JPH08306119A - Information processing device - Google Patents

Abstract

PURPOSE: To easily and surely back up data at the slave side by issuing the command from a host to control a single terminal and simultaneously and in parallel executing the recording and the reproducing of the data by two recording and reproducing sections. CONSTITUTION: Same ID number is assigned to optical disk drives 3A and 3B which are connected to an SCSI interface bus and bus signals are preferentially transmitted from the drive 3A of the master side. Thus, a host computer 2 issues commands to control one SCSI terminal and the drives 3A and 3B simultaneously and in parallel execute the processes corresponding to the commands. Therefore, the drive 3B of the slave side automatically forms an optical disk H for back up, simultaneously and in parallel executes the processes corresponding to the commands, surely receives the data outputted from the computer 2 and surely executes the recording and reproducing processes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information processing device,
For example, in an optical disc device using a write-once type optical disc, two recording / reproducing systems are formed so as to operate simultaneously in response to a request from an external device, so that data is backed up easily and reliably.

[0002]

2. Description of the Related Art Conventionally, in an optical disk device which is an information processing device, important features such as a write-once optical disk, which is difficult to rewrite data, are actively used to record important data such as personal information, and a history of data update. There is one that was designed to be recorded.

In such an optical disk device, even if the data recorded on the optical disk is periodically re-recorded on the other recording medium by the backup system, and the data recorded on the optical disk is destroyed, the precious data is lost. The data can be repaired.

[0004]

By the way, conventionally, in the process of backing up the data recorded on the optical disc as described above, the process of recording the data for backup reproduces all the large amount of data recorded on the optical disc. Therefore, if the processing is performed in parallel with the processing for accessing a normal optical disk, there is a possibility that these processing may be hindered. For this reason, conventionally, the process of recording data for backup cannot be easily executed, and the optical disk is rarely accessed on holidays.
There was a problem that had to be done at night.

Further, in the conventional backup system, when the destruction of the data recorded on the optical disk is detected on the main body side, the operation is switched so that the host accesses the backup system side, and then the backup is performed until then. It is necessary to access the corresponding data rather than the data. For this reason, it is difficult to quickly deal with an accident such as data corruption, which results in a problem that the access time becomes long and a complicated process must be executed. Further, in the conventional backup system, there is also a problem that the configuration of the entire system becomes complicated.

The present invention has been made in consideration of the above points, and proposes an information processing apparatus capable of easily recording backup data and having a simple structure and capable of quickly responding to an accident. Is what you are trying to do.

[0007]

In order to solve the above problems, according to the present invention, the first and second recording / reproducing sections for recording / reproducing the first and second recording media respectively have a value of 1 when viewed from the host. The same identification code is assigned so that it can be seen by one terminal device, it is connected to the host through a common bus, and the operation is switched in response to a command input through the common bus. In response to this, the specified output signal is sent to the host, and when set on the master side and the slave side, the output signal output from the recording / playback unit on the master side is output from the recording / playback unit on the slave side. Send to the host in priority to the output signal.

At this time, if an error occurs in the recording / reproducing unit on the master side in the first and second recording / reproducing units, the recording / reproducing unit on the slave side is replaced with the recording / reproducing unit on the slave side. The data reproduced by the unit is sent to the host.

Further, at this time, if the first and second recording / reproducing units cannot correctly record or reproduce the data on the recording medium, the data recorded on the recording medium of the other recording / reproducing unit may be used. Repair data that cannot be recorded or played back correctly.

Further, at this time, in the signal processing circuits respectively included in the first and second recording / reproducing units, the output signal output from the recording / reproducing unit on the master side is output from the recording / reproducing unit on the slave side. Send to the host with priority over the output signal.

The above information processing apparatus supplies a storage unit for storing a plurality of recording media and the recording media stored in the storage unit to the first and second recording / reproducing units, and the first and second storage units.
The first and second recording media ejected from the recording / reproducing section of (1) are provided with a transport mechanism for accommodating them in the former accommodating section.

Further, at this time, the preceding transport mechanism is controlled and operated by the recording / reproducing section on the master side.

Further, at this time, the recording medium is inserted into the first and second recording / reproducing sections through the specified insertion opening,
Also, the recording medium is ejected through this insertion opening, and the insertion opening is arranged so as to be separated by a specified distance,
On the other hand, the previous transport mechanism is integrally moved by one movable mechanism, and the recording medium accommodated corresponding to the distance of the previous insertion port is simultaneously supplied to the first and second recording / reproducing units. In addition, the recording medium ejected from the first and second recording / reproducing sections is simultaneously accommodated in the accommodation position formed corresponding to the distance of the previous insertion port.

At this time, the previous recording medium is an optical disk, and the first and second recording / reproducing sections synchronize the rotational phases of the optical disks.

Further, in an information processing apparatus for switching the operation in response to a command input from the host, recording predetermined data on a prescribed recording medium, and reproducing the data recorded on this recording medium, this information processing The same identification code is assigned to another information processing apparatus that records and reproduces the same recording medium as the apparatus so that the terminal apparatus looks like one terminal apparatus when viewed from the host, and is shared with other information processing apparatuses. When connected to the host by the bus of, the master side is set, and the other information processing device is set to the slave side, in response to the command input via the common bus,
The operation is switched in the same manner as the other information processing apparatus, and the specified output signal is sent to the host in response to the switching of the operation together with the other information processing apparatus, and the output signal output from the other recording / reproducing unit is output. Priority is given to sending the output signal to the host,
When it is set on the slave side and another information processing device is set on the master side, in response to a command input via the common bus, the operation is switched in the same manner as other information processing devices. .

At this time, if the data cannot be correctly reproduced by the other information processing apparatus in the state of being set on the slave side, the reproduced data is sent to the host instead of the other information processing apparatus.

Further, at this time, if the data cannot be correctly recorded or reproduced on this recording medium, the data recorded on the recording medium of the other information processing apparatus can be used to restore the data that cannot be correctly recorded or reproduced, and another If data cannot be recorded or played correctly on the information processing device,
The corresponding data is reproduced from the recording medium and output to another information processing device.

At this time, the recording medium of the previous information processing apparatus is an optical disk, and the rotation of this optical disk is phase-synchronized with the rotation of the optical disk of another information processing apparatus.

