JP2002218344A - Digital broadcasting device, digital broadcasting reception method, digital broadcasting reception program, and computer-readable recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a digital broadcasting receiver for outputting a DLT, while including the DLT in a partial TS. SOLUTION: In the digital broadcasting receiver, a transport decoder 204 separates a PAT, a PMT, and a DLT to be downloaded according to the mention of a DCT, and writes them at a main RAM 209. A CPU 207 updates the PAT and PMT, so that the DLT can be acquired. The CPU 207 generates a TS packet by setting a control program body included in the DLT in an ES-format bit stream. The transport decoder 204 reports the updated PAT and PMT, and the generated TS packet to a digital I/F 212 as a partial TS. The digital I/F 212 outputs the partial TS to an external DVHS deck 214. The DVHS deck 214 records the partial TS on a DVHS tape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a digital broadcast receiving apparatus, and more particularly to a digital broadcast receiving apparatus that outputs a partial transport stream to a digital recording / reproducing apparatus and inputs the stream from the digital recording / reproducing apparatus.

[0002]

2. Description of the Related Art At present, MPEG (Moving Pic) is used.
cure Image Coding Experts
Group transport stream (hereinafter "TS")
In the digital broadcasting using such a method, images, sounds, and other various data are broadcast.

[0003] The data includes a new control program for controlling the digital broadcast receiving apparatus. When downloading this control program, the digital broadcast receiving apparatus temporarily stores the received control program in a volatile RAM, and then writes it in a nonvolatile flash ROM. In addition, in order to connect a digital recording / playback device to the digital broadcast receiving device and record and play back digital broadcast images and sounds, the digital broadcast receiving device transfers partial TSs among the received TS to the digital recording / playback device. Output.

[0004] Here, the partial TS refers to a bit stream obtained by removing from the MPEG-2 TS packet a TS which is not related to one or several specially selected programs.

[0005]

By the way, as described above, even in the related art, the video, audio, and data streams transmitted in a state where the presence is described in a PMT (Program Map Table) conform to the partial TS standard. Output is possible. However, a control program or the like transmitted in another format such as a section not described in the PMT cannot be output as it is because it is contrary to the standard of the partial TS. The standard of the partial TS is ARIB STD-B1 "CS Digital Broadcasting Receiver Standard (Desirable Specification)" issued by the Radio Industry.
It is detailed in the third edition.

Further, while the digital broadcast receiving apparatus is writing the control program stored in the RAM into the flash ROM, data cannot be written into the RAM, so that the control program may not be received.
Therefore, in order to receive the control program that could not be received, it is necessary to wait until the control program is transmitted in the next cycle. Therefore, in order to download the control program in a short time, it is necessary to mount a RAM for the size of the transmitted control program.

[0007] In view of the above problems, the present invention provides a partial T
It is an object of the present invention to provide a digital broadcast receiving apparatus capable of outputting data transmitted in another format such as a control program according to the S standard.

[0008]

According to the present invention, there is provided a digital broadcast receiving apparatus comprising a receiving section for receiving a transport stream, and outputting and recording a partial transport stream to a digital recording / reproducing apparatus. An apparatus, comprising: a first separation unit configured to separate data different from an elementary stream format from a received transport stream; and a first separation unit configured to generate a first transport stream packet in which the separated data is formed into an elementary stream format. 1 and the first
Generating means for generating a second transport stream packet describing information for specifying the transport stream packet of the first and second transport stream packets, and a partial transport including the transport stream packet generated by the first and second generating means. Output means for outputting a port stream.

[0009]

Embodiments of a digital broadcast receiving apparatus according to the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 is a schematic diagram for explaining an outline in which a digital broadcast receiving apparatus according to the present invention receives a transport stream.

[0010] A DLT (DownL) that records video data, audio data, and a control program of a program from the broadcast station 101 is recorded.
oad Table) and PSI (Program S)
A transport stream multiplexed with specific information is received by a user's home antenna 103 via a satellite 102 and input to a digital broadcast receiving apparatus 104. Digital broadcast receiving device 10
The video data and the audio data separated from the transport stream received at step 4 are output from the monitor 105.

FIG. 2 is a block diagram of a digital broadcast receiving apparatus according to a first embodiment of the present invention. The digital broadcast receiving device 104 includes a receiving unit 201, a tuner 202, a demodulating unit 203, a transport decoder 204, an audio decoder 205, an image decoder 206, and a CPU 207.
, Flash ROM 208 and main RAM 209
, An IC card 210, a screen synthesizing unit 211, and a digital I / F 212, and each unit is connected by a CPU bus 213 as shown in the figure.

The digital I / F 212 is connected to an external digital recording / reproducing device, for example, a DVHS (Digital Video Home System) deck 214. The audio decoder 205 is connected to an external speaker 215. The screen synthesizing device 211 is connected to the external monitor 105. In the present embodiment, a case will be described in which a control program multiplexed in a TS transmitted from the satellite 102 is received by the digital broadcast receiving apparatus 104 and recorded on a DVHS tape of the DVHS deck 214.

Accordingly, a normal broadcast program is received, decoded by the transport decoder 204 into image data and audio data, the image data is displayed on the monitor 105 via the image decoder 206, and the audio data is transmitted to the audio decoder 205. The broadcast of the program output to the speaker 215 via the speaker 215 is not the subject of the present application, and thus the description is omitted. The receiving unit 201 receives a signal of a user's operation of a remote controller (not shown) and notifies the CPU 207 of the signal. The user sees that the download of the control program is selectable on the display screen displayed on the monitor 105, and instructs the download by operating the remote controller. The receiving unit 201 receives a download instruction signal from the remote controller,
07 is notified of a download instruction.

The tuner 202 receives the input of the modulated wave of the TS received by the antenna 103 and outputs it to the demodulation section 203. The demodulation unit 203 demodulates the modulated wave input from the tuner 202 and outputs the multiplexed TS to the transport decoder 204. Transport decoder 20
4 is a DCT (Download) by the CPU 207.
When the PID of the dControl Table is set, the DCT is separated and written into the main RAM 209, and the CPU 207 is notified.

