JPH09320004A - Recording and reproducing apparatus, and information equipment using the apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To uniformize the number of times of slides of a head on a disk by counting the number of times of the slider with the utilization of servo information. SOLUTION: The head 5 reads servo information signals 6 from a servo sector 3 every fixed time interval in accordance with the rotation of a disk 1. The signals 6 are sent to a head position detection circuit 7, so that a track position of the head 5 at each time is detected. A head position control circuit 8 executes with the use of the information of the track position a seek control to move the head 5 to the vicinity of a target data track 4 where information is recorded and reproduced and a follow-up control to position the head 5 correctly on the target data track 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing apparatus for recording and reproducing information with a recording / reproducing head in contact with an information recording medium, and an information device using the same.

[0002]

2. Description of the Related Art A magnetic disk device will be described as an example of a conventional recording / reproducing device. In a conventional magnetic disk device, a recording / reproducing head (hereinafter referred to as “head”) including a head slider equipped with a magnetic conversion element is
Information is recorded on the information recording medium (hereinafter referred to as "disk") that rotates at a high speed, and is levitated from the surface of the disk by the pressure generated by the viscosity of the air that rotates. Is recorded and played back. That is, since the head and the disk are not in contact with each other during operation of the magnetic disk device, there is no problem that the head and the disk slide and wear.

However, when the recording wavelength is shortened to improve the recording density, the output from the magnetic conversion element is reduced,
To compensate for this, it is necessary to reduce the flying height of the head to further reduce the distance between the magnetic conversion element and the magnetic disk. Therefore, many technical efforts have been made to reduce the flying height of the head. However, since there is a limit to lowering the flying height of the head, a magnetic disk device has recently been developed which employs a contact recording system for recording and reproducing a signal while the magnetic conversion element is in contact with the disk.

In the contact recording type magnetic disk apparatus, both the head and the disk may be worn because the head and the disk are constantly in contact and sliding. Therefore, in order to reduce the wear of the head and the disk, measures have been taken such as reducing the pressing load of the head as much as possible (see Japanese Patent Application Laid-Open No. 7-307069).

However, some wear of the disk and head is unavoidable. Regarding the wear of the head, it has been reported that some wear can be tolerated by constructing the magnetic conversion element portion so that the magnetic conversion function is not affected even if the head is worn to some extent ( For example, H. Hamilton, IEEE Trans. On Magn., Vol.27, No.
6 pp-4921-4926 (1991)).

On the other hand, regarding the wear of the disk,
It is fatal that the magnetic layer of the magnetic disk is damaged, and the progress of wear must be avoided as much as possible. However, if the head is frequently positioned in a specific area on the disk (for example, an area storing information for managing files recorded on the disk),
In a contact recording type magnetic disk device, wear may progress in a specific area.

[0007]

As described above,
In a contact recording type recording / reproducing apparatus that records and reproduces information while the head is in contact with the disk, if the head slides in a specific area on the disk with high frequency, wear may progress in this specific area. There is a nature.

Therefore, in the present invention, a recording / reproducing apparatus having means for measuring the sliding load of the head on the disk, and the head concentrates on a specific area on the disk based on the information obtained by such means. An object of the present invention is to provide a recording / reproducing apparatus capable of avoiding sliding and preventing wear from progressing in a specific area thereof, and an information device using the same.

[0009]

In order to achieve the above object, according to the present invention, an information recording medium rotatably provided and a recording / reproducing head for recording and reproducing information in a state of being in contact with the information recording medium. And a recording / reproducing apparatus comprising: a recording / reproducing apparatus including: a measuring unit configured to measure a sliding load of the recording / reproducing head on the information recording medium; In an information device to which a recording / reproducing apparatus equipped with a recording / reproducing head for recording and reproducing information in contact with the information recording medium can be connected, a sliding load of the recording / reproducing head on the information recording medium is set. (EN) Provided is an information device having a measuring unit for measuring and a storing unit for storing information measured by the measuring unit.