[0019]

In the first and second recording / reproducing sections for respectively recording and reproducing the first and second recording media, the same identification code is assigned so that they can be seen by the terminal device when viewed from the host. If the bus is connected to the host and the operation is switched in response to a command input via the common bus, the first and second recording media can be output in response to the command output from the host. Data can be recorded / reproduced simultaneously and in parallel, and backup data can be automatically recorded. Further, at this time, in response to the switching of the operation, the prescribed output signal is transmitted, and when the master side and the slave side are respectively set, the output signal output from the recording / reproducing unit on the master side is changed to the slave side. If the output signal output from the recording / reproducing unit is sent to the host with priority, the master side can control the entire operation and respond to the host.

Further, at this time, when an error occurs in the recording / reproducing unit on the master side in the first and second recording / reproducing units, the recording / reproducing unit on the slave side is replaced with the recording / reproducing unit on the slave side. By sending the reproduced data to the host,
When data destruction or the like due to this kind of error occurs on the master side, the operation can be performed on behalf of this slave side.

Further, at this time, if the first and second recording / reproducing sections cannot correctly record or reproduce data on the preceding recording medium, the data recorded on the recording medium of the other recording / reproducing section causes If the data that cannot be correctly recorded or reproduced is restored, the data recorded in parallel can be effectively used to restore the data.

Further, at this time, in the signal processing circuit in which the first and second recording / reproducing sections are respectively provided,
If the output signal output from the recording / reproducing unit on the master side is sent to the host in preference to the output signal output from the recording / reproducing unit on the slave side, the first and second recording / reproducing units having the same configuration can An information processing device can be formed.

Further, the above information processing apparatus supplies a storage unit for storing a plurality of recording media and the recording media stored in the storage unit to the first and second recording / reproducing units, and also the first and second storage units.
If a transport mechanism for storing the first and second recording media discharged from the recording / reproducing unit in the first storage unit is provided,
A backup system can be formed in a large-capacity information processing device that records and reproduces data on and from a plurality of recording media.

Further, at this time, if the preceding transport mechanism operates under the control of the recording / reproducing unit on the master side, the recording medium on the slave side is replaced so as to correspond to the recording medium on the master side, and the recording medium unit is changed. Can be backed up with.

Further, at this time, the recording medium is inserted into the first and second recording / reproducing sections through the specified insertion port,
Also, the recording medium is ejected through this insertion opening, and the insertion opening is arranged so as to be separated by a specified distance,
On the other hand, the previous transport mechanism is integrally moved by one movable mechanism, and the recording medium accommodated corresponding to the distance of the previous insertion port is simultaneously supplied to the first and second recording / reproducing units. Further, if the recording media ejected from the first and second recording / reproducing sections are simultaneously accommodated in the accommodating position formed corresponding to the distance of the previous insertion port, one conveyance mechanism is commonly used. Further, the recording medium supply / removal processing can be executed while maintaining the corresponding relationship completely and synchronously.

At this time, if the preceding recording medium is an optical disk and the first and second recording / reproducing units synchronize the rotational phases of the optical disks, the first
Also, the recording / reproducing process for the optical disc by the second recording / reproducing unit can be synchronized.

In addition, in an information processing apparatus that records and reproduces data in response to a command input from the host, the host sees other information processing apparatuses that record and reproduce the same recording medium as this information processing apparatus. If the same identification code is assigned so that it can be seen by one terminal device when it is connected to the host through a bus common to other information processing devices, a plurality of information processing devices having the same configuration can be provided. These plural information processing devices can be operated in parallel at the same time so that the host can access one information processing device by connecting. As a result, the data from the host can be simultaneously recorded with the other information processing apparatus, and the recorded data can be reproduced. At this time, if it is set to the master side and the other information processing device is set to the slave side, the operation is switched in the same manner as the other information processing device and priority is given to the output signal output from the other recording / reproducing unit. , When a specified output signal is sent to the host and is set on the slave side and another information processing device is set on the master side, other information processing is performed in response to a command input via the common bus. If the operation is switched in the same manner as the device, the master side can control the entire operation and respond to the host.

Further, at this time, if an error occurs in the other information processing apparatus in the state where the slave side is set,
If the reproduced data is sent to the host instead of this other information processing device, when an accident occurs in the other information processing device set on the master side, the operation of the master side information processing device in which the accident has occurred can be performed. Can act on your behalf.

Further, at this time, if the data cannot be correctly recorded or reproduced on this recording medium, the data recorded on the recording medium of another information processing apparatus can be used to restore the data that cannot be correctly recorded or reproduced. If the data can be restored by another information processing device and the data cannot be correctly recorded or reproduced by the other information processing device, the corresponding data can be reproduced from the recording medium and output to the other information processing device. Conversely, the data of another information processing device can be restored.

At this time, if the recording medium of the previous information processing apparatus is an optical disk, and the rotation of this optical disk is phase-synchronized with the rotation of the optical disk of another information processing apparatus, With other information processing devices,
It is possible to synchronize the recording / reproducing process on the optical disc.

[0031]

Embodiments of the present invention will be described in detail below with reference to the drawings.

(1) Configuration of Embodiment FIG. 2 is a block diagram showing an optical disc autochanger according to an embodiment of the present invention. The optical disc autochanger 1 is controlled by a host computer 2 to switch its operation, and the host computer 2
The data output from the write-once type optical disc H
The data recorded on the write-once type optical disk H is reproduced and output to the host computer 2.

Here, the optical disc autochanger 1 is an optical disc drive 3 which is a master drive.
A and an optical disk drive 3B that is a slave drive
Are arranged side by side in the vertical direction, and the optical disc drives 3A and 3A are sandwiched with the transport mechanism 4 for the optical disc H interposed therebetween.
A shelf 5 for accommodating the optical disc H is formed on the side of B.

Here, the optical disk drives 3A and 3B
Have substantially the same configuration, and the insertion ports of the optical disc H are arranged so as to be separated from each other by a distance L in the vertical direction toward the transport mechanism 4.

As shown by the arrow A, the shelf 5 is a shelf motor 6
Thus, the whole is formed so as to be movable in the vertical direction. Further, the shelf 5 is formed so as to accommodate 10 optical disks, and in this embodiment, the 1
Among 0 optical disks, 5 optical disks housed below are accessed by the optical disk drive 3A located below, and 5 optical disks housed above are accessed by the optical disk drive 3B located above. It is designed to be.

Further, in this embodiment, the five optical discs H stored above and the five optical discs H stored below are set so that the respective optical discs H correspond to each other in the vertical direction, 5 is set such that the interval between the corresponding optical disks H is the interval L of the insertion openings of the optical disk drives 3A and 3B.

