JP4346471B2 - Broadcast material data recording / reproducing apparatus, broadcast material data processing system, and control method of broadcast material data recording / reproducing apparatus - Google Patents

Description

  The present invention is used in a broadcasting station for digital broadcasting, and in particular, broadcast material of a system in which broadcast material data handled by a recording / reproducing apparatus provided in a sending system can be copied to a recording / reproducing apparatus provided in a waiting system. The present invention relates to a data recording / reproducing apparatus, a broadcast material data processing system, and a control method for a broadcast material data recording / reproducing apparatus.

  As is well known, in broadcasting stations, for example, broadcast material data such as television broadcasts and radio broadcast programs, CM (commercial), text and data programs are stored, and the broadcast material data is reproduced at an arbitrary timing. A program / CM / video / audio file storage device (hereinafter referred to as a material recording / playback device) is used (for example, Patent Document 1).

  Also, in the broadcasting station, it is common to have a working / standby duplex configuration for equipment failure countermeasures and maintenance. For this reason, a material recording / reproducing device is used for each of the working system and the standby system. It will be. In this case, in the active system, the broadcast material data is recorded in the material recording / reproducing apparatus, and then, the active broadcast material data is transferred to the standby material recording / reproducing apparatus and copied.

Japanese Patent Application No. 2000-075844.

  By the way, in the above copy function, broadcasting material data is transferred from the active system to the standby system at the maximum transfer rate at which transfer is possible, and copying is performed. Here, when the broadcast material data to be copied is being recorded, since the copy speed is faster than the recording speed, the copy part eventually overtakes the recorded part, and the unrecorded part is not copied at that time.

  For this reason, it is necessary to determine whether or not the broadcast material data is being recorded before copying the broadcast material data. If the broadcast material data is being recorded, it is necessary to wait until the recording is completed before copying. There is a need. If the active material recording / playback device fails during this standby period, the broadcast material data being recorded will be erased and cannot be read out, and the entire broadcast material data will be copied to the standby material recording / playback device. There was something I couldn't do.

  Therefore, an object of the present invention is to perform immediate reproduction even when the broadcast material data to be reproduced is being recorded, and to reliably reproduce all of the broadcast material data being recorded without interruption during reproduction. It is an object of the present invention to provide a broadcast material data recording / reproducing apparatus, a broadcast material data processing system, and a control method for the broadcast material data recording / reproducing apparatus.

In order to achieve the above object, the present invention is configured as follows.
A broadcast material data recording / reproducing apparatus that records digital broadcast broadcast material data on a recording medium and reproduces the broadcast material data from the recording medium in response to a reproduction request, the same as the broadcast material data being recorded on the recording medium Monitoring means for monitoring the data recording amount of broadcast material data to the recording medium when a data reproduction request is generated, and controlling the reproduction speed of the broadcast material data recorded on the recording medium based on the monitoring result of the monitoring means And a control means for performing.

  According to this configuration, when a reproduction request for the same data as the broadcast material data being recorded on the recording medium is generated, the recording amount of the broadcast material data on the recording medium, that is, whether or not recording has been performed prior to the execution of the reproduction. The playback speed is controlled so that all broadcast material data can be played back based on the determination result. For this reason, it is possible to perform appropriate reproduction processing for each data recording amount of broadcast material data on the recording medium, thereby greatly reducing processing performed externally.

The control means is characterized in that, when the data recording amount is determined to be equal to or less than a predetermined threshold value from the monitoring result of the monitoring means, the reproduction speed is substantially matched with the recording speed of the broadcast material data on the recording medium.
According to this configuration, it is determined whether or not the recording amount of the broadcast material data with respect to the recording medium is equal to or less than a predetermined threshold value, that is, whether or not recording is being performed. The speed is approximately matched. For this reason, it is possible to always reliably reproduce all of the broadcast material data being recorded without the reproduction part overtaking the recording part and thereby waiting for the end of the recording.

