JP2004054980A - Information recording device, information recording method, program, computer readable recording medium and information processor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress generation of failures in which a maximum output of a laser light source is exceeded by the adverse effect of power correction caused by running OPC, to record information employing a maximum recording speed and an optimum recording power without deteriorating the light source and to realize a high recording quality. <P>SOLUTION: A CPU compares a prescribed recording condition target value with a value corresponding to the reproducing signals from an optical disk during a recording of information on the disk by a running OPC in the S2 and the recording power is corrected at all times in accordance with the comparison result. When it is judged that the corrected recording power exceeds a limit value in the S3, the recording is temporarily stopped in the S4, a resetting is made to one step lower recording linear velocity from the recording linear velocity at the time of the temporary stop in the S5, recording power at the recording linear velocity is determined by the OPC in the S6 and a recording is restarted using the recording power without interrupting continuous information at the temporarily stopped position in the S7. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an information recording device such as an MO drive, a CD-R / RW drive, a CD + R / RW drive, a DVD-R / RW drive, a DVD + R / RW drive, an MO disk, a CD-R / RW disk, and a CD + R / RW. Information recording method for recording information on an information recording medium such as a disk, DVD-RAM, DVD-R / RW disk, DVD + R / RW disk, and a program for causing a computer to execute a procedure for recording information on the information recording medium The present invention relates to a computer-readable recording medium on which the program is recorded, and an information processing apparatus such as a personal computer for recording information on the information recording medium by the information recording apparatus.
[0002]
[Prior art]
For example, in an information recording apparatus that records information on an information recording medium such as a CD-R (Compact Disc Recordable) disk (for example, see Japanese Patent Application Laid-Open No. H11-296858), data is always read from the information recording medium at a constant speed. For this reason, a constant linear velocity (CLV) recording method in which information is recorded at a constant linear velocity by changing the number of rotations is usually adopted. In the case of the CLV method, since the relative speed between the information recording medium and the laser beam is always constant, it is necessary to change the recording conditions such as the recording power and the recording pulse width once over the entire recording surface of the information recording medium once it is optimally determined. There is no. For this reason, there is no problem in that test writing is normally performed by varying the recording power in a specific area at the innermost periphery, and the entire recording is performed at the same linear velocity using the optimum recording power determined by the test writing.
[0003]
However, in the CLV method, it is necessary to increase the number of rotations toward the inner peripheral portion of the information recording medium. Therefore, it becomes difficult to rotate the rotation as the rotation speed increases, and an expensive motor capable of rotating at high speed is employed. This increases the motor cost, increases noise and vibration due to high-speed rotation, and makes it difficult to design other servo systems. Therefore, there is a Constant Angular Velocity (CAV) method in which information is recorded by constantly rotating the information recording medium at a constant rotational speed. In this CAV method, the linear velocity naturally becomes higher as it goes to the outer periphery. . In addition, since the linear velocity becomes higher as it goes to the outer periphery, the information recording medium is used as a method to prevent the rotation speed from increasing too much at the outer periphery instead of increasing the rotation speed too much at the inner periphery. A zone is divided at an appropriate radial position from the periphery, and information is recorded in the zone by the CLV method, and information is recorded by changing the linear velocity to a higher linear velocity in the zone on the outer peripheral side (Zone CLV: ZCLV method). ).
[0004]
Regardless of the CAV method or the ZCLV method as described above, there are cases where recording is performed at a linear velocity different from the linear velocity in the inner peripheral area where test writing is performed. In that case, the problem is how to determine the recording power and other recording conditions.
Therefore, conventionally, an information recording apparatus has been proposed in which a predetermined operation is performed on a test writing result to calculate recording conditions of different linear velocities.
In addition, during recording of information on the information recording medium, a predetermined recording state target value is compared with a value corresponding to a reproduction signal from the information recording medium, and the recording power is modified according to the comparison result. Devices have also been proposed. In this method, a so-called trial writing method is referred to as OPC (Optimum Power Control). On the other hand, the recording power is corrected in real time during recording of information, so that the method is referred to as running OPC (Running OPC).
This running OPC makes it possible to record information by appropriately modifying the recording power to an optimum value so as to suppress fluctuations in recording sensitivity due to fluctuations in the media sensitivity during recording and fluctuations in the wavelength of the laser light source.
[0005]
[Problems to be solved by the invention]
However, in the above-described conventional information recording apparatus, if the recording power is corrected during recording by the running OPC, the running OPC may vary depending on conditions such as the information recording medium, the recording speed, the information recording apparatus, and the external temperature during information recording. If the amount of power increase due to is large, there is a problem that the maximum output power of the laser light source is exceeded. In such a case, it is necessary to reduce the recording power in order not to deteriorate the laser light source, but it is also required to perform recording at a higher speed.
When the fluctuation of the recording power due to the running OPC is large, the amount of power required for recording may be different due to a change in the wavelength of the laser light source or the like. Therefore, it is important to consider not to affect the recording quality when the recording speed is changed. This is particularly important for an information recording apparatus such as a DVD + R disc that records information at a short wavelength.
[0006]
Further, in the zone CLV system, it is necessary to set the recording power of the next zone in consideration of the correction of the running OPC at the change of the zone. May exceed the maximum output of the laser light source.
SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and prevents a problem that the maximum output of a laser light source is exceeded due to the influence of power correction by running OPC. It is an object of the present invention to record information at the fastest recording speed and an optimum recording power without deteriorating a light source, thereby realizing high recording quality.
[0007]
[Means for Solving the Problems]
The present invention provides the following information recording devices (1) to (7) to achieve the above object.
(1) An information recording apparatus for writing information at a substantially constant linear density in a circumferential direction of a disk-shaped recording medium, wherein test writing is performed on a predetermined area of the disk-shaped recording medium at a predetermined basic linear velocity. Trial writing means for determining the optimum recording power at the basic linear velocity, and comparing a predetermined recording state target value with a value corresponding to a reproduction signal from the disc-shaped recording medium while recording information on the disc-shaped recording medium. Recording power correction means for correcting the recording power at any time according to the comparison result, recording stop means for temporarily stopping recording when the recording power exceeds a predetermined maximum output value by the recording power correction means, A recording linear velocity resetting means for lowering and resetting the recording linear velocity from the recording linear velocity at the time of temporary stop by the stopping means to a predetermined recording linear velocity, and resetting by the recording linear velocity resetting means; After the recording power at the recording linear velocity was determined by the test writing means, the information recording apparatus provided with a resume recording resuming means recording without the once continuous information on stop point is interrupted.
[0008]
(2) An information recording apparatus for writing information at a substantially constant linear density in a circumferential direction of a disk-shaped recording medium, wherein test writing is performed at a predetermined basic linear velocity on a predetermined area of the disk-shaped recording medium. Trial writing means for determining the optimum recording power at the basic linear velocity, and comparing a predetermined recording state target value with a value corresponding to a reproduction signal from the disc-shaped recording medium while recording information on the disc-shaped recording medium. Recording power correction means for correcting the recording power at any time according to the result of the comparison, and when the recording power exceeds a predetermined maximum output value by the recording power correction means, temporarily stop recording and after a predetermined time interval, A recording stop means for repeating a process of resuming recording at a recording linear velocity at the time of a stop a predetermined number of times; A recording linear velocity resetting means for lowering and resetting the recording linear velocity from the recording linear velocity at the time of temporary stop by the recording stop means to a predetermined recording linear velocity when exceeding a predetermined maximum output value, and the recording linear velocity resetting means; An information recording apparatus comprising: a recording restart means for determining the recording power at the reset recording linear velocity by the test writing means and then restarting the recording without interruption of the continuous information at the temporary stop.
[0009]
(3) An information recording apparatus for writing information at a substantially constant linear density in a circumferential direction of a disk-shaped recording medium, wherein test writing is performed at a predetermined basic linear velocity on a predetermined area of the disk-shaped recording medium. Trial writing means for determining the optimum recording power at the basic linear velocity, and comparing a predetermined recording state target value with a value corresponding to a reproduction signal from the disc-shaped recording medium while recording information on the disc-shaped recording medium. Recording power correction means for correcting the recording power at any time in accordance with the result of the comparison, and temporarily stopping the recording when the correction amount of the recording power by the recording power correction means exceeds a predetermined amount, and performing the test by the test writing means. An information recording apparatus comprising a recording restart means for setting recording power obtained by re-executing writing and restarting recording.
[0010]
(4) In the information recording apparatus according to any one of (1) to (3), test writing is performed at a linear speed at which the recording is restarted in a predetermined area provided on an outer peripheral portion of the disc-shaped recording medium. Information recording device provided with means for performing the following.
(5) In the information recording apparatus according to any one of (1) to (4), the recording power is applied to the recording power at the start of recording which is set by estimating from the result of trial writing by the trial writing means before the start of recording. An information recording apparatus wherein the allowable value of the recording power corrected during recording by the recording power correcting means is larger by a predetermined value than the allowable value of the maximum recording power.
[0011]
(6) An information recording apparatus for writing information at a substantially constant linear density in a circumferential direction of the disk-shaped recording medium at a predetermined linear velocity different for each of a plurality of recording zones provided in a radial direction of the disk-shaped recording medium. Test writing means for performing test writing at a predetermined basic linear velocity on a predetermined area of the disk-shaped recording medium to determine an optimum recording power at the basic linear velocity; and recording information on the disk-shaped recording medium during recording. A recording power correction means for comparing a predetermined recording state target value with a value corresponding to a reproduction signal from the disk-shaped recording medium and correcting a recording power as needed according to the comparison result; and a switching point of the recording zone. In the recording power of the new recording zone with respect to the recording power immediately before the switching corrected by the recording power correcting means during the recording to the immediately preceding recording zone. Means for estimating the recording power from the result of performing the recording power determination processing of the above, and when it is determined that the recording power exceeds a predetermined maximum recording power, means for continuing recording without stopping while maintaining the immediately preceding recording speed Information recording device.
[0012]
(7) An information recording apparatus which writes information at a substantially constant linear density in a circumferential direction of the disk-shaped recording medium at a predetermined linear velocity different for each of a plurality of recording zones provided in a radial direction of the disk-shaped recording medium. Test writing means for performing test writing at a predetermined basic linear velocity on a predetermined area of the disk-shaped recording medium to determine an optimum recording power at the basic linear velocity; and recording information on the disk-shaped recording medium during recording. A recording power correction means for comparing a predetermined recording state target value with a value corresponding to a reproduction signal from the disk-shaped recording medium and correcting a recording power as needed according to the comparison result; and a switching point of the recording zone. The recording is stopped at the recording zone, and the recording power immediately before the switching corrected by the recording power correcting means during the recording to the immediately preceding recording zone as the recording power of the new recording zone. The recording power is estimated from the result of performing the predetermined recording power determination processing on the recording medium, and when it is determined that the recording power exceeds the predetermined maximum recording power, the test writing is performed again by the test writing means. An information recording apparatus comprising a recording restart means for setting recording power and restarting recording.
[0013]
Further, the following information recording methods (8) to (14) are also provided.
(8) An information recording method for writing information at a substantially constant linear density in a circumferential direction of a disk-shaped recording medium, wherein test writing is performed at a predetermined basic linear velocity on a predetermined area of the disk-shaped recording medium. The optimum recording power at the basic linear velocity is determined, and a predetermined recording state target value is compared with a value corresponding to a reproduction signal from the disc-shaped recording medium while information is recorded on the disc-shaped recording medium. The recording power is corrected as needed according to the result, and when the corrected recording power exceeds a predetermined maximum output value, the recording is temporarily stopped, and the recording linear velocity at the time of the temporary stop is reduced to a predetermined recording linear velocity. An information recording method of resetting, determining the recording power at the reset recording linear velocity by the test writing, and restarting the recording without interruption of the continuous information at the temporarily stopped point.
[0014]
(9) An information recording method for writing information at a substantially constant linear density in a circumferential direction of a disk-shaped recording medium, wherein test writing is performed at a predetermined basic linear velocity on a predetermined area of the disk-shaped recording medium. The optimum recording power at the basic linear velocity is determined, and a predetermined recording state target value is compared with a value corresponding to a reproduction signal from the disc-shaped recording medium while information is recorded on the disc-shaped recording medium. The recording power is corrected at any time according to the result, and when the corrected recording power exceeds the predetermined maximum output value, the recording is temporarily stopped, after a predetermined time interval, the recording is resumed at the recording linear velocity at the time of the stop. If the recording power exceeds the predetermined maximum output value even after the above processing is repeated a predetermined number of times, the recording linear velocity at the time of the temporary stop is reduced to a predetermined recording linear velocity and re-started. After constant, and the recording power in the re-set recording linear velocity determined by the above test writing resumes the information recording method of recording without the once continuous information on stop point is interrupted.
[0015]
(10) An information recording method for writing information at a substantially constant linear density in a circumferential direction of a disk-shaped recording medium, wherein test writing is performed at a predetermined basic linear velocity on a predetermined area of the disk-shaped recording medium. The optimum recording power at the basic linear velocity is determined, and a predetermined recording state target value is compared with a value corresponding to a reproduction signal from the disc-shaped recording medium while information is recorded on the disc-shaped recording medium. The recording power is corrected at any time according to the result, and when the corrected amount of the corrected recording power exceeds a predetermined amount, the recording is temporarily stopped, and the recording power obtained by re-executing the test writing by the test writing is set. Information recording method to restart recording.
[0016]
(11) In the information recording method according to any one of (8) to (10), test writing is performed at a linear speed at which the recording is restarted in a predetermined area provided on an outer peripheral portion of the disc-shaped recording medium. Information recording method.
(12) In the information recording method according to any one of the above (8) to (11), the method is applied to a recording power at the start of recording which is set by estimating from a result of the trial writing by the trial writing before the recording starts. An information recording method in which the allowable value of the recording power corrected during recording is set to be larger than the allowable value of the maximum recording power by a predetermined value.
[0017]
(13) An information recording method for writing information at a substantially constant linear density in a circumferential direction of the disk-shaped recording medium at a predetermined linear velocity different for each of a plurality of recording zones provided in a radial direction of the disk-shaped recording medium. Then, test writing is performed at a predetermined basic linear velocity in a predetermined area of the disk-shaped recording medium to determine an optimum recording power at the basic linear velocity, and a predetermined recording state is determined while information is being recorded on the disk-shaped recording medium. The target value is compared with a value corresponding to the reproduction signal from the disc-shaped recording medium, and the recording power is corrected as needed according to the comparison result, and as a recording power of a new recording zone at the switching point of the recording zone. During the recording up to the immediately preceding recording zone, the recording power is estimated from the result of performing a predetermined recording power determination process on the corrected recording power immediately before the switching, and the If the recording power is determined to exceed the predetermined maximum recording power, the information recording method of continuously recorded without stopping while maintaining the immediately preceding recording speed.
[0018]
(14) An information recording method for writing information at a substantially constant linear density in a circumferential direction of the disk-shaped recording medium at a predetermined linear velocity different for each of a plurality of recording zones provided in a radial direction of the disk-shaped recording medium. Then, test writing is performed at a predetermined basic linear velocity in a predetermined area of the disk-shaped recording medium to determine an optimum recording power at the basic linear velocity, and a predetermined recording state is determined while information is being recorded on the disk-shaped recording medium. The target value is compared with a value corresponding to a reproduction signal from the disc-shaped recording medium, the recording power is corrected as needed according to the comparison result, recording is stopped at the switching point of the recording zone, and new recording is performed. As the recording power of the zone, the recording power is determined from the result of performing a predetermined recording power determination process on the corrected recording power immediately before switching during recording to the immediately preceding recording zone. Estimated, if the recording power is determined to exceed the predetermined maximum recording power is resumed information recording method for recording by setting the recording power obtained by re-executing the test writing by the test writing.
[0019]
Further, the following programs (15) to (19) are also provided.
(15) A procedure for writing information to the computer at a substantially constant linear density in the circumferential direction of the disk-shaped recording medium, and performing a trial writing at a predetermined basic linear velocity in a predetermined area of the disk-shaped recording medium to perform the basic writing. A test writing procedure for determining an optimum recording power at a linear velocity, and comparing a predetermined recording state target value with a value corresponding to a reproduction signal from the disc-shaped recording medium while recording information on the disc-shaped recording medium, A recording power correction procedure for correcting the recording power at any time according to the comparison result, a recording stop procedure for temporarily stopping recording when the recording power exceeds a predetermined maximum output value by the recording power correction procedure, and a recording stop The recording linear velocity reset procedure that lowers the recording linear velocity from the paused recording linear velocity to a predetermined recording linear velocity according to the procedure and resets it, and the recording linear velocity reset procedure resets it After the recording power at the recording linear velocity was determined by the test writing procedure, a program for executing the resume recording restart procedure records without the once continuous information on stop point is interrupted.
[0020]
(16) A procedure for writing information in a computer at a substantially constant linear density in a circumferential direction of the disk-shaped recording medium, and a trial writing at a predetermined basic linear velocity in a predetermined area of the disk-shaped recording medium to perform the basic writing. A test writing procedure for determining an optimum recording power at a linear velocity, and comparing a predetermined recording state target value with a value corresponding to a reproduction signal from the disc-shaped recording medium while recording information on the disc-shaped recording medium, A recording power correction procedure for correcting the recording power at any time according to the result of the comparison, and temporarily stopping the recording when the recording power exceeds a predetermined maximum output value by the recording power correction procedure, and once after a predetermined time interval, A recording stop procedure that repeats a process of restarting recording at the recording linear velocity at the time of stopping a predetermined number of times, and a recording process that repeats the above process a predetermined number of times by the recording stop procedure. If the value exceeds the predetermined maximum output value, the recording linear velocity reset procedure for lowering and resetting the recording linear velocity from the paused recording linear velocity to the predetermined recording linear velocity according to the above recording stop procedure, and resetting the recording linear velocity A program for executing a recording restart procedure in which the recording power at the recording linear velocity reset by the procedure is determined by the test writing procedure, and then the recording is resumed without interruption of the continuous information at the temporary stop.
[0021]
(17) A procedure for writing information in a computer at a substantially constant linear density in a circumferential direction of a disk-shaped recording medium, and a trial writing at a predetermined basic linear velocity in a predetermined area of the disk-shaped recording medium to perform the basic writing. A test writing procedure for determining an optimum recording power at a linear velocity, and comparing a predetermined recording state target value with a value corresponding to a reproduction signal from the disc-shaped recording medium while recording information on the disc-shaped recording medium, A recording power correction procedure for correcting the recording power at any time according to the result of the comparison, and when the amount of correction of the recording power by the recording power correction procedure exceeds a predetermined amount, the recording is temporarily stopped, and the test writing is performed by the test writing procedure. For executing a recording restart procedure for setting the recording power obtained by re-executing and restarting recording.
[0022]
(18) a step of writing information into the computer at a substantially constant linear density in a circumferential direction of the disk-shaped recording medium at a predetermined linear velocity different for each of a plurality of recording zones provided in a radial direction of the disk-shaped recording medium; A test writing procedure for performing test writing on a predetermined area of the disk-shaped recording medium at a predetermined basic linear velocity to determine an optimum recording power at the basic linear velocity; and performing a predetermined writing while recording information on the disk-shaped recording medium. A recording power correction procedure for comparing a recording state target value and a value corresponding to a reproduction signal from the disk-shaped recording medium and correcting a recording power at any time according to the comparison result, and at a switching point of the recording zone. As the recording power of the new recording zone, the recording power immediately before the switching, which has been corrected by the above-described recording power correction procedure during recording to the immediately preceding recording zone, A procedure for estimating the recording power from the result of performing the predetermined recording power determination processing, and determining that the recording power exceeds the predetermined maximum recording power, continues the recording without stopping without maintaining the immediately preceding recording speed. The program to be executed.
