JP2003061022A - Broadcast program recorder for digital broadcast - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a broadcast program recorder for digital broadcast that eliminates the need for interrupting simultaneous recordings, even if analysis is made during the simultaneous recording by solving the problems of the analysis requiring much time and being difficult in matching with a target scene, when the broadcast program is going to be analyzed, during the simultaneous digital recording or after the simultaneous recording. SOLUTION: The broadcast program recorder for digital broadcast is configured, such that after a temporary storage means (307) temporarily stores segments of a TS file generated from a TS of a received digital broadcast signal, the segments of the stored TS file are intermittently transferred to a recording means (321) with a large capacity, so that the consecutive TS file for storage can be obtained from the recording means (321) with a large capacity.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcast program recording apparatus for digital broadcasting, and more particularly, to a broadcast program recording apparatus for digital broadcasting in which time for recording and analysis is shortened and reliability is ensured. Regarding

[0002]

2. Description of the Related Art A broadcasting company records and records a broadcast program at the same time as broadcasting (hereinafter referred to as the same recording) and stores it for a predetermined period in accordance with the provisions of Article 5 (save of broadcast program) of the Broadcasting Act. Is obligatory. For this reason, for example, a recording medium capable of recording about 2,000 hours is required to record and store a broadcast program for three months.

Prior art recording devices of this type have been constructed using magnetic tape. FIG. 1 shows an example of the configuration of a conventional recording device for analog broadcasting. In FIG. 1, a television broadcast program 101 is composed of a video signal (NTSC signal) and an audio signal 111, and is supplied to a transmitter 102 and a tape type recorder 103. The supplied television broadcast program is recorded 112 on the magnetic tape by the tape recorder 103 together with 112 broadcast from the transmitter 102.

[0004]

The same recording with a magnetic tape is recorded on the basis of time in the length direction of the magnetic tape. Therefore, there is no problem if the program is simply recorded and reproduced, but various problems occur when the broadcast program is analyzed.

[0007] These problems are that it takes time to search for a desired broadcast program. For example, when a cassette tape is used as the magnetic tape, it is possible to record for 6 hours normally, so that about 24 hours a day, about 4 recorded tapes can be formed. To perform the same recording by this method, at the time of recording, as shown in FIG. 1, time information (time base) 113 is taken into the tape type recording device 103 and the time base is recorded at the same time as the broadcast program.

[0006] When searching for a program, first, the cassette tape recorded is searched for and played back based on the broadcast time of the program. At this time, the program is searched based on the displayed time base. It is possible to shorten the search time by using a playback device with a fast-forward function of several times speed, but even if a 30-times speed device is used, it takes about 12 minutes until the end part of the tape is played back. It takes. When we arrived at an approximate location, we needed a procedure to find the relevant location while looking at the time base.

Generally, functions such as repetitive reproduction, slow reproduction, and frame-by-frame reproduction are used for analysis of broadcast programs. However, since these are performed by mechanical means, not only the analysis takes time, but also the aim There was a problem that it was difficult to match the situation.

In the above method, during the recording,
In order to analyze the broadcast program at the same time, the recording had to be suspended. Furthermore, when the tape type recording apparatus is used, the broadcast time and the tape recording time correspond to each other on a one-to-one basis. Therefore, when the tape is exchanged at the tape end, the recording during that time is interrupted. In order to prevent this, it is necessary to prepare at least two recording devices, and when one recording device is near the tape end, the other recording device must be activated to start recording. For this reason, there are inconveniences that a plurality of recording devices are required and that the recorded tape has a portion overlapping with another tape.

On the other hand, television broadcasting is shifting from conventional analog broadcasting to digital broadcasting. This is a change in broadcasting technology, services, program composition, etc. In analog broadcasting, one broadcaster was assigned one radio wave (broadcast program), whereas in digital broadcasting, multiple broadcasters One (or one broadcasting company) shares radio waves. Further, in digital broadcasting, program contents include images, audio, and data, which are compressed and digitized by the MPEG2 system to form one transport stream (hereinafter, TS).
Is said).

