JP2938363B2 - Information storage and playback device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information storage / reproducing apparatus for optically or magnetically storing information on a disk-shaped or tape-shaped storage medium and reproducing the stored information.

[0002]

2. Description of the Related Art Conventionally, an information storage / reproducing apparatus for reproducing information optically or recording information magnetically, such as a so-called mini-disc (hereinafter abbreviated as "MD"), has a disk-shaped storage. The surface of the medium is irradiated with a laser beam to optically read a signal from the reflected light or to perform heating for magnetically writing information. In order to store information at a high density in a disk-shaped storage medium or to read information stored at a high density, it is necessary to accurately adjust the focus and irradiation position of the optical system.

For this reason, in an optical disk reproducing apparatus such as an MD, various servo controls are performed. For example, a tracking servo that controls the optical pickup to follow the signal recording section of the storage medium, a focus servo that focuses on the optical system, a disk rotation servo that controls the rotation speed of the disk-shaped storage medium, There is a feed servo for moving an optical pickup to a designated information storage location to reproduce and store information.

[0004] The prior art related to autofocus is:
For example, it is disclosed in JP-A-59-36333. Prior art regarding tracking servo is disclosed in, for example, Japanese Patent Application Laid-Open No. 3-105727. Prior art for automatically adjusting the gain of a servo control circuit is disclosed in, for example, JP-A-3-259427 and JP-A-5-89619. A prior art in which self-adjustment is periodically performed at the time of starting reproduction of a disk reproducing apparatus, for example, is disclosed in
3496. Japanese Patent Application Laid-Open No. 6-302104 discloses a prior art in which adjustment is also made during a pause period during reproduction from a storage medium or during a storage operation.

[0005]

SUMMARY OF THE INVENTION In an information storage / reproducing apparatus for reproducing information from a high-density storage medium such as an MD or storing information, it is possible to prevent variations in the characteristics of the storage medium and changes over time in equipment. For this purpose, it has various servo control mechanisms and has a self-adjustment function. When reproducing the stored contents from the MD disk under appropriate conditions, it is necessary that various servo control parts are adjusted to a preferable state.

However, the above-mentioned Japanese Patent Application Laid-Open No.
It takes time to perform self-adjustment periodically at the start of disk playback, such as at 96, and even if a user such as an MD disk playback device instructs to start playing, it takes time until the performance is started and the sound is output. There is a disadvantage that the time required is long. Further, if the self-adjustment is performed even during the suspension period of the optical head during the recording or reproducing operation as in the prior art of Japanese Patent Application Laid-Open No. 6-302104, the pause time is extended for the user, and the waiting time is increased. Become.

An object of the present invention is to provide an information storage / reproducing apparatus capable of reducing the time required for self-adjustment and promptly responding to a user operation.

[0008]

SUMMARY OF THE INVENTION The present invention relates to an information storage / reproduction apparatus having a function of self-adjusting so that storage or reproduction can be properly performed prior to storing or reproducing information in a removable storage medium. Responding to an output from the attachment / detachment detecting means for detecting attachment / detachment of the storage medium,
The state of attachment or detachment of the storage medium is recorded, and the first determination means for determining whether the storage or reproduction of information on the storage medium is the first for the storage medium, and the output from the first determination means Control means for performing self-adjustment during the first storage or reproduction of the storage medium, and not performing self-adjustment during the second or subsequent storage or reproduction of the storage medium. An information storage / reproducing device characterized by the following. Further, the present invention provides an information storage / reproduction device having a function of performing self-adjustment for a plurality of predetermined adjustment items so that storage or reproduction can be properly performed prior to storing or reproducing information in a removable storage medium, A change storage means for storing a change in each adjustment item; and a change storage means for performing a new self-adjustment, and based on a change for each adjustment item, a change exceeding a predetermined reference among a plurality of adjustment items. And a control means for performing a self-adjustment only for an adjustment item having a large value. Further, the present invention relates to an information storage / reproducing apparatus having a function of performing self-adjustment so that storage or reproduction can be properly performed prior to storing or reproducing information in a removable storage medium. A self-adjustment based on an expected value setting means for setting an expected value of convergence that is expected to converge in a short time, and performing self-adjustment based on the expected value of convergence recorded in the expected value setting means. And control means for setting an adjusted value converged to the expected value setting means as an expected convergence value. Still further, the present invention determines, after the self-adjustment, whether a predetermined temporal condition including at least one of elapse of a predetermined time, elapse of a predetermined reproduction time, and counting of a predetermined number of times of reproduction is satisfied or not satisfied. It is provided with time-lapse condition detection means for detecting, and the control means refers to the time-lapse condition detection means and performs control so as not to perform self-adjustment when the time-lapse condition is not satisfied. Furthermore, the present invention further includes abnormality detecting means for detecting an abnormality of the apparatus, wherein the control means refers to the abnormality detecting means, and when an abnormality of the apparatus is detected, prior to the next storage or reproduction in the storage medium, It is characterized by performing self-adjustment.