Further, the above-mentioned recording / reproducing apparatus and information equipment further have the following features. The measuring means may use the servo information recorded on the information recording medium to count the number of slides of the recording / reproducing head.

Further, the measuring means uses the servo information recorded on the information recording medium to count the number of times of sliding of the recording / reproducing head, and the number of times of sliding depends on the sliding condition. Weighting may be performed.

Further, it may have an information rearranging means for rearranging the information recorded on the information recording medium based on the information measured by the measuring means. Further, the information rearranging means may move the information recorded in the area where the sliding load of the recording / reproducing head is large on the information recording medium to the area where the sliding load is small.

Further, the information rearranging means replaces information recorded in an area on the information recording medium where the sliding load of the recording / reproducing head is large with information recorded in an area where the sliding load is small. It may be one.

Further, the relocation means may relocate the information so that the seek distance of the head is shortened by bringing the regions of the recording / reproducing head where the sliding number is large as close as possible. .

Further, it may have a means for changing the number of rotations of the information recording medium based on the information measured by the measuring means. Further, based on the information measured by the measuring means and the information regarding the quality of the signal reproduced by the recording / reproducing head, an area in which an unrecoverable defect has occurred on the information recording medium is detected, and this area is detected. Further, processing for prohibiting the recording / reproducing head from being positioned may be performed.

[0016]

Embodiments of the present invention will be described in detail with reference to the drawings. First, as an example of the recording / reproducing apparatus according to the present invention, an outline of a magnetic disk device will be described with reference to FIG.

FIG. 1 schematically shows a magnetic disk device using a rotary actuator. The disk 201 is mounted on a spindle 202 and rotated at a predetermined rotation speed. A head 20 equipped with a recording / reproducing element for recording / reproducing information in a state of being in contact with the disk 201.
3 is attached to one end of the head support mechanism 204 in the longitudinal direction. On the other hand, the other end of the head support mechanism 204 in the longitudinal direction is connected to the actuator arm 205 via the attachment portion.
Is connected to one end. Further, a voice coil motor 206, which is a kind of linear motor, is provided at the other end of the actuator arm 205. The voice coil motor 206 is composed of a drive coil (not shown) wound around the bobbin of the actuator arm 205, and a magnetic circuit composed of a permanent magnet and a facing yoke that are arranged to face each other so as to sandwich the drive coil. The actuator arm 205 is held by ball bearings (not shown) provided at two positions above and below the fixed shaft 207, and can be freely rotated and rocked by the voice coil motor 206.

The present invention is not limited to the magnetic disk device using the rotary actuator described above, but is widely applied to other magnetic disk devices using a linear actuator or the like and other recording / reproducing devices having the same structure. Is possible.

Next, a first embodiment of the recording / reproducing apparatus having means for measuring the sliding load of the head on the disk will be described. FIG. 2 shows an outline of means for counting and storing the number of times the head slides on the disk in the magnetic disk apparatus which is the recording / reproducing apparatus according to the present invention.

In a contact recording type magnetic disk device for recording and reproducing information in a state where the head 5 is in contact with the disk 1, for example, an area in which information for managing a file on the disk 1 is stored in another area. Since the head 5 is positioned more frequently than the area and the head 5 slides repeatedly, wear may progress faster. In order to prevent this, the sliding load of the head 1 is measured by some method, and based on the information, for example,
It is desirable to issue a warning to the operator or take some measures to prevent the head 5 from repeatedly sliding on a specific area on the disk.

However, until now, recording and reproducing were generally performed in the state where the head 5 was not in contact with the disk 1, so that it is not possible to measure the sliding load of the head 5 on the disk 1. I haven't been.

Therefore, in this embodiment, the number of times the head 5 slides on each portion of the disk 1 is counted by using the servo information recorded on the disk 1, and the information is stored by storing this information. There is provided means for measuring the sliding load of the head 5 on 1. Prior to the description of the means for measuring the sliding load, the details of the servo information recorded on the disk will be described first.