FIG. 2 shows a system diagram of an example of an apparatus for performing digital broadcasting. In FIG. 2, a broadcaster A uses a multiplexer (primary MUX) 201 to display an image,
Voice and data are multiplexed and compressed by MPEG2 system.
Digitize and combine into one TS. This is code 29
It is the broadcaster A's TS indicated by 1. Similarly, the broadcasting company B also collects images, audio, and data into one TS by the multiplexing device (primary MUX) 202, and becomes a TS of the broadcasting company B indicated by reference numeral 292. These broadcasters A and B
, And the EPG (electronic program information) 221 is further multiplexed by the multiplexer (ISDB MUX) 203 into one TS 293. This TS 293 is encrypted by the scrambler SCR 204 (coded signal 294
, And broadcast 295 from the transmitter 205.

The conventional recording apparatus for digital broadcasting used in this case merely records the TS as it is. In FIG. 2, the recording apparatus a211 and the recording apparatus b2
12, the recording device c213 is those. In addition, those recording devices are DAT (Digital Audio T
Apercorder) and LTO (LinearTa)
pe Open) is a recording device using a magnetic tape, and TS291, TS292, and TS294 are recorded as they are. Therefore, since these recording devices are also recorded by the magnetic tape, there is a problem similar to that of the analog recording recording device when the program is analyzed.

An object of the present invention is to record a digital broadcast program, and when the broadcast program is analyzed during the recording or after the recording, it takes a long time to analyze the program or the target scene is adjusted. It is an object of the present invention to provide a broadcast program recording device for digital broadcasting that does not have the problem of being difficult to perform, and does not require interruption of the recording even when analysis is performed during the recording.

[0013]

In order to achieve the above object, a broadcast program recording apparatus for digital broadcasting according to the present invention temporarily stores a fragment of a TS file generated from a TS of an input digital broadcast signal. After storing the data in the storage medium, the stored TS file fragments are intermittently transferred to the large-capacity recording means to obtain continuous TS files for storage in the large-capacity recording means. It is what

Further, the broadcast program recording apparatus for digital broadcasting according to the present invention can convert the TS of the inputted digital broadcasting signal from the TS to the TS.
A unit for generating a TS file in which a plurality of frames are collectively filed, a unit for adding a file header to the TS file generated by the unit, and a unit for storing the TS file to which the file header is added by the unit. 1 storage means, system management interface,
A second processing unit having a CPU, a second storage unit in which the contents stored in the first storage unit are transferred under the control of the CPU, and data from the present time to a predetermined time before is always stored. Means, the TS processing section is connected to the LAN via a LAN, and the storage contents of the second storage means are periodically transferred under the control of the CPU and stored as data for a fixed period. The storage unit and the TS processing unit are connected to each other via a LAN, and the storage content of the second storage unit is transferred in response to a transfer request from the system management interface or the first storage unit is controlled by the CPU. 3 is supplied with the data stored by the storage means, and the file header added in the TS processing unit is removed from the transferred or supplied data. TS of the input digital broadcast signal
It is characterized by comprising a TS reproducing section for restoring a signal corresponding to.

Further, the broadcast program recording apparatus for digital broadcasting according to the present invention has the TS processing section, the second storage means, and the third storage means independently, and shares the TS reproduction section. System broadcast program recording device and the outside and the two system broadcast program recording devices are connected by a control LAN, and the operation of the two system broadcast program recording devices is diagnosed. When it is admitted, the system management device is configured to switch from the broadcast program recording device in use to the broadcast program recording device not in use as a device to be used.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below in detail based on the embodiments of the invention with reference to the accompanying drawings. Figure 3
1 shows a first embodiment of a broadcast program recording apparatus for digital broadcasting of the present invention. M as an input signal of the device of the present invention
The PEG2-based TS391 is loaded into the TS processing device 308 composed of a workstation or the like, and first, the DV
Input to the B-ASI interface board 301,
It interfaces with each circuit in the TS processor 308. DVB-ASI interface board 30
The output of 1 is temporarily stored in a primary storage device (RAM) 303 composed of a DRAM or the like via a PCI bus 306.