FIG. 3 is a diagram showing a data structure of the DCT. DCT 301 is identified by table_id 307, and DL
Information for acquiring T is described as download_info 308. DLT is a digital broadcast receiving device 10
4 describes the control program, download # i
Since nfo 308 describes maker # id 302 and model # id 303 of the digital broadcast receiving apparatus to which the control program is applied, whether or not it indicates a DLT in which a control program compatible with the digital broadcast receiving apparatus 104 is described Is determined by the maker_id 302 and the model_id 302. Further, the version of the control program is version # id3
04, the same version as that currently stored in the flash ROM 208 of the digital broadcast receiving apparatus 104 is not required, and there is no point in acquiring the DLT unless it is a different version.

The DL_PID 305 of the DCT 301 indicates the PID of the DLT. ECM # PID309 of DCT301
Is the ECM (Entitleme) corresponding to this DLT
ntControl Message). The ECM is a table for transmitting common information including information such as a key for descrambling. The transport decoder 204 controls the P
AT (Program Association Ta)
When the PID of ble) is set, the PAT is separated, written into the main RAM 209, and notified to the CPU 207.

FIG. 4 is a diagram showing a data structure of PAT. The PAT 401 is identified by table_id 404 and describes what service is provided. Note that P
In the AT 401, program # number4 is added to the first loop 405.
02 and program # map # PID403 are described, from which the PID of the PMT is determined. The transport decoder 204 is a PMT (Program Map).
When the PID of Table is set by the CPU 207, the PMT is separated, written into the main RAM 209, and notified to the CPU 207.

FIG. 5 is a diagram showing the data structure of the PMT. The PMT 501 is identified by table_id 506, and describes which TS packet to acquire. PMT50
In the first loop 505, stream # type 502 and elem
ntary # PID 503 and descriptor () 504 are described. These contents are rewritten by the CPU 207 so that the DLT TS packet can be extracted.

The transport decoder 204 has a CPU
When the PID of the ECM is set by 207, the EC
M is separated and notified to the CPU 207. Correspondingly C
A notification of the DLT scramble key is received from the PU 207. When the PDT of the DLT is set by the CPU 207, the transport decoder 204 separates the DLT, decrypts the DLT using the scramble key notified from the CPU 207, writes the DLT in the main RAM 209, and notifies the CPU 207. .

FIG. 6 shows the data structure of the decoded DLT. The DLT 601 is identified by table_id 602, and includes an area in which the control program body indicated by code # date # byte 603 is described and an area in which other header information is described. Lsection # n is included in the header information.
umber 604, which defines section numbers. In addition, CRC (Cyclic Redunda)
Ncy Check) 605 describes the CRC value of the entire section of the DLT 601.

The transport decoder 204 has a CPU
When the PAT 701 (see FIG. 7), the updated PMT 801 (see FIG. 8), and the TS packet obtained by converting the program body of the DLT 601 are notified from the 207, the digital I / F 212 is notified. CPU
Upon receiving a control program download instruction from the receiving unit 201, the transport decoder 204
Is set to the PID “0x0017” of the DCT to instruct DCT separation. D from transport decoder 204
When notified that the CT 301 has been separated, DCT3
Maker # id302 and madel # id303 described in 01
Is determined to match with that of the digital broadcast receiving apparatus 104, and whether the version_id is different from that of the DLT stored in the flash ROM 208. If affirmative, the transp described in DCT 301
instructs the transport decoder 204 to separate the PAT of the frequency band corresponding to the ort # stream # id 310,
The PAT PID “0x0000” is set. If not, it instructs the transport decoder 204 to separate the DCT again.

When notified by the transport decoder 204 that the PAT 401 has been separated, the CPU 207 transmits a service (channel) described in the PAT 401.
, The data of the other service is deleted, and the transport decoder 204 is notified, for example, as shown in FIG. At the same time, program # nu
The PID of the PMT is set in the transport decoder 204 by reading out the mber 402 and the program # map # PID 403.

When notified by the transport decoder 204 that the PMT 501 has been separated, the CPU 207 sets “0x06” for the stream_type 502 described in the PMT 501 and the DCT 301 for the elementary_PID 503.
Are recorded, respectively. Further, the CPU 207
Is downloaded # c in descriptor () 504 of PMT501.
Record ontrol # descriptor.

FIG. 8 shows a specific example of the PMT updated by the CPU 207. In PMT801, download # c
The content of ontrol # descriptor802 is descriptor # ta
g803, descriptor # length804, maker # id805,
Model_id 806, version_id 807, and DLT # size 808 are recorded. maker # id805, model # id806,
The version # id 807 and the DLT # size 808 are the DCT 301
Describe the contents described in model # info 306.
The CPU 207 notifies the transport decoder 204 of the updated PMT 801.

The CPU 207 sets the PID of the ECM in the transport decoder 204, receives the notification of the separated ECM, checks the contract information and the like stored in the IC card 210, and if the check is successful, scrambles the DLT. The key is obtained and the transport decoder 204 is notified. Next, the CPU 207 sets the DL_PID in the transport decoder 204 and instructs the DLT 601 to be separated. Upon receiving notification from the transport decoder 204 that the DLT 601 has been separated, the code of the DLT 601
Lsection # n of # data # byte 602 part and header part
umber 604, recalculate the CRC, and remove T from the elementary stream excluding other headers.
An S packet is generated and notified to the transport decoder 204.

The flash ROM 208 is a nonvolatile memory in which a control program for the digital broadcast receiving apparatus 104 is recorded. A version number is described in the control program, and the DCT 301 separated by the transport decoder 204 by the CPU 207.
It is determined whether the version number is different from the version number. The digital broadcast receiving apparatus 1 having a different version number
The DLT 601 conforming to the DTS 04 is temporarily output to the DVHS deck 214 as a partial TS and recorded on a DVHS tape, and then, as described in the second embodiment,
The HS tape is reproduced and written to the flash ROM 208.

The main RAM 209 is a volatile memory, and the PAT separated by the transport decoder 204
Section data such as 401 is written. The IC card 210 stores contract information and the like.
7, the ECM is collated with the ECM, and if the collation is successful, the scramble key is read. The screen combining unit 211 combines the image signal output from the image decoder 206 and the service information, and causes the monitor 105 to display the combined signal. Monitor 1
In 05, service information indicating that DLT can be downloaded is displayed.