FIG. 3 is a conceptual diagram of a disc 1 which is an information recording medium which constitutes a recording / reproducing apparatus. As shown in the drawing, the data structure on the disk 1 is composed of data tracks 4 provided spirally or concentrically, and servo sectors 3 arranged in a spoke shape or a radial shape with a certain angular interval. . Here, the servo sector 3 records servo information on each data track 4. Data track 4 is servo sector 3
Is divided into a plurality of data sectors 2. As shown in the figure, the servo information of the servo sector 3 is position information,
The servo pattern is composed of a sync signal portion and an erase portion. The address on the corresponding data track 4 is determined by the position information therein. The position of the head on the disk is recognized based on such servo information.

Next, a method of counting the number of times the head 5 slides on each portion of the disk 1 by using the servo information and storing this information will be described. Head 5
As the disk 1 rotates, the servo information signal 6 is read from the servo sector 3 at regular time intervals. This servo information signal 6 is sent to the head position detection circuit 7 and the track position of the head 5 at that time is detected. Using the position information thus obtained, seek control for moving the head 5 to the vicinity of the target data track 4 for recording and reproducing information, and positioning the head 5 accurately on the target data track 4 are performed. The head position control circuit 8 performs track follow-up control for this purpose. That is, the actuator 10 is driven by the signal from the head position control circuit 8 via the drive circuit 9, and the head 5 is positioned. The track position detection of the head 5 from the servo sector 3 is always performed while the disk 1 is rotating, that is, while the head 5 is sliding on the disk 1. Therefore, the number of times the head 5 slides on one data track 4 is measured by the sliding number counting circuit 11 using the track position information obtained for each servo sector 3 and stored in the memory 12. Moreover, it is possible to measure the number of sliding times in units of the data sector 2 instead of in the unit of the data track 4. Hereinafter, the specific method will be described with reference to FIG.

FIG. 4 is a conceptual diagram showing the relationship between the servo sector on the disk 1, the data sector, and the sliding portion of the head. It is assumed that there are n servo sectors from the 1st to the nth according to the rotation direction, and m data tracks from the inner circumference to the outer circumference (or vice versa) from the 1st to the mth. The data sector number sandwiched between the i-th servo sector and the i + 1-th servo sector on the j-th data track is (j−1) × n + i. The track position x of the head 1 obtained by the head position detection circuit 7 is x = j + 0.0 when the head is located on the center of the j-th data track, and j = j + 1.
X = j when the head is located at the center of the second data track
It is detected with an accuracy of 1 track or less, such as +0.5. Now, the track position x1 of the head 1 obtained in the i-th servo sector is j1-0.5 ≦ x1 <j1 + 0.5 of the j1-th data track, and the track position of the head obtained in the subsequent i + 1-th servo sector x2 is j2 of the j2th data track
It is assumed that −0.5 ≦ x2 <j2 + 0.5. At this time, the sliding frequency counting circuit 7 recognizes that the head exists on the j1th data track in the i-th servo sector and the j2th data track in the (i + 1) th servo sector. And further, from j1 to j2
(J1-1) × n + i number on the data track up to
It is recognized that each data sector of (j2-1) × n + i has slid. The memory has an area for storing the number of sliding times for all m × n data sectors, and the number of sliding times is added to the data sector for which sliding is recognized as described above. Will be done.

Next, more specific numerical values will be described with reference to FIG. The number of servo sectors n = 60, the number of data tracks m = 1000, and the track position of the head obtained in the third servo sector is x1 = 3.2.
Then, if the track position of the head obtained in the subsequent fourth servo sector is x2 = 6.8, in the sliding number counting circuit 7, the head moves to the third data track in the third servo sector, and the head moves to the third data track. In the second servo sector, it is recognized that it exists in the seventh data track, and further, it is recognized that the data sectors 123, 183, 243, 303, and 363 on the third to seventh data tracks are slid. And the number of sliding times of the area secured on the memory 12 corresponding to the data sector is 1
To be increased.