The CPU 305 reads the data in the primary storage device (RAM) 303 via the PCI bus 306 and analyzes the TS frame. This analysis checks whether there is an abnormality in the TS frame format, synchronization, etc., and if there is an abnormality, the system management interface 341
Is to output an alarm to an external system (not shown). Here, the software necessary for the operation of the CPU 305 will be described as being included in the CPU 305. If the TS frame is normal, several TSs are combined to create a TS file. TS
The file contains time information, program information, system information such as TS
A file header summarizing the information required for analysis is added and stored again in the primary storage device (RAM) 303.
These pieces of information are created based on the information from the system management interface 341 and the like.

Further, the CPU 305 appropriately determines the timing and transfers the TS file in the primary storage device (RAM) 303 to the PCI bus 306 and SCSI interface 3.
04 to the secondary storage device (HD) 307 including a hard disk array or the like. The transferred TS file is deleted from the primary storage device 303.

The file size of the TS file is determined as follows. As mentioned above, the file needs a header for management. When one TS file is provided for each TS frame, the ratio of the management header to the stored TS data is large, and the storage efficiency is reduced.
Therefore, if a plurality of TS frames are put together to form one TS file, the storage efficiency is improved. However, if the file size of the TS file is too large, it takes time to transfer the file and the shared resources of the device (data transfer bus,
The time for occupying the work RAM, the program execution time, etc.) increases, and other processing may be made to wait or be skipped.

Also in the case of performing TS analysis, if the file size is too large, it takes time to load the file, and the work RAM for analysis is additionally used, resulting in poor efficiency. Therefore, the file size of the TS file is determined in consideration of these points. For example, if the TS frame is 18
8 bytes, Gigabit L for LAN for data transfer
Approximately 1.5 GB (C
In the case of S digital broadcasting, a size of about 5 minutes) is conceivable, and in the present invention, this is taken as one standard.

In FIG. 3, the secondary storage device (HD) 30
7 has a capacity capable of storing one day's worth of data (about 500 GB when one day of CS digital broadcasting is stored), and RAID (Redundan) is used to ensure reliability.
t Arreys of Independent D
isks) configuration. Primary storage device (RAM)
The TS files transferred from 303 are sequentially stored here. As a configuration example of the secondary storage device (HD) 307, when a ring-shaped memory configuration is considered, the TS file is rewritten in time series. When the TS file to be stored exceeds the memory capacity of the secondary storage device (HD) 307, the oldest file is overwritten in order, and the TS file of at least 24 hours before the present time is always stored. It is like this.

The TS file stored in the secondary storage device (HD) 307 is a tertiary storage device (LTO (REC)) using a magnetic tape as a recording medium, as described later.
321 periodically or as needed, a TS playback device (TS Generato) that creates a file required as an input of a dedicated TS analysis device for broadcast program analysis.
r) 331.

First, the TS file is stored in the tertiary storage device (LT
A case of being transferred to O (REC) 321 will be described. The CPU 305 stores the T stored in the secondary storage device (HD) 307 when the PCI bus 306 is free.
S file to SCSI interface 304, PCI
It is passed to the gigabit network inter-process communication (Gbit NIC) 302 via the bus 306. Gbit N
IC 302 and tertiary storage device (LTO (REC)) 321
Gigabit LAN (Gbit Local A)
REA network), Gbit
The TS file passed to the NIC 302 is TCP / IP
(Transmission Control Pro
It is transferred to the tertiary storage device (LTO (REC)) 321 by the Tocol / Internet Protocol.