The digital I / F 212 receives the PAT 701, PM notified from the transport decoder 204.
The T801 and the DLT TS packet are output to the DVHS deck 214 as a partial TS. Next, the operation of the present embodiment will be described with reference to the flowchart shown in FIG. First, when a download instruction of the control program is received from the user, the transport decoder 204
The DCT 301 is separated from S (S901).

The CPU 207 controls the separated DCT 301
DLT60 compatible with this digital broadcast receiving apparatus 104
It is determined whether or not 1 is described (S902), and if not, the process returns to S901. At one time, the tuner 202
The modulated wave transmitted from the LT 601 is received (S90).
4). The transport decoder 204 has a PAT 401
Is separated (S905).

The transport decoder 204 has a PMT
501 is separated (S906). The CPU 207 creates a PAT 701 in which information other than any one service is deleted from the separated PAT 401 (S907).
Transport decoder 204 is a separate PAT40
1 is replaced with the created PAT 701 (S90
8).

Next, the CPU 207 executes the TLT
A new PMT in which the contents of the separated PMT 501 are rewritten so that the S packet can be separated from the partial TS.
801 is created. Specifically, set stream # type to PES
It is rewritten to “0x06” or the like indicating Packets (S909). The transport decoder 204 replaces the separated PMT 501 with a new PMT 801 (S910).

Next, the CPU 207 sets the value of the ECM # PID 309 of the DCT 301 in the transport decoder 204, and the transport decoder 204 separates the ECM (S911). CPU 207 is a separate ECM
And the contract information stored in the IC card 210, to obtain a scramble key, and notify the transport decoder 204 (S912).

The CPU 207 sets the PID of the DLT 601 in the transport decoder 204, and the transport decoder 204 separates the DLT 601 (S91).
3). The CPU 207 reconfirms whether or not the separated DLT 601 is suitable for the digital broadcast receiving apparatus 104 (S914). If not, S913
And if it matches, the header part of the DLT 601
Lsection # number604, code # data # byte602 and CRC6
05, and create a TS packet with ES as the
Replace with LT 601 (S915).

Next, the transport decoder 204
D with the replaced PAT701 and PMT801
The digital I / F 212 is notified of the TS packet of the LT 601 (S916). The digital I / F 212 outputs the partial TS to the DVHS deck 214 (S91
7). In the DVHS deck 214, the partial TS is D
Recorded on VHS tape.

The CPU 207 has a DLT 601 for one cycle.
Until is acquired, S913 to S917 are repeated (S918), and the process ends. Note that, in the present embodiment, the DVHS deck 214 is
4 digital I / F 212,
It may be built in the digital broadcast receiving device 104.

Further, although the data is recorded on the DVHS tape by the DVHS deck 214, it may be recorded on a digital recording device such as an AVHDD. Further, if necessary, information on the number of times of reproduction and information indicating that copying is not possible can be included in the PMT record data. Thus, the download data can be recorded on the DVHS tape. In order to store new download data, it is not necessary to mount an extra flash ROM in the digital broadcast receiving apparatus 104.

In this embodiment, the description has been given of the case where the DLT describing the control program described in the section format is included in the partial TS and is output. However, the present invention is not limited to the DLT. May be included in the partial TS and output. Similarly, an EMM (Enti) that describes an automatic display message described in a section format is also provided.
(Tlement Management Message) may be included in the partial TS and output. In this case, in order to obtain the PID of the EMM, CAT (Cond
First, the itional Access Table is separated from the TS. By including the EMM in the partial TS, for example, an automatic display message can be displayed even at the time of so-called "chase-up reproduction".

The EMM is based on "BS Digital Broadcasting Limited Reception System Standard" ARIB STD-B25 1.0
CAT is described in detail in ARIB STD-B10 1.3, "Standard for Program Arrangement Information Used for Digital Broadcasting". Further, D described in the present embodiment
CT and DLT are ARIB STD, the standard for CS digital broadcasting standard shared receivers, issued by the Association of Radio Industries and Businesses.
-B16, detailed in 1.1, PAT, PMT
Is "Program information for digital broadcasting" ARIB
It is described in detail in STD-B10 1.3 version.

(Embodiment 2) The second embodiment is substantially the same as the configuration of the first embodiment, and will be described with reference to the configuration diagram of FIG. However, the digital broadcast receiving device 1
04 is further provided with an external control unit (not shown) connected to the CPU bus 213.
It is connected to the deck 214.

In the present embodiment, D
Upon receiving the reproduction input of the partial TS recorded on the DVHS tape of the VHS deck 214, the control program is stored in the flash ROM 208. The description of the same components as those in the first embodiment is omitted, and the components unique to the present embodiment will be described.

Receiving section 201 receives a download instruction signal by a user's remote control operation, and notifies CPU 207 of a download start instruction. The transport decoder 204 transmits the partial TS notified from the digital I / F 212 to the CPU 20 in the same manner as in the first embodiment.
7, the PAT 701 and the PMT 801 are separated and written into the main RAM 209, respectively. Also, D
The TS packet in which the control program (download data) of the code # data # byte 603 of the LT 601 is described is separated and written into the main RAM.

Upon receiving the notification of the download start instruction from the receiving unit 201, the CPU 207 sends the DVH to the external control unit.
The S-Deck 214 is instructed to give a DVHS tape playback start instruction. The CPU 207 also downloads the download_c of the PMT 801 separated by the transport decoder 204.
Referring to the description of ontrol_descriptor 802, it is determined whether or not a control program to be downloaded to the flash ROM 208 of the digital broadcast receiving apparatus 104 is included in the TS packet of the partial TS.

The CPU 207 stores the DL written in the main RAM 209 by the transport decoder 204.
Whether the control program described in code_data_byte 603 of T601 has a data error is determined by checking the value of CRC605. When detecting a data error, the CPU 207 notifies the external control unit of the error detection. Also, C
The PU 207 monitors the main RAM 209 and determines whether or not the unstored area of the main RAM 209 has been exhausted by the control program written by the transport decoder 204. When the unstored area is exhausted, the external control unit is notified of the fact, and the control program stored in the main RAM 209 is stored in the flash ROM 20.
Post to 8. When the transfer is completed, the external control unit is notified.