By the way, the i-th servo sector and i + 1
When two or more k data sectors are slid between the second servo sectors, the entire area is not slid in each data sector. In the above example, if these 5 data sectors are divided into 5 areas from 1st to 5th from the 3rd servo sector to the 4th servo sector, the 3rd servo sector in the 123rd data sector No. 1 area close to, and 183,24
As it becomes 3, ..., it will slide in the areas of Nos. 2 and 3. Therefore, it is possible to divide the data sector into smaller pieces and measure the number of times of sliding in the divided area. The number of divisions is the data track 5 which passes between two servo sectors due to the movement of the head 1.
It is sufficient to take the maximum value of. Further, the sum of the number of sliding times of the divided areas or the worst value may be treated as the number of sliding times of the data sector 5.

Next, a second embodiment of means for measuring the sliding load of the head by the recording / reproducing apparatus according to the present invention will be described. In this embodiment, the number of times the head 5 slides on each portion of the disk 1 is counted by using the servo information recorded on the disk 1, and the sliding load of the head is stored by storing this information. Regarding the points to measure,
This is similar to the above-described first embodiment. In this embodiment, when counting the number of sliding times of the head 5,
By weighting according to the sliding condition and counting the number of times of sliding, it is possible to more accurately evaluate the state of the sliding load accumulated in each part of the disk 1.

As the weighting method, for example, the weight is increased as the sliding speed is faster, or the weight is reduced when the head 5 only passes a part of the data sector due to the seek operation of the head 5. A method, a method of increasing the weight in a portion where the signal quality is deteriorated, and a combination thereof are conceivable.

Next, a third embodiment of means for measuring the sliding load of the head by the recording / reproducing apparatus according to the present invention will be described with reference to FIG. FIG. 6 shows a schematic configuration of a head used in a contact recording type recording / reproducing apparatus. As shown in the figure, in the contact recording type head, the sliding width w at which the head and the disk (not shown) contact each other is wider than the track width p on which a signal is recorded.
Therefore, the head actually slides in the areas on both sides of the track obtained from the servo information. Therefore,
Even on tracks where the head is actually sliding on both sides of the track for which servo information has been obtained, the number of times of sliding is counted to grasp the number of times of actual sliding. It becomes possible to do.

Here, the sliding width is w and the track pitch is p.
Then, when it is detected by the servo signal that the head is located on the n-th track, the actually sliding track is regarded as the (n−m) th to (n + m) th tracks. Here, if m is an integer obtained by rounding up (w-p) / (2p), even if the head slides only a part of the track width at both ends of the sliding portion of the head, the head will not move the entire track width. The number of times of sliding is counted by assuming that the sliding has occurred. Also, m is (wp) /
When (2p) is an integer rounded off, when the head passes the width of more than half of the track at both ends of the sliding part, it is counted as the number of slides, and when the head passes the width of less than half of the track. Will not be counted as the number of slides. On the other hand, m is (wp) / (2p)
In the case where is a rounded down integer, when the head passes only a part of the track width, the number of sliding times is not counted. In addition, when m is an integer obtained by rounding down (w-p) / (2p), (w-p) / is used when counting the number of sliding times of the (n-m-1) th track and the (n + m + 1) th track.
1 / (2p) of the remainder of (2p) can be used as the weight.

Next, an embodiment of the present invention relating to means for taking some measures based on the information obtained as a result of measuring the sliding load of the head by the above-mentioned method will be described. First, as a fourth embodiment according to the present invention, the information recorded on the disk or the data file is rearranged or a warning is issued to the operator based on the information on the number of times of sliding of the head obtained by the above method. A means for performing the above will be described.

As shown in FIG. 2, in the present embodiment, a rearrangement circuit 13 is newly added. The rearrangement circuit 13 rearranges information based on the number of times of sliding in each portion on the disk 1 stored in the memory 12. Here, the rearrangement includes both the concept of moving a part of the information recorded on the disc and replacing the part of the information with the information of another part.

