JPH11187336A - Digest data recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To record the digest edition of such program a viewer expects. SOLUTION: This recorder is provided with a header extracting part 102 extracting a header from a packet, a plural-program digest video recording designating means 601 designating the video recording of plural programs and digests, a transmission control data decoder 604 decoding transmission control data by designation, a comparing device 104 comparing the decoded information and the header, a gate 106 allowing a packet to pass when decoded information coincides with the header, a buffer 602 housing the packet passing through the gate 106, a packet selecting means 603 selecting the packet of the buffer 602 by each program by program information from the decoder 604 and a recording means 107 recording the selected packet by each program.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digest data recording apparatus capable of recording digest version data of a received program used in digital broadcasting such as satellite broadcasting and terrestrial broadcasting.

[0002]

2. Description of the Related Art The configuration of a conventional general digital broadcasting system is shown in FIG. In FIG. 7, on the transmitting side, video, audio, and various data are compressed and encoded by an encoding unit 701, and each of the compression-encoded data is multiplexed by a multiplexing unit 702. Thereafter, the multiplexed data is added with an error correction code by an error correction coding unit 703, and is modulated by a modulation unit 704 to be transmitted to a satellite broadcast,
It is transmitted as terrestrial broadcast or cable broadcast. On the receiving side, on the other hand, the multiplexed data received by satellite broadcasting, terrestrial broadcasting, or cable broadcasting is demodulated by the demodulation unit 711, error-corrected by the error-correction decoding unit 712, and then separated.
Send to 13. The demodulated multiplexed data is separated into video, audio, and various data by a separation unit 713, and is decoded by a decoding unit 714.
Are decoded into respective data and output to an output device corresponding to the respective data, for example, a display, a speaker, a printer, or the like.

[0003] Such a digital broadcasting system (in particular, ISDB: integrated service digital broadcas)
In tig), various services and programs are multiplexed and transmitted, and a function for efficiently extracting a service or program desired by the user from the multiplex is required. In packet transmission, a packet identifier (hereinafter abbreviated as PID) is included in a packet header so that a packet of each multiplexed service can be efficiently separated on the receiving side. As a method of identification, there are a direct designation method and an indirect designation method.

In the direct designation method, services, programs, and PIs
The relationship with D is directly defined, and is suitable when the number of services and programs to be identified in the system is small and fixed. In the indirect designation method, the relationship between services and programs and the PID is indirectly defined by separately transmitted transmission control data, and the number of services and programs to be identified is large (the PID required if fixedly assigned). This is suitable for cases where it is necessary to consider future expandability.

FIG. 8 is a block diagram for explaining transmission control applied to the indirect designation method in the digital broadcasting system described above. In FIG. 8, video, audio, and various data of a program are encoded by an encoding unit 801 and compressed as necessary. The compression-encoded data is divided by the packetizer 802 into a fixed data length suitable for multiplex transmission, and a packet of fixed length of 188 bytes is formed by adding a packet header. Each transmission packet is time-division multiplexed on a packet-by-packet basis by the packet multiplexing unit 803. At this time, transmission control data from the transmission control unit 804 is also multiplexed. The packet multiplexed data is added with an error correction code by an error correction coding unit 805 and output to a modulation unit. On the other hand, on the receiving side, the received and demodulated packet data is temporarily stored in a packet buffer 811, and a packet header added to each packet is extracted by a header extraction unit 812, and program information from a user is also transmitted. , The transmission control data corresponding to the designation is decoded by the transmission control data decoder 813. The packet header extracted by the header extraction unit 812 and the transmission control data decoded by the transmission control data decoder 813 are compared by the comparator 814, and the gate 815 is used only when the program of the packet header matches the specified program.
Is opened, and only the packets of the desired program are selected.