When all the control programs (download data) have been written in the main RAM 209, the control programs in the main RAM 209 are transferred to the flash ROM 208. The digital I / F 212 is D
It receives the input of the partial TS reproduced from the VHS deck 214 and notifies the transport decoder 204 of the input.

When notified of a reproduction start instruction from the CPU 207, the external control unit instructs the DVHS deck 214. Upon receiving a notification from the CPU 207 that the unstored area of the main RAM 209 has run out, the DVHS deck 21
4 is instructed to pause the reproduction. Further, upon receiving the notification that the transcription has been completed, it instructs the DVHS deck 214 to release the pause of the reproduction and subsequently input the partial TS.

Upon receiving the error detection notification from the CPU 207, the external control unit instructs the DVHS deck 214 to rewind the DVHS tape and to input a partial TS again. Next, the operation of the present embodiment will be described with reference to the flowchart shown in FIG. First, when the receiving unit 201 receives a download instruction from a user, the external control unit is instructed by the CPU 207 to start downloading (S1001).

The external control unit controls the DVHS deck 214
The reproduction of the VHS tape is instructed (S1002). Digital I / F 212 converts partial TS to DVHS deck 2
14 (S1003). The transport decoder 204 separates the PAT 701 from the main RAM.
209 (S1005), the PMT 801 is separated and written to the main RAM 209 (S1006).

The CPU 207 downloads the PMT 801
It is determined from the content of #control_descriptor 802 whether there is download data conforming to the partial TS (S1007), and if not, the process ends. If there is, the transport decoder 204 separates and acquires the download data from the partial TS (S1008),
The control program is stored in the main RAM 209 (S1
009).

The CPU 207 detects whether there is any data error in the control program written in the main RAM 209 (S1010). When a data error is detected, the fact is notified to the external control unit. The external control unit is a DV
Instruct the HS deck 214 to rewind the DVHS tape (S1011), and return to S1008. The CPU 207
If no data error is detected, it is determined whether or not all the download data is stored in the main RAM 209 (S1012). If all the download data is stored, the contents are transcribed to the flash ROM 208 (S1013), and the process ends I do. If all are not stored, the main R
It is determined whether or not the AM is full (there is no unrecorded area) (S1014). If it is not full, the process returns to S1008. If it is full, the external control unit is notified.

The external control unit controls the DVHS deck 214
Instruct playback pause of the VHS tape (S101)
5). The CPU 207 stores the contents of the download data stored in the main RAM 209 in the flash ROM 2.
08 (S1016). The external control unit receives a notification from the CPU 207 that the transfer of the download data has been completed to the flash ROM 108, and
14 is instructed to resume reproduction of the DVHS tape (S101).
7) Return to S1008.

As described above, the partial TS is recorded on the DVHS tape, and the tape can be reproduced to enable the download. In the present embodiment, the partial TS is output by the digital broadcast receiving apparatus described in the first embodiment, and the DVHS recorded on the DVHS deck is used.
Although it has been described that the tape is reproduced, the operation of distributing and downloading the DVHS tape becomes possible.

Note that the external control unit detects the recording speed of the download data to the main RAM 209 of the transport decoder 204, and determines the D speed in accordance with the recording speed.
The VHS deck may be instructed to change the playback speed of the DVHS tape. Thereby, high-speed downloading can be realized. In the present embodiment,
Although the case where the partial TS is recorded on the DVHS tape has been described, it is needless to say that the partial TS may be recorded on a removable recording medium such as a CD-R.

The DVHS deck 214 of the partial TS described in the first embodiment and the second embodiment.
The recording phase and the reproducing phase will be described again with reference to the schematic diagram of FIG. First, recording phase 11
01, the digital broadcast receiving device (STB) 104
DCT, PAT, P multiplexed and transmitted to TS
Each TS packet of MT, DLT, Video, Audio, and Data is received. Digital broadcast receiving device 104
CPU 207 generates a Data * TS packet in an elementary stream format from the DLT in which the control program is described, in order to include the control program in the partial TS. The Data * TS packet is a new DLT in which the control program body is described. This Data * TS
When the packet is reproduced, a new PAT and a new PMT, PAT * and PMT *, are generated from the PTA and PMT so that the packet can be obtained as a new DLT.

The digital broadcast receiving device 104 is a DVHS
Each TS packet of PAT *, PMT *, and Data * is output to the deck 214 as a partial TS. The DVHS deck 214 records the input partial TS on a DVHS tape. Next, in the reproduction phase 1102, the DV
The partial TS recorded on the DVHS tape is reproduced on the HS deck 214 and transmitted to the digital broadcast receiving apparatus 104 by the P.
Each TS packet of AT *, PMT *, and Data * is output.

In the digital broadcast receiving apparatus 104, the DVH
The partial TS output from the S deck 214 is transferred via the digital I / F 212 to the transport decoder 204.
Is input to In the transport decoder 204, P
AT * and PMT * are decoded and written to the main RAM 209. The CPU 207 uses the PAT * and PMT * stored in the main RAM 209 to determine the Da
It is determined whether or not it is ta *, and if it is suitable, the transport decoder 204 is instructed to separate Data *. The transport decoder 204 is the main RAM2
Write Data * to 09. The CPU 207 checks whether Data * written in the main RAM 209 is correct. If there is an error, re-enter DVHS Deck 2
At 14, the reproduction of the partial TS is started. CPU 20
7 transfers the Data * written in the main RAM 209 to the flash ROM 208 if there is no error.
Note that the Data * recorded in the flash ROM 208
Is a DLT control program body. At this time, when Data * is written to the maximum capacity of the main RAM 208, the external control unit (not shown) instructs the DVHS deck 214 to pause the reproduction, and the flash RO
Waiting for the transfer to M208, reproduction restart is instructed.

As described above, the digital broadcast receiving apparatus 10
No. 4 is a section format DLT that is not allowed to be included in the partial TS according to the ARIB standard as the elementary stream format Data *.
, And once the DVH deck 214
The partial TS is recorded on the S tape. The DVHS tape is played back on the DVHS deck 214, and the control program described in the DLT is downloaded to the digital broadcast receiving apparatus 104.

Therefore, a large-capacity main RAM 209
There is no need to prepare. In addition, when transferring data from the main RAM 209 to the flash ROM 208, the inconvenience of not being able to obtain the DLT is also eliminated, so that a complete control program can be quickly obtained. (Embodiment 3) Next, a digital broadcast receiving apparatus according to Embodiment 3 of the present invention will be described with reference to the block diagram of FIG.

In this embodiment, before writing a new control program into the flash ROM 208, the control program currently stored in the flash ROM 208 is output by including it in the TS packet of the partial TS, and the external D
The data is recorded on a DVHS tape by the VHS deck 214 and a backup process is performed. The difference between the present embodiment and the first embodiment is that the CPU 207 creates a PMT so that the control program stored in the flash ROM 208 can be obtained separately from the partial TS so that the download_control of the PMT can be obtained. #descriptor is described, and the control program output to be included in the partial TS is not a newly separated DLT, but a CPU.
The only thing that is read out from the flash ROM 208 by the 207 is. Therefore, description of each configuration is omitted.

Next, the operation of this embodiment will be described with reference to the flowchart shown in FIG. First, when a user receives an instruction to download a new control program,
The transport decoder 204 converts the TS to the DCT 30
1 is separated and written into the main RAM 209 (S120
1). The CPU 207 determines whether or not the separated DCT 301 includes a description of the DLT 601 compatible with the digital broadcast receiving apparatus 104 (S1202).
Return to 201. At one time, the tuner 202 may
The modulated wave transmitted in T601 is received (S120).
3).

The transport decoder 204 separates the PAT 401 from the TS, writes it in the main RAM 209 (S1204), separates the PMT 501, and
The data is written in M209 (S1205). The CPU 207
A PAT 701 is created by removing information other than one service from the separated PAT 401 (S1206).

The transport decoder 204 replaces the separated 401 with the created PAT 701 (S1).
207). The CPU 207 creates a PMT corresponding to the service described in the PAT 701. Where stream # typ
e = 0x06 (PES Packets), and an arbitrary value is assigned to elementary_PID. In download # control # descriptor, describe the maker # id and model # id of this digital receiver, and
In n_id, the version_id of the control program currently stored in the flash ROM 208 is described (S120).
8).

The transport decoder 204 replaces the separated PMT 501 with the created PMT (S1).
209). Next, the CPU 207 reads the flash ROM 2
08, the control program stored in
Create an LT TS packet. Here, the TS packet includes the control program body, Lsection # number and CRC.
(S1210).

The transport decoder 204 replaces the newly separated DLT with the created DLT TS packet (S1211). Transport decoder 20
4 notifies the digital I / F 212 of the replaced PAT, PMT, and DLT. Note that other TS
The packet is deleted (S1212).

The digital I / F 212 transmits the notified DL
T or the like is output to the DVHS deck 214 as a partial TS (S1213). The DVHS deck 214 records the output partial TS on a DVHS tape.
Thus, the backup processing ends. Thereafter, in the digital broadcast receiving apparatus, the newly separated DLT is written in the main RAM 209 as in the related art, and the flash R
Transcribe to OM208.

At this time, if it is desired to return to the original control program due to the failure of writing to the flash ROM 208 or the user's intention after the download is completed, the DV
Play the DVHS tape recorded on the HS deck 214,
By downloading, it can be restored to its original state. With the above configuration, even if the flash ROM for storing the control program is one bank, it is possible to perform a download resistant to failure.

Further, it is particularly effective for backing up a CA system program which differs for each company. In addition,
In each of the above embodiments, the configuration is shown in the configuration diagram of FIG. 2, but the functions of each component may be realized by a program that causes a computer to perform the functions. Further, this program is recorded on a computer-readable recording medium, and this recording medium is applied to a digital broadcast receiving apparatus having no function of outputting a control program in a partial TS,
The same effect as the present invention can be exerted.

[0067]

As described above, the present invention relates to a digital broadcast receiving apparatus having a receiving section for receiving a transport stream, and outputting and recording a partial transport stream to a digital recording / reproducing apparatus. First separating means for separating a packet different from the elementary stream format from the received transport stream, and first generating for generating a first transport stream packet in which the data of the separated packet is converted to the elementary stream format Means for generating a second transport stream packet describing information for identifying and separating the first transport stream packet; and a second transport stream packet generated by the first and second generating means. Partials composed of transport stream packets It is set to be an output means for outputting the Nsu transport stream. With such a configuration, data different from the elementary stream format that cannot be output according to the standard of the partial TS can be included in the partial transport stream and output. For example, a control program, font / logo data used for screen display, and music distribution data can be included in the partial transport stream.

The transport stream includes a packet in an elementary stream format and a packet in a section format. Packets different from the elementary stream format include first section data described in a section format. Is described,
The second transport stream packet contains information for specifically separating the first transport stream packet from a partial transport stream in a subsequent process. With such a configuration, the first section data described in the first transport stream packet can be effectively used in subsequent processing.

[0069] The second generating means includes a second section data generating unit for generating a packet describing second section data for specifying the first transport stream packet, And a third section data generation unit that generates a packet in which third section data describing port stream packet separation conditions is described. With such a configuration, the first transport stream packet can be reliably acquired from the partial transport stream in the subsequent processing.

Further, the apparatus further comprises second separating means for separating the packet of the fourth section data from the received transport stream, wherein the fourth section data includes:
A separation condition of the first section data packet is described, and the first separation unit separates the first section data packet from one transport stream according to the separation condition. With such a configuration, the packets of the first section data can be separated.

Further, the fourth section data includes:
One transport stream in which a packet of section data on which the second section data and the third section data are based is specified, and the second separation unit determines the transport stream from the specified transport stream. Separating each section data packet that is the basis of the second section data and the third section data, the second and third section data generators generate the second and third section data based on the respective section data. The third section data is to be generated. With such a configuration, the digital recording / playback device can be effectively used,
A digital broadcast receiving apparatus capable of efficiently downloading the first section data can be obtained.