FIG. 7 shows a flow chart in the case of rearranging the information recorded on the disk based on the number of times of sliding of the head. The head position detection circuit 7 detects the head position from the servo information signal 6 on the disk 1 read by the head 5 (ST
1). The head sliding position is specified on the basis of this information (ST2), and after the sliding number is detected for each sector in the sliding number counting circuit, this sliding number is stored in the memory (ST3). Then, based on the information on the number of times of sliding stored in the memory, the sliding condition of each part on the disk is observed, and it is possible to judge whether the number of times of sliding of a specific part exceeds a predetermined value. (ST4). As a result, if the number of slides does not exceed the predetermined value and data rearrangement is not necessary, the process returns to ST1 described above (O
K). On the other hand, if the number of slides exceeds the predetermined value, the information recorded on the disc is rearranged (ST).
5).

In the present embodiment, for example, the information recorded in the area with the largest number of slides is moved to the area with the smallest number of slides based on the information on the number of slides of the head in each sector on the disk. . If the area with the least number of slides is empty, the contents recorded in the part with the most number of slides are moved to the portion with the least number of slides, and the area with the least number of slides is already in the area. When information is recorded, a process of exchanging the contents of the two is appropriately performed inside the magnetic disk device, so that the number of times of sliding in each area on the disk can be made uniform.

Further, as shown in FIG. 8, information on the number of times of sliding in each area on the disc is output to the information equipment side such as a personal computer to which the recording / reproducing apparatus is connected or mounted, and the disc is processed by the information equipment side. It is also possible to rearrange the information so that the number of times of sliding in each of the above regions is made uniform.

On the other hand, 1 recorded and reproduced on the disc
One data file is composed of a plurality of data blocks having individual identification information. Therefore, finally, the data files are rearranged so that the number of times of sliding does not exceed the predetermined value for each data block. Generally, one data block corresponds to one data sector. In this case, the data blocks are rearranged based on the sliding count value of each data sector. However, in recent years, due to the adoption of ZBR (Zone Bit Recording) or the like, one data block has a data format that covers a plurality of data sectors. In this case, the rearrangement is performed based on the sliding count value of the data sector in which the data block occupies the largest area.

Further, based on the information of the sliding load, the information is rearranged so that the track having a large number of sliding moves closer to each other, and the seek distance is shortened, so that the seek distance is shortened and the seek operation is performed. The number of traversing tracks may be reduced and the number of sliding tracks may be reduced.

Further, by providing a plurality of tracks (rest areas) on which the head is on standby without performing recording and reproduction, it is possible to reduce the concentration of sliding on a specific track. good.

In the present embodiment, information on the number of times of sliding of each portion on the disk, quality of reproduced signal (signal strength, resolution, etc.), error occurrence status of reproduction signal, error occurrence status of servo, spindle motor By making it possible to monitor the status (rise time, etc.) from the information equipment side such as a personal computer to which the magnetic disk device is connected or mounted, the information equipment side can judge the reliability of the disk.

For example, when the maximum value of the number of sliding times in each area on the disk exceeds a predetermined value and approaches the life of the disk, a warning signal is issued to the information device side to notify the information stored in the disk. A means for urging the operator of the device to back up and update the magnetic disk device may be provided. The warning means may be a warning sound or a warning display on the monitor.

At the same time as the warning is issued, the rotational speed control circuit 14 shown in FIG. 8 is used to reduce the rotational speed of the disk to, for example, 1/2 and switch the recording frequency to 1/2. it can. In the conventional floating recording type magnetic disk device, when the number of rotations of the disk is lowered, the flying height of the head is reduced, and the head comes into contact with the disk, thus degrading the reliability of the disk. However, in the contact recording type magnetic disk device, when the rotational speed of the disk is decreased, the sliding speed between the head and the disk is decreased, the progress of wear of the disk and the head is reduced, and the life of the disk is rather extended. . Since the life of the disk is extended in this way, it is possible to back up with sufficient margin even after the warning is issued. There is a problem that the reproduction signal strength of the head decreases when the relative speed of the head and the disk decreases, but regarding this problem, an MR head in which the size of the reproduction signal does not depend on the relative speed of the head and the disk is adopted. It can be solved by

Next, a fifth embodiment of the present invention will be described. In the present embodiment, if dust or a defect exists in a specific area on the disc, an error occurs in the read signal of the head at this location. Therefore, the fact that the dust or the defect on the disc can be detected as a signal error is used. It relates to means for taking some action based on signals.

