JP2000357344A - Optical disk and optical disk recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to decrease the crosstalks between wobbles and the jitter increase of bit data in the recording of a large quantity of information by forming wobble periods at a specified equal angle with respect to a disk center, thereby making the linear density constant with respect to a recording surface. SOLUTION: The wobbles send the signals generated by synchronizing the clock obtained by a clock generator 27 for wobbles synchronized with the output of a rotary encoder 28 with the data obtained by a wobble data generator 22 to a laser 24 for master disk exposure. The signals are sent to a drive system for deflecting the laser beam in the radial direction of the disk, by which the wobbles are recorded on a master optical disk 45. The clock for the wobbles of the clock generator 27 for the wobbles is directly formed from the rotary encoder 28 and, therefore, the wobbles which are always equal in the angle with respect to the disk center may be formed. The start pulse obtained by a linear encoder 31 is used as the reference for an exposure start position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to, for example, a hybrid type having a read-only area (CD-
(Such as a CD-R disc on which ROM data is recorded)
The present invention relates to a recordable optical disc and an optical disc recording apparatus that forms a continuous pit row wobbled in a spiral on a recording surface of the recordable optical disc.

[0002]

2. Description of the Related Art In recent years, a recordable optical disk (hereinafter simply referred to as an "optical disk") is a CD-R disk, but the inner peripheral side of its recording surface is formed and fixed by pits similar to a CD-ROM. Techniques for storing information have been developed. In other words, the fixed information is entered when the substrate of the optical disc is molded, and is made possible by putting the fixed information in a stamper (mold) for molding.

[0003] Except for the pit forming portion on the inner periphery of such an optical disc, a groove (groove) which is wobbled is formed in the same manner as a conventional CD-R disc, and information is recorded on the groove in the optical disc (CD). -R) It is recorded by the drive. Such an optical disk is a so-called partial ROM disk.

The pit row of this optical disk is a CD-ROM
Unlike the above, it is formed in a wobble (meandering). In other words, the CD-R drive that records information on the optical disc uses the address information included in the modulated wobble to search for the target address.
The ROM section of the M disk is also wobbled.

[0005] This partial ROM application is effective for next-generation optical disks, and it is desired to realize a partial-ROM disk corresponding to the next-generation high-density optical disk.

[0006]

However, in an optical disk such as the above-described partial ROM disk, the track pitch becomes narrower as the density increases, so that the wobble is frequency-modulated (CD-R disk). If the recording period is modulated (modulation in which the recording period changes) or phase modulated (modulation in which the recording period is constant but the phase changes depending on the data), the pits in the ROM section become close to the pits in the adjacent track and crosstalk occurs. By R
There has been a problem that a phenomenon that the jitter of the f signal becomes large occurs.

A wobble signal detected through a low-pass filter because the pits are wobbled (including address information and the like, and also used for motor rotation control, etc.)
However, there is also a problem that the crosstalk causes a phase difference and an amplitude fluctuation, thereby causing jitter in the wobble detection signal.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a cross talk between wobbles when a large amount of information is recorded on a recording surface of a recordable optical disk with a constant linear density. And to reduce the increase in jitter of pit data.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an optical disc on which information is recorded by forming a spiral wobbled continuous pit array on a recording surface. It is formed at a constant angle with respect to the center of the disk.

In the above optical disk,
When the wobble is modulated and recorded, the presence or absence of the wobble may represent bit information "1" and "0" or "0" and "1", respectively.

Further, in the above-mentioned optical disc, it is preferable that "1" and "0" of the pit information are generated depending on the presence or absence of a plurality of wobbles.

Further, in the above optical disk,
The pit information may be recorded by a constant linear density method.

Further, in the above-described optical disk, it is preferable that continuous information such as program data, audio data, or video data be recorded in the wobble information of the wobble.

Further, the recording surface has a pit area of one or a plurality of spiral continuous pit rows and one or a plurality of recording / reproducing areas, and the continuous pit row of the pit areas and the recording / reproducing area have a pit area. In an optical disk having grooves wobbled, the wobble cycle of the wobbles may be formed at a constant angle with respect to the center of the disk.

Furthermore, when the wobble is modulated and recorded on the optical disk as described above, the presence or absence of the wobble indicates "1" and "0" or "0" and "1" of the pit information, respectively. It is good to

Further, in the above optical disk,
It is preferable that "1" and "0" of the pit information be generated depending on the presence or absence of a plurality of wobbles.

Further, in the above-mentioned optical disk, the pit information may be recorded in a constant linear density system.

Further, in the optical disk as described above, it is preferable to record continuous information such as program data, audio data or video data in the wobble information of the wobble.

Further, in an optical disk recording apparatus for recording information by forming a continuous pit row wobbled in a spiral shape on the recording surface of the optical disk, the wobble period of the wobble is formed at a constant angle with respect to the center of the disk. It is preferable to provide a means for performing this.

Further, in the optical disk recording apparatus as described above, when the wobble is modulated and recorded, the pit information "1" and "0" are respectively determined depending on the presence or absence of the wobble.
Alternatively, means for recording so as to represent "0" and "1" may be provided.

Further, in the optical disk recording apparatus as described above, it is preferable to provide means for recording so that "1" and "0" of the pit information are generated depending on the presence or absence of a plurality of wobbles.

Further, in the optical disk recording apparatus as described above, it is preferable to provide a means for recording the pit information in a constant linear density system.

Further, in the optical disk recording apparatus as described above, it is preferable to provide a means for recording continuous information such as program data, audio data or video data in the wobble information of the wobble.

Also, for an optical disk having one or more continuous pit rows in a spiral shape on the recording surface and one or more recording / reproducing areas, the continuous pit rows in the pit area and the recording In an optical disk recording apparatus that forms grooves in a reproduction area by wobbling, it is preferable to provide means for forming a wobble cycle of the wobble at a constant angle with respect to the center of the disk.

Further, in the optical disk recording apparatus as described above, when the wobble is modulated and recorded, the pit information "1" and "0" are respectively determined depending on the presence or absence of the wobble.
Alternatively, means for recording so as to represent "0" and "1" may be provided.

In the above-described optical disk recording apparatus, it is preferable to provide means for recording so that "1" and "0" of the pit information are generated depending on the presence or absence of a plurality of wobbles.

Further, in the above-mentioned optical disk recording apparatus, it is preferable to provide means for recording the pit information in a constant linear density system.

Further, in the optical disk recording apparatus as described above, it is preferable to provide a means for recording continuous information such as program data, audio data, or video data in the wobble information of the wobble.

[0029]

Embodiments of the present invention will be specifically described below with reference to the drawings. First, the conventional C
An outline of the present embodiment for solving a problem in a recordable optical disk such as a DR will be described.

In the optical disk of this embodiment, the wobble cycle is arranged at an equal angle to the recording surface with respect to the center of the disk, and the information carried on the wobble includes the frequency, phase,
A method in which the amplitude does not change is preferable.

For this purpose, when the information is "0" and the information is "1" and "0", the wobble has a fixed cycle.
When the information is "1", there is no wobble. By doing so, the wobble signal that is the output of the low-pass filter can be made to be least affected by crosstalk.

That is, when there are wobble pits on both sides, the crosstalk to the wobble signal only affects a certain amplitude deterioration without giving a phase change to the main detection wobble. As described above, since only the influence of the constant amplitude is obtained, the influence of the phase fluctuation and the amplitude fluctuation can be reduced.

Further, the Rf signal of the main pit receives crosstalk from the pit of the adjacent track.
This effect is equivalent to a situation in which a beam on a track for detecting a pit vibrates and detects in the direction perpendicular to the track in a form equal to the wobble detection frequency and amplitude, considering the crosstalk when there is no wobble. . In other words, it is equivalent to a situation where a tracking error has occurred a little.

Therefore, if the wobble cycle with respect to the recording surface of the optical disc is made equal to the center of the disc, the deterioration can be accommodated by this amount. However, if the phase of the wobble of the adjacent track is different, the pits of the adjacent track and the main track may come close. Come. In this case, the interference between the tracks between the pits and the waveform in the direction perpendicular to the pits increases, and this causes the waveform to be disturbed and the jitter to increase.

In the optical disk of this embodiment, the pit data has a constant linear density and the information amount can be maximized.
Since the wobble period of the wobbles is made equal to the center of the disc, crosstalk between wobbles and an increase in jitter of pit data can be reduced.

When information is inserted into the wobble on the recording surface, when the information represents "1", pits are arranged on the center line of the track without wobble, thereby enabling other modulation (frequency modulation, phase modulation). The crosstalk can be reduced as compared with the case where

Next, an outline of an embodiment of the optical disk recording apparatus of the present invention will be described. A master exposure method in this optical disk recording device will be described. First, since pit data when creating an optical disc is important, the CLV linear velocity is constant (C
LV) Exposure is good.

That is, when recording from the inner circumference to the outer circumference of the recording surface of the optical disk, the speed of the disk rotation speed is inversely proportional to the radius, and is controlled to be slower toward the outer circumference. This control is performed by generating a target value of the rotation speed by changing the clock every cycle by the synthesizer.

At this time, the clock has sufficient accuracy and changes stepwise every rotation. However, it is necessary to set a constant rising time constant in a circuit related to this control, and to set an inertia and viscosity to the optical disk. CLV control can be performed smoothly by forming a control system in consideration of the load and the friction load and applying a driving force to the motor.

At this time, control is performed with the basic clock of pit data recording kept constant. By doing so, the pit lengths recorded on the outer and inner circumferences of the recording surface of the optical disk become equal.

The clock for generating the wobble is performed separately from the recording clock for the pit data, depending on whether the output of the encoder mechanically connected to the rotation of the rotary motor is multiplied or divided. By doing so, it is possible to control the wobble to be always constant at the rotation angle even when the rotation speed changes.

Conventionally, the wobble generation clock and the pit data recording clock use the same system clock. In other words, there is no way to directly take out only the wobble generation clock from the encoder as described above.

The information recording area is generated by wobbling not a pit but a continuous groove. The wobbles are generated in a cycle at the same angle as the wobbles in the pit information area.
The wobbles are generated by modulating information such as addresses in the same manner as in the pit information area by the method described above.

Next, a drive for recording information on the optical disk created as described above will be described. When an optical disk is configured as a hybrid medium using the above method, there are the following two methods for generating a write clock when writing data in an information recording area by a drive.

One is to perform a constant rotation control with a clock obtained by demodulating a wobble signal, and to generate a target frequency clock by a synthesizer from the address demodulated from the wobble and the above-mentioned clock and control the recording clock so that the linear density becomes constant. It is a method to do.

The other is a method of recording with a constant recording frequency. In order to keep the line density constant,
When the disk rotation speed of the target address is set and the address is reproduced and recording is started, the disk rotation speed is controlled so as to keep the linear density constant. That is, the number of rotations decreases as the recording surface of the optical disc advances from the inner circumference to the outer circumference.

When recording at a constant frequency clock while changing the rotation speed, the address information in the wobble indicating the written position is gently corrected when the rotation speed fluctuates from the original one. Controls the disk speed.

The role of the pit portion wobble here is to perform a high-speed seek when performing a write operation. At this time, when the pit position is reached, if the address in the wobble is immediately known, the pit can be accessed at a higher speed. .
The reproduction of the pit information area (ROM section) is performed using a normal CD-ROM.
What is necessary is just to reproduce | regenerate like ROM.

That is, it is sufficient to access and reproduce the target position by the address information in the pit information without relying on the wobble information.

In the above description, measures against crosstalk in the hybrid media have been described. However, it is also possible to use the entire area as a pit information area and record other information in synchronization with the pit information in the wobble. .

For example, when video information is recorded in the pit information area, an application such as recording a translation of a subtitle in a wobble can be provided.
The pit information is used to record data of application software, and the wobbles are recorded data of software for moving the application.

FIG. 2 is an explanatory diagram showing a format of a hybrid media according to an embodiment of the optical disk of the present invention. This optical disc 1 is provided with a pit information area 2 composed of spirally continuous pits on the inner peripheral side. An information recording area 3 composed of continuous groups (grooves) is provided outside the area.

The information recording area is a CD-R (Compac)
In the hybrid media that is set to t Disc-Recordable, both the pit information area 2 and the information recording area 3 are tracks (continuous pit trains or grooves).
Are wobbled (meandering) at a constant center spatial frequency and frequency-modulated to record information such as addresses.

Here, in the prior art, phase modulation is also conceivable. Even if the modulation is not performed, the interval between pits on adjacent tracks is narrow as shown by pits 5 on track 4 shown by a thick broken line in FIG. May be.

Further, if the frequency or phase is modulated, the frequency or phase is further changed, so that the pits between the adjacent pits become closer as shown in FIG. In other words, the influence of crosstalk increases at the location indicated by the arrow A in the figure, and the jitter of the pit information increases, so that a pit information reproduction error occurs.

Therefore, as shown in FIG.
If the pits are formed so as to wobble at an equal angle R with respect to the center O of the disk, the pit interval between adjacent tracks is always constant, like the pit 7 formed on the track 6 shown by the thin broken line in FIG. Thus, the adverse effects of crosstalk as described above can be reduced.

When information is recorded on wobbles, the influence of crosstalk is increased in the conventional phase modulation method or frequency modulation method.

Therefore, in the optical disk according to the present embodiment, if the wobbled state and the wobbled state represent "1" or "0" of information as in the pit 8 shown by hatching in FIG. The effect of the crosstalk at the location indicated by the arrow B in the figure is reduced, and the crosstalk between the pits is sufficiently smaller than in the prior art.

Further, since the wobbles on the recording surface are arranged at an equal angle around the center of the disk, when a modulated wobble signal is detected from continuous wobble pits, the wobbles are equal at the center of the disk or there is no wobble. Crosstalk between wobbles is also reduced.

That is, since the phase shift or the amplitude fluctuation due to the crosstalk between the wobble signals is small, the wobble detection error is extremely reduced as compared with the prior art.

FIG. 5 is an explanatory diagram of the concept of the function of detecting a wobble and a pit Rf signal in this embodiment.
A beam spot (light spot) S output from an objective lens of an optical pickup (not shown) and formed on the optical disk is reflected on the optical disk and passes through the objective lens (not shown) to the two-division photodiode 10. To reach.

The reflected light is light diffracted by pits P on the optical disk. The light is converted into a current by the two-segment photodiode 10, amplified by an amplifier (not shown), detected as a voltage signal, a sum signal is extracted as a pit Rf signal, and each output system of the two-segment photodiode 10 is output. To the low-pass filter 11
The output of what is output through a and 11b becomes a push-pull signal indicating a so-called tracking error. A signal obtained by passing the push-pull signal through the wobble detection band-pass filter 12 is a wobble signal.

FIG. 6 is a block diagram showing the configuration of an optical disk recording apparatus for producing the optical disk of the present embodiment.
This optical disk recording device includes a CPU, a ROM, and an RA.
A controller 23 and the like realized by a microcomputer including M and the like are provided, and an optical disk master 45 is exposed by a master exposure unit to manufacture a stamper for manufacturing the optical disk.

As is clear from the above description, the pit recording clock is designed to generate a constant frequency, and the disk rotation of the optical disk master 45 and the feed speed of the seek system are inversely proportional to the radius of the disk to be recorded. The controller 23 sets the frequency a plurality of times per disk rotation so that the output frequency of the synthesizer 35 changes.

This output is input to a phase comparator 34 for controlling the speed of the rotary motor 26, and is compared in phase with a clock having a frequency proportional to the rotary speed output from a rotary encoder 28 coaxial with the rotary motor 26. You. Then, the charge pump 33 is set so that the phase difference becomes zero.
Then, the motor driver 25 is driven through the loop filter 32.

Further, the seek motor 29 is driven so that the laser spot L on the disk moves by one track each time the optical disk master 45 makes one rotation, and the optical disk master (stamper master) 45 is moved in the radial direction. This moving speed is also made inversely proportional to the disk radius.

This is done by comparing the phase of the clock output from the linear encoder 31 with the output converted by the seek clock generator 38 so that the output of the synthesizer 35 becomes the target value for moving the seek. . In this way, the master optical disc (stamper master)
Pits are recorded at 45 at a constant linear density.

For the pit data, a laser drive current corresponding to the data obtained from the pit data generator 21 is sent to the master exposure laser 24 in synchronization with the write clock to record pits on the optical disk master 45. become.

On the other hand, the wobble is a signal for synchronizing the clock obtained from the wobble clock generator 27 synchronized with the output of the rotary encoder 28 with the data obtained from the wobble data generator 22 for the master exposure. Send to laser 24. This signal is sent to a drive system that oscillates the laser beam in the radial direction of the disk, so that wobbles are recorded on the optical disk master (stamper master) 45.

The point here is that the wobble clock of the wobble clock generator 27 is directly generated by the rotary encoder 28, so that the wobble which always becomes equiangular with respect to the center of the disk can be surely generated.

The start pulse obtained from the linear encoder 31 is used as a reference for the exposure start position, and the start pulse output from the rotary encoder 28 is a pulse generated once per rotation, so that the control is reliably performed. Is used to monitor whether or not

In this manner, an optical disk is created using the optical disk master 45 created above.

FIG. 7 is a block diagram showing the configuration of a drive for recording and reproducing information on the disk created as described above. This drive has a controller 56 realized by a microcomputer including a CPU, a ROM, a RAM, and the like, and records data in an information recording area of an optical disk of a hybrid medium created using the optical disk master 45 described above. There are two methods for generating a write clock when writing the data.

One is that a wobble signal is demodulated by an analog operation circuit 55, a clock extracted from the wobble signal is sent to a selector 60 via a signal line L 6, and a phase comparator 59 for controlling rotation through the selector 60. Then, a fixed clock having a fixed frequency is generated from the oscillator 62 by the synthesizer 61 and is used as a reference signal for phase comparison to perform constant rotation control.

The controller 56 specifies a recording clock frequency at which the linear density is constant to the synthesizer 63 via the signal line L8, and the recording clock is such that the clock demodulated from the wobble is converted to the synthesizer 63 at a constant linear density.
3 generates a target frequency clock.

The controller 56 sends a signal line L1
The recording data and the like are sent to the analog arithmetic circuit 55 via the.
Further, a selection signal (selection from wobble, pit, or mark) from which a signal synchronized with the number of rotations of the disk is obtained is sent to selector 60 via signal line L5.

The synthesizer 6 is connected via the signal line L7.
1 to a synthesizer 63 via a signal line L8, and a recording clock frequency specifying signal for maintaining a constant linear density to a signal line L.
9, a clock signal extracted from the pit or mark reproduction signal is sent to the selector 60.

On the other hand, the analog arithmetic circuit 55 sends an Rf signal via the signal line L2, a servo signal via the signal line L3, and an address signal to the controller 56 via the signal line L4.

The controller 56 determines the clock frequency generated by the synthesizer 61 based on the address information demodulated by the analog operation circuit 55.

The other is a method of recording with a constant recording frequency. In order to keep the line density constant,
The output of the oscillator 62 oscillating at a fixed frequency is used by the synthesizer 61 to generate a reference frequency for phase comparison so as to reach the disk rotation speed at the target address. Then, the wobble signal is compared with the reference frequency.

In this way, the disk rotation speed is first determined. Thereafter, when the address is reproduced and the recording of the information is started, the controller 56 controls the reference signal of the synthesizer 61 to change the disk rotation speed while watching the address signal so that the linear density becomes constant. Reproduction of the pit information area (ROM section) is performed using a normal CD-RO
What is necessary is just to reproduce | regenerate like M.

That is, if the target position is accessed by the address information in the pit information without relying on the wobble information, and the clock generated by the pit is sent to the phase comparator 59 through the selector 60, the disk can be read in the same manner as described above. The rotation control is performed, and the pit data is reproduced. And
The recorded area can use the same reproduction method as the pit information area.

In the optical disk of this embodiment, the problem of crosstalk in both pits and wobbles is reduced, so that the track pitch can be narrowed and higher density can be achieved. Also,
A modulation method in which the influence of crosstalk is reduced can be obtained.
Further, since one bit is represented by a plurality of wobbles, a more reliable modulation scheme can be obtained.

Since the pits have a constant linear density with respect to wobbles swinging at an equal angle to the center of the disk, information can be recorded at a high density in the pit area. further,
Since the application information is recorded in synchronization with the pit data, the range of application applications is widened, and a new application is discovered.

Further, since the application information is recorded in synchronization with the pit data in a stable wobble, applications having higher potential are spread. Further, the density of the hybrid media can be increased.

Further, a wobble modulation method suitable for increasing the density of the hybrid media becomes possible. Furthermore, a wobble modulation method suitable for high density and high reliability of the hybrid media can be realized.

Further, it is possible to provide a format suitable for increasing the density of the hybrid media. Furthermore, since the application information is also recorded in the wobble, the range of application uses is widened, and a new application is discovered.

[0088]

As described above, according to the optical disk and the optical disk recording apparatus of the present invention, the crosstalk between wobbles and the pits when recording a large amount of information while keeping the linear density constant on the recording surface. The increase in data jitter can be reduced.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a format of a recording surface of the optical disc shown in FIG.

FIG. 2 is an explanatory diagram showing a format of a hybrid media of an optical disc according to an embodiment of the present invention.

FIG. 3 is a diagram showing a format of a wobble having an equal angle R when pits are formed on the optical disc shown in FIG. 2;

FIG. 4 is an explanatory diagram showing another format of the recording surface of the optical disc shown in FIG. 2;

FIG. 5 is an explanatory diagram of a concept of a function of detecting a wobble and a pit Rf signal in the embodiment of the present invention.

FIG. 6 is a block diagram showing a configuration of an optical disk recording apparatus for creating an optical disk according to an embodiment of the present invention.

FIG. 7 is a block diagram illustrating a configuration of a drive that records and reproduces information on an optical disc according to an embodiment of the present invention.

[Description of Signs] 1: Optical disc 2: Pit information area 3: Information recording area 4, 6: Track 5, 7, 8, P: Pit 10: Two-segment photodiode 11a, 11b: Low-pass filter 12: Wobble detection Bandpass filter 21: Pit data generator 22: Wobble data generator 23, 56: Controller 24: Laser for master exposure 25: Motor driver 26, 52: Rotary motor 27: Wobble clock generator 28: Rotary encoder 29: Seek Motors 30, 51: motor driver 31: linear encoders 32, 41, 57: loop filters 33, 40, 58: charge pumps 34, 39, 59: phase comparator 45: master optical disk (stamper master) 53: pickup 54: Seek mechanism 55: Analog operation circuit 60: Select Motor 61 and 63: Synthesis 62: Oscillator 64: write clock R: equiangularly O: center of the optical disc S: beam spot