Further, the first generating means decodes the separated first section data using a key, converts the data into a bit stream, and generates a first elementary stream. With such a configuration, when the first section data is encrypted, the bit stream to be included in the partial TS can be decrypted.

The first section data is a DLT (download table) describing a control program.
The second section data is a PAT (Program Association Table) describing what kind of service is provided, and the third section data is a PMT (PMT) describing which transport stream packet to acquire. Program map table), and the fourth section data is a DCT (download control table) multiplexed and transmitted to all transport streams. With such a configuration, the ARIB standard D
The control program described in LT can be included in the partial TS.

Further, the second section data generation unit may be configured to delete information other than any one of the services.
T, and the third section data generator generates P
PES (Packetized) is added to stream # type in MT.
Describe the identifier of the elementary stream (ES), and the PID of the elementary stream (ES) is the PID of the DLT corresponding to the DLT in the DCT.
The output means outputs each packet of the first elementary stream in which the generated PAT, PMT, and data body part of the DLT after decoding are described as a partial transport stream packet. You are going to. With such a configuration, the control program body described in the DLT recorded as the partial TS can be obtained separately during reproduction.

Also, the maker identifier and the model identifier of the digital data receiving apparatus itself are stored, the DLT version identifier currently stored in the flash ROM to which the download table is to be written is read, and the DCT separated by the second separating means is read. Determining means for determining whether the manufacturer identifier and the model identifier described in (1) match those stored therein, and whether the version identifier described in the DCT is different from the read version identifier; and When the means is determined to be no, an instruction means for instructing the second separating means to separate the DLT again is further provided. With such a configuration, a program suitable for the digital broadcast receiving apparatus can be included in the partial TS.

The first section data is an EMM (Entitlement Mana) describing an automatic display message.
gement Message), and the second section data is a PAT describing what kind of service is provided.
(Program association table), the third section data is a PMT (program map table) describing which transport stream packet can be obtained, and the fourth section data is multiplexed in all transport streams. It is a CAT (Conditional Access Table) that is converted and transmitted. With such a configuration, the partial T
Since the content of the EMM in which the automatic display message is described can be included in S, the automatic display message can be reproduced even when the video included in the partial TS is so-called “chase-up reproduction”.

Further, the present invention relates to a method in which a first elementary stream reproduced by a digital recording / reproducing device, third section data for specifying the same, and second section data for specifying the third section data. A digital broadcast receiving apparatus that receives an input of a partial transport stream having each packet as an element, obtains and interprets a packet of a second section data from the input partial transport stream, and interprets the packet of the third section data. An acquisition unit for acquiring a packet, and interpreting a packet of the third section data acquired by the acquisition unit, and determining whether a first elementary stream suitable for the digital broadcast receiving apparatus is included or not. And a third section when it is determined by the determination means that Recording means for acquiring a packet of the first elementary stream specified by the operation data and recording the packet in the volatile memory; reading the first elementary stream recorded in the volatile memory and transferring the packet to the nonvolatile memory Transcription means. With such a configuration, the first elementary stream included in the partial TS can be stored in the nonvolatile memory when necessary.

Further, the first data recorded in the volatile memory
Monitoring means for monitoring the written capacity of the elementary stream, detecting that the storage capacity of the volatile memory has been reached, and, when detected by the detecting means, suspending the reproduction of the digital recording / reproducing device. And a first input control means for activating the transcription means and restarting reproduction of the digital recording / reproducing device when the transcription is completed. With such a configuration, it is not necessary to increase the storage capacity of the volatile memory.

Further, error detecting means for detecting whether or not there is an error in the first elementary stream written in the volatile memory, and when the error detecting means detects an error, the volatile memory And a second input control means for causing the digital recording / reproducing device to output the partial transport stream again from the beginning. With such a configuration, the first elementary stream stored in the nonvolatile memory can be correct.

The first elementary stream is a DLT (Download Table) describing a control program, and the second section data is a PAT (Program Association Table) describing what service is provided. Yes, the third section data is a PMT (program map table) describing which transport stream packet is to be obtained. With such a configuration, the control program to be reproduced can be recorded in the nonvolatile memory.

The digital recording / reproducing device is a DVH
S (Digital Video Home System), the DVH depends on the data processing capability of the digital broadcast receiver.
Tape speed control means for controlling the S tape playback speed is further provided. With such a configuration, downloading can be performed at a high speed according to the capability of the digital broadcast receiving apparatus.

The present invention also receives a download instruction of a control program, receives a transport stream, separates a DLT (download table) describing a control program from the received transport stream, and stores the control program in a nonvolatile memory. Receiving means for receiving a command, a separating means for separating a PAT (program association table) and a PMT (program map table) from the transport stream, and a current non-volatile memory before downloading. A reading unit for reading a stored control program, a first generating unit for generating a transport stream packet in which the read control program is converted into an elementary stream format, and a control program are described. Generating means for generating a PAT and a PMT for a partial transport stream based on the PAT and the PMT separated so that the transport stream packet thus separated can be separated from the partial transport stream; Output means for outputting, as a partial transport stream, PAT and PMT for a stream and a transport stream packet describing the generated control program, and recording the output partial transport stream on an external digital recording / reproducing device After the output, the control program is downloaded. With such a configuration, backup processing can be performed even when the nonvolatile memory is configured as one bank.

The present invention also relates to a digital broadcast receiving method including a receiving step of receiving a transport stream, wherein the digital recording / reproducing apparatus outputs and records a partial transport stream. A first separating step of separating packets different from the elementary stream format from
A first generation step of generating a first transport stream packet in which the data of the separated packet is converted to an elementary stream format, and a second information describing information for specifying and separating the first transport stream packet. Generating a transport stream packet, and outputting a partial transport stream having the transport stream packets generated in the first and second generation steps to the digital recording / reproducing device. It has to have. According to such a method, a packet different from the elementary stream format that cannot be output according to the standard of the partial TS can be included in the partial transport stream and output.
For example, fonts used for control programs and screen display /
Logo data, data of music distribution, and the like can be included in the partial transport stream.

The present invention also provides a digital broadcast receiving program which has a receiving step of receiving a transport stream, and which causes a computer to execute a digital broadcast receiving method of outputting and recording a partial transport stream to a digital recording / reproducing apparatus. A first separating step of separating a packet different from the elementary stream format from the received transport stream; and a first separating step of generating a first transport stream packet in which the data of the separated packet is converted to the elementary stream format. 1), a second generation step of generating a second transport stream packet describing information for specifying and separating the first transport stream packet, and a first and a second generation step. Generated And an output step of outputting the partial transport stream to the transport stream packet as elements is set to Yes. By using this program in a digital broadcast receiving apparatus, packets different from the elementary stream format that cannot be output according to the standard of the partial TS can be included in the partial transport stream and output. For example, a control program, font / logo data used for screen display, and music distribution data can be included in the partial transport stream.

The present invention also provides a computer-readable recording medium applied to a digital broadcast receiving apparatus having a receiving section for receiving a transport stream, and outputting a partial transport stream to a digital recording / reproducing apparatus for recording. Wherein a first separation step of separating a packet different from the elementary stream format from the received transport stream, and generating a first transport stream packet in which data of the separated packet is converted to an elementary stream format A first generation step, and a second information describing information for specifying and separating the first transport stream packet.
A transport stream packet generated in the first and second generation steps, and an output step of outputting a partial transport stream having the transport stream packets generated in the first and second generation steps as elements. . By using this recording medium in a digital recording device, data different from the elementary stream format that cannot be output according to the standard of the partial TS can be included in the partial transport stream and output. For example, a control program, font / logo data used for screen display, and music distribution data can be included in the partial transport stream.

[Brief description of the drawings]

FIG. 1 is a schematic diagram illustrating an outline of receiving a transport stream by a digital broadcast receiving apparatus according to the present invention.

FIG. 2 is a configuration diagram of a digital broadcast receiving apparatus according to a first embodiment of the present invention.

FIG. 3 is a diagram showing a data structure of DCT separated by the transport decoder according to the embodiment.

FIG. 4 is a diagram showing a data structure of a PAT separated by the transport decoder of the embodiment.

FIG. 5 is a diagram showing a data structure of a PMT separated by the transport decoder according to the embodiment.

FIG. 6 is a diagram illustrating a data structure of a DLT separated by the transport decoder according to the embodiment.

FIG. 7 is a diagram showing a specific example of a PAT updated by the CPU of the embodiment.

FIG. 8 is a diagram showing a specific example of a PMT updated by the CPU according to the embodiment.

FIG. 9 is a flowchart illustrating the operation of the embodiment.

FIG. 10 is a flowchart illustrating an operation of the digital broadcast receiving apparatus according to the second embodiment of the present invention.

FIG. 11 shows a partial T in the recording phase described in the first embodiment and the reproduction phase described in the second embodiment.
It is a figure which illustrates S typically.

FIG. 12 is a flowchart illustrating an operation of the digital broadcast receiving apparatus according to the third embodiment of the present invention.

[Explanation of symbols]

 101 Broadcasting Station 102 Satellite 103 Antenna 104 Digital Broadcasting Receiver 105 Monitor 201 Receiver 202 Tuner 203 Demodulator 204 Transport Decoder 205 Audio Decoder 206 Image Decoder 207 CPU 208 Flash ROM 209 Main RAM 210 IC Card 211 Screen Synthesis Unit 214 DVHS Deck 215 Speaker

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5C025 BA25 BA27 BA30 DA01 DA10 5C053 FA20 FA21 GB05 GB37 HA33 KA01 LA06 LA07 5C063 AB03 AB05 CA23 DA07 DA13 DA20 5K028 AA06 BB05 CC05 DD01 DD02 EE03 KK03 KK32 MM08 SS27

Claims (19)

