JP2002298496A - Disk recording device and disk recording method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk recording device that can realize proper countermeasure against a recording error caused by vibration, shock, dirt or dust or the like at recording. SOLUTION: When vibration or shock occurs during the recording, the disk recording device immediately stops laser emission and continuously restarts the recording when the vibration or shock stops. Furthermore, when dirt or dust exists on a disk during the recording, the device immediately stops laser emission and asks a user to clean the disk. After the user cleans the disk to remove the dirt and dust, the device continuously restarts the interrupted recording.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to, for example, a CD-RW
(Compact Disc Rewritable), CD-R (Compact Disc
The present invention relates to a disk recording apparatus and a disk recording method for a disk recording medium on which data can be recorded, such as Recordable).

[0002]

2. Description of the Related Art For example, CD-DA (Compact Disc-Digital Audio), C
D-ROM, CD-R (CD-RECORDABLE), CD-RW
Various discs belonging to the so-called CD family, such as (CD-REWRITABLE), have been developed and spread. CD
-DA and CD-ROM are read-only media,
The CD-R is a write-once medium using an organic dye for a recording layer, and the CD-RW is a data rewritable medium using a phase change technique. In addition, as DVD (Digital Versatile Disc), which has spread in recent years,
DVD-ROM, DVD-RAM, DVD-R, DVD
-RW, DVD + RW, etc. exist. And DV
DR is a write-once medium using an organic dye for the recording layer, and is a DVD-RAM, DVD-RW, DV
D + RW is a data rewritable medium using a phase change technique.

[0003]

By the way, for example, CD-
In a recording apparatus for a recordable disc such as an R or CD-RW disc, data may not be properly written due to vibration or impact during a recording operation, and the disc may not be able to read data after recording. . The vibration may be caused by eccentricity or eccentricity of the disk itself, or by external vibration of the apparatus. Similarly, if the recording tracks on the disk are dirty or dusty, good data recording may not be possible.

That is, vibration, shock, dirt, dust and the like cause a recording operation error, which hinders proper operation of the recording apparatus. In particular, portable recording devices, built-in recording devices for notebook computers, and external recording devices are susceptible to vibration and shock. CD-R, CD
-A disk whose type is not protected by a cartridge or the like, such as RW, is apt to be stained or dusty. For this reason, there are environmental conditions in which a recording operation error is likely to occur due to vibration, impact, dirt, dust and the like.

Further, in the case of a write-once medium such as a CD-R or DVD-R, a portion where a recording error has occurred cannot be recovered later. For this reason, even if the recording apparatus is provided with a circuit for detecting a recording error, it can only cope with the error notification to the user, and as a result, the disc is wasted. Was.

That is, even in the case of a rewritable disc, if a recording error occurs due to the above-mentioned vibration or the like, if appropriate measures cannot be taken immediately, the usability and convenience of the user will be hindered. Particularly, in the case of a write-once disc, the disc itself becomes useless and must be discarded, which causes a large problem such as waste of resources and an increase in user burden.

[0007]

SUMMARY OF THE INVENTION In view of the foregoing problems, the present invention provides a disk recording apparatus for a disk recording medium such as a CD-R or a CD-RW, which is susceptible to vibration, impact, dirt, dust and the like. It is an object of the present invention to appropriately cope with a recording operation error and to minimize a situation where a disc is wasted even in the case of a write-once disc.

Therefore, the disk recording apparatus of the present invention performs a predetermined process on input data to generate recording data for a disk recording medium, irradiates a laser beam during recording, Recording head means for recording data on a disk recording medium based on recording data supplied from recording data processing means, detecting means for detecting vibration or shock, and recording on the basis of detection of the detecting means during a recording operation A laser stopping unit capable of forcibly stopping the laser beam irradiation of the head unit, a storage unit, and a recording data process of the recording data processing unit is interrupted based on detection of the detection unit during a recording operation, and recording is performed. While recording resumption information necessary for resuming is stored in the storage means, In response to the detection status of the attack, on the basis of the recording resumption information, and control means for resuming the recording operation,
Be prepared to have.

In this case, the recording restart information includes at least position information on the disk as a position on the disk recording medium at which data recording is to be resumed continuously from the point where the recording operation was interrupted, and data at which the recording was interrupted. It is assumed that the information indicates. When the recording operation is interrupted, the control unit checks the detection status of the vibration or the impact by the detection unit at regular time intervals, and based on the recording restart information when the vibration or the impact is gone. Then, the recording operation is restarted. The detection means is a sensor that outputs a detection signal by vibration or impact applied to the disk recording device.
The detecting means is configured to detect a vibration or an impact applied to the disk recording device from tracking information obtained from reflected light information of a laser beam applied to the disk recording medium during the recording operation.

Further, according to the disk recording method of the present invention, when vibration or impact is detected during data recording by irradiating a laser beam onto a disk recording medium, the laser beam irradiation is immediately performed. Stop, further, to suspend the recording data processing, store the recording resumption information necessary when resuming recording, during the suspension of the recording operation, check the detection status of vibration or impact at regular intervals, When the vibration or the shock has disappeared, the recording operation is restarted based on the recording restart information.

According to such a disk recording apparatus and disk recording method, when there is a vibration or impact during the recording operation, the laser irradiation is immediately stopped, so that, for example, even in the case of a write-once disk, You can avoid the situation where data is recorded in the wrong place and it can not be repaired,
Further, the recording operation is continuously resumed when the vibration and the impact are stopped, so that the recording operation can be properly completed.

Further, the disk recording apparatus of the present invention performs a predetermined process on input data to generate recording data for a disk recording medium, irradiates a laser beam during recording, and A recording head unit for recording data on a disk recording medium based on recording data supplied from a data processing unit; a detecting unit for detecting dirt or dust on the disk recording medium; and a detecting unit for detecting the detecting unit during a recording operation. A laser stopping means capable of forcibly stopping the laser beam irradiation of the recording head means, a storage means, a notifying means, and the recording of the recording data processing means based on the detection of the detecting means at the time of recording operation. Recording restart information required to interrupt data processing and restart recording, and current disc recording medium identification information Together are stored in the storage means, so that and a control unit that outputs the cleaning requirements of the disk recording medium by said notifying means. Further, when the disc recording medium is loaded after the notification request outputs the cleaning request, the control means interrupts the recording operation of the loaded disc recording medium using the identification information stored in the storage means. It is determined whether or not the disc recording medium is a disc recording medium, and if the disc recording medium has been interrupted, the recording operation is restarted based on the recording restart information.

In this case, the recording restart information includes at least position information on the disk as a position on the disk recording medium at which data recording is to be resumed continuously from the point where the recording operation was interrupted, and data at which the recording was interrupted. It is assumed that the information indicates. It is also assumed that the identification information is ID information written on the disk recording medium during the first recording operation on the disk recording medium. Further, the detection means is configured to monitor predetermined periodic information obtained from reflected light information of laser light applied to the disk recording medium during the recording operation, and to detect dirt or dust on the disk recording device. .

According to the disk recording method of the present invention, when dirt or dust on the disk recording medium is detected during data recording by irradiating the disk recording medium with laser light, To stop the laser beam irradiation, further, to suspend the recording data processing, to store the recording resumption information required when resuming recording, and the identification information of the current disk recording medium, during the suspension of the recording operation, Notifying the user of a request for cleaning the disk recording medium, and when the disk recording medium is loaded after the notification of the cleaning request, the disk drive in which the loaded disk recording medium has interrupted the recording operation using the identification information. It is determined whether or not the recording medium is a recording medium, and if it is determined that the recording medium is a disk recording medium in which the recording operation has been interrupted, the recording operation is performed based on the recording restart information. So as to be open.