[0006] By the way, digital broadcasting makes it easy to diversify services and programs, so that viewers can search for and select desired services and programs, or view only main parts. Requires great effort. For example, in sports programs such as baseball, soccer, sumo, etc., when scoring or deciding whether to win or lose, or when a popular player appears, or to judge whether a movie is interesting, or a news program If you want to watch the important news in, or the news of the field of interest, you have to watch from the beginning of the program. Conventionally, in order to reduce the effort on the part of the viewer, a device for detecting a scene change or the like on the receiving side based on a change in a video or audio signal of a program and editing and recording a digest version of a sports program or the like. And methods have been proposed. According to this method, it is possible to search for a program that the user wants to view later, or to view only the main part, thereby reducing the time and effort of the viewer.

[0007]

However, in the apparatus and method for editing and recording a digest version as described above,
Since scene changes are detected based on video and audio signal changes, they are automatically determined according to the signal change conditions.For example, many unnecessary scenes are included,
For example, there is no point scene,
There is a problem that the digest version of the program content that the viewer expects is not always often obtained.

The present invention has been made in consideration of the problems of a conventional apparatus and method for editing and recording such a digest version, and a digest data recording apparatus capable of recording a digest version of program contents expected by a viewer. The purpose is to provide.

[0009]

According to the first aspect of the present invention, transmission control data including program information for identifying program data and digest information for extracting digest data is added, and multiplexing is performed. Header extracting means for extracting a packet header from the packet data of the encoded received data, program digest recording designating means for designating recording of a desired program and digest data of the program, and designation of the program digest recording designating means. Transmission control data decoding means for decoding program information and digest information of the added transmission control data based on the
Comparing means for comparing the decoded program information and digest information with the extracted packet header; and, as a result of the comparison, when the program information and digest information match the packet header, a gate for passing the packet data; Recording means for recording the packet data that has passed through the gate.

According to a second aspect of the present invention, the transmission control data including program information for identifying program data and digest information for extracting digest data is added, and the multiplexed coded reception data is added. Header extracting means for extracting a packet header from the packet data, a plurality of desired program and a plurality of program digest recording specifying means for specifying recording of digest data of each of the programs, and a plurality of program digest recording specifying means for specifying the plurality of program digest recording specifying means. Transmission control data decoding means for decoding the program information and the digest information of the added transmission control data, and comparing means for comparing the decoded program information and the digest information with the extracted packet header,
As a result of the comparison, if the program information and the digest information match the packet header, a gate for passing the packet data, a buffer for temporarily storing the packet data passing through the gate, and the program information from the transmission control data decoding means. A digest data recording device comprising: packet selection means for selecting packet data stored in a buffer for each program based on the packet data; and recording means for separating and recording the selected packet data for each program.

According to a fourth aspect of the present invention, transmission control data including program information for identifying program data and digest information for extracting digest data is added, and the multiplexed encoded reception data is added. Header extracting means for extracting a packet header from the packet data, program recording designating means for designating recording of a desired program, digest recording designating means for designating digest data recording of a desired program, and program recording designating means. Transmission control data decoding means for decoding the program information and the digest information of the added transmission control data based on the designation, comparing means for comparing the decoded program information with the extracted packet header, As a result, if the program information matches the packet header, the first The first recording means for recording the packet data passing through the first gate, the digest recording time specified by the digest recording specifying means, and the digest recording time decoded from the digest information decoded by the transmission control data decoding means. A digest recording time extracting means for extracting, a second gate for passing the packet data passing through the first gate, and a packet data for passing the second gate based on the extracted digest recording time. And a second recording unit for recording.

According to a fifth aspect of the present invention, transmission control data including program information for identifying program data and digest information for extracting digest data is added, and the multiplexed encoded reception data is added. Header extracting means for extracting a packet header from the packet data, program recording designating means for designating recording of a desired program, digest recording designating means for designating digest data recording of a desired program, and program recording designating means. Transmission control data decoding means for decoding the program information and the digest information of the added transmission control data based on the designation, comparing means for comparing the decoded program information with the extracted packet header, As a result, if the program information matches the packet header, a gate for passing the packet data; Recording means for recording packet data passing through the gate of the, digest recording time extraction means for extracting the recording time of the digest from the digest information decoded by the transmission control data decoding means, by the designation of the digest recording designation means, Recording time storage means for storing the extracted digest recording time in chronological order, and digest extracting means for extracting digest data from packet data recorded in the recording means based on the stored digest recording time. And a digest data recording device comprising:

According to a sixth aspect of the present invention, there is provided a multi-encoded reception data to which transmission control data including program information for identifying program data and digest information for extracting digest data are added. Header extracting means for extracting a packet header from the packet data, program recording designating means for designating recording of a desired program, digest recording designating means for designating digest data recording of a desired program, and program recording designating means. Transmission control data decoding means for decoding the program information and the digest information of the added transmission control data based on the designation, comparing means for comparing the decoded program information with the extracted packet header, As a result, if the program information matches the packet header, the first game through which the packet data is passed. When a packet storage means for temporarily storing the packet data that has passed through the first gate,
Digest recording time extracting means for extracting the recording time of the digest from the digest information decoded by the transmission control data decoding means according to the specification of the digest recording specifying means, and recording time adjusting means for adjusting the recording time of the extracted digest A second gate for passing the packet data stored in the packet storage means based on the adjusted digest recording time; and a second gate for passing the packet data.
Recording means for recording the packet data that has passed through the gate.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings showing an embodiment. (First Embodiment) FIG. 1 is a configuration diagram showing a digest data recording apparatus according to a first embodiment of the present invention. This digest data recording device includes a packet buffer 10 for temporarily storing input packet data.
1. A header extraction unit 102 for extracting a packet header from an input packet, a program digest recording designating unit 105 for designating a program desired by the user and a digest recording designation, and specifying the program based on the designation of the program digest recording designating unit 105. The transmission control data decoder 103 decodes the transmission control data added to the input packet corresponding to the input packet, the information included in the packet header extracted by the header extraction unit 102, and the program decoded by the transmission control data decoder 103. Comparator 104 that compares the information and the digest information. As a result of the comparison by the comparator 104, when the header information matches the program and the digest information,
It comprises a gate 106 for passing the packet data stored in the packet buffer 101, and a recording means 107 for recording the packet data passing through the gate 106.

The present invention is based on the premise that the transmission side newly adds digest information to the transmission control data used to define the relationship between the program and the PID described in the conventional example. Specifically, for example, an MPEG-2 system (ITU-TH.222.0, ISO / IEC138)
(Desc) in the PMT (program map table) of the PSI (program specification information) specified in 18-1).
(descriptor) indicating the digest information is added to the (riptor), and ON / OFF of the digest output time is specified to provide the time management information of the output.

P defined by the MPEG-2 system
In addition to PMT, SI includes PAT (Program Association Table), CAT (Conditional Access Table), and NIT (Network Information Table). In MPEG-2, sections are used to efficiently receive and separate these information. It specifies that transmission control information be transmitted in a format. FIG. 9 shows the PMT
FIG. 4 is a diagram showing a data structure of a program map section in FIG. 5, where an area of a program number 901 corresponds to each program of a channel, and a digest descri is included in a descriptor 902.
Insert ptor. As the assignment of the digest descriptor, for example, 0x4 in FIG.
A range of 4-0xFD is specified, and the digest reproduction output time is turned ON and OFF (on_PTS, off_P) in the digest descriptor data configuration shown in FIG.
TS) and so on. As a result, on the broadcast service side, competition between programs is expected to be intensified due to the increase in digital channels, but there is an advantage that differentiation from other programs becomes possible by providing information desired by viewers.

Next, the operation of the digest data recording apparatus according to the first embodiment will be described with reference to the drawings.

First, transmission control data including program information for identifying program data and digest information for extracting digest data is added, and video and audio data and the like are encoded and multiplexed. After being received and demodulated, the packet is temporarily stored in the packet buffer 101 and a packet header is extracted from the packet data by the header extracting unit 102. Further, in response to a program and digest recording instruction from the user, the program digest recording designating unit 105 designates the transmission control data decoder 103 to program and digest recording. Then, the transmission control data decoder 103 decodes the program information and the digest information corresponding to the designated program and the digest recording from the transmission control data.

Next, the header information extracted by the header extraction unit 102 and the information decoded by the transmission control data decoder 103 are compared by a comparator 104, and the header information is used as program information and digest information, that is, designated. The gate 106 is opened only when it matches the time management information of the reproduced output of the program and the digest. Thus, gate 1
The packet data that has passed through the recording unit 10 is recorded as digest data using a recording medium such as a digital VTR, an optical disk, a hard disk, or a DVD-RAM.
7 recorded. (Second Embodiment) FIG. 2 is a configuration diagram showing a digest data recording apparatus according to a second embodiment of the present invention. The basic configuration of the digest data recording apparatus of the present embodiment is the same as that of the above-described first embodiment, and a description from the input of a packet to the passage through the gate 106 will be omitted. The difference is in the method of recording the digest data after passing through the gate 106. That is, in the present embodiment, the digest data from gate 106 is first decoded by decoder 201, and
After the data is converted into analog data by the A converter 202, the data is recorded in the analog recording means 203. According to this method, a conventional analog recording device can be used for the recording means 203, so that it is not necessary to prepare a new digital recording device, and the cost can be reduced. (Third Embodiment) FIG. 3 is a configuration diagram showing a digest data recording apparatus according to a third embodiment of the present invention. This digest data recording device has a packet buffer 1 for temporarily storing input packet data as a configuration for recording a whole program desired by a user.
01, a header extracting unit 102 for extracting a packet header from an input packet, a program recording designating unit 301 for designating recording of a program desired by the user, and a program recording designating unit 30 thereof.
1, the transmission control data decoder 302 that decodes the transmission control data added to the input packet corresponding to the specification, the header information extracted by the header extraction unit 102, and the transmission control data decoder 103. A comparator 303 for comparing the decoded program information with the decoded program information; as a result of the comparison by the comparator 303, if the header information and the program information match, a first gate 304 for passing the packet data stored in the packet buffer 101 , And the first gate 30
First recording means 3 for recording packet data passing through 4
05 is provided. Therefore, the entire program is recorded in the first recording means 305.

Also, as a configuration for recording only digest data, when a user desires digest recording, the program receives digest information from the program recording designating unit 301 and designates digest recording of the program. , From the transmission control data decoder 302,
Upon receiving the decrypted digest information of the program, the digest recording time extracting means 307 extracts the digest recording time based on the designation of the digest recording designating means 306, and the recording time of the digest extracted by the digest recording time extracting means 307. , A second gate 308 that passes the packet data of the program that has passed through the first gate 304, and a second recording unit 309 that records only the packet data that has passed through the second gate 308.

Next, the operation of the digest data recording apparatus according to the third embodiment will be described with reference to the drawings.

First, packet control data to which transmission control data including program information and digest information is added, and video and audio data are encoded and multiplexed are received and demodulated, and then temporarily stored in the packet buffer 101. At the same time, the packet header is extracted by the header extracting unit 102. Further, in response to a program and digest recording instruction from the user, the program recording designation means 30
1 designates a program for the transmission control data decoder 302, and the digest recording designation means 306 designates digest recording for the digest recording time extraction means 307. Then, the transmission control data decoder 302
The program information and the digest information corresponding to the designated program recording are decoded from the transmission control data, and the digest information is sent to the digest recording time extracting means 307.

Next, the header information extracted by the header extraction unit 102 and the program information decoded by the transmission control data decoder 302 are compared by the comparator 303, and only when the header information matches the specified program. , The first gate 304 is opened. The packet data that has passed through the first gate 304 is recorded as program data in a first recording unit 305 using a recording medium such as a digital VTR, an optical disk, a hard disk, or a DVD-RAM.

On the other hand, when the digest recording is specified and the digest information is received from the transmission control data decoder 302, the digest recording time extracting means 307 records which part of the program as which digest based on the information. That is, the recording start time and the recording end time of the digest version are extracted, and the second gate 308 is opened according to the extracted time information. The packet data that has passed through the second gate 308 is used as digest data of a program recorded in the first recording unit 305 as a digital VTR, an optical disk, a hard disk,
Second recording means 309 using a recording medium such as a VD-RAM
Will be recorded.

As described above, in the present embodiment, since the entire program is recorded simultaneously with the recording of the digest version, if the user wants to see the digest version and then want to see a little before and after, or watch the entire version. It can be used when you want.

The first recording means 305 and the second recording means 309 may be provided as separate devices, or one device may be used by dividing the area.

When the first recording means 305 and the second recording means 309 are constituted by separate devices, the first recording means 305 may be a tape system or an optical disk system most suitable for long-time recording, and the second recording means It is more preferable that 309 be a hard disk system or the like that can be accessed at high speed. (Fourth Embodiment) FIG. 4 is a configuration diagram showing a digest data recording apparatus according to a fourth embodiment of the present invention. In FIG. 4, those given the same reference numerals as those in FIG. 3 described above have the same functions, and a description thereof will be omitted. still,
The recording means 401 is equivalent to the first recording means 305 in FIG.

In the digest data recording apparatus according to the present embodiment, after the packet data is inputted, the recording means 40
The operations from the time when the whole program of the program designated as No. 1 is recorded to the time when the transmission control data is decoded and the digest recording time is extracted are the same as those in the third embodiment.

In FIG. 4, the recording time accumulation means 402
Stores the digest recording time extracted by the digest recording time extracting means 307 in a memory or the like in chronological order.
Numeral 03 has a buffer inside, and the recording time accumulating means 40
The digest data is extracted from the full-length program data recorded in the recording means 401 based on the plurality of digest recording times accumulated in the recording section 2, and is temporarily output to the buffer while being temporarily stored in a buffer.
Thereby, the digest version can be continuously viewed in a short time. Incidentally, as the recording means 401, a long-time storage hard disk or the like capable of high-speed data access is suitable. (Fifth Embodiment) FIG. 5 is a block diagram showing a digest data recording apparatus according to a fifth embodiment of the present invention. In FIG. 5, those given the same reference numerals as those in FIG. 4 described above have the same functions, and a description thereof will be omitted.

In the digest data recording apparatus of the present embodiment, the first gate 3
The operations from the passage through the transmission line 04 to the extraction of the digest recording time through the decoding of the transmission control data are the same as those of the fourth embodiment.

In FIG. 5, the packet storage means 501
Is composed of storage means such as a memory or a hard disk which can be accessed at a high speed, and stores packet data of several seconds to several tens of seconds. The recording time adjustment unit 502 sets the recording start time of the digest data from several seconds to several seconds based on the recording time information from the digest recording time extraction unit 307.
This is for shifting forward by about several tens of seconds.

According to this configuration, the second gate 308 allows the data stored in the packet storage means 501 to pass through a time several seconds to several tens of seconds earlier than the digest recording start time transmitted as transmission control data. The recording means 107 records data including data several seconds to several tens of seconds before the digest data corresponding to the extracted digest recording time.

In this way, when the program provided with the digest information is, for example, a live broadcast of a live program, the insertion of the digest information on the transmitting side is delayed by several seconds, and a decisive scene is generated. Even if it does not, the digest data from several seconds to several tens of seconds before the recording start time indicated by the digest information is recorded, so that a part that would normally be overlooked can be seen. In addition, even if it is not a live program, it can be used when it is desired to lengthen the recording time of the digest data on the receiving side. Furthermore, if the recording time adjustment by the recording time adjustment means 502 is configured to be changeable, the recording time can be lengthened or shortened as necessary, and the user's desire can be flexibly accommodated. (Sixth Embodiment) FIG. 6 is a block diagram showing a digest data recording apparatus according to a sixth embodiment of the present invention. In the present embodiment, the digest data recording apparatus shown in FIG. 1 has a configuration capable of supporting a plurality of programs. In other words, in the multi-channel era, if you want to watch multiple baseball broadcast programs in a digest version, and you want to watch multiple programs that overlap in time, you can record the digest version of each program at the same time. And

In FIG. 6, a plurality of program digest recording designation means 601 designates a plurality of programs desired by the user and digest recording of those programs, and sends the information to the transmission control data decoder 604. The transmission control data decoder 604 decodes the transmission control data of the input packet based on the information, sends the decoded information to the comparator 104, and sends the program information to the packet selection unit 603.

The comparator 104 compares the header information extracted by the header extraction unit 102 with the information from the transmission control data decoder 604 as in the case of FIG. 1, and the header information matches the program information and the digest information. Only when this is done, the gate 106 is opened. At this time, the packet data that has passed through the gate 106 is, of course, temporarily stored in the buffer 602 in the order of input, not for each program. That is, since a plurality of programs are designated, the packets that pass through the gate 106 and are stored in the buffer 602 are stored in chronological order, and the programs are stored in different states.

[0036] The packet selection means 603, based on the program information from the transmission control data decoder 604, stores in the buffer 6
02 and the recording means 107 by selecting packets for each program.
Then, the digest data is sorted and recorded. As a result, digest recording of a plurality of programs is instructed at the same time,
It is possible to cope with a case where packets of a plurality of programs are input simultaneously.

As described above, according to the present invention, the viewing time of the user is limited, but a plurality of desired broadcasts can be enjoyed in a short time, or the digest data can be retrieved by searching the digest data. You can select the scene or program you want.

By adding the digest data recording apparatus of any of the above embodiments to, for example, the multiplexed signal separation section 713 on the receiving side in FIG. 7, digital broadcast having the functions described in the present invention can be achieved. A receiving apparatus can be configured, and it is possible to cope with multi-channel digital broadcasting.

[0039]

As apparent from the above description, according to the present invention, by controlling the passage of packet data on the receiving side based on the digest information added to the transmission control data on the transmitting side, the viewer can It has the advantage that it can record a digest version of the expected program content.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a digest data recording device according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram showing a digest data recording device according to a second embodiment of the present invention.

FIG. 3 is a configuration diagram showing a digest data recording device according to a third embodiment of the present invention.

FIG. 4 is a configuration diagram showing a digest data recording device according to a fourth embodiment of the present invention.

FIG. 5 is a configuration diagram showing a digest data recording device according to a fifth embodiment of the present invention.

FIG. 6 is a configuration diagram showing a digest data recording device according to a sixth embodiment of the present invention.

FIG. 7 is a block diagram of a conventional digital broadcasting system.

FIG. 8 is a block diagram for explaining transmission control in a conventional digital broadcasting system.

FIG. 9 is a diagram showing a data structure of a program map section defined in the MPEG-2 system.

FIG. 10 Descript specified in MPEG-2 system
It is a figure showing a list.

FIG. 11 is a diagram showing a data structure of a digest descriptor in the present invention.

[Explanation of symbols]

 Reference Signs List 101 packet buffer 102 header extraction unit 103 transmission control data decoder 104 comparator 105 program digest recording designating unit 107 recording unit 201 decoder 301 program recording designation unit 306 digest recording designation unit 307 digest recording time extraction unit 402 recording time accumulation unit 403 Digest extraction means 501 Packet storage means 502 Recording time adjustment means 601 Multi-program digest recording designation means 603 Packet selection means

Claims (8)

[Claims] The transmission control data including the program information for identifying the program data and the digest information for extracting the digest data are added, and the packet header of the multiplex-encoded packet data of the received data is added. Header extraction means for extracting a desired program and a digest data designating means for designating digest data of the desired program, and the transmission control data of the added transmission control data based on the designation of the program digest recording designating means. Transmission control data decoding means for decoding program information and digest information, comparison means for comparing the decoded program information and digest information with the extracted packet header, and a result of the comparison, the program information and digest information If the packet matches the packet header, the packet A digest data recording apparatus, comprising: a gate through which data passes; and recording means for recording packet data passing through the gate. 2. A packet header from input packet data of received data to which transmission control data including program information for identifying program data and digest information for extracting digest data is added. Header extraction means for extracting a plurality of desired programs and a plurality of program digest recording designation means for designating recording of digest data of each of the programs; and the plurality of added programs based on the designation of the plurality of program digest recording designation means. Transmission control data decoding means for decoding the program information and the digest information of the obtained transmission control data, comparison means for comparing the decoded program information and the digest information with the extracted packet header, and a result of the comparison, The program information and digest information match the packet header The packet data passing through the gate, a buffer for temporarily storing the packet data passing through the gate, and the packet data stored in the buffer based on the program information from the transmission control data decoding means. A digest data recording apparatus, comprising: packet selection means for selecting each program; and recording means for separating and recording the selected packet data for each program. 3. The recording means records a decoder that decodes input packet data, a D / A converter that converts the decoded digital data into analog data, and records the converted analog data. 3. The digest data recording device according to claim 1, further comprising a recording unit. 4. A packet header which is added with input transmission control data including program information for identifying program data and digest information for extracting digest data, and packet data of multiplex-encoded received data. Header extracting means for extracting the desired program, program recording specifying means for specifying the recording of the desired program, digest recording specifying means for specifying the recording of the digest data of the desired program, and based on the specification of the program recording specifying means. ,
Transmission control data decoding means for decoding the program information and the digest information of the added transmission control data, comparison means for comparing the decoded program information with the extracted packet header, and a result of the comparison; When the program information matches the packet header, a first gate through which the packet data passes, first recording means for recording the packet data passing through the first gate, and digest recording designating means The digest recording time extracting means for extracting the digest recording time from the digest information decoded by the transmission control data decoding means, and the first gate based on the extracted digest recording time. And a second gate for passing the packet data passing through the second gate. Digest data recording apparatus characterized by comprising a second recording means for recording the packet data. 5. A packet header from input packet data of received data to which transmission control data including program information for identifying program data and digest information for extracting digest data is added. Header extracting means for extracting the desired program, program recording specifying means for specifying the recording of the desired program, digest recording specifying means for specifying the recording of the digest data of the desired program, and based on the specification of the program recording specifying means. ,
Transmission control data decoding means for decoding the program information and the digest information of the added transmission control data, comparison means for comparing the decoded program information with the extracted packet header, and a result of the comparison; When the program information matches the packet header, the transmission control data decoding is performed by designating the gate for passing the packet data, recording means for recording the packet data passing through the gate, and the digest recording designating means. A digest recording time extracting means for extracting the digest recording time from the digest information decoded by the means, a recording time accumulating means for accumulating the extracted digest recording times in time series, and the accumulated recording time. A packet recorded in the recording means based on the digest recording time; Digest data recording apparatus characterized by comprising a digest extracting means for extracting the digest data from over data. 6. Transmission control data including program information for identifying program data and digest information for extracting digest data which have been input, and packet headers from multiplex-encoded packet data of received data. Header extracting means for extracting the desired program, program recording specifying means for specifying the recording of the desired program, digest recording specifying means for specifying the recording of the digest data of the desired program, and based on the specification of the program recording specifying means. ,
Transmission control data decoding means for decoding the program information and the digest information of the added transmission control data, comparison means for comparing the decoded program information with the extracted packet header, and a result of the comparison; When the program information matches the packet header, a first gate for passing the packet data, a packet storage means for temporarily storing the packet data passing through the first gate, By specifying, from the digest information decoded by the transmission control data decoding means, a digest recording time extracting means for extracting the recording time of the digest, a recording time adjusting means for adjusting the recording time of the extracted digest, and Based on the adjusted digest recording time, the packet storage means A second gate for passing the product packet data, the digest data recording apparatus characterized by comprising a recording means for recording the packet data which has passed through the second gate. 7. The digest data recording according to claim 1, further comprising a packet buffer for temporarily storing the received packet data at an input side of the gate or the first gate. apparatus. 8. A digital broadcast receiving apparatus comprising the digest data recording apparatus according to claim 1.