  The control means reads the broadcast material data on the recording medium at the maximum reproduction speed when the data recording amount is determined to be equal to or less than the predetermined threshold value from the monitoring result of the monitoring means, and the read data amount and the data recording amount The playback speed is made substantially the same as the recording speed of the broadcast material data on the recording medium when the two match.

  According to this configuration, by switching the reproduction speed when the read data amount and the data recording amount coincide with each other, the broadcast material data recorded on the recording medium is reproduced at the maximum reproduction speed, while the recording is performed. As for the broadcast material data in the medium, it is possible to perform an optimum reproduction process for each recording state, such as reproduction at a reproduction speed substantially coincident with the recording speed. Therefore, it is possible to perform the playback process in a shorter time than when broadcasting material data is always played back at a playback speed that matches the recording speed.

  As described above in detail, according to the present invention, even when broadcast material data to be reproduced is being recorded, immediate reproduction can be performed, and all of the broadcast material data being recorded can be surely reproduced without interruption. It is possible to provide a broadcast material data recording / reproducing apparatus, a broadcast material data processing system, and a control method for the broadcast material data recording / reproducing apparatus that can be reproduced.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
(First embodiment)
FIG. 1 is a schematic configuration diagram of a digital broadcast material sending system according to the first embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a material recording / reproducing apparatus, which has an encoder 2 connected to its input terminal and a decoder 3 connected to its output terminal. In addition, a material recording / reproducing apparatus 4 that functions as a standby system is connected to the material recording / reproducing apparatus 1 via a LAN (Local Area Network) 5.
Broadcast material signals such as video / audio signals to be broadcast are compressed and encoded by the encoder 2 to generate broadcast material data, and are temporarily recorded in the material recording / reproducing apparatus 1. The broadcast material data reproduced from the material recording / reproducing apparatus 1 is decoded by the decoder 3 into the original broadcast material signal.

  In the material recording / reproducing apparatus 1, an input unit 12, a storage unit 13 including a hard disk device, a control unit 14, and output units 15 and 16 are connected to a data bus 11. The input unit 12 takes in the broadcast material data generated by the encoder 2 and records it in an appropriate area of the storage unit 13 under the control of the control unit 14.

The control unit 14 manages the broadcast material data stored in the storage unit 13 and designates the transfer start address and the number of transfer bytes of the storage unit 13 for the output units 15 and 16 in accordance with the reproduction instruction input.
The output unit 15 transfers the broadcast material data stored in the storage unit 13 to the decoder 3 by the number of bytes specified from the address specified by the control unit 14. Further, the output unit 16 transfers the broadcast material data stored in the storage unit 13 to the material recording / reproducing apparatus 4 by the number of bytes specified from the address specified by the control unit 14.

  In the material recording / reproducing apparatus 4, an input unit 42, a storage unit 43 including a hard disk device, a control unit 44, and an output unit 45 are connected on a data bus 41. The input unit 42 takes in the broadcast material data transferred from the material recording / reproducing apparatus 1 and records it in an appropriate area of the storage unit 43 under the control of the control unit 44. The output unit 45 outputs the broadcast material data stored in the storage unit 43 by the number of bytes specified from the address specified by the control unit 44.

By the way, in the first embodiment, the control unit 14 includes a recording state confirmation function, a recording speed reference function, a recording location monitoring function, and a transfer speed control function. The recording status confirmation function confirms whether or not the broadcast material data requested to be reproduced is being recorded.
The recording speed reference function refers to the recording speed when the requested broadcast material data is being recorded. The recording location monitoring function monitors the recording location of broadcast material data in the storage unit 13, that is, the number of recorded bytes. When the broadcast material data is being recorded, that is, when it is determined that the number of recorded bytes is equal to or less than a predetermined threshold, the transfer rate control function outputs the output unit 16 so that the transfer rate of the broadcast material data to be reproduced substantially matches the recording rate. Control.

Next, the operation according to the above configuration will be described.
FIG. 2 is a diagram showing the correspondence between the amount of broadcast material data recorded in the storage unit 13 and time, and FIG. 3 is a flowchart showing the processing procedure and processing contents of the control unit 14. In FIG. 2, the vertical axis indicates the size of the recorded broadcast material data, that is, the data recording amount, and the horizontal axis indicates time.

Here, it is assumed that a broadcast material data copy request is received from a higher-level automatic program transmission control device during recording of the broadcast material data in the storage unit 13. At this time, the control unit 14 starts the control process shown in FIG.
First, the control unit 14 receives a copy request signal (step ST3a), and determines whether the requested broadcast material data is being recorded in the storage unit 13 or has been recorded (step ST3b).

When it is confirmed that the recording is in progress, the control unit 14 refers to the recording speed (step ST3c), and controls the output unit 16 so that the transfer speed of the broadcast material data matches the recording speed. The broadcast material data reproduced is transferred to the recording / reproducing apparatus 4 (step ST3d).
Thereafter, when the broadcast material data transfer process is completed (step ST3e), the control unit 14 notifies the request source of the completion of copying (step ST3f).

On the other hand, if the requested broadcast material data has already been recorded in the storage unit 13 in step ST3b, the control unit 14 reproduces the broadcast material data from the storage unit 13 at the maximum transfer rate and sends it to the material recording / playback apparatus 4. The output unit 16 is controlled to transfer (step ST3g).
In the above process, a copy request from the user or a copy request from the material recording / reproducing apparatus 4 may be accepted.

As described above, in the first embodiment, when the copy request for the same data as the broadcast material data being recorded is received in the storage unit 13, the broadcast material for the storage unit 13 is transmitted by the control unit 14 prior to execution of transfer. It is determined whether or not the data has been recorded. When the data is being recorded, the output unit 16 is controlled so that the transfer speed substantially matches the recording speed.
Therefore, it is possible to always transfer and copy all of the broadcast material data being recorded to the material recording / reproducing apparatus 4 without fail, without the reproduction part overtaking the recording part and thereby waiting for the end of recording.

(Second Embodiment)
The second embodiment of the present invention relates to the control unit 14. Here, when the broadcast material data requested to be reproduced is being recorded in the storage unit 13, the control unit 14 reproduces the broadcast material data in the storage unit 13 at the maximum transfer speed, and the reproduced data amount and the recorded data. It has a function of making the transfer rate substantially coincide with the recording rate of the broadcast material data in the storage unit 13 at the time when the amount of data in it matches.

FIG. 4 is a diagram showing a correspondence relationship between the recording amount of broadcast material data recorded in the storage unit 13 and time in the second embodiment, and FIG. 5 is a flowchart showing a processing procedure and processing contents of the control unit 14. It is.
Here, it is assumed that a broadcast material data copy request is received from a higher-level automatic program transmission control device during recording of the broadcast material data in the storage unit 13. At this time, the control unit 14 starts the control process shown in FIG.

First, the control unit 14 receives a copy request signal (step ST5a), and determines whether the requested broadcast material data is being recorded in the storage unit 13 or has been recorded (step ST5b).
Then, when it is being recorded is confirmed, the control unit 14 intends rows determining whether or not transfer point has caught up to the recording position (step ST 5 c).

Here, since it has not caught up yet, the control unit 14 controls the output unit 16 so as to read the broadcast material data from the storage unit 13 at the maximum transfer speed (step ST5d), and steps ST5c and ST5c until the transfer location catches up with the recording location. The process of step ST5d is repeatedly executed.
When the transfer location catches up with the recording location, the control unit 14 refers to the recording speed (step ST5e), controls the output unit 16 to match the transfer speed of the broadcast material data with the recording speed, and records the material. The reproduced broadcast material data is transferred to the reproduction device 4 (step ST5f).