In the contact recording method, it is desirable that the disk surface be as smooth as possible from the viewpoint of preventing head crash. However, depending on manufacturing conditions, usage conditions, etc., there may be a case where a defect occurs on the disk surface or dust such as abrasion powder adheres to make it difficult to record and reproduce information in an appropriate contact state. Therefore, when an error occurs in the same area on the disk multiple times by measuring the sliding load on the disk using the above-mentioned servo information and monitoring the read signal of the head in association with it, this error is Judging that the disc itself is not something that happened by accident, but some defect,
It is desirable to take some measures. This is because, particularly when the defect is a physical protrusion or a hole, if the head is repeatedly positioned on a track having the defect, it causes the progress of wear of the head and the disk.

Therefore, in the present embodiment, when a defect occurs in the read signal at the same location on the disk, the information stored in the remaining sectors on the track including the defect is saved in another track. A process for prohibiting the positioning of the head on the track where the defect occurs is performed to prevent damage to the head and the disk. When the sliding width of the head is wider than the track width, and if a defect occurs in the nth track, the information of the (n−m) th to (n + m) th tracks is saved to another track and the head is recorded on the track. Is required to be prevented from being positioned. Here, m is (w-p) / (2
p is the integer rounded up, w is the sliding width of the head, p
Is the track pitch.

Although the embodiments of the present invention have been described above, the present invention is not limited to the embodiments, and various modifications can be made without departing from the scope of the invention. It goes without saying that they may be used in an appropriate combination. ,

[0047]

As described above, according to the present invention,
In a contact recording type recording / reproducing apparatus that records and reproduces information in a state where the head and the disk are in contact with each other, the number of times the head slides in each area on the disk is counted and stored using servo information, and Based on the information thus obtained, it is possible to make the number of times of sliding on the disk uniform. In addition, the information on the number of times of sliding is output to the information device to which the recording / reproducing apparatus is connected or mounted to perform a process of preventing the information device from intensively sliding in a specific area, or sliding. It is possible to issue a warning about the life of the disk based on the number of times.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a magnetic disk device which is an example of a recording / reproducing device according to the present invention.

FIG. 2 is a block diagram of a recording / reproducing apparatus according to the present invention.

FIG. 3 is a conceptual diagram showing a data structure on a disc.

FIG. 4 shows a servo sector, a data sector, on the disk,
The conceptual diagram which shows a sliding part.

FIG. 5 is a conceptual diagram showing an example of data sectors corresponding to a plurality of data tracks.

FIG. 6 is a view showing a relationship between a track pitch and a sliding width of a head used in a contact recording type recording / reproducing apparatus.

FIG. 7 is a flowchart in the case where information recorded on a disk is moved, rearranged, or the like based on the number of times the head slides in the present invention.

FIG. 8 is a block diagram of an information device according to the present invention and a recording / reproducing device connected to the information device.

[Explanation of symbols]

 1 information recording medium (disk) 2 data sector 3 servo sector 4 data track 5 recording / reproducing head (head) 6 servo information signal 7 head position detection circuit 8 head position control circuit 9 drive circuit 10 actuator 11 sliding number counting circuit 12 memory 13 Rearrangement circuit 14 Rotation control circuit

Claims (22)

[Claims] 1. An information recording medium rotatably provided,
A recording / reproducing apparatus having a recording / reproducing head for recording and reproducing information in a state of being in contact with the information recording medium, having a measuring means for measuring a sliding load of the recording / reproducing head on the information recording medium. Recording / reproducing apparatus characterized by. 2. The recording / reproducing apparatus according to claim 1, further comprising a storage unit that stