmitting device provides the recording process information, which is the basis for determining whether or not the recording process is performed on the receiving device side, to the entire set of content elements.
It is characterized in that it is transmitted in association with individual content elements, a set of navigation control data, or individual navigation control data. Therefore, on the side of the receiving device, it is possible to determine whether or not to perform recording, based on this recording processing information. "Recording process information"
As the information, it is possible to use recording necessity information indicating whether or not recording is necessary, expiration date information indicating the expiration date of the information, version upgrade frequency information indicating the upgrade frequency, and the like.

The receiving apparatus according to the present invention also has the following configurations and characteristics.

1. A digital broadcast receiving apparatus for receiving a digital broadcast in which a plurality of image data is repeatedly transmitted, wherein the digital broadcast data is a multiplexed multiplexed stream, and the image data is multiplexed into the multiplexed stream. Image stream identification information that is included in an image stream of one or a plurality of image streams and that is the image stream identification information that is an identifier in the multiplexed stream of the image stream that includes the image data, and itself. Reproduction time information is added to the multiplexed stream, and an image correspondence table corresponding to the corresponding image data in a one-to-one correspondence is multiplexed in the multiplexed stream. Image correspondence table identifier indicating that it is an image correspondence table and the corresponding image data are uniquely specified The image data identifier, the image stream identification information including the corresponding image data, the reproduction start time and the reproduction end time of the corresponding image data are described, and this image correspondence table is repeatedly transmitted like the image data. Further, an all image data management table is multiplexed in the multiplexed stream, and the all image data management table is
The information of the all image data management table identifier that identifies itself as the all image data management table in the multiplexed stream and the information of the image data identifiers of all the image data included in the multiplexed stream are described. The all image data management table is also repeatedly transmitted, and the digital broadcast receiving device includes a receiving unit, an extracting unit, a reception control unit, and a storage unit, and the receiving unit receives the multiplexed stream. The storage unit includes an image data storage unit that stores image data, an all-image data management table storage unit that stores an all-image data management table, and an image correspondence table storage unit that stores an image correspondence table, The extraction unit extracts an image stream that matches the set extraction condition from the multiplexed stream received by the reception unit. The image extraction unit, the image correspondence table extraction unit that extracts the image correspondence table that matches the set extraction conditions, and the all image data management table extraction unit that extracts the entire image data management table that matches the set extraction conditions. The reception control unit controls the reception unit to receive the multiplexed stream, extracts all image data management tables by using the all image data management table identifier as an extraction condition, and stores all image data management table storage unit. After controlling the extraction unit to store the image data management table in the all image data management table storage unit, the reception control unit extracts the image correspondence table as image data storage processing. The extraction unit is controlled by using the image correspondence table identifier as an extraction condition to be stored in the image correspondence table storage unit, and one of the image correspondences Each time the table is extracted from the multiplexed stream and stored in the image correspondence table storage unit, the image correspondence table is read, and an image data identifier, an image stream identifier, a reproduction start time, and a reproduction end time are acquired, The extraction unit is controlled to extract the image stream identifier using the image stream identifier as the extraction condition, and only the image data whose reproduction time information of the extracted image stream is within the range of the reproduction start time and the reproduction end time. Is stored in the image data storage unit as image data corresponding to the image data identifier, and the reception control unit finishes storing the image data corresponding to all the image data identifiers listed in the all image data management table. A digital broadcast receiving apparatus, characterized in that the storage processing of the image data is repeated until the above.

2. The reception control unit, when the image correspondence table including the image data identifier for identifying the image data already stored in the image data storage unit is extracted,
A receiving device, wherein storage processing of the same image data is not repeated.

3. A digital broadcast receiving apparatus for receiving a digital broadcast in which a plurality of audio data is repeatedly transmitted, wherein the digital broadcast data is a multiplexed multiplexed stream, and the audio data is multiplexed into the multiplexed stream. Audio stream identification information that is included in an audio stream of one or more audio streams, and that is audio stream identification information that is an identifier in a multiplexed stream of an audio stream that includes audio data, and itself. Reproduction time information is added to the multiplexed stream, and an audio correspondence table corresponding to the corresponding audio data in a one-to-one correspondence is multiplexed in the multiplexed stream. A voice correspondence table identifier that indicates that it is a voice correspondence table and the corresponding voice data is uniquely specified. The audio data identifier, the audio stream identification information including the corresponding audio data, the reproduction start time and the reproduction end time of the corresponding audio data are described, and this audio correspondence table is repeatedly transmitted like the audio data. Further, an all audio data management table is multiplexed in the multiplexed stream, and the all audio data management table is
Information of all audio data management table identifiers indicating that the audio data management table itself is included in the multiplexed stream and audio data identifiers of all audio data included in the multiplexed stream are described. The audio data management table is also repeatedly transmitted, the digital broadcast receiving device includes a receiving unit, an extracting unit, a reception control unit, and a storage unit, the receiving unit receives the multiplexed stream, The storage unit includes a voice data storage unit that stores voice data, an all-voice data management table storage unit that stores an all-voice data management table, and a voice correspondence table storage unit that stores a voice correspondence table. The extraction unit extracts an audio stream that matches the set extraction condition from the multiplexed stream received by the reception unit. It has an output section, an audio correspondence table extraction section that extracts an audio correspondence table that matches the set extraction conditions, and an all audio data management table extraction section that extracts all audio data management tables that match the set extraction conditions. Then, the reception control unit controls the reception unit to receive the multiplexed stream, extracts all the audio data management tables using the all audio data management table identifier as an extraction condition, and stores them in the all audio data management table storage unit. After controlling the extraction unit to store the audio data management table in the audio all data storage unit, the reception control unit extracts the audio correspondence table and stores the audio correspondence table as a sound data storage process. The extraction unit is controlled by using the audio correspondence table identifier as an extraction condition to be stored in the storage unit, and the audio correspondence table is set to the multiplexed stream. The audio correspondence table is read every time it is stored in the audio correspondence table storage unit, the audio data identifier, the audio stream identifier, the reproduction start time, and the reproduction end time are acquired, and the audio stream identifier is extracted. As a condition,
Control the extractor to extract the audio stream identifier,
The reproduction time information of the extracted audio stream is only the audio data within the range of the reproduction start time and the reproduction end time as the audio data corresponding to the audio data identifier,
The audio data storage unit stores, and the reception control unit
A digital broadcast receiving apparatus, characterized in that the storage process of the audio data is repeated until the storage of the audio data corresponding to all the audio data identifiers listed in the all audio data management table is completed.

4. A digital broadcast receiving device for receiving a digital broadcast in which a plurality of control information tables for realizing a dialogue process with a user and image data associated with the control information table are repeatedly transmitted, wherein the digital broadcast data are multiplexed. Image data, the image data is included in an image stream of one or a plurality of image streams multiplexed in the multiplexed stream, and the image data includes an image including the image data. Image stream identification information, which is an identifier in a multiplexed stream of streams, and reproduction time information for reproducing itself are added, and each control information table is a control information table itself in the multiplexed stream. Control information table identifier indicating that, the control information ID that uniquely identifies the control information, and the corresponding image data Link information indicating other image data linked to the data, operation image data prompting the user to perform an operation, and action information based on the user's operation, and the multiplexed stream includes a corresponding image. An image correspondence table corresponding to data one-to-one is multiplexed, and in the image correspondence table, an image correspondence table identifier indicating that it is an image correspondence table in the multiplexed stream and corresponding image data. Image data identifier that uniquely identifies the image stream identification information that includes the corresponding image data,
The reproduction start time and the reproduction end time of the corresponding image data are described, and this image correspondence table is repeatedly transmitted in the same manner as the image data. Further, the all image data management table is multiplexed in the multiplexed stream. The all-image-data management table describes all-image-data management table identifiers indicating the all-image-data management tables and information about the image-data identifiers of all the image data included in the multiplexed stream. This all image data management table is also repeatedly transmitted, and the all control information management table is multiplexed in the multiplexed stream, and the all control information management table is multiplexed stream. Of all the control information management tables that indicates that it is the all control information management table, and The information of the control information IDs of all the control information tables included in the system is described, and this entire control information management table is also repeatedly transmitted, and the digital broadcast receiving device includes a receiving unit, an extracting unit, An image that includes a reception control unit and a storage unit, wherein the reception unit receives the multiplexed stream, and the extraction unit matches an extraction condition set from the multiplexed stream received by the reception unit. An image stream extraction unit that extracts a stream, an image correspondence table extraction unit that extracts an image correspondence table that matches the set extraction conditions, and all image data that extracts all image data management tables that match the set extraction conditions Management table extraction unit, control information table extraction unit that extracts a control information table that matches the set extraction condition, and match the set extraction condition An all-control-information management table extraction unit that extracts all the control-information management tables, and the storage unit stores an image-data storage unit that stores image data, and an all-image-data management table storage unit that stores all-image-data management tables. Unit, an image correspondence table storage unit that stores an image correspondence table, a control information table storage unit that stores a control information table, and an all control information management table storage unit that stores all control information management tables,
The reception control unit controls the reception unit to receive the multiplexed stream, extracts the all-image-data management table using the all-image-data management table identifier as an extraction condition, and stores the all-image-data management table storage unit. And that all the control information management table identifiers are extraction conditions,
The extraction unit is controlled to extract the entire control information management table and store it in the entire control information management table storage unit, and the entire image data management table is stored in the entire image data management table storage unit. As the storage process of the image correspondence table, the reception control unit controls the extraction unit using the image correspondence table identifier as an extraction condition so that the image correspondence table is stored in the image correspondence table storage unit, and the image correspondence table is multiplexed. Each time the image correspondence table is extracted from the stream and stored in the image correspondence table storage unit, the image correspondence table is read, and the image data identifier, the image stream identifier, the reproduction start time, and the reproduction end time are acquired, and the image stream identifier is obtained. As an extraction condition, the extraction unit is controlled to extract the image stream identifier, and the extracted image stream is re-created. Only the image data whose time information is within the range of the reproduction start time and the reproduction end time is stored in the image data storage unit as the image data corresponding to the image data identifier, and the reception control unit stores all the images. The storage process of the image data is repeated until the storage of the image data corresponding to all the image data identifiers described in the data management table is completed, and the entire control information management table is stored in the entire control information management table storage unit. Then, as a storage process of the control information table, the reception control unit controls the extraction unit using the control information table identifier as an extraction condition so that the control information table is extracted and stored in the control information table storage unit. The reception control unit is configured to control all the control information I listed in the control information management table.
Until the storage of the control information table corresponding to D is completed,
A digital broadcast receiving apparatus, characterized in that the storage process of the control information table is repeated.

5. A digital broadcast receiving device for receiving a digital broadcast in which a plurality of control information tables for realizing a dialogue process with a user and image data and audio data associated with the control information table are repeatedly transmitted,
The digital broadcast data is a multiplexed multiplexed stream, the image data, the audio data, and the control information table are included in the multiplexed stream, and the image data is multiplexed in the multiplexed stream. Included in an image stream of one or more image streams, the audio data is included in an image stream of one or more audio streams multiplexed into a multiplexed stream, and the image data and The audio data and the control information are transmitted as a multiplexed multiplexed stream, and the image data includes image stream identification information which is an identifier in the multiplexed stream of the image stream including the image data, and itself. Playback time information is added, and the audio data is Each of the control information tables has audio stream identification information, which is an identifier in the multiplexed stream of the audio stream containing There is a control information table identifier indicating that there is, a control information ID that uniquely identifies the control information, link information indicating other image data and voice data linked to the corresponding image data and voice data, and the user. It includes operation screen data for prompting an operation and action information based on a user's operation, and an image correspondence table corresponding to the corresponding image data in a one-to-one correspondence is multiplexed in the multiplexed stream. The correspondence table contains an image correspondence table indicating that it is an image correspondence table in the multiplexed stream. And Bull identifier,
The image data identifier that uniquely identifies the corresponding image data, the image stream identification information that includes the corresponding image data, and the reproduction start time and reproduction end time of the corresponding image data are described. Is repeatedly transmitted in the same manner as the image data, and the all image data management table is multiplexed in the multiplexed stream, and the all image data management table is the all image data management table. The information of the all image data management table shown and the information of the image data identifiers of all the image data included in the multiplexed stream are described, and this all image data management table is also repeatedly transmitted. , The audio correspondence table corresponding to the corresponding audio data and one-to-one is multiplexed. The audio correspondence table includes an audio correspondence table identifier indicating that it is an audio correspondence table in the multiplexed stream, an audio data identifier uniquely identifying the corresponding audio data, and an audio containing the corresponding audio data. The stream identification information, the reproduction start time and the reproduction end time of the corresponding audio data are described,
This audio correspondence table is also repeatedly transmitted in the same manner as the audio data, and the all-audio data management table is multiplexed in the multiplexed stream. Describes all audio data management table identifier indicating that it is an all audio data management table and information of audio data identifiers of all audio data included in the multiplexed stream. All control information management tables are multiplexed in the multiplexed stream. In the all control information management table, the control information management table itself is included in the multiplexed stream. All control information management table identifiers indicating that there is, and all control information tables included in the multiplexed stream Of the control information ID is described, and the entire control information management table is repeatedly transmitted. The digital broadcast receiving device includes a receiving unit, an extracting unit, a reception control unit, and a storage unit. , The receiver is
The storage unit receives the multiplexed stream, and the storage unit stores an image data storage unit that stores image data, an audio data storage unit that stores audio data, and an entire image data management table storage unit that stores an entire image data management table. An image correspondence table storage unit that stores an image correspondence table, an all audio data management table storage unit that stores an all sound data management table, a sound correspondence table storage unit that stores a sound correspondence table, and a control information table And a control information table storage unit for storing a control information management table, and the extraction unit matches a set extraction condition from the multiplexed stream received by the reception unit. Image stream extraction unit that extracts the image stream to be extracted, and the image correspondence table that matches the set extraction conditions Image correspondence table extraction unit, an all-image data management table extraction unit that extracts all image data management tables that match the set extraction conditions, and an audio data extraction unit that extracts audio streams that match the set extraction conditions A voice correspondence table extraction unit that extracts a voice correspondence table that matches the set extraction condition, and a whole voice data management table extraction unit that extracts a whole voice data management table that matches the set extraction condition. And a control information table extraction unit that extracts a control information table that matches the extraction condition, and a control information management table extraction unit that extracts all the control information management tables that match the set extraction condition. Controls the receiving unit to receive the multiplexed stream, and uses the all image data management table identifier as an extraction condition, Extracting the image data management table and storing it in the all image data management table storage unit, and extracting all the audio data management table using the all audio data management table identifier as the extraction condition and storing it in the all audio data management table storage unit. And the all control information management table identifier is used as an extraction condition to extract the entire control information management table and store it in the entire control information management table storage unit, and manage all image data. After the table is stored in the all image data management table storage unit, as the image data storage process, the reception control unit extracts the image correspondence table and extracts the image correspondence table identifier to be stored in the image correspondence table storage unit. As a condition, controlling the extraction unit,
Each time the image correspondence table is extracted from the multiplexed stream and stored in the image correspondence table storage unit, the image correspondence table is read to obtain the image data identifier, the image stream identifier, the reproduction start time, and the reproduction end time. Then, the extraction unit is controlled to extract the image stream identifier using the image stream identifier as the extraction condition, and the reproduction time information of the extracted image stream is within the range of the reproduction start time and the reproduction end time. Only the data is stored in the image data storage unit as the image data corresponding to the image data identifier, and the reception control unit stores the image data corresponding to all the image data identifiers stored in the all image data management table. Repeat the storage process of the image data until the end of the After being stored in the voice data management table storage unit, as a voice data storage process, the reception control unit extracts a voice correspondence table and stores the voice correspondence table storage unit in the voice correspondence table storage unit as an extraction condition. The extraction unit is controlled, and the voice correspondence table is
Each time the audio correspondence table is extracted from the multiplexed stream and stored in the audio correspondence table storage unit, the audio correspondence table is read to obtain the audio data identifier, the audio stream identifier, the reproduction start time, and the reproduction end time, and the audio stream The extraction unit is controlled to extract the audio stream identifier using the identifier as the extraction condition, and only the audio data whose reproduction time information of the extracted audio stream is within the range of the reproduction start time and the reproduction end time is audio data. As the voice data corresponding to the identifier, it is stored in the voice data storage unit, the reception control unit, until the storage of the image data corresponding to all the voice data identifiers stored in the entire voice data storage unit is completed, The image data storage process is repeated, and the entire control information management table is stored in the entire control information management table storage unit. After being stored, the storage process of the control information table, the reception control unit to extract and store the control information table storage unit control information table,
The control unit controls the extraction unit using the control information table identifier as an extraction condition, and the reception control unit stores the control information table corresponding to all the control information IDs described in all the control information management tables until the storage is completed. A digital broadcast receiving device, characterized in that a storage process of a control information table is repeated.

6. A digital broadcast receiving apparatus for receiving a digital broadcast in which a plurality of image data is repeatedly transmitted, wherein the digital broadcast data is a multiplexed multiplexed stream, and the image data is multiplexed into the multiplexed stream. Image stream identification information that is included in an image stream of one or a plurality of image streams and that is the image stream identification information that is an identifier in the multiplexed stream of the image stream that includes the image data, and itself. Reproduction time information is added to the multiplexed stream, and an image correspondence table corresponding to the corresponding image data in a one-to-one correspondence is multiplexed in the multiplexed stream. Image correspondence table identifier indicating that it is an image correspondence table and the corresponding image data are uniquely specified The image data identifier, the image stream identification information including the corresponding image data, the reproduction start time and the reproduction end time of the corresponding image data are described, and this image correspondence table is repeatedly transmitted like the image data. Further, an all image data management table is multiplexed in the multiplexed stream, and the all image data management table is
The information of the all-image-data management table identifier that identifies itself as the all-image data management table in the multiplexed stream and the information of the image-data identifiers of all the image data included in the multiplexed stream are described. The all image data management table is also repeatedly transmitted, and the digital broadcast receiving device includes a receiving unit, a reproducing unit, an operation control unit, an extracting unit, a reception control unit, a display unit, and a storage unit. The receiving unit receives the multiplexed stream, and the storage unit stores an image data storage unit for storing image data, an entire image data management table storage unit for storing an entire image data management table, and an image correspondence table. The present invention has a gift correspondence table storage unit, and the extraction unit matches a set extraction condition from the multiplexed stream received by the reception unit. An image stream extraction unit that extracts an image stream, an image correspondence table extraction unit that extracts an image correspondence table that matches the set extraction conditions, and an entire image that extracts all image data management tables that match the set extraction conditions The reception control unit has a data management table extraction unit, controls the reception unit to receive the multiplexed stream, and extracts all the image data management tables using all image data management table identifiers as extraction conditions. After controlling the extraction unit to store the image data in the image data management table storage unit and storing the entire image data management table in the entire image data management table storage unit, the reception control unit stores the image data as a storage process of the image data. Using the image correspondence table identifier as the extraction condition, the correspondence table is extracted and stored in the image correspondence table storage unit. And it controls the output section,
Each time one of the image correspondence tables is extracted from the multiplexed stream and stored in the image correspondence table storage unit,
The image correspondence table is read, the image data identifier, the image stream identifier, the reproduction start time, and the reproduction end time are acquired, and the extraction unit is controlled to extract the image stream identifier using the image stream identifier as the extraction condition. , The playback time information of the extracted image stream is
Only the image data within the range of the reproduction start time and the reproduction end time is stored in the image data storage unit as the image data corresponding to the image data identifier, and the reception control unit stores the entire image data management table. The storage processing of the image data is repeated until the storage of the image data corresponding to all the described image data identifiers is completed, and the operation control unit reproduces the image data by the user designating the specific image data identifier. When the reproduction of the image data is selected by the operation control unit, the reproduction unit controls the selection operation and reads out and reproduces the image data corresponding to the corresponding image data identifier from the image data storage unit, and the display unit. Displays the image data reproduced by the reproducing unit.

7. In the all image data management table,
Further, usage information indicating that the image data can be reproduced is described, the reproducing unit further has a clock unit for counting a clock, and the reproducing unit selects reproduction of the image data by the operation control unit. Then, the current time is acquired from the clock unit, the reproducible time limit information described in the all image data management table stored in the all image data management table storage unit is read, and the current time is the time limit information. A receiving device, wherein image data corresponding to a corresponding image data identifier is read from the image data storage unit and reproduced only when the image data is within the range.

8. The image correspondence table further describes time limit information that allows corresponding image data to be reproduced, the reproduction unit further includes a clock unit for counting a clock, and the reproduction unit includes the operation control unit. When the reproduction of the image data is selected by, the current time is acquired from the clock unit, the time limit information in the image correspondence table corresponding to the selected image data is read from the image correspondence table storage unit, and the current time is read. The receiving device is characterized in that the image data corresponding to the corresponding image data identifier is read out from the image data storage unit and reproduced only when is within the range of the time limit information.

9. A digital broadcast receiving apparatus for receiving a digital broadcast in which a plurality of audio data is repeatedly transmitted, wherein the digital broadcast data is a multiplexed multiplexed stream, and the audio data is multiplexed into the multiplexed stream. Audio stream identification information that is included in an audio stream of one or more audio streams, and that is audio stream identification information that is an identifier in a multiplexed stream of an audio stream that includes audio data, and itself. Reproduction time information is added to the multiplexed stream, and an audio correspondence table corresponding to the corresponding audio data in a one-to-one correspondence is multiplexed in the multiplexed stream. A voice correspondence table identifier that indicates that it is a voice correspondence table and the corresponding voice data is uniquely specified. The audio data identifier, the audio stream identification information including the corresponding audio data, the reproduction start time and the reproduction end time of the corresponding audio data are described, and this audio correspondence table is repeatedly transmitted like the audio data. Further, an all audio data management table is multiplexed in the multiplexed stream, and the all audio data management table is
The information of all audio data management table identifiers for identifying itself as the all audio data management table in the multiplexed stream and the information of the audio data identifiers of all the audio data included in the multiplexed stream are described. The all audio data management table is also repeatedly transmitted, and the digital broadcast receiving device includes a receiving unit, a reproducing unit, an operation control unit, an extraction unit, a reception control unit, an audio output unit, and a storage unit. The receiving unit receives the multiplexed stream, and the storage unit stores an audio data storage unit that stores audio data, an all-audio data management table storage unit that stores an all-audio data management table, and an audio correspondence. A voice correspondence table storage unit that stores a table, and the extraction unit
An audio stream extraction unit that extracts an audio stream that matches the set extraction condition from the multiplexed stream received by the reception unit, and an audio correspondence table extraction unit that extracts the audio correspondence table that matches the set extraction condition. , An all audio data management table extracting unit for extracting an all audio data management table that matches the set extraction condition, and the reception control unit controls the receiving unit to receive the multiplexed stream, Using the data management table identifier as the extraction condition, the extraction unit is controlled to extract the entire audio data management table and store it in the entire audio data management table storage unit, and the entire audio data management table is stored in the entire audio data management table storage unit. After being stored, as a voice data storage process, the reception control unit extracts the voice correspondence table and outputs the voice correspondence table. Each time one of the audio correspondence tables is extracted from the multiplexed stream and stored in the audio correspondence table storage unit, the extraction unit is controlled with the audio correspondence table identifier as an extraction condition to be stored in the audio storage table storage unit. The audio correspondence table is read, the audio data identifier, the audio stream identifier, the reproduction start time, and the reproduction end time are acquired, and the extraction unit is controlled to extract the audio stream identifier with the audio stream identifier as the extraction condition. The reproduction time information of the extracted audio stream stores only the audio data within the range of the reproduction start time and the reproduction end time as the audio data corresponding to the audio data identifier in the audio data storage unit, The reception control unit uses the audio corresponding to all audio data identifiers listed in the all audio data management table. Over to the storage of data is completed, repeat the process of storing the voice data,
The operation control unit controls a reproduction selection operation of audio data by the user by designating a specific audio data identifier, and the reproduction unit, when reproduction of the audio data is selected by the operation control unit, the audio data. The audio data corresponding to the corresponding audio data identifier is read from the storage unit and reproduced,
The digital broadcast receiving device, wherein the audio output unit outputs the audio data reproduced by the reproducing unit.

10. A digital broadcast receiving device for receiving a digital broadcast in which a plurality of control information tables for realizing user interaction processing and image data associated with the control information tables are repeatedly transmitted, wherein the image data and the control are provided. The information is transmitted as a multiplexed multiplexed stream, and the image data includes image stream identification information which is an identifier in the multiplexed stream of the image stream including the image data, and a reproduction time at which the image data is reproduced. Each control information table is provided with information, and each control information table has a control information table identifier indicating that it is a control information table in the multiplexed stream, a control information ID uniquely identifying the control information, and corresponding image data. Link information indicating other image data linked to the link and operation screen data that prompts the user to operate. And the action information based on the user's operation, and an image correspondence table corresponding to the corresponding image data in a one-to-one correspondence is multiplexed in the multiplexed stream. Corresponds to an image correspondence table identifier indicating that it is an image correspondence table in the encoded stream, an image data identifier that uniquely identifies the corresponding image data, and image stream identification information that includes the corresponding image data. The reproduction start time and the reproduction end time of the image data are described, and this image correspondence table is repeatedly transmitted in the same manner as the image data. Further, the all image data management table is multiplexed in the multiplexed stream. In the all image data management table,
The all-image-data management table identifier indicating that it is the all-image data management table and the information of the image-data identifiers of all the image data included in the multiplexed stream are described. This all-image data management table is also repeatedly transmitted. Further, an all control information management table is multiplexed in the multiplexed stream, and the entire control information management table indicates that it is the entire control information management table in the multiplexed stream. All the control information management table identifiers shown and information of the control information IDs of all the control information tables included in the multiplexed stream are described, and this all control information management table is also repeatedly transmitted. Is a reception unit, a reproduction unit, an operation control unit, an extraction unit, a reception control unit, a display unit, and an audio output unit. An image stream including a storage unit, wherein the receiving unit receives the multiplexed stream, and the extracting unit extracts an image stream that matches a set extraction condition from the multiplexed stream received by the receiving unit. An extraction unit, an image correspondence table extraction unit that extracts an image correspondence table that matches the set extraction conditions, an all-image-data management table extraction unit that extracts all-image-data management tables that match the set extraction conditions, A control information table extracting unit that extracts a control information table that matches the set extraction condition and an all control information management table extracting unit that extracts all control information management tables that match the set extraction condition, The unit includes an image data storage unit that stores image data, and an all-image-data management table storage unit that stores all-image-data management tables. The reception control unit includes an image correspondence table storage unit that stores an image correspondence table, a control information table storage unit that stores a control information table, and an all control information management table storage unit that stores all control information management tables. Controlling the receiving unit to receive the multiplexed stream, extracting the entire image data management table using the entire image data management table identifier as an extraction condition, and storing it in the entire image data management table storage unit; The extraction unit is controlled so that the entire control information management table is extracted and stored in the entire control information management table storage unit by using the information management table identifier as the extraction condition, and the entire image data management table manages the entire image data. The reception control unit stores an image correspondence table stored in a table storage unit and stores the image data. The image correspondence table identifier to be stored in the image correspondence table storage unit as an extraction condition, and controls the extraction unit,
Each time the image correspondence table is extracted from the multiplexed stream and stored in the image correspondence table storage unit, the image correspondence table is read to obtain the image data identifier, the image stream identifier, the reproduction start time, and the reproduction end time. Then, the extraction unit is controlled to extract the image stream identifier using the image stream identifier as the extraction condition, and the reproduction time information of the extracted image stream is within the range of the reproduction start time and the reproduction end time. Only the data is stored in the image data storage unit as the image data corresponding to the image data identifier, and the reception control unit stores the image data corresponding to all the image data identifiers stored in the all image data management table storage unit. The storage process of the image data is repeated until the storage of all the control information management tables is completed. After being stored in the control information management table storage unit, as a control information table storage process, the reception control unit assigns a control information table identifier so that the control information table is extracted and stored in the control information table storage unit. As the extraction condition, the extraction unit is controlled, and the reception control unit stores the control information table until the storage of the control information table corresponding to all the control information IDs described in the all control information management table is completed. By repeating the process, the operation control unit controls the reproduction selection operation of the image data and the control information table by the designation of the specific image data identifier and the specific control information ID by the user, and the reproducing unit stores the image data storage. Image data corresponding to the selected image data identifier is read out and reproduced from the control information table storage unit. The control information table corresponding to the control information ID selected by raw selection is read, and the operation screen data in the control information table is reproduced, and the display unit combines the image data reproduced by the reproduction unit with the operation screen data. A digital broadcast receiving device characterized by being displayed.

11. A plurality of control information tables for realizing a dialogue process with a user, and a digital broadcast receiving apparatus for receiving a digital broadcast in which image data and audio data associated with the control information tables are repeatedly transmitted, And the audio data and the control information are transmitted as a multiplexed multiplexed stream, and the image data includes image stream identification information which is an identifier in the multiplexed stream of the image stream including the image data, and Reproduction time information for reproducing itself is added, and the audio data includes audio stream identification information that is an identifier in a multiplexed stream of audio streams including the audio data, and reproduction time information for reproducing itself. Is added to each control information table,
A control information table identifier indicating that it is a control information table in the multiplexed stream, a control information ID uniquely identifying the control information, and other image data linked to the corresponding image data are shown. It includes link information, operation screen data for prompting the user to perform an operation, and action information based on the user's operation, and the multiplexed stream is provided with an image correspondence table corresponding to the corresponding image data in a one-to-one correspondence. The image correspondence table includes an image correspondence table identifier indicating that it is an image correspondence table in the multiplexed stream,
The image data identifier that uniquely identifies the corresponding image data, the image stream identification information that includes the corresponding image data, and the reproduction start time and reproduction end time of the corresponding image data are described. Is repeatedly transmitted in the same manner as the image data, and the all image data management table is multiplexed in the multiplexed stream, and the all image data management table is the all image data management table. The information of the all image data management table shown and the information of the image data identifiers of all the image data included in the multiplexed stream are described, and this all image data management table is also repeatedly transmitted. , The audio correspondence table corresponding to the corresponding audio data and one-to-one is multiplexed. The audio correspondence table includes an audio correspondence table identifier indicating that it is an audio correspondence table in the multiplexed stream, an audio data identifier uniquely identifying the corresponding audio data, and an audio containing the corresponding audio data. The stream identification information, the reproduction start time and the reproduction end time of the corresponding audio data are described,
This audio correspondence table is also repeatedly transmitted in the same manner as the audio data, and the all-audio data management table is multiplexed in the multiplexed stream. Describes all audio data management table identifier indicating that it is an all audio data management table and information of audio data identifiers of all audio data included in the multiplexed stream. All control information management tables are multiplexed in the multiplexed stream. In the all control information management table, the control information management table itself is included in the multiplexed stream. All control information management table identifiers indicating that there is, and all control information tables included in the multiplexed stream Of the control information ID is described, and the entire control information management table is repeatedly transmitted. The digital broadcast receiving apparatus includes a receiving unit, a reproducing unit, an operation control unit, an extracting unit, and a receiving unit. A control unit, a display unit, and a storage unit, wherein the receiving unit receives the multiplexed stream, the storage unit stores an image data storage unit for storing image data, and audio data for storing audio data. A storage unit, an all-image data management table storage unit that stores an all-image data management table, an image correspondence table storage unit that stores an image correspondence table, and an all-sound data management table storage unit that stores all-sound data management table A voice correspondence table storage unit for storing a voice correspondence table, a control information table storage unit for storing a control information table,
An image stream that has an all-control-information management table storage unit that stores an all-control-information management table, wherein the extraction unit extracts an image stream that matches a set extraction condition from the multiplexed stream received by the reception unit. An extraction section,
An image correspondence table extraction unit that extracts an image correspondence table that matches the set extraction conditions, an all image data management table extraction unit that extracts all image data management tables that match the set extraction conditions, and a set extraction An audio stream extraction unit that extracts an audio stream that matches the conditions, an audio correspondence table extraction unit that extracts an audio correspondence table that matches the set extraction conditions, and an all audio data management table that matches the set extraction conditions. All voice data management table extraction unit to be extracted, control information table extraction unit to extract control information table that matches the set extraction condition, and all control to extract all control information management table that matches the set extraction condition An information management table extraction unit is provided, and the reception control unit controls the reception unit to receive the multiplexed stream. Then, all the image data management tables are extracted by using the all image data management table identifier as an extraction condition and stored in the all image data management table storage unit, and all the audio data management is performed by using the all audio data management table identifier as the extraction condition. Extracting a table and storing it in the all voice data management table storage unit, and extracting all control information management tables using the all control information management table identifier as an extraction condition and storing them in the all control information management table storage unit. Control the extractor to
After the all-image-data management table is stored in the all-image-data management table storage unit, as image data storage processing,
The reception control unit controls the extraction unit using an image correspondence table identifier as an extraction condition so that the image correspondence table is extracted and stored in the image correspondence table storage unit, and the image correspondence table is extracted from the multiplexed stream. Every time the image correspondence table is stored in the correspondence table storage unit, the image correspondence table is read, and the image data identifier, the image stream identifier, the reproduction start time, and the reproduction end time are acquired, and the image stream identifier is used as the extraction condition. The extraction unit is controlled to extract the stream identifier, and only the image data whose reproduction time information of the extracted image stream is within the range of the reproduction start time and the reproduction end time is set as the image data corresponding to the image data identifier. , The image data storage unit, and the reception control unit stores the entire image data management table storage unit. Until the storage of the image data corresponding to all the stored image data identifiers is completed, the storage process of the image data is repeated, and after the all audio data management table is stored in the all audio data management table storage unit, As a voice data storage process, the reception control unit controls the extraction unit by using the voice correspondence table identifier as an extraction condition so as to extract the voice correspondence table and store the voice correspondence table in the voice correspondence table storage unit. Each time the audio correspondence table is extracted from the multiplexed stream and stored in the audio correspondence table storage unit, the audio correspondence table is read to obtain the audio data identifier, the audio stream identifier, the reproduction start time, and the reproduction end time, and the audio stream The extraction unit is controlled to extract the audio stream identifier using the identifier as the extraction condition, and the extracted Only the audio data whose reproduction time information of the voice stream is within the range of the reproduction start time and the reproduction end time is stored in the audio data storage unit as the audio data corresponding to the audio data identifier, and the reception control unit Repeats the storage process of the image data until the storage of the image data corresponding to all the image data identifiers stored in the all-image-data management table storage unit is completed, and the all-control-information management table displays all the control information. After being stored in the management table storage unit, as a control information table storage process, the reception control unit extracts the control information table and stores it in the control information table storage unit, using the control information table identifier as an extraction condition. The reception control unit controls the extraction unit, and the reception control unit controls all the control information IDs listed in the all control information management table. The storage process of the control information table is repeated until the storage of the control information table is completed, and the operation control unit controls the image data by the user to specify a specific image data identifier and a specific audio data identifier. And controlling the reproduction selection operation of the audio data and the control information table, the reproducing unit reads out and reproduces the image data corresponding to the image data identifier selected for reproduction from the image data storage unit, and reproduces it from the audio data storage unit. The audio data corresponding to the selected audio data identifier is read out and reproduced, and the control information table corresponding to the selected control information ID is reproduced from the control information table storage unit, and the operation screen data in the control information table is reproduced. Done,
The display unit synthesizes and displays the image data reproduced by the reproducing unit and the operation screen data, and the audio output unit outputs the audio data reproduced by the reproducing unit. Broadcast receiver.

12. A digital broadcast receiving device for receiving a digital broadcast in which a plurality of control information tables for realizing user interaction processing and image data associated with the control information tables are repeatedly transmitted, wherein the image data and the control are provided. The information is transmitted as a multiplexed multiplexed stream, and the image data includes image stream identification information which is an identifier in the multiplexed stream of the image stream including the image data, and a reproduction time at which the image data is reproduced. Each control information table is provided with information, and each control information table has a control information table identifier indicating that it is a control information table in the multiplexed stream, a control information ID uniquely identifying the control information, and corresponding image data. Link information indicating other image data linked to the link and operation screen data that prompts the user to operate. And the action information based on the user's operation, and an image correspondence table corresponding to the corresponding image data in a one-to-one correspondence is multiplexed in the multiplexed stream. Corresponds to an image correspondence table identifier indicating that it is an image correspondence table in the encoded stream, an image data identifier that uniquely identifies the corresponding image data, and image stream identification information that includes the corresponding image data. The reproduction start time and the reproduction end time of the image data are described, and this image correspondence table is repeatedly transmitted in the same manner as the image data. Further, the all image data management table is multiplexed in the multiplexed stream. In the all image data management table,
The all-image-data management table identifier indicating the all-image-data management table and the information of the image-data identifiers of all the image data included in the multiplexed stream are described, and this all-image-data management table is also repeatedly transmitted. Further, an all control information management table is multiplexed in the multiplexed stream, and the entire control information management table indicates that it is the entire control information management table in the multiplexed stream. All the control information management table identifiers shown and information of the control information IDs of all the control information tables included in the multiplexed stream are described, and this all control information management table is also repeatedly transmitted. The reception unit, the extraction unit, the operation control unit, the reproduction unit, the reception control unit, and the storage unit, The control unit receives the storage or a stream by the user accepts the received reproduction selection operation,
When accepting a selection operation for reception / reproduction, as a set of image data to be reproduced and control information, a selection operation for an image data identifier and a control information table identifier is also accepted, and the receiving unit receives the multiplexed stream, The memory is
An image data storage unit that stores image data, an entire image data management table storage unit that stores an entire image data management table, an image correspondence table storage unit that stores an image correspondence table, and a control information table that stores a control information table. A storage unit, an all-control-information management-table storage unit that stores an all-control-information management table, and the reception control unit are multiplexed when the operation control unit receives a selection operation of stream reception storage by the user. Controlling the receiving unit to receive the encoded stream, extracting the entire image data management table using the entire image data management table identifier as an extraction condition, and storing it in the entire image data management table storage unit; and total control information management All control information management table storage unit by extracting all control information management table using table identifier as extraction condition When the all image data management table is stored in the all image data management table storage unit by controlling the extraction unit so as to store the image data, the reception control unit stores the image correspondence table as the image data storage process. Each time the image correspondence table is extracted from the multiplexed stream and stored in the image correspondence table storage unit, the extraction unit is controlled using the image correspondence table identifier as an extraction condition so as to be extracted and stored in the image correspondence table storage unit. , The image correspondence table is read, an image data identifier, an image stream identifier, a reproduction start time and a reproduction end time are acquired, and the image stream identifier is used as an extraction condition,
Control the extractor to extract the image stream identifier,
Reproduction time information of the extracted image stream, only the image data within the range of the reproduction start time and the reproduction end time as the image data corresponding to the image data identifier,
The image data storage unit stores, and the reception control unit
The storage process of the image data is repeated until the storage of the image data corresponding to all the image data identifiers stored in the all image data management table storage unit is completed, and
After the all control information management table is stored in the all control information management table storage unit, as the storage process of the control information table, the reception control unit extracts the control information table and stores it in the control information table storage unit, The control unit controls the extraction unit using the control information table identifier as the extraction condition, and the reception control unit stores the control information table corresponding to all the control information IDs described in the entire control information management table until the storage is completed. The storage process of the control information table is repeated, and when the operation control unit receives a selection operation of stream reception / reproduction by the user, the reception control unit controls the reception unit to receive the multiplexed stream. All image data management table is extracted by controlling all image data management table identifiers as extraction conditions. Be stored in 憶部, and as an extraction condition all control information management table identifier, to perform storing all control information management table storage unit extracts all control information management table, and controls the extraction unit,
When the all-image-data management table is stored in the all-image-data management table storage unit, as image data reproduction processing,
The reception control unit controls the extraction unit using the image correspondence table identifier and the image data identifier as extraction conditions so that the image correspondence table corresponding to the designated image data identifier is extracted and stored in the image correspondence table storage unit. When the corresponding image correspondence table is extracted from the multiplexed stream and stored in the image correspondence table storage unit, the image correspondence table is read and the image data identifier, the image stream identifier, the reproduction start time, and the reproduction end time are read. And the extraction unit is controlled to extract the image stream identifier using the image stream identifier as the extraction condition, and the reproduction unit determines that the reproduction time information of the extracted image stream is the reproduction start time and the reproduction end. Only the image data within the time range is played back, and all control information management tables After being stored in the management table storage unit,
As the control information table reproducing process, the reception control unit extracts the designated control information table and stores it in the control information table storage unit by using the control information table identifier and the control information ID as extraction conditions. When the control information table is stored in the control information table storage unit, the reproducing unit reproduces the operation screen data in the control information table, and the display unit reproduces the operation screen data. A digital broadcast receiving device characterized in that image data and operation screen data are combined and displayed.

13. If the operation control unit accepts a selection operation of stream reception / reproduction by the user and the image data identifier and the control information ID, which are a set of image data and control information to be reproduced, are not designated, the entire image The reception / reproduction process is performed assuming that the image data identifier described first in the data management table and the control information ID described first in the all control information management table are designated. Digital broadcasting receiver.

14. When the operation control unit receives a selection operation of stream reception / reproduction by the user, when the image data corresponding to the designated image data identifier is already stored in the image data storage unit, the reception control is performed. The unit does not perform the process of extracting the corresponding image data from the multiplexed stream, the reproducing unit reproduces the image data stored in the image data storage unit, and corresponds to the designated control information ID. When the control information table is already stored in the control information table storage unit, the reception control unit does not perform the process of extracting the corresponding control information table from the multiplexed stream, and the reproduction unit sets the control information table. A digital broadcast receiving apparatus characterized by reproducing operation screen data in a control information table stored in a storage unit.

15. The all-image-data management table further describes time limit information that allows the image data to be reproduced, and the all-control information management table further describes time limit information that allows the control information management table to be reproduced. The reproduction unit further includes a clock unit that counts a clock, and when the operation control unit receives a selection operation of stream reception / reproduction by the user, the image data corresponding to the specified image data identifier is displayed. If it is already stored in the image data storage unit, the current time is further acquired from the clock unit, and the reproduction described in the all image data management table stored in the all image data management table storage unit is performed. Read possible deadline information,
If the current time is within the time limit information,
The reception control unit does not perform the process of extracting the corresponding image data from the multiplexed stream, the reproduction unit reproduces the image data stored in the image data storage unit, and the specified control information ID When the control information table corresponding to is already stored in the control information table storage unit, the current time is further acquired from the clock unit, and all control information management stored in the all control information management table storage unit is performed. When the reproducible time limit information described in the table is read and the current time is within the range of the time limit information, the reception control unit extracts the corresponding control information table from the multiplexed stream. First, the reproducing unit reproduces the operation screen data in the control information table stored in the control information table storage unit. Broadcast receiver.

16. The image correspondence table further describes time limit information that allows corresponding image data to be reproduced, and the control information table further describes time limit information that allows the control information table to be reproduced. The reproducing unit further includes a clock unit for counting a clock, and when the operation control unit receives a selection operation of stream reception / reproduction by the user, the image data corresponding to the designated image data identifier is the image data. When the data is already stored in the data storage unit, the current time is further acquired from the clock unit, and reproducible in the image correspondence table corresponding to the image data identifier stored in the image correspondence table storage unit is reproducible. When the deadline information is read out and the current time is within the range of the deadline information, the reception control unit reads from the multiplexed stream. Without extraction processing of the image data to be, the playback unit performs the playback of the image data stored in the image data storage unit, also,
When the control information table corresponding to the designated control information ID is already stored in the control information table storage unit, the current time is further acquired from the clock unit and stored in the control information table storage unit. When the reproducible time limit information described in the previous period control information management table corresponding to the control information ID is read, and if the current time is within the range of the time limit information, the reception control unit determines from the multiplexed stream. A digital broadcast receiving apparatus, characterized in that the reproducing section reproduces the operation screen data in the control information table stored in the control information table storage section, without extracting the corresponding control information table. .

17. Version information of image data is further described in the all image data management table, version information of the control information management table is further described in the all control information management table, and is used by the operation control unit. When a selection operation for receiving / reproducing a stream by a person is accepted, if the image data corresponding to the specified image data identifier has already been stored in the image data storage unit, the reception control unit extracts all the extracted data. When the version information of the image data management table matches the version information stored in the all image data management table storage unit, the reception control unit does not perform the extraction processing of the corresponding image data from the multiplexed stream, The reproduction section reproduces the image data stored in the image data storage section, and also controls the designated control information I. When the control information table corresponding to is already stored in the control information table storage unit, the reception control unit stores the version information of the extracted all control information management table in the all control information management table storage unit. If the version information matches the version information, the reception control unit does not perform the extraction process of the corresponding image correspondence table from the multiplexed stream, and the reproduction unit stores the control information table stored in the control information table storage unit. A digital broadcast receiving device characterized by reproducing the operation screen data in.

18. A digital broadcasting system in which a plurality of image data is repeatedly transmitted includes the following digital broadcast transmitting device and digital broadcast receiving device, and the digital broadcast transmitting device corresponds to a plurality of image data and an image corresponding to the image data. A transmission unit that multiplexes the table and the entire image data management table and repeatedly transmits as a multiplexed stream, wherein the image data is included in an image stream of one or a plurality of image streams; The image data is provided with image stream identification information, which is an identifier in the multiplexed stream of the image stream including the image data, and reproduction time information, at which the image data is reproduced. It corresponds to the image correspondence table identifier that indicates that it is an image correspondence table in the stream. Described are an image data identifier that uniquely identifies image data, image stream identification information that includes corresponding image data, and a reproduction start time and a reproduction end time of the corresponding image data. Describes an all-image-data management table identifier that identifies itself as the all-image data management table in the multiplexed stream, and information about the image-data identifiers of all the image data included in the multiplexed stream. The digital broadcast receiving apparatus includes a receiving unit, an extracting unit, a reception control unit, and a storage unit, the receiving unit receives the multiplexed stream, and the storage unit stores image data. Image data storage section, an all-image data management table storage section that stores an all-image data management table, and an image storage table that stores an image correspondence table. And a correspondence table storage unit, wherein the extraction unit extracts an image stream that matches the set extraction condition from the multiplexed stream received by the reception unit, and the set extraction condition. An image correspondence table extraction unit that extracts a matching image correspondence table and an all image data management table extraction unit that extracts all image data management tables that match the set extraction conditions are provided, and the reception control unit is a multiplexing unit. The receiving unit is controlled to receive a stream, and the extraction unit is controlled to extract the entire image data management table and store it in the entire image data management table storage unit using the entire image data management table identifier as an extraction condition. After the all image data management table is stored in the all image data management table storage unit, the reception control is performed as image data storage processing. The unit controls the extraction unit by using the image correspondence table identifier as an extraction condition so as to extract the image correspondence table and store it in the image correspondence table storage unit,
Each time one of the image correspondence tables is extracted from the multiplexed stream and stored in the image correspondence table storage unit,
The image correspondence table is read, the image data identifier, the image stream identifier, the reproduction start time, and the reproduction end time are acquired, and the extraction unit is controlled to extract the image stream identifier using the image stream identifier as the extraction condition. , The playback time information of the extracted image stream is
Only the image data within the range of the reproduction start time and the reproduction end time is stored in the image data storage unit as the image data corresponding to the image data identifier, and the reception control unit stores the entire image data management table. A digital broadcasting system characterized in that the storage process of the image data is repeated until the storage of the image data corresponding to all the described image data identifiers is completed.

19. A plurality of control information tables that realize interactive processing with a user, and a digital broadcasting system in which a plurality of image data associated with the control information tables are repeatedly transmitted are the following digital broadcast transmitting devices:
A digital broadcast receiving apparatus, wherein the digital broadcast transmitting apparatus includes a plurality of image data, an image correspondence table corresponding to the image data, an all image data management table, and a plurality of audio data. An audio correspondence table corresponding to audio data, an all-audio data management table, the control information table, and an all-control-information management table are multiplexed and are repeatedly transmitted as a multiplexed stream. The data includes
The image stream identification information, which is an identifier in the multiplexed stream of the image stream including the image data, and the reproduction time information for reproducing the image stream itself are added, and each control information table is included in the multiplexed stream. Is a control information table, a control information ID that uniquely identifies the control information, link information that indicates other image data linked to the corresponding image data, and a user operation. Image correspondence table identifier that indicates that the image correspondence table is itself an image correspondence table in the multiplexed stream, and the corresponding image. Image data identifier that uniquely identifies the data and image stream identification information that includes the corresponding image data , The reproduction start time and the reproduction end time of the corresponding image data are described, and this image correspondence table is repeatedly transmitted in the same manner as the image data, and the all image data management table includes the all image data management table. All image data management table identifiers indicating that there is and information of image data identifiers of all image data included in the multiplexed stream are described. This all image data management table is also repeatedly transmitted, and all the control The information management table includes all control information management table identifiers indicating that it is the entire control information management table in the multiplexed stream, and information of control information IDs of all control information tables included in the multiplexed stream. This control information management table is also repeatedly transmitted, and The communication device includes a reception unit, an extraction unit, an operation control unit, a reproduction unit, a reception control unit, and a storage unit, and the operation control unit is for receiving and storing or receiving and reproducing a stream by a user. When receiving the selection operation and the reception / reproduction selection operation, the reception unit also receives the selection operation of the image data identifier and the control information table identifier as a set of image data and control information to be reproduced, And the storage unit stores an image data storage unit that stores image data, an entire image data management table storage unit that stores an entire image data management table, and an image correspondence table storage unit that stores an image correspondence table, The control information table storage unit for storing the control information table, the all control information management table storage unit for storing the all control information management table, and the reception control unit When the operation control unit receives a selection operation for receiving and storing a stream by the user, the reception unit is controlled to receive the multiplexed stream, and the entire image data management table identifier is used as an extraction condition for all images. Extracting the data management table and storing it in the whole image data management table storage unit, and extracting all the control information management table by using the whole control information management table identifier as the extraction condition and storing it in the whole control information management table storage unit When the all-image-data management table is stored in the all-image-data management table storage unit so that the extraction unit is controlled to
The extraction unit is controlled by using the image correspondence table identifier as an extraction condition so that the image correspondence table is extracted and stored in the image correspondence table storage unit, and the image correspondence table is extracted from the multiplexed stream and stored in the image correspondence table storage unit. Each time the image correspondence table is read, the image data identifier, the image stream identifier, the reproduction start time, and the reproduction end time are acquired, and the image stream identifier is extracted using the image stream identifier as the extraction condition. The extraction unit is controlled, and only the image data whose reproduction time information of the extracted image stream is within the range of the reproduction start time and the reproduction end time is stored in the image data storage unit as the image data corresponding to the image data identifier. The reception control unit stores all the data stored in the all image data management table storage unit. The storage process of the image data is repeated until the storage of the image data corresponding to the image data identifier is completed, and after the entire control information management table is stored in the entire control information management table storage unit, the storage of the control information table is performed. As a process, the reception control unit controls the extraction unit by using the control information table identifier as an extraction condition so that the control information table is extracted and stored in the control information table storage unit. The storage process of the control information table is repeated until the storage of the control information tables corresponding to all the control information IDs described in the information management table is completed, and the reception control unit uses the operation control unit to allow the user When the operation to select the reception / reproduction of the stream is accepted, the receiving unit is controlled to receive the multiplexed stream, and the whole image is received. All the image data management tables are extracted and stored in the all image data management table storage section using the data management table identifier as the extraction condition, and all control information management tables are extracted using the all control information management table identifier as the extraction condition. When the all image data management table is stored in the all image data management table storage unit, the extraction unit is controlled so as to be stored in the all control information management table storage unit. The reception control unit controls the extraction unit using the image correspondence table identifier and the image data identifier as extraction conditions so that the image correspondence table corresponding to the designated image data identifier is extracted and stored in the image correspondence table storage unit, The corresponding image correspondence table is extracted from the multiplexed stream and stored in the image correspondence table storage unit. Then, the image correspondence table is read, the image data identifier, the image stream identifier, the reproduction start time, and the reproduction end time are acquired, and the image stream identifier is extracted using the image stream identifier as an extraction condition. And the reproduction unit reproduces only the image data whose reproduction time information of the extracted image stream is within the range of the reproduction start time and the reproduction end time, and the entire control information management table. After being stored in the control information management table storage unit, as a control information table reproduction process, the reception control unit extracts the designated control information table and stores it in the control information table storage unit. And the control information ID is used as an extraction condition to control the extraction unit, and the control information table is stored in the control information table storage unit. Then, the reproduction unit reproduces the operation screen data in the control information table, and the display unit combines the image data reproduced by the reproduction unit with the operation screen data and displays the combined result. Characteristic digital broadcasting system.

20. A plurality of control information tables for realizing a dialogue process with a user are digital broadcast receiving devices for receiving digital broadcasts that are repeatedly transmitted, and each control information table is a control information itself in a multiplexed stream. A control information table identifier that indicates a table, a control information ID that uniquely identifies the control information, link information that indicates other image data linked to the corresponding image data, and an operation that prompts the user to perform an operation. It includes screen data and action information based on a user's operation, and the control information management table is multiplexed in the multiplexed stream, and the control information management table includes information in the multiplexed stream. All control information management table identifier indicating that it is an all control information management table and is included in the multiplexed stream. The information of the control information IDs of all the control information tables is described, and this entire control information management table is also repeatedly transmitted. The digital broadcast receiving device includes a receiving unit, an extracting unit, an operation control unit, A reproduction unit, a reception control unit, and a storage unit,
The operation control unit receives a stream reception storage operation by a user or a reception reproduction selection operation. When the reception reproduction selection operation is received, the operation control unit also receives a control information table identifier selection operation as reproduction control information.
The receiving unit receives the multiplexed stream, and the storage unit includes a control information table storage unit that stores a control information table, an all control information management table storage unit that stores an all control information management table, and the reception. When the operation control unit receives a selection operation for receiving and storing a stream by the user, the control unit controls the receiving unit to receive the multiplexed stream, and uses the entire control information management table identifier as an extraction condition. After controlling the extraction unit to extract the entire control information management table and store it in the entire control information management table storage unit, after the entire control information management table is stored in the entire control information management table storage unit As the control information table storage processing, the reception control unit extracts the control information table and stores it in the control information table storage unit. The control unit controls the extraction unit with a table identifier as an extraction condition, and the reception control unit controls the reception of the control information until the storage of the control information table corresponding to all the control information IDs described in the entire control information management table is completed. The table storage process is repeated, and the reception control unit controls the reception unit to receive the multiplexed stream when the operation control unit receives a selection operation of stream reception / reproduction by the user. After the all control information management table is stored in the all control information management table storage unit, the reception control unit extracts the designated control information table and stores it in the control information table storage unit as a reproduction process of the control information table. In order to store the control information table identifier and the control information ID as the extraction conditions, the extraction unit is controlled, and the control information table is the control information. When stored in a table storage unit, the reproduction unit reproduces the operation screen data in the control information table, and the display unit displays the operation screen data reproduced by the reproduction unit. And a digital broadcasting receiver.

21. When the operation control unit accepts a selection operation of stream reception / reproduction by the user and the image data identifier and the control information ID, which are a set of image data and control information to be reproduced, are not designated, the all control Control information ID described first in the information management table
The digital broadcast receiving apparatus is characterized in that the reception / reproduction processing is performed as specified.

22. When the operation control unit accepts a selection operation of stream reception / reproduction by the user, if the control information table corresponding to the specified control information ID is already stored in the control information table storage unit, the reception is performed. The control unit does not perform the process of extracting the corresponding control information table from the multiplexed stream, and the reproduction unit reproduces the operation screen data in the control information table stored in the control information table storage unit. A digital broadcast receiving device characterized by.

23. The all control information management table further describes time limit information that allows the control information management table to be reproduced, and the reproduction unit further has a clock unit for counting a clock, and the operation control unit allows the user to operate. When the selection operation of the reception and reproduction by is received, if the control information table corresponding to the specified control information ID is already stored in the control information table storage unit, the current time is further acquired from the clock unit, When the reproducible time limit information described in the all control information management table stored in the all control information management table storage unit is read, and the current time is within the range of the time limit information, the reception control is performed. The unit does not perform the process of extracting the corresponding control information table from the multiplexed stream, and the reproducing unit is
A digital broadcast receiving apparatus, characterized in that the operation screen data in the control information table stored in the control information table storage section is reproduced.

24. The control information table further describes time limit information that allows the control information table to be played back. The playback unit further includes a clock unit that counts a clock, and the operation control unit creates a stream of a stream by a user. When the operation of selecting the reception / reproduction is accepted, if the control information table corresponding to the specified control information ID is already stored in the control information table storage unit, the current time is further obtained from the clock unit, When the reproducible time limit information described in the previous period control information management table corresponding to the control information ID stored in the control information table storage unit is read and the current time is within the range of the time limit information, The reception control unit does not perform extraction processing of the corresponding control information table from the multiplexed stream, and the reproduction unit writes the control information table. To reproduce the operation screen data in the stored control information table in section, a digital broadcast receiving apparatus characterized by.

25. In the all control information management table, version information of the control information management table is further described, and when the operation control unit receives a selection operation of stream reception / reproduction by the user, the specified control information ID is set. When the corresponding control information table is already stored in the control information table storage unit, the reception control unit stores the version information of the extracted all control information management table in the all control information management table storage unit. When the version information matches the version information, the reception control unit does not perform the process of extracting the corresponding image correspondence table from the multiplexed stream, and the reproduction unit does not execute the control information table stored in the control information table storage unit. A digital broadcast receiving device characterized by reproducing the operation screen data therein.

In this specification, "digital broadcasting" means broadcasting that transmits at least digitized data, and it does not matter whether it is satellite broadcasting, terrestrial broadcasting, or cable broadcasting. .

The "content element" means a part of an image, a sound or the like finally provided to the viewer. In the embodiment, the still image VE1 as the presentation information is used.
And so on.

"Linked content element" means that content elements are related to each other. In an embodiment, content elements are indirectly linked by navigation control data. Of course, this is a concept including a case where direct linking is performed using HTML language, XML language, or the like.

[0100] The "content element list" is a list of contents constituting one set of contents. In the embodiment, this is VET_DII.

The "recording medium on which the program is recorded" means
A recording medium such as a ROM, a RAM, a flexible disk, a CD-ROM, a memory card, and a hard disk recording a program. Not only a recording medium such as a hard disk, which is connected to a CPU to directly execute a recorded program, but a CD-RO in which a program to be executed once installed in the hard disk or the like is recorded
This is a concept including a recording medium such as M. Further, the programs mentioned here include not only directly executable programs but also source format programs, compressed programs, encrypted programs, and the like.

[0102]

BEST MODE FOR CARRYING OUT THE INVENTION 1. First Embodiment 1.1. Outline of Technology for Realizing Interactive Broadcasting The inventors have already invented a system for realizing interactiveness with viewers in digital broadcasting. (Japanese Patent Application No. 9-212937). In the present invention, presentation information (content elements) used as a background image or a still image, image data such as a button for prompting a user's interactive operation, contents of an action executed in response to a user's remote control operation, etc. The navigation information containing the is repeatedly multiplexed and transmitted in the transport stream. In the receiving device, the presentation information and the navigation information selected by the user are selected by a transport stream decoder (TS decoder) and output, thereby realizing interactivity.

Also, in this system, a plurality of content elements are sent by using an element stream (see ES in FIG. 3) for transmitting a continuous image or audio as a series. As a result, it is possible to display a full-color image without requiring an extra memory.

Hereinafter, element streams (see ES in FIG. 3)
An outline of a technique for transmitting a plurality of content elements will be described using, and then an outline of a technique for realizing interactive broadcasting will be described. After that, the digital broadcasting system according to the embodiment of the present invention will be described in detail based on these.

1.1.1 Technique for Transmitting Plural Content Elements Using Element Stream FIG. 8 shows a configuration for multiplexing plural content elements using element streams. Here, a case where still images VE1 to VE6 are used as content elements will be described. In FIG. 8, the other control data NIT, PAT, etc. shown in FIG. 3 are omitted. In addition, in FIG. 3, one service includes two element streams ES.
Although it is composed of (Video) 1 and ES (Audio) 1, in the example of FIG.
E1, VE2, and VE3 form one service.

The still image information identification tables VET1 to VET16, which are extraction control data, contain element streams VE1 and VE1.
Still images VE1 to VE being flowed in VE2 and VE3
This is for specifying the number 6. Element stream VE
1 and VE2 and VE3 are originally premised on that a continuous image or sound is played as a series, and it is not designed to extract a specific still image from them. Therefore, here, the still image information identification table VET
1 to VET6 allow each still image, which is a content element, to be taken out.

Still images VE1 and VE4 are streamed in the video element stream VE1. Still images VE1 and VE4
Is composed of MPEG-I frames (data that can be independently reproduced as a still image). Similarly, still images VE2 and VE5 are sent to the video element stream VE2, and still images VE are sent to the video element stream VE3.
3, VE6 is flowing. These 1 set of still images VE1
As to VE6, the same one is repeatedly sent at the repetition cycle T.

Still image information identification tables VET1 to VET
6 is transmitted as control data in the private section. Still image information identification tables VET1 to VET6
Correspond to still images VE1 to VET6, respectively.

FIG. 9 shows the contents of the still picture information identification table VET1 associated with the still picture VE1. table_id
In _extetension, the identifier (VE_id) of the associated still image VE1 is described. Here, "0x00
01 ”, that is, VE_id = 1. First_pts describes the start time of the still image VE1 in the video element stream, and last_pts describes the end time of the still image VE1 in the video element stream. Since the still image is targeted here, the start time and the end time are the same, and the other still image information identification tables VET2 to VET6 have the same structure.
When specifying a moving image or sound, the start time and end time of the moving image or sound may be described.

In the video element stream, the time information (P
A CR (Program Clock Reference) is associated and sent. Therefore, as described above, the still image can be specified and taken out by describing the start time and the end time in the still image information identification tables VET1 to VET6.

1.1.2 Technology for Realizing Interactive Broadcasting Next, an outline of a mechanism for realizing interactive operation will be described with reference to FIGS. 10 to 13. FIG. 10 shows a screen displayed on the display of the receiving device. For example, it is assumed that the display shown in FIG. 10B is currently displayed. In this state, the viewer can
When the up arrow button 80 (see FIG. 11a) is pressed, the state shown in FIG. 10A is obtained. In other words, according to the button operation, from the state where "Osaka" is selected (the state with diagonal lines),
"Tokyo" changes to the selected state. Furthermore, FIG.
When the enter button 84 of the remote controller 78 is pressed in the state of A,
The state shown in FIG. That is, the weather forecast for Tokyo is displayed.

FIG. 11 shows a transport stream used to realize such an interactive broadcast. The still image VE1 is the image shown in FIG. 10A excluding the "Tokyo" and "Osaka" buttons. The still image VE2 is shown in FIG.
This is an image excluding the "Tokyo" and "Osaka" buttons in the image shown in 0B. The still image VE7 is the image shown in FIG. 10C excluding the "return" button. Still image VE1
The still image information identification tables VET1 to VET20 are transmitted corresponding to each VE20. Furthermore, navigation information tables NVT1 and NVT2, which are navigation control data for interactive operation,
0 is also transmitted.

These one set of still images VE1 to VE20,
A set of still image information identification tables VET1 to VET20,
One set of navigation information tables NVT1 to NVT2
In 0, the same content is repeatedly transmitted in the repetition cycle T.

The navigation information table N is shown in FIG.
The contents of VT1 are shown. FIG. 13 shows the contents of the navigation information table NVT2. In the navigation information table NVT1 in FIG. 12, the Object Definition Table
The description of 521 defines the buttons 60 and 62 of FIG. 10A.

Index ”of Object Definition Table 521
In the 0 "row, the coordinates X and Y are" 400 "and" 300 ".
Is described to indicate that a button should be displayed at this position. The Normal Bitmap shows the index of the display data in the normal state (not selected). According to this index, in the “Bitmap Table”
0 ”Bitmap (“ Tokyo ”with no diagonal lines)
Button) is selected and displayed as a non-selected state. The Forcused Bitmap shows the index of the display data in the selected state. According to this index, the bitmap of “1” in the Bitmap Table (the “Tokyo” button with diagonal lines) is selected and displayed as the selected state. Furthermore, the handler describes the index of the Handler that is executed when the enter button is pressed while this button is in the selected state. Handle
The contents of r are described in the Handler Definition Table.

“Index of Object Definition Table 521”
In the line "1", the button 62 is described in the same manner as above.

Such a navigation information table N
Using VT, the receiving device operates as follows.

The state shown in FIG. 10A is the Object Difinition Ta.
The button of index = 0 of ble 521 is displayed in the selected state, and the other buttons are displayed in the non-selected state. That is, the button 60 "Tokyo" is displayed in a selected state, and the button 62 "Osaka" is displayed in a non-selected state. In the initial state, the button with index = 0 is set to the selected state and the other buttons are set to the non-selected state.

When the down button 82 of the remote controller 78 is pressed in this state, the index of the selected button is incremented by one. That is, the button with index = 1 is selected. As a result, the screen display becomes as shown in FIG. 10B. That is, the button 60 becomes the non-selected state "Tokyo" and the button 62 becomes the selected state "Osaka".

Next, in the state of FIG. 10B, when the upward button 80 is pressed, the index of the selected button is decreased by one. As a result, the screen display is as shown in FIG. 10A. That is, the button 60 becomes the selected state "Tokyo" and the button 62 becomes the non-selected state "Osaka".

In the state of FIG. 10A, that is, index =
With the 0 button selected, the enter button 84
When is pressed, the Handl of Object Definition Table 521
Get index = 0 of the handler to be executed from the er column. Next, execute the script described in the line of index = 0 from the Handler Definition Table. Here, goto c
Execute ontents (index 0). goto contents () is H
It is an instruction that means to switch to the content that matches the index shown in the yperlink Table. Therefore, here, switching to the content indicated by the first row (index = 0) of the Hyperlink Table is performed.

In the first line (index = 0) of Hyperlink Table,
It is described that the still image information table is switched to VET7 and the navigation information table is switched to NVT2. As a result, the receiving apparatus selects the still image information table VET7 from the repeatedly transmitted still image information table.
To get. Further, based on this, the still image VE7 repeatedly sent is acquired and displayed. In this way, the screen as shown in FIG. 10C is displayed. Also,
The navigation information table NVT2 (see FIG. 13) is acquired from the navigation information table repeatedly sent. This navigation information table NV
Based on T2, the button 64 is displayed at the lower right of the screen.
In this way, in the state of FIG. 10A, the screen display of FIG. 10C can be changed in response to the determination button being pressed.

Incidentally, in the state of FIG. 10C, the enter button 80
When is pressed, the display state of FIG. 10A is restored based on the navigation information table NVT2. In this way, interactive broadcasting is realized.

1.2. Digital Broadcasting System Next, a digital broadcasting system according to an embodiment of the present invention will be described in detail. In this embodiment, the interactive broadcasting described above is quickly recorded and reproduced on the receiving device side.

1.2.1 Digital Broadcast Transmitting Apparatus FIG. 14 shows a digital broadcast transmitting apparatus 200 according to an embodiment of the present invention. This transmission device 200 includes a program data storage unit 210, a program information management unit 220, a system information generation unit 230, a data transmission control unit 240, a multiplexing unit 250, and a transmission unit 260.

The program data storage unit 210 stores data of the contents of the broadcast program itself such as a video element stream of still images constituting multimedia contents, navigation information, a video element stream used for normal broadcasting, and an audio element stream. is doing.

The program information management unit 220 stores and manages the broadcast schedule of programs, the outline of each program, and the link information to the program data in the corresponding program data storage unit 210.

The system information generation unit 230, when transmitting the program data, controls data NIT (Network Information Tabl) to be multiplexed in the MPEG-2 transport stream according to the information of the program information management unit 220.
e), EIT (Event Information Table), SDT (Service
SI data such as Description Table) and PAT (Prog
PSI data such as ramAssociation Table) and PMT (Program Map Table), and a PCR stream that is time information are generated.

The multiplexing section 250 includes a data transmission control section 24.
In accordance with the instruction from 0, the table data generated by the system information generation unit 230 and the program data storage unit 210
Content data stored in the
2 Generate a transport stream.

The data transmission control unit 240 instructs the system information generation unit 230 to create table data according to the broadcast schedule in the program information management unit 220, and at the same time, returns the required content data from the program data storage unit 210. To the multiplexing unit 250,
Based on the program data and the system information generated by the system information generating unit 230, an instruction is given to multiplex the MPEG-2 transport stream, and the transmitting unit 260 causes the transmitting unit 260 to generate the MPEG-2 transport stream. Send the stream.

(Structure of MPEG-2 Transport Stream) FIG. 11 is a diagram showing an MPEG-structure created and transmitted by the digital broadcast transmitter 200 in the present embodiment.
2 is a diagram showing a configuration example of a two transport stream. This transport stream includes a still picture information identification table VET and a video elementary stream VE.
1 to VE10, navigation information table NVT, N
IT, PAT, PMT, SDT, EIT and PCR are multiplexed. Hereinafter, the contents included in this transport stream will be described in detail.

(Navigation Information Table NVT) Navigation Information Table NVT (Navigation Informat)
Ion Table) is table data in the private section format of the MPEG2 system that includes image data such as buttons for prompting the user's interactive operation and navigation information composed of actions to be executed in response to the user's operation in the data section. Is. Each piece of navigation information is identified by a unique ID (NE_id).

FIG. 12 shows an example of the contents of NVT. A value (0x90) peculiar to NVT is added to the table_id field of the private section.
A value matching the NE_id is set in the id_extension field.

As the contents of the data part of the NVT, an object definition table shown in tabular form (Object Definition Table)
, Handler Definition Table, Hyperlink Table, Bitmap Table
(Bitmap Table) is included.

The object definition table shows, for each index number, information such as a type (type) of a graphic object such as a button displayed on the display screen and attributes. An index number starting from 0 is shown in the "index" column. `` Type (typ
The e) ”column indicates the type of graphics object. In the "X" and "Y" columns, the X and Y coordinate values of the display reference position on the display screen are written. "handler
The (Handler) column shows the index number of the handler that is executed when the object indicated by the user is selected by the digital broadcast receiving apparatus 300.
The “Normal Bitmap” column describes the index number of the bitmap displayed when each object is in the non-focused state. On the other hand, in the “Focused Bitmap” column, the index number of the bitmap displayed when each object is in the focused state is described. Here, the focus state means a state in which the displayed object can be selected, and the non-focus state means a state in which the object is only displayed.
For example, the Object Definition Table 52 in FIG.
In the row of the index number “0” of 1, the type is displayed as a button at the position of X = 400, Y = 300, and when selected, the bitmap of the index number “0” is This indicates that the bitmap with the number “1” is displayed.

The handler definition table shows a script that describes the behavior of the data broadcast receiving apparatus for a user operation for each index number. For example, a script "goto_contents (index 0)" is described in the row of the index number "0" of the Handler Definition Table 522 in FIG. This script instructs switching to the content indicated by the hyperlink with index number 0. It should be noted that the script may describe, for example, the position of the graphic object or one for switching between display and non-display.

The hyperlink table shows hyperlinks to contents designated for each index number. The content consists of VE_id that makes up the content and N
It is specified by the E_id pair. For example, Hyperl in FIG.
The row with index number “0” in ink Table 523 is VE_
A hyperlink to the content composed of a set of presentation information with id = 7 and navigation information with NE_id = 2 is shown.

The bitmap table shows the bitmap data identified by the index number. For example, the row of the index number “1” of the Bitmap Table 524 in FIG. 12 contains the content of the bitmap data displayed when the graphic object with the index 0 is in the focus state.

Note that, in the present embodiment, the NVT is described as one section in the example of FIG. 12, but there is no problem even if it spans multiple sections, such as when the amount of bitmap data is large.

(Download Info Indicati on NVT
on) In the embodiment of the present invention, as navigation information included in one program (program), in addition to NVT, information indicating how many NVTs are included in the program is streamed as a navigation list. Are multiplexed into.

In the present embodiment, as one of the means, DSM-CC (Digital Storage Media Command & Control)
Standard (ISO / IEC13818-6) Chapter 7 User
Download Info Indication stipulated by -to-Network
Private section format data, which is identified by the same PID as NVT, is multiplexed based on the above format. Hereinafter, this data will be referred to as NVT_DII.

FIG. 15 shows the contents of NVT_DII. Each piece of navigation information included in the program is associated with one module in DSM-CC, and the NE_id value is set in the field corresponding to the module ID. In addition, the size (number of bytes) of the navigation information is described in the module_size part. Also,
number_of_modules indicates the total number of navigation information included in the program. Also, as the header information of the private section, ta indicating that it is NVT_DII
ble_id = 0x81 is specified. table_id_extension is unused and is set to 0x0000. The example of FIG. 6 shows that 20 pieces of navigation information are included in the program, and the value of NE_id and the size (number of bytes) of NVT for each piece of navigation information are described.

(VET) FIG. 9 shows an example of the contents of VET. As the content of the header part, a value unique to VET (0x90) is stored in the table_id field as table_id_e.
A value that matches the VE_id of xtension is added. table_id_ex
It can be seen from the value of tension that the VET is VE_id = 0x0001.

The still image data identified by VE_id = 1 of VET is a set of information "component_tag" and "stream_id" which uniquely identifies the video elementary stream VE1 multiplexed as an MPEG-I frame.
Of the PTS (Present at) which is given to each frame of the video elementary stream as information indicating from which part of the video elementary stream to which part shows still image data of VE_id = 1.
ion time stamp) related to "first_PTS" and "last
_PTS ”is included. This is a PES (Packetized Elem) that is a packet that constitutes a video elementary stream.
Only the data in which the value written in the PTS field of the (entry stream) is within the range of “first_PTS” and “last_PTS” represents the desired still image data. In the present embodiment in which desired still image data corresponds to an MPEG-I frame, first_PTS = last_PTS = <PTS attached to corresponding MPEG-1 frame>.

The "component_tag" is a value used to indirectly refer to the PID, and the correspondence relationship with the PID is given in the dictated PMT. Also,
The “stream_id” is a value specified in the last 8 bits of the 32-bit packet start code of the system header of the transport packet of the MPEG system, and is used to distinguish the streams. In the case of video as the value of the stream ID, a value in the range of "0xe0" to "0xef" is designated.

Therefore, the video elementary stream is uniquely specified by the PID referenced from the "component_tag" and the "stream_id".

"First_PTS" is the time at which the first frame of the corresponding video data is reproduced, which is 1 / 90,000.
Represents the start playback time information in seconds, "last_PTS"
Represents reproduction end time information when the last frame of the corresponding video data is reproduced. If the corresponding image data is a still image (MPEG-I frame), first_PTS = last_P
Become TS.

(VET_Download Info Indication) Regarding VET, in addition to VET itself, V
Information about how many ETs are included in the stream. In other words, it also indicates how much still image data is included in the program. In the present embodiment, as one of the means, NVT_DI
Similar to I, DSM-CCDownload Info Indication
Are multiplexed with private section format data identified by the same PID as VET. Hereinafter, this data is referred to as VET_DII.

FIG. 16 shows the contents of VET_DII. Each still image data included in the program is
Corresponding to one module in DSM-CC, mo
VE_id is set in the field corresponding to duleID. The size (byte length) of the still image data is described in the module_size part. Also, number_of_modules is
Indicates the total number of still image data included in the program. Also, as the header information of the private section, VET_D
Table_id = 0x91 indicating II is specified. tab
le_id_extension is unused and is set to 0x0000.

In the example of FIG. 16, the still picture data is 2 during the program.
It indicates that 0 pieces are included, and the value of VE_id and the size (number of bytes) of the still picture data are described for each still picture data.

(Video Elementary Stream VE) In FIG. 11, VE1 to VE10 denote video elementary streams composed of only MPEG-I frames.

(NIT, SDT, EIT) FIG.
TS 300 468 (DVB-SI) standard, ISO /
According to IEC13818-1 (MPEG2 system), NIT (Network Information Table), SDT (Se
rvice Description Table), EIT (Event Information
Table) shows the structure.

The NIT records physical information and the like regarding the transmission path for each transport stream transmitted from the network identified by the specific network. FIG. 17A is an example of NIT. network_id is "0
original_n in the network identified by "x0001"
It indicates that a transport stream identified by etwork_id of "0x0001" and transport_stream_id of "0x0001" is distributed, and the specifications regarding the frequency and the modulation method thereof are represented by "data transmission specifications".

[0154] The SDT records information such as a service name for each service included in a specific transport stream. FIG. 17B is an example of SDT. transpor
In the transport stream identified by t_stream_id "0x0001", service_id "0x0001"
It indicates that the service identified by is included, and the information such as the service name is represented by “information such as service name”.

The EIT records information about the event name, start time, end time, etc. for each event included in a specific service. FIG. 17C is an example of EIT. In the service identified by service_id “0x0001”, an event identified by event_id “0x0001” is included, and information such as the event name is “ev
information such as ent name ”.

(PAT, PMT) FIG. 18 shows ISO / I
According to EC 13818-1 (MPEG2 system), PAT (Program Association Table), PMT (Pr
It shows the contents of the ogram map table).

The PAT records PID information of PMT (program map table) for each program included in a specific transport stream. FIG. 18A shows
It is PAT's Rei. transport_stream_id is "0x0
In the transport stream identified by "001",
Program_no includes the program of "0x0001",
It indicates that the PID of the PMT is “0x0080”. program_no matches service_id, and the program corresponds to the event.

FIG. 18B shows an example of PMT. PM of this figure
In T, the identifier indicating that this table is a PMT is table_id = 0x01, and "program_number"
Matches the value “0x0001” of “service_id”.
“PCR_PID” is a value that represents the PID of a packet that includes clock information (PCR) that serves as a reference when combining this program. In addition to these, PM
During T, DVX_Program_descriptor, NE_component_des
criptor, VE_Information_component_descriptor, stre
Includes am_identifier_descriptorexpiration_descriptor.

FIG. 19 shows these Desc included in the PMT.
It shows the contents of riptor. FIG. 19A shows DVX_Pr.
This shows the contents of ogram_descriptor. This desc
The presence of riptor indicates that this program is an interactively operable program according to the embodiment of the present invention, and includes entry_VE_id and entry_NE_id as information for specifying the set of presentation information and navigation information to be played first. Has been.

FIG. 19B shows the contents of NE_component_descriptor. Due to the existence of this descriptor, the component that includes NVT in this program
Is present.

FIG. 19C shows VE_Information_component_d.
It shows the contents of the escriptor. This descriptor
VET is included in this program due to the existence of
Indicates that component exists.

FIG. 19D shows stream_identifier_descript.
It shows the contents of or. By this descriptor, PID and compon assigned to the component
The correspondence of ent_tag is shown.

FIG. 19E shows the contents of Expiration_descriptor. This descriptor indicates the expiration date during which the program can be reproduced when the program is stored.
The example of FIG. 19E indicates that reproduction is possible until 23:59:59 on September 10, 1999.

1.2.2 Digital Broadcast Receiving Apparatus FIG. 20 shows an embodiment of the digital broadcast receiving apparatus 300 that receives and restores the transport stream described above.

This digital broadcast receiving apparatus 300 has a receiving section 310, a restoring section 440, and a program data storage section 370.
And an operation reception unit 410. In addition, the restoration unit 44
0 is a TS decoder unit 320 and an AV decoder unit 330.
A reception control unit 350 and a reproduction control unit 360.

The output of the digital broadcast receiving apparatus 300 is given to the audio output section 390 and the display section 400. In this embodiment, the audio output unit 390 and the display unit 40
Although the digital broadcast receiving apparatus not including 0 is shown, the digital broadcast receiving apparatus may be configured to include the audio output unit 390 and the display unit 400.

The digital broadcast receiving apparatus 300 has three modes of reception mode, recording mode and reproduction mode. The operation receiving unit 410 receives a command from the remote controller of the viewer to switch between the modes.

(Receiving / Reproducing Mode) In the receiving / reproducing mode, the receiving section 310 selectively receives the transmitted transport trim. This transport stream includes a transport decoder unit (TS decoder unit) 3
Given to 20. Under the control of the reception control unit 350, the TS decoder unit 320 separates packets of video and audio data related to a desired service from this transport stream, and supplies the separated packets to the AV decoder unit 330. The AV decoder section 330 decompresses (decompresses) the compressed video and audio data, and outputs the decompressed video and audio data to the audio output section 390.
It is given to the display unit 400 and is output as a sound or an image.

Further, when the interactive broadcasting is received, the reception control section 350 separates and obtains the navigation information table NVT, the still image VE and the like, which are necessary according to the operation input, by the TS decoder 320.
As a result, the contents are switched according to the operation command as shown in FIG.

(Recording Mode) In the recording mode, one set of still images VE and one set of navigation data NVT that are repeatedly sent are stored in the program data storage unit 370. The reception control unit 350 controls the TS decoder 320 to separately acquire the still image information table VET. Based on this, the TS decoder 320 is further controlled,
The still image is separated and given to the AV decoder unit 330. In the recording mode, the output of the AV decoder section 330 is stored in the program data storage section 370. This is performed for all still images. In this way, the set of decompressed still images can be stored in the program data storage unit 370.

Further, the reception control section 350 controls the TS decoder 320 to control the navigation information table NVT.
Get separated. This is performed for all navigation information tables NVT. In this way, a set of navigation information tables is stored in the program data storage unit 370.
Can be stored in.

(Recorded Content Playback Mode) In the recorded content playback mode, the playback controller 36
Based on the control of 0, the processing shown in FIG. 10 is performed by the set of still images and the set of navigation information tables stored in the program data storage unit 370 in response to the instruction of the operator. In this playback mode, T
The AV decoder 33 is separated by the S decoder 320.
The still image expanded by 0 is used as the program data storage unit 37.
Since it is acquired from 0 and processed, the response to the operation by the viewer is quick.

(Hardware Configuration of Digital Broadcast Receiving Apparatus) FIG. 21 shows a hardware configuration when the receiving apparatus of FIG. 20 is realized by using a CPU. In this embodiment, the tuner 310 corresponds to the receiving unit 310. In addition,
The receiving unit may be for receiving a cable broadcast. A signal receiving unit 410 for receiving a signal from a remote controller or the like corresponds to the operation receiving unit 410. The operation accepting unit may be an operation button or the like provided on the apparatus body. The ROM 420 includes a CPU 450, a reception process,
A program for executing recording processing and reproduction processing is recorded. The memory 340 is rewritable and is used for temporarily recording information. The hard disk 370 has a program data storage unit 37.
Corresponds to 0.

First, the setting of the filter condition of the TS decoder section 320 will be described. TS decoder unit 3
20 has a filter condition storage unit 321 that stores a filter condition set by the reception CPU 450, and image data having a designated identifier in the transport stream output from the reception unit 310 according to the filter condition, Alternatively, only the audio data is separated and A
Output to the V decoder unit 330. Further, the table data having the specified identifier is separated and output to the area reserved in the received data storage unit 340 or the program data storage unit 370 according to the identifier. 1106 The PCR (reference clock information) of the designated identifier is separated and output to the AV decoder unit 330. In addition, the filter condition storage unit 3
21 can store a plurality of filter conditions at the same time, and the TS decoder unit 320 can perform a plurality of separation processes in parallel.

FIG. 25 is a diagram showing an example of a filter condition table stored in the filter condition storage unit 321. Each row of the filter condition table 2201 represents one filter condition. The “filter identification number” 1101 is a number that identifies each filter condition. Row "START / STOP" 1
Reference numeral 102 indicates “START” when setting each filter condition to the start state, and “STO” when setting each stop condition.
P ”is set. The TS decoder unit 123 performs the filtering process based on the filter condition in the start state, and does not perform the separation based on the filter condition in the stop state. Column "PI
In D ”1103, the value of the PID of the data separated by each filter condition is set. The column “stream_id” 1104 sets the value of stream_id of the data separated by each filter condition. In the column “table_id” 1105, the value of “table_id” of the data separated by each filter condition is set. Similarly, in the column “table_id_extension” 1106, the value of table_id_extension of the data separated by each filter condition is set. Column "PID" 2204, column "stream_id" 22
05, column "table_id", column "table_id_extension" 22
When the value "-" is set in 06, it means that there is no condition, that is, the value of the identifier is separated. In the “output destination” 2207, the output destination for outputting the separated data is set. The row corresponding to the filter identification number “0” of the filter condition table 1100 represents the filter condition of the image data. The AV decoder unit 330 is designated as the “output destination” 1107, and the column “table_id” 1105 and the column “table_id_extension” 1106 cannot be set. The column “PID” 1103 and the column “stream_i
In “d” 1104, the PID and the value of stream_id of the image data to be separated by the TS decoder unit 320 are set.

The line corresponding to the filter identification number "1" is
The filter conditions of the stream correspondence table VET are shown. The VET storage unit 342 is set in the “output destination” 1107, and the column “stream_id” 1104 cannot be set. Column "PID" 1103 and column "table_id" 1105
In the column and “table_id_extension” 1106, the PID of the VET to be separated by the TS decoder unit 320,
Values of table_id and table_id_extension are specified.

The line corresponding to the filter identification number "2" is
Shows the filtering condition for navigation information. "Output destination"
1107 includes a navigation information table storage unit 372.
Is set, and the column “stream_id” 1104 cannot be set. Retsu "PID" 1103 and column "ta
ble_id ”1105 and column“ table_id_extension ”11
In 06, the PID of the navigation information table to be separated by the TS decoder unit 320, table_id, and table_id_e
The value of xtension is specified.

The line corresponding to the filter identification number "2" is
Shows the filtering condition for navigation information. "Output destination"
1107 includes a navigation information table storage unit 372.
Is set, and the column “stream_id” 1104 cannot be set. The column "PID" 1103 and the column "tabl
e_id ”1105 and column“ table_id_extension ”110
6, PID of the navigation information table to be separated by the TS decoder unit 320, table_id, table_id_ext
The value of ension is specified.

The line corresponding to the filter identification number "3" is
The filter condition of VET_DII is shown. "Output destination" 11
The DII storage unit 341 is set in 07, and the column "st
"ream_id" 1104 cannot be set. The column “table_id_extension” 1106 is not set as a filter condition. The column "PID" 1103 and the column "table_id_e
In “xtension” 1106, the PID of VET_DII to be separated by the TS decoder unit 320 and the value of table_id are designated.

The line corresponding to the filter identification number "4" is
The filter condition of NVT_DII is shown. "Output destination" 11
The DII storage unit 341 is set in 07, and the column "st
"ream_id" 1104 cannot be set. The column “table_id_extension” 1106 is not set as a filter condition. The column "PID" 1103 and the column "table_id_e
In “xtension” 1106, the PID of NVT_DII to be separated by the TS decoder unit 320 and the value of table_id are designated.

In addition, the column "START /
“STOP” 1102 includes “START” or “ST”.
“OP” is set by the CPU 450 and is set to a start state or a stop state.

In addition to these, the filter condition storage unit 321 also stores NIT, SDT, EIT, PAT, PMT.
It stores a system information table such as, and a filter condition (not shown) for PCR (reference clock information).

The TS decoder section 320 separates, from the transport stream 1801 shown in FIG. 11, those that match the filter conditions set in the filter condition table of FIG. 25, and the field designated as the output destination. And the CPU 450 is notified.

The AV decoder section 330 has a clock section (not shown). This clock unit is the TS decoder unit 32.
A correct reference time is set according to the value of PCR (reference clock information) output from 0, and the time which is the reference for decoding the image data and the audio data while synchronizing them correctly is counted. Also, the AV decoder unit 330 is
According to the instruction from the PU 450, the image data and the audio data are decoded for each decoding unit, the clock unit outputs them in synchronization with each other, and the CPU 450 is notified of the successful decoding. Also, the AV decoder unit 330 is configured to store the image data (MPEG-) stored in the program data storage unit 370.
(1 frame) data and audio data are output in synchronization with the clock unit, and the CPU 450 is notified of successful decoding.

FIG. 22 is a flow chart showing the operation procedure of the digital broadcast receiving device recorded in the ROM 420. First, a predetermined service and event are selected by the digital broadcast receiver (step S120).
1) If an instruction to store the program data specified by the selected service and event is given, (step S
1202), program accumulation processing is performed (step S1).
240).

[0186] In step S1202, if it is not a program data accumulation instruction but a reproduction designation of a stored program, or if a program reproduction instruction and a designated program is already accumulated (step S1202) ,
The accumulated program data is reproduced (step S1).
220).

[0187] In step S1203, if the instruction is to reproduce the program and the designated program is not accumulated, the program is received and reproduced (step S123).
0). A method of determining whether or not the designated program has been accumulated will be described later.

The program accumulation process in step S1240, the accumulated program reproduction process in step S1220, or the program reception / reproduction process in step S1230 is performed. As a result of the input process from the user in the process, a new service is created. , Event is selected to receive or reproduce or store the program, step S12
The processing from 02 is repeated.

First, the details of the program receiving / reproducing process in step S1230 will be described. FIG. 23 is a flowchart showing the operation of selecting a program, selecting program data from the broadcast, receiving and reproducing the program data.

First, when a program is selected, the variable cur_orig
inal_network_id and variable cur_transport_stream_id are not set yet, or the service containing the selected program is sent. original_netw
ork_id and variable cur_original_network_id are transport_str
When the variable cur_transport_stream_id does not match eam_id, the CPU 450 performs the following process. ISO1381 used in general satellite digital broadcasting receivers
8-1 (MPEG2 system) standard, and ETS 3
00 468 (DVB-SI) standard, refer to the system information table according to the procedure,
Switch to the transport stream identified by al_network_id and transport_stream_id and perform the variable cur_
original_network_id and variable cur_transport_stream_
The value of id is updated (step S1301).

Next, the ISO13818-1 (MPEG2 system) standard and ETS 300 468 (DVB-) used in general satellite digital broadcasting receivers are used.
The system information table is referred to according to the procedure defined in the SI) standard, the tube 310 is instructed to receive the transport stream, and the TS decoder unit 320 is instructed to separate the PMT corresponding to the selected event. Next, the CPU 450 refers to the PMT written in the system information table storage unit 343 of the memory 340 by the TS decoder unit 320 to obtain the PCR identifier, and T
It is set in the filter condition storage unit 321 of the S decoder unit 320 (step S1302).

Next, the CPU 450 sets the variable cur_original.
original_networ of the selected event in _network_id
Set k_id, set variable cur \ transport_stream_id to transport_stream_id of selected event, and set variable c
Specify the ut_VE_service_id and the service_id of the selected service in the variable cur_NE_service_id, and set the variable cur_VE_event
_id and the variable cur_NE_event_id
Set event_id and clear variable cur_VE_id and variable cur_NE_id. These variables represent information on the identifier of the content currently being reproduced (step S1301).

Next, the CPU 450 causes the step S130.
P in the system information table storage unit 343 acquired in 2
Refer to DVX_program_descriptor in MT and refer to variable ne
w_VE_id, variable new_NE_id, entry_VE_id and entry_NE_
The value of id is set (step S1304).

Next, the CPU 450 executes the variable ne obtained in step S1304 as the content switching processing.
The switching processing of the presentation information and the navigation information based on the values of w_VE_id and the variable new_NE_id is performed in parallel (step S1305). Details of the switching process will be described later.

Next, the CPU 450 makes the signal receiving section 410
It waits for the signal input of the selection operation from the user notified from (step S1306).

When the signal is input from the signal receiving unit 410, the CPU 450 processes the user input signal. Details of the processing of the user input signal will be described later (step S1307).

Next, the CPU 450 carries out step S1307.
If it is determined as a result of the input processing of No. 1 that the content switching is not designated (step S1308), the process returns to step S1306 to wait for an input signal from the user.

When content switching is designated,
It is determined whether the service or event is changed at the same time (step S1309), and if the change is not made,
The process returns to step S1305 to perform content switching processing. When the service or event is changed, the program reception / reproduction processing is terminated, and step S in FIG.
Return to 1202.

(Presentation Information Switching Process) Next, the details of the presentation information (still image data) switching process in the content switching process in step S1305 will be described with reference to the flowchart in FIG.

The receiver 450 receives the variables new_VE_id and cur_VE_.
It is determined whether the value of id is the same (step S15).
01), the process ends if affirmative. In the initial state when the program is selected, the variable new_VE_id is entry_VE_id and cur_VE_id is not set.

The CPU 450 sets the variable cur_VE_id to the variable new_V.
The value of E_id is set (step S1502).

The CPU 450 refers to the PMT shown in FIG. 9B in the system table storage unit 343 and sets VE_Info.
The PID of the component to which rmation_Component_Descriptor is attached = 0x0083 is acquired, and the VET is represented.
ble_id = 0x90 and set the value of variable new_VE_id to table_id_extensi
Set it as a filter condition as on, and set this filter condition as the start state. (Step S1503) For the purpose of explanation, here, new_VE_id = 0x0001.

FIG. 26 shows filtering conditions set and stored in the filter condition storage unit 321 during reception and reproduction of contents. Of the filter conditions shown in FIG. 26, the filter condition with the filter identification number “1” is the condition relating to the VET filter,
"PID" = 0x0083 "table_id = 0x90""table_i"
Set "d_extension = 0x0001" as a filter condition,
In the “output destination”, the VET storage unit 342 is set as the output destination of the VET satisfying the filter condition. Other filter conditions in FIG. 26 will be described later.

The TS decoder section 320 separates the VET corresponding to the value of the variable new_VE_id from the transport stream according to the filter condition, stores it in the VET storage section 342, and notifies the CPU 450 (step S150).
4).

Next, the CPU 450 proceeds to step S1504.
Interprets the VET stored in the VET storage unit 322 with
Set the value of "first_pts" to the variable firstPTS and the value of "last_pts" to the variable lastPTS, and set "stream_id" and "compo
The value of “nent_tag” is acquired (step S1505).

Next, the CPU 450 causes the flag "fi" indicating whether or not the decoding of the first frame of the image data has succeeded.
"rst_flag" is initialized to "0" (step S150).
6).

Next, the CPU 450 causes the variables cur_VE_service_id and cur_VE_event_ in the system table storage unit 343.
The PMT corresponding to the event identified by id is referenced, the type of data to be transmitted is image data, and "component_ta
The value of "g" is equal to the value of "component_tag" acquired in S2612, and PID = 0x0084 of the component to which the stream-identifier_descriptor is attached is acquired, and S26
The value 0xe5 of the “stream_id” acquired in 12 is set to the filter condition of the image data in the filter condition storage unit 321, and this filter condition is set to the start state (step S1507).

The condition of the filter identification number "0" in FIG. 26 is the filter condition for image data.

[0209] The TS decoder section 320 separates the image data according to the filter condition and outputs it to the AV decoder section 330. The AV decoder section 330 includes the TS decoder section 32.
Decoding (decompression / decompression of compression) of the video elementary stream output from 0 is started (step S150).
8).

The CPU 450 refers to the value of the clock section of the AV decoder section 330 to obtain the current time in units of 1/9000 second and compares it with the value of the variable firstPTS. If they are equal or the current time value is large, proceed to S2626,
In other cases, the same processing is repeated until the current time reaches the value of firstPTS (step S1509).

When the current time reaches the value of firstPTS, the CPU 450 outputs the image data output from the AV decoder section to the video synthesizing section 380 (step S151).
0).

At the same time, the CPU 450 sets the current time to A
900 by referring to the value of the clock section of the V decoder section 330
It is continuously obtained in 1/00 second units, compared with the value of the variable lastPTS, and repeatedly compared until it is equal or the value at the current time becomes large (step S1511).

When the value of the current time exceeds the value of the lastPTS value, the CPU 450 stops the output of the image data to the video synthesizing unit and sets the filter condition regarding the image data to the stopped state to perform the decoding processing of the video stream. Is finished (step S1512).

(Navigation Information Switching Process) Next, details of the navigation information switching process in the content switching process of step S1305 of FIG. 23 will be described with reference to the flowchart of FIG.

The CPU 450 uses the ne specified for switching.
It is determined whether or not the values of w_NE_id and cur_NE_id are the same (step S1601), and if affirmative, the process is terminated. However, in the initial state when the program is selected, the variable ne
w_NE_id is entry_NE_id, and cur_NE_id is not set.

The CPU 450 sets new_NE_ to the variable cur_NE_id.
The value of id is set (step S1602).

The CPU 450 refers to the PMT shown in FIG. 18B in the system table storage unit 343 and makes NE_Com
PI of the component with ponent_Descriptor
D_0x0082 is acquired and NVT is represented table_id
= 0x80 and the value of the variable new_NE_id is set as the filter condition as table_id_extension, and this filter condition is set to the start state. (Step S1603) For the purpose of explanation, here, new_NE_id = 0x0001.

Of the filter conditions shown in FIG. 26, the filter condition of the filter identification number "2" is the condition relating to NVT, and "PID" = 0x0082 "table_id = 0x8".
“0” “table_id_extension = 0x0001” is set as a filter condition, and “output destination” is an NV that satisfies the filter condition.
The navigation information storage unit 372 is set as the output destination of T.

The TS decoder section 320 separates the NVT corresponding to the value of the variable new_NE_id from the transport stream according to the filter condition, stores it in the navigation information storage section 372, and notifies it to the CPU 450 (step S1604).

Next, the CPU 450 reproduces the navigation information table NVT acquired in S1604 in the navigation information table storage unit 372 based on the navigation information interpretation program. CPU450 is NVT
Refer to the object definition table inside to get the display coordinates "X", "Y" of the button object, and then "Norm
“Al Bitmap” index value is acquired, the bitmap table is referred to, bitmap data corresponding to the index value is acquired, based on these, graphics information of the button is generated and output to the video compositing unit 380. . The video synthesizing unit 380 superimposes the graphics information on the image data decoded by the AV decoder unit 330, and the display unit 400.
(Step S1605).

A variable cur_focus representing the index value of the button object which is currently selected is initialized to 0 (step 1606). The CPU 450 refers to the object definition table in the navigation information table NVT acquired in S1604 in the navigation information table storage unit 372, and the display coordinates “X” and “Y” of the button object whose index value is equal to the value of the variable cur_focus. Then, the index value of “Focused Bitmap” is acquired, the bitmap table is referenced, the bitmap data corresponding to the index value is acquired, and the variable cu
Graphical information of the button object is generated by converting the bitmap of the button having the index value corresponding to the value of r_focus into the selected bitmap, and the graphic information is output to the video synthesizing unit 38, and the navigation information switching process is terminated (step S1607).

FIG. 10A shows an example of the display output on the display section 400. A button that allows you to select Tokyo or Osaka is overlaid on the still image data that includes a map of Japan. In this example, the button object with the label “Tokyo” is set as the variable cur_focus, and the bitmap data corresponding to the focus state is displayed.

(Processing of Input Signal) Next, step S13.
The processing of the user input signal 07 will be described with reference to the flowchart of FIG.

The CPU 450 determines whether or not the user input received from the signal receiving unit 410 is "up".
If "up", the process proceeds to step S1804, and if not, the process proceeds to step S1802 (step S180).
1).

The CPU 450 sets the value of the variable cur_focus to 1
Reduce. However, when the value of the variable cur_focus is 0, it remains 0 (step S1804).

The CPU 450 refers to the object definition table in the NVT in the navigation information table storage unit 372 to acquire the display coordinates "X" and "Y" of the button object whose index value is equal to the value of the variable cut_focus, Next, obtain the index value of "Focused Bitmap" and refer to the bitmap table to obtain the bitmap data corresponding to the index value.
The bitmap of the button that has the index value corresponding to the value of r_focus is set to the selected bitmap, and similarly, the bitmap of the button that corresponds to the index value that corresponds to the value of the variable cut_focus is changed to the bitmap in the normal state. Then, the graphic information of the button object is generated, and the CPU 450 and the navigation information switching processing are ended. The CPU 450 superimposes the graphics information on the image data decoded by the AV decoder unit 330, displays it on the display unit 400, and ends the user input process (step S1808).

The CPU 450 determines whether or not the user input received from the signal receiving unit 410 is "down".
If it is "down", the process proceeds to step S1805, and if not, the process proceeds to step S1803 (step S180).
2).

The CPU 450 sets the value of the variable cur_focus to 1
To increase. However, if the value of the variable cur_focus is equal to the maximum value of the identifier of the button object in the navigation information table NVT acquired in S2710 in the navigation information table storage unit 133, it is left as it is. Then, the process moves to step S1808 (step S1805). C
The PU 450 determines whether the user input received from the signal receiving unit 410 is “confirmed”. If “determined”, the process proceeds to step S1806, and if not, the user input process ends (step S1803).

The CPU 450 refers to the object definition table in the NVT in the navigation information table storage unit 372, obtains the index value of the handler of the button object whose index value is equal to the value of the variable cur_focus, and refers to the handler definition table. Then, the bytecode instruction is read from the handler corresponding to the index value (step S1806).

If the bytecode instruction is "goto_contents", the process proceeds to step S1809, and if not, the process ends (step S1807).

The index value of the argument of the goto_contents instruction is read from the handler (step S1809).

[0232] The CPU 450 refers to the hyperlink table of the navigation information table and refers to the content identifier VE_i corresponding to the index value read in S1810.
The values of d and NE_id are set to new_VE_id and new_NE_id, respectively. (Step S1810).

The CPU 450 sets the value of the content change flag Contents Changeflg to 1 as a flag indicating that a content switching request has been issued, and terminates the user signal processing (step S1811).

FIG. 10B shows the display when "down" is input by the user. By inputting "bottom", the variable cur_focus is changed to a button object having "Osaka" as a label, and the bitmap data displayed as the button object is changed accordingly.

As described above, according to the procedure described with reference to FIGS. 22 to 28, the reception and reproduction of the program by the digital broadcast receiving apparatus 300 and the switching of the content by the user's input operation are realized.

(Procedure Data Storage Procedure) Step S
Details of the program accumulation processing in 1240 will be described.

First, the contents of the accumulated data management table stored in the program data storage unit 370 will be described. The accumulated data management table is stored as one file associated with one program data.

[0238] The accumulated data management table stores original_network_id, transport_stream_id, service_ of the corresponding program.
It is included under the following directory that is hierarchized using id and event_id, and original_network_id / transport_stre
am_id / service_id / event_id Created as file name "saveinfo".

FIG. 29 shows the accumulated data management table 190.
This is an example of 0. Accumulated data management table 1
900 indicates an accumulation completion flag field 1901 and Expi
A ratio field 1902, an entry_VE_id field 1903, an entry_NE_id field 1904, an image data management table 1905, and a navigation information management table 1906.

[0240] The accumulation completion flag field 1901 is a flag indicating whether or not accumulation of all data included in this program has been completed. True when accumulation is completed, False when not completed yet Is set.

The Expiration field 1902 is a field showing the expiration date of the program corresponding to the accumulated data management table 1900. The Expiration field contains Expiration_descrip in the PMT shown in FIG. 19E.
Expiration value in tor is set.

[0242] The entry_VE_id field 1903 is set with VE_id, which is the presentation information in the content that is reproduced first when the stored program corresponding to the stored data management table 1900 is reproduced. This value is DVX_program_descri in the PMT shown in FIG. 19A.
Matches the value of entry_VE_id in ptor.

The entry_NE_id field 1904 is set with the NE_id which is the navigation information in the content that is first played when playing back the stored program corresponding to the stored data management table 1900. This value is DVX_program_descriptor in the PMT shown in FIG. 19A.
Matches the value of entry_NE_id in.

The image data management table 1905 stores VE_i for each still image data as accumulated information of still image data which is all presentation information included in the program corresponding to the accumulated data management table 1900.
d, the storage position and size in the still image data storage unit 371 when the still image data identified by VE_id has been accumulated, and T when the still image data has been accumulated.
true, a set of storage flags for which False is set when the storage flag has not been stored yet is set.

Similarly, in the navigation information management table 1906, NE_i for each navigation information is stored as accumulated information of all navigation information.
d, the storage position and size in the navigation information storage unit 372 when the navigation information identified by the NE_id has been stored, True when the navigation information has been stored, and False when the navigation information has not yet been stored. A set of accumulation flags for which is set is set.

FIG. 30 is a flow chart showing the detailed procedure of program storage processing.

First, when the user issues a storage instruction, the CPU 450 determines whether or not the selected program has already been stored (step S2001).

It is affirmed that the file has been stored because the file name is original_network_id / transport_stream_id / serv.
An accumulated data management table that matches ice_id / event_id / saveinfo exists in the accumulated data management table storage unit 373, the value of the accumulation completion flag field is True, and the current time is greater than the time specified by Expiration. That was the case before. If it is determined by the above determination that the selected program has been accumulated, the process ends.

When it is determined in step S2001 that the accumulation is not completed, the CPU 450 determines whether or not the accumulation process is currently being performed (step S2001).
2002). This judgment is affirmed because the file name is original_network_id / transport_stream_id / servic.
An accumulated data management table that matches e_id / event_id / saveinfo exists in the accumulated data management table storage unit 373,
In addition, the value of the accumulation completion flag field is False.

If the determination in step S2002 is affirmative, no new processing is performed and the accumulation processing that is currently being continued is continued.

If the determination in step S2002 is negative, the accumulation process is newly started. First, save_servi is set as a variable that indicates the target of the current accumulation process.
Set the selected service_id to ce_id and set the variable saving_
The selected event_id is set in event_id (step S2003).

Next, the file name is original_network_i
d / transport_stream_id / service_id / event_id / saveinfo
A stored data management table that matches the above is created in the stored data management table storage unit 373. Then, the value of the accumulation completion flag is initialized to False (step S200).
4).

Next, the CPU 450 uses the ISO13818-1 used in the general satellite digital broadcast receiving apparatus.
(MPEG2 system) standard, and ETS 300
The system information table is referenced according to the procedure defined by the 468 (DVB-SI) standard, and the specified se
The TS decoder unit 320 is instructed to separate the PMT corresponding to the event identified by rvice_id and event_id.

The TS decoder section 320 uses the designated PMT.
Is separated, written in the system information table storage unit 343 in the control information table management unit 340, and notified to the CPU 450 (step S2005).

The CPU 450 uses the DVX_program_desc in the PMT corresponding to the event identified by saving_service_id and saving_event_id in the system table storage unit 343.
Refer to the entry_VE_id and entry_NE_id values in the riptor, and refer to each value in the accumulated data management table
Set in entry_VE_id field and entry_NE_id field. Also, expiration_descriptor in PMT
The value of Expiration in is stored and set in the Expiration field in the accumulated data management table (step S
2006).

After that, the storage processing relating to the presentation information and the navigation information is performed in parallel (step S2007).

When the storage processing of all the presentation information and navigation information is completed, the storage completion flag is set to True and the storage processing is completed (step S2).
008).

(Presentation Information Accumulation Processing) The details of the presentation information accumulation processing performed in step S2007 will be described below with reference to the flowchart of FIG.

[0259] The CPU 450 refers to the PMT corresponding to the event identified by the variables saving_service_id and saving_event_id in the system table storage unit 134, and VE_Inf
table_indicating VET_DII by acquiring the PID of the component with ormation_Component_Descriptor
id = 0x91, and the filter condition that specifies the DII storage unit 341 as the output destination is set to the TS decoder unit 320 as the start state (step S2201).

FIG. 31 shows the filter conditions set when the program storage process is executed. The filter condition of the filter identification number "3" represents the condition set in step S2201.

Apart from this, the same PID = 0 as above.
The filter condition for designating the VET storage unit is set to the TS decoder unit 320 as an output destination of x0083 and table_id = 0x80 indicating VET. However, unlike when receiving and playing a program, the field of table_id_extension is "-", that is, it is separated regardless of its value.
At the stage of step S2201, this filter condition is set to the stopped state.

In FIG. 32, the filter identification number "1"
The filter condition of is related to VET. "PI
D ”= 0x0083,“ table_id = 0x90 ”,“ table_id_
"extension =-" is set as the filter condition, and the "output destination" is set to the VET storage unit 342 as the output destination of the VET satisfying the filter condition.

The TS decoder section 320 separates VET_DII from the transport stream according to the filter conditions, stores it in the DII storage section 134, and stores it in the CPU 4
50 is notified (step S2202).

The CPU 450 refers to the contents of VET_DII stored in the DII storage unit 341 and initializes the image data management table in the storage data management table stored in the storage data management table storage unit. The contents of VET_DII are as shown in FIG. 7, and the field area of the image data management table is secured by the value of number_of_modules in this. further,
As information about each module in VET_DII, the value of module_id is the VE_id of the image data management table.
Field, and the value of module_size is set in the size field of the image data management table.
Also, the value of the accumulation flag field is set to False.
In addition, after the file name that holds the image data stored in the image data management table, "ve_" is followed by VE_id
Allotted with.

These processes are performed for all modules described in VET_DII (step S220).
3).

Next, the CPU 450 carries out step S2201.
The filter condition relating to the VET set in (4) is set to the start state (step S2204).

According to this filter condition, the TS decoder section 320 first separates an arbitrary VET that matches the filter condition from the transport stream,
It is stored in the VET storage unit 342 and notified to the CPU 450 (step S2205).

The CPU 450 refers to the content of the VET acquired in S2205 in the VET storage unit 342, and checks the value of VE_id and the image data management table in the accumulated data management table stored in the accumulated data management table storage unit. Search for the field with the matching VE_id. When the accumulation flag in the field obtained as a result is True, the acquired VET is discarded and the acquisition notification of the next VET is awaited (step S2207).

If step S2207 is denied, the VE acquired in step S2205 in the VET storage unit 342 is acquired.
Referring to the contents of T, set the value of "first_pts" to the variable firstPTS and the value of "last_pts" to the variable lastPTS,
Get the values of "m_id" and "component_tag". CPU4
50 is a variable saving_s in the system table storage unit 134.
The PMT corresponding to the event identified by ervice_id and saving_event_id is referred to, the PID of the component whose data type to be transmitted is image data and the value of "component_tag" is equal to S is acquired, and the filter condition is stored together with the value of "stream_id". The filter conditions in the section 321 are set.
At this time, the output destination is set in the image data storage unit 371, and the filter condition is set to the start state. Figure 2
In 1, the filter condition of the filter identification number “0” is the condition regarding the image data. Unlike the case of receiving and reproducing, the output destination is set in the image data storage unit 371 (step S2208).

The TS decoder section 320 separates the image data according to the filter conditions, stores the image data in the image data storage section 371, and notifies the CPU 450.

The CPU 450 is a still image data storage unit 371.
By referring to the PES header area of the data stored in, it is determined whether the assigned PTS is between first_PTS and last_PTS. (Step S2209). Only when this condition is affirmed, the data stored in the still image data storage unit 371 has the file name “ve_ (value of VE_id)”.
The files are added and copied in the order in which they are read in the file specified in step S2210. Also, PTS is last_P
When it matches with TS (step S2211), step S
The process moves to 2213.

If the determination in step S2211 is negative, the image data acquisition process is continued and step S220
The determination of 9 is repeated.

If the determination in step S2209 is negative, and the value of PTS is smaller than First_PTS (step S2212), the image data acquisition process is continued, and the determination in step S2209 is repeated.

If the determination in step S2212 is negative, the process moves to step S2213.

In step S2213, the CPU 450
Sets the filter condition for the image data to the stopped state,
Stop video stream accumulation.

After that, the accumulation flag of the corresponding field in the image data management table in the accumulated data management table stored in the accumulated data management table storage section is set.
Set to True (step S2214).

As a result of step S2214, all the accumulation flag fields in the image data management table are Tr.
If it is ue (step S2215), it is determined that all the image data in the program has been acquired, and VET is performed.
Stop the filter condition for (step S221
6) Then, the process of accumulating the presentation information ends.

If the determination in step S2215 is negative, the process proceeds to step S2205 to perform the next VET acquisition process (navigation information storage procedure).

Hereinafter, step S2007 in FIG. 30.
Details of the navigation information storage processing performed in step S30 will be described with reference to the flowchart in FIG.

[0280] The CPU 450 refers to the PMT corresponding to the event identified by the variables saving_service_id and saving_event_id in the system table storage unit 134, and NE_Inf
Obtain PID = 0x0082 of the component to which ormation_Component_Descriptor is added, and use NET_DI
Table_id = 0x81 indicating I, and the TS decoder unit 3 sets the filter condition that specifies the DII storage unit 341 as the output destination.
20 is set as a start state (step S2)
301).

In FIG. 32, the filter identification number "4"
The filter condition of (1) represents the condition set in step S2301.

Apart from this, the same PID = 0 as above.
x0082, table_id = 0x80 indicating NVT, and a filter condition that specifies the navigation information storage unit as an output destination are set in the TS decoder unit 320. However, unlike when receiving and playing a program, table_id_extension
Field is "-", that is, the value is separated regardless of its value, and at the stage of step S2301, this filter condition is set to the stopped state.

In FIG. 32, the filter identification number "2"
The filter conditions of are related to NVT. The TS decoder unit 320 uses the NVT_D according to the filter condition.
II is separated from the transport stream, and DII
It is stored in the storage unit 134 and notified to the CPU 450 (S2
302).

The CPU 450 refers to the contents of NVT_DII stored in the DII storage unit 341 and initializes the navigation information management table in the stored data management table stored in the stored data management table storage unit. The contents of NVT_DII are those shown in FIG. 6, and the field area of the navigation information management table is secured by the value of number_of_modules in this. In addition, each module in NVT_DII
As information regarding e, the value of module_id is set in the NE_id field of the navigation information management table, and the value of module_size is set in the size field. In addition, the value of the accumulation flag field is set to False.
Set to. Also, a file name in which NE_id is added after “ne_” is assigned as the file name in which the navigation information stored in the navigation information management table is held. These processes are performed for all modules described in NVT_DII (step S230).
3).

Next, the CPU 450 carries out step S2301.
The filter condition relating to the NVT set in step 3 is set to the start state (step S2304).

In accordance with this filter condition, the CPU 450 causes the TS decoder unit 320 to separate an arbitrary NVT that matches the filter condition from the transport stream and store it in the navigation information storage unit 372. The completion is notified to the CPU 450 (step S2305).

Next, the CPU 450 carries out step S2305.
Is received, the NE_id value in the NVT stored in the navigation information storage unit 372 and the NE_i in the navigation field off management table in the stored data management table stored in the stored data management table storage unit are received.
Search for fields with matching d. When the accumulation flag in the field obtained as a result is True, the acquired NVT is discarded and the acquisition notification of the next NVT is awaited (step S2306).

[0288] If the determination in step S2306 is negative, step S in the navigation information storage section 372.
The file name of the NVT acquired in 2305 is “ne_
(Value of NE_id) ”is copied to the file specified (step S2307).

Then, the accumulation flag of the corresponding field in the navigation information management table in the accumulated data management table stored in the accumulated data management table storage section is set to True (step S2308).

As a result of step S2308, if the values of all the accumulation flag fields in the navigation information management table are True (step S230).
In 9), it is determined that all the navigation information in the program has been acquired, the filter condition for the NVT is set to the stopped state (step S2310), and the navigation information accumulation process ends.

If the determination in step S2309 is negative, the process proceeds to step S2305 to perform the next NVT acquisition process.

As described above, according to the procedure using FIGS. 19 to 23, the program accumulation process in the digital broadcast receiving apparatus 300 is realized.

(Stored Data Reproduction Procedure) The details of the stored data reproduction procedure in step S1220 of FIG. 22 will be described below. Before that, step S1 in FIG.
In 203, the method for determining whether or not the program instructed to be reproduced has already been stored is the same as the determination in step S2001 in the processing procedure of the program storage processing. That is, it is affirmed that the file name is original_network_id /
An accumulated data management table that matches transport_stream_id / service_id / event_id / saveinfo exists in the accumulated data management table storage unit 373, the value of the accumulation completion flag field is True, and the current time is Exp.
This is the case when it is before the time designated by the "iration". If this determination is affirmative, the accumulated program data reproduction operation is performed, and if the determination is negative, the program data reception / reproduction processing shown in step S1220 is performed.

FIG. 34 is a flowchart of the operation of reproducing the accumulated program data.

The CPU 450 uses the accumulated data management table storage section to select the event_id and servi corresponding to the selected program.
Based on ce_id, transport_stream_id, original_network_id, the file name is original_network_id / transport_
The file with which stream_id / service_id / event_id / saveinfo matches is read out as the accumulated data management table (step S2401). The CPU 450 acquires the values of entry_VE_id and entry_NE_id from the accumulated data management table,
The values are set as variables new_VE_id and new_NE_id (step S2402).

Next, the CPU 450 carries out step S2402.
The switching processing of the presentation information corresponding to the new_VE_id set in and the navigation information corresponding to the new_NE_id is performed in parallel. (Step S2403).
Details of each switching process will be described later.

Next, the CPU 450 makes the signal receiving section 410
It waits for the signal input of the selection operation from the user notified from (step S2404).

When the signal is input from the signal receiving unit 410, the CPU 450 processes the user input signal. Details of the processing of the user input signal will be described later (step S2405).

Next, the CPU 450 carries out step S1307.
When it is determined that the content switching is not designated as a result of the input processing of step S2406, step S2406.
The process returns to 2404 and waits for an input signal from the user.

When content switching is specified,
It is determined whether or not the service or event is changed at the same time (step S2407), and if not changed, the process returns to step S2403 and the content switching process is performed. When the service or event is changed, the reproduction processing of the stored program is ended, and the process returns to step S1202 in FIG.

(Processing for switching accumulated presentation information) The detailed operation of the processing for switching the presentation information in step S2405 will be described below with reference to the flowchart of FIG.

First, the CPU 450 stores the variables it holds.
The value of cur_VE_id and the value of the variable new_VE_id are compared (step S2501). If they match, the process ends without performing the switching process.

As a result of the comparison in step S2501, the variable ne
If the value of w_VE_id is different from the value of the held variable cur_VE_id, new_VE_id is set to cur_VE_id (step S2502).

Next, the CPU 450 extracts a field in which the value of VE_id matches the variable new_VE_id from the image data management table stored in the storage data management table storage section, and acquires the data at the storage position of that field. As a result, the storage position (file name) where the image data identified by the variable new_VE_id is stored in the image data storage unit 371 is acquired (step S2503).

Next, the CPU 450 causes the AV decoder section 33 to operate.
0 is instructed to decode the image data acquired in step S2502. The AV decoder unit 330 includes the CPU 4
According to the instruction of 50, the image data file acquired in step S2502 is read, and if there is data to be decoded (step S2504), the decoding process is performed (step S2505).

The CPU 450 outputs the image data output from the AV decoder section 330 to the video synthesizing section (step S2506).

When there is no data to be read from the image data file, the AV decoder section 330 causes the CPU 450 to
The CPU 450 instructs the AV decoder unit 330 to stop the decoding process (step S250).
7).

(Stored Navigation Information Switching Process) The detailed operation of the navigation information switching process in step S2405 will be described below with reference to the flowchart of FIG.

[0309] First, the CPU 450 stores the variables it holds.
The value of cur_NE_id and the value of the variable new_NE_id are compared (step S2601). If they match, the switching process is not performed and the process ends.

As a result of the comparison in step S2601, the variable ne
If the value of w_NE_id is different from the value of the held variable cur_NE_id, new_NE_id is set to cur_NE_id (step S2602).

Next, the CPU 450 extracts a field in which the value of NE_id matches the variable new_NE_id from the navigation information management table stored in the storage data management table storage section, and acquires the data of the storage position of that field. As a result, the storage position (file name) where the image data identified by the variable new_VE_id is stored in the navigation information storage unit 372 is acquired (step S
2603).

Next, the CPU 450, based on the navigation information interpretation program, is a navigation information table NVT which is the contents of the file obtained in step S2603.
Play. The CPU 450 refers to the object definition table in the NVT to obtain the display coordinates "X" and "Y" of the button object, and then "Normal Bitmap".
Get the index value of and refer to the bitmap table,
The bitmap data corresponding to the index value is acquired, the graphics information of the button is generated based on these, and is output to the video compositing unit 380.

The video synthesizing unit 380 includes the AV decoder unit 33.
This graphics information is superimposed on the image data decoded by 0 and output to the display unit 400 (step S260).
5).

A variable cur_focus representing the index value of the button object which is currently selected is initialized to 0 (step 2606).

The CPU 450 refers to the object definition table in the navigation information NVT obtained in step S2603 to obtain the display coordinates "X" and "Y" of the button object whose index value is equal to the value of the variable cur_focus, Next, acquire the index value of "FocusedBitmap", refer to the bitmap table, acquire the bitmap data corresponding to the index value, and based on these, the bitmap of the button that has the index value corresponding to the value of the variable cur_focus. To the selected bitmap,
The graphic information of the button object is generated and output to the video synthesizing unit 38, and the navigation information switching process ends (step S2607).

By the procedure described above with reference to FIGS. 34 to 36, the reproduction processing of the program data already accumulated in the digital broadcast receiving apparatus 300 is realized.

As described above in the present embodiment, when all the presentation information included in the program is stored, VET_DII including the information regarding all the presentation information included in the program is separated from the transport stream. Acquired and VET_DII
The image data management table of the accumulated data management table is initialized in accordance with the content of the table, and the table_id_ext corresponding to the VE_id is set as the filter condition for the acquisition of VET.
The extension field is not included, the accumulation flag field is provided in each table in the image data management table in the accumulated data management table, and the value is changed from False to True when the accumulation is performed. According to the order of VETs separated from the stream, the accumulation processing of all the still image data can be completed in a short time without overlapping accumulation of the same still image data.

1.3. Other Embodiments In this embodiment, as the presentation information, the value of PTS added to the header of PES is first_.
Although the MPEG-I frame in which PTS = last_PTS is associated with the description, the present invention is not limited to this.
As presentation information, first_PTS <last_PTS
Therefore, even when the moving image data whose PTS value is within the range of first_PTS and last_PTS is targeted, the similar process can easily realize the receiving / reproducing and storing process of the moving image data.

Also, in the present embodiment, the content is composed of a set of image data as presentation information and navigation information. However, the elementary stream specified by VET is not a video elementary stream, but an MPEG standard. If the audio elementary stream defined in the above is used and the decoding process of the audio elementary stream is executed by the AV decoder unit, it is possible to easily realize not the image data but the audio data as the presentation information.

Further, the presentation information is not limited to only image data or audio data, but is specified as a set of VE_id for specifying image data and VE_id for specifying audio data. It is possible to easily expand the content expression by reproducing one piece of information.

Further, in the embodiment of the present invention, the content is designated by a set of presentation information and navigation information, but the present invention is not limited to this.

For example, only the navigation information may be designated when the content is designated, and the presentation information may be referred to from the navigation information. Figure 3
7 shows an example of the navigation information NVT. In the object definition table 2721, “background image” is set as the type different from “button” for the object with index number “3”, and the corresponding bitmap data index is set to “5”. On the other hand, in the bitmap table 2724, not only the correspondence between the index number and the bitmap data itself but also “Type
"e" field is provided, in addition to the usual "bmp",
"MPEG-I" is defined. At this time, "MPEG-
For a bitmap in which the type of “I” is set, “bi
Instead of setting bitmap data in the “tmapData” column, VE_id is set. The navigation information specified in this way is selected,
When the graphic object with the index number “3” is displayed, the receiving and reproducing process of the still image data (presentation information) identified by VE_id = 0x0001 is performed.

In the case where the program including the navigation information shown in FIG. 37 is stored, the present embodiment is applied to all the navigation information included in the program and all the presentation information referred to by the navigation information. It goes without saying that the accumulation processing can be realized by the same method as the method described in the embodiment.

In the embodiment of the present invention, when the value of the accumulation completion field of the accumulated data management table is False in step S2001, it means that the accumulation is not completed and the M being transmitted is being transmitted.
Although the PEG-2 transport stream reception process is supposed to be performed, even if all the data of the program has not been accumulated, the presentation information or navigation information to be reproduced in the program has already been accumulated. In some cases, reproduction processing of accumulated presentation information or navigation information may be performed.

That is, the value of the accumulation completion field is Fa.
Even if it is ls, if the accumulation flag of the table identified by the corresponding VE_id in the image data management table of the accumulated data management table is True,
The accumulated image data is read and reproduced. Similarly, when the accumulated data of the table identified by the corresponding NE_id in the navigation information management table of the accumulated data management table is True, the accumulated navigation information may be read and reproduced.

In the embodiment of the present invention, Expira during the PMT is used as information indicating the expiration date of program data.
Includes tion_Descriptor. However, the present invention is not limited to this.

The expiration date may be set not for the entire program but for each presentation information and each navigation information unit. For example, FIG. 38 and FIG.
9 shows an example thereof. Expirati indicating expiration date information for modules associated with individual presentation information and individual navigation information in NVT_DII and VET_DII
The onTime field is set.

In this case, an Expiration field is provided in the image data management table created in the accumulated data management table. VET in step S2202
_DII is acquired, and when the image data management table is created / initialized in step S2203, Ex described for each module of VET_DII shown in FIG.
The Expiration field is provided in the navigation information management table created in the accumulated data management table for the value of pirationTime similarly to the image data. Step S230
After obtaining NVT_DII in step 2, step S2
At the time of creating / initializing the navigation information management table in 303, the value of ExpirationTime described for each module of NVT_DII shown in FIG. 38 is written in the Expiration field of the navigation information management table.

FIG. 40 is a diagram showing an example of a stored data management table in which an Expiration field is added to the image data management table and the navigation information management table. In the figure, the value of the Expiration field for the presentation information corresponding to VE_id = 1 is "1999/9/20 23: 59: 0".
Is set. This is identified by VE_id = 1. The presentation information is valid in 1999.
It is 23: 59: 0 seconds on September 20, and it means that if the reproduction is attempted after this deadline, the reproduction is not performed.

Further, in the step S2001, when it is judged whether or not the image data has been accumulated,
When the accumulation flag of the table identified by the corresponding VE_id in the image data management table of the accumulated data management table is True, the value of the Expiration field is further referred to, and the current time is set in the Expiration field. If it is determined that it is before the value, the reproduction processing of the image data accumulated and stored in the image data storage unit is performed, and if the current time is after the value set in the Expiration field, The presentation information may be received and reproduced.

In the present embodiment, it has been assumed that one program data is not changed within the program according to time. Therefore, in step S2201, if the accumulated data management table exists, the value of the accumulation completion flag field is True, and the current time is before the time specified by Expiration, it is determined that the accumulation has been completed. Then, the process shifts to the reproduction process of the accumulated data.

However, the present invention is not limited to this, and it may be assumed that the program data is updated on the way. For example, every time the program data is updated,
Modu of NVT_DII and VET_DII respectively
The value of the le_Version field is updated, and the stored data management table of the digital broadcast receiving device 300
The NVT version field and VE are used as fields for storing the value of the Module_Version field of each of these.
When adding the T version field and storing program data, NVT_DII and VET_DII Modu
Set the value of le_Version.

Further, in addition to the judgment items described in step S2001, when the stored program described in FIG. 34 is reproduced,
VET_DII and NVT_DI currently being sent
It is determined whether the value of the Module_Version field of I and the values of the VET version field and the NVT version field match. If they match, the accumulated data is replayed. If they do not match, a new stream is created. By performing the reception / reproduction processing from, the reproduction processing of the latest data becomes possible.

In the above embodiment, VET_DII and NVT_DII are used for storage management, but storage may be carried out without this.

In the above embodiment, when the navigation information table and the presentation information are stored, the individual navigation information table and the individual presentation information are not specified as the filter condition, and they are acquired in the separated order. There is. However, individual navigation information tables and presentation information may be specified and acquired. Further, the designation may not be performed while there are many unacquired navigation information tables and presentation information, and the unacquired navigation information tables and presentation information may be designated individually when the number of unacquired navigation information tables and presentation information decreases. This is because, if no designation is made in the state where the number of unacquired items is small, there is a waste of acquiring already accumulated items. For example, if the number of filter conditions that can be used in the TS decoder 320 is equal to the number of unacquired filter conditions, individual designation may be performed.

In the above embodiment, the navigation information table links the presentation information. However, HTML,
The presentation information may be expressed in a language such as XML. In this case, the link destination is expressed by the presentation language itself which is the content. Therefore, when using languages such as HTML and XML, one set of content elements may be repeatedly sent, and the navigation information table may not be used.
The recording process (accumulation process) and the reproduction process can be basically performed by the same process except that the process for the navigation information table is eliminated.

In the above embodiment, the accumulated navigation information table and presentation information are used to reproduce them in the receiving device 300. However, since it is in a format that can be used by a computer, it may be accessed and used from an external computer.

In the above embodiment, the expired one is not output. As a result, there is no risk that the application for the expired application for TV shopping or the past weather forecast will be erroneously reproduced. However, it may be output together with the display that the expiration date has expired.

Further, in the above embodiment, the case where each function of FIG. 20 is realized by using the CPU has been described.
Some or all of the functions may be realized by hardware logic.

2. Second Embodiment 2.1. Digital Broadcast Receiving Apparatus FIG. 41 shows the overall structure of a digital broadcast receiving apparatus 305 according to the second embodiment of the present invention. The configuration of the transmission device in this embodiment is the same as that in the first embodiment. The receiving device 305 includes a receiving unit 310 and a restoring unit 4.
45, an operation reception unit 410, and a program data storage unit 370. The restoration unit 445 includes a TS decoder unit 320, A
The V decoder section 330 and the control section 355 are provided. In this embodiment, when the control unit 355 receives a program in which a set of presentation information (content elements) is repeatedly sent, the presentation information (content elements) and the navigation information table are recorded (in parallel with the reception processing). Accumulation). Therefore, when the presentation information or the navigation information table is switched, if the presentation information or the navigation information table to be output next is already recorded, the processing can be speeded up. .

In the method of providing the interactivity described here, a set of presentation information and navigation information table is repeatedly sent.
Therefore, interactive broadcasting can be realized without recording one set of these data on the receiving device side.

Furthermore, by using the digital broadcasting system according to this embodiment, it is possible to speed up the response process in the receiving device having a sufficient storage capacity while ensuring compatibility with the receiving device having a small recording capacity.

2.1.1 Hardware Configuration of Receiving Device The hardware configuration when the receiving device of FIG. 41 is realized by using a CPU is the same as that of FIG. A hard disk may be used as the program data storage unit 370, but a semiconductor memory or the like is preferably used from the viewpoint of high-speed processing.

2.1.2 Operation of Reception Processing Device FIGS. 42, 43, and 44 show flow charts of a reception processing program recorded in the ROM 420. When the service is specified by the operation of the operator, the CPU 450
Controls the tuner 310 and the TS decoder unit 320 to select the service (step S4001).
The selection process is the same as in the first embodiment.

Next, the CPU 450 determines whether or not the program of the service has interactiveness by repeatedly transmitting a set of data (step S4002). This judgment is based on the control data PM
This can be done by referring to T. If the program is not interactive, normal reception processing is performed (step S4004).

In the case of a program having interactivity, the receiving process while recording is executed (step S4).
003).

Details of the receiving process while recording are shown in FIG.
3, shown in FIG. First, the CPU 450 refers to the control data PMT (see FIG. 19A), and the TS decoder unit 3
20, the presentation information of the entry and the navigation information are received and acquired, and displayed on the display unit 400 (step S4011). At the same time, the obtained presentation information and navigation information are recorded in the memory 340 as a program information storage unit. This is AV
This can be performed by instructing the decoder 330 to output to the video synthesizing unit 380 and also store in the memory 340.

In this way, while the presentation information and navigation information of the entry are being displayed, other unrecorded presentation information and navigation information are acquired and recorded (step S410).
2). The recording process here is the same as the recording process in the first embodiment. For example, if the presentation information and the navigation information are not designated and the received information is unrecorded, the recording may be performed. If all (one set) of presentation information and navigation information has been recorded, step S4102 is skipped and skipped. Further, whether or not all one set of presentation information and navigation information is recorded can be managed using VET_DII and NVT_DII, as in the first embodiment.

Next, while performing the above recording processing, it is determined whether or not a switching instruction of presentation information and navigation information is given by the operator (step S4103). If there is no switching instruction, the above recording process is continued.

When there is a switching instruction, it is determined whether the designated navigation information has already been recorded in the memory 340 (step S4014). If it is recorded, it is read from the memory 340 and output (step S4015). If not recorded, the TS decoder unit 320 is controlled to receive, restore, and output (step S4016).

Next, it is determined whether the specified presentation information has already been recorded in the memory 340 (step S4017). If it is recorded, it is read from the memory 340 and output (step S
4018). If not recorded, the TS decoder unit 320 is controlled to receive, restore, and output (step S4019). Then, again, step S4
Step 102 and subsequent steps are executed.

As described above, while performing the receiving process,
The recording process can be performed in advance of the previous process.

2.2. Other Embodiments 2.2.1 Application of Modifications to First Embodiment Also in the second embodiment, the same modifications and applications as the other embodiments pointed out in the first embodiment are performed. be able to.

2.2.2 Version Information Further, version information may be attached instead of the expiration date. Even if the recording of one set of data (presentation information, navigation information) has already been completed, if the expiration date has passed or the version becomes old, it should be acquired and recorded again. You may In this case, it is possible to determine whether or not the expiration date has passed by comparing with the current time. Further, by comparing the recorded data version with the transmitted data version, it is possible to determine whether the recorded data version is outdated. In this way, new data can always be recorded.

2.2.3 Timing of monitoring version etc. Further, as described above, when the output of presentation information and navigation information is designated (by the operation of the viewer) instead of always monitoring the expiration date and version. Alternatively, the above-described monitoring may be performed, new data may be received and output, and the new data may be simultaneously recorded.

2.2.4 Schedule of new data transmission When the expiration date has expired, the transmission device should also transmit information as to whether or not data with the next new expiration date is to be transmitted. Good. This information is
For example, it can be described in VET_DII and NVT_DII.
Receiving this information, the receiving device can determine whether newer data than the currently recorded data has been sent.

2.2.5 Recording Processing Information Information such as frequent version upgrades has little merit in recording on the receiving device side. Therefore,
On the transmitting device side, a recording necessity flag indicating whether or not recording should be performed for each information may be described in VET_DII and NVT_DII and transmitted. In response to this, on the receiving device side, if the flag indicates that "recording is unnecessary",
The recording in steps S4101 and S4102 is not performed. Also, as a recording necessity flag,
The recording priority may be transmitted, and the receiving side may perform recording in descending order of priority.

On the receiving device side, VET_DII, N
Compare the expiration date described in VT_DII with the current time,
If the time until the expiration date is short, step S410.
The recording in step 1 or step S4102 may not be performed. As a result, it is possible to effectively use the recording capacity by recording only the data having a long expiration date. Further, whether or not to record may be determined not only by the remaining time of the expiration date, but also by considering the remaining memory capacity.

Furthermore, in the above embodiment, step S4.
In 102, recording is performed in order from the acquired information. However, information having a long expiration time may be preferentially acquired and recorded.

[0360] Also, from the transmitting device, information indicating the version upgrade frequency for each information in VET_DII, NVT_DII.
Verup may be sent (see FIGS. 45 and 46). When the version upgrade frequency flag Verup is "1", it indicates that the version upgrade frequently occurs. When the flag Verup is "0", it indicates that there are few changes due to version upgrade.

In the receiving device, if the version upgrade frequency flag Verup is "1", the recording process in step S4101 or step S4102 is not performed. If the version upgrade frequency flag Verup is "0", step S4
The recording processing in 101 or step S4102 is performed. As a result, it is possible to effectively use the recording capacity by recording only the data having a low version upgrade frequency. Further, whether or not to record may be determined not only by the version upgrade frequency flag Verup, but also by considering the remaining storage capacity.

Further, in the above embodiment, step S4.
In 102, recording is performed in order from the acquired information. However, version upgrade frequency flag Verup
The information of “0” may be preferentially acquired and recorded.

Also, the version upgrade frequency flag Verup
As a result, the frequency of version upgrade may be digitized (for example, five levels from 1 to 5) and shown. Based on this frequency information, the receiving device can determine whether or not to record or determine the priority of recording.

As described above, whether the transmitting device transmits the recording process information such as the recording necessity flag, the expiration date, the version upgrade frequency, etc., and the receiving device performs the recording based on the recording process information. It can be judged whether or not. Further, in the above-described embodiment, the recording processing information is attached to each information, but the recording processing information may be described in the entire set of data (presentation information, navigation information).

[Brief description of drawings]

FIG. 1 is a diagram showing a transmission state of radio waves in satellite broadcasting.

FIG. 2 is a diagram illustrating a processing outline of a transmission device.

FIG. 3 is a diagram showing a transport stream.

FIG. 4 is a diagram showing a structure of packetized data.

FIG. 5 is a diagram showing a relationship between control data and element streams.

FIG. 6 is a diagram showing control data NIT.

FIG. 7 is a diagram showing a configuration of a receiving device.

FIG. 8 is a diagram showing still image identification information VET and still image VE during transport trim.

FIG. 9 is a diagram showing still image identification information VET.

[Fig. 10] Fig. 10 is a diagram showing display contents of a broadcast having an interactivity.

FIG. 11 is a diagram showing a transport stream.

FIG. 11a is a diagram showing an appearance of a remote controller.

FIG. 12 is a diagram showing control data NVT1.

FIG. 13 is a diagram showing control data NVT2.

FIG. 14 is a diagram showing a configuration of a transmission device 200.

FIG. 15 is a diagram showing NVT_DII.

FIG. 16 is a diagram showing VET_DII.

FIG. 17A is a diagram showing control data NIT. FIG. 17B is a diagram showing the control data SDT. FIG. 17C is a diagram showing the control data EIT.

FIG. 18A is a diagram showing control data PAT. FIG. 18B is a diagram showing the control data PMT.

FIG. 19 is a diagram showing a description of control data PMT.

FIG. 20 is a diagram showing an overall configuration of a digital broadcast receiving apparatus according to the first embodiment.

FIG. 21 is a diagram showing a hardware configuration of a digital broadcast receiving device.

FIG. 22 is a diagram showing a flowchart of reception, recording, and reproduction processing.

FIG. 23 is a diagram showing a flowchart of reception / reproduction processing.

FIG. 24 is a diagram showing a flowchart of content switching processing.

FIG. 25 is a diagram showing filter conditions of the TS decoder 320.

FIG. 26 is a diagram showing filter conditions.

FIG. 27 is a diagram showing a flowchart of a navigation information switching process.

FIG. 28 is a diagram showing a flowchart of user input signal processing.

FIG. 29 is a diagram showing an accumulated data management table.

FIG. 30 is a diagram showing a flowchart of program accumulation processing.

FIG. 31 is a diagram showing a flowchart of presentation information storage processing.

FIG. 32 is a diagram showing filter conditions.

FIG. 33 is a diagram showing a flowchart of navigation information storage processing.

FIG. 34 is a diagram showing a flowchart of a reproduction process of accumulated program data.

FIG. 35 is a diagram showing a flowchart of presentation information switching processing.

FIG. 36 is a diagram showing a flowchart of navigation information storage processing.

FIG. 37 is a diagram showing a navigation information table.

FIG. 38 is a diagram showing NVT_DII.

FIG. 39 is a diagram showing VET_DII.

FIG. 40 is a diagram showing an accumulated data management table.

FIG. 41 is a diagram showing an overall configuration of a digital broadcast receiving device according to a second embodiment.

FIG. 42 is a diagram showing a flowchart of the entire reception process.

FIG. 43 is a diagram showing a flowchart of reception processing while recording.

FIG. 44 is a diagram showing a flowchart of reception processing while recording.

[Fig. 45] NVT_DI describing version upgrade frequency information
It is a figure which shows I.

[Fig. 46] VET_DI describing version upgrade frequency information
It is a figure which shows I.

[Explanation of symbols]

200: Digital broadcasting transmitter 210: Program data management unit 220 ... Program information management unit 230 ... System information generation unit 240 ... Data transmission control unit 250 ... Multiplexing unit 260 ... Transmission unit 300 ... Digital broadcasting receiver 310 ... Receiving unit 320 ... TS decoder section 330 ... AV decoder section 350 ... Reception control unit 360: playback control unit 370 ... Program data storage section 390 ... Voice output unit 400 ... Display 410 ... Operation reception unit

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hiroyuki Waki             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Junichi Hirajo             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. F-term (reference) 5C063 AB03 AB07 CA23 DA07 DA13                       EB07 EB32                 5C064 BA01 BB07 BB10 BC18 BC20                       BC25 BD08 BD09

Claims (67)

[Claims] 1. A set of linked content elements is broadcast by a transmitting device, and the receiving device selects a content element from the set of transmitted content elements and outputs the selected content element. A digital broadcasting system capable of switching a content element to be selected according to an input, the digital broadcasting system including the following transmitting device and receiving device: the transmitting device includes a plurality of content elements as a set, The content element set is repeatedly transmitted, and at least one piece of navigation control data for controlling which of a plurality of content elements is output is repeatedly transmitted. The receiving device has been transmitted. The receiving unit that receives data, the operation receiving unit that receives the operation of the operator, and the operation in the receiving mode Based on the operation received by the attachment, the content element to be restored next is determined according to the navigation control data, and the content element to be restored next is selected from the repeatedly sent content element set and restored. In the recording mode, one set of navigation control data and one set of navigation control data
The content elements of the set are restored and recorded, and in the playback mode, based on the operation received by the operation receiving unit,
And a restoration unit that selects and outputs a content element from the set of recorded content elements according to the recorded navigation control data. 2. The digital broadcasting system according to claim 1, wherein the transmission device transmits the content element set as an element stream to which a continuous series of information is added, and each content element is transmitted from the element stream. Extraction control data to be extracted based on the series of information, in association with the content element, repeatedly transmitted, the restoration unit of the receiving device, in the reception mode and the recording mode, based on the series of information of the extraction control data. ,
Characterized by extracting the target content element from the element stream. 3. The digital broadcasting system according to claim 2, wherein time information is used as the series of information, and the content element is video data cut out according to a start time and an end time in the element stream based on the time information. Alternatively, it is characterized by being voice data. 4. The digital broadcasting system according to claim 2, wherein time information is used as the series of information, and the content element is still image data cut out based on the time information in the element stream. What to do. 5. The digital broadcasting system according to claim 1, wherein the transmitting device transmits a content element list indicating a list of content elements included in the content element set in association with the content element set. In the recording mode, the restoration unit of the receiving device determines whether or not all the content elements included in the content element set have been recorded, based on the content element list. 6. The digital broadcasting system according to claim 1, wherein the transmitting device associates a navigation list showing a list of navigation control data included in the navigation control data set with the navigation control data set. In the recording mode, the restoration unit of the reception device determines whether or not all navigation control data included in the navigation data set has been recorded, based on the navigation list. 7. The digital broadcasting system according to claim 1, wherein the transmitting device transmits a set of content elements or a set of extraction control data with an expiration date, and the receiving device. In the recording mode, the restoring unit records the set of content elements in association with the expiration date, and in the playback mode, does not output the set of content elements when the expiration date has passed. Characterized by outputting together with information indicating that the expiration date has passed. 8. The digital broadcasting system according to claim 1, wherein the transmitting device transmits the content element or the extraction control data with an expiration date, and the restoring unit of the receiving device records. In the mode, the expiration date is associated with the content element and recorded, and in the playback mode, when the expiration date has passed, the content element is not output or is output together with information indicating that the expiration date has passed. Characterized by 9. The digital broadcasting system according to claim 7 or 8, wherein the expiration date is included in a content element list or a navigation list and transmitted. 10. A digital broadcast receiving apparatus capable of switching a content element to be selected according to an operation input of a viewer, comprising a receiving unit for receiving transmitted data, and an operation of an operator. In the operation accepting unit that accepts, and in the receiving mode, based on the operation accepted by the operation accepting unit, the content element to be restored next is determined according to the navigation control data, and from the content element set repeatedly sent, Then, the content element to be restored is selected, restored, and output. In the recording mode, a set of navigation control data and
The content elements of the set are restored and recorded, and in the playback mode, based on the operation received by the operation receiving unit,
1 according to the recorded navigation control data
A digital broadcast receiving apparatus comprising: a restoration unit that selects and outputs a content element from a set of content elements. 11. The digital broadcast receiving apparatus according to claim 10, wherein the restoration section is configured to receive in a reception mode and a recording mode.
A feature that a target content element is extracted from an element stream based on extraction control data that identifies a content element to which a continuous series of information is attached based on the series of information. 12. The digital broadcast receiving device according to claim 11, wherein time information is used as the series of information, and the content element is a moving image cut out by a start time and an end time based on the time information in the element stream. Characterized by being data or voice data. 13. The digital broadcast receiving device according to claim 11, wherein time information is used as the series of information, and the content element is still image data cut out based on the time information in the element stream. What to do. 14. The digital broadcast receiving apparatus according to claim 10, wherein the restoration unit records all content elements included in a content element set based on the received content element list in a recording mode. Characterized by determining whether or not. 15. The digital broadcast receiving device according to claim 10, wherein the restoration unit, in the recording mode, stores all navigation control data included in the navigation control data set based on the received navigation list. Characterized by determining whether or not it has been recorded. 16. The digital broadcast receiving apparatus according to claim 10, wherein the restoration unit does not specify which extraction control data to extract in the recording mode, and targets all extraction control data. A feature that the content elements are sequentially recorded in the order in which they are extracted and the extraction control data is acquired. 17. The digital broadcast receiving apparatus according to claim 10, wherein the restoration unit does not specify which navigation control data to retrieve in the recording mode, and targets all navigation control data. The feature is that the navigation control data is sequentially recorded in the order in which they are taken out and the navigation control data is acquired. 18. The digital broadcast receiving apparatus according to claim 10, wherein the restoration unit extracts any extraction control data in the recording mode while a large amount of unrecorded extraction control data remains. If not specified, all the ejection control data are taken out, and the ejection control data are sequentially recorded in the order in which the ejection control data was acquired. If there are few unrecorded ejection control data remaining, The feature is that control data is specified, taken out, and recorded. 19. The digital broadcast receiving apparatus according to any one of claims 10 to 15, wherein the restoration unit is configured to record any navigation control data while a large amount of unrecorded navigation control data remains in the recording mode. All navigation control data is extracted without specifying whether or not to extract, and the navigation control data is sequentially recorded in the order in which the navigation control data was acquired. The navigation control data of is specified, taken out, and recorded. 20. The digital broadcast receiving apparatus according to claim 10, wherein the restoration section is sent in association with a set of content elements or a set of extraction control data in the recording mode. The time limit is recorded in association with one set of content elements, and in the playback mode, when the expiration date has passed, the one set of content elements is not output or together with information indicating that the expiration date has passed. Characterized by outputting. 21. The digital broadcast receiving apparatus according to claim 10, wherein in the recording mode, the restoration unit sets an expiration date sent in association with a content element or extraction control data to the content element. Is recorded in association with, and in the reproduction mode, when the expiration date has passed, the content element is not output or is output together with information indicating that the expiration date has passed. 22. A digital broadcast recording device for recording a digital broadcast capable of switching a content element to be selected in accordance with a viewer's operation input, and a receiving unit for receiving transmitted data. A content element with a continuous series of information is specified based on the extraction control data that is specified based on the series of information, and the target content element is extracted from the element stream to restore a set of content elements. A digital broadcast recording device comprising: a recording section for recording and recording a set of navigation control data. 23. A receiving unit that receives a transport stream, an operation receiving unit that receives an operation of an operator, and at least desired navigation control data and content elements from the received transport stream according to the operation of the operator. A transport decoder that selects and outputs, a decompression decoder that decompresses the output from the transport decoder, a CPU that controls each of the above units, a memory that stores a program that determines the control content of the CPU, and to perform recording. And a recording unit for recording the content element to be restored next in accordance with the navigation control data based on the operation received by the operation receiving unit in the reception mode. Content that is repeatedly sent From the element set, the content element to be restored next is separated by the transport decoder and decompressed by the decompression decoder to be restored and output. In the recording mode, one set of navigation control data and one set of content In the playback mode, the element is restored and recorded in the recording unit. Based on the operation received by the operation receiving unit, the content is selected from the set of recorded content elements according to the navigation control data recorded in the recording unit. A program for causing a CPU to execute a process of selecting and outputting an element. 24. A receiving unit that receives a transport stream, an operation receiving unit that receives an operation of an operator, and at least desired navigation control data and content elements from the received transport stream according to the operation of the operator. Recording a program for causing a CPU that controls a transport decoder that selects and outputs it, a decompression decoder that decompresses the output from the transport decoder, and a recording unit for recording to execute a reception process In the receiving mode, the content element to be restored next is determined according to the navigation control data based on the operation accepted by the operation accepting unit, and the content element set is repeatedly sent. , Transport the next content element to be restored Separated by a video decoder and decompressed by a decompression decoder to restore and output. In the recording mode, one set of navigation control data and one set of content elements are restored and recorded in the recording unit, and in the reproduction mode, A program for causing the CPU to execute a process of selecting and outputting a content element from a set of recorded content elements according to navigation control data recorded in the recording section based on an operation received by the operation receiving section. A recording medium on which is recorded. 25. A digital broadcast transmitting apparatus for transmitting a set of linked content elements, wherein a plurality of content elements are set as one set, and the content element set is repeatedly transmitted, and among the plurality of content elements. , Digitally transmitting one or more pieces of navigation control data for controlling which is output repeatedly, and transmitting a content element list indicating a list of content elements included in the content element set in association with the content element set. Broadcast transmitter. 26. A set of linked content elements is broadcast, and the receiving side selects a content element from the set of sent content elements and outputs the content element in response to an operation input by a viewer. A digital broadcasting method capable of switching a content element to be selected, wherein the transmitting side sets a plurality of content elements as one set, repeatedly transmits the content element set, and, among the plurality of content elements, One or more navigation control data for controlling which is output is repeatedly transmitted, the receiving side receives the transmitted data, and in the receiving mode, based on the operation of the operator, The content element to be restored next is determined according to the navigation control data, and the content element repeatedly sent is required. The content element to be restored next is selected from the set, restored and output, in the recording mode, one set of navigation control data and one set of the content element are restored and recorded, and in the playback mode, A digital broadcasting method for selecting and outputting a content element from a set of recorded content elements according to recorded navigation control data based on an operation received by an operation receiving unit. 27. A set of content elements linked to each other by the description of the content element itself is broadcast by a transmitting device, and the receiving device side selects a content element from the set of transmitted content elements. Output,
What is claimed is: 1. A digital broadcasting system capable of switching a content element to be selected according to a viewer's operation input, the digital broadcasting system including a transmitting device and a receiving device described below: The transmitting device includes a plurality of content elements. One set of the content element sets is repeatedly transmitted, and the receiving device includes a receiving unit that receives the transmitted data, an operation receiving unit that receives an operation of an operator, and an operation receiving unit in the receiving mode. Based on the operation received by the reception unit, the content element to be restored next is determined according to the link information in the content element, and the content element to be restored next is selected from the repeatedly sent content element set. Then, in the recording mode, a set of content elements is restored, recorded, and played back. In accordance with the link information in the recorded content element, the content element to be output next is selected and output from the set of recorded content elements based on the operation received by the operation receiving unit. And a restoration unit. 28. A digital broadcast receiving apparatus capable of switching a content element to be selected according to an operation input of a viewer, comprising a receiving unit for receiving transmitted data, and an operation of an operator. In the operation accepting unit that accepts, and in the receiving mode, based on the operation accepted by the operation accepting unit, the content element to be restored next is determined according to the link information in the content element, and the content element set that is repeatedly sent is determined. The content element to be restored next is selected from the contents, and is restored and output. In the recording mode, a set of content elements is restored and recorded. In the playback mode, based on the operation received by the operation receiving unit. , According to the link information in the recorded content element, the next out of the set of recorded content elements. Digital broadcast receiving apparatus comprising: a restoring unit for selecting and outputting should do content elements, a. 29. A set of linked content elements is broadcast by a transmitting device, and the receiving device side selects and outputs the content element from the set of transmitted content elements, and a viewer operation is performed. A digital broadcasting system capable of switching a content element to be selected according to an input, the digital broadcasting system including the following transmitting device and receiving device: the transmitting device includes a plurality of content elements as a set, The content element set is repeatedly transmitted, and navigation control data for controlling which of a plurality of content elements is output is repeatedly transmitted. The receiving device receives the transmitted data. Receiving unit, an operation receiving unit that receives an operation of an operator, and an operation received by the operation receiving unit Based on the navigation control data, the content element to be restored next is determined, and the content element to be restored next is selected from the repeatedly sent content element set, and a restoration unit for restoring and outputting the selected content element. The restoration unit performs a process of restoring and recording another content element in parallel with a process of selecting and restoring a desired content element determined based on an operation input of the operator, If the desired content element determined based on the operation input is already recorded, the content element previously restored and recorded is output. 30. The digital broadcasting system according to claim 29, wherein the transmitting device transmits a content element set as an element stream to which a continuous series of information is added, and each content element is transmitted from the element stream. Extraction control data to be extracted based on the series of information is associated with a content element and repeatedly transmitted, and the restoration unit of the receiving device, based on the series of information of the extraction control data, from the element stream, Characterized by retrieving the content element to be. 31. The digital broadcasting system according to claim 29 or 30, wherein time information is used as the series of information, and the content element is cut out by a start time and an end time based on the time information in the element stream. Characterized by video data or audio data. 32. The digital broadcasting system according to claim 29, wherein time information is used as the series of information, and the content element is still image data cut out based on the time information in the element stream. What is characteristic. 33. The digital broadcasting system according to claim 29, wherein the transmitting device transmits a content element list indicating a list of content elements included in the content element set in association with the content element set. The restoration unit of the reception device determines whether or not all the content elements included in the content element set have been recorded, based on the content element list. 34. The digital broadcasting system according to claim 29, wherein the transmission device associates a navigation list showing a list of navigation control data included in the navigation control data set with the navigation control data set. The restoring unit of the receiving apparatus determines whether or not all navigation control data included in the navigation data set has been recorded, based on the navigation list. 35. The digital broadcasting system according to any one of claims 29 to 34, wherein the transmitting device transmits the entire set of content elements or individual content elements in association with an expiration date or a version, and the receiving device. The restoring unit of the present invention records the one set of the entire content element or each content element in association with the expiration date or version, and performs the optimization process based on the expiration date or version information. . 36. The digital broadcasting system according to claim 35, wherein in the optimization process performed by the restoration unit of the receiving device, a desired content element determined based on an operation input by an operator is:
If the content element has already been recorded and the expiration date of the content element has passed, or if the version is outdated, information that the recorded content element is not output or the expiration date has passed It is characterized by outputting with. 37. The digital broadcasting system according to claim 35, wherein in the optimization process performed by the restoration unit of the receiving device, a desired content element determined based on an operation input by an operator is
If the content element has already been recorded, but the expiration date of the content element has expired or the version is old, the already recorded content element is not output and a set of transmitted content A feature that a desired content element is selected from the elements, restored, and output. 38. The digital broadcasting system according to claim 35, wherein the optimization processing performed by the restoration unit of the receiving device compares a version transmitted in association with the content element with a version already recorded, or , Comparing the current date and time with the already recorded expiration date, and if the expiration date has expired or the version is old, the transmitted content element is restored and recorded again. What to do. 39. The digital broadcasting system according to claim 35, wherein the transmitting device indicates whether to transmit a new content element set or a new content element having the next version or the next expiration date. Characterized by transmitting a set of content elements as a whole or in association with individual content elements. 40. A digital broadcast receiving apparatus capable of switching a content element to be selected according to an operation input of a viewer, comprising a receiving unit for receiving transmitted data, and an operation of an operator. Based on the operation receiving unit that receives the operation and the operation received by the operation receiving unit, the content element to be restored next is determined according to the navigation control data, and the content element set to be restored next from the repeatedly sent content element set. And a restoration unit that restores and outputs the content element, wherein the restoration unit selects another desired content element determined based on the operation input of the operator and restores the other content element in parallel. The content element is restored and recorded, and the desired content element determined based on the operation input of the operator is already recorded. In this case, the content element previously restored and recorded is output. 41. The digital broadcast receiving device according to claim 39 or 40, wherein the restoration unit is configured in a reception mode and a recording mode.
A feature that a target content element is extracted from an element stream based on extraction control data that identifies a content element to which a continuous series of information is attached based on the series of information. 42. The digital broadcast receiving device according to claim 41, wherein time information is used as the series of information, and the content element is a moving image cut out by a start time and an end time based on the time information in the element stream. Characterized by being data or voice data. 43. The digital broadcast receiving apparatus according to claim 41, wherein time information is used as the series of information, and the content element is still image data cut out based on the time information in the element stream. What to do. 44. The digital broadcast receiving apparatus according to claim 40, wherein the restoration unit records all content elements included in the content element set based on the received content element list. What is characterized by determining. 45. The digital broadcast receiving apparatus according to claim 40, wherein the restoration unit records all navigation control data included in the navigation control data set based on the received navigation list. What is characterized by determining whether. 46. The digital broadcast receiving device according to claim 40, wherein the restoration unit does not specify which extraction control data to extract, and extracts all extraction control data as a target. The content elements are sequentially recorded in the order in which the extraction control data is acquired. 47. The digital broadcast receiving apparatus according to claim 40, wherein the restoration unit does not specify which navigation control data to extract, and extracts all navigation control data as a target. A feature that the navigation control data is sequentially recorded in the order in which the navigation control data is acquired. 48. The digital broadcast receiving apparatus according to claim 40, wherein the restoration unit specifies which extraction control data to extract while a large amount of unrecorded extraction control data remains. First, all the ejection control data is taken out, and the ejection control data is sequentially recorded in the order in which the ejection control data was acquired. If the unrecorded ejection control data becomes small, the unrecorded ejection control data is designated. It is characterized by taking out, taking out and recording. 49. The digital broadcast receiving apparatus according to any one of claims 40 to 45 and 48, wherein the restoration unit determines which navigation control data is taken out while a large amount of unrecorded navigation control data remains. All navigation control data is retrieved without specifying it, the navigation control data is sequentially recorded in the order in which the navigation control data was acquired, and if there is little unrecorded navigation control data, the unrecorded navigation control data is deleted. It is characterized by picking up and recording. 50. The digital broadcast receiving apparatus according to any one of claims 40 to 49, wherein the decompression unit sets an expiration date or version transmitted in association with the entire set of content elements or individual content elements to 1 The contents are recorded in association with the entire set of content elements or individual content elements, and the optimization process is performed based on the expiration date or version information. 51. The digital broadcast receiving apparatus according to claim 50, wherein the optimizing process performed by the restoring unit is performed when a desired content element determined based on an operation input by an operator is already recorded. When the expiration date of the content element is expired or the version is old, the recorded content element is not output or is output together with the information indicating that the expiration date has passed. thing. 52. The digital broadcast receiving apparatus according to claim 50, wherein in the optimizing process performed by the restoring unit of the receiving apparatus, a desired content element determined based on an operation input of an operator,
If the content element has already been recorded, but the expiration date of the content element has expired or the version is old, the already recorded content element is not output and a set of transmitted content A feature that a desired content element is selected from the elements, restored, and output. 53. The digital broadcast receiving apparatus according to claim 48, wherein the optimization processing performed by the restoration unit compares a version transmitted in association with a content element with a version already recorded. Or, compare the current date and time with the already recorded expiration date, and if the expiration date has passed or the version is old, restore and record the transmitted content element again. Characterized by. 54. The digital broadcast receiving apparatus according to claim 48, wherein the restoration unit plans to transmit a new content element set or content element having the next version or the next expiration date. It is characterized by receiving information about whether or not to acquire and restore a new content element set or content element based on the information. 55. A receiving unit that receives a transport stream, an operation receiving unit that receives an operation of an operator, and at least desired navigation control data and content elements from the received transport stream according to the operation of the operator. A transport decoder that selects and outputs, a decompression decoder that decompresses the output from the transport decoder, a CPU that controls each of the above units, a memory that stores a program that determines the control content of the CPU, and to perform recording. A recording unit of the digital broadcasting receiver, and the program determines the content element to be restored next according to the navigation control data based on the operation accepted by the operation accepting unit, and is repeatedly sent. From the content element set that comes, next The content element to be restored is separated by the transport decoder, decompressed by the decompression decoder to restore and output, and the content element other than the content to be restored next is performed in parallel with the processing. And recording in the recording unit, and if the desired content element determined based on the operation input by the operator has already been recorded, output the content element that has been restored and recorded in advance. CPU
What is characterized by being a program to be executed by. 56. A receiving unit that receives a transport stream, an operation receiving unit that receives an operation of an operator, and at least desired navigation control data and content elements from the received transport stream according to the operation of the operator. Recording a program for causing a CPU that controls a transport decoder that selects and outputs it, a decompression decoder that decompresses the output from the transport decoder, and a recording unit for recording to execute a reception process Based on the operation accepted by the operation accepting unit, the content element to be restored next is determined according to the navigation control data, and the content element set is repeatedly restored from the repeatedly sent content element set. Content elements that should be separated by transport decoder Then, the process of decompressing by the decompression decoder to output and restoring, the process performed in parallel with the process to restore and record the content element other than the content to be restored next to the recording unit, and the operator If the desired content element determined based on the operation input of is already recorded, the CPU outputs the content element that is restored and recorded in advance.
A recording medium recording a program to be executed by. 57. A digital broadcast transmitting apparatus for transmitting a set of linked content elements, wherein a plurality of content elements are set as a set, and the content element set is repeatedly transmitted, and among the plurality of content elements. , Repeatedly sending one or more navigation control data for controlling which is output, and for the entire content element set or each content element,
A digital broadcast transmission device that transmits an expiration date or a version in association with each other. 58. A set of linked content elements is broadcast from the transmitting side, and the receiving side selects and outputs the content element from the set of transmitted content elements, and a viewer operation input is performed. In the digital broadcasting method, it is possible to switch the content element to be selected in accordance with the above, wherein the transmission side sets a plurality of content elements as one set, repeatedly transmits the content element set, and Of these, the navigation control data for controlling which is output is repeatedly transmitted, and the receiving side receives the transmitted data, and based on the operation of the operator, according to the navigation control data. , The content element to be restored next is determined, and the content element to be restored next from the content element set repeatedly A content element to be selected is selected, restored, and output, and other content elements are restored and recorded in parallel with the process of selecting and restoring the desired content element determined based on the operation input of the operator. And a desired content element determined based on an operation input by the operator is already recorded, a digital broadcasting method that outputs the content element that is restored and recorded in advance. 59. A set of content elements linked to each other by the description of the content element itself is broadcast by a transmitting device, and the receiving device selects a content element from the set of transmitted content elements. Output,
What is claimed is: 1. A digital broadcasting system capable of switching a content element to be selected according to a viewer's operation input, the digital broadcasting system including a transmitting device and a receiving device described below: The transmitting device includes a plurality of content elements. The content element set is repeatedly transmitted as one set, and the receiving device receives the received data by a receiving unit that receives the transmitted data, an operation receiving unit that receives an operation of an operator, and an operation receiving unit. Based on the operation, the content element to be restored next is determined according to the link information in the content element, and the content element to be restored next is selected from the repeatedly sent content element set and restored and output. And a restoring unit that restores the desired content element determined based on the operation input of the operator. In parallel with the process of selecting and restoring, if the process of restoring and recording other content elements is performed, and the desired content element determined based on the operation input of the operator is already recorded, , Outputting the content element that has been restored and recorded in advance. A digital broadcast receiving apparatus capable of switching a content element to be selected according to an operation input by a viewer, comprising a receiving unit for receiving transmitted data, and an operation of the operator. Based on the operation accepting unit that accepts and the operation accepted by the operation accepting unit, the content element to be restored next is determined according to the link information in the content element, and next from the repeatedly sent content element group, A restoring unit that selects a content element to be restored, restores the output, and outputs the selected content element, and the restoring unit performs a process of selecting and restoring a desired content element determined based on an operation input of the operator. , Other content elements are restored and recorded, and the desired content element determined based on the operation input of the operator has already been recorded. If the content element is present, the content element previously restored and recorded is output. 61. The broadcasting system according to any one of claims 29 to 39, wherein the transmitting device sets recording processing information as a basis for determining whether or not to perform recording processing on the receiving device side as a whole of a set of content elements. , An individual content element, a set of navigation control data, or a transmission associated with individual navigation control data. 62. The broadcasting system according to claim 61, wherein, as the recording processing information, the transmitting device transmits recording necessity information indicating necessity of recording processing. 63. The broadcasting system according to claim 61, wherein the transmitting device transmits version upgrade frequency information as the recording processing information. 64. The receiving device according to claim 40, wherein the restoring unit determines whether to record the content element or the navigation control data based on the recording processing information sent from the transmitting device. Characterized by judgment. 65. The receiving apparatus according to claim 64, wherein the restoring unit determines whether to record the content element or the navigation control data based on the recording necessity information sent from the transmitting apparatus. What is characteristic. 66. The broadcasting system according to claim 64, wherein the restoration unit determines whether to record the content element or the navigation control data based on the upgrade frequency information sent from the transmission device. What is characteristic. 67. A digital broadcast transmitting apparatus for transmitting a set of linked content elements, wherein a plurality of content elements are set as a set, and the content element set is repeatedly transmitted, and among the plurality of content elements. , Repeatedly sending one or more navigation control data for controlling which is output, and for the entire content element set or each content element,
A digital broadcast transmission device that associates and transmits recording processing information.