In the transport mechanism 4, holding mechanisms 8A and 8B for the optical disc H are arranged in front of the insertion openings of the optical disc drives 3A and 3B, and the holding mechanism 8 is held by the insertion motor 7.
After driving the optical discs A and 8B to hold the optical discs H ejected from the insertion ports by the holding mechanisms 8A and 8B, respectively, the holding mechanisms 8A and 8B are moved to the shelf 5 side, whereby the optical discs H are correspondingly stored. Store in position.

Further, the transport mechanism 4 carries out the reverse operation to take out the optical disks H housed in the shelf 5 by the holding mechanisms 8A and 8B, respectively, and take these taken out optical disks H from the optical disk drives 3A and 3A.
Insert it into the insertion slot of B.

As a result, the transport mechanism 4 is formed so that the two holding mechanisms 8A and 8B can be simultaneously driven by the insertion motor 7, so that, in the transport process of the optical disc H, the optical disc drives 3A and 3B can be driven. Corresponding optical disks H stored separately on the top and bottom of the shelf 5.
Are formed so that they can be conveyed simultaneously.

The shelf motor 6 and the insertion motor 7 are controlled by the system controller (SC) 9A of the optical disk drive 3A on the master drive side, so that in the optical disk autochanger 1, the shelf motor 6 is driven. After moving up and down, insert motor 7
Is formed so that the desired optical disk H can be loaded from the shelf 5 into the optical disk drive 3A, and the optical disk H ejected from the optical disk drive 3A can be stored into the shelf 5 at this time. The drive 3B is also formed so as to be able to simultaneously perform the transport process of the corresponding optical disc H.

As a result, in the optical disc autochanger 1, the optical disc drive 3A and the optical disc drive 3B have a common transport mechanism for the optical disc H, and the entire structure is simplified accordingly. Further, by simultaneously transporting the corresponding optical discs H in one operation, the corresponding optical discs H can be surely retained while maintaining the relationship between the corresponding optical discs H.
Is formed to move between and thereby improve reliability.

When recording / reproducing the optical disc H in this manner, the optical disc drives 3A and 3B are operated by the SCS.
I interface bus (Small Comuputer System Int
erface) daisy chain, which is connected to the host computer 2 so that the operation is switched under the control of the host computer 2 so that the desired optical disk H can be recorded and reproduced.

Further, optical disk drives 3A and 3B
Are assigned the same identification number (consisting of an ID) on this SCSI interface bus, so that, in this embodiment, the host computer 2 does not distinguish between the optical disk drives 3A and 3B, as if they were one SCSI interface. Processing such as command issuance can be executed as in the case of accessing a terminal.

As a result, in the optical disk drives 3A and 3B, the same processing is simultaneously executed in parallel in response to a command from the host computer 2, and the optical disk drive 3B on the slave drive side automatically performs backup. In the case where data is recorded and one of the optical disc drives 3A or 3B fails, for example, the slave drive side acts instead of the master drive, and the destroyed data is restored.

Therefore, the optical disk drives 3A and 3B
Are connected to each other by an RS232C interface bus, and also connected to each other by a SCSI control bus SBUS, so that the master drive side is preferentially responded to the host computer 2.
Further, it is formed so that processing such as data restoration can be executed.

Specifically, the optical disc autochanger 1 is formed by connecting the optical disc drives 3A and 3B as shown in FIG. That is, the optical disk drives 3A and 3B are respectively the SCSI controller 1
SCSI interface bus SCS for 1A and 11B
I is connected to the host computer 2 by a common bus.

At this time, the SCSI controller 1
Among the SCSI interface buses, 1A and 11B are a data bus (DATA) and a SCSI controller 1
Regarding the input side (IN) seen from the 1A and 11B sides,
It is directly connected to the host computer 2 so that commands and data output from the host computer 2 are input together, and the optical disk drives 3A and 3B operate simultaneously in response to these commands.

On the other hand, the SCSI controller 11A
And 11B are SCSI controllers 11A and 11B.
The output side (OUT) viewed from the side is connected to the host computer 2 via the prescribed arbitration circuits 12A to 13B and 14A to 19B.

That is, of the SCSI interface bus, the bus signals of busy BUSY and request REQ are controlled by the SCSI controllers 11A and 11B.
The arbitration circuits 12A to 13B each having the same configuration are connected to the host computer 2,
(12B to 13B) are formed as shown in FIG.

Here, the optical disk drives 3A and 3B
Is formed so as to transmit and receive the busy bus and the output side bus signal of the request REQ to and from each other via the SCSI control bus SBUS, and the arbitration circuits 12A and 12A.
As shown in FIG. 4, B inputs the busy BUSY bus signals output from the SCSI controllers 11A and 11B to the OR gate 20 and the AND gate 21, respectively (FIGS. 4A and 4B). .

Further, the arbitration circuits 12A and 12B receive the output signal of the OR gate 20 and the D flip-flop circuit 2
2 is reset and the output signal of the AND gate 21 is changed to the clock terminal CK of the D flip-flop circuit 22.
Supply to. Here, this D flip-flop circuit 22
Has a clear terminal CL connected to a power supply line VCC and a data terminal D grounded, which causes a busy BU output from the SCSI controllers 11A and 11B.
Busy BUSY that falls late among SY bus signals
Bus B that rises slowly after the output logic level of the D flip-flop circuit 22 is lowered in response to the bus signal of
D flip-flop circuit 2 corresponding to the USY bus signal
It is designed to raise the output logic level of 2.

As a result, the arbitration circuits 12A and 12B are
When the optical disk drives 3A and 3B are selected by the host computer 2 and the SCSI controllers 11A and 11B output the busy BUSY bus signal in response to this, the busy BUS is output at a later timing.
The output logic level of the D flip-flop circuit 22 is changed according to the Y bus signal.

Further, the arbitration circuits 12A and 12B output the output signal of the D flip-flop circuit 22 through the NAND gate 23. Here at this NAND gate 23
Is inputted with the control signal S1A of logic "H" (FIG. 4C) from the system controller 9A on the master drive side, while the control signal S1B of logic "L" is inputted from the system controller 9B on the slave drive side. It is designed to be entered. As a result, the arbitration circuits 12A and 1
2B preferentially outputs the busy BUSY bus signal from the arbitration circuit 12A on the master drive side (see FIG. 4).
(D), the output of busy BUSY is stopped from the arbitration circuit 12B on the slave drive side.