Claims (20)

[Claims] 1. An optical disk on which information is recorded by forming a continuous pit row wobbled in a spiral shape on a recording surface, wherein a wobble period of the wobble is formed at a constant equal angle with respect to the center of the disk. Optical disk. 2. The optical disc according to claim 1, wherein when the wobble is modulated and recorded, the presence or absence of the wobble indicates “1” and “0” or “0” and “1” of the pit information, respectively. An optical disk characterized in that: 3. The optical disk according to claim 1, wherein the pit information “1” and “0” are generated based on the presence or absence of a plurality of wobbles. 4. The optical disk according to claim 1, wherein said pit information is recorded by a constant linear density system. 5. The optical disk according to claim 1, wherein continuous information such as program data, audio data, or video data is recorded in the wobble information of the wobble. . 6. A recording surface having a pit area of one or a plurality of spiral continuous pit rows and one or a plurality of recording / reproducing areas, wherein the continuous pit row of the pit area and the recording / reproducing area are provided. An optical disc having grooves wobbled, wherein a wobble cycle of the wobbles is formed at a constant angle with respect to the center of the disc. 7. The optical disk according to claim 6, wherein when the wobble is modulated and recorded, the presence or absence of the wobble indicates “1” and “0” or “0” and “1” of pit information, respectively. An optical disk characterized in that: 8. The optical disk according to claim 6, wherein “1” and “0” of the pit information are generated based on presence / absence of a plurality of wobbles. 9. The optical disk according to claim 6, wherein the pit information is recorded by a constant linear density method. 10. The optical disk according to claim 6, wherein continuous information such as program data, audio data, or video data is recorded in the wobble information of the wobble. . 11. An optical disk recording apparatus for recording information by forming a spiral wobbled continuous pit array on a recording surface of an optical disk, wherein the wobble period of the wobble is formed at a constant angle with respect to the center of the disk. An optical disk recording apparatus characterized by comprising means for performing. 12. The optical disk recording apparatus according to claim 11, wherein when the wobble is modulated and recorded, “1” and “0” or “0” and “1” of pit information are respectively determined according to the presence or absence of the wobble. An optical disc recording apparatus, characterized by comprising means for recording as indicated. 13. The optical disk recording apparatus according to claim 11, further comprising means for recording so that “1” and “0” of the pit information are generated depending on presence / absence of a plurality of wobbles. Optical disk recording device. 14. The optical disk recording apparatus according to claim 11, further comprising means for recording the pit information in a constant linear density system. 15. The optical disk recording apparatus according to claim 11, further comprising means for recording continuous information such as program data, audio data, or video data in the wobble information of the wobble. An optical disk recording device characterized by the above-mentioned. 16. An optical disk having a spiral pit area or a plurality of continuous pit rows on a recording surface and one or a plurality of recording / reproducing areas, and the continuous pit row of the pit area and the recording area. An optical disk recording apparatus for forming a groove in a reproduction area by wobbling, comprising: means for forming a wobble cycle of the wobble at a constant angle with respect to the center of the disk. 17. The optical disk recording apparatus according to claim 16, wherein when the wobble is modulated and recorded, “1” and “0” or “0” and “1” of pit information are respectively determined depending on the presence or absence of the wobble. An optical disc recording apparatus, characterized by comprising means for recording as indicated. 18. The optical disk recording apparatus according to claim 16, further comprising means for recording such that "1" and "0" of the pit information are generated depending on the presence or absence of a plurality of wobbles. Optical disk recording device. 19. The optical disk recording apparatus according to claim 16, further comprising means for recording the pit information in a constant linear density system. 20. The optical disk recording apparatus according to claim 16, further comprising means for recording continuous information such as program data, audio data, or video data in the wobble information of the wobble. An optical disk recording device characterized by the above-mentioned.