JP2000331411A - Optical disk recording device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] In an optical disc recording apparatus in which discs having different recording characteristics may be loaded, it is determined whether or not the loaded disc is a recordable disc. Provided is an optical disk recording device that improves usability by notifying a user that recording cannot be performed without performing the operation. SOLUTION: Prior to recording information on a disk, a detecting means for detecting parameter information relating to recording recorded in advance on the disk, and determining whether a parameter value of the detected parameter information is within a predetermined range. Display means for not performing recording of information when the determination result of the determination means is not within the predetermined range, and indicating that recording is not performed based on the detected parameter value. Control signal generating means for generating a control signal for performing the control.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk recording apparatus for optically recording information using an optical disk having a recording film, and more particularly to a possibility that optical disks having the same shape and different recording characteristics can be mounted. The present invention relates to an optical disk recording device.

[0002]

2. Description of the Related Art In recent years, DVDs (Digital Video Disks) have become widespread as large-capacity optical disk media having the same outer shape as a CD (Compact Disk) and having a recording capacity about seven times that of a CD. This DVD has started from a read-only disc, and at present, a disc called a recordable DVD-RAM or DVD-R and a drive device thereof have appeared in order to meet a wide range of user needs. DVD-RAMs can be freely recorded and reproduced, but are incompatible with read-only DVDs because the physical format of the disc is significantly different. On the other hand, DVD-R is a write-once recording medium, but after recording is completed, compatibility with a read-only DVD can be ensured, and reproduction with a DVD player or DVD-ROM drive can be easily realized.

[0003] For example, the recording technology relating to the DVD-R is described in, for example, "Development of a DVD-R additional recording system; Yoshida et al."
l.21, No.68, PP.7-12 CE'97-10) and IEICE technical report "Development of DVD-R System LSI; Nakamura et al." (TECNICAL REPORT OF IEICE CMP98-111 PP .37-4
Proposed in 2). The most characteristic item of the DVD-R is that the recorded disk can be reproduced by a conventional reproduction-only device. For this purpose, the DVD-R disc is formed and recorded in advance in the form of pits called land pre-pits (hereinafter referred to as LPPs) on the disc, in which address information of the disc and parameter information relating to recording are recorded.

[0004] FIG. 2 shows the disk specifications of the DVD-R system proposed above, and the DVD-R disk format will be briefly described with reference to FIG. 3.

FIG. 3 is a schematic illustration of the recording surface of a DVD-R disc. In the DVD-R, the recording characteristics depend on the linear velocity of the disk. Therefore, the spindle motor for rotating the disk needs to rotate at a constant linear velocity control. Therefore, in the DVD-R disc, the track is divided into a land portion and a groove portion so that the linear speed can be detected even in a non-recording state, and a wobble is provided at a boundary between the land portion and the groove portion, so that a linear velocity is obtained. (Hereinafter, this signal is referred to as a wobble signal).

In FIG. 3, a hatched portion is a land portion, and a blank portion is a groove portion, in which information is recorded. The wobble at the boundary between the land and the groove is detected as a wobble signal by, for example, a push-pull optical detection circuit. The laser beam spot is relatively scanned in the direction of the arrow in the figure. Since the DVD-R needs to have the same disk format as the read-only DVD when recording is completed, the land portion has sector number information indicating the absolute position on the disk formed as an LPP. Have been. This is because, when recording, it is necessary to determine the sector number of the recording position from the LPP signal and record the sector number information as redundant data of the recording information as in the case of the read-only DVD.

[0007]

The above-described DVD
For an optical disc such as -R, the wavelength of the laser beam is an important factor. In general, the shorter the wavelength, the more suitable for high recording density. However, from the viewpoint of manufacturing a laser oscillator, the shorter the wavelength, the more technical problems and the higher the manufacturing cost. This is especially true in a laser oscillator having a large power used for recording. As for the wavelength of the laser beam, the DVD-R system proposed above is constructed on the premise that the laser beam wavelength at the time of recording is about 630 to 640 nm, as shown in FIG. On the other hand, conventional read-only DVD devices (DVD players and DVD
-ROM drive) and DVD-RAM devices have a laser wavelength of about 650 to 660 nm.

Therefore, in order to produce DVD-R devices inexpensively and in large quantities, it is necessary to use a laser oscillator having a wavelength of 6
It is more suitable to use a device having a wavelength of 50 to 660 nm, and it is expected that a DVD-R device for recording using a laser beam having a recording wavelength of 650 to 660 nm will appear in the future. In that case, the following problems occur.

At present, an organic dye film is used as a recording film of a DVD-R disk. This recording film has a high sensitivity of recording characteristics to the wavelength of a recording laser beam, and a laser beam having a wavelength of 630 to 640 nm and a wavelength of 650 nm. ~ 660
It is difficult to optimize the recording characteristics with both nm-based laser beams. Therefore, the wavelength of the recording laser beam is 63
A disk suitable for 0 to 640 nm (hereinafter referred to as a short wavelength disk) and a disk suitable for 650 to 660 nm (hereinafter referred to as a long wavelength disk) will be on the market. In this case, it is difficult to change the shape or the like of any of the DVD-R discs in order to maintain the feature that the disc can be reproduced by a read-only DVD device. Therefore, even though the DVD-R discs seem to be the same, if the combination of the recording laser beam wavelength of the recording device and the recommended recording wavelength (of the organic dye recording film) of the disc is different, the recording cannot be performed correctly, and the retry (recording cannot be performed correctly) Therefore, change the location on the disk and try recording again). To make matters worse, a DVD-R disc is a write-once disc, so that a disc recorded by mistake with a laser beam having a different recording wavelength cannot be recorded even if a device having a correct recording wavelength is used. I do.

An object of the present invention is to provide an optical disc recording apparatus in which discs having different recording characteristics such as the above-mentioned short-wavelength disc and long-wavelength disc may be mounted. If a disc that cannot be recorded is loaded, it is possible to notify the user that recording is not possible without recording, thereby improving usability and recording the loaded disc with incorrect recording. An object of the present invention is to provide an optical disk recording device that does not destroy a film (makes recording impossible).

[0011]

In order to achieve the above object, an optical disk recording apparatus according to the present invention comprises the following means. That is, in an optical disc recording apparatus that records information supplied from the outside using a laser beam on a recordable optical disc on which parameter information related to recording characteristics is recorded in advance, the parameter information is detected before recording the information on the optical disc. Detecting means for determining whether the parameter value of the detected parameter information is within a predetermined range, and recording the information when the determination result of the determining means is not within the predetermined range. And a recording control means for preventing such a situation. Further, when information is not recorded based on the detected parameter value, a control signal generation for generating a control signal for indicating to the user of the apparatus that recording is not to be performed based on the detected parameter value is generated. Means. In addition, the apparatus has a discharge mechanism for the mounted optical disk, and includes a discharge control unit that automatically discharges the mounted optical disk when information is not recorded based on the detected parameter value.

By providing the above means, in an optical disk recording apparatus in which a disk having different recording characteristic parameters may be mounted, it is possible to determine whether or not the mounted disk is a disk capable of recording correctly, When the disk is loaded, it is possible to notify the user that recording cannot be performed without recording, thereby improving the usability and destroying the recording film of the mounted disk due to erroneous recording. The present invention can provide an optical disk recording device that does not cause a problem.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. Before describing this embodiment, first, the relationship between an LPP signal and recording data will be described with reference to FIGS. This will be described with reference to FIG.

FIG. 4 shows the structure of the recorded data and the LPP.
The relationship between signals is shown. In FIG. 4, one ECC block is composed of 16 sector blocks.
One sector block is composed of 26 frame blocks. The above configuration is the same as that of the read-only DVD. In the recorded state, one frame block is recorded on a track length corresponding to the length of eight frequencies of the wobble signal.

The LPP signal is formed using three frequency components from the top of the wobble wave at the head of each frame, and the patterns are the four patterns shown in FIG. Of these, the patterns (1) and (2) represent the head of the LPP signal in each sector, and the patterns (3) and (4) represent "0" and "1" as information. There are two types of leading patterns for the following reasons.

The LPP is formed as a pit in a land portion, and is premised on detection by a push-pull method. Therefore, while the beam spot is scanning the groove to be recorded, the LPP is applied to both adjacent lands.
Is present, LPP signal components are mixed and LP
P cannot be detected. Therefore, when the LPP is located on both adjacent lands, the position of one LPP is shifted by one frame block. For this reason, if the LPP position is formed at an even position of the frame block of 0 to 25,
If the pattern is the pattern shown in (1) of FIG. 5 and is formed at an odd position, the LPP head pattern is changed to (2)
The LPP is formed such that it does not exist in the vicinity of both adjacent lands. This enables accurate detection of the LPP signal.

Therefore, the number of bits as information of the LPP signal is 13 bits, which is half that of one sector block composed of 26 frames, and is equivalent to 12 bits except for one bit of the head pattern. . From this, the number of LPP bits as information of one ECC block is 1 ECC block in 16 sectors, so that 1
It is 192 bits in 2 bits × 16.

As shown in FIG. 5, the LPP is formed at the apex of the wobble waveform, and the LPP signal superimposed on the wobble signal detected by the push-pull method has the threshold level V _th shown in the figure. By performing the comparison, the LPP of (1) to (4) can be obtained from the 3-bit pulse train.
The signal can be separated.

192 bits LP per ECC block
The P signal, as shown in FIG.
With 2 bits as one data unit, a 4-bit address and 8
Treated as bit data. The data is divided into two main parts, a 3-byte leading sector address as permanent data, a 3-byte parity for error detection / correction of this address data, and a 1-byte for setting the purpose of use of the remaining 6-byte sub data. Performs error detection and correction of 7-byte data excluding data and sector addresses 3
Consists of byte parity. The sector address of a read-only DVD is recorded in units of each sector. On the other hand, since the LPP sector address of the DVD-R has only three bytes for one ECC block, this sector address is the head of one ECC block. It shows the address of the sector, and the address of the remaining 11 sectors needs to be calculated from this start sector address.

The above is the details of the LPP signal of the DVD-R disc. Next, an embodiment of the present invention will be described based on this.

FIG. 1 is a block diagram showing the configuration of an optical disk recording apparatus according to one embodiment of the present invention. In FIG. 1, 1 is an optical disk (DVD-R disk), 2 is a spindle motor, 3 is a loading tray of the disk,
4 is a loading motor, 5 is an objective lens, 6 is a half mirror, 7 is a photodetector, 8 is a laser oscillator, 9 is a pickup, 10 is a thread motor, 11 is an arithmetic circuit, 1
2 is a focus control circuit, 13 is a tracking and thread control circuit, 14 is a spindle control circuit, 15 is a loading control circuit, 16 is a motor and actuator driver, 17 is an LPP detection circuit, 18 is an LPP signal decoder, and 19 is a wobble detection circuit , 20 is the wobble synchronization PL
L (phase-locked oscillation circuit), 21 is a system controller, 22 is an interface circuit, 23 is a memory, 24
Is an input / output terminal, 25 is an encoder, 26 is a laser driver, 27 is an equalizer, 28 is a slicer, 29 is a decoder, and 30 is a reproduction data synchronization PLL.

In the optical disk recording apparatus shown in the block diagram of FIG. 1, when the DVD-R disk 1 is mounted on the disk tray 3 in order to record information supplied via the input / output terminal 24, an LPP signal is first supplied. Is performed.
Therefore, the tracking & sled control circuit 13 moves the pickup 9 to the vicinity of the inner circumference of the disk 1. At the same time, the spindle control circuit 14 generates a spindle control signal so that the disk 1 has a predetermined rotation speed. When the rotation of the disk 1 rises to a predetermined speed, the laser driver 26 generates a control signal for causing the laser oscillator 8 to oscillate with the reproduction power. In this embodiment, the laser oscillator 8 has an oscillation wavelength of 650 to 6
The thing of 60 nm is used. The laser beam emitted by the laser oscillator 8 is condensed by the objective lens 5 via the half mirror 6, and is irradiated on the disk 1. The laser beam reflected by the disk surface is collected by the objective lens 5, reflected by the half mirror 6, and reaches the photodetector 7. The photodetector 7 is divided into four parts A, B, C, and D, and a detection signal of each part is supplied to an arithmetic circuit 11 at the next stage.

The arithmetic circuit 11 generates an RF signal having reproduction data information, an FE (focus error) signal, a TE (tracking error) signal, and a PP (push-pull) signal from the four detection signals of the photodetector 7. I do. RF above
The signal is a fully added signal of the four output signals of the photodetector 7,
The FE signal is generated by an astigmatism method, for example, by taking the difference [(A + C) − (B + D)] of the sum signal of the diagonal signals of the photodetector 7. The TE signal and the PP signal are generated by a push-pull method, for example, by taking the difference [(A + D)-(B + C)] of the photodetector divided into two with respect to the track axis of the reflected beam spot. TE signal and P
The difference between the P signals is that the TE signal is a narrowband signal and the PP signal is a wideband signal in the signal band.

The focus control circuit 12 uses the supplied FE signal to generate a focus control signal for controlling the objective lens 5 to a position where the objective lens 5 is focused on the disk surface. Tracking & thread control circuit 13
Generates a tracking control signal for controlling the objective lens 5 to be positioned at the center of the track of the disk by using the TE signal, and, when the target track moves to the outer periphery by the rotation of the disk 1, A thread control signal for moving the pickup 9 to the outer periphery is generated. The focus control signal, tracking control signal, sled control signal, and spindle control signal generated by each of the control circuits 12 to 14 are supplied to a motor & actuator driver 16, power-amplified, and each drive signal is provided in the pickup 9. It is supplied to a focus actuator (not shown) and a tracking actuator (not shown), a sled motor 10 and a spindle motor 4. As a result, the objective lens 5 is always controlled to the in-focus position by performing the focus control, and the tracking control and the sled control are performed to control the position of the objective lens 5 at the track center.

The detection of the important LPP signal in the present invention is performed in a state where the focus control and the tracking control are performed as described above. P generated by the arithmetic circuit 11
The P signal is supplied to the LPP detection circuit 17 and the wobble detection circuit 19. This PP signal has a waveform in which the wobble signal and the LPP signal are superimposed on the peak position of the wobble signal as in the waveform of the PP signal in FIG. 4 or the waveform shown in FIG.

The LPP detection circuit 17 compares the PP signal with the threshold level _Vth shown in FIG. 5A and supplies the same to the LPP decoder 18 as binary information.
On the other hand, the PP signal supplied to the wobble detection circuit 19 is
The substantially sinusoidal wobble signal is converted into a binary signal by comparing the wobble signal at its center level, and the binarized wobble signal is supplied to the wobble PLL 20. The wobble PLL 20 uses the binarized wobble signal as a reference signal and outputs a WCK signal corresponding to a data channel bit frequency.
(Wobble clock). The frequency of the WCK is eight periods for one frame data as described with reference to FIG. Since one frame is composed of 1488 channel bits, the ratio of the wobble signal frequency to the channel bit frequency is 1: 186. Therefore, the WCK generated by the wobble PLL 20 is
It becomes a clock obtained by multiplying the wobble signal by 186. The WCK synchronized with the wobble signal is supplied to the LPP decoder 18 and also supplied to an encoder 25 and a laser driver 26 that operate during recording.

The LPP decoder 18 decodes the binary LPP signal using WCK. First, the LPP signal decoder 18 detects the head of the frame as shown in (1) or (2) shown in FIG. 5 from the three consecutive wobble signal periods, and from there, 12 bits for each frame are detected. Is detected. Then, 12 bits × 1
L corresponding to one ECC block of 6 = 192 bits
The data of 8 bits × 16 shown in FIG. 6 is detected in units of PP bit data. At the time of this detection, error detection and correction of the head sector address, data classification data, and sub data are performed using each parity data. Next, the LPP decoder 18 uses the error-corrected data classification data and sub-data as necessary,
The parameter information regarding the recording time of the mounted DVD-R disc 1 is extracted, and the recommended laser wavelength value is supplied to the system controller 21 from the parameter information.

The system controller 21 compares the recommended recording wavelength value supplied from the LPP decoder 18 with the oscillation laser wavelength (650 to 660 nm) of the laser oscillator 8 provided in this apparatus. Then, if the difference between the recommended wavelength recorded on the disk 1 and the wavelength of the laser oscillator 8 of the present apparatus is within a predetermined allowable range, the operation proceeds to the recording operation.

On the other hand, when the wavelength difference is out of the allowable range,
The system controller 21 stops the above-described recording preparation operation thereafter. Specifically, the stop of the recording preparation operation is to stop the laser oscillator 8 and stop the focus control operation, the tracking & sled control operation, and the spindle control operation. Since the system controller 21 needs to inform the user that the loaded disc cannot be recorded correctly using this apparatus, the system controller 21 generates a control signal for transmitting this message information to the user, and generates an interface circuit. 22
And output via the input / output terminal 24. I / O terminal 2
The connection destination of 4 is an input / output terminal of a display device (not shown) or a personal computer (not shown) on which the device is mounted, and the like.
The optical disk recording device of the present invention does not necessarily need to have a display device (of course, when the optical disk recording device of the present invention has a display function, the optical disk recording device itself displays and outputs a message). In addition, since information cannot be recorded on a disk mounted using this apparatus, the system controller 21 sends a disk discharge signal to the loading control circuit 15 to discharge the mounted disk.
To supply. The loading control circuit 15 controls the driving of the loading motor 4 via the motor & actuator driver 16 in accordance with the disk ejection signal supplied from the system controller 21, and
To eject the disc 1.

Next, a case will be described in which it is determined that the value is within the allowable range by comparing the parameters (laser wavelength information) and the operation shifts to the recording operation. When recording information, first, it is necessary to make the spindle control an accurate constant linear velocity control. This is because the recording characteristics of the recording film of the disk 1 generally depend on the linear velocity. The constant linear velocity control of the spindle uses a binarized wobble signal detected by the wobble detection circuit 19. This binarized wobble signal is supplied to the spindle control circuit 14. Spindle control circuit 14
Measures the cycle of the binarized wobble signal and generates a difference between the target cycle and the target linear velocity as a cycle error signal. Further, a phase difference between the internal wobble reference signal corresponding to the target linear velocity and the binary wobble signal is generated as a phase error signal. The periodic error signal and the phase error signal are added to form a motor control signal as a spindle control signal.
It is supplied to the spindle motor 2 via the actuator driver 16. Thus, even if the position of the pickup 9 changes in the radial direction of the disk 1, the rotation of the disk 1 can be constantly controlled at a constant linear velocity.

The recording information supplied through the input / output terminal 24 and the interface circuit 22 is temporarily stored in the memory 23.
And supplied to the encoder 25 via the interface circuit 22 at a predetermined recording transfer rate. The above-mentioned predetermined recording transfer rate is, for example, a standard speed DV
It is set to 11.08 Mbps which is equal to the reproduction transfer rate of D. The encoder 25 adds sector address data, error detection / correction data, and synchronization signal data to the recording data in units of 1 ECC block (32 Kbytes), performs data scramble processing and 8-16 modulation processing, and performs recording data recording. The rows are supplied to a laser driver 26. The sector address data added by the encoder 25 is calculated from the head sector address of one ECC block detected from the disk 1 by the LPP decoder 18. The recording data sequence supplied from the encoder 25 is sent to the laser driver 26 in synchronization with WCK (wobble clock) supplied from the wobble PLL 20. The laser driver 26 also has a wobble PL
The recording data sequence is converted into a pulse sequence suitable for recording in synchronization with the WCK supplied from L20, and a laser oscillation control signal based on the recording pulse is supplied to the laser oscillator 8. The laser oscillator 8 emits a laser beam having a recording power according to the laser oscillation control signal.
, Information is recorded on the disk 1.

The recorded information recorded by the above operation is:
If necessary, it is confirmed by a verify operation whether the data has been correctly recorded. In the verify operation, the recorded tracks are sequentially reproduced by a laser beam having a reproduction power.
The laser light reflected on the track to be reproduced and reflected on the recording surface is supplied to the photodetector 7 via the objective lens 5 and the half mirror 6, converted into an electric signal, and supplied to the arithmetic circuit 11.

The arithmetic circuit 11 supplies an RF signal which is a full addition signal of the photodetector 7 to the equalizer 27. The equalizer 27 limits the band of the reproduced RF signal and amplifies a predetermined band component, and supplies an equalized reproduced signal to the slicer 28. The slicer 28 converts the equalized reproduction signal into a binarized reproduction signal by comparing the equalized reproduction signal at an optimum slice level, and supplies the binarized reproduction signal to the decoder 29 and the data PLL 30. Data P
The LL 30 generates a clock DCK equal to the reproduction channel bit frequency synchronized with the binarized reproduction signal and supplies the clock DCK to the decoder 29. The decoder 29 decodes the reproduction data using the binary reproduction signal and the DCK. This decoding processing corresponds to the reverse processing of the processing in the encoder 25, and performs synchronization signal data detection, 8-16 demodulation, error detection and correction, and descrambling processing. The reproduction information obtained by the reproduction decoding process is compared with the recording information stored in the memory 23 by the interface circuit 22. If the reproduction information matches, the recording / reproduction is correctly performed. become. If they do not match, it is left to the user to perform re-recording using a different area on the disc 1 or to end recording.

The operation at the time of recording using the DVD-R disk has been described with reference to the block diagram of FIG. 1 along with the detailed operation of each constituent circuit. The outline of this recording sequence is shown as a flowchart. FIG.

As described above, according to the present embodiment, it is possible to mount a disk having different recording characteristics such as a recording laser beam wavelength even if the disks have the same appearance and seemingly the same. If it is possible, it is possible to determine whether the loaded disc is a disc that can record correctly, and if a disc that cannot be recorded is loaded, it is possible to notify the user that recording is not possible without recording. While improving
It is possible to provide an optical disk recording apparatus that does not erroneously perform recording on the mounted disk and destroy (make the recording impossible) the recording film of the mounted disk.

In the above embodiment, the initial LPP detection is performed when the rotation of the disk reaches a predetermined rotation speed. This is a state in which the spindle control is performed at a constant linear speed using a wobble signal. You may go in.

Further, in the above embodiment, when it is determined that the recording is possible by the LPP detection, the spindle control is set to the linear velocity constant control.
Although the control is performed using the binarized wobble signal, a signal obtained by dividing WCK which is the clock of the wobble PLL 20 by a predetermined amount may be used instead of the binarized wobble signal.
This is because the response of the wobble PLL can be set much faster than the response of the spindle.

Further, the control signal for generating the message information for notifying the user that the mounted disc cannot be properly recorded, which has been described in the above embodiment, is transmitted to the display means connected via the input / output terminal 24. It goes without saying that the error display code may be a predetermined error display code with the external device.