Further, at this time, the arbitration circuits 12A and 12B
Is a busy BUSY that is output at the later timing
When the output logic level of the D flip-flop circuit 22 changes according to the bus signal of, the optical disk drives 3A and 3B are selected by the host computer 2,
In response to this, either optical disk drive 3A or 3
Even when the busy bus busy signal is transmitted from B, the busy busy signal is output to the host computer 2 while waiting for the other optical disk drive 3B or 3A to respond.

As a result, the optical disk drives 3A and 3
In B, even if the response speeds of the two optical disk drives 3A and 3B are different, the two optical disk drives 3A and 3B wait for a state in which the subsequent commands from the host computer 2 can be processed reliably, and the busy signal is given to the host computer 2. The output signal of is transmitted.

The arbitration circuits 13A and 13B execute the same processing as the arbitration circuits 12A and 12B described above on the bus signal of the request REQ output from the SCSI controllers 11A and 11B. As a result, in the optical disk drives 3A and 3B, the arbitration circuit 13A on the master drive side is also used for the bus signal of the request REQ.
Arbitration circuit 1 on slave drive side
The output is stopped from 3B.

At this time, the optical disc drives 3A and 3B both request the host computer 2 by outputting the request REQ bus signal to the host computer 2 in response to the request REQ bus signal which is output at the later timing. Request REQ to the host computer 2 while sending the REQ bus signal
Output the bus signal of.

As a result, the optical disc drives 3A and 3
In B, even when the response speed of the request REQ is different between the two optical disk drives 3A and 3B, the two optical disk drives 3A and 3B wait for a state in which data and the like from the subsequent host computer 2 can be surely fetched, and then the host computer 2 The output signal of the request REQ is sent to.

On the other hand, acknowledge ACK, select SEL, command / data (C / D), input /
Regarding the bus signals of output (I / O), message (MSG), and reset (REST), the optical disk drives 3A and 3B have the same arbitration circuit 1 shown in FIG.
It is output to the host computer 2 by 4A to 19B.

Here, each of the arbitration circuits 14A to 19B inputs the corresponding bus signal to one end of the NAND gate 24, and the control signal S1A (S) to the other end of the NAND gate 24.
Enter 1B). As a result, each arbitration circuit 14A to 19
When B is set to the master drive, it outputs a bus signal such as a corresponding acknowledge ACK, whereas when it is set to a slave drive, the output of each bus signal is stopped.

Thus, the optical disk drives 3A and 3B
Then, the output signal composed of the bus signal output from the master drive side is preferentially output, and the bus signals of busy BUSY and request REQ that define the subsequent operation with the host computer 2 are both continued. It outputs the data to the host computer 2 after waiting for a state in which it can respond to the operation.
Then, it is possible to simultaneously operate the two optical disk drives 3A and 3B in parallel by a process of accessing one SCSI terminal to back up valuable data.

In particular, the optical disk autochanger 1
Then, the bus signals of busy BUSY and request REQ that define the subsequent operation with the host computer 2 are output to the host computer 2 after waiting for a state in which both can support the subsequent operation. Therefore, the reliability can be improved.

That is, as shown in FIG. 6, in the SCSI interface bus, the process of accessing the optical disk drives 3A and 3B is formed in five phases. In the first attribution phase F1, the host computer 2 confirms that the bus signal of busy BUSY (FIGS. 6A1 and 6C1) is held at logic “H”. SCS
After it is confirmed by the host computer 2 that the right to use the I interface bus has not been acquired by another device, the busy bus from the host computer 2 is confirmed.
Bus signal falls to logic "L", whereby the host computer 2 acquires the right to use the SCSI interface bus.

At this time, the host computer 2 outputs the ID number designating the optical disc autochanger 1 to the data bus DATA BUS (FIGS. 6A3 and 6C3), and in the subsequent selection phase F2.
Bus signal of select SEL (FIG. 6 (A2) and (C
2)) is stopped by the host computer 2.
As a result, the optical disc autochanger 1 detects the select SEL bus signal (FIG. 6 (B3)) and the ID number (FIG. 6 (B2)), and responds to this by detecting the busy BUS.
The Y bus signal falls to logic "L" (see FIG. 6 (B
1)), and then to the subsequent command phase F3.

In this command phase F3, the optical disc autochanger 1 causes the command / data C / D bus signal to fall (FIGS. 6 (A6), (B6) and (C6)).
6)), which allows the autochanger 1 for optical discs.
Drives the data line. In this command phase F3, the bus signal of the request REQ subsequently output from the optical disc autochanger 1 (see FIG.
4), (B4) and (C4)), the host computer 2 outputs command data to the data bus DATA BUS, and at the same time, acknowledge ACK.
Bus signal (A5), (B5) and (C5) in FIG. 6 is stopped by the host computer 2, and a command is issued from the host computer 2 to the optical disc autochanger 1 by handshaking.

When the command transmission is completed in this way, the optical disc autochanger 1 sends the bus signal of the message MSG (FIGS. 6A8, 6B8 and 6C).
8)) is fallen, which causes the data phase F4 to follow. In this data phase F4, when reproducing data is output from the optical disc autochanger 1, the data bus DATA BUS is driven by the optical disc autochanger 1 to input / output I / O (FIGS. 6A7, 6B7 and 6B7). C
7)), the bus signal of the request REQ falls,
In response to this, the bus signal of the acknowledge ACK is dropped by the host computer 2, and the data reproduced by the handshake is output from the optical disc autochanger 1 to the host computer 2.

On the contrary, when the host computer 2 sends the data for recording, the host computer 2 drives the data bus DATA BUS to input / output I / O (FIG. 6 (A7),
(B7) and (C7)), the bus signal of the request REQ is dropped, and in response to this, the bus signal of acknowledge ACK is dropped by the optical disc autochanger 1, and the host computer 2 performs a handshake to the optical disc autochanger 1. The data is output.

When the data transfer is completed in this way, the operation then proceeds to the status / message phase F5, in which the optical disk autochanger 1 operates the data bus DA.
TA BUS is driven, the input / output I / O and request REQ bus signals are dropped, and in response to this, the acknowledge ACK bus signal is dropped by the host computer 2 and the command processing result is handed by the handshake. It is output to the computer 2.

In the SCSI interface bus for executing the data transfer processing in this manner, the attribution phase F1, the selection phase F2 and the status / message phase F5 are described in more detail in FIG.
In the attribution phase F1, a busy BUSY from the host computer 2 (see FIG. 7) will be described.
When the bus signal of (A) is dropped, in the optical disk drives 3A and 3B, the bus signals of busy BUSY (FIGS. 7D, 7F and 7H) are dropped on the input side (IN). As a result, the acquisition of the usage right by the optical disk drives 3A and 3B is prohibited thereafter.

At the same time, the host computer 2 outputs the ID number to the data bus DATA BUS (FIG. 7C), and the host computer 2 selects SEL (FIGS. 7B and 7I) in the subsequent selection phase F2.
When the bus signal of (1) falls, the optical disk drives 3A and 3B respond to this and cause the busy BUSY (FIGS. 7E and 7G) of the output side (OUT) to fall.

At this time, the arbitration circuit 1 on the master drive side
In 2A, the output logic level is lowered at the timing of the busy BUSY that falls late (in this case, on the slave drive side), so that the busy BUSY of the SCSI interface bus is generated at this timing.
Will be actively switched by the optical disk drive 3A.

On the other hand, in the status / message phase F5, in the arbitration circuit 12A, the timing of busy BUSY which rises with a delay (in this case,
Since the output logic level is raised on the slave drive side), the busy BUSY of the SCSI interface bus is switched to non-active by the optical disk drive 3A at this timing.

On the other hand, as shown in FIG. 8, in the command phase F3, the data phase F4, and the status / message phase F5, when data is transferred from the host computer 2 by handshaking, the request REQ from the optical disk drives 3A and 3B, respectively.
When the bus signals of ((E) and (H) of FIG. 8) are output,
In the arbitration circuit 13A on the master drive side, the output logic level is lowered at the timing of the request REQ that falls late, so that the SC
Request REQ of SI interface bus (Fig. 8
(I)) is actively switched by the optical disk drive 3A, and the bus signal of this request REQ is supplied to the host computer 2 (FIG. 8 (B)).

In response to this, the host computer 2 causes the acknowledge ACK bus signal to fall (see FIG. 8).
(A)), and is input to the optical disk drives 3A and 3B via the SCSI interface bus (FIG. 8 (D),
(G) and (J)), commands and data sent from the host computer 2 to the data bus DATA BUS,
Data such as the status is taken into the optical disk drives 3A and 3B via the SCSI interface bus (FIGS. 8C, 8F, and 8K).

As a result, the optical disk drives 3A and 3
In B, the host computer 2 operates in parallel at the same time.
It is designed so that commands and the like output from can be reliably captured.

Further, the optical disk drives 3A and 3B
Respectively include system controllers 9A and 9B each having a microcomputer configuration, and the system controllers 9A and 9B control the entire operation.

That is, the system controllers 9A and 9
In the case of this embodiment, B sets the optical disk drives 3A and 3B as the master drive and the slave drive, respectively, based on the user's operation executed in advance by executing the prescribed processing procedure when the power is turned on.
Further, the system controllers 9A and 9B control the control signal S1 in the optical disk drives 3A and 3B set as the master drive and the slave drive, respectively.
A and S1B are set to logic "H" and logic "L", whereby the master drive side preferentially outputs the above-mentioned output signal to the host computer 2.

Further, as shown in FIG. 9, in the optical disk drives 3A and 3B, the rotational phase of the optical disk H is detected and the rotational phase detection signal S2 whose signal level rises during the period in which the optical head scans the sector 0 is output. To generate. When the system controllers 9A and 9B are set on the master drive side, the SCSI control bus S
This rotation phase detection signal S2 is output to the system controller 9B or 9A on the slave drive side via the BUS.

On the other hand, when set on the slave drive side, the system controllers 9A and 9B cause the rotation phase detection signal S2 input from the master drive side.
In addition, the spindle servo circuit is controlled so that the rotation phase detection signal S2 detected internally is phase-synchronized, so that in the optical disc autochanger, the rotation of the optical disc H is synchronized between the master drive side and the slave drive side.

As a result, the optical disc drives 3A and 3
In B, it operates so that it operates in parallel in response to a command from the host computer 2, so that the same sector can always be accessed simultaneously by the two optical disk drives 3A and 3B, thereby reducing wasteful waiting time. Therefore, the recording / reproducing process can be efficiently performed.

To do this, the system controller 9A
When a write / read command is input from the host computer 2 via the SCSI controllers 11A and 11B, the SCSI controllers 11 and 9B switch the entire operation in response to the command.
The data input via A and 11B are sequentially recorded on the optical disk H, and the data recorded on the optical disk H are output via the SCSI controllers 11A and 11B.

At the time of this writing / reading, the system controllers 9A and 9B communicate with each other via the RS232C interface bus to confirm whether or not the recording / reproducing process has been correctly executed. Further, in the reproduction processing, if the optical disk drive 3A set as the master drive sends data to the host computer 2 and the master drive cannot properly execute the reproduction processing, the system controllers 9A and 9B use slave drives. The reproduced data is transmitted from the optical disc drive 3B on the side.

As a result, in the optical disc autochanger 1, when an error occurs on the master drive side in the reproduction process, the slave side optical disc drive 3A causes the master side optical disc drive 3A to operate.
Of the master side optical disk drive 3A
It is designed to be able to back up easily and quickly.

Further, at this time, the system controller 9A
When the master drive side and the slave drive side cannot correctly execute the reproduction processing, the recording media 9 and 9B record this, reproduce the subsequent data, and output it to the host computer 2.

The error detection during the reproduction is detected by the operation results of the servo system and the signal processing system when a data cannot be reproduced from the beginning due to a malfunction of the servo system or a defect, and a bit error occurs. Therefore, if the data cannot be correctly reproduced, it is detected by the error correction processing result.

On the other hand, in the writing process, the system controllers 9A and 9B sequentially record the data output from the host computer 2 on the optical disk H on the master drive side and the slave drive side, and at this time, record correctly. Is not possible,
This is recorded and the subsequent data is recorded.

The error detection at the time of this recording is detected by the operation result of the servo system and the signal processing system when the data cannot be recorded from the beginning due to the malfunction of the servo system, the defect, etc., and the read-after-write processing is performed. It is also detected by the result.

After the recording / reproducing process is executed in this manner, the system controllers 9A and 9B execute the processing procedure shown in FIG. That is, the system controllers 9A and 9B move from step SP1 to step SP2, judge whether or not the data can be correctly recorded / reproduced here, and if a correct processing is performed, a positive result is obtained from the result left in the recording. , Move to step SP3,
After issuing the normal operation notification to the host computer 2,
The process proceeds to step SP4 and this processing procedure is ended.

On the other hand, if the data could not be recorded / reproduced correctly, a negative result is obtained in step SP2, so that the system controllers 9A and 9B
Moves to step SP5 and issues a normal operation notification to the host computer 2 even in this case.

Further, system controllers 9A and 9B
Judges whether or not the command has been issued from the host computer 2 and the specified time has elapsed in the following step SP6. If a negative result is obtained here, the process proceeds to step SP7. Here, the system controllers 9A and 9B judge whether or not the subsequent command is input from the host computer 2, and if a negative result is obtained here, the process directly returns to step SP6, while the subsequent command from the host computer 2 is input. If so, move to step SP8 and execute a process in response to this command, and then execute step SP
Return to 6.

As a result, the system controllers 9A and 9B perform steps SP6-SP7-S when no command is input from the host computer 2 for a specified time.
The processing procedure of P8-SP6 is repeated, and when this specified time has elapsed, the process proceeds to step SP9. This step SP9
In the system controller 9A and 9B,
Optical disc drive 3B or 3A that could not be correctly recorded and reproduced via the 232C interface bus than optical disc drive 3A or 3B that was correctly recorded and reproduced
Then, the data that could not be recorded / reproduced correctly is transferred.

Further, in the optical disk drive 3B or 3A which could not be correctly recorded / reproduced, the data transferred from the other optical disk drive 3A or 3B is re-recorded to thereby restore the data which could not be correctly recorded / reproduced, and then in step SP4. Then, the processing procedure is finished.

As a result, the optical disc autochanger 1 can automatically restore the destroyed data and the like without any special operation or processing by the host computer 2 or the like, thus improving the usability. You can Further, in the host computer 2, even if an error occurs on the master side, data is restored after the operation is delegated on the slave side, and a notification of normal operation is returned, so that any processing for dealing with this error is performed. It is possible to efficiently execute normal processing without executing.

(2) Operation of the embodiment In the above-mentioned configuration, the optical disk H stored in the shelf 5
Responds to a command from the host computer 2,
The optical disk drive 3A is loaded by the holding mechanism 8A, and at this time, the corresponding optical disk H is held by the holding mechanism 8A.
The optical disk drive 3B on the slave drive side is loaded by the holding mechanism 8B which is interlocked with.

These optical disks H are rotationally driven by the optical disk drives 3A and 3B, respectively. At this time, the slave optical disk H is mastered by the rotational phase detection signal S2 whose signal level rises at the timing when the optical head scans the sector 0. It is rotationally driven so as to be phase-synchronized with the rotation of the side optical disk H. As a result, in the optical disc autochanger 1, it is possible to reduce the waiting time when the optical disc drives 3A and 3B simultaneously record and reproduce data in parallel.

When the optical disk H is driven in this manner, various bus signals sent to the SCSI interface bus are directly transmitted to the optical disk drives 3A and 3A.
It is input to the SCSI controllers 12A and 12B of B, whereby the operation is switched in each of the optical disk drives 3A and 3B in accordance with various bus signals sent to the SCSI interface bus.

At this time, the optical disk drives 3A and 3B
Since the same ID number is assigned to each of the two optical disk drives 3 by issuing a command for controlling one SCSI terminal as viewed from the host computer 2.
A and 3B simultaneously and in parallel execute the process corresponding to this command.

In this responsive operation, when the bus signal of the select SEL for selecting the optical disk drives 3A and 3B is sent from the host computer 2 (FIG. 7), each optical disk drive 3A and 3B responds to this and is busy. Busy bus signal is dropped and this busy BUS
The Y bus signal is output from the arbitration circuit 12A on the master drive side to the SCSI interface bus. As a result, the optical disc autochanger 1 preferentially sends a response signal from the master drive side.

At this time, in the arbitration circuit 12A, among the busy BUSY bus signals of the optical disk drives 3A and 3B, the logic level of the busy BUSY output from the arbitration circuit 12A rises in response to the busy BUSY bus signal that falls late. Can be lowered. As a result, the optical disc autochanger 1 outputs a busy-busy bus signal to the host computer 2 after waiting for a state in which both the optical disc drives 3A and 3B can handle subsequent operations.

In the subsequent transfer of commands, data, etc., the optical disk drive 3A on the master drive side is given priority over the SCSI interface bus.
A more specified bus signal is transmitted.

Regarding the bus signal of the request REQ that prompts the host computer 2 to transfer data (FIG. 8), the arbitration circuit 13A on the master drive side responds to the SCSI signal of the request REQ that falls late by a SCSI signal. The interface bus is switched to active, whereby the request REQ bus signal is output to the host computer 2 after waiting for a state in which both the optical disk drives 3A and 3B can cope with the subsequent operation.

As a result, the optical disc autochanger 1 is formed so that the handshake with the host computer 2 can be surely performed when the two optical disc drives 3A and 3B operate in parallel at the same time. Has been made available for transfer.

Thus, in response to the command transferred from the host computer 2, the optical disk drives 3A and 3B sequentially record the data output from the host computer 2 on the optical disk H, whereby the optical disk autochanger. In 1, the backup optical disk H is automatically formed in the slave optical disk drive 3A.

At the time of recording / reproducing this data, the optical disk drives 3A and 3B communicate with each other by RS232C, and if the master side cannot reproduce correctly, the reproduced data is output from the slave side. As a result, in the optical disc autochanger 1, the slave side optical disc drive 3B can substitute the operation on the master side simply and quickly.

Further, when the data cannot be correctly recorded / reproduced, the optical disc drives 3A and 3B detect a state in which the command is not input for a prescribed time, and restore the data by the data of the optical disc drive 3A or 3B which is correctly recorded / reproduced. As a result, in the optical disc autochanger 1, data is automatically restored without any burden on the host computer 2 by effectively utilizing the free time such as recording / reproducing processing.

(3) Effects of the Embodiments With the above configuration, the optical disk drives 3A and 3B are provided.
By assigning the same ID number to the SCSI interface bus and sending the bus signal preferentially from the optical disk drive 3A on the master side,
The host computer 2 issues a command to control one SCSI terminal to issue two optical disk drives 3A.
And 3B can execute the processing corresponding to this command simultaneously in parallel, whereby the optical disk drive 3B on the slave side automatically performs the backup optical disk H.
Can be formed.

Further, at this time, in the optical disk drives 3A and 3B, both optical disk drives 3A and 3B
By sending a busy and request bus signal after waiting for a state in which both B can respond to the subsequent operation, the processing corresponding to this command is executed in parallel at the same time, and the data output from the host computer 2 is surely output. It is possible to receive, and it is possible to reliably execute the recording / reproducing process.

Further, during this reproduction, when the master drive side cannot reproduce correctly, the correctly reproduced data is sent from the slave side optical disk drive 3B operating in parallel, and an accident occurs simply and quickly. The operation on the master side can be backed up.

When recording / reproducing cannot be performed correctly,
By effectively utilizing the free time of the host computer 2 and recovering the data from the data of the optical disk drive which can be correctly recorded and reproduced, the host computer 2
Data can be automatically restored without burdening the user.

Further, at this time, by synchronizing the rotation phases of the optical disc H between the master side and the slave side, it is possible to maintain the optical heads in two optical disc drives so that the optical head always scans the corresponding portions, and thus recording is performed. The waiting time at the time of reproduction can be reduced.

Further, since the carrier mechanism 4 for supplying the optical disk H to the optical disk drive is shared so that the master side and the slave side can simultaneously carry the corresponding optical disks H, the correspondence relationship of the optical disks H is maintained. Thus, the optical disc H can be reliably transported, and the reliability can be improved accordingly.

(4) Second Embodiment FIG. 11 is a block diagram showing an optical disc changer according to a second embodiment of the present invention. In the structure shown in FIG. 11, the same structures as those in the first embodiment are designated by the same reference numerals, and the duplicated description will be omitted.

This optical disc autochanger 30
Is an optical disk drive 3A having the same configuration as that of the first embodiment.
And 3B are arranged side by side in the vertical direction, and a shelf 31 for accommodating the optical disk H is arranged and formed above the optical disk drives 3A and 3B. Further, in the optical disc autochanger 30, the disc input / output unit 32 for inserting and ejecting the optical disc H is formed above the shelf 31, and the disc input / output unit 32 and the optical disc drives 3A and 3B are provided.
The transport mechanism 33 faces the disc insertion opening and the shelf 31 of
Is arranged.

Here, the carrying mechanism 33 includes a guide 34 extending vertically and an automatic changer controller 35.
It is formed by a transport unit 36 that is driven by and moves up and down along the guide 34. The transport unit 36 is controlled by the auto changer controller 35,
The optical disk H loaded from the disk input / output unit 32 is transported to the shelf 31 and stored at a prescribed position on the shelf 31. On the contrary, the optical disk H stored in the shelf 31 is transported to the disk input / output unit 32.

Further, the transport section 36 transports the optical disc H ejected from the disc insertion openings of the optical disc drives 3A and 3B to the shelf 31, and conversely, the optical disc H stored in the shelf 31 to the optical disc drive 3A. And 3B to the disk insertion port. As a result, the optical disc autochanger 30 is formed so that the optical discs H stored in the shelves 31 can be freely exchanged.
The optical disk H housed in No. 1 is loaded in the optical disk drives 3A and 3B so that recording and reproduction can be performed.

Here, the optical disk drives 3A and 3B
Are arranged so that the insertion openings are vertically separated by a distance L, and the transport section 36 for transporting the optical disk H is spaced by a distance equal to this distance L so that two transport sections are formed. Has been done.

As a result, in the optical disc autochanger 30, as in the first embodiment, the corresponding optical discs H are simultaneously stored in the shelves 31 while maintaining the corresponding relations with the optical disc drives 3A and 3B. It is formed so as to be able to be transported between, and thereby, reliability can be ensured.

The autochanger controller 35 is
It is connected to the host computer 2 by the SCSI interface bus, and further connected to the optical disk drives 3A and 3B by the daisy chain of the SCSI interface bus. As a result, in the optical disc auto changer 30, the auto changer controller 35 and the optical disc drive 3A are provided.
And 3B are controlled by the host computer 2 to switch their operations so that a desired optical disk H can be recorded and reproduced. Further, the autochanger controller 35 is adapted to be connected to the optical disk drives 3A and 3B by an RS232C interface bus.

Thus, in the optical disc autochanger 30, a dedicated control mechanism is formed in the transport mechanism of the optical disc H to transport the optical disc H, and at this time, the optical disc drives 3A and 3B are simultaneously operated in parallel to perform backup processing. Is designed to run.

According to the configuration shown in FIG. 11, the optical disc H
Even when the optical disc H is transported by forming a dedicated control mechanism in the transport mechanism of No. 1, the same effect as that of the first embodiment can be obtained.

(5) Other Embodiments In the above embodiments, the case where the optical disk drives having the same structure are used has been described, but the present invention is not limited to this, and the optical disk drive dedicated to the slave and the optical disk drive dedicated to the master. You may make it form a system by. By doing so, the arbitration circuit can be omitted on the slave side, and the control signals S1A, S
Since the wirings for 1B and S2 can also be omitted, the configuration can be simplified accordingly.

Further, in the above-described embodiment, the case where the present invention is applied to the optical disc autochanger formed by two optical disc drives and the common transport mechanism has been described, but the present invention is not limited to this. It can also be widely applied to the case where an optical disc autochanger is formed by an optical disc drive having an original transport mechanism. By doing so, it is possible to form a system of this type by connecting two optical disk drives having the same configuration as needed.

Furthermore, in the above-mentioned embodiments, the case where the recording / reproducing is selectively performed on a plurality of optical disks has been described, but the present invention is not limited to this, and is widely applied to an optical disk drive for manually loading and ejecting optical disks. can do.

Further, in the above-mentioned embodiment, the case where data is restored by effectively utilizing the free time has been described.
The present invention is not limited to this. For example, in the case where sufficient time can be secured at night, for example, the data recovery process may be started at a prescribed time by a timer or the like, and further, from the operator. Data recovery may be started by inputting the command.

Further, in the above-mentioned embodiment, the case where the present invention is applied to the write-once type optical disk device has been described, but the present invention is not limited to this, and a data recording device such as a magneto-optical disk device, and further a magnetic recording device. It can be widely applied to various information processing devices such as a data streamer using a tape and various database systems.

[0126]

As described above, according to the present invention, in the recording / reproducing section for recording / reproducing data on / from the specified recording medium, the same identification code is assigned and connected to the common bus, and at the same time from the master side. By sending the specified output signal with priority, the host can issue a command to control one terminal, and the two recording / reproducing units can simultaneously execute the data recording / reproducing, As a result, data can be backed up easily and surely on the slave side.

[Brief description of drawings]

FIG. 1 is a block diagram showing a detailed configuration of an optical disc autochanger according to an embodiment of the present invention.

FIG. 2 is a block diagram showing an overall configuration of the optical disc autochanger of FIG.

3 is a connection diagram showing an arbitration circuit of the optical disc drive of FIG. 1. FIG.

FIG. 4 is a signal waveform diagram for explaining the operation of the arbitration circuit of FIG.

5 is a connection diagram showing another arbitration circuit of FIG. 1. FIG.

FIG. 6 is a signal waveform diagram for explaining a SCSI interface bus.

FIG. 7 is a signal waveform diagram for explaining a response in the optical disc autochanger of FIG. 1.

8 is a signal waveform diagram for explaining data transfer in the optical disc autochanger of FIG.

9 is a schematic diagram for explaining rotation synchronization of an optical disc in the optical disc changer of FIG.

10 is a flow chart for explaining a recording / reproducing process by the optical disc changer of FIG.

FIG. 11 is a block diagram showing the configuration of an optical disc changer according to another embodiment.

[Explanation of symbols]

 1, 30 Optical disk changer 2 Host computer 3A, 3B Optical disk drive 5, 31 Shelf 4, 36 Transport mechanism 9A, 9B System controller 12A, 12B SCSI controller 12A-19A Arbitration circuit H Optical disk

Claims (15)

[Claims] 1. An operation is switched in response to a command input from a host, predetermined data is recorded on a first recording medium and a second recording medium, and recorded on the first recording medium and a second recording medium, respectively. It has first and second recording / reproducing units for reproducing data, and the first and second recording / reproducing units have the same identification code so that they can be seen by one terminal device when viewed from the host. Assigned and connected to the host by a common bus, each operation is switched in response to a command input via the common bus, and a specified output signal is sent to the host in response to the switching of the operation However, the output signal output from the master-side recording / reproducing unit that is set on the master side and the slave-side is prioritized over the output signal output from the slave-side recording / reproducing unit. Te, the information processing apparatus characterized by delivering to the host. 2. The first and second recording / reproducing units, when an error occurs in the recording / reproducing unit on the master side, replace the recording / reproducing unit on the master side with the recording / reproducing unit on the slave side. The information processing apparatus according to claim 1, wherein the data reproduced by the unit is sent to the host. 3. The first and second recording / reproducing units, when data cannot be correctly recorded or reproduced on the recording medium, correct recording or reproducing by the data recorded on the recording medium of the other recording / reproducing unit. The information processing apparatus according to claim 2, wherein the data that cannot be restored is restored. 4. The first and second recording / reproducing sections each have a signal processing circuit, and the signal processing circuit outputs the output signal output from the recording / reproducing section on the master side, 2. The information processing apparatus according to claim 1, wherein the output signal output from the recording / reproducing unit on the slave side is transmitted to the host with priority. 5. The information processing apparatus supplies a storage unit for storing a plurality of the recording media, supplies the recording medium stored in the storage unit to the first and second recording / reproducing units, and further comprises: The information processing apparatus according to claim 1, further comprising a transport mechanism that stores the first and second recording media discharged from the first and second recording / reproducing units in the storage unit. 6. The information processing apparatus according to claim 5, wherein the transport mechanism is controlled and operated by the recording / reproducing unit on the master side. 7. The first and second recording / reproducing units are configured such that the recording medium is inserted through the specified insertion port and that the recording medium is ejected through the insertion port. The transport mechanism is arranged so as to be separated by a predetermined distance, and the transport mechanism is integrally moved by the movable mechanism of 1, and the recording medium stored corresponding to the distance of the insertion opening is stored in the first and second recording media. And the recording medium discharged from the first and second recording / reproducing sections are simultaneously stored in a storage position formed corresponding to the distance of the insertion slot. The information processing device according to claim 6. 8. The information processing apparatus supplies a storage unit for storing a plurality of the recording media, supplies the recording medium stored in the storage unit to the first and second recording / reproducing units, and The information processing apparatus according to claim 3, further comprising a transport mechanism that stores the first and second recording media discharged from the first and second recording / reproducing units in the storage unit. 9. The information processing apparatus according to claim 8, wherein the transport mechanism is controlled and operated by the recording / reproducing unit on the master side. 10. The first and second recording / reproducing units are configured such that the recording medium is inserted through the specified insertion opening, and the recording medium is ejected through the insertion opening. The transport mechanism is arranged so as to be separated by a predetermined distance, and the transport mechanism is integrally moved by the movable mechanism of 1, and the recording medium stored corresponding to the distance of the insertion opening is stored in the first and second recording media. And the recording medium discharged from the first and second recording / reproducing sections are simultaneously stored in a storage position formed corresponding to the distance of the insertion slot. The information processing device according to claim 9. 11. The information processing apparatus according to claim 10, wherein the recording medium is an optical disk, and the first and second recording / reproducing units synchronize the rotation phases of the optical disks. 12. An information processing apparatus for switching operation in response to a command input from a host, recording predetermined data on a prescribed recording medium, and reproducing the data recorded on the recording medium. The same identification code is assigned to another information processing apparatus that records and reproduces the same recording medium as the apparatus so that the terminal apparatus looks like one terminal apparatus when viewed from the host, When connected to the host via a common bus, set on the master side, and set another information processing device on the slave side, the other information is responded to in response to a command input via the common bus. The operation is switched in the same manner as the processing device, and a prescribed output signal is sent to the host in response to the switching of the operation together with the other information processing device, and output from the other recording / reproducing unit. When the output signal is sent to the host in preference to the output signal and is set on the slave side and another information processing device is set on the master side, the signal is input via the common bus. An information processing apparatus, which operates in response to a command and is switched in the same manner as the other information processing apparatus. 13. When the data is not correctly reproduced by the other information processing device in the state of being set on the slave side, the reproduced data is output to the host instead of the other information processing device. The information processing device according to claim 12. 14. When data cannot be correctly recorded or reproduced on the recording medium, the data recorded on the recording medium of the other information processing apparatus is used to restore the data that cannot be correctly recorded or reproduced, 14. The information processing apparatus according to claim 13, wherein when data cannot be correctly recorded or reproduced on the recording medium in the information processing apparatus, corresponding data is reproduced from the recording medium and output to the other information processing apparatus. apparatus. 15. The recording medium of the information processing device is an optical disc, and the optical disc has a rotation phase-synchronized with a rotation of the optical disc of the other information processing device. The information processing device according to claim 14.