Thereafter, when the broadcast material data transfer process ends (step ST5g), the control unit 14 notifies the request source that the copying is complete (step ST5h).
On the other hand, if the requested broadcast material data has already been recorded in the storage unit 13 in step ST5b, the control unit 14 reproduces the broadcast material data from the storage unit 13 at the maximum transfer rate and sends it to the material recording / reproducing apparatus 4. The output unit 16 is controlled to transfer (step ST5i).

As described above, in the second embodiment, when a copy request for the same data as the broadcast material data being recorded arrives in the storage unit 13, the control unit 14 broadcasts the broadcast material to the storage unit 13 prior to execution of reproduction. It is determined whether or not the data has been recorded. When the data is being recorded, the broadcast material data already recorded in the storage unit 13 is reproduced at the maximum transfer speed and recorded when the transfer location catches up with the recording location. The broadcast material data therein is transferred to the material recording / reproducing apparatus 4 at a transfer speed substantially corresponding to the recording speed and copied.
Therefore, it is possible to perform an optimal transfer process for each recording state, and as a result, it is possible to copy broadcast material data in a shorter time than in the first embodiment.

(Other embodiments)
The present invention is not limited to the above embodiments. For example, in the first embodiment, when broadcast material data is being recorded to be copied, the broadcast material data is played back at a transfer speed that substantially matches the recording speed. However, the present invention is not limited to this, and broadcast material data is played back at a transfer rate faster than the recording rate from the start of transfer to the end of recording if the length of the broadcast material data is predetermined, such as CM. May be. In this case, it can be realized as long as the recording amount of the broadcast material data in the storage unit can be closely monitored.
In addition, the type and configuration of the material sending system, the configuration of the material recording / reproducing apparatus, the function of the control unit, the transfer processing control procedure, the processing content, and the like can be implemented with various modifications without departing from the scope of the present invention.

1 is a schematic configuration diagram of a digital broadcast material transmission system according to a first embodiment of the present invention. The figure which shows the correspondence of the recording amount of broadcast material data recorded on the accumulation | storage part, and time in the said 1st Embodiment. The flowchart which shows the process sequence and process content of the control part in the said 1st Embodiment. The figure which shows the correspondence of the recording amount of broadcast material data recorded on the storage part in 2nd Embodiment of this invention, and time. The flowchart which shows the process sequence and process content of the control part in the 2nd Embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1,4 ... Material recording / reproducing apparatus, 2 ... Encoder, 3 ... Decoder, 5 ... LAN (Local Area Network), 11, 41 ... Data bus, 12, 42 ... Input part, 13, 43 ... Accumulation part, 14, 44 ... control part, 15, 16, 45 ... output part.

Claims (6)