The route of the Gigabit LAN is Gigabit N
IC (Gbit NIC) 302, Gigabit LAN3
92, Gigabit switch (Gbit SW) 311,
Also, it is connected to the tertiary storage device (LTO (REC)) 321 via the Gigabit LAN 393. This file transfer is performed regularly, and the secondary storage device (HD) 307
The TS file in is stored in the tertiary storage (LTO (REC)) 3 at least once before it is overwritten after 24 hours.
21. For example, if the recording time of the TS file is 5 minutes, once every 5 minutes (or 10
Twice a minute).

When the system management interface 341 requests the transfer of the TS file in the secondary storage device (HD) 307, the CPU 305 sends the corresponding TS file to the TS reproduction device (TS Generator) 3
31 to 31.

Even in this case, the tertiary storage device (LT
As in the case of data transfer to O (REC) 321, C
The PU 305 uses the TS file in the secondary storage device (HD) 307 for SCSI while the PCI bus 306 is idle.
Gigabit network inter-process communication (Gbit NI) via the interface 304 and the PCI bus 306.
C) Pass to 302. A Gigabit LAN (Gbit Local Area Ne) is provided between the Gbit NIC 302 and the TS playback device (TS Generator) 331.
network), and Gbit NIC302
The TS file passed to the TCP / IP (Trans
mission Control Protocol /
It is transferred to the TS reproducing device (TSGenerator) 331 by the Internet Protocol.

The Gigabit LAN route is Gigabit N
IC (Gbit NIC) 302, Gigabit LAN3
92, Gigabit switch (Gbit SW) 311,
TS playback device (TS
(Generator) 331.

The above series of operations are performed by the TS processor 308.
, TS import, TS frame management, TS
Filing, and file transfer of TS, etc. are performed without interruption. This is because the recording operation and the file transfer can be handled separately once the TS file is created. Therefore, it is possible to analyze a program during recording, which was not possible with the conventional tape type recorder.

The above-mentioned tertiary storage device (LTO (R
EC)) 321 sequentially records the transferred TS files on a magnetic tape (not shown). Here, the tertiary storage device (LTO (REC)) 321 temporarily stores the received TS file in the internal work RAM (not shown) and then writes it on the tape. This is because the writing speed of the tape is slow due to the mechanical operation. As described above, in the tertiary storage device (LTO (REC)) 321, data buffering and transfer rate conversion are performed using the internal work RAM and recorded on the tape.

Now, assuming that the capacity of one magnetic tape that can be recorded is 100 Gbytes and the capacity of a TS file is 1.5 Gbytes, approximately 66 files (one file of TS recording time is 5 minutes) on one magnetic tape. , About 5.5 hours)
Will be able to record the TS. After the recording on one magnetic tape is completed, the magnetic tape can be exchanged to continuously record the TS files. Further, the magnetic tape is automatically replaced by an auto changer. For example, if you need 5 magnetic tapes a day, you can use an auto changer for 5 tapes, and you can replace them once a day. In this case, the number of magnetic tapes will be 460 in three months.

However, according to the present invention, the overlap portion between the tapes, which is indispensable in the conventional tape type recording apparatus for recording the program itself, becomes unnecessary because of the file recording system. Efficient recording can be performed. Also, since tape exchange can be performed separately from the recording operation, the tertiary storage device (LTO (R
It is not necessary to prepare a plurality of EC)) 321.

When a broadcast program is analyzed, T to be analyzed
Applicable T if the S file is within 24 hours
The S file is transferred from the secondary storage device (HD) 307 to the TS playback device (TS Generato) via the gigabit LAN.
r) Input to 331. If it is not within 24 hours, input from the tape recorded and stored in the tertiary storage device (LTO (REC)) 321. In this case, the reproduction output reproduced by the tape reproducing device (LTO (PLAY)) 332 is input through the line 333.

TS playback device (TS Generato
r) 331 removes the file header from the input TS file and generates a TS under time management in accordance with the MPEG2 TS standard. The obtained TS is equivalent to the input TS391 (see FIG. 3) of the device of the present invention,
In addition, this TS is a TS playback device (TS Generat
or) 331 is expanded in a RAM or the like. Line 39
The data is input to a TS analysis device (not shown) via 5 to analyze the TS.

In this way, the required TS can be instantly organized, and since the recording medium in the TS reproducing apparatus is also the RAM, it is possible to instantly access the required portion. Therefore, in the TS analysis device (not shown), a T analysis using functions such as rewind reproduction and frame advance reproduction, which are features of the MPEG system, is performed.
S analysis becomes possible. Since the present invention is not an invention of the TS analysis device, further description will be omitted.

The above are the basic functions of the broadcast program recording apparatus (same recording apparatus) for digital broadcasting of the present invention. However, if the same recording apparatus is taken into consideration, further reliability should be ensured and operability should be improved. Is preferred. Below, a recording device with improved functions will be described.

FIG. 4 shows a second embodiment of the broadcast program recording apparatus for digital broadcasting of the present invention. In FIG.
TS processing devices 401 and 411, secondary storage device (HD) 4
02, 412, and Gigabit switch (Gbit
SWs 403 and 413 are the TS processing device 308, the secondary storage device (HD) 307, and the gigabit switch (Gb) of the first embodiment of the device of the present invention shown in FIG. 3, respectively.
It SW) 311 is supported.

Also, a tertiary storage device (LTO (REC))
404, 414, TS playback device (TS Generat
or) 421, tape playback device (LTO (PLAY))
422, lines 432, 423, and control LAN 455.
Reference numerals 456, 457, 458 and 459 respectively denote the tertiary storage device (LT) of the first embodiment of the device of the present invention shown in FIG.
O (REC) 321, TS playback device (TS Gene)
ratio) 331, tape player (LTO (PLA
Y)) 332, lines 395, 333, and system management interface 341.

Duplication is one means for increasing the reliability of the system. Also in the device of the present invention, the input TS4
31 is processed by the TS processing devices 401 and 411, recorded in the respective secondary storage devices (HD) 402 and 412, and respectively recorded in the gigabit switches (Gbit SW) 403 and 4.
Tertiary storage device (LTO (REC)) 40 via 13
It is recorded in 4,414. The feature of this embodiment (second embodiment) is to integrally manage the operations of these duplicated devices, and the purpose thereof is to quickly switch at the time of failure, protect data loss, and analyze the cause of failure. , And improving the operability of TS analysis. Further, although not shown here, duplication of a gigabit LAN and a control LAN is also effective in improving reliability.

In addition, in the present embodiment (second embodiment), a system management device 451 is provided to manage the entire recording system. System management device 451
Is connected to the outside via an external input / output interface 453, and can input / output system status, error log, TS analysis information, and the like. Further, the system management device 451 controls the control L via the control LAN 454.
It is connected to an AN switch (Ethernet (R)) 452, and further via this control LAN switch 452.
It is also connected to a management LAN composed of control LANs 455, 456, 457, 458 and 459.

The system management device 451 is the control LA described above.
The self-diagnosis information is periodically requested to the recording apparatus via N. Here, the self-diagnosis information is, for example, in the TS processing device 401, the CPU in the device is monitoring the operation of each part of the device, and reports the status thereof. If it takes time to access the secondary storage device (HD) 402, it is expected that stored data will be lost.

The system management device 451 also manages the TS file, which is the TS processing device 40.
1, 411 TS file creation status and tertiary storage device (LTO (REC)) 404, 414
Create the data such as the recording status of. These data are output to the outside via the external input / output interface 453 as necessary.