[0009]

According to the present invention, when the attachment / detachment of the storage medium is detected by the attachment / detachment detection means, and when the information is first stored or reproduced in the newly attached storage medium, the output from the first time judgment means is output. In response, the control means performs a self-adjustment prior to storing or reproducing the information. When the first-time determination means determines that it is the second time or later, the control means does not perform self-adjustment. If self-adjustment is performed for the same storage medium for the first time, information can be stored and reproduced in a good state without performing self-adjustment again for the second or subsequent storage or reproduction. By omitting the adjustment, storage and reproduction can be started quickly.

According to the present invention, in the information storage / reproducing apparatus, changes in a plurality of adjustment items are stored in change storage means. When performing a new self-adjustment, the control means performs a self-adjustment only on an adjustment item having a change larger than a predetermined reference among a plurality of adjustment items based on a change for each adjustment item. If an adjustment item having a small change is known in advance, the adjustment for the item may not be performed. For adjustment items with small changes,
Since information can be stored and reproduced under appropriate conditions without performing self-adjustment again, the time required for self-adjustment can be shortened and the time required for self-adjustment can be shortened compared to the case of self-adjustment of multiple adjustment items. Storage and reproduction of information can be started.

According to the present invention, when the control means performs the self-adjustment, the control means performs the self-adjustment based on the expected convergence value set in the expected value setting means. The expected convergence value is an adjustment value that is expected to cause the adjustment to converge in a short time. By starting self-adjustment from such an adjustment value, the time required for self-adjustment can be reduced, and information can be quickly stored. And playback.

Further, according to the present invention, the time-dependent condition detecting means detects whether a predetermined time-dependent condition is satisfied or not satisfied after self-adjustment. The temporal conditions include, for example, a lapse of a simple time, a lapse of a net time of storing and reproducing information, and the number of times of storing and reproducing information. If such a temporal condition progresses, the deviation from the state once self-adjusted increases, and it becomes necessary to newly perform self-adjustment. When the time-dependent condition is not satisfied, the time can be reduced by not performing the self-adjustment.

According to the invention, when the abnormality detecting means of the apparatus detects the abnormality, the control means performs self-adjustment prior to storing or reproducing the next storage medium. When an abnormality is detected, self-adjustment can be reliably performed, and information can be stored and reproduced in an appropriate state.

[0014]

FIG. 1 shows a schematic electrical configuration of an MD player according to a first embodiment of the present invention. The MD 1 is attached to or detached from the disk mounting unit by a loading mechanism (not shown). The attachment / detachment detection means 2 detects the attachment / detachment state of the MD 1. The disk motor 3 drives the MD 1 mounted on the disk mounting unit at a predetermined rotation speed. M
The surface of D1 is irradiated with laser light from the optical pickup 4, and the information stored in MD1 is read as reflected light. The information read by the optical pickup 4 is amplified to a predetermined level by the preamplifier 5, sent to the signal conversion circuit 6, and input to the tracking error detection circuit 7, the focus error detection circuit 8, and the disk rotation servo circuit 9. .

The tracking error detection circuit 7 detects a tracking error in which the focal position of the read light beam emitted from the optical pickup 4 deviates inward or outward from the signal recording track of the MD 1, and outputs it to the tracking servo circuit 10. Tracking servo circuit 10
The operation or non-operation is controlled to be switched by a control signal output from the microcomputer 11. In the operation state of the tracking servo circuit 10, in response to a signal from the tracking error detection circuit 7, a tracking adjustment actuator (not shown) is driven so that the read light beam follows the signal recording track of the MD1. A large movement that cannot be followed by the tracking adjustment actuator is performed by operating the pickup feed servo circuit 12 in response to a signal from the tracking error detection circuit 7. The pickup feed servo circuit 12 drives a feed motor of a pickup feed mechanism (not shown) to move the optical pickup 4 to a predetermined position.

The focus error detecting circuit 8 detects from the output of the optical pickup 4 that the focal position of the read light beam is shifted forward or backward on the optical axis from the signal recording track of the MD 1, and outputs it to the focus servo circuit 13. I do. The operation or non-operation of the focus servo circuit 13 is controlled by a control signal output from the microcomputer 11. Focus servo circuit 13
In the operation state of (1), in response to a signal from the focus error detection circuit 8, the focus adjustment is performed by moving the objective lens (not shown) of the optical pickup 4 in the optical axis direction by the focus actuator.

The disk rotation servo circuit 9 performs a servo operation for controlling the rotation speed of the disk motor 3 so that the frequency of the internal reference signal and the frequency of the synchronization signal included in the output signal of the optical pickup 4 match. Do. At the start of reproduction, a kick-up operation is performed in which the disk motor 3 is driven to start rotating until a predetermined number of rotations is reached. There is no operation other than the servo operation and the kick-up operation, and the three operation states are switched by a control signal output from the microcomputer 11.

The signal conversion circuit 6 performs error correction and EFM demodulation processing on the signal from the optical pickup 4 to convert the signal into a digital audio signal, and sends the signal to an analog circuit via a digital / analog converter (not shown). At the same time, the sub-code, which is a control signal mixed with the digital audio signal and recorded, is extracted and output to the microcomputer 11. In addition, the signal conversion circuit 6
Outputs an error signal to the microcomputer 11 when a signal cannot be read normally due to a scratch on the MD1 or when there is an abnormality in the extracted subcode. Further, the signal conversion circuit 6 inputs a digital audio signal obtained by converting an audio signal to be stored in the MD 1 through an analog-to-digital converter (not shown), and a magnetic head 15 through a head drive circuit 14. Performs data processing when driving.

The self-adjustment performed by the microcomputer 11 includes servo gains in the disk rotation servo circuit 9, tracking servo circuit 10, pickup feed servo circuit 12, focus servo circuit 13 and the like, and offset values and control target values of the servo circuits. The setting is made. In addition, setting of the balance between the outputs of the two optical detection elements provided in the optical pickup 4 for detecting a tracking error and the frequency of a reference signal inside the disk rotation servo circuit 9 are also performed. Although the self-adjustment is basically performed at the time of starting the performance of reproducing new information from the MD 1 or at the time of starting recording of information, in this embodiment, a timer circuit is used to reduce the time required for the self-adjustment. The self-adjustment is performed at an appropriate timing with reference to the memory 18, the memory 19, the temperature detection circuit 20, and the like. In addition, MD for reproduction only
In the case of a player, the configuration related to the magnetic head 15 is unnecessary.

FIG. 2 shows the operation of the embodiment of FIG. When a performance command for reproducing MD1 is input from the operation keys 17, the operation starts from step a1. At step a2, it is determined whether or not the performance is the first performance after the insertion of the MD1. The attachment / detachment of the MD 1 is detected by the attachment / detachment detecting means 2, and the result is recorded in the memory 19. Microcomputer 1 constituting initial determination means together with memory 19
1 records, for example, a state in which a new MD1 is mounted and a state in which the mounted MD1 is detached.
When the data is reproduced or stored from the computer, data for discrimination is recorded.

With the MD 1 mounted, the operation keys 17
When an input to start the operation of MD1 is given from, the operation is started from step a1. In step a2, reproduction of information from MD1 corresponding to the operation is performed in MD1.
Is determined to be the first performance after the insertion. The attachment / detachment detecting means 2 detects the attachment or detachment of the MD 1 and sends a detection signal to the microcomputer 11 when the MD 1 is newly attached. The microcomputer 11 records data indicating that the MD 1 is newly mounted in the memory 19 serving as the initial determination unit. The microcomputer 11 further responds to the input from the operation key 17 to
When starting the performance of No. 1, it is determined by referring to the recorded contents of the memory 19 whether or not it is the first storage or reproduction after mounting. Microcomputer 11 as control means
Records data representing the first performance in the memory 19. If the data has already been recorded in the memory 19, the microcomputer 11 determines that the performance is not the first performance, and performs a performance by reproducing information from the MD 1 according to the set value of the previous adjustment result in step a3.

If it is determined in step a2 that the performance will be performed first after the MD1 is inserted, the process proceeds to step a4.
Perform self-adjustment for each servo circuit, etc. In step a5, the adjustment result is stored in the memory 19, and can be used when referring to the previous adjustment result in step a3. When step a5 or step a3 is completed, the performance by reproducing the information from MD1 is started according to the set value, and the operation is ended in step a7.

