JPH03172920A - Controller for information recording disk device - Google Patents

Abstract

PURPOSE:To smoothly perform a restoring operation by stopping each of a DMA controller, an error correcting circuit, and a formatter with its own operation error signal and an operation error informing signal from the others. CONSTITUTION:The DMA controller 4, the error correcting circuit 6, and the formatter 7 constituting a controller 1 are internally provided with operation abnormality processing circuits 4a, 6a, and 7a respectively. If one of operation abnormality processing circuits 4a, 6a, and 7a detects the operation error in its own circuit, it stops its own operation at a prescribed timing and informs the other circuits of the occurrence of operation error. In being informed of the occurrence of operation error, the other operation abnormality processing circuits stop their operation at a prescribed timing. Contents of the error are read into a microcomputer 3 to perform the recovery operation.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a control device for an information recording disk device that is connected between a host combinator and an information recording disk device and controls the disk device.

(Prior Art) In recent years, information recording disk devices such as magneto-optical disk devices have been used for recording computer data, document files, and the like.

The magneto-optical disk cartridge used in this magneto-optical disk device is a magneto-optical disk for recording/playback that can be freely erased and rewritten, and is made of resin for ease of handling and to make it removable from the recording/playback device. It is housed in a case.

FIG. 4 is a configuration diagram showing an example of a magneto-optical disk used in the disk device shown in FIG. 5, which will be described later. FIG. 4A is a bottom view, and FIG.

As shown in the figure, the conventional magneto-optical disk 22 has a substrate 22a made of transparent resin, such as polycarbonate, on one surface of which is made of Fe, Co, etc. for recording and reproducing information using the magneto-optic effect. , Tb.

A magneto-optical film (MO film) 22b made of Gd or the like is formed,
Further, a protective film 22c made of ultraviolet curable resin or the like is formed on top of the protective film 22c, and a hub 24 made of a metal plate for driving the disk 22 is fixed to the center thereof. It is housed in a manufactured case and becomes a magneto-optical disk cartridge.

In the recording area 23 of the magneto-optical film 22b of the disk 22 where information is recorded/reproduced, a large number of recording tracks are formed in a spiral or concentric pattern at a pitch of 1.5 μm. Each recording track has 21 sectors each consisting of a management area in which management information is recorded in advance and a data area in which information is recorded/reproduced.

This management area is provided at the beginning of each sector, and this data area is provided following the management area.

FIG. 5 is an explanatory diagram of recording and reproducing operations of an example of a magneto-optical disk device controlled by the control device of FIGS. 1 and 7, which will be described later.

As shown in the figure, the conventional magneto-optical disk device 21 is
The magneto-optical disk 22 is mounted and used, and is comprised of a base 25, an electromagnet 26, an optical recording/reproducing device 27, a feed device 40, and the like.

The above-mentioned magneto-optical disk 22 is driven by a spindle motor (not shown) fixed to the base 25.
The protective film 22c is driven to rotate at 00 rpm.
An electromagnet 26 disposed on the side with a gap in between applies a perpendicular bias magnetic field of a predetermined polarity to the magneto-optical film 22b as required. Moreover, the substrate 22a
From the side, information is recorded and reproduced onto and from the magneto-optical film 22b using a laser beam 36 from the optical recording and reproducing device 27.

This optical recording/reproducing device 27 includes a laser diode 28,
Collimating lens 29, beam splitter 30, rising prism 31, objective lens 32, polarizing beam splitter 33, condensing lens 34A.

34B, photodiodes 35A, 35B, etc.

The laser light emitted from the laser diode 28 is made into parallel light by the collimating lens 29, and then the beam cross section is shaped into a predetermined shape by a beam shaping prism (not shown), and the beam splitter 3
The light passes through o and enters the rising prism 31. The laser beam 36 reflected by the raising prism 31 is directed by the objective lens 32 into a light spot 37 with a minute diameter onto the surface of the magneto-optical film 22b on the recording track of the recording area 23 of the disk 22. is irradiated.

A light spot 3 irradiated onto the surface of this magneto-optical film 22b
7 has a light intensity suitable for recording when the disk device 21 is operating in the recording mode, and has a light intensity suitable for reproduction when the disk device 21 is operating in the -1 playback mode. The output of the laser diode 28 is controlled by an output control device (not shown) so as to achieve the desired result.

In this recording mode, the magneto-optical film 22b on the recording track is
The perpendicular magnetization direction of is only where the light spot 37 hits.
It is reversed by the bias magnetic field 1 by the electromagnet 26, thereby recording this digital signal.

In the case of the reproduction mode, the light reflected on the surface of the magneto-optical film 22b has a rotation direction of the plane of polarization that differs depending on the perpendicular magnetization direction of the magneto-optical film 22b due to the magneto-optic effect. The light is reflected by the beam splitter 30 via the objective lens 32 and the rising prism 31, and is incident on the polarizing beam splitter 33 via a half-wave plate (not shown). The h laser beam transmitted through the polarizing beam splitter 33 is transmitted through the condensing lens 34.
A, the laser beam is condensed by the photodiode 35A, wrinkled into an electric signal, and output as an Akita signal.The laser beam reflected by the polarizing beam splitter 33 is condensed by the condenser lens 34B, and the laser beam is condensed by the condenser lens 34B. Photodiode 35B
It is converted into an electrical signal and output as a detection signal.

At this time, the magnitudes of both detection signals change in opposite directions depending on the direction of rotation of the polarization plane due to the action of the polarization beam splitter 33, so the digital signal is reproduced from the difference between these two detection signals. be exposed.

Of the optical recording/reproducing device 27, the laser diode 28, the collimating lens 29, and the beam splitter 30
, polarizing beam splitter 33, condensing lenses 34A, 34
B, photodiode 35A.

A fixed part unit 27-1 consisting of 35B etc. is fixed to the base 25, and a movable part unit 27-2 consisting of the raising prism 31, objective lens 32 etc. is attached to the movable part 40b of the feed device 40. It is installed.

In this feed device 40, the movable part 40b is connected to the base 25.
The drive force of the linear motor 40a of this device 40 fixed to moves the optical spot 37 in the radial direction of the disk 22 along a guide rail (not shown) via a bearing 40c, and directs the light spot 37 to the recording area of this disk 22. The recording track is searched by performing a so-called feeding operation in which the recording track 23 is moved from the inner diameter to the outer diameter. Note that this base 25 is configured to be held by the main chassis of the device 21 (not shown) via a vibration isolating mechanism (not shown).

In addition, so-called focus servo, which automatically makes the focus of the optical spot 37 follow the surface of the magneto-optical film 22b in response to surface wobbling of the disk 22, is based on a focus servo signal based on the detection signal output. Based on this, the vertical position of the objective lens 32 is controlled by a focus servo actuator 38 mounted on the movable part 40b of the feed device 40.

Also, due to the eccentricity of the disk 22, the optical spot 3
The so-called tracking servo that automatically tracks the disk 22 on the recording track is based on a tracking servo signal based on the detection signal output from the management area, and the position of the objective lens 32 in the radial direction of the disk 22 is controlled by the movable part. 4
Tracking servo actuator 3 mounted on 0b
9. The movement range of the optical spot 37 in the radial direction of the disk 22 due to this tracking servo operation is normally limited to several hundred μ-. The tracking servo operation and rough positioning are responsible for the feed operation.

The operation of the conventional magneto-optical disk device 21 described above has been outlined to explain its operating principle, but in actual operation, the recording mode is erase (erase), record (write). ) and verification.

That is, in the conventional magneto-optical disk 22 described above,
Since the magneto-optical film 22b cannot be overwritten, which is possible with magnetic tapes, magnetic disks, etc., prior to the recording operation, the recording section is first erased, and then the recording operation is performed. be exposed. Moreover, this magneto-optical film 2
Since 2b lacks reliability, a verification operation is performed after this recording operation. In other words, playback (read) of this recording section
is performed, the recorded signal and the reproduced signal are compared, and if they match, the process moves to the next operation. In the case of non-coincidence, the recorded signal of this portion is recorded again in a pre-provided alternative area, and then a so-called alternative process is performed in which verification and recording addresses are changed.

The magneto-optical disk device! 21 is controlled by this device 21
and the host combiator.

FIG. 6 is an explanatory diagram of the control operation of the control device shown in FIGS. 1 and 7, which will be described later. (A) is in recording mode, (CB)
indicates the playback mode.

7 is a block diagram showing an example of a conventional control device for a magneto-optical disk device, and FIG. 8 is an explanatory diagram of an abnormality handling operation in the control device of FIG. 7. FIG. mode(
CB) in the figure is a case of an address error in the formatter during recording operation, and CB) of the same figure is a case of a data number error in ECC during playback mode.

As shown in FIGS. 6 and 7, a conventional control device 51
is connected between the host computer 11 and the magneto-optical disk device 21.

This control device 51 includes an interface 2, a buffer memory 5, a mechanism control device 8, a microcomputer (hereinafter abbreviated as microcomputer) 53, and a DMA controller 54.
, an error correction circuit (hereinafter abbreviated as ECC) 56, a formatter 57, and the like.

This interface 2 is connected to the host computer 1.
1 and the microcomputer 53, and also relays data exchange between the host computer 11 and the DMA controller 53. The microcomputer 53 controls the operations of the DMA controller 54, ECC 56, formatter 57, and mechanism control device 8. DMA controller 5
4 is an ECC between the interface 2 and the buffer memory 5 and between the buffer memory 5 and the ECC based on the command from the microcomputer 53.
Controls data exchange between 56 and 56. The buffer memory 5 temporarily stores data based on commands from the DMA controller 54. The ECC 56 performs error correction code addition, collation operation, error detection/correction, etc. based on instructions from the microcomputer 53. The formatter 57 modulates and demodulates data based on instructions from the microcomputer 53. The mechanical system control device 8 has a built-in microcomputer (not shown) for mechanical system control, and controls each operation of the above-mentioned magneto-optical disk device 21 based on commands from the microcomputer 53.

As shown in FIG. 6(A), in the recording mode, the host computer 11 outputs signals such as recording commands and recording section designation to the microcomputer 53 via the interface 2. Recording data is supplied to the buffer memory 5 via the interface 2 and the DMA controller 54. During a recording operation, the ECC 56 adds an error correction code to the record data from the buffer memory 5, and the formatter 57 modulates the data to generate a record signal. The mechanical system control device 8 performs search operations, erase operations, etc. on the disk device 21.
In this disk device 21, switching instructions for the recording operation and collation operation, control of the bias magnetic field by the electromagnet 26, control of the output intensity of the laser diode 28, control of the position of the objective lens 32 in the recording section, etc. are performed. During the recording operation, recording signals are sequentially recorded one sector at a time in consecutive sectors of the recording track in the recording area 23 of the disk 22.

After the recording operation is completed, the disk device 21 supplies a reproduction signal for a verification operation to the formatter 57. In the formatter 57, demodulation of the reproduced signal is performed, and in the ECC 56, the formatter 5
The reproduced data from 7 is compared with the recorded data from the buffer memory 5, and if necessary, the microcomputer 5
3, the above-described alternative processing is controlled, and the microcomputer 53 reports the end of the recording command to the host computer 11.

As shown in FIG. 2B, in the playback mode, the host computer 11 outputs signals such as playback commands and playback section designation to the microcomputer 53. Based on this command, the mechanical system control device 8 instructs the disc device 21 to switch between search operation and reproduction operation, controls the electromagnet 26, controls the laser diode 28, and controls the objective lens in the reproduction section. 32 is controlled, and a playback signal is supplied from this disk device 21 to the formatter 57. This formattuta 57
, the reproduced signal is demodulated, error detection and correction of the reproduced data is performed in the ECC 56 , and the reproduced data is output to the host computer 11 via the buffer memory 5 .

Next, an explanation will be given of an abnormality handling operation when an operational error occurs in the ECC 56, formatter 57, etc. in the control device 51.

The types of operational errors that may occur in each of the above-mentioned components of the control device 51 are as follows. In the ECC 56, the recording mode (
A data number error occurs when the number of recorded data commanded by the microcomputer 53 and the number of recorded data requested by the former 57 does not match during recording mode (verification operation), and from the DMA controller 54 during recording mode (verification operation). A collation error occurs when the results of collation between the recorded data and the playback data from the formatter 57 do not match.In the playback mode, the number of recorded data instructed by the microcomputer 53 and the number of recorded data requested by the formatter 57 do not match. A data count error occurs in the case of a data count error, which occurs when the recorded data from the DMA controller 54 and the reproduced data from the formatter 57 do not match in the recording mode (verification operation), a collation error occurs when the microcomputer 53, in the reproduction mode, There are data number errors, which are cases where the number of data to be reproduced according to the command and the number of data to be reproduced from the formatter 57 do not match, and uncorrectable errors, which are cases where error correction cannot be performed on the data reproduced from the formatter 57. The formatter 57 also detects an address error when the address of the sector to be recorded cannot be detected in the disk device 21 during the recording mode (recording operation).
In the playback mode, in addition to address errors that occur when the disk device 21 cannot detect the address of the sector to be played according to the commands of the microcomputer 53, all operational errors of the mechanical control device 8 and the disk device 21 are caused by formatting errors. 57 operation error. Note that no operational error occurs in the DMA controller 54.

If an operation error as described above occurs in the control device 51, it is necessary to temporarily stop the operation of each component and perform a repair operation, so the microcomputer 53 issues an operation stop command. That is, each component has a built-in register (not shown) into which the operation command from the microcomputer 53 is written, and the microcomputer 53 determines the result of the operation based on the operation command (normally completed or one of the types described above). By detecting a status signal from a register indicating that an operation error has occurred, etc., the above-mentioned operation error is detected, and the microcomputer 53 issues an operation stop command to each component.

For example, as shown in FIG. 8(A), in the recording mode, the address error occurs in the formatter 57 during the recording operation for sector 3 during the recording operation for sectors 1 to 5. In this case, when the microcomputer 53 detects this address error for sector 3, the operation command for sector 4 has already been issued to each component, so the operation stop command for sector 5 is issued to each component. By issuing this to an element, the operation for sector 5 in each component is stopped.

In addition, as shown in FIG. 3B, in the reproduction mode, sector 2 is in the middle of performing a reproduction operation on sectors 1 to 5.
If the data count error occurs in the formatter communication section of the ECC 56, the microcomputer 53 issues an operation stop command for sector 4, since the operation command for sector 3 has been issued to each component. By issuing this to each component, the operation for sector 4 in each component is stopped.

Note that this ECC 56 is composed of three parts: a formatter communication section, a processing section, and a DMA controller communication section, and since it takes time for the above-mentioned error correction in this processing section in playback mode, the error correction for the same sector in these three sections The system is configured to delay the operation timing by one sector by automatically supplying one sector of playback data with a delay of one sector each, thereby increasing the processing speed. It has become.

(Problem to be Solved by the Invention) As described above, in the conventional control device 51 configured as described above, when an operation error occurs, the microcomputer 5
According to No. 3, since the operation stop command is issued after the operation error is detected, there is a problem that the timing of the operation stop command is slow. Since this operation stop command is delayed, the operation for the sector next to the sector in which the operation error has occurred is performed before the operation is stopped, making the repair operation complicated. As a countermeasure for this, the microcomputer 5
In order to speed up the control operation in step 3, the microcomputer 53 becomes complicated and costs increase.

The present invention has been made with attention to the above points, and an object of the present invention is to provide a control device for an information recording disk device that can stop the operation at an early timing when an operation error occurs. .

(Means for Solving the Problems) A control device for an information recording disk device of the present invention is connected between a host computer and an information recording disk device,
The control device for controlling the disk device includes at least three components, each of which is a DMA controller, an error correction circuit, and a formatter, each controlled by a micro combinator. an operation error occurrence signal supplied from an operation error detection circuit within each element when an operation error occurs within each of the three components;
Or an automatic operation stop that outputs an automatic operation stop signal that stops the operation of its own element at a predetermined timing in response to an operation error notification signal supplied from the operation error notification circuit of the female element when an operation error occurs in the female element. The apparatus is configured to include malfunction treatment means having at least a circuit.

(Embodiment) In the control device for an information recording disk device of the present invention, in the above-described control device, when an operation error occurs in each of at least the three components of the DMA controller, ECC, and formatter, An operation error occurrence signal is supplied from an operation error detection circuit within the own element, or when an operation error occurs in the female element, an operation error notification circuit is supplied from the female element's operation error notification circuit to notify that an operation error has occurred. The above object is achieved by providing an operation abnormality treatment means having at least an automatic operation stop circuit that outputs an automatic operation stop signal that stops the operation of its own element at a predetermined timing in response to an operation error notification signal.

An embodiment of the present invention will be comparatively explained under the same conditions as the above-mentioned conventional example.

FIG. 1 is a block diagram showing an example of a control device for a magneto-optical disk device, which is an embodiment of the control device for an information recording disk device of the present invention, and FIG. 2 shows each component of the control device in FIG. 1. This is a block diagram of the malfunction treatment circuit in the same figure (A).
DMA controller malfunction treatment circuit, same figure (B)
3 is an explanatory diagram of the abnormality processing operation in the control device of FIG. 1. FIG. (B) shows a verification error in ECC during recording mode (verification operation), and (C) shows an address error in the formatter during recording mode (recording operation). in the case of,
(D) in the same figure shows a case of a data number error in the ECC in the playback mode, (E) in the same figure shows a case of an uncorrectable error in the ECC in the playback mode, and (F) in the same figure shows the address in the formatter in the playback mode. This is a case of error.

As shown in FIG. 1 and the above-mentioned FIG. 6, a control device 1 according to an embodiment of the present invention is connected between the host computer 11 and the magneto-optical disk device 21. As shown in FIG.

The control device 1 includes an interface 2, a DMA controller 4, a buffer memory 5, an ECC 6, a formatter 7, a mechanism control device 8, and the like. This control device 1 is different from the control device 51 of the conventional example described above.
The only difference is that the A controller 4, the ECC 6, and the format tough are each equipped with malfunction treatment circuits 4a, 6a, and 7a, and the microcomputer 3 has a smaller processing capacity, so the parts are the same as those described in the conventional example. , the explanation thereof will be omitted.

As shown in FIG. 2(A), this DMA controller 4
The operation abnormality treatment circuit 4a is composed of an automatic operation stop circuit 4c.

When an operation error notification signal notifying that an operation error has occurred in the ECC 6 or the format tough, which will be described later, is supplied from the ECC 6 to the automatic operation stop circuit 4c, the automatic operation stop circuit 4c sends the An automatic operation stop signal is output that causes the DMA controller 4 to stop its own operation at a prompt, predetermined timing.
The operation is stopped at a predetermined timing as soon as possible, as will be described later. In addition, this automatic operation stop signal is
The signal is also supplied to a register 4b built in the controller 4, and the above-mentioned status signal is outputted from the register 4b in response to a control signal from the microcomputer 3, thereby performing the repair operation.

As shown in FIG. CB), the operation abnormality treatment circuit 6a of the ECC 6 is comprised of an automatic operation stop circuit 6c, an operation error notification circuit 6d, an operation error detection circuit 6e, and the like.

When an operation error of the type described above occurs in this ECC 6, an operation error signal is supplied to the operation error detection circuit 6e, and this operation error is detected in the operation error detection circuit 6e, indicating that an operation error has occurred. An operation error occurrence signal indicating that the automatic operation stop circuit 6C
and an operation error notification circuit 6d. In this operation error notification circuit 6d, an operation error notification signal is outputted to the DMA controller 4 and the format tough, respectively, in response to this operation error occurrence signal. Further, an operation error notification signal from the formatter 7 is supplied to an automatic operation stop circuit 6c and an operation error notification circuit 6d, respectively. In response to the operation error notification signal from the formatter 7, an operation error notification signal is outputted to the DMA controller 4 in the operation error notification circuit 6d.

Further, in the automatic operation stop circuit 6c, the automatic operation stop signal is outputted in response to the operation error occurrence signal or the operation error notification signal, whereby the operation of the ECC 6 is stopped at the earliest possible predetermined timing as described later. It will be stopped at

This automatic operation stop signal is also supplied to the register 6b built in the ECC 6. Further, the operation error detection circuit 6e
The operation error content signal representing the type of operation error as described above is supplied to this register 6b, and the aforementioned status signal is outputted from this register 6b in response to the control signal from the microcomputer 3. The repair operation is performed by.

As shown in FIG. 3C, the Format Tough operation abnormality treatment circuit 7a is an automatic operation stop circuit 7c.

It is composed of an operation error notification circuit 7d, an operation error detection circuit 7e, and the like.

When an operation error of the type described above occurs in the formatter 7, the mechanical control device 8, and the disk device 21, an operation error signal is supplied to the operation error detection circuit 7e, and the operation error detection circuit 7e This operation error is detected and the operation error occurrence signal is
The signal is supplied to an automatic operation stop circuit 7c and an operation error notification circuit 7d, respectively. In this operation error notification circuit 7d, an operation error notification signal is outputted to the ECC 6 in response to this operation error occurrence signal. Also, this...JECC
The operation error notification signal from 6 is then supplied to the automatic operation stop circuit 7C. In this automatic operation stop circuit 7c, the automatic operation stop signal is outputted in response to the operation error occurrence signal or operation error notification signal, whereby the operation of the format tough is stopped at a predetermined timing as soon as possible, as will be described later. be done.

This automatic operation stop signal is also supplied to the register 7b built into the format tough. Further, an operation error content signal is supplied from the operation error detection circuit 7e to this register 7b, and in response to a control signal from the microcomputer 3,
The above-mentioned status signal is outputted from this register 7b, and the above-mentioned repair operation is thereby performed.

As shown in FIG. 3(A), in the recording mode, when the data number error occurs in the ECC 6 during the recording operation for sector 3 during the recording operation for sectors 1 to 5, Due to the automatic operation stop signal,
The operation of the sector 4 in the ECC 6 is stopped, and the operation of the sector 4 in the DMA controller 4 and the format tough is also stopped in response to the operation error notification signal.

As shown in the same figure (B), in the recording mode, if the verification error occurs in the ECC 6 during the verification operation for sector 3 during the recording operation for sectors 1 to 5, an automatic operation stop signal is issued. , stops the operation of sector 4 in ECC 6, and also stops the operation of sector 4 in DMA controller 4 and format tough by the operation error notification signal.

As shown in (C) of the same figure, in the recording mode, if the address error occurs in the format tough during the recording operation for sector 3 during the recording operation for sectors 1 to 5, an automatic operation stop signal is sent. This causes the formatter 7 to stop operating on sector 4, and the operation error notification signal causes the DMA controller 4 to
and stops the operation of sector 4 in ECC6.

As shown in (D) of the same figure, in the playback mode, sector 1
- If the data count error occurs in the formatter communication section of the ECC 6 for sector 3 during a playback operation for sector 5, an automatic operation stop signal will cause the formatter communication section of the ECC 6 to perform a playback operation on sector 4 of the ECC6. The operation of sector 3 in the processing unit and DMA controller communication unit is stopped, and the operation of sector 4 in the format tough is stopped by the operation error notification signal, so that there is enough time to stop the operation of DMA controller 4. Then, as in the case of the conventional example, the operation is performed for sector 3 in response to an operation stop command from the microcomputer 3.

As shown in (E) of the same figure, in the playback mode, if the uncorrectable error occurs in the processing section of the ECC 6 for sector 2 during the playback operation for sectors 1 to 5, automatic operation stops. The signal causes sector 4 in the formatter communication section of the ECC 6 to be changed to sector 3 in the processing section and DMA controller communication section of the ECC 6.
At the same time, the operation of sector 3 in the DMA controller 4 and sector 4 in the format tough is stopped by the operation error notification signal.

As shown in (F) of the same figure, in the playback mode, if the address error occurs in the formattuff for sector 3 during the playback operation for sectors 1 to 5, an automatic operation stop signal is sent to the formattuff. At the same time, the operation for sector 4 is stopped, and the operation for sector 4 in the formatter communication section of the ECC 6 is stopped, and the operation for sector 3 in the processing section and DMA controller communication section is stopped by the operation error notification signal.
Since there is time to stop the operation of the MA controller 4, the operation is stopped for the sector 3 in response to an operation stop command from the microcomputer 3, as in the conventional example.

In addition, in the same figure (D) and (F), an example was described in which the operation of the DMA controller 4 is stopped by an operation stop command from the microcomputer 3 because there is time to spare, but an operation error notification signal from the ECC 6 is also used. Of course, this may also be done by.

The control device 1 according to the embodiment of the present invention having the above-mentioned configuration has at least one of the three components, the DMA controller 4, the ECC 6, and the formatter 7, when an operation error occurs in each element. The operation error occurrence signal supplied from the operation error detection circuits 6e and 7e of the other elements, or the operation error notification signal supplied from the operation error notification circuits 6d and 7d of other elements when an operation error occurs in other elements. the operation abnormality treatment circuit 4a, which includes at least the automatic operation stop circuits 4c, 6c, and 7c, which outputs the automatic operation stop signal to stop the operation of its own element at a predetermined timing as soon as possible;
6a and 7a, compared to the conventional control device 51, when an operation error occurs, the timing is earlier, that is, in most cases, the operation error occurs in the sector where the operation error occurs or the next sector after the operation error occurs. Since the operation for the sector is stopped, the repair operation is carried out smoothly, the total processing speed is improved, and since the microcomputer 3 has a small processing capacity, the cost is reduced. Furthermore, even if a fatal operational error occurs, such as a failure of the disk device 21, the risk of the recorded data recorded on the disk 22 being destroyed is reduced, improving the reliability of this system. .

(Effects of the Invention) The control device for an information recording disk device of the present invention having the above-described configuration can stop the operation at an early timing when an operation error occurs, so that the repair operation can be performed smoothly. The total processing speed has been improved,
This improves the operability and functionality of this system.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram showing an example of a control device for a magneto-optical disk device, which is an embodiment of the control device for an information recording disk device of the present invention, and FIG. :1j Each control unit ζ
This is a block diagram of the malfunction treatment circuit in the component search, in which (A) is a DMA controller malfunction treatment circuit, (B) is an ECC malfunction treatment circuit, and (C) is a format vine malfunction treatment circuit. 3 is an explanatory diagram of the abnormality processing operation in the control device shown in FIG. 1, in which (A) shows the error in the number of data in the ECC during recording mode (recording operation), and (B) shows the error in the recording mode. In the case of a collation error in the ECC during (verification operation), (C) in the same figure shows that in the case of an address error in the formatter during recording mode (recording operation),
Figure (D) shows the case of a data count error in ECC in playback mode, Figure (E) shows the case of an uncorrectable error in FCC in playback mode, and Figure (F) shows the case of an address error in the formatter in playback mode. , 4th L7J
5 is a configuration diagram showing an example of a magneto-optical disk used in the disk device shown in FIG. 5, where (A) is a bottom view and (B) is a bottom view.
5 is a partially enlarged cross-sectional view, FIG. 5 is an explanatory diagram of the recording and reproducing operation of an example of a magneto-optical disk device controlled by the control device of FIGS. 1 and 7, and FIG. This is an explanatory diagram of the control operation of the control device, where (A) is in the recording mode and (B) is in the recording mode.
) is a configuration diagram showing an example of a control device of a conventional magneto-optical disk device during playback mode, FIG. In the case of an address error in the formatter in the recording mode (recording operation), (B) in the same figure shows the case in the case of a data number error in the ECC in the reproduction mode. 1...control device, 2...interface, 3...
・Microcomputer (microcomputer), 4...DMA
Controller (3 components), 5... Buffer memory, 6... Error correction circuit (ECC) (3 components), 7.
・Formatsuta (3 components), 4a, 6a, 7a・
・・Operation abnormality treatment circuit (operation abnormality treatment means), 4c, 6c, 7c ・・Automatic operation stop circuit, 6d, 7d・
- Operation error notification circuit, 6e, 7e - Operation error detection circuit, 11 - Host computer, 21 - Magneto-optical disk device (information recording disk device).

Claims (1)

[Claims] A control device that is connected between a host computer and an information recording disk device and controls the disk device, and includes at least three components each controlled by a microcomputer: a DMA controller, an error correction circuit, and a formatter. In a control device for an information recording disk device comprising: an operation error occurrence signal supplied from an operation error detection circuit within each element when an operation error occurs within each of at least the three components; , an automatic operation stop circuit that outputs an automatic operation stop signal that stops the operation of its own element at a predetermined timing in response to an operation error notification signal supplied from the operation error notification circuit of the other element when an operation error occurs in another element. What is claimed is: 1. A control device for an information recording disk device, characterized in that it is equipped with an operation abnormality treatment means having at least the following.