The system monitoring device 45 which has obtained these information
1 outputs an alarm to the outside through the external input / output interface 453, and also the TS processing device 401, the secondary storage device (HD) 402, and the gigabit switch (Gbi).
t SW) 403, and the tertiary storage device (LTO (RE
C)) 404, the current equipment is composed of a TS processing device 411, a secondary storage device (HD) 412, a gigabit switch (Gbit SW) 413, and a tertiary storage device (LTO (REC)) 414. Instantly switch to the existing backup equipment via the control LAN. Similarly, even when a failure occurs in the TS processing device 411, the information is transmitted to the system management device 451 via the control LAN at any time, and the device switching is instantaneously performed.

Here, a concrete operation example will be described. First, the tertiary storage device (LTO (REC)) 404,
Five tapes are prepared as cassettes for one day in 414 and recorded by an autochanger. The tertiary storage devices (LTO (REC)) 404 and 414 are recording the same program, and the tertiary storage device (L
The TO (REC) 404 exchanges the above five tapes every day for program storage. The backup tertiary storage device (LTO (REC)) 414 overwrites on the same tape every day without changing the tape. If a problem occurs in the active system, the standby system cassette (5 tapes) is used for program storage, and this operation is performed until the active system is restored. By performing such an operation, even if a problem occurs in the active system, there is an advantage that it is possible to extend the response (for example, repair) until the next day.

The system management device 451 not only manages the health of the system, but also creates and manages the TS in response to a request from an external device. The TS processing devices 401 and 411, the tertiary storage devices (LTO (REC)) 404 and 414, and the TS playback device (TS Generator) 421 manage their work reports (created files and processing contents) via the control LAN. Report to device 451.

For example, suppose that there is a request from the outside to analyze a broadcast program 2 hours ago for 10 minutes. The system management device 451 searches for the corresponding file and searches for the TS processing devices 401 and 411 and the TS playback device (TS Generator).
A requestor TS 421 is instructed via the control LAN to create the requested TS.

In the case of this embodiment, a TS file transfer gigabit LAN (482, 492, 483, 493, 4)
84, 494) and the control LAN constitute separate LANs in terms of throughput and reliability, but future high-speed broadband LAN such as 10 Gigabit LAN
If you use, these LANs are integrated into one LAN
It is also obvious that these LANs can be extended to perform file transfer to remote locations and system management from remote locations.

[0047]

As described above, while the conventional analog broadcasting recorder using a magnetic tape records a program in time series, the present invention recorders the same. By converting the TS into a file in units of multiple frames, which is suitable for analysis and transfer, it is possible to search not only from broadcast time information but also from broadcast contents divided into images, audio, data, etc. In addition, it is possible to obtain an effect that convenience is increased such that only a necessary portion can be extracted.

Further, according to the present invention, since the TS file to be analyzed has a subdivided file structure, it is possible to edit only the portion required for the TS analysis. Also, since the data handled is a file structure,
It is possible to read that data during recording, and thus
During the recording, the TS analysis work can be performed in parallel with the operation.

Further, in the storage device used in the device of the present invention,
The effect that the program analysis time can be shortened and the functions can be enhanced by properly using the high-speed small-capacity primary storage device, the medium-speed medium-capacity secondary storage device, and the low-speed large-capacity tertiary storage device Is obtained.

Further, according to the present invention, a system management device for separating the TS processing device, the storage device, and the reproducing device necessary for the configuration as the recording device and controlling them integrally is provided, and a network is provided between the devices. Since the connection is made in accordance with the above-mentioned one, and the duplex structure (see the second embodiment of the present invention) is adopted, the reliability between the respective devices is improved and the convenience of system management is improved.

[Brief description of drawings]

FIG. 1 shows a configuration example of a conventional recording device for analog broadcasting.

FIG. 2 shows a system diagram of an example of an apparatus for performing digital broadcasting.

FIG. 3 shows a first embodiment of a broadcast program recording apparatus for digital broadcasting of the present invention.

FIG. 4 shows a second embodiment of a broadcast program recording apparatus for digital broadcasting of the present invention.

[Explanation of symbols]

301 DVB-ASI interface board 302 Gigabit network inter-process communication (Gb
it NIC) 303 Primary storage device (RAM) 304 SCSI interface 305 CPU 306 PCI bus 307 Secondary storage device (HD) 308 TS processing device 311 Gigabit switch (Gbit SW) 321 Tertiary storage device (LTO (REC)) 331 TS playback Device (TS Generator) 332 Tape playback device (LTO (PLAY)) 333, 395 Line 341 System management interface 391 Transport stream (TS) 392, 393, 394 Gigabit LAN 401, 411 TS processing device 402, 412 Secondary storage device (HD) 403,413 Gigabit Switch (Gbit S
W) 404, 414 Tertiary storage device (LTO (REC)) 421 TS playback device (TS Generator) 422 Tape playback device (LTO (PLAY)) 423 line 431 Transport stream (TS) 432 line 451 System management device 452 Control LAN Switch (Ethernet
(R) 453 External input / output interface 454, 455, 456, 457, 458, 459 Control LAN 482, 483, 484, 492, 493, 494 Gigabit LAN

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] August 24, 2001 (2001.8.2)
4)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 3

[Correction method] Change

[Correction content]

Continued front page    (72) Inventor Jie Kawabuchi             1-4-1, Jinnan 1-4-1 Shibuya-ku, Tokyo             In the NKK itech (72) Inventor Akira Sato             1-4-1, Jinnan 1-4-1 Shibuya-ku, Tokyo             In the NKK itech (72) Inventor Kunio Hara             1-4-1, Jinnan 1-4-1 Shibuya-ku, Tokyo             In the NKK itech (72) Inventor Yukiya Hira             1-4-1, Jinnan 1-4-1 Shibuya-ku, Tokyo             In the NKK itech (72) Inventor Hajime Otsuka             1-8-14 Sendagaya, Shibuya-ku, Tokyo d             Lu S I Japan Co., Ltd. F-term (reference) 5C022 CA03                 5C052 AB04 CC11 DD10                 5C053 FA20 FA23 FA27 FA30 GA11                       GB06 KA01 KA24 LA06 LA07

Claims (3)

[Claims] 1. A TS file fragment generated from a TS of an input digital broadcast signal is stored in a temporary storage means for temporarily storing, and then the stored TS file fragment is intermittently transferred to a large-capacity recording means. By doing so, the broadcast program recording apparatus for digital broadcasting is characterized in that the continuous recording TS file for storage is obtained in the large capacity recording means. 2. A T which is a file of a plurality of TSs of the inputted digital broadcasting signal TSs.
Means for generating an S file, means for adding a file header to the TS file generated by the means, first storage means for storing the TS file with the file header added by the means, and a system management interface A TS processing unit including a CPU, a storage content of the first storage unit is transferred under the control of the CPU, and a data from the present time to a predetermined time before is always stored. Storage means, which is connected to the TS processing unit via a LAN, and the storage contents of the second storage means are periodically transferred under the control of the CPU and stored as data for a certain period. Connected to the TS processing unit and the TS processing unit via a LAN, and the contents stored in the second storage unit are stored in the system management interface under the control of the CPU. Data that is transferred in response to a transfer request from the interface, or the data stored by the third storage means is supplied, and the file header added in the TS processing unit from the transferred or supplied data is A broadcast program recording apparatus for digital broadcasting, comprising a TS reproducing unit that restores a signal corresponding to the TS of the input digital broadcasting signal that has been removed. 3. The broadcast program recording apparatus for digital broadcasting according to claim 1, wherein the TS processing unit, the second storage unit, and the third storage unit.
And a broadcast program recording device of two systems sharing the TS reproduction section, and connected to the outside and the broadcast program recording devices of the two systems by a control LAN.
When the operation of the broadcast program recording apparatus of the two systems is diagnosed and an abnormality is found in the broadcast program recording apparatus currently in use, the broadcast program recording apparatus that is not in use is used as the apparatus that should be used. A broadcast program recording device for digital broadcasting, comprising a system management device for switching to a device.