[Claims] 1. A digital broadcast receiving apparatus having a receiving unit for receiving a transport stream and outputting and recording a partial transport stream to a digital recording / reproducing apparatus, wherein the digital broadcast receiving apparatus converts a received transport stream into an elementary stream. First separating means for separating a packet having a different format, first generating means for generating a first transport stream packet obtained by converting the data of the separated packet into an elementary stream format, and the first transport stream Second generating means for generating a second transport stream packet describing information for specifying and separating a packet; and a partial transport having transport transport packets generated by the first and second generating means as elements. Output port stream Digital broadcast receiving apparatus characterized by comprising an output unit that. 2. The transport stream includes a packet in an elementary stream format and a packet in a section format, and a packet different from the elementary stream format includes first section data described in a section format. Is described in the second transport stream packet, and information for specifically separating the first transport stream packet from a partial transport stream in a subsequent process is described in the second transport stream packet. The digital broadcast receiving device according to claim 1. 3. The second section data generating section generates a packet describing second section data that specifies the first transport stream packet, and the first transport section includes a first section and a second section. 3. The digital broadcast receiving apparatus according to claim 2, further comprising: a third section data generation unit configured to generate a packet describing third section data describing port stream packet separation conditions. 4. The apparatus according to claim 1, further comprising a second separating unit configured to separate a packet of the fourth section data from the received transport stream, wherein the fourth section data includes a separating condition of the packet of the first section data. 4. The digital broadcast receiving apparatus according to claim 3, wherein the first separating unit separates the packet of the first section data from one transport stream according to the separating condition. 5. A transport stream in which a packet of section data which is a basis of the second section data and the third section data is specified in the fourth section data, A second separating unit that separates a packet of each section data that is a basis of the second section data and the third section data from the specified transport stream; The digital broadcast receiving device according to claim 4, wherein the generating unit generates the second and third section data based on each section data. 6. The first generating means includes a first separated unit
6. The digital broadcast receiving apparatus according to claim 5, wherein the section data is decrypted using a key and converted into a bit stream to generate a first elementary stream. 7. The first section data is a DLT (download table) describing a control program, and the second section data is a PAT (program association table) describing what service is provided. , The third section data is a PMT (program map table) describing which transport stream packet to acquire, and the fourth section data is a DCT multiplexed on all transport streams and transmitted. 7. The digital broadcast receiving apparatus according to claim 6, wherein the digital broadcast receiving apparatus is a (download control table). 8. The second section data generator, wherein:
Generating a PAT in which information of at least one service is described, wherein the third section data generation unit performs a stre in the PMT.
am # type is PES (Packetized Element)
Entry stream identifier) and describe the ES
The PID of (Elementary Stream) is
Generating a PMT describing the PID of the DLT corresponding to the DLT in the DCT, wherein the output means includes: a generated PAT;
8. The digital broadcast receiving apparatus according to claim 7, wherein each packet of the first elementary stream in which T and the data body part of the decoded DLT are described is output as a partial transport stream packet. 9. The DL currently stored in a flash ROM to store a maker identifier and a model identifier of the digital data receiving apparatus itself and to write a download table.
The version identifier of T is read out, and the manufacturer identifier and the model identifier described in the DCT separated by the second separating means match those stored therein, and
Determining means for determining whether the version identifier described in T is different from the read version identifier; and instructing the first separating means to separate the DLT again when the determining means determines no. 9. The digital broadcast receiving apparatus according to claim 8, further comprising: means. 10. The first section data includes an EMM (Entitlement Manager) describing an automatic display message.
ment Message), and the second section data is a PAT describing what service is provided.
(Program association table), the third section data is a PMT (program map table) describing which transport stream packet can be obtained, and the fourth section data is multiplexed in all transport streams. The digital broadcast receiving device according to claim 5, wherein the digital broadcast receiving device is a CAT (Conditional Access Table) that is converted and transmitted. 11. A first elementary stream reproduced by a digital recording / reproducing device and a third elementary stream for specifying the first elementary stream.
And a new second section data for specifying the third section data. The digital broadcast receiving apparatus receives an input of a partial transport stream having each packet as an element, and the input partial transport stream An acquisition unit for acquiring and interpreting a packet of the second section data from the apparatus, and acquiring a packet of the third section data; interpreting the packet of the third section data acquired by the acquisition unit, Determining means for determining whether a first elementary stream suitable for the broadcast receiving apparatus is included; and when the determining means determines that the first elementary stream is included, the first element specified by the third section data Recording means for acquiring a packet of the elementary stream and recording the packet in a volatile memory; The volatile read the first elementary stream recorded in the memory, the digital broadcast receiving apparatus characterized by comprising a posting means for posting in non-volatile memory. 12. A detecting means for monitoring a written capacity of a first elementary stream recorded in the volatile memory, and detecting that the storage capacity of the volatile memory has been reached, and detecting by the detecting means. When performed, the reproduction of the digital recording and reproduction device is temporarily suspended, the transcription means is activated,
12. The digital broadcast receiving apparatus according to claim 11, further comprising: first input control means for restarting reproduction of said digital recording / reproducing device when transcription is completed. 13. The first memory written in the volatile memory.
Error detecting means for detecting whether or not there is an error in the elementary stream, when an error is detected by the error detecting means, the content of the volatile memory is deleted, and a partial is again transmitted to the digital recording / reproducing device. 12. The digital broadcast receiving apparatus according to claim 11, further comprising: a second input control unit configured to output the transport stream from the beginning. 14. The first elementary stream is a DLT (download table) describing a control program, and the second section data is a PAT (program association table) describing what service is provided. 13. The apparatus according to claim 11, wherein the third section data is a PMT (program map table) describing which transport stream packet is to be obtained.
Or a digital broadcast receiving apparatus according to claim 13. 15. The digital recording / reproducing device is a DVHS.
(Digital Video Home System), the DVHS according to the data processing capability of the digital broadcast receiving apparatus.
15. The digital broadcast receiving apparatus according to claim 14, further comprising a tape speed control means for controlling a tape reproduction speed. 16. Receiving an instruction to download a control program, receiving a transport stream, separating a DLT (download table) describing the control program from the received transport stream, and downloading the control program to a nonvolatile memory. A digital broadcast receiving device, which receives a command from a transport stream to generate a PAT (program association table) and a P
Separating means for separating an MT (program map table) from the MT; reading means for reading a control program currently stored in a non-volatile memory before downloading; and a transport stream for converting the read control program into an elementary stream format First generating means for generating a packet, and a PAT and a PMT for a partial transport stream based on the PAT and the PMT separated so that a transport stream packet describing a control program can be separated from the partial transport stream. And PAT and PM for the partial transport stream.
T and an output means for outputting a transport stream packet describing the generated control program as a partial transport stream. The output partial transport stream is recorded on an external digital recording / reproducing device, and the output is controlled after output. A digital broadcast receiving device for downloading a program. 17. A method for receiving a transport stream, comprising: receiving a transport stream; and outputting a partial transport stream to a digital recording / reproducing apparatus for recording. The method includes the steps of: receiving a transport stream from an elementary stream; A first separation step of separating a packet having a different format, a first generation step of generating a first transport stream packet in which the data of the separated packet is converted into an elementary stream format, and the first transport stream. A second generation step of generating a second transport stream packet in which information for identifying and separating the packet is described; and a partial transport having the transport stream packets generated in the first and second generation steps as elements. Digital broadcast receiving method characterized by comprising an output step for outputting the transport stream to the digital recording and reproducing apparatus. 18. A digital broadcast receiving program which has a receiving step of receiving a transport stream, and causes a computer to execute a digital broadcast receiving method of outputting and recording a partial transport stream to a digital recording / reproducing device, comprising: First separating step of separating a packet different from the elementary stream format from the separated transport stream, and a first generating step of generating a first transport stream packet in which the data of the separated packet is converted to the elementary stream format A second generation step of generating a second transport stream packet describing information for specifying and separating the first transport stream packet; and a transformer generated in the first and second generation steps. Digital broadcasting receiving program according to an outputting step of outputting the partial transport stream to the over preparative stream packets as elements. 19. A computer-readable recording medium applied to a digital broadcast receiving apparatus having a receiving unit for receiving a transport stream and outputting and recording a partial transport stream to a digital recording / reproducing device, A first separating step of separating a packet different from the elementary stream format from the received transport stream, and a first generation of generating a first transport stream packet in which the data of the separated packet is converted to the elementary stream format A second transport stream packet describing information for identifying and separating the first transport stream packet; and a second transport stream packet generated in the first and second generation steps. Transport story A computer-readable recording medium a program and an output step of outputting the partial transport stream to the Mupaketto the element.