[0039]

As described above, according to the present invention, there is provided an optical disc recording apparatus in which a disc having a different recording characteristic may be mounted, such as the above-described short-wavelength disc and long-wavelength disc. It is possible to determine whether the loaded disc is a disc that can record correctly, and if a disc that cannot be recorded is loaded, it is possible to notify the user that recording is not possible without recording, so that usability is improved and incorrect It is possible to provide an optical disk recording apparatus that does not destroy the recording film of the mounted disk during recording (makes the recording film unreadable).

[Brief description of the drawings]

FIG. 1 is a block diagram showing an overall configuration of an optical disc recording device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing specifications of a DVD-R disc.

FIG. 3 is an explanatory diagram schematically showing a recording surface of a DVD-R disc.

FIG. 4 is an explanatory diagram showing a relationship between a configuration of data to be recorded and an LPP signal.

FIG. 5 is an explanatory diagram showing four patterns of an LPP signal.

FIG. 6 is an explanatory diagram illustrating a data configuration of an LPP signal.

FIG. 7 is a flowchart for explaining a recording sequence in the optical disc recording apparatus according to one embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 optical disk 2, 4, 10 motor 3 disk tray 5 objective lens 6 half mirror 7 photodetector 8 laser oscillator 9 pickup 11 arithmetic circuit 12 focus control circuit 13 tracking & sled control circuit 14 spindle control circuit 15 loading control circuit 16 motor & Actuator driver 17 LPP detection circuit 18 LPP decoder 19 Wobble detection circuit 20 Wobble PLL 21 System controller 22 Interface circuit 23 Memory 24 Input / output terminal 25 Encoder 26 Laser driver 27 Equalizer 28 Slicer 29 Decoder 30 Data PLL

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shimitsu Higuchi 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture F-term (reference) 5D066 DA03 DA12 HA01 5D090 AA01 BB02 BB03 CC18 DD03 DD05 FF08 GG32

Claims (6)

[Claims] 1. An optical disc recording apparatus for recording, using a laser beam, information supplied from the outside on a recordable optical disc in which at least parameter information relating to information recording characteristics is recorded in advance, comprising: Detecting means for detecting the parameter information prior to recording, determining means for determining whether a parameter value of the detected parameter information is within a predetermined range, and determining the result of the determining means within the predetermined range. An optical disc recording apparatus, comprising: a recording control unit for not recording information when there is no information. 2. A method according to claim 1, wherein the recording film has an organic dye film, and at least parameter information relating to information recording characteristics is previously recorded in the form of pits on one of the lands and grooves formed alternately in a spiral shape where no information is recorded. An optical disc recording apparatus for recording information supplied from the outside using a laser beam on a recorded optical disc, comprising: pit signal detection means for detecting the pits before recording information on the optical disc; Decoding means for decoding and reproducing the parameter information, judging means for judging whether or not the parameter value of the reproduced parameter information is within a predetermined range, and when the judgment result of the judging means is not within the predetermined range Recording control means for preventing recording of information. Apparatus. 3. The optical disk recording apparatus according to claim 1, wherein when information is not recorded based on the detected parameter value, recording is performed to a user of the apparatus based on the detected parameter value. An optical disc recording apparatus, comprising: a control signal generating means for generating a control signal for indicating that no data exists. 4. The optical disk recording apparatus according to claim 1, further comprising a mechanism for ejecting the mounted optical disk, wherein when the information is not recorded based on the detected parameter value, the mounted optical disk is mounted. An optical disc recording apparatus comprising an ejection control means for automatically ejecting an optical disc. 5. The optical disc recording apparatus according to claim 1, wherein the parameter information relating to the recording characteristics of the information is recommended value information of a wavelength of a laser beam used for recording. 6. The optical disk recording apparatus according to claim 5, further comprising a laser oscillator having a wavelength of about 650 to 660 nm, wherein a recommended value of the wavelength of the laser beam used at the time of said recording reproduced from the loaded recording disk is 650. ~ 660
An optical disc recording apparatus, wherein recording of information is not performed when the distance is not within nm.