According to the disk recording apparatus and the disk recording method, even if there is dirt or dust on the disk during the recording operation, the laser irradiation is immediately stopped.
For example, even in the case of a write-once disc, it is possible to avoid a situation where restoration is impossible. When the user cleans and removes dirt and dust, the suspended recording is continuously resumed, so that the recording operation can be properly completed.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to a disk drive apparatus compatible with CD-R and CD-RW. The description will be made in the following order. 1. 1. Configuration of disk drive device 2. Disk structure and ATIP 3. Subcode and TOC Processing at write error Various modifications

1. Configuration of Disk Drive Apparatus CD-R is a write-once medium using an organic dye for a recording layer, and CD-RW is a data rewritable medium using a phase change technique. CD-
FIG. 1 shows a configuration of a disk drive device of the present example capable of recording and reproducing data on a CD type disk such as R, CD-RW or the like.

The disk drive of the example shown in FIG. 1 is connected to a host computer 80 and is a so-called external drive of the computer. Part of the operation when a recording error occurs due to dirt or dust (for example, display of a message to a user, etc.) is realized by a cooperative operation with the host computer 80. Therefore, in this case, the “disk recording device” according to the present invention is realized as a system including the host computer 80 and the disk drive device. Of course, the “disk recording device” of the present invention can be realized by a single disk drive device, but this will be described later as a modification.

In FIG. 1, the disk 90 is a CD-R or CD-RW. In addition, CD-DA (CD-Digital A
udio), CD-ROM, etc.
It can be reproduced as.

The disk 90 is loaded on the turntable 7 and is driven by the spindle motor 6 at a constant linear velocity (CLV) or a constant angular velocity (CA) during a recording / reproducing operation.
V). Then, the optical pickup 1 reads out pit data (pits due to phase change pits or organic dye change (reflectance change)) on the disk 90. In the case of a CD-DA or a CD-ROM, the pits are embossed pits.

In the pickup 1, a laser diode 4 serving as a laser light source, a photodetector 5 for detecting reflected light, an objective lens 2 serving as an output end of the laser light,
An optical system (not shown) for irradiating the laser beam to the disk recording surface via the objective lens 2 and guiding the reflected light to the photodetector 5 is formed. A monitor detector 22 that receives a part of the output light from the laser diode 4
Is also provided.

The objective lens 2 is held by a biaxial mechanism 3 so as to be movable in a tracking direction and a focusing direction. The entire pickup 1 can be moved in the disk radial direction by a thread mechanism 8. The laser diode 4 in the pickup 1 is driven to emit laser light by a drive signal (drive current) from a laser driver 18.

The reflected light information from the disk 90 is detected by the photodetector 5, converted into an electric signal corresponding to the amount of received light, and supplied to the RF amplifier 9. Before and after recording data on the disk 90, during recording, and the like, the amount of reflected light from the disk 90 varies more greatly than in the case of a CD-ROM.
An AGC circuit is generally mounted on the RF amplifier 9 due to the fact that it is greatly different from a D-ROM and a CD-R.

The RF amplifier 9 includes a current-voltage conversion circuit, a matrix operation / amplification circuit, and the like corresponding to output currents from a plurality of light receiving elements as the photodetector 5, and generates necessary signals by matrix operation processing. For example, it generates an RF signal as reproduction data, a focus error signal FE for servo control, a tracking error signal TE, and the like. The reproduction RF signal output from the RF amplifier 9 is supplied to the binarization circuit 11 and the pit detection unit 24, and the focus error signal FE and the tracking error signal TE are supplied to the servo processor 14.

On the disk 90 as a CD-R or CD-RW, a groove (groove) serving as a guide for a recording track is formed in advance, and the groove has time information indicating an absolute address on the disk. The signal is wobbled (meandering) by the FM-modulated signal. Therefore, at the time of the recording operation, tracking servo can be applied from the information on the groove, and an absolute address (ATIP) can be obtained from the wobble information on the groove. The RF amplifier 9 extracts wobble information WOB by a matrix operation process and supplies the wobble information WOB to the groove decoder 23. The groove decoder 23 obtains absolute address information by demodulating the supplied wobble information WOB, and supplies the absolute address information to the system controller 10. A clock WCK synchronized with the wobbling of the groove can be obtained by injecting the groove information into the PLL circuit. The clock WCK is supplied to the encode / decode unit 12 as a clock for data encoding at the time of recording. Further, since the rotation speed information of the spindle motor 6 can be obtained from the clock WCK, by comparing the rotation speed information with the reference speed information, the spindle error signal SPE can be generated and output.

The reproduced RF signal obtained by the RF amplifier 9 is 2
The signal is binarized by the value conversion circuit 11 to be a so-called EFM signal (8-14 modulated signal), which is supplied to the encoding / decoding unit 12. The encoding / decoding unit 12 includes a functional part as a decoder during reproduction and a functional part as an encoder during recording. During reproduction, processing such as EFM demodulation, CIRC error correction, deinterleaving, and CD-ROM decoding are performed as decoding processing.
The reproduction data converted into the ROM format data is obtained. Further, the encoding / decoding unit 12 is provided with a disk 90
The sub-code extraction process is also performed on the data read from the sub-system, and the TOC and address information as the sub-code (Q data) are supplied to the system controller 10. Further, the encoding / decoding unit 12 generates a reproduction clock synchronized with the EFM signal by PLL processing,
The decoding process is executed based on the reproduced clock. The rotational speed information of the spindle motor 6 is obtained from the reproduced clock, and is compared with the reference speed information to generate a spindle error signal SPE. it can.

At the time of reproduction, the encoding / decoding unit 12
Accumulates the data decoded as described above in the buffer memory 20. As a reproduction output from the disk drive device, data buffered in the buffer memory 20 is read and transferred and output.

The interface unit 13 is connected to an external host computer 80,
The communication of recording data, reproduction data, various commands, and the like is performed with the communication device. Actually, SCSI, ATAPI interface, USB and the like are adopted. At the time of reproduction, the reproduced data decoded and stored in the buffer memory 20 is transferred and output to the host computer 80 via the interface unit 13. Note that a read command, a write command, and other signals from the host computer 80 are supplied to the system controller 10 via the interface unit 13.

In the case of the present embodiment, when the recording is interrupted due to an error during recording, a required message may be displayed to the user on a monitor display (not shown) of the host computer 80. At the time of suspension, the host computer 80 (the application running on the host computer 80) is notified of required information.

At the time of recording, recording data (audio data or CD-ROM data) is transmitted from the host computer 80.
Is transferred, and the recording data is sent from the interface unit 13 to the buffer memory 20 and is buffered. In this case, the encoding / decoding unit 12
As an encoding process of the buffered recording data, a process of encoding CD-ROM format data into CD format data (the supplied data is
In the case of D-ROM data), CIRC encoding and interleaving, subcode addition, EFM modulation, and the like are executed.

The EFM signal obtained by the encoding process in the encoding / decoding unit 12 is sent to the laser driver 18 as a laser drive pulse (write data WDATA) after a waveform adjustment process is performed in the write strategy 21. In the write strategy 21, recording compensation, that is, fine adjustment of the optimum recording power with respect to the characteristics of the recording layer, the spot shape of the laser beam, the recording linear velocity, and the like is performed.

In the laser driver 18, the write data WD
A laser drive pulse supplied as ATA is supplied to the laser diode 4 to perform laser emission driving. As a result, pits (phase change pits and dye change pits) corresponding to the EFM signal are formed on the disk 90.

APC circuit (Auto Power Control) 19
Is a circuit unit for controlling the output of the laser so as to be constant irrespective of the temperature while monitoring the laser output power by the output of the monitoring detector 22. The target value of the laser output is given from the system controller 10, and the laser driver 18 is controlled so that the laser output level becomes the target value.

From the focus error signal FE and tracking error signal TE from the RF amplifier 9 and the spindle error signal SPE from the encode / decode unit 12 or the address decoder 20, the servo processor 14 determines the focus, tracking, thread and spindle. Generate various servo drive signals and execute servo operation. That is, the two-axis driver 1 generates the focus drive signal FD and the tracking drive signal TD according to the focus error signal FE and the tracking error signal TE.
6 The two-axis driver 16 drives the focus coil and the tracking coil of the two-axis mechanism 3 in the pickup 1. As a result, a tracking servo loop and a focus servo loop are formed by the pickup 1, the RF amplifier 9, the servo processor 14, the two-axis driver 16, and the two-axis mechanism 3.

Further, in response to a track jump command from the system controller 10, the tracking servo loop is turned off and a jump drive signal is output to the biaxial driver 16 to execute a track jump operation.

The servo processor 14 further sends a spindle error signal S to the spindle motor driver 17.
A spindle drive signal generated according to the PE is supplied. The spindle motor driver 17 applies, for example, a three-phase drive signal to the spindle motor 6 in response to the spindle drive signal, and outputs the CLV rotation of the spindle motor 6 or CA.
Execute V rotation. In addition, the servo processor 14 generates a spindle drive signal in accordance with a spindle kick / brake control signal from the system controller 10, and causes the spindle motor driver 17 to execute operations such as starting, stopping, accelerating, and decelerating the spindle motor 6.

The servo processor 14 generates a thread drive signal based on, for example, a thread error signal obtained as a low-frequency component of the tracking error signal TE, an access execution control from the system controller 10, and supplies the thread drive signal to the thread driver 15. I do. The thread driver 15 drives the thread mechanism 8 according to a thread drive signal. Although not shown, the thread mechanism 8 includes
A mechanism including a main shaft for holding the pickup 1, a thread motor, a transmission gear, and the like is provided.
, The required sliding movement of the pickup 1 is performed.

Various operations of the servo system and the recording / reproducing system as described above are controlled by a system controller 10 formed by a microcomputer. The system controller 10 executes various processes according to a command from the host computer 80. For example, when a read command requesting transfer of certain data recorded on the disk 90 is supplied from the host computer 80,
First, seek operation control is performed for the designated address. That is, a command is issued to the servo processor 14 to execute the access operation of the pickup 1 targeting the address specified by the seek command. afterwards,
The operation control required to transfer the data in the designated data section to the host computer 80 is performed. That is, data reading / decoding / buffering from the disk 90 is performed, and the requested data is transferred.

When a write command (write command) is issued from the host computer 80, the system controller 10 first picks up the pickup 1 at the address to be written.
To move. Then, the encoding / decoding unit 12 causes the data transferred from the host computer 80 to perform the encoding process as described above.
FM signal. Then, as described above, the recording is executed by supplying the write data WDATA from the write strategy 21 to the laser driver 18.

The memory 24 in FIG.
M, a non-volatile memory unit, and the like are collectively shown, and are used as a work area for storing programs, various coefficients, and set values for processing executed by the system controller 10. Actually, ROM, S-RAM, DR
It is formed by various memory chips such as an AM and a flash memory, and performs a storage operation according to each characteristic. In addition, by a process at the time of a recording error described later, information necessary for restarting the recording operation, for example, an address of an interruption position (restart position) on the disk 90 or information indicating recording data where recording has been interrupted is, for example, a buffer. The data storage position on the memory 20 is stored. Further, the disk 90
In some cases, the disk ID uniquely assigned in the above is stored.

The interrupt signal generator 25 outputs an interrupt signal and a signal indicating the cause of the error to the system controller 10 when a recording error occurs. When an interrupt signal is detected during the recording operation, the system controller 10 interrupts the processing during the normal recording operation and executes the processing of FIGS. 13 and 14 described later.

The interrupt signal generator 25 generates an interrupt signal when vibration or impact is applied to the disk drive or when dirt or dust is detected on the disk 90 on which the data is recorded. is there.

In order to detect vibration or impact, the G sensor 26 may be, for example, an acceleration sensor or an angular velocity sensor.
A sensor that outputs a detection signal in response to vibration or shock is provided in the device. The interrupt signal generator 25 includes a G sensor 26
Generates an interrupt signal to the system controller 10 immediately when the detection signal dG is generated due to vibration or shock of a predetermined level or more. It also outputs information indicating that the interrupt signal is caused by vibration or shock.

The vibration or shock can also be detected by the tracking state of the laser spot. That is, when tracking of the laser beam is deviated due to vibration or impact, the detrack state appears as a change in the amplitude of the tracking error signal TE. Accordingly, the servo processor 14 monitors the amplitude of the tracking error signal TE, and if an unexpected detrack state (for example, a state where intentional non-track state is detected such as when a track jump is executed) is detected, this is detected. By assuming that the cause is vibration or shock, a detection operation of vibration or shock is performed by outputting a detection signal dT. Upon receiving the detection signal dT, the interrupt signal generator 25 outputs an interrupt signal to the system controller 10 immediately. It also outputs information indicating that the interrupt signal is caused by vibration or shock.

The dirt and dust on the disk 90
This has an effect such as a lack of a sync that should be obtained periodically in the IP information (a state in which an ATIP sync is not found in a detection window set with a predetermined periodicity). The encoding / decoding unit 12 monitors the deviation between the subcode sync and the ATIP sink for writing the subcode data during recording. Therefore, if the ATIP sink is lost due to dirt or dust, the encoding / decoding unit 12 12 can detect the situation. In this case, the encoding / decoding unit 12 outputs the detection signal dS on the assumption that an error has occurred due to dirt or dust. Upon receiving the detection signal dS, the interrupt signal generator 25 outputs an interrupt signal to the system controller 10 immediately.
It also outputs information indicating that the interrupt signal is caused by dirt or dust.

The above detection signals dG, dT, dS
Is also supplied to the laser stop circuit 27. The laser stop circuit 27 is a hardware circuit that forcibly stops the laser output from the laser driver 18 and detects the detection signal d.
When any one of G, dT, and dS is supplied, the laser output is immediately stopped. The stop of the laser output by the laser driver 18 is usually performed under the control of the system controller 10. However, the detection signals dG, dT, and dS are output when a recording error occurs in an emergency. Means that the laser output is stopped by the laser stop circuit 27 without going through the control processing of the system controller 10. That is, when a factor that hinders proper recording is found, the laser output is stopped immediately to prevent data from being written to an incorrect position, data loss, and the like.
For write-once media such as
Immediately before that improper recording on the top is performed and that part cannot be repaired.

The eject key 28 is an operation key for instructing the user to eject the disk 90 from the disk drive. The system controller 10 controls an ejection mechanism (not shown) in accordance with the operation of the ejection key 28 to execute ejection of the disc 90 (or disc tray).

2. Disc Structure and ATIP A CD disc, commonly referred to as a compact disc, has a single spiral recording track that starts at the center (inner circumference) of the disc and ends at the end (outer circumference) of the disc. In a disk on which data can be recorded on the user side, such as a CD-R / CD-RW, only grooves (guide grooves) for laser light guide are formed on a substrate as recording tracks before recording. By applying a laser beam modulated with high power to the light, a change in reflectivity or a change in phase of the recording film occurs, and data is recorded according to this principle. CD-DA, CD-R
In the case of a read-only disc such as an OM, there is no physical groove as a recording track.

In the CD-R, a recording film which can be recorded only once is formed. The recording film is an organic dye, and is a perforated recording using a high power laser. In a CD-RW in which a recording film that can be rewritten a large number of times is formed, the recording method is phase change recording, and data recording is performed as a difference between the reflectance in a crystalline state and the reflectance in an amorphous state. In terms of physical characteristics, the reflectivity of a read-only CD and a CD-R is 0.7 or more, while the CD-RW is about 0.2. -RW cannot be reproduced as it is. AG that amplifies weak signals
It is reproduced with the C (Auto Gain Control) function added.

In a CD-ROM, the lead-in area on the inner periphery of the disk is arranged over a range of a radius of 46 mm to 50 mm, and no pit exists on the inner periphery. CD-
As shown in FIG. 2, in the R and CD-RW, a PMA (Program Memory Area) and a PC
A (Power Calibration Area) is provided.

A lead-in area and a program area used for recording actual data following the lead-in area are a CD.
The data is recorded by a drive device corresponding to -R or CD-RW, and is used for reproducing recorded contents in the same manner as CD-DA and the like. PMA uses a recording signal mode for each track recording,
The start and end time information is temporarily recorded. After all the planned tracks are recorded, a TOC (Table of contents) is formed in the lead-in area based on this information. When a disc is recorded for the first time, a disc ID is written to the PMA by the disc drive device. The disk ID is an ID for identifying each disk. PCA is an area for trial writing in order to obtain the optimum value of the laser power at the time of recording.

In a CD-R or CD-RW, a groove (guide groove) forming a data track is formed to be wobbled (meandering) for controlling a recording position and a spindle rotation. The wobble is formed based on a signal modulated by information such as an absolute address, and thus includes information such as an absolute address. That is, wobble information such as an absolute address can be read from the groove. The absolute time (address) information expressed by such a wobbled groove is stored in the ATIP (Ab
solute Time In Pregroove). The wobbling groove is slightly sinusoidal as shown in FIG.
le), its center frequency is 22.05 kHz,
The meandering amount is about ± 0.03 μm.

In this wobbling, not only absolute time information but also various information is encoded by FM modulation. The wobble information expressed by the wobbling groove will be described below.

Regarding the wobble information detected by the push-pull channel from the groove of the CD-R / CD-RW, the spindle motor rotation is controlled so that the center frequency becomes 22.05 kHz when the disk is rotated at the standard speed. Then, it is rotated at the linear velocity (for example, 1.2 m / s to 1.4 m / s in the case of the standard density) exactly defined by the CD method. In the case of CD-DA and CD-ROM, the absolute time information encoded in the subcode Q may be used. However, this information cannot be obtained in a CD-R or CD-RW disc (blank disc) before recording. It relies on absolute time information contained in wobble information.

One sector (ATI) as wobble information
The P sector) coincides with one data sector (2352 bytes) of the main channel after recording, and writing is performed while synchronizing the ATIP sector and the data sector.

The ATIP information is not directly encoded into wobble information, but is once subjected to bi-phase (Bi-Phase) modulation and then to FM modulation as shown in FIG. This is because the wobble signal is also used for rotation control. In other words, 1 every predetermined period by bi-phase modulation
And 0 are exchanged, and the average number of 1 and 0 is set to 1: 1 so that the average frequency of the wobble signal at the time of FM modulation is set to 22.05 kHz. Incidentally, as wobble information, in addition to time information, recording laser power setting information and the like are also encoded as special information and the like. On a CD-RW disc, the special information is extended to encode power and recording pulse information for the CD-RW.

FIG. 7 shows the structure of one frame (ATIP frame) as wobble information. The ATIP frame is formed of 42 bits, and as shown in FIG. 7A, a sync (synchronization) pattern of 4 bits from the beginning and a discriminator (identifier) of 3 bits are provided.
The bits are the contents recorded as actual wobble information. For example, it is a physical frame address or the like. Then, a 14-bit CRC is added to the end of the frame. In addition,
As shown in FIG. 7B, 4
In some frames, bits are used and wobble information is 20 bits.

As shown in FIG. 5 or 6, the synchronization pattern added to the head of the frame is "111100010" when the preceding bit is "0" and "1" when the preceding bit is "1".
In this case, "00011101" is used.

The 3-bit or 4-bit discriminator is an identifier indicating the content of the subsequent 21-bit or 20-bit wobble information, and is variously defined as shown in FIG. Note that 2 of bits M23 to M0 in FIG.
The 4 bits correspond to 24 bits at bit positions 5 to 28 in FIG. Bits M23, M2
2, M21 (or bits M23, M22, M21, M
20) is the discriminator, and this value is "00".
0 ”, the wobble information of the frame (M20 to
The contents of M0) indicate the addresses of the program area and the lead-out area. When the discriminator is "100", the contents of the wobble information (M20 to M0) of the frame indicate the address of the lead-in area. These correspond to the above-mentioned absolute addresses as ATIP. The time axis information as ATIP is recorded in a simple increase from the beginning of the program area toward the outer periphery of the disk, and is used for address control during recording.

When the discriminator is "101", the wobble information (M20 to M0) of the frame is special information 1, and when the discriminator is "110", the wobble information of the frame is "110". When the information (M20 to M0) is the special information 2 and the discriminator is "111", the wobble information (M20 to M0) of the frame is the special information 3
Is shown. When 4 bits are used as the discriminator and "0010" is set, it indicates that the wobble information (M19 to M0) of the frame is the special information 4.

When the discriminator is "010", it indicates that the wobble information (M20 to M0) of the frame is additional information 1.
When the discriminator is “011”, it indicates that the wobble information (M20 to M0) of the frame is additional information 2. Also, 4 bits are used as a discriminator, and "0011"
, The wobble information (M19
To M0) are supplement information. When four bits are used as a discriminator and are set to "1000" or "1001", the wobble information (M19 to M0) of the frame is copyright information 1 for inserting a code used for copyright protection. , Copyright information 2 which are reserved.

For the special information, additional information, subordinate information, and copyright information,
Since it does not directly relate to the present invention, a detailed description is omitted.

3. Subcode and TOC Next, a description will be given of a subcode recorded together with main data on a CD-format disc and a TOC recorded in a lead-in area.

The minimum unit of data recorded on a CD disk is one frame. One block is composed of 98 frames. Fig. 9 shows the structure of one frame.
become that way. One frame is composed of 588 bits,
The first 24 bits are used as synchronization data, and the following 14 bits are used as a subcode data area. After that, data and parity are allocated.

One frame is composed of 98 frames, and the subcode data extracted from the 98 frames are collected to form one block as shown in FIG.
The sub-code data (sub-coding frame) of the block is formed. First and second frames at the beginning of 98 frames (frame 98n + 1, frame 98n + 2)
Is a synchronization pattern.
Then, from the third frame to the 98th frame (frame 9
8n + 3 to frame 98n + 98), each of which has 96 bits of channel data, that is, P, Q, R, S, T, U,
V and W subcode data are formed.

Of these, P for managing access, etc.
Channel and Q channel are used. However, the P channel only shows a pause portion between tracks, and the finer control is performed on the Q channel (Q1 to Q1).
Q96). The 96-bit Q channel data is configured as shown in FIG.

First, the four bits Q1 to Q4 are used as control data, and are used for discrimination of the number of audio channels, emphasis, CD-ROM, and whether or not digital copying is possible.

Next, the four bits Q5 to Q8 are ADR, which indicates the mode of the sub-Q data. Specifically, the mode (sub-Q data content) is expressed by the ADR 4 bits as follows. 0000: Mode 0: Basically, all sub-Q data is all zero (used in CD-RW) 0001: Mode 1: Normal mode 0010: Mode 2: Indicates the catalog number of the disc 0011: Mode 3 ..ISRC (International St
0100: Mode 4: Used for CD-V 0101: Mode 5: CD-R, CD-RW, CD
-Used in multi-session system such as EXTRA

The 72 bits Q9 to Q80 following the ADR are used as sub-Q data, and the remaining Q81 to Q96 are CR bits.
C.

The address is expressed by the sub-Q data when the mode 1 is indicated by the ADR. ADR = sub Q data and TOC in mode 1
The structure will be described with reference to FIGS. In the lead-in area of the disc, the sub-Q data recorded therein becomes the TOC information. That is, Q9 to Q8 in the Q channel data read from the lead-in area.
The 72-bit sub Q data of 0 has information as shown in FIG. FIG. 11 (a)
Shows the structure of FIG. 10B in the lead-in area as 7
This shows details of a 2-bit sub-Q data portion. The sub-Q data has data of 8 bits each,
Expresses TOC information.

First, a track number (TNO) is recorded by eight bits Q9 to Q16. In the lead-in area, the track number is fixed to “00”. Then Q17 ~
POINT (point) is described by 8 bits of Q24. Q25-Q32, Q33-Q40, Q41-Q48
MIN (minutes), SEC (seconds), FRAME (frame) as the elapsed time in the lead-in area
Is shown. Q49 to Q56 are set to “00000000”. Furthermore, Q57 to Q64, Q65 to Q72, Q
PMIN, PSEC, P
FRAME is recorded, but this PMIN, PSEC,
The meaning of PFRAME is determined by the value of POINT.

When the value of POINT is "01" to "99", the value of POINT means a track number,
In this case, in PMIN, PSEC, and PFRAME, the start point (absolute time address) of the track of the track number is minute (PMIN), second (PSE).
C), frame (PFRAME).

When the value of POINT is "A0", PM
The track number of the first track is recorded in IN.
Further, specifications such as CD-DA (digital audio), CD-I, and CD-ROM (XA specification) are distinguished by the value of PSEC. When the value of POINT is “A1”, the track number of the last track is recorded in PMIN. When the value of POINT is “A2”, the PMI
The start point of the lead-out area is the absolute time address (minute (PMIN), N, PSEC, PFRAME).
Seconds (PSEC), frames (PFRAME)).

For example, in the case of a disc on which six tracks are recorded, data is recorded as TOC based on such sub-Q data as shown in FIG. TO
C, the track numbers TNO are all "00" as shown. Block NO. Indicates the number of one unit of sub-Q data read as 98-frame block data (sub-coding frame) as described above. Each TOC data has the same contents written over three blocks. As shown, when POINT is "01" to "06", PMIN,
Tracks # 1 to # 6 as PSEC and PFRAME
The start point of track # 6 is shown.

When POINT is "A0", PM
“01” is shown as the first track number in IN. The disc is identified by the value of PSEC, and is "00" in the case of a normal audio CD. If the disc is a CD-ROM (XA specification), P
SEC = “20”.

When the value of POINT is "A1", P
The track number of the last track is recorded in MIN,
When the value of POINT is “A2”, PMIN, PSE
C, PFRAME indicate the start point of the lead-out area. After block n + 27, block n
.. N + 26 are repeatedly recorded.

In the program area and the lead-out area where music and the like are recorded as tracks # 1 to #n, the sub-Q data recorded therein has the information shown in FIG. FIG. 11B shows the program area and the lead-out area in FIG.
FIG. 7B shows the structure of the sub-Q data of 72 bits in detail.

In this case, first, a track number (TNO) is recorded by eight bits Q9 to Q16. That is, for each of the tracks # 1 to #n, the value is any one of "01" to "99". In the lead-out area, the track number is "AA". Subsequently, an index is recorded in 8 bits Q17 to Q24. The index is information that can further subdivide each track.

Q25 to Q32, Q33 to Q40, Q41
Each of the 8 bits from Q48 to Q48 indicates MIN (minute), SEC (second), FRA as the elapsed time (relative address) in the track.
The ME (frame) is shown. Q49-Q56 is "00
000000 ”. Q57-Q64, Q65-Q
8 bits of 72, Q73-Q80 are AMIN, ASE
C, AFRAME, which are minute (AMIN), second (ASEC), and frame (AF) as absolute addresses.
RAME). The absolute address is an address continuously added from the head of the first track (that is, the head of the program area) to the lead-out area.

By the way, in the case of CD-R and CD-RW, in the above-mentioned PMA, various kinds of information are written as subcodes. In the PMA, the subcode Q data is set as shown in FIG. 11A as in the lead-in area. The information content of the subcode Q data is defined according to the mode indicated by ADR.

As described above, the PMA temporarily records the recording signal mode, start and end time information every time a track is recorded.
Is recorded as sub-Q data. That is, ADR =
In the case of mode 1, the track number of the recorded track is indicated as the value of POINT. Also,
PMIN, PSEC, and PFRAME indicate the start position of the track of the track number, and MIN, SEC,
The end position is indicated by FRAME.

When ADR = mode 2, disc ID information is recorded. This is information that is recorded only once on the disc. In this case, MIN, SE
For each of C and FRAME, BC
The D code value (two digit value) is recorded. Then, the six-digit value based on these is used as the disk ID. In this case, P
The SEC indicates the session information of the disc. POINT, PMIN and PFRAME are not used.

4. Processing at the time of writing error The following describes the operation at the time of occurrence of a recording error due to vibration, shock, dirt, and dust, which is a characteristic operation of the present embodiment.
13 and 14 showing the processing of the system controller 10.
This will be described with reference to FIG.

As described above, the system controller 1
0 controls recording of the data supplied from the host computer 80 on the disk 90 in response to a write command from the host computer 80. During this recording operation, when vibration or shock, or dirt or dust on the disk 90 is detected and an interrupt signal is supplied from the interrupt signal generating unit 25, the system controller 10 starts operating as shown in FIG.
3 is started. As described above, when vibration or impact, or dirt or dust on the disk 90 is detected, the laser output from the pickup 1 is immediately stopped by the laser stop circuit 27. Is suspended when the system controller 10 starts the processing of FIG.

In the process of FIG. 13, the system controller 10 interrupts the encoding of the recording data by the encoding / decoding unit 12 and the transfer to the write strategy 21 in step F101. And step F
At 102, predetermined information is stored in the memory 24 so that the data which has been temporarily interrupted this time among the data supplied from the host computer 80 and temporarily stored in the buffer memory 20 can be recognized when recording is resumed. For example, the storage address of the leading data at the time of recording restart on the buffer memory 20 may be stored. Next, in step F103, the address on the disk 90 at the time of this interruption is stored in the memory 24. For example, the absolute address value obtained immediately before the interruption may be stored as ATIP information.

Next, the system controller 10 branches the processing in step F104 depending on the cause of the recording error. The recording error, that is, the cause of the generation of the interrupt signal from the interrupt signal generating unit 25 is caused by the detection signal dG or dT, that is, the cause of vibration or shock, and the detection signal dS, that is, the case of dirt or dust. Information indicating the cause of the occurrence of the interrupt signal is supplied from the interrupt signal generator 25 together with the interrupt signal.

If the cause of the error is vibration or shock, the system controller 10 proceeds to step F10.
In step 5, the host computer 80 is notified that the recording operation has been interrupted by vibration or impact. At this time, in response to the notification, the host computer 80 displays a message on the monitor display that the recording operation has been interrupted by vibration or impact to notify the user.

While recording is suspended, the system controller 10
Monitors the state of vibration or impact at regular intervals. First, in step F106, the counter CTg is incremented. The counter CTg has been reset to CTg = 0 at the time when recording on the disk 90 is started, and therefore, in step F106, CTg = 1 is first set. Then, the process stands by for a predetermined time in step F107.
The fixed time may be set to a time suitable for design, for example, about 1 to several seconds, or several tens seconds or more.

After a lapse of a predetermined time, the processing is advanced to step F1.
In step 08, it is determined whether or not an interrupt signal from the interrupt signal generator 25 is being supplied. In this case, the case where the interrupt signal is supplied is a case where the vibration or the shock is applied to the disk drive device even after the lapse of a certain time. At this point, since the recording operation has been interrupted, no interrupt signal due to dirt or dust is supplied. If the interrupt signal has been supplied, the process proceeds to step F111, where the value of the counter CTg is compared with a predetermined upper limit Lg. If the upper limit Lg has not been reached, the process returns to step F106. Then, the value of the counter CTg is incremented, and after waiting for a certain period of time in step F107, the presence or absence of an interrupt signal is confirmed in step F108.

If the interrupt signal is not confirmed at a certain point in time at step F108, it can be determined that the vibration or shock has subsided. Therefore, the system controller 10 advances the process to step F109, clears the value of the counter CTg, and restarts the data recording operation from step F110. That is, control such as restarting the operation of the encoding system and restarting the laser output is performed. This recording restart is performed based on the information stored in steps F102 and F103. In other words, the data following the stop of the recording is written on the disk 90 immediately after the address of the stop of the recording. As a result, data recording is continuously performed physically and logically, that is, data recording is performed in the same state as when there is no interruption. If the interrupt signal is supplied again after the recording is restarted, the process returns to step F10.
Processing from step 1 is performed.

It should be noted that even if the process of confirming the interrupt signal is repeated several times in step F107 after waiting for a certain period of time in step F107, it may be determined that the vibration or shock still does not stop. In that case, at a certain point in time, it is detected in step F111 that the value of the counter CTg has reached the upper limit Lg, and in that case, an error is terminated. In other words, the limit time for waiting for the vibration or shock to settle down is set by the fixed time for standby and the value of the upper limit Lg. If the vibration or shock does not stop after the limit time, recording cannot be resumed. And terminates with an error.

If it is determined in step F104 that the cause of the error is dirt or dust, the process of the system controller 10 proceeds to step F112 in FIG. First, it is determined whether or not the counter CTd1 has exceeded a predetermined upper limit Ld1. The counter CTd1 counts the number of times recording was interrupted due to dirt or dust during the current recording operation, and is a counter that has been reset to zero when the current recording operation is first started. is there.

If the counter CTd1 does not exceed the upper limit Ld1, the value of the counter CTd1 is incremented in step F113. That is, the count is incremented in response to the occurrence of the current interruption. Next, in step F114, the system controller 10 stores the disk ID of the disk 90 in the memory 24. This is the disk ID stored in the PMA as described above. Note that the disk ID is not necessarily limited to information stored in the PMA, and may be replaced with information unique to the disk, if any.

Next, in step F115, the host computer 80 is notified that the recording operation has been interrupted by the influence of dirt or dust. At this time, the host computer 80 displays a message indicating that the recording operation has been interrupted by dirt or dust on the monitor display in response to the notification, and notifies the user. Further, at this time, the host computer 80 also displays a message to the user requesting that the disk 90 be removed and cleaned.

Thereafter, the system controller 10 waits for the user to operate the eject key 28 in step F116. At this time, the system controller 10
The time count from the start of the standby is performed, and it is determined whether or not a timeout has occurred in step F117. The timeout time may be set to a suitable time, but various types of time, for example, about 5 minutes, about 10 minutes, about 1 hour, about several hours, etc. Further, the user may be allowed to select or set the timeout time.

The user must clean the disk 90 in response to the message displayed on the host computer 80 side. However, when the user leaves the seat or neglects the operation, a timeout occurs. There is. In this case, since the disk drive device does not eliminate the adhesion of dirt and dust, it is determined that recording cannot be resumed and an error ends.

When the user operates the eject key 28 to remove the disk 90 for cleaning or the like, the system controller 10 performs control to execute a disk ejection operation in step F118. And step F1
At 19, it waits for the disk 90 to be loaded.

When the disc 90 is loaded, step F
At 120, the system controller 10 first causes the pickup 1 to access the PMA of the disk 90 and read the disk ID. In step F121, the read disk ID is stored in the memory 2 in step F114.
Then, it is compared with the disk ID stored in No. 4 to determine whether they match. If the disc IDs do not match, it means that the user has loaded a disc 90 other than the disc 90 on which recording has been suspended. In that case, step F1
Proceeding to 24, the host computer 80 is notified that a different disk has been loaded. In response to this notification, the host computer 80 displays a message requesting that a different disc be loaded and that the disc whose recording has been interrupted be reinserted.

In this case, the system controller 10 determines whether or not the counter CTd2 has reached a predetermined upper limit Ld2 in step F125. If not, the system controller 10 increments the value of the counter DTd2 in step F126. It returns to F116. Counter DTd
Numeral 2 is reset to zero when recording is started and resumed (step F122), and indicates the number of times a user has loaded a different disk when recording was interrupted. In step F116, the operation of the eject key 28 is waited until the timeout occurs as described above, and when the disc is ejected and reloaded, step F is executed again.
At 120 and F121, the discrimination of the disc ID is performed.

If the user has loaded a different disc many times, at some point the counter D
The value of Td2 reaches the upper limit Ld2. In this case, it is determined that the user has no intention to restart recording, and the process ends with an error.

If the user removes the disc 90 in response to the message displayed at the time of step F115, wipes off dirt, and reloads the disc 90, it is determined in step F121 that the disc is the same disc. In that case, the system controller 10 determines that the cause of the error has been resolved, and
The counter DTd2 is cleared at 2 and data recording is restarted at step F123. That is, control such as restarting the operation of the encoding system and restarting the laser output is performed. This recording restart,
This is performed based on the information stored in steps F102 and F103. In other words, the data following the stop of the recording is written on the disk 90 immediately after the address of the stop of the recording. As a result, data recording is continuously performed physically and logically, that is, data recording is performed in the same state as when there is no interruption. After the recording is resumed, if the interrupt signal is supplied again, the processing from step F101 is performed again.

If the recording is interrupted due to dirt or dust and the recording is resumed after cleaning several times, it may be determined at a certain point in time that the counter CTd1 exceeds the upper limit Ld1 at step F112. In this case, there is a high possibility that the disc 90 has dirt or dust that cannot be removed even if the user cleans the disc 90, so that further recording restart is useless and the error is terminated.

The processing at the time of occurrence of a recording error according to the present embodiment has been described above. By performing such processing, even when a recording error occurs due to vibration, impact, dirt, dust, etc. If they can be recovered, that is, if the vibration or shock subsides or the dirt or dust is removed, continuous recording restart from the suspended state, both physically and logically on the disk, can be performed. Thus, a series of data recording similar to the case where there is no interruption can be executed. Further, when vibration, impact, dirt, and dust are detected, the laser output is immediately stopped, so that even in the case of a CD-R, data is not recorded in an erroneous area and the data cannot be repaired. . Therefore, even when there is vibration, impact, dirt, dust, or the like, appropriate data recording becomes possible, and the reliability and convenience of the apparatus are improved, and the disc is prevented from being wasted.

5. Various Modifications As described above, the configuration and the operation example as the embodiment have been described, but the present invention is not limited to the above example,
Various modifications are possible. Hereinafter, possible modifications will be described.

First, the following examples can be considered as modified examples of the processing shown in FIGS. In the case where the recording is interrupted due to dirt or dust and the user is requested to be cleaned, the user has to wait for the eject operation in steps F116 and F117 in FIG. 14. In this case, the system controller 10 does not wait for the user operation. May be automatically performed. This will also require more cleaning from the user.
Alternatively, when waiting for an eject operation in step F116 in FIG. 14, without setting a timeout in particular,
You may wait for a user operation.

If it is determined in step F121 that the user has loaded the disc 90 that the discs are not the same disc, it is determined whether the user has no intention to wash and resume recording, or has simply made a mistake in the disc. do not know. Therefore, a message may be displayed to the user, asking whether to reinsert the disc whose recording has been interrupted or to abandon the resumption of recording, and to perform a process in response to the user's operation in response thereto.

At step F112 in FIG. 14, it is determined whether or not the counter CTd1 has exceeded the upper limit Ld1. If the counter CTd1 has exceeded the upper limit Ld, an error is terminated. May occur and recording may be interrupted many times, or it may be repeated that a recording error occurs again at the time of resuming without being able to remove dirt or dust at a certain place by washing by the user. . For example, if it is desired to end the error here only when the dirt or the like cannot be removed by washing, the counter CTd1 may be incremented only when a recording error occurs at the same location. In other words, store the address of the error location on the disk,
Next, when an error due to dirt or dust occurs, the addresses are compared, and if the addresses are the same, the counter CTd1 may be incremented.

The error termination from step F117 or step F125 in FIG. 14 means that the user does not perform the cleaning operation or loads another disk. After the data for restart and the disk ID are stored, recording or reproduction processing is performed on another loaded disk, and it is detected at a later point in time that the disk whose recording has been interrupted has been loaded. Then, the recording may be restarted from the interrupted point. In this case, for the recorded data,
For example, a recording medium on the host computer 80 side, for example, H
The data may be saved in a DD (hard disk drive) and the data from the interrupted point may be supplied again at the time of resumption.

In the processing shown in FIGS. 13 and 14, it is assumed that the resuming is waited in a state where the data for resuming is stored in the buffer memory 20. If the data is stream data such as video data or video data, a situation may occur in which the data cannot be stored in the buffer memory 20 until the restart. Therefore, in such a case, the host computer 8
It is also conceivable to store the data recording restart point on the 0 side, or store the data itself from the recording restart point.

In the above example, the system configuration using the host computer 80 and the disk drive device has been described as an example. However, a configuration in which the disk drive device alone is used for an application such as an audio recorder can be considered. FIG. 15 shows a configuration example of a disk drive device as an audio data recorder. The same parts as those in FIG. 1 are denoted by the same reference numerals and description thereof will be omitted.
, An audio data input / output system is provided. That is, an input terminal Din, an output terminal Dout, and a digital data interface 31 for inputting and outputting audio data in the form of digital data.
Is provided. In order to input an analog audio signal, an input terminal Ain, an analog input processing circuit 32,
An A / D converter 33 is provided. Further, a D / A converter 34, an output processing circuit 35, and an output terminal Aout are provided for outputting an analog audio signal.

At the time of recording, audio data supplied from an external device to the input terminal Din in the form of digital data is input-processed by the digital data interface 31, and is encoded / decoded by the encoder / decoder 12 (buffer memory 2).
0) to be recorded. When an analog audio signal is supplied from an external device to the input terminal Ain, the analog audio signal is supplied to the input processing circuit 3.
In 2, analog signal processing such as gain adjustment and filtering is performed, converted into digital audio data by the A / D converter 33, transferred to the encoding / decoding unit 12 (buffer memory 20), and subjected to recording processing.

At the time of reproduction from the disc 90, digital audio data obtained by the decoding processing in the encoding / decoding unit 12 is subjected to transmission format processing to an external device by the digital data interface 31, and
The data is output from the output terminal Dout as reproduction data. Alternatively, the digital audio data obtained by the decoding processing in the encoding / decoding unit 12 is converted into an analog audio signal by the D / A converter 34, and the output processing circuit 35 performs gain adjustment and other analog processing to output the analog audio signal. The signal is output from a terminal Aout as a reproduction signal.

In the case of such a single device, an operation unit 29 provided with various operation keys and a display unit 30 for displaying a message, a recording / reproducing operation state, and the like are provided as a user interface.

The processing shown in FIGS. 13 and 14 can be similarly executed in such a disk drive device. 13 and 14, the message display and the like on the host computer 80 are performed by the system controller 10.
Is performed by the display unit 30 based on the control of the above.

Although the modified examples have been described above, various other modified examples are of course conceivable. For example, the present invention can be applied to other types of disk drive devices, disk ATIP structures, subcode structures, and the like. CD-R, CD-RW as a recording medium
Although a disk is taken as an example, the present invention relates to a DVD-RAM,
A recording device for other types of data recordable disc media such as VD-R, DVD-RW, DVD + RW,
It is also applicable as a recording method.

[0116]

As will be understood from the above description, according to the present invention, when there is a vibration or an impact during the recording operation, the laser irradiation is immediately stopped. Also, it is possible to avoid a situation in which data recording is performed in an incorrect place and the data cannot be repaired, and the recording is continuously resumed when the vibration and the impact are stopped, so that the recording operation can be appropriately completed. Also, if there is dirt or dust on the disc during the recording operation, the laser irradiation is immediately stopped, so that even if it is a write-once disc, for example, it is possible to prevent the situation from being unrecoverable. it can. When the user cleans and removes dirt and dust, the suspended recording is continuously resumed, so that the recording operation can be properly completed. From these facts, as a disk recording device and a disk recording method corresponding to a recordable disk recording medium, it is possible to appropriately cope with a recording operation error due to vibration, impact, dirt, dust, etc., and improve user convenience. it can. Further, even in the case of a write-once disk, there is an effect that a situation where the disk is wasted can be avoided. Particularly, the laser stop means immediately stops laser irradiation without waiting for the laser stop control of the control means, so that error writing is not performed, which is particularly suitable for a write-once disc.

The recording restart information includes at least position information on the disk as a position at which data recording is resumed continuously from the position where the recording operation was interrupted on the disk recording medium, and information indicating the data whose recording was interrupted. When recording is resumed, appropriate recording, that is, continuous recording from the state before the interruption is possible.

When the recording operation is interrupted due to vibration or shock, the state of detection of vibration or shock is checked at regular intervals, and if the vibration or shock has disappeared, the recording operation is restarted. Operation can be resumed.

When the recording operation is interrupted by dirt or dust, the user can request the user to wash the disk recording medium, so that the dirt or dust can be removed and the disc can be used. In this case, the user reloads the disc into the disc recording device after the cleaning. At this time, the identification information indicates whether the loaded disc recording medium is the disc recording medium whose recording operation has been interrupted. By judging whether or not the recording can be properly resumed. In other words, if the user loads a disc by mistake or loads another disc without the intention to resume recording, the suspended recording operation will not be resumed, and recording will be resumed improperly. In addition, it is possible to point out to the user in case of mere misplacement of the user.

[Brief description of the drawings]

FIG. 1 is a block diagram of a disk drive device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a disk layout.

FIG. 3 is an explanatory diagram of a wobbling groove.

FIG. 4 is an explanatory diagram of ATIP encoding.

FIG. 5 is an explanatory diagram of an ATIP sync waveform.

FIG. 6 is an explanatory diagram of an ATIP sync waveform.

FIG. 7 is an explanatory diagram of an ATIP frame.

FIG. 8 is an explanatory diagram of the contents of an ATIP frame.

FIG. 9 is an explanatory diagram of a frame structure of a CD system.

FIG. 10 is an explanatory diagram of a sub-coding frame of the CD system.

FIG. 11 is an explanatory diagram of sub-Q data of the CD system.

FIG. 12 is an explanatory diagram of a TOC structure of a CD system.

FIG. 13 is a flowchart of a process when a write error occurs according to the embodiment;

FIG. 14 is a flowchart of a process when a write error occurs according to the embodiment;

FIG. 15 is a block diagram of another disk drive device according to the embodiment.

[Explanation of symbols]

1 pickup, 2 objective lens, 3 biaxial mechanism, 6
Spindle motor, 10 system controller, 1
2 Encoding / decoding unit, 14 servo processor, 23 groove decoder, 24 memory, 25 interrupt signal generation unit, 26 G sensor, 27 laser stop circuit, 28 eject key, 29 operation unit, 30 display unit, 80 host computer, 90 disk

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hirokuni Hashimoto 6-7-35 Kita-Shinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation (72) Inventor Osamu Udagawa 6-35-35 Kita-Shinagawa, Shinagawa-ku, Tokyo Sony Corporation F term (reference) 5D090 AA01 BB03 BB04 CC01 DD03 EE01 FF36 HH01 HH02 JJ09 JJ16 KK20

Claims (18)

[Claims] 1. A recording data processing means for performing predetermined processing on input data to generate recording data for a disk recording medium, irradiating a laser beam during recording, and supplying the recording data from the recording data processing means. Recording head means for recording data on a disk recording medium based on recording data; detecting means for detecting vibration or shock; and forcibly irradiating the recording head means with a laser beam based on detection of the detecting means during a recording operation. A laser stopping means capable of temporarily stopping, a storage means, and a recording data processing means for interrupting the recording data processing of the recording data processing means based on the detection of the detecting means at the time of the recording operation and resuming the recording necessary for resuming the recording. The information is stored in the storage unit, and the recording is performed according to the detection state of the vibration or the impact by the detection unit. Based on the open information, the disk recording apparatus characterized by and a control means for resuming the recording operation. 2. The recording restart information includes, at least, position information on the disk as a position where data recording is restarted continuously from a position where the recording operation is interrupted on the disk recording medium; 2. The disk recording apparatus according to claim 1, wherein the information is information to be indicated. 3. The control means checks the state of detection of vibration or shock by the detection means at regular time intervals when the recording operation is interrupted, and resumes the recording when the vibration or shock has disappeared. 2. The disk recording apparatus according to claim 1, wherein the recording operation is restarted based on the information. 4. The disk recording apparatus according to claim 1, wherein said detection means is a sensor that outputs a detection signal by vibration or impact applied to the disk recording apparatus. 5. The apparatus according to claim 1, wherein the detecting means detects a vibration or an impact applied to the disk recording device from tracking information obtained from reflected light information of a laser beam applied to the disk recording medium during a recording operation. 2. The disk recording apparatus according to claim 1, wherein: 6. A recording data processing means for performing predetermined processing on input data to generate recording data for a disk recording medium, irradiating a laser beam at the time of recording, and being supplied from the recording data processing means. Recording head means for recording data on a disk recording medium based on recording data; detecting means for detecting dirt or dust on the disk recording medium; and A laser stopping unit capable of forcibly stopping laser beam irradiation, a storage unit, a notifying unit, and a recording data processing unit that suspends recording data processing of the recording data processing unit based on detection of the detection unit during recording operation. When the recording restart information and the current disc recording medium identification information necessary for restarting the And a control unit for outputting a request for cleaning the disk recording medium by the notification unit. 7. The recording restart information includes at least position information on the disk as a position at which data recording is resumed continuously from a position where the recording operation is interrupted on the disk recording medium; 7. The disk recording apparatus according to claim 6, wherein the information is information to be indicated. 8. The disk recording apparatus according to claim 6, wherein the identification information is ID information written on the disk recording medium during a first recording operation on the disk recording medium. 9. The control means, when a disc recording medium is loaded after the output of the cleaning request by the notifying means, uses the identification information stored in the storage means to discard the loaded disc recording medium. 7. The recording operation according to claim 6, wherein it is determined whether or not the recording operation has been interrupted, and if the recording operation has been interrupted, the recording operation is restarted based on the recording restart information. A disk recording device according to claim 1. 10. The detecting means monitors predetermined periodic information obtained from reflected light information of a laser beam applied to a disk recording medium during a recording operation to detect dirt or dust on the disk recording device. 7. The disk recording device according to claim 6, wherein: 11. When a vibration or an impact is detected during data recording by irradiating a laser beam onto a disk recording medium, the laser beam irradiation is immediately stopped. The data processing was interrupted and the recording restart information necessary for resuming recording was stored.While the recording operation was interrupted, the detection status of vibration or shock was checked at regular intervals, and the vibration or shock disappeared. In case,
A disc recording method, wherein a recording operation is restarted based on the recording restart information. 12. The recording restart information includes at least position information on the disk as a position where data recording is restarted continuously from a position where the recording operation is interrupted on the disk recording medium, and data at which the recording is interrupted. 12. The disc recording method according to claim 11, wherein the information is information indicating the disc. 13. The disk recording method according to claim 11, wherein the vibration or the impact is detected by a sensor that outputs a detection signal according to the vibration or the impact applied to the disk recording device. 14. The disk recording method according to claim 11, wherein the vibration or the shock is detected from tracking information obtained from reflected light information of a laser beam applied to a disk recording medium during a recording operation. . 15. When a dirt or dust on a disk recording medium is detected during data recording by irradiating the disk recording medium with laser light, the laser light irradiation is immediately stopped. Further, the recording data processing is interrupted, and the recording restart information necessary for resuming the recording and the identification information of the current disk recording medium are stored. When a media cleaning request is notified, and a disk recording medium is loaded after the notification of the cleaning request, whether the loaded disk recording medium is a disk recording medium whose recording operation has been interrupted is determined by using the identification information. Discriminating whether the disc is a disk recording medium in which the recording operation has been interrupted by the discrimination, and restarting the recording operation based on the recording restart information. Disk recording method that. 16. The recording restart information includes at least position information on the disk as a position on the disk recording medium at which data recording is to be resumed continuously from the point at which the recording operation was interrupted, and data at which recording was interrupted. 16. The disc recording method according to claim 15, wherein the information is information indicating the disc. 17. The disk recording method according to claim 15, wherein the identification information is ID information written on the disk recording medium during the first recording operation on the disk recording medium. 18. Dirt or dust on a disk recording device is detected by monitoring predetermined periodic information obtained from reflected light information of a laser beam applied to a disk recording medium during a recording operation. The disk recording method according to claim 15, wherein