[0023]
(19) A procedure for writing information to a computer at a substantially constant linear density in a circumferential direction of the disk-shaped recording medium at a predetermined linear velocity different for each of a plurality of recording zones provided in a radial direction of the disk-shaped recording medium. A test writing procedure for performing test writing on a predetermined area of the disk-shaped recording medium at a predetermined basic linear velocity to determine an optimum recording power at the basic linear velocity; and performing a predetermined writing while recording information on the disk-shaped recording medium. A recording power correction procedure for comparing a recording state target value and a value corresponding to a reproduction signal from the disk-shaped recording medium and correcting a recording power at any time according to the comparison result, and at a switching point of the recording zone. Stop the recording, and change the recording power immediately before the switching corrected by the above recording power correction procedure during the recording to the immediately preceding recording zone as the recording power of the new recording zone. The recording power is estimated from the result of performing the predetermined recording power determination processing on the power, and when it is determined that the recording power exceeds the predetermined maximum recording power, the test writing is performed again by the above-described test writing procedure. A program for executing a recording restart procedure for setting recording power and restarting recording.
[0024]
Furthermore, the following computer-readable recording media (20) to (24) are also provided.
(20) A procedure for writing information to the computer at a substantially constant linear density in the circumferential direction of the disk-shaped recording medium, and performing a trial write at a predetermined basic linear velocity in a predetermined area of the disk-shaped recording medium to perform the basic writing. A test writing procedure for determining an optimum recording power at a linear velocity, and comparing a predetermined recording state target value with a value corresponding to a reproduction signal from the disc-shaped recording medium while recording information on the disc-shaped recording medium, A recording power correction procedure for correcting the recording power at any time according to the comparison result, a recording stop procedure for temporarily stopping recording when the recording power exceeds a predetermined maximum output value by the recording power correction procedure, and a recording stop The recording linear velocity reset procedure that lowers the recording linear velocity from the paused recording linear velocity to a predetermined recording linear velocity according to the procedure and resets it, and the recording linear velocity reset procedure resets it After the recording power at the determined recording linear velocity is determined by the above-described test writing procedure, a computer-readable recording of a program for executing a recording restart procedure for restarting recording without interruption of the continuous information at the temporarily stopped location is possible. recoding media.
[0025]
(21) A procedure for writing information to a computer at a substantially constant linear density in the circumferential direction of the disk-shaped recording medium, and performing a trial write at a predetermined basic linear velocity on a predetermined area of the disk-shaped recording medium to perform the basic writing. A test writing procedure for determining an optimum recording power at a linear velocity, and comparing a predetermined recording state target value with a value corresponding to a reproduction signal from the disc-shaped recording medium while recording information on the disc-shaped recording medium, A recording power correction procedure for correcting the recording power at any time according to the result of the comparison, and temporarily stopping the recording when the recording power exceeds a predetermined maximum output value by the recording power correction procedure, and once after a predetermined time interval, A recording stop procedure that repeats a process of restarting recording at the recording linear velocity at the time of stopping a predetermined number of times, and a recording process that repeats the above process a predetermined number of times by the recording stop procedure. If the value exceeds the predetermined maximum output value, the recording linear velocity reset procedure for lowering and resetting the recording linear velocity from the paused recording linear velocity to the predetermined recording linear velocity according to the above recording stop procedure, and resetting the recording linear velocity After the recording power at the recording linear velocity reset by the procedure was determined by the test writing procedure, a program for executing the recording restart procedure for restarting the recording without interruption of the continuous information at the temporarily stopped position was recorded. Computer-readable recording medium.
[0026]
(22) A procedure for writing information to the computer at a substantially constant linear density in the circumferential direction of the disk-shaped recording medium, and performing a trial write at a predetermined basic linear velocity in a predetermined area of the disk-shaped recording medium to perform the basic writing. A test writing procedure for determining an optimum recording power at a linear velocity, and comparing a predetermined recording state target value with a value corresponding to a reproduction signal from the disc-shaped recording medium while recording information on the disc-shaped recording medium, A recording power correction procedure for correcting the recording power at any time according to the result of the comparison, and when the amount of correction of the recording power by the recording power correction procedure exceeds a predetermined amount, the recording is temporarily stopped, and the test writing is performed by the test writing procedure. Computer-readable recording medium on which a program for executing a recording restart procedure for setting a recording power obtained by re-executing and restarting recording is executed.
[0027]
(23) a step of writing information into the computer at a substantially constant linear density in a circumferential direction of the disk-shaped recording medium at a predetermined linear velocity different for each of a plurality of recording zones provided in a radial direction of the disk-shaped recording medium; A test writing procedure for performing test writing on a predetermined area of the disk-shaped recording medium at a predetermined basic linear velocity to determine an optimum recording power at the basic linear velocity; and performing a predetermined writing while recording information on the disk-shaped recording medium. A recording power correction procedure for comparing a recording state target value and a value corresponding to a reproduction signal from the disk-shaped recording medium and correcting a recording power at any time according to the comparison result, and at a switching point of the recording zone. As the recording power of the new recording zone, the recording power immediately before the switching, which has been corrected by the above-described recording power correction procedure during recording to the immediately preceding recording zone, A procedure for estimating the recording power from the result of performing the predetermined recording power determination processing, and determining that the recording power exceeds the predetermined maximum recording power, continues the recording without stopping without maintaining the immediately preceding recording speed. A computer-readable recording medium recording a program to be executed.
[0028]
(24) a step of writing information in the computer at a substantially constant linear density in a circumferential direction of the disk-shaped recording medium at a predetermined linear velocity different for each of a plurality of recording zones provided in a radial direction of the disk-shaped recording medium; A test writing procedure for performing test writing on a predetermined area of the disk-shaped recording medium at a predetermined basic linear velocity to determine an optimum recording power at the basic linear velocity; and performing a predetermined writing while recording information on the disk-shaped recording medium. A recording power correction procedure for comparing a recording state target value and a value corresponding to a reproduction signal from the disk-shaped recording medium and correcting a recording power at any time according to the comparison result, and at a switching point of the recording zone. Stop the recording, and change the recording power immediately before the switching corrected by the above recording power correction procedure during the recording to the immediately preceding recording zone as the recording power of the new recording zone. The recording power is estimated from the result of performing the predetermined recording power determination processing on the power, and when it is determined that the recording power exceeds the predetermined maximum recording power, the test writing is performed again by the above-described test writing procedure. A computer-readable recording medium on which a program for executing a recording restart procedure for setting recording power and restarting recording is executed.
Alternatively, the following information processing device (25) is also provided.
(25) An information processing apparatus including the information recording device according to any one of (1) to (7).
[0029]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
FIG. 1 is a block diagram showing a configuration of an optical disk device according to an embodiment of the present invention.
This optical disk device records information on an optical disk (disk-shaped recording medium) 100 such as an MO disk, a CD-R / RW disk, a CD + R / RW disk, a DVD-RAM, a DVD-R / RW disk, and a DVD + R / RW disk. This is an information recording / reproducing device for reproducing.
The rotation motor 102 rotates the optical disc 100.
The head 103 focuses a light beam on the recording film of the optical disc 100 to form a recording mark. Further, the optical disc 100 is movable in a radial direction, and a test writing area and a user data area provided in the optical disc 100 in advance can be accessed.
[0030]
A known laser light source (not shown) is mounted on the head 103. Generally, a semiconductor laser (Laser Diode: LD) is used as this laser light source. This laser light source is modulated by an LD driver 104 to a state of a predetermined recording power Pw with an input pulse wdata signal. By modulating the laser light between the recording power state and the space power state, recording marks and other parts are formed on the recording film of the optical disc 100. When this is reproduced, a difference in reflectance occurs, and it can be reproduced as an information signal.
The CPU 101 controls recording of information on the optical disc 100 in the CLV system, the ZCLV system, and the CAV system. In the case of the ZCLV method, the ZCLV control unit 111 causes the power calculation unit 109 to store the current recording speed information and calculate the recording power according to the speed at the same time as rotating the rotary motor 102 at a predetermined speed. give. The recording state detection unit 108 samples a reproduction signal from the head 103 during recording at a predetermined timing, and sets a value normalized by the recording power as a recording state detection value (referred to as “B value”).
[0031]
FIG. 2 is a waveform diagram for explaining the operation of the recording state detection unit 108.
The portion where the "LD power (LD power)" shown in FIG. 3B is at a high level is a portion where the recording pulse is generated, and at a predetermined timing during this portion (a circle in FIG. ), The reproduced signal (RF signal) is sampled. Further, in order to cancel the difference in the reproduction light amount level due to the power level, the data is divided (normalized) by the recording power.
As a result, if the recording power is insufficient, the recording state detection value (B value) becomes high because the recording mark (low reflection) is not formed sufficiently, and if the recording power is excessive, the mark formation becomes excessive and becomes low. .
[0032]
The B value is compared with a predetermined target value by the power correction unit 107.
The power correction unit 107 corrects the recording power according to the comparison result. That is, if the B value is smaller than the predetermined target value, the power is excessively large, so that the recording power is reduced. On the contrary, if the B value is larger than the target value, the power is insufficient, so that the recording power is increased.
Thereby, the recording power is controlled so that the recording state is optimized. This is the operation of Running OPC.
However, the running OPC generally cannot respond immediately at the start of recording because the control speed is not high. For this reason, some initial value is required as the recording power.
[0033]
This initial value is initially given from the result of trial writing (OPC).
The test writing unit 105 performs test writing by changing the recording power in a predetermined area of the optical disc 100, reproduces the test writing location, evaluates the reproduced signal, and determines the optimum recording power based on the evaluation result. Get.
The initial value setting unit 106 sets an initial value of the recording power. Since the optimum recording power obtained by the trial writing is the linear velocity at which the trial writing was performed, if the recording is performed at a linear velocity different from the trial writing as in the CAV method or the ZCLV method, an appropriate calculation (for example, the linear velocity) To calculate the recording power.
For example, when the optimum recording power Pw0 is obtained at the test writing linear velocity V0, the recording power Pw1 at another linear velocity V1 is obtained by the calculation based on the following equation 1.
[0034]
(Equation 1)
Pw1 = (V1 / V0) * Pw0
[0035]
Of course, this operation may use a more complicated method.
The power calculation unit 109 calculates an initial recording power value from the linear velocity at the start (or restart) of the recording, and gives the initial value to the initial value setting unit 106.
Therefore, in principle, when additional recording is performed from the position where the previous recording was completed, the recording power is set to the initial value at the previous termination and recording is started, so that recording is performed with the recording power unchanged and in the minimum recording state.
[0036]
FIG. 3 is an explanatory diagram showing an example of zone division by the ZCLV method.
In this example, four zones are provided in accordance with the addresses described on the optical disc 100, and are varied from the inner circumference to 12 × speed (hereinafter, the double speed is described as “x”), 16x, 20x, 24x.
In the zone switching, for example, the recording power of the next zone is estimated according to the calculation based on the above equation 1 and additional recording is performed. At this time, additional recording can be performed at a more optimum recording power by estimating the recording power of the next zone in consideration of not only the recording power at the start of writing in the previous zone but also the recording power change due to the running OPC.
A laser light source (LD) may be deteriorated if it outputs a high recording power exceeding its rated output. In general, the recording power at which the LD deteriorates has individual variations. The maximum output level of the optical disk device is determined to such an extent that the LD is not degraded in consideration of such variations of the LD and errors of the LD power control system.
The power limit detection unit 110 compares the recording power correction value with the limit value, and the comparison result (detection result) is transmitted to the ZCLV control unit 111.
[0037]
Next, a first recording process in the optical disc device will be described.
In this case, the CPU 101 writes information at a substantially constant linear density in the circumferential direction of the disk-shaped recording medium, and performs test writing at a predetermined basic linear velocity on a predetermined area of the disk-shaped recording medium. Trial writing means for determining the optimum recording power at the basic linear velocity, and comparing a predetermined recording state target value with a value corresponding to a reproduction signal from the disc-shaped recording medium while recording information on the disc-shaped recording medium. Recording power correction means for correcting the recording power at any time according to the comparison result, recording stop means for temporarily stopping recording when the recording power exceeds a predetermined maximum output value by the recording power correction means, A recording linear velocity resetting means for lowering and resetting the recording linear velocity from the recording linear velocity at the time of temporary stop by the stopping means to a predetermined recording linear velocity, and the recording linear velocity resetting means; After the recording power in the set recording linear velocity was determined by the test writing means, performs the function of resuming the recording resuming means recording without the once continuous information on stop point is interrupted.
[0038]
In order for the CPU 101 to realize each of the functions, a program for executing the functions is installed in a ROM (not shown) in the CPU 101 in advance. Further, the above-described function may be realized by storing the program in an optical disk such as a CD-ROM disk or a magneto-optical disk such as an MO and installing the program in the memory of the CPU 101 via the disk. Further, the above program may be installed from an external terminal device via wireless or wired communication.
[0039]
FIG. 4 is a flowchart showing a first recording process in the optical disk device shown in FIG.
In the process of writing information at a substantially constant linear density in the circumferential direction of the optical disk, the CPU 101 performs test writing at a predetermined basic linear velocity on a predetermined area of the optical disk in step (indicated by “S” in FIG. 1). The optimum recording power at the basic linear velocity is determined, information is recorded at a substantially constant linear density in the circumferential direction of the optical disk at the linear velocity Nx, and a predetermined recording state is recorded in step 2 while information is recorded on the optical disk by running OPC. The target value is compared with a value corresponding to the reproduction signal from the optical disk, and the recording power is corrected as needed according to the result of the comparison. In step 3, the corrected recording power is adjusted to the limit value (predetermined maximum output value). Is determined.
[0040]
If the recording power corrected in step 3 does not exceed the limit value, the process returns to the first process and the above process is repeated during information recording. If it exceeds, the recording is temporarily stopped in step 4 and temporarily stopped in step 5. The recording linear velocity at the time of the temporary stop is reduced to a predetermined recording linear velocity, for example, the set linear velocity is lowered by one step and reset, and in step 6, the recording power at the reset recording linear velocity is changed to OPC ( After the determination, the recording is restarted without interruption of the continuous information at the stop point at the determined recording power in step 7, and the process is terminated.
[0041]
In this way, when the recording power corrected by the running OPC exceeds or is about to exceed the limit, the recording is temporarily stopped, the recording linear velocity is reduced by one step, the OPC is re-executed, and the recording is resumed. .
According to the first recording process, before the recording power reaches the settable maximum value by the recording power correction during recording, the recording speed is reduced and the test writing is re-executed. The recording power can be determined accurately by reflecting a change in conditions such as the temperature that has changed during recording, and high-quality recording can be realized with a minimum increase in recording time.
[0042]
Next, a second recording process in the optical disc device will be described.
In this case, the CPU 101 writes information at a substantially constant linear density in the circumferential direction of the disk-shaped recording medium, and performs test writing at a predetermined basic linear velocity on a predetermined area of the disk-shaped recording medium. Trial writing means for determining the optimum recording power at the basic linear velocity, and comparing a predetermined recording state target value with a value corresponding to a reproduction signal from the disc-shaped recording medium while recording information on the disc-shaped recording medium. And performs a function of a recording power correcting means for correcting the recording power at any time according to the comparison result.
[0043]
When the recording power exceeds a predetermined maximum output value by the recording power correction means, the recording is temporarily stopped, and after a predetermined time interval, a process of resuming the recording at the linear recording speed at the time of the stop is repeated a predetermined number of times. Stopping means, if the recording power further exceeds a predetermined maximum output value even if the above processing is repeated a predetermined number of times by the recording stopping means, from the recording linear velocity at the time of temporary stop by the recording stopping means to a predetermined recording linear velocity After the recording linear velocity resetting means for lowering and resetting, and the recording power at the recording linear velocity reset by the recording linear velocity resetting means are determined by the test writing means, the continuous information at the temporarily stopped point is It functions as a recording restart unit that restarts recording without interruption.
[0044]
In order for the CPU 101 to realize each of the functions, a program for executing the functions is installed in a ROM (not shown) in the CPU 101 in advance. Further, the above-described function may be realized by storing the program in an optical disk such as a CD-ROM disk or a magneto-optical disk such as an MO and installing the program in the memory of the CPU 101 via the disk. Further, the above program may be installed from an external terminal device via wireless or wired communication.
[0045]
FIG. 5 is a flowchart showing a second recording process in the optical disk device shown in FIG.
In the process of writing information at a substantially constant linear density in the circumferential direction of the optical disk, the CPU 101 performs test writing at a predetermined basic linear velocity on a predetermined area of the optical disk in step (indicated by “S” in the figure) 11. The optimum recording power at the basic linear velocity is determined, information is recorded at a substantially constant linear density in the circumferential direction of the optical disk at the linear velocity Nx, and a predetermined recording state is recorded in step 12 while the information is being recorded on the optical disk by running OPC. The target value is compared with a value corresponding to the reproduction signal from the optical disk, and the recording power is corrected as needed according to the result of the comparison. In step 13, the corrected recording power is adjusted to the limit value (predetermined maximum output value). Is determined, and if not, the process returns to the first process and repeats the above process during information recording.
[0046]
If it exceeds the limit value in the determination in step 13, the recording is temporarily stopped in step 14 and after a predetermined time interval, it is determined in step 15 whether or not the recording is stopped less than a predetermined number of times. If the recording power exceeds the predetermined maximum output value even if the above processing is repeated a predetermined number of times, that is, if the recording power does not exceed the predetermined number of times (if the predetermined number of times is exceeded), the process returns to step 16 Then, the recording linear velocity at the time of the stop is temporarily reduced to a predetermined recording linear velocity. For example, the set linear velocity is lowered by one step and reset, and in step 17, the recording power at the reset recording linear velocity is changed to OPC ( After the determination, the recording is restarted without interruption of the continuous information at the stop position at the determined recording power in step 18, and this processing is ended.
[0047]
In this way, when the power limit is reached, first stop recording for a certain period of time and restart writing. If the limit is still reached, the process of stopping for a certain period of time and restarting writing is repeated a predetermined number of times, and the limit is further reached. In such a case, the recording linear velocity is reduced for the first time.
According to the second recording process, when the power limit is reached, the recording is temporarily stopped, and after the recording is stopped for a certain period of time, the recording is resumed, whereby a change in the recording power due to a temperature rise during the recording can be reduced.
Therefore, extension of the recording time can be prevented to the minimum by not unnecessarily lowering the linear velocity, and recording should be performed at the fastest speed possible and with minimal load on the laser light source. Can be.
[0048]
Next, a third recording process in the optical disc device will be described.
The cause of the change in the optimum value of the recording power during recording may be a change in the laser wavelength due to a temperature change or a change in the in-plane state of the recording medium. It is possible that the recording power deviates from the true optimum recording power at the time.
Therefore, in the third recording process, even when the recording power is largely changed by the running OPC, it is highly possible that the error from the actual optimum recording power is large. Then, the OPC is executed again.
[0049]
In this case, the CPU 101 writes information at a substantially constant linear density in the circumferential direction of the disk-shaped recording medium, and performs test writing at a predetermined basic linear velocity on a predetermined area of the disk-shaped recording medium. Trial writing means for determining the optimum recording power at the basic linear velocity, and comparing a predetermined recording state target value with a value corresponding to a reproduction signal from the disc-shaped recording medium while recording information on the disc-shaped recording medium. Recording power correction means for correcting the recording power at any time in accordance with the result of the comparison, and temporarily stopping the recording when the correction amount of the recording power by the recording power correction means exceeds a predetermined amount, and performing the test by the test writing means. It functions as a recording restarting means for setting the recording power obtained by re-executing the writing and restarting the recording.
[0050]
In order for the CPU 101 to realize each of the functions, a program for executing the functions is installed in a ROM (not shown) in the CPU 101 in advance. Further, the above-described function may be realized by storing the program in an optical disk such as a CD-ROM disk or a magneto-optical disk such as an MO and installing the program in the memory of the CPU 101 via the disk. Further, the above program may be installed from an external terminal device via wireless or wired communication.
[0051]
FIG. 6 is a flowchart showing a third recording process in the optical disk device shown in FIG.
In the process of writing information at a substantially constant linear density in the circumferential direction of the optical disk, the CPU 101 performs test writing at a predetermined basic linear velocity on a predetermined area of the optical disk in step (indicated by “S” in the figure) 21. The optimum recording power at the basic linear velocity is determined, information is recorded at a substantially constant linear density in the circumferential direction of the optical disk at the linear velocity Nx, and a predetermined recording state is recorded in step 22 while the information is being recorded on the optical disk by running OPC. The target value is compared with a value corresponding to the reproduction signal from the optical disk, and the recording power is corrected as needed in accordance with the comparison result. In step 23, it is determined whether the corrected amount of the corrected recording power exceeds a predetermined amount. Is determined, and if it does not exceed, the process returns to the first process and the above process is repeated.
[0052]
If the correction amount of the recording power corrected in the determination in step 23 exceeds the predetermined amount, the recording is temporarily stopped in step 24, and the test writing is re-executed by OPC (test writing) in step 25 to acquire the recording power again. Then, in step 26, the recording power is set and the recording is restarted, and this processing ends.
According to the third recording process, when the power limit is reached, the recording is temporarily stopped, the test writing is performed again, and the true optimum recording power at that time is obtained and the recording is performed, so that higher quality recording can be performed. .
[0053]
Next, a fourth recording process in the optical disc device will be described.
The biggest factor in the change of the recording power due to the running OPC is an increase in the temperature of the LD due to the output of the recording power. Such a change in the recording power can be suppressed to some extent by stopping the recording and lowering the temperature.
Therefore, in the fourth recording process, the recording power is more accurately obtained by performing the OPC at the actual recording speed.
For example, Orange Book part 2 volume 2 version 1.1 (Orange Book part 2 volume 2 version 1.1) defines a power calibration area in the outer peripheral area of a CD-R disc, and uses such means. By using this, OPC can be performed at the actual write speed.
[0054]
In this case, the CPU 101 performs the function of a unit that performs trial writing at a linear speed at which the recording is restarted in a predetermined area provided on the outer peripheral portion of the disk-shaped recording medium. Therefore, a program for realizing this function by the CPU 101 is added to the above program.
Then, in the above-described first to third processes, the CPU 101 performs OPC (trial writing) on a predetermined area provided on the outer peripheral portion of the optical disc 100 at a linear velocity at which the recording is restarted.
According to the fourth recording process, test writing is performed at a linear speed at the time of resuming recording in a predetermined area provided on the outer peripheral portion of the recording medium, so that higher quality recording can be performed.
[0055]
Next, a fifth recording process in the optical disk device will be described.
As described above, the maximum output power of the optical disk device is determined with a considerable margin so as not to deteriorate the LD. Not much. The correction of the recording power by the running OPC is performed during the recording, and since the remaining recording time is short, there may be a case where there is no problem even if the set power is slightly increased.
Therefore, in the fifth recording process, the recording power increase by the running OPC is allowed by a predetermined value rather than the limit applied to the power at the start of recording. Of course, the setting of the predetermined value must be determined with care not to damage the LD, but it is possible to greatly reduce the case where the recording speed has to be reduced due to the influence of the running OPC.
[0056]
In this case, the CPU 101 sets the recording power higher than the allowable value of the maximum recording power applied to the recording power at the start of recording, which is set by estimating from the result of trial writing by the trial writing means before the start of recording. The correction means has a function of increasing the allowable value of the recording power corrected during recording by a predetermined value. Therefore, a program for realizing this function by the CPU 101 is added to the above program.
Then, in the above-described first to fourth processes, the CPU 101 sets the allowable value of the maximum recording power applied to the recording power at the start of recording, which is set by estimating from the result of OPC (trial writing) before the start of recording. Instead, the allowable value of the recording power corrected during recording by the recording power correction is increased by a predetermined value.
[0057]
According to the fifth recording process, the increase in the required recording power due to the correction of the recording power during recording also shortens the remaining recording time, and the load on the laser light source is small even if the power is slightly increased. By increasing the maximum recording power value, the occurrence of a decrease in recording speed can be suppressed, and the maximum possible recording speed can be realized.
[0058]
Next, sixth and seventh recording processes in the optical disk device will be described.
If OPC is performed before the start of recording, the recording power in each zone is estimated by the ZCLV control unit 111. At that time, the recording power that did not exceed the limit exceeded the limit at the time of zone switching due to the correction of recording power by running OPC. In some cases. At the start of recording in the next zone, it is necessary to set the recording power in consideration of the recording power change due to the correction of the recording power during the recording up to the immediately preceding zone, in order to set the optimum recording power, but it may exceed the limit. Correcting the recording power must be avoided.
Therefore, in the sixth recording process, the recording power at the recording speed of the new zone is estimated from the recording power at that point immediately before the end position of the zone, and if the recording power exceeds the limit, the recording is performed without changing the recording speed. To continue.
[0059]
In this case, the CPU 101 writes information with a substantially constant linear density in the circumferential direction of the disk-shaped recording medium at a predetermined linear velocity different for each of a plurality of recording zones provided in the radial direction of the disk-shaped recording medium. Test writing means for performing test writing at a predetermined basic linear velocity in a predetermined area of the disk-shaped recording medium to determine an optimum recording power at the basic linear velocity; and recording information on the disk-shaped recording medium. A recording power correction means for comparing a predetermined recording state target value with a value corresponding to a reproduction signal from the disk-shaped recording medium and correcting a recording power as needed according to the comparison result; and a switching point of the recording zone. The recording power immediately before switching, which has been modified by the recording power modifying means during recording up to the immediately preceding recording zone as the recording power of the new recording zone. On the other hand, the recording power is estimated from the result of performing the predetermined recording power determination processing, and if it is determined that the recording power exceeds the predetermined maximum recording power, the recording is continued without stopping while maintaining the immediately preceding recording speed. Acts as a means.
[0060]
In order for the CPU 101 to realize each of the functions, a program for executing the functions is installed in a ROM (not shown) in the CPU 101 in advance. Further, the above-described function may be realized by storing the program in an optical disk such as a CD-ROM disk or a magneto-optical disk such as an MO and installing the program in the memory of the CPU 101 via the disk. Further, the above program may be installed from an external terminal device via wireless or wired communication.
[0061]
FIG. 7 is a flowchart showing a sixth recording process in the optical disk device shown in FIG.
In the process of writing information at a substantially constant linear density in the circumferential direction of the optical disc at a predetermined linear velocity different for each of a plurality of recording zones provided in the radial direction of the optical disc, the CPU 101 performs steps (indicated by “S” in the figure). At 31) test writing is performed at a predetermined basic linear velocity on a predetermined area of the optical disk to determine the optimum recording power at the basic linear velocity, and the linear velocity Nx is applied to zone 1 (the first zone) in the circumferential direction of the optical disk. Information is recorded at a substantially constant linear density. In step 32, while recording information on the optical disk, a predetermined recording state target value is compared with a value corresponding to a reproduction signal from the optical disk, and at any time according to the comparison result. The recording power when the recording power is corrected and the linear velocity is increased by one step from Nx just before the end position of zone 1 (the recording power of the new recording zone at the switching point of the recording zone) Estimating a recording power) from the result obtained by performing a predetermined recording power determination process on the modified immediately before switching of the recording power during the recording immediately before the recording zone and.
[0062]
In step 33, it is determined whether or not the estimated recording power exceeds the limit value (predetermined maximum recording power). If it is determined that the estimated recording power exceeds the limit value, in step 36, the recording is stopped while maintaining the previous recording speed, that is, the linear velocity Nx. The recording of zone 2 (the second zone) is resumed without recording, and the recording is continued, and this processing ends.
If the estimated recording power does not exceed the limit value in step 33, the recording is temporarily stopped in step 34, the linear velocity is raised by one step from Nx, and the recording in zone 2 is resumed in step 35 to continue recording. The process ends.
According to the sixth recording process, when the recording power exceeds the maximum value due to the influence of the correction amount of the recording power, the recording is continued without changing the recording speed, and the recording time due to the stop is reduced. The recording can be performed at the maximum recording speed in consideration of the load on the laser light source while suppressing the extension of the length.
[0063]
Next, in the seventh recording process, as a result of temporarily stopping at the zone end position and re-executing the OPC to obtain the recording power of the new zone, if the recording power exceeds the limit, the recording is performed while maintaining the speed of the old zone. Resume.
In this case, the CPU 101 writes information with a substantially constant linear density in the circumferential direction of the disk-shaped recording medium at a predetermined linear velocity different for each of a plurality of recording zones provided in the radial direction of the disk-shaped recording medium. Performs the function of test writing means for performing test writing on a predetermined area of the disk-shaped recording medium at a predetermined basic linear velocity and determining the optimum recording power at the basic linear velocity.
[0064]
Also, while recording information on the disc-shaped recording medium, a predetermined recording state target value is compared with a value corresponding to a reproduction signal from the disc-shaped recording medium, and the recording power is corrected as needed according to the comparison result. A recording power correction means for stopping the recording at the switching point of the recording zone, and the recording power immediately before the switching corrected by the recording power correction means during the recording to the immediately preceding recording zone as the recording power of the new recording zone. The recording power is estimated from the result of performing a predetermined recording power determination process on the recording medium, and when it is determined that the recording power exceeds the predetermined maximum recording power, the test writing is performed again by the test writing means. It functions as a recording restart means for setting the recording power and restarting the recording.
[0065]
In order for the CPU 101 to realize each of the functions, a program for executing the functions is installed in a ROM (not shown) in the CPU 101 in advance. Further, the above-described function may be realized by storing the program in an optical disk such as a CD-ROM disk or a magneto-optical disk such as an MO and installing the program in the memory of the CPU 101 via the disk. Further, the above program may be installed from an external terminal device via wireless or wired communication.
[0066]
FIG. 8 is a flowchart showing a seventh recording process in the optical disk device shown in FIG.
In the process of writing information at a substantially constant linear density in the circumferential direction of the optical disc at a predetermined linear velocity different for each of a plurality of recording zones provided in the radial direction of the optical disc, the CPU 101 performs steps (indicated by “S” in the figure). 4) At 41, test writing is performed on a predetermined area of the optical disc at a predetermined basic linear velocity to determine the optimum recording power at the basic linear velocity, and the linear velocity Nx is applied to zone 1 (first zone) in the circumferential direction of the optical disc. Information is recorded at a substantially constant linear density. In step 42, while recording information on the optical disk, a predetermined recording state target value is compared with a value corresponding to a reproduction signal from the optical disk, and at any time according to the comparison result. The recording power is corrected, recording is temporarily stopped at the end position (switching point) of zone 1, and in step 43, the recording power when the linear velocity is increased by one step from Nx (new recording Estimating a recording power) from the result obtained by performing a predetermined recording power determination process on the modified immediately before switching of the recording power during the recording immediately before the recording zone as a recording power of over emissions.
[0067]
In step 44, it is determined whether or not the estimated recording power exceeds the limit value (predetermined maximum recording power). If not, in step 48, the linear velocity is raised by one step from Nx to zone 2 (second The recording of the zone is resumed, the recording is continued, and this process ends.
If the estimated recording power exceeds the limit value in the determination in step 44, OPC (test writing) is re-executed in step 45, and the recording power of zone 2 is estimated by the re-execution, and the estimated recording power is limited in step 46. It is determined whether or not the value exceeds the value. If it is determined that the value does not exceed the value, in step 48, the linear velocity is increased by one step from Nx, and the recording in zone 2 (second zone) is resumed, recording is continued, and this processing ends. I do.
If the estimated recording power exceeds the limit value in the determination in step 46, the recording in zone 2 (second zone) is resumed in step 47 without stopping while maintaining the linear velocity Nx which is the immediately preceding recording velocity. Subsequently, this process ends.
[0068]
According to the seventh recording process, when the recording power is set in consideration of the recording power change due to the recording power correction during the recording to the immediately preceding zone at the start of the next zone at the break of the zone, the maximum recording power is set. Is exceeded, the optimum recording power is determined again in the test writing area, so that the zone speed can be increased in some cases, and recording can be performed at the maximum recording speed.
[0069]
Next, an embodiment of the information processing apparatus of the present invention will be described.
FIG. 9 is a functional block diagram showing a schematic configuration of an information processing apparatus according to an embodiment of the present invention.
The information processing apparatus includes a main controller 21, an interface 22, a storage device (HDD) 23, an input device 24, a display device 25, and the like, and connects an information recording device (optical disk drive) 20 via the interface 22. are doing.
The main control device (host computer) 21 includes a microcomputer (CPU), a main memory (both are publicly known and not shown), and controls the entire information processing device.
[0070]
The interface 22 is a two-way communication interface with the optical disk drive 20 and conforms to a standard interface such as ATAPI and SCSI. The interface 22 is connected to the interface of the optical disk drive 20. The connection between the interfaces may be not only a cable connection using a communication line such as a communication cable (for example, a SCSI cable), but also a wireless connection using infrared rays or the like.
The storage device (hard disk drive: HDD) 23 stores a program described by a code readable by the microcomputer of the main control device 21. When the drive power supply of the information processing device is turned on, the program is loaded into the main memory of the main control device.
[0071]
The display device 25 includes a display unit (not shown) such as a CRT, a liquid crystal display (LCD), and a plasma display panel (PDP), and displays various information from the main control device 21.
The input device 24 includes at least one input medium (not shown) of, for example, a keyboard, a mouse, and a pointing device, and notifies the main control device 21 of various information input by a user.
The information from the input device 24 may be input by a wireless method. Further, as a unit in which the display device 25 and the input device 24 are integrated, for example, there is a CRT with a touch panel.
The information processing apparatus has an operating system (hereinafter referred to as “OS”). All devices constituting the information processing apparatus are managed by the OS.
[0072]
FIG. 10 is a functional block diagram illustrating an example of a main configuration of the information recording apparatus (optical disc drive) illustrated in FIG.
This optical disk drive includes a spindle motor 2, an optical pickup 3, a laser controller 4, a CD encoder 5, a CD-ROM encoder 6, an ATIP decoder 7, a buffer RAM 8, a buffer manager 9, a read amplifier 10, a CD decoder 11, and a CD-ROM decoder. 12, an ATAPI / SCSI interface (I / F) 13, a motor driver 14, a servo unit 15, a D / A converter 16, a ROM 17, a CPU 18, a RAM 19 and the like. In FIG. 10, arrows indicate the directions in which data mainly flows, and for simplification of the drawing, the CPU 18 that controls each block in FIG. Is omitted.
[0073]
The ROM 17 stores a control program described in a code decodable by the CPU 18.
When the power of the optical disk drive is turned on, the above-described program is loaded into a known main memory (not shown), and the CPU 18 controls the operation of each unit according to the program, and temporarily stores data and the like necessary for the control. Is stored in the RAM 19.
The optical disc 1 is, for example, a CD-R (CD Recordable) disc (also referred to as a CD-Write Once) that can be written only once, or a CD-E (CD eraseable) that can be written multiple times. There is a disc (CD-RW: also referred to as CD rewritable). There are also disc-shaped recording media such as an MO disk, a CD + R / RW disk, a DVD-RAM, a DVD-R / RW disk, and a DVD + R / RW disk.
[0074]
The spindle motor 2 drives the optical disc 1 to rotate. The spindle motor 2 is controlled by a motor driver 14 and a servo unit 15 so that the linear velocity becomes constant. This linear velocity can be changed stepwise.
The optical pickup 3 incorporates a well-known semiconductor laser, an optical system, a focus actuator, a track actuator, a light receiving element, and a position sensor, not shown, and irradiates the optical disc 1 with laser light LB.
The optical pickup 3 can be moved in the sledge direction by a seek motor. These focus actuator, track actuator, and seek motor are controlled by the motor driver 14 and the servo unit 15 based on signals obtained from the light receiving element and the position sensor so that the spot of the laser beam LB is located at a target location on the optical disc 1. Is controlled.
[0075]
Then, at the time of reading, the reproduction signal obtained by the optical pickup 3 is amplified by the read amplifier 10 and binarized, and then input to the CD decoder 11. The input binarized data is converted by the CD decoder 11 into an EFM (Eight
to Fourteen Modulation).
It should be noted that the recording data is EFM modulated by grouping 8 bits at a time. In this EFM modulation, 8 bits are converted into 14 bits, and 3 combined bits are added to make a total of 17 bits.
In this case, the combined bits are attached so that the number of “1” and “0” up to that time are equal on average. This is called “DC component suppression”, and the slice level fluctuation of the DC-cut reproduction signal is suppressed.
[0076]
The demodulated data is subjected to deinterleaving and error correction. Thereafter, the data is input to the CD-ROM decoder 12, and further error correction processing is performed to improve the reliability of the data.
In this manner, the data on which the error correction processing has been performed twice is temporarily stored in the buffer RAM 8 by the buffer manager 9 and is processed as data in the form of sector data via the ATAPI / SCSI I / F 13. The data is transferred to the main controller (host computer) of the device at a stretch.
In the case of music data, data output from the CD decoder 11 is input to the D / A converter 16 and is extracted as an analog audio output signal Audio.
[0077]
At the time of writing, data sent from the host computer through the ATAPI / SCSI I / F 13 is temporarily stored in the buffer RAM 8 by the buffer manager 9.
The write operation is started with a certain amount of data stored in the buffer RAM 8. In this case, it is necessary to position the laser spot at the write start point before that. This point is determined by a wobble signal which has been engraved on the optical disk 1 in advance by meandering of the track.
The wobble signal includes absolute time information called ATIP, and this information is extracted by the ATIP decoder 7.
The synchronization signal generated by the ATIP decoder 7 is input to the CD encoder 5 to enable writing of data at an accurate position on the optical disk 1.
[0078]
The data in the buffer RAM 8 is added with an error correction code and interleaved by the CD-ROM encoder 6 and the CD encoder 5, and is recorded on the optical disk 1 via the laser controller 4 and the optical pickup 3.
The EFM-modulated data drives the laser at a channel bit rate of 4.3218 Mbps (standard speed) as a bit stream. In this case, the recording data forms an EFM frame in units of 588 channel bits. The channel clock means a clock having the frequency of the channel bit.
[0079]
The CPU 18 of the optical disk drive 20 corresponds to a functional unit that executes the above-described first to seventh processes. Since the contents of the processing have been described above, the description is omitted. In this way, even in an information processing device in which an optical disk drive is connected to or incorporated in a personal computer, the occurrence of a problem that exceeds the maximum output of the laser light source due to the power correction by the running OPC is prevented, and the laser light source is degraded. Without recording, information can be recorded at the fastest recording speed and the optimal recording power, and high recording quality can be realized.
[0080]
【The invention's effect】
As described above, according to the information recording apparatus and the information recording method of the present invention, it is possible to prevent a problem that the maximum output of the laser light source exceeds the maximum output of the laser light source due to the power correction by the running OPC, and to perform the CAV recording and the ZCLV recording. Even in the case of (1), information can be recorded at the fastest recording speed and the optimal recording power without deteriorating the laser light source, and high recording quality can be realized. According to the program of the present invention and a computer-readable recording medium, a computer can easily realize the recording function according to the present invention. Further, according to the information processing apparatus of the present invention, the present invention relates to a personal computer including an MO drive, a CD-R / RW drive, a CD + R / RW drive, a DVD-R / RW drive, a DVD + R / RW drive, and the like. The recording function can be easily realized.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a configuration of an optical disc device according to an embodiment of the present invention.
FIG. 2 is a waveform chart for explaining the operation of a recording state detection unit shown in FIG.
FIG. 3 is an explanatory diagram showing an example of zone division by the ZCLV method.
FIG. 4 is a flowchart showing a first recording process in the optical disc device shown in FIG. 1;
FIG. 5 is a flowchart showing a second recording process in the optical disc device shown in FIG. 1;
FIG. 6 is a flowchart showing a third recording process in the optical disc device shown in FIG. 1;
FIG. 7 is a flowchart showing a sixth recording process in the optical disk device shown in FIG. 1;
FIG. 8 is a flowchart illustrating a seventh recording process in the optical disc device illustrated in FIG. 1;
FIG. 9 is a functional block diagram illustrating a schematic configuration of an information processing apparatus according to an embodiment of the present invention.
FIG. 10 is a functional block diagram showing an example of a main configuration of the information recording device shown in FIG. 9;
[Explanation of symbols]
1,100: Optical disk 2: Spindle motor
3: Optical pickup 4: Laser controller
5: CD encoder 6: CD-ROM encoder
7: ATIP decoder 8: Buffer RAM
9: Buffer manager 10: Read amplifier
11: CD decoder 12: CD-ROM decoder
13: ATAPI / SCSI I / F
14: Motor driver 15: Servo unit
16: D / A converter 17: ROM
18, 101: CPU 19: RAM
20: Information recording device 21: Main control device
22: Interface 23: Storage device
24: input device 25: display device
102: Rotary motor 103: Head
104: LD driver 105: trial writing unit
106: Initial value setting unit 107: Power correction unit
108: recording state detection unit 109: power calculation unit
110: Power limit detector
111: ZCLV control unit LB: laser beam

Claims (25)

An information recording device that writes information at a substantially constant linear density in a circumferential direction of a disk-shaped recording medium,
Test writing means for performing test writing in a predetermined area of the disc-shaped recording medium at a predetermined basic linear velocity to determine an optimum recording power at the basic linear velocity;
During recording information on the disc-shaped recording medium, a predetermined recording state target value is compared with a value corresponding to a reproduction signal from the disc-shaped recording medium, and recording power is corrected as needed according to the comparison result. Power correction means,
Recording stop means for temporarily stopping recording when the recording power exceeds a predetermined maximum output value by the recording power correction means,
Recording linear velocity resetting means for lowering and resetting the recording linear velocity at the time of temporary stop by the recording stop means to a predetermined recording linear velocity,
Recording restart means for restarting recording without interruption of continuous information at the temporarily stopped position after the recording power at the recording linear velocity reset by the recording linear velocity resetting means is determined by the test writing means. An information recording device, characterized in that: An information recording device that writes information at a substantially constant linear density in a circumferential direction of a disk-shaped recording medium,
Test writing means for performing test writing in a predetermined area of the disc-shaped recording medium at a predetermined basic linear velocity to determine an optimum recording power at the basic linear velocity;
During recording information on the disc-shaped recording medium, a predetermined recording state target value is compared with a value corresponding to a reproduction signal from the disc-shaped recording medium, and recording power is corrected as needed according to the comparison result. Power correction means,
When the recording power exceeds the predetermined maximum output value by the recording power correcting means, the recording is stopped once, and after a predetermined time interval, after a predetermined time interval, the recording stop means for repeating the process of restarting the recording at the linear recording speed at the time of the stop is performed a predetermined number of times. When,
If the recording power further exceeds a predetermined maximum output value even after the processing is repeated a predetermined number of times by the recording stop means, the recording linear velocity at the time of temporary stop by the recording stop means is reduced to a predetermined recording linear velocity and reset. Recording linear velocity resetting means,
Recording restart means for restarting recording without interruption of continuous information at the temporarily stopped position after the recording power at the recording linear velocity reset by the recording linear velocity resetting means is determined by the test writing means. An information recording device, characterized in that: An information recording device that writes information at a substantially constant linear density in a circumferential direction of a disk-shaped recording medium,
Test writing means for performing test writing in a predetermined area of the disc-shaped recording medium at a predetermined basic linear velocity to determine an optimum recording power at the basic linear velocity;
During recording information on the disc-shaped recording medium, a predetermined recording state target value is compared with a value corresponding to a reproduction signal from the disc-shaped recording medium, and recording power is corrected as needed according to the comparison result. Power correction means,
When the correction amount of the recording power by the recording power correction means exceeds a predetermined amount, the recording is temporarily stopped, and the recording power obtained by re-executing the test writing by the test writing means is set and the recording is resumed. And an information recording device. 4. The information recording apparatus according to claim 1, wherein test writing is performed on a predetermined area provided on an outer peripheral portion of the disk-shaped recording medium at a linear velocity at which the recording is restarted. 5. An information recording device comprising means. 5. The information recording apparatus according to claim 1, wherein a maximum power applied to a recording power at the start of recording set by estimating from a result of trial writing by the trial writing means before the start of recording. 6. An information recording apparatus, wherein an allowable value of a recording power corrected during recording by the recording power correcting means is set to be larger by a predetermined value than an allowable value of the recording power. An information recording apparatus that writes information at a substantially constant linear density in a circumferential direction of the disc-shaped recording medium at a predetermined linear velocity different for each of a plurality of recording zones provided in a radial direction of the disc-shaped recording medium,
Test writing means for performing test writing in a predetermined area of the disc-shaped recording medium at a predetermined basic linear velocity to determine an optimum recording power at the basic linear velocity;
During recording information on the disc-shaped recording medium, a predetermined recording state target value is compared with a value corresponding to a reproduction signal from the disc-shaped recording medium, and recording power is corrected as needed according to the comparison result. Power correction means,
At the switching point of the recording zone, a predetermined recording power determination process was performed on the recording power immediately before the switching corrected by the recording power correcting unit during the recording to the immediately preceding recording zone as the recording power of the new recording zone. Means for estimating the recording power from the result and, when it is determined that the recording power exceeds a predetermined maximum recording power, means for continuing recording without stopping while maintaining the immediately preceding recording speed. Recording device. An information recording apparatus that writes information at a substantially constant linear density in a circumferential direction of the disc-shaped recording medium at a predetermined linear velocity different for each of a plurality of recording zones provided in a radial direction of the disc-shaped recording medium,
Test writing means for performing test writing in a predetermined area of the disc-shaped recording medium at a predetermined basic linear velocity to determine an optimum recording power at the basic linear velocity;
During recording information on the disc-shaped recording medium, a predetermined recording state target value is compared with a value corresponding to a reproduction signal from the disc-shaped recording medium, and recording power is corrected as needed according to the comparison result. Power correction means,
The recording is stopped at the switching point of the recording zone, and the recording power of the new recording zone is set to a predetermined recording power with respect to the recording power immediately before the switching corrected by the recording power correcting means during the recording to the immediately preceding recording zone. The recording power is estimated from the result of the determination processing, and when it is determined that the recording power exceeds a predetermined maximum recording power, the recording power obtained by re-executing the trial writing by the trial writing means is set and recorded. An information recording apparatus, comprising: a recording restart unit that restarts recording. An information recording method for writing information at a substantially constant linear density in a circumferential direction of a disk-shaped recording medium, wherein test writing is performed at a predetermined basic linear velocity on a predetermined area of the disk-shaped recording medium, and the basic linear velocity is written. Is determined, and while recording information on the disc-shaped recording medium, a predetermined recording state target value is compared with a value corresponding to a reproduction signal from the disc-shaped recording medium, and according to a result of the comparison. If necessary, the recording power is corrected, and if the corrected recording power exceeds the predetermined maximum output value, the recording is temporarily stopped, and the recording linear velocity at the time of the suspension is reduced to the predetermined recording linear velocity and reset. The recording power at the reset recording linear velocity is determined by the test writing, and then the recording is restarted without interruption of the continuous information at the temporarily stopped point. Method. An information recording method for writing information at a substantially constant linear density in a circumferential direction of a disk-shaped recording medium, wherein test writing is performed at a predetermined basic linear velocity on a predetermined area of the disk-shaped recording medium, and the basic linear velocity is written. Is determined, and while recording information on the disc-shaped recording medium, a predetermined recording state target value is compared with a value corresponding to a reproduction signal from the disc-shaped recording medium, and according to a result of the comparison. The recording power is corrected at any time, and when the corrected recording power exceeds a predetermined maximum output value, the recording is temporarily stopped, and after a predetermined time interval, the recording is resumed at the recording linear velocity at the time of the stop. If the recording power exceeds the predetermined maximum output value even after repeating the process a predetermined number of times, the recording linear velocity at the time of the temporary stop is reduced to a predetermined recording linear velocity and reset. After determining by the test writing recording power in the re-set recording linear velocity, the information recording method characterized by resuming recording without the once continuous information on the stop point is interrupted. An information recording method for writing information at a substantially constant linear density in a circumferential direction of a disk-shaped recording medium, wherein test writing is performed at a predetermined basic linear velocity on a predetermined area of the disk-shaped recording medium, and the basic linear velocity is written. Is determined, and while recording information on the disc-shaped recording medium, a predetermined recording state target value is compared with a value corresponding to a reproduction signal from the disc-shaped recording medium, and according to a result of the comparison. The recording power is corrected at any time, and when the corrected amount of the corrected recording power exceeds a predetermined amount, the recording is temporarily stopped, and the recording power obtained by re-executing the test writing by the test writing is set and recorded. An information recording method characterized by restarting the process. 11. The information recording method according to claim 8, wherein test writing is performed on a predetermined area provided on an outer peripheral portion of the disk-shaped recording medium at a linear velocity at which the recording is restarted. An information recording method, characterized in that: 12. The information recording method according to claim 8, wherein a maximum recording applied to a recording power at the start of recording set by estimating from a result of trial writing by the trial writing before recording starts. An information recording method, wherein an allowable value of a recording power corrected during recording is set to be larger than an allowable value of a power by a predetermined value. An information recording method for writing information at a substantially constant linear density in a circumferential direction of the disk-shaped recording medium at a predetermined linear velocity different for each of a plurality of recording zones provided in a radial direction of the disk-shaped recording medium, A test write is performed at a predetermined basic linear velocity in a predetermined area of the disk-shaped recording medium to determine an optimum recording power at the basic linear velocity, and a predetermined recording state target value and a predetermined recording state target while recording information on the disk-shaped recording medium. A value corresponding to a reproduction signal from the disc-shaped recording medium is compared, and a recording power is corrected as needed according to the comparison result. During the recording up to the zone, the recording power is estimated from the result of performing a predetermined recording power determination process on the corrected recording power immediately before the switching, and the recording power is estimated. Information recording method but which is characterized in that continuously recorded without stopping while maintaining When it is determined to exceed the predetermined maximum recording power, the previous recording speed. An information recording method for writing information at a substantially constant linear density in a circumferential direction of the disk-shaped recording medium at a predetermined linear velocity different for each of a plurality of recording zones provided in a radial direction of the disk-shaped recording medium, A test write is performed at a predetermined basic linear velocity in a predetermined area of the disk-shaped recording medium to determine an optimum recording power at the basic linear velocity, and a predetermined recording state target value and a predetermined recording state target while recording information on the disk-shaped recording medium. A value corresponding to a reproduction signal from the disc-shaped recording medium is compared, a recording power is corrected at any time according to the comparison result, recording is stopped at a switching point of the recording zone, and recording