JP2003173560A - Optical information recording and reproducing apparatus and method for learning intensity of recording light - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize learning of recording power for determining the recording power which does not make tracking control impossible even when the information recording power is set rather high. <P>SOLUTION: The upper limit of recording power is determined from the amplitude decrement of a wobble signal or the amplitude decrement of a tracking signal relative to the recording power, and the information recording power is set so that recording is not carried out with the recording power of the upper limit or above. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical information recording / reproducing apparatus and a recording light intensity learning method for recording information on an optical recording medium.

[0002]

2. Description of the Related Art Conventionally, CD R has been used as an optical recording medium.
Ewritable media and DVD re-record
For example, “DVD Specification for” is available as an optical information recording / reproducing apparatus and a recording light intensity learning method for recording information on these media.
Re-recordable Disc Part1
PHYSICAL SPECIFICATIONS "are known.

FIG. 9 shows the structure of a DVD Re-recordable, which is an example of a conventional optical information recording / reproducing apparatus. The optical disc 1 is an optical recording medium (DVD-RW medium), and the optical beam is applied to the optical disc 1. Laser diode (hereinafter, LD (Laser Dio)
de 2) mounted on the pick 2, the pick 2
A laser drive circuit 3 for driving the LD in the laser, a laser output control circuit 4 for instructing the laser drive circuit 3 to output a desired laser power, and an initial recording information reading circuit for reading initial recording information recorded on the optical disc 1. 6, a recording power varying circuit 12 for varying the recording power based on the read initial recording information, a modulation degree detecting circuit 7 for detecting the modulation degree of a reproduction signal from the recording pattern recorded on the optical disc 1, A normalization modulation coefficient calculation circuit 8 for calculating a modulation degree normalized by the recording power from the modulation degree detected by the modulation degree detection circuit 7 and the recording power, and the optical disc 1 and the pick from the normalized modulation coefficient and the initial recording information. Optimal recording power calculation circuit 13 for obtaining the optimum recording power in combination with 2, and generates an information recording pattern to be recorded on the optical disc 1. And a recording pattern generation circuit 11.

On the optical disk 1, a recording power learning area 22 for learning the recording power is provided in addition to the data area 21 for recording information as shown in FIG. Has been.

When the optical information recording / reproducing apparatus performs recording power learning, first, the recommended recording power Pi, which is the initial recording information recorded on the optical disc 1, is read by the initial recording information reading circuit 6. This recommended recording power Pi
Is an optimum recording power determined for each optical disk under a constant condition by a standard evaluation device or the like. When information is actually recorded, the optimum recording power is different because the optical sensitivity of the recording medium changes with the change of the LD wavelength due to the temperature condition at the time of recording, the laser transmission efficiency decreases due to dust on the pick 2, and the like. It is necessary to learn the recording power in the power learning area 22 according to the recording state. Further, each optical information recording / reproducing apparatus uses, as an optimum power control coefficient for each optical disc, a multiplication factor ρ (hereinafter,
Optimal power multiplication factor ρ), target normalized modulation coefficient γ targ
It holds et (hereinafter referred to as γt).

Next, the optical pick 2 is moved to the recording power learning area 22 provided on the inner peripheral portion of the optical disc 1, and a random 8-16 encoded data pattern, for example, a random 8-16 encoded data pattern, is used as a recording power learning pattern from the recording pattern generation circuit 11. The recording power variable circuit 12 generates the recording power smaller than a value obtained by dividing the recommended recording power Pi by the optimum power multiplication factor ρ and the power learning start recording power Pw.
0, the power learning recording power is increased by a constant power as shown in FIG. 11, and the recording power of 10 steps (Pw0
~ Pw9), the recording power learning pattern is recorded in the recording power learning area 22.

When the modulation degree is detected, the pick 2 reproduces a reproduced waveform corresponding to each recording power Pw, and the modulation degree detection circuit 7 detects the modulation degree (m0 to m9) at each recording power.

FIG. 12 shows a reproduced waveform when a recording power learning pattern is recorded with a constant recording power. The recording power learning pattern is the same as in the case of recording information.
Since it is recorded in a 16-encoded data pattern, it is composed of recording length marks (hereinafter referred to as marks) of 3T to 11T and 14T based on the recording unit time T and unrecorded length spaces (hereinafter referred to as spaces).

The modulation degree detection circuit 7 uses the amplitude values AH1 and AL1 of the 14T space, which is the longest space, and the 14T mark, which is the longest mark, to calculate the modulation degree m.
To calculate.

[0010]

[Equation 1]

The modulation degree detection circuit 7 obtains the relationship between each recording power and the modulation degree m as shown in FIG. 13 from the recording power and the detected modulation degree m.

The normalized modulation coefficient calculation circuit 8 calculates the relationship between each recording power and the normalized modulation coefficient γ as shown in FIG. 13 by using the equation 2 from the relationship between the recording power and the modulation degree.

[0013]

[Equation 2]

For example, from the modulation degrees m0 and m1 of the recording powers Pw0 and Pw1, the recording power P is calculated by using Equations 3 and 4.
The normalized modulation coefficient γ1 for w01 can be calculated.

[0015]

[Equation 3]

[0016]

[Equation 4]

Next, the optimum recording power calculation circuit 13 obtains the target recording power Pt which is the recording power for realizing the target normalized modulation coefficient γt from the relationship between each recording power and the normalized modulation coefficient γ, and using the formula 5, The optimum recording power Po is calculated and used as the information recording power.

[0018]

[Equation 5]

When information is recorded in the data area 21,
The laser output control circuit 4 operates so as to obtain the information recording power determined by performing the recording power learning, and the information is recorded with the optimum recording power in the power learning state.

[0020]

In this optical information recording / reproducing apparatus, the recommended recording power Pi recorded on the optical disk, the multiplication factor ρ for each optical disk obtained in advance, and the target normalized modulation coefficient γt are also recorded. Since the optimum recording power is calculated for and, the optimum recording power under a certain condition by the standard evaluation machine can be calculated. However, in actual devices, there are factors that reduce the effective recording power, such as mechanical deviations such as tilt and control errors such as defocus. It is necessary to set the information recording power for actually recording information higher than the optimum recording power. There is.

Further, in an optical recording medium, generally, when recording is repeated many times at a recording power higher than the optimum recording power, the recording track groove is deteriorated, and a tracking error signal which is relative position information between the recording track groove and the light beam. The amplitude decreases, and in the worst case, tracking control may be disabled.

It is an object of the present invention to realize recording power learning for determining recording power so that tracking control is not disabled even if the information recording power is set high.

[0023]

In order to solve this problem, the present invention relates to an optical recording medium in which recording track grooves fluctuate in a radial direction at a constant cycle, and a light beam to the optical recording medium. Light irradiating means for irradiating light, light driving means for causing the light irradiating means to emit light with a desired light intensity, and recording output for controlling to record with a desired light intensity in a light intensity learning region in the optical recording medium. Control means, modulation degree detection means for detecting the modulation degree from the amplitude of the reproduced signal, track groove fluctuation signal amplitude detection means for detecting the amplitude of the recording track groove fluctuation signal generated by the periodic fluctuation of the track groove, A light intensity lower limit calculating means for calculating a lower limit light intensity to be recorded on the optical recording medium from the modulation degree of a recording region recorded with a plurality of light intensities in the light intensity learning region, and recorded in the light intensity learning region. Record Light intensity upper limit calculation means for calculating the upper limit light intensity to be recorded on the optical recording medium from the recording track groove fluctuation signal amplitude of the area, and light for recording information on the optical recording medium from the lower limit light intensity and the upper limit light intensity And an information recording light intensity determining means for determining the intensity.

Further, according to the present invention, a light irradiating means for irradiating an optical recording medium having a recording track with a light beam, a light driving means for causing the light irradiating means to emit light with a desired light intensity, and the optical recording medium. A recording output control means for controlling to record with a desired light intensity in a light intensity learning area, a modulation amplitude detecting means for detecting a modulation amplitude of a reproduction signal, and a relative position between the recording track and the light beam. Tracking error signal detection means, light intensity lower limit calculation means for calculating the lower limit light intensity to be recorded on the optical recording medium from the modulation amplitude of a recorded area recorded with a plurality of light intensities in the light intensity learning area, and the light A light intensity upper limit calculating means for calculating an upper limit light intensity to be recorded on the optical recording medium from a tracking error signal amplitude of a recorded region recorded in the intensity learning region, and the lower limit light intensity It is obtained by an information recording light intensity determination means for determining a light intensity of recording information on the optical recording medium than the upper limit intensity.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIGS. 1 to 8.

(Embodiment 1) FIG. 1 shows an embodiment of the optical information recording / reproducing apparatus of the present invention.
Is an optical disc which is an optical recording medium, and has recording track grooves for recording information formed therein. Further, the recording track grooves fluctuate at a constant cycle in the radial direction to generate a recording clock as shown in FIG. The wobble track 19 is formed.

Reference numeral 2 is a pick for mounting an LD for irradiating the optical disc 1 with a light beam by means of light irradiation means, and reference numeral 5 is composed of a laser drive circuit 3 and a laser output control circuit 4 for driving the LD by means of light drive means.

Reference numeral 6 denotes an initial recording information reading circuit for reading the initial recording information recorded on the optical disk 1, 7
Is a modulation degree detecting circuit for detecting the modulation degree from the amplitude of the reproduced signal by the modulation degree detecting means, and 10 is a light intensity lower limit calculating means for normalizing the modulation degree detected by the modulation degree detecting circuit 7 and the recording power from the recording power. It is composed of a normalized modulation coefficient calculation circuit 8 for calculating the modulated degree and a lower limit recording power calculation circuit 9 for calculating the lower limit light intensity for recording information based on the normalized modulation coefficient. A recording power variable circuit that controls the recording power used for recording power learning from the recommended recording power and the recording power increment of the recording information, and 14 detects the amplitude of the track groove fluctuation signal (hereinafter referred to as wobble signal) generated by the wobble track. A wobble signal amplitude detection circuit, which is a track groove fluctuation signal amplitude detection means, is an optical circuit based on a reduction amount of the wobble signal amplitude due to the recording power. An upper limit recording power calculation circuit, which is a light intensity upper limit calculation means for calculating the upper limit light intensity recorded on the recording medium, and 16 is an information recording light for determining the light intensity for recording information based on the lower limit recording power and the upper limit recording power. It is an information recording power determination circuit which is intensity determination means.

FIG. 2 shows an embodiment of the recording light intensity learning method of the present invention.

The optical information recording / reproducing apparatus of the present invention configured as above and the recording light intensity learning of the present invention (hereinafter,
A recording power learning method) will be described with reference to FIGS.

When the optical information recording / reproducing apparatus performs recording power learning, first, the initial recording information reading circuit 6 reads the recommended recording power Pi, which is the initial recording information recorded on the optical disk 1. Further, a multiplication factor ρm (hereinafter, lower limit recording power multiplication factor ρm) and a lower limit normalized modulation coefficient γm for obtaining a lower limit recording power, which is recording information for each optical disc held by each optical information recording / reproducing device,
Wobble signal limit amplitude ratio δ to obtain the upper limit recording power
t, the recording power increment Pd, which is the amount of increasing the recording power at the time of learning the recording power, is taken in.

The optimum recording power multiplication factor ρ and the target normalized modulation coefficient γt described in the prior art are values under a fixed condition in a standard evaluation machine or the like. In some cases, the lower limit recording power multiplication factor ρm and the lower limit normalization modulation coefficient γm of the intensity learning method are equal to the optimum recording power multiplication factor ρ and the target normalization modulation coefficient γt.

Next, the optical pick 2 is moved to the recording power learning area 22 provided on the inner peripheral portion of the optical disc 1, and a random 8-16 encoded data pattern, for example, a random 8-16 encoded data pattern, is used as a recording power learning pattern from the recording pattern generation circuit 11. At the same time, the recording power variable circuit 12 causes the recording power smaller than the value obtained by dividing the lower limit recording power Pi by the lower limit power multiplication factor ρm to start the power learning recording power P.
The recording power learning pattern is recorded as w0 in the recording power learning area 22.

During reproduction of the recording power learning pattern, the modulation degree detection circuit 7 causes the modulation degree m0 at the recording power Pw0.
And the wobble signal amplitude detection circuit 14 detects the wobble signal amplitude w0.

When the light beam 20 passes along the wobble track 19 as shown in FIG. 3, a wobble signal as shown in FIG. 4 is detected. For DVD-RW media,
The frequency of this wobble signal is about 140 KHz at standard speed.
Can be detected with.

The upper limit recording power calculation circuit 15 calculates the wobble signal amplitude ratio δ from the wobble signal amplitude w at the recording power Pw using the equation (6).

[0037]

[Equation 6]

Therefore, the power learning start recording power P
The wobble signal amplitude ratio δ0 at w0 is 1. Further, the upper limit recording power calculation circuit 15 compares the wobble signal amplitude ratio δ with the wobble signal limit amplitude ratio δt, and when the wobble signal amplitude ratio δ is larger than the wobble signal limit amplitude ratio δt,
The recording power variable circuit 12 is instructed to increase the recording power Pw by the recording power increment Pd.

The recording power variable circuit 12 records the recording power learning pattern again in the recording power learning area by the recording power Pw1 obtained by increasing the recording power by the recording power increment Pd from the power learning start recording power Pw0.
The modulation degree m1 and the wobble signal w1 are detected.

The normalized modulation coefficient calculation circuit 8 calculates the normalized modulation coefficient γ1 according to the recording power Pw01 using the equation (3).

The upper limit recording power calculation circuit 15 uses the equation 6 to calculate the wobble signal amplitudes w1 to w at the recording power Pw1.
The wobble signal amplitude ratio δ1 is calculated based on 0. Also,
The upper limit recording power calculation circuit 15 determines the wobble signal amplitude ratio δ1.
And the wobble signal limit amplitude ratio δt are compared, and when the wobble signal amplitude ratio δ1 is larger than the wobble signal limit amplitude ratio δt, the recording power variable circuit 12 is instructed to increase the recording power Pw1 by the recording power increment Pd.

As described above, each time the recording power is increased, the recording power learning pattern is recorded in the recording power learning area, the modulation factor m and the wobble signal amplitude w are detected, and the normalized modulation coefficient γ and the wobble signal amplitude are detected. The ratio δ is obtained and compared with the wobble signal limit amplitude ratio δt.

When the wobble signal amplitude ratio δn when recording with the recording power Pwn becomes equal to or less than the wobble signal limit amplitude ratio δt, the upper limit recording power Pwmax is set to Pwn and the recording in the recording power learning area is completed.

The lower limit recording power calculation circuit 9 obtains the recording power Pm corresponding to the lower limit normalized modulation coefficient γm from the recording power and the normalized modulation coefficient γ, and the lower limit recording of the value obtained by multiplying Pm by the lower limit recording power multiplication factor ρm. The power is Pwmin.
The information recording power determination circuit 16 uses the lower limit recording power Pw.
The recording power between min and the upper limit recording power Pwmax is set as the information recording power P0 for recording information.

As the information recording power P0, for example, the recording power reduction amount due to the tilt residual or the servo control error is measured in advance to the lower limit recording power Pwmin, and the recording power added with the recording power and the upper limit recording power Pwma.
There is a method of comparing with x and determining a recording power having a small value as the information recording power P0.

When information is actually recorded in the data area,
The information recording power determination circuit 16 issues a command to the laser output control circuit 4 so that the information recording power P0 determined by the recording power learning is given, and it becomes possible to record information with an appropriate recording power.

In the above description, the detection of the modulation degree and the calculation of the normalized modulation coefficient are performed after each recording with a predetermined recording power, but if the learning pattern is recorded in a different area for each recording power. It goes without saying that the same result can be obtained even if the detection of the modulation degree and the calculation of the normalized modulation coefficient are collectively performed after the upper limit recording power is determined.

(Second Embodiment) FIG. 6 shows an embodiment of the optical information recording / reproducing apparatus of the present invention. In FIG. 6, the difference from the first embodiment is that a tracking error signal amplitude detection circuit 17 and a tracking error are provided. Signal amplitude detection circuit 17
The upper limit recording power calculation circuit 18 obtains the upper limit recording power from the tracking error signal amplitude detected by the above.

FIG. 7 shows an embodiment of the recording light intensity learning method of the present invention.

The optical information recording / reproducing apparatus of the present invention configured as above and the recording light intensity learning method of the present invention will be described with reference to FIGS. 6 to 8.

When the optical information recording / reproducing apparatus performs recording power learning, first, the recommended recording power Pi, which is the initial recording information recorded on the optical disc 1, is read by the initial recording information reading circuit 6. Further, the lower limit recording power multiplication factor ρm, which is the record information for each optical disc held by each optical information recording / reproducing apparatus, the lower limit normalization modulation coefficient γm,
The tracking error signal limit amplitude ratio τt and the recording power increment Pd are fetched.

Next, the optical pick 2 is moved to the recording power learning area 22 provided on the inner peripheral portion of the optical disc 1, and a random 8-16 encoded data pattern, for example, a random 8-16 encoded data pattern, is used as a recording power learning pattern from the recording pattern generation circuit 11. At the same time, the recording power variable circuit 12 causes the recording power smaller than the value obtained by dividing the lower limit recording power Pi by the lower limit power multiplication factor ρm to start the power learning recording power P.
The recording power learning pattern is recorded as w0 in the recording power learning area.

During reproduction of the recording power learning pattern, the modulation degree detection circuit 7 causes the modulation degree m0 at the recording power Pw0.
To detect.

Next, the tracking control is turned off, and the light beam is moved so as to cross the track recorded with the recording power Pw0. At that time, the tracking error signal amplitude detection circuit 1
The tracking error signal amplitude TE0 is detected by 7.

The upper limit recording power calculation circuit 18 uses the equation 7 to calculate the tracking error signal amplitude TE at the recording power Pw.
The tracking error signal amplitude ratio τ is calculated from

[0056]

[Equation 7]

Therefore, the power learning start recording power P
The tracking error signal amplitude ratio τ0 at w0 is 1.
Further, the upper limit recording power calculation circuit 18 compares the tracking error signal amplitude ratio τ with the tracking error signal limit amplitude ratio τt, and when the tracking error signal amplitude ratio τ is larger than the tracking error signal limit amplitude ratio τt, the recording power variable circuit. 12, the recording power Pw is set to the recording power increment Pd
Command to increase only.

The recording power variable circuit 12 records the recording power learning pattern again in the recording power learning area by the recording power Pw1 obtained by increasing the recording power by the recording power increment Pd from the power learning start recording power Pw0.
The modulation degree m1 and the wobble signal TE1 are detected.

The normalized modulation coefficient calculation circuit 8 calculates the normalized modulation coefficient γ1 according to the recording power Pw01 using the equation (3).

The upper limit recording power calculation circuit 18 uses the equation 7 to calculate the tracking error signal amplitude T at the recording power Pw1.
Tracking error signal amplitude ratio τ based on E1 to TE0
Calculate 1. Further, the upper limit recording power calculation circuit 18 compares the tracking error signal amplitude ratio τ1 with the tracking error signal limit amplitude ratio τt, and when the tracking error signal amplitude ratio τ1 is larger than the tracking error signal limit amplitude ratio τt, the recording power variable circuit. 12, recording power Pw1
To increase the recording power increment Pd.

As described above, each time the recording power is increased, the recording power learning pattern is recorded in the recording power learning area, the modulation degree m and the tracking error signal amplitude TE are detected, and the normalized modulation coefficient γ and the tracking error are detected. The signal amplitude ratio τ is obtained and compared with the tracking error signal limit amplitude ratio τt.

When the tracking error signal amplitude ratio τn when recording with the recording power Pwn becomes equal to or less than the tracking error signal limit amplitude ratio τt, the upper limit recording power Pwm
Setting ax to Pwn completes recording in the recording power learning area.

The lower limit recording power calculation circuit 9 obtains the recording power Pm corresponding to the lower limit normalized modulation coefficient γm from the recording power and the normalized modulation coefficient γ, and lower limit recording the value obtained by multiplying Pm by the lower limit recording power multiplication factor ρm. The power is Pwmin.

The information recording power determination circuit 16 determines the lower limit recording power Pwmin and the upper limit recording power Pwmax.
Information recording power P0 for recording information with recording power during
And set.

As the information recording power P0, for example, the recording power reduction amount due to the tilt residual or the servo control error is measured in advance to the lower limit recording power Pwmin, and the recording power obtained by adding the recording power and the upper limit recording power Pwma.
There is a method of comparing with x and determining a recording power having a small value as the information recording power P0.

When information is actually recorded in the data area,
The information recording power determination circuit 16 issues a command to the laser output control circuit 4 so that the information recording power P0 determined by the recording power learning is given, and it becomes possible to record information with an appropriate recording power.

In the above description, the detection of the degree of modulation and the calculation of the normalized modulation coefficient are performed after each recording with a predetermined recording power, but if the learning pattern is recorded in a different area for each recording power. It goes without saying that the same result can be obtained even if the detection of the modulation degree and the calculation of the normalized modulation coefficient are collectively performed after the upper limit recording power is determined.

[0068]

As described above, according to the present invention, the lower limit recording power and the upper limit recording power are obtained in the recording light intensity learning for determining the information recording power for recording information, and the recording power is determined between them, so the recording is performed. It is possible to obtain the effect that the recording power for recording information can always be optimized, without the deterioration of the recording track groove caused by performing overwriting recording several times due to too high power.

[Brief description of drawings]

FIG. 1 is a block diagram showing an optical information recording / reproducing apparatus according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of a recording light intensity learning method according to the first embodiment of the present invention.

FIG. 3 is an explanatory diagram showing periodic fluctuations of recording track grooves on an optical disc.

FIG. 4 is an explanatory diagram showing a wobble signal detected by a periodic fluctuation of a recording track groove on an optical disc.

FIG. 5 is an explanatory diagram showing the relationship between the wobble signal amplitude ratio, the normalized modulation coefficient, and the recording power according to the first embodiment of the present invention.

FIG. 6 is a block diagram showing an optical information recording / reproducing apparatus according to a second embodiment of the present invention.

FIG. 7 is an explanatory diagram of a recording light intensity learning method according to a second embodiment of the present invention.

FIG. 8 is an explanatory diagram showing the relationship between the tracking error signal amplitude ratio, the normalized modulation coefficient, and the recording power according to the second embodiment of the present invention.

FIG. 9 is a block diagram showing a conventional optical information recording / reproducing apparatus.

FIG. 10 is an explanatory diagram showing a recording power learning area of an optical disc.

FIG. 11 is an explanatory diagram showing recording power during recording power learning according to a conventional technique.

FIG. 12 is an explanatory diagram of asymmetry of reproduced waveform.

FIG. 13 is an explanatory diagram showing the relationship between the recording power and the degree of modulation of the reproduction signal and the normalized modulation coefficient.

[Explanation of symbols]

1 optical disc 2 picks 3 Laser drive circuit 4 Laser output control circuit 5 Optical drive means 6 Initial record information reading circuit 7 Modulation degree detection circuit 8 Normalized modulation coefficient calculation circuit 9 Lower limit recording power calculation circuit 10 Light intensity lower limit calculation means 11 Recording pattern generation circuit 12 Recording power variable circuit 13 Optimal recording power calculation circuit 14 Wobble signal amplitude detection circuit 15 Upper limit recording power calculation circuit 16 Information recording power determination circuit 17 Tracking error signal amplitude detection circuit 18 Upper limit recording power calculation circuit 19 wobble truck 20 light beams 21 data area 22 Recording power learning area

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kai             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. F-term (reference) 5D029 WA02                 5D090 AA01 BB04 CC01 DD03 EE01                       GG02 HH01 JJ12 KK03                 5D119 AA23 AA31 BA01 BB02 BB03                       DA01 EA02 HA16 HA19 HA23                       HA45                 5D789 AA23 AA31 BA01 BB02 BB03                       DA01 EA02 HA16 HA19 HA23                       HA45

Claims (12)

[Claims] 1. An optical recording medium in which a recording track groove fluctuates in a radial direction at a constant cycle, a light irradiating means for irradiating the optical recording medium with a light beam, and a desired light irradiating means for the light irradiating means. Light driving means for emitting light at a light intensity, recording output control means for controlling to record at a desired light intensity in a light intensity learning area in the optical recording medium, and modulation degree for detecting a modulation degree from the amplitude of a reproduction signal. Detecting means, track groove fluctuation signal amplitude detecting means for detecting the amplitude of the track groove fluctuation signal generated by the periodic fluctuation of the recording track groove, and recorded data recorded at a plurality of light intensities in the light intensity learning area. The optical intensity lower limit calculating means for calculating the lower limit light intensity to be recorded on the optical recording medium from the modulation degree of the region, and the optical intensity from the track groove fluctuation signal amplitude of the recorded region recorded in the light intensity learning region. It comprises a light intensity upper limit calculation means for calculating the upper limit light intensity recorded on the recording medium, and an information recording light intensity determination means for determining the light intensity for recording information on the optical recording medium from the lower limit light intensity and the upper limit light intensity. Optical information recording / reproducing device. 2. The recording output control means controls to gradually increase the light intensity from a light intensity learning initial intensity which is preset for each optical recording medium having different characteristics, and the light intensity upper limit calculating means controls the light intensity. 2. The optical information recording / reproducing apparatus according to claim 1, wherein when the intensity reaches a desired upper limit intensity, the light intensity is controlled so as not to increase beyond that. 3. The light intensity upper limit calculation means is a track groove fluctuation signal amplitude decrease quantity calculating means for obtaining a decrease quantity of the track groove fluctuation signal amplitude at the time of reproducing a recorded track, and the track groove fluctuation signal amplitude decrease quantity is predetermined. 2. The optical information recording / reproducing apparatus according to claim 1, further comprising an upper limit light intensity determining means for obtaining a recording light intensity having a value. 4. The information recording light intensity determination means compares the added light intensity and the upper limit light intensity with a light intensity addition means for obtaining the added light intensity obtained by adding a fixed value to the lower limit light intensity, and determines a small light intensity. The optical information recording / reproducing apparatus according to claim 1, further comprising a light intensity selecting means for setting a light intensity for recording information. 5. A light irradiating means for irradiating an optical recording medium having a recording track with a light beam, a light driving means for causing the light irradiating means to emit light with a desired light intensity, and a light intensity in the optical recording medium. Recording output control means for controlling to record with a desired light intensity in a learning area, modulation amplitude detection means for detecting the modulation degree from the amplitude of the reproduction signal, and tracking error for detecting the relative position of the recording track and the light beam. A signal detection unit, a light intensity lower limit calculation unit that calculates a lower limit light intensity to be recorded on the optical recording medium from the modulation degree of a recorded region recorded with a plurality of light intensities in the light intensity learning region, and the light intensity. A light intensity upper limit calculating means for calculating the upper limit light intensity recorded on the optical recording medium from the tracking error signal amplitude of the recorded region recorded in the learning region, and the lower limit light intensity and the upper limit light intensity. An optical information recording / reproducing apparatus comprising information recording light intensity determining means for determining the light intensity for recording information on the optical recording medium based on the degree. 6. The recording output control means controls to gradually increase the light intensity from a light intensity learning initial intensity preset for each optical recording medium having different characteristics, and the light intensity upper limit calculating means controls the light intensity. 6. The optical information recording / reproducing apparatus according to claim 5, wherein when the intensity reaches a desired upper limit intensity, the light intensity is controlled so as not to increase beyond that. 7. The light intensity upper limit calculation means is a tracking error signal amplitude reduction amount calculation means for obtaining a reduction amount of a tracking error signal amplitude of a recorded track, and the recording light whose tracking error signal amplitude reduction amount is a predetermined value. 6. The optical information recording / reproducing apparatus according to claim 5, comprising an upper limit light intensity determining means for obtaining intensity. 8. The information recording light intensity determination means compares the added light intensity and the upper limit light intensity with a light intensity addition means for obtaining an added light intensity obtained by adding a fixed value to the lower limit light intensity, and determines a small light intensity. 6. The optical information recording / reproducing apparatus according to claim 5, comprising a light intensity selecting means for setting a light intensity for recording information. 9. A method for learning the recording light intensity of an optical information recording / reproducing apparatus for recording information by irradiating a light beam on an optical recording medium in which a recording track groove fluctuates in a radial direction at a constant cycle. In, the recording initial information recorded in the optical recording medium is taken in, the light intensity lower than the recording initial information is set as the light intensity learning start light intensity, and the light intensity learning including the substantially longest pattern of the recording information pattern in the light intensity learning area. The pattern is recorded / reproduced, the modulation degree of the reproduction signal and the amplitude of the track groove fluctuation signal, which is the periodic fluctuation information of the recording track groove, are detected, and the light intensity learning of the track groove fluctuation signal amplitude is started. If the amount of decrease in the track groove fluctuation signal amplitude has not reached the prescribed value, the optical intensity is increased again by a certain amount and recording / reproduction is performed to determine the degree of modulation and track groove fluctuation. By repeating the signal amplitude detection, obtaining the track fluctuation signal amplitude decrease amount, and comparing the track fluctuation signal amplitude decrease amount with a predetermined value repeatedly, and when the track groove fluctuation signal amplitude decrease amount reaches the predetermined value, the track The light intensity at which the variation signal amplitude reduction amount reaches a predetermined value is set as the upper limit recording light intensity, and the lower limit recording light intensity is obtained from the modulation degree change amount with respect to the recording light intensity change. A recording light intensity learning method for determining the information recording light intensity to be recorded on an optical recording medium from the intensity. 10. The recording light intensity learning method according to claim 9, wherein the information recording light intensity is the light intensity obtained by adding a certain amount to the lower limit recording light intensity or the upper limit recording light intensity, whichever is lower. 11. A method of learning the recording light intensity of an optical information recording / reproducing apparatus for recording information by irradiating an optical recording medium having a recording track groove with a light beam, wherein the optical recording medium is recorded on the optical recording medium. Captured recording initial information is taken, the light intensity lower than the initial recording information is used as the light intensity learning start light intensity, the light intensity learning pattern including the substantially longest pattern of the recorded information pattern is recorded in the light intensity learning area, and the learning pattern is reproduced. The amplitude of the tracking error signal that is the relative position information between the recording track groove and the light beam is detected with the tracking control turned off, and the optical intensity of the tracking error signal amplitude is detected. The tracking error signal amplitude decrease amount is calculated for the learning start light intensity, and the tracking error signal amplitude decrease amount does not reach the predetermined value. In this case, the learning pattern is recorded again by increasing the light intensity by a certain amount, the modulation factor of the reproduction signal and the tracking error signal amplitude are detected, the tracking error signal amplitude decrease amount is calculated, and the tracking error signal amplitude decrease amount is calculated. When the tracking error signal amplitude decrease amount reaches a predetermined value by repeating comparison with a predetermined value, the light intensity at which the tracking error signal amplitude decrease amount reaches a predetermined value is set as the upper limit recording light intensity, and A recording light intensity learning method for obtaining a lower limit recording light intensity from an amount of change in modulation degree with respect to a recording light intensity change, and determining an information recording light intensity to be recorded on an optical recording medium from the lower limit recording light intensity and the upper limit recording light intensity. 12. The recording light intensity learning method according to claim 11, wherein the information recording light intensity is the light intensity obtained by adding a fixed amount to the lower limit recording light intensity or the upper limit recording light intensity, whichever is lower.