FIG. 3 shows the operation according to the second embodiment of the present invention. This operation is performed based on the same electrical configuration as in FIG. In the present embodiment, it is possible to select whether the self-adjustment is performed for all items or only some items having a large change. The adjustment result is stored in the memory 19 of FIG. 1 as shown in step a5 of FIG. 2, and the magnitude of the change amount may be calculated based on the results of the self-adjustment performed a plurality of times. . Step b
After the operation starts in step 1, it is determined in step b2 whether or not the mode is a partial item adjustment mode. When it is determined that the mode is the partial item adjustment mode, the self-adjustment is performed only for a predetermined part of the adjustment items in step b3.
It is known in advance that among the adjustment items for performing the self-adjustment, the values of the frequency of the reference signal of the disk rotation servo circuit 9 and the offset value of the servo circuit are hard to change. The self-adjustment for such hard-to-change adjustment items may be omitted, and the self-adjustment may be performed only for adjustment items such as servo gains that change each time the disk is replaced. At this time, a value set at the time of factory shipment is set for an adjustment item for which self-adjustment is not performed. In addition, the self-adjustment may be performed only on the adjustment items whose change amount at the time of adjustment is larger than a predetermined reference. If it is determined in step b2 that the mode is not the partial item adjustment mode, all items are adjusted in step b4. When step b3 or step b4 ends, the performance starts in step b5, and the operation ends in step b6. It should be noted that the adjustment result is stored in the memory 19 even after the adjustment in step b3 and step b4 is performed.

FIG. 4 shows the operation of the third embodiment of the present invention. This embodiment is also performed based on the same configuration as in FIG.
In the present embodiment, at the time of self-adjustment, an adjustment value expected to quickly converge is set in advance, and recursive feedback adjustment is performed to reduce the time required until final convergence. After the operation is started in step c1, an adjustment value for which convergence is expected is set in step c2. In step c3, self-adjustment is started based on the adjustment value expected to converge,
The operation ends at step c4.

FIG. 5 shows the operation of the fourth embodiment of the present invention. This embodiment is also performed based on the same configuration as in FIG.
In the present embodiment, after the operation is started in step d1, it is determined in step d2 whether a predetermined re-adjustment time has elapsed since the previous self-adjustment. The elapsed time is measured by the timer circuit 18 in FIG. If the elapsed time is shorter than the reference, the process proceeds to step d3, and the adjustment portion is set using the previous adjustment value stored in the memory 19. When it is determined in step d2 that the re-adjustment time has elapsed, the process proceeds to step d4, and self-adjustment is performed. As for the adjustment items for which the self-adjustment is performed, all of the plurality of adjustment items may be performed, or all or some of the items may be switchable as in the embodiment of FIG. In step d5, the adjustment result is stored in the memory 19, and in step d6,
The elapsed time of the timer 18 is initialized, and the measurement of the elapsed time is started again. When the operation in step d3 or d6 is completed, the performance is started in step d7, and the operation is ended in step d8. Thus, it is possible to adjust a temporal change of the device due to a member that changes with elapsed time or temperature, such as a spring that supports a lens in the optical pickup.

FIGS. 6 and 7 show the operation according to the fifth embodiment of the present invention. The operation of the present embodiment is also performed based on the same configuration as in FIG. In FIG. 6, the operation is started from step e1, and in step e2, it is determined whether or not the readjustment time has elapsed before the performance starts based on the elapsed time measurement value of the timer 18. When it is determined that the re-adjustment time has not elapsed, the setting is performed using the previous adjustment value stored in the memory 19 in step e3. When it is determined in step e2 that the readjustment time has elapsed, self-adjustment is performed in step e4, and the adjustment result is stored in the memory 19 in step e5. In step e6,
The elapsed time measurement value of the timer 18 is initialized, and the measurement of the elapsed time is started again. When the operation in step e3 or e6 is completed, the routine proceeds to step e7, where the performance is started, and the operation is completed in step e8.

After the start of the performance in step e7, an operation of measuring the elapsed time of the timer 18 shown in FIG. 7 is performed. After starting the operation in step f1, in step f2 MD
It is determined whether or not the performance of reproducing information for No. 1 and the storage of information are continuously performed. If it is determined that the performance is being performed, the elapsed time measurement is continued in step f3. If it is determined in step f2 that the performance is stopped, the measurement of the elapsed time is interrupted in step f4. After step f3 or step f4, the operation ends in step f5. The operations from step f1 to step f5 are continuously performed after the measurement is started in step e6 in FIG. 6 and until the next initialization.

FIG. 8 shows the operation of the sixth embodiment of the present invention. The operation of the present embodiment is also performed based on the same configuration as in FIG. The operation starts from step g1, and in step g2, it is determined whether or not the number of performances has exceeded a predetermined number. The performance includes not only the reproduction of the information from the MD 1 but also the storage of the information. The recording of the number of times is performed using a register and a memory 19 in the microcomputer 11. If it is determined in step g2 that the number of times of performance has not exceeded the limit value, setting is performed using the previous adjustment value in step g3. When it is determined in step g2 that the number of performances has elapsed, self-adjustment is performed in step g4. In step g5, the adjustment result is stored in the memory 19, and in step g6, the number of performances is initialized to zero. When Step g6 or Step g3 is completed, Step g7
Increases the number of performances by one, starts the performance in step g8, and ends the operation in step g9.

In the fourth, fifth and sixth embodiments described above, the self-adjustment is performed after a certain time-dependent condition is satisfied. The time-dependent condition is a simple elapsed time in the fourth embodiment, a net performance time in the fifth embodiment, and the number of performances in the sixth embodiment. While these temporal conditions do not progress very much, even if the adjustment value is set using the result of the self-adjustment, it is expected that the deviation from the appropriate adjustment value condition will not be large, and the time required for the self-adjustment will be small. , The response to the operation key 17 can be speeded up. As for the adjustment items for which the self-adjustment is performed, all the adjustment items may be performed, or an operation state in which only some of the adjustment items are performed as in the second embodiment may be provided.

FIGS. 9 and 10 show the operation of the seventh embodiment of the present invention. The operation of the present embodiment is also performed based on the same configuration as in FIG. At the start of the performance at step h1, it is determined at step h2 whether or not this is the first performance after the occurrence of the abnormality. The abnormalities with respect to the MD player include, for example, abnormal rise and fall of the temperature detected by the temperature detection circuit 20, defocusing of the read light beam, and the inability to search tracks or read signals. In particular, since the MD player reproduces and stores high-density information, if the temperature condition fluctuates greatly, the adjustment of each part is greatly shifted. When it is determined that such an abnormality has occurred, or when an error signal is output from the signal conversion circuit, an abnormality occurrence flag provided in the memory 19 is set. In step h2, it is determined whether or not an abnormality has occurred based on the abnormality occurrence flag. If the abnormality occurrence flag is not set, it is determined that the performance is not the first performance after the occurrence of the abnormality, and normal adjustment processing is performed in step h3. The normal adjustment processing includes, for example, processing for shortening the self-adjustment time under certain conditions as in the first to sixth embodiments.
When it is determined in step h2 that the abnormality occurrence flag is set, self-adjustment is performed for all adjustment items in step h4. In step h5, the adjustment result is stored in the memory 19. In step h6, the set abnormality occurrence flag is cleared, and in step h2 when the next performance is started, it is determined that it is not the first performance after the occurrence of the abnormality. When step h3 or step h6 ends, the operation ends in step h7.

FIG. 10 shows the operation related to the processing of the abnormality occurrence flag. The microcomputer 11 refers to an output from the temperature detection circuit 20, an error signal from the signal conversion circuit 6, and the like, and determines whether or not an abnormality has occurred in step i2 after the operation in step i1 starts. When it is determined that an abnormality has occurred, if a performance is being performed in step i3, stop processing is performed. At step i4, an abnormality occurrence flag is set. When it is determined in step i2 that no abnormality has occurred, or when step i4 ends, the operation ends in step i5. According to such an embodiment, self-adjustment is reliably performed for all items after the occurrence of an abnormality,
It is possible to store or reproduce information under appropriate conditions.

In each of the above embodiments, an MD player for reproducing or storing information on the MD 1 has been described. However, a disk-shaped recording device for optically reading information, such as a CD or a so-called laser disk, which is abbreviated as an LD. An information storage / reproduction device using a medium can be similarly applied. Further, the present invention can be similarly applied to a tape-shaped magnetic storage medium such as a digital audio tape (abbreviated as "DAT") if there is a specification for self-adjustment such as azimuth adjustment.

[0033]

As described above, according to the present invention, when information is first stored or reproduced in a storage medium, self-adjustment is performed prior to the operation, so that information can be reliably stored under appropriate conditions. And playback can be performed. Since self-adjustment is not performed at the time of storage and reproduction for the second and subsequent times, information can be stored and reproduced quickly.

Further, according to the present invention, at the time of self-adjustment, only the adjustment item having a large change among a plurality of adjustment items is adjusted. Thus, the overall time required for the self-adjustment can be reduced, and a quick response to the operation can be realized.

Further, according to the present invention, the self-adjustment is performed based on the expected convergence value which is expected to quickly converge in advance during the self-adjustment. Becomes possible.

Still further, according to the present invention, once the self-adjustment is performed, the next self-adjustment is performed after the lapse of a predetermined time, the lapse of a predetermined reproduction time, and the predetermined number of reproductions. This is a time point prior to storage or reproduction from a storage medium after a temporal condition including at least one of the conditions is satisfied. During that time, self-adjustment is not performed, so that a quick response to an operation is possible. Become.

Furthermore, according to the present invention, when an abnormality of the apparatus is detected, the self-adjustment is performed prior to the next storage or reproduction of information from the storage medium, so that the state adjusted to the appropriate condition can be obtained. Thus, information can be securely stored and reproduced.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an electrical configuration of a first embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the first embodiment of the present invention.

FIG. 3 is a flowchart showing the operation of the second embodiment of the present invention.

FIG. 4 is a flowchart showing the operation of the third embodiment of the present invention.

FIG. 5 is a flowchart showing the operation of the fourth embodiment of the present invention.

FIG. 6 is a flowchart showing the operation of the fifth embodiment of the present invention.

FIG. 7 is a flowchart showing a method of measuring a net elapsed time of a performance in the fifth embodiment.

FIG. 8 is a flowchart showing the operation of the sixth embodiment of the present invention.

FIG. 9 is a flowchart showing the operation of the seventh embodiment of the present invention.

FIG. 10 is a flowchart showing an operation when an abnormality occurs in a seventh embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 MD 2 Detachment detection means 4 Optical head 6 Signal conversion circuit 7 Tracking error detection circuit 8 Focus error detection circuit 9 Disk rotation servo circuit 10 Tracking servo circuit 11 Microcomputer 12 Pickup feed servo circuit 13 Focus servo circuit 17 Operation key 18 Timer circuit 19 memory 20 temperature detection circuit

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification symbol FI G11B 19/02 501 G11B 19/02 501S (72) Inventor Kyoji Mizuno 22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka Sharp Corporation (56) References JP-A-6-131829 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) G11B 19/10 G11B 7/09 G11B 11/10 G11B 19/02

Claims (5)

(57) [Claims] 1. An information storage / reproducing apparatus having a function of self-adjusting so as to perform storage or reproduction properly before storing or reproducing information in a removable storage medium. In response to the output from the detection means and the attachment / detachment detection means, the state of attachment or detachment of the storage medium is recorded, and whether storage or reproduction of information on the storage medium is first for the storage medium is determined. And a self-adjustment at the time of the first storage or reproduction on the storage medium, and at the time of the second or subsequent storage or reproduction on the storage medium, in response to the output from the first determination means. Control means for controlling so as not to perform self-adjustment. 2. An information storage / reproducing apparatus having a function of self-adjusting a plurality of predetermined adjustment items so that storage or reproduction can be properly performed before information is stored or reproduced on a removable storage medium. A change storage means for storing the change of each adjustment item; and a change storage means for newly performing self-adjustment,
Based on the change for each adjustment item,
Control means for controlling the self-adjustment only for adjustment items whose change is larger than a predetermined reference. 3. An information storage / reproducing apparatus having a function of performing self-adjustment so that storage or reproduction can be properly performed prior to storing or reproducing information on a removable storage medium. An expectation value setting means for setting an expected convergence value that is expected to converge in a short time; and performing self-adjustment based on the expected convergence value recorded in the expectation value setting means. Control means for setting the adjustment value converged to the expected value setting means as the expected convergence value. 4. Elapse of a predetermined time after self-adjustment,
A time-lapse condition detecting means for detecting whether a predetermined time-dependent condition including at least one of the elapse of a predetermined reproduction time and the counting of the predetermined number of times of reproduction is satisfied or not; The information storage / reproducing apparatus according to any one of claims 1 to 3, wherein the information storing / reproducing apparatus is controlled such that self-adjustment is not performed when the temporal condition is not satisfied, by referring to the detecting means. 5. An abnormality detecting means for detecting an abnormality of the apparatus, wherein the control means refers to the abnormality detecting means and, when an abnormality of the apparatus is detected, performs self-operation prior to the next storage or reproduction in the storage medium. The adjustment is performed.
4. The information storage / reproduction device according to any one of 4.