of a new recording zone is performed. Estimating the recording power from the result of performing a predetermined recording power determination process on the corrected recording power immediately before switching during recording to the immediately preceding recording zone as the power. If the recording power is determined to exceed the predetermined maximum recording power, the information recording method characterized by resuming recording by setting the recording power obtained by re-executing the test writing by the test writing. A procedure for writing information at a substantially constant linear density in the circumferential direction of the disc-shaped recording medium on the computer, and performing a test writing at a predetermined basic linear velocity on a predetermined area of the disc-shaped recording medium at the basic linear velocity. A test writing procedure for determining the optimum recording power, and a predetermined recording state target value during recording of information on the disc-shaped recording medium was compared with a value corresponding to a reproduction signal from the disc-shaped recording medium. A recording power correction procedure for correcting the recording power as needed according to the result, a recording stop procedure for temporarily stopping recording when the recording power exceeds a predetermined maximum output value by the recording power correction procedure, A recording linear velocity reset procedure for lowering the recording linear velocity from the stop recording linear velocity to a predetermined recording linear velocity and resetting the recording linear velocity, and a recording linear velocity reset by the recording linear velocity reset procedure The recording power was determined by the test writing procedure in the program for temporarily executing a resume recording restart procedure records without continuous information on the stop point is interrupted. A procedure for writing information at a substantially constant linear density in the circumferential direction of the disc-shaped recording medium on the computer, and performing a test writing at a predetermined basic linear velocity on a predetermined area of the disc-shaped recording medium at the basic linear velocity. A test writing procedure for determining the optimum recording power, and a predetermined recording state target value during recording of information on the disc-shaped recording medium was compared with a value corresponding to a reproduction signal from the disc-shaped recording medium. A recording power correction procedure for correcting the recording power at any time in accordance with the result; and, when the recording power exceeds a predetermined maximum output value by the recording power correction procedure, the recording is temporarily stopped, and after a predetermined time interval, the recording power is temporarily stopped. A recording stop procedure for repeating a process of restarting recording at a recording linear velocity a predetermined number of times; When the output value exceeds the large output value, the recording linear velocity is reset from the recording linear velocity at the time of the temporary stop by the recording stop procedure to a predetermined recording linear velocity, and the recording linear velocity is reset. After determining the recording power at the set recording linear velocity by the test writing procedure, and then restarting the recording without interruption of the continuous information at the temporarily stopped location. A procedure for writing information at a substantially constant linear density in the circumferential direction of the disc-shaped recording medium on the computer, and performing a test writing at a predetermined basic linear velocity on a predetermined area of the disc-shaped recording medium at the basic linear velocity. A test writing procedure for determining the optimum recording power, and a predetermined recording state target value during recording of information on the disc-shaped recording medium was compared with a value corresponding to a reproduction signal from the disc-shaped recording medium. A recording power correction procedure for correcting the recording power as needed according to the result; and temporarily stopping the recording when the correction amount of the recording power by the recording power correction procedure exceeds a predetermined amount, and re-executing the test writing by the test writing procedure. And a recording restart procedure for setting the recording power obtained as described above and restarting recording. A step of writing information at a substantially constant linear density in a circumferential direction of the disk-shaped recording medium at a predetermined linear velocity different for each of a plurality of recording zones provided in a radial direction of the disk-shaped recording medium in the computer; A test writing procedure of performing test writing at a predetermined basic linear velocity on a predetermined area of the disk-shaped recording medium to determine an optimum recording power at the basic linear velocity, and a predetermined recording state during recording of information on the disk-shaped recording medium. A recording power correction procedure of comparing a target value with a value corresponding to a reproduction signal from the disk-shaped recording medium and correcting a recording power as needed according to the comparison result; and a new recording at a switching point of the recording zone. The recording power immediately before the switching corrected by the recording power correction procedure during the recording to the immediately preceding recording zone as the recording power of the zone is a predetermined value. The recording power is estimated from the result of the recording power determination processing, and when it is determined that the recording power exceeds the predetermined maximum recording power, a procedure for continuing recording without stopping while maintaining the immediately preceding recording speed is executed. Program to let you. A step of writing information at a substantially constant linear density in a circumferential direction of the disk-shaped recording medium at a predetermined linear velocity different for each of a plurality of recording zones provided in a radial direction of the disk-shaped recording medium in the computer; A test writing procedure of performing test writing at a predetermined basic linear velocity on a predetermined area of the disk-shaped recording medium to determine an optimum recording power at the basic linear velocity, and a predetermined recording state during recording of information on the disk-shaped recording medium. A recording power correction procedure for comparing a target value with a value corresponding to a reproduction signal from the disk-shaped recording medium and correcting the recording power as needed according to the comparison result, and stopping recording at a switching point of the recording zone. The recording power immediately before the switching corrected by the recording power correction procedure during the recording to the immediately preceding recording zone as the recording power of the new recording zone. On the other hand, the recording power is estimated from the result of performing the predetermined recording power determination processing, and when it is determined that the recording power exceeds the predetermined maximum recording power, the recording obtained by re-executing the test writing according to the test writing procedure is performed. A program for executing a recording restart procedure for setting power and restarting recording. A procedure for writing information at a substantially constant linear density in the circumferential direction of the disc-shaped recording medium on the computer, and performing a test writing at a predetermined basic linear velocity on a predetermined area of the disc-shaped recording medium at the basic linear velocity. A test writing procedure for determining the optimum recording power, and a predetermined recording state target value during recording of information on the disc-shaped recording medium was compared with a value corresponding to a reproduction signal from the disc-shaped recording medium. A recording power correction procedure for correcting the recording power as needed according to the result, a recording stop procedure for temporarily stopping recording when the recording power exceeds a predetermined maximum output value by the recording power correction procedure, A recording linear velocity reset procedure for lowering the recording linear velocity from the stop recording linear velocity to a predetermined recording linear velocity and resetting the recording linear velocity, and a recording linear velocity reset by the recording linear velocity reset procedure The recording power was determined by the test writing procedure in the once computer-readable recording medium storing a program for executing a resume recording restart procedure records without continuous information is interrupted at the stop point. A procedure for writing information at a substantially constant linear density in the circumferential direction of the disc-shaped recording medium on the computer, and performing a test writing at a predetermined basic linear velocity on a predetermined area of the disc-shaped recording medium at the basic linear velocity. A test writing procedure for determining the optimum recording power, and a predetermined recording state target value during recording of information on the disc-shaped recording medium was compared with a value corresponding to a reproduction signal from the disc-shaped recording medium. A recording power correction procedure for correcting the recording power at any time in accordance with the result; and, when the recording power exceeds a predetermined maximum output value by the recording power correction procedure, the recording is temporarily stopped, and after a predetermined time interval, the recording power is temporarily stopped. A recording stop procedure for repeating a process of restarting recording at a recording linear velocity a predetermined number of times; When the output value exceeds the large output value, the recording linear velocity is reset from the recording linear velocity at the time of the temporary stop by the recording stop procedure to a predetermined recording linear velocity, and the recording linear velocity is reset. After determining the recording power at the set recording linear velocity by the test writing procedure, a computer readable recording of a program for executing a recording restart procedure of restarting recording without interruption of the continuous information at the temporary stop point Recording medium. A procedure for writing information at a substantially constant linear density in the circumferential direction of the disc-shaped recording medium on the computer, and performing a test writing at a predetermined basic linear velocity on a predetermined area of the disc-shaped recording medium at the basic linear velocity. A test writing procedure for determining the optimum recording power, and a predetermined recording state target value during recording of information on the disc-shaped recording medium was compared with a value corresponding to a reproduction signal from the disc-shaped recording medium. A recording power correction procedure for correcting the recording power as needed according to the result; and temporarily stopping the recording when the correction amount of the recording power by the recording power correction procedure exceeds a predetermined amount, and re-executing the test writing by the test writing procedure. A computer-readable recording medium on which a program for executing a recording restart procedure of setting recording power obtained by the above and restarting recording is executed. A step of writing information at a substantially constant linear density in a circumferential direction of the disk-shaped recording medium at a predetermined linear velocity different for each of a plurality of recording zones provided in a radial direction of the disk-shaped recording medium in the computer; A test writing procedure of performing test writing at a predetermined basic linear velocity on a predetermined area of the disk-shaped recording medium to determine an optimum recording power at the basic linear velocity, and a predetermined recording state during recording of information on the disk-shaped recording medium. A recording power correction procedure of comparing a target value with a value corresponding to a reproduction signal from the disk-shaped recording medium and correcting a recording power as needed according to the comparison result; and a new recording at a switching point of the recording zone. The recording power immediately before the switching corrected by the recording power correction procedure during the recording to the immediately preceding recording zone as the recording power of the zone is a predetermined value. The recording power is estimated from the result of the recording power determination processing, and when it is determined that the recording power exceeds the predetermined maximum recording power, a procedure for continuing recording without stopping while maintaining the immediately preceding recording speed is executed. A computer-readable recording medium on which a program for causing a computer to execute is recorded. A step of writing information at a substantially constant linear density in a circumferential direction of the disk-shaped recording medium at a predetermined linear velocity different for each of a plurality of recording zones provided in a radial direction of the disk-shaped recording medium in the computer; A test writing procedure of performing test writing at a predetermined basic linear velocity on a predetermined area of the disk-shaped recording medium to determine an optimum recording power at the basic linear velocity, and a predetermined recording state during recording of information on the disk-shaped recording medium. A recording power correction procedure for comparing a target value with a value corresponding to a reproduction signal from the disk-shaped recording medium and correcting the recording power as needed according to the comparison result, and stopping recording at a switching point of the recording zone. The recording power immediately before the switching corrected by the recording power correction procedure during the recording to the immediately preceding recording zone as the recording power of the new recording zone. On the other hand, the recording power is estimated from the result of performing the predetermined recording power determination processing, and when it is determined that the recording power exceeds the predetermined maximum recording power, the recording obtained by re-executing the test writing according to the test writing procedure is performed. A computer-readable recording medium recording a program for executing a recording restart procedure for setting power and restarting recording. An information processing apparatus comprising the information recording apparatus according to claim 1.

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