A broadcast material data recording / reproducing apparatus for recording digital broadcast broadcast material data on a recording medium and reproducing broadcast material data from the recording medium in response to a reproduction request,
Monitoring means for monitoring a data recording amount of the broadcast material data on the recording medium when a reproduction request for the same data as the broadcast material data being recorded on the recording medium occurs;
When it is determined from the monitoring result of the monitoring means that the broadcast material data requested to be reproduced is being recorded, the reproduction speed of the broadcast material data recorded on the recording medium is abbreviated as the recording speed of the broadcast material data on the recording medium. A broadcast material data recording / reproducing apparatus comprising a control means for matching . A broadcast material data recording / reproducing apparatus for recording digital broadcast broadcast material data on a recording medium and reproducing broadcast material data from the recording medium in response to a reproduction request,
Monitoring means for monitoring a data recording amount of the broadcast material data on the recording medium when a reproduction request for the same data as the broadcast material data being recorded on the recording medium occurs;
When it is determined from the monitoring result of the monitoring means that the broadcast material data requested to be reproduced is being recorded, the broadcast material data on the recording medium is read at the maximum reproduction speed, and the data amount of the read broadcast material data is It is determined whether or not the data recording amount of the broadcast material data matches, and control means for making the playback speed substantially coincide with the recording speed of the broadcast material data on the recording medium when it is determined that they match. A broadcast material data recording / reproducing apparatus. A first information recording / reproducing apparatus for recording broadcast material data of digital broadcasting on a first recording medium and reproducing broadcast material data from the first recording medium in response to a reproduction request, and the first information recording A second device that is connected to a playback device via a communication network, records broadcast material data of digital broadcasting on a second recording medium, and plays back the broadcast material data from the second recording medium in response to a playback request. An information recording / reproducing apparatus,
The first information recording / reproducing apparatus comprises:
When the reproduction request for the same data as the broadcast material data being recorded on the first recording medium arrives from the second information recording / reproducing device, the data recording amount of the broadcast material data on the first recording medium is set. Monitoring means for monitoring;
When it is determined from the monitoring result of the monitoring means that the broadcast material data requested to be reproduced is being recorded, the reproduction speed of the broadcast material data recorded on the recording medium is substantially the same as the recording speed of the broadcast material data on the recording medium. A matching control means;
Transmission means for transmitting broadcast material data reproduced from the first recording medium by the control means to the second information recording / reproducing apparatus via the communication network;
The second information recording / reproducing apparatus comprises:
A broadcast material data processing system comprising processing means for receiving broadcast material data coming from the first information recording / reproducing apparatus via a communication network and recording the broadcast material data on the second recording medium. A first information recording / reproducing apparatus for recording broadcast material data of digital broadcasting on a first recording medium and reproducing broadcast material data from the first recording medium in response to a reproduction request, and the first information recording A second device that is connected to a playback device via a communication network, records broadcast material data of digital broadcasting on a second recording medium, and plays back the broadcast material data from the second recording medium in response to a playback request. An information recording / reproducing apparatus,
The first information recording / reproducing apparatus comprises:
When the reproduction request for the same data as the broadcast material data being recorded on the first recording medium arrives from the second information recording / reproducing apparatus, the data recording amount of the broadcast material data on the first recording medium is set. Monitoring means for monitoring;
When it is determined from the monitoring result of the monitoring means that the broadcast material data requested to be reproduced is being recorded, the broadcast material data on the recording medium is read at the maximum reproduction speed, and the data amount of the read broadcast material data is It is determined whether or not the data recording amount of the broadcast material data matches, and at the time of determining that they match, the control means for making the playback speed substantially coincide with the recording speed of the broadcast material data on the recording medium,
Transmission means for transmitting broadcast material data reproduced from the first recording medium by the control means to the second information recording / reproducing apparatus via the communication network;
The second information recording / reproducing apparatus comprises:
A broadcast material data processing system comprising processing means for receiving broadcast material data coming from the first information recording / reproducing apparatus via a communication network and recording the broadcast material data on the second recording medium. A control method used in a broadcast material data recording / reproducing apparatus for recording broadcast material data of digital broadcasting on a recording medium and reproducing the broadcast material data from the recording medium in response to a reproduction request,
When a playback request for the same data as the broadcast material data being recorded on the recording medium occurs, the data recording amount of the broadcast material data on the recording medium is monitored,
When it is determined from the monitoring result that the broadcast material data requested to be reproduced is being recorded, the reproduction speed of the broadcast material data recorded on the recording medium is substantially matched with the recording speed of the broadcast material data on the recording medium. A control method for a broadcast material data recording / reproducing apparatus. A control method used in a broadcast material data recording / reproducing apparatus for recording broadcast material data of digital broadcasting on a recording medium and reproducing the broadcast material data from the recording medium in response to a reproduction request,
When a playback request for the same data as the broadcast material data being recorded on the recording medium occurs, the data recording amount of the broadcast material data on the recording medium is monitored,
When it is determined from the monitoring result that the broadcast material data requested to be reproduced is being recorded, the broadcast material data on the recording medium is read at the maximum reproduction speed, and the data amount of the read broadcast material data and the broadcast material are read. Broadcast material data recording characterized in that it is determined whether or not the data recording amount of the data matches, and the playback speed is substantially matched with the recording speed of the broadcast material data on the recording medium when it is determined that they match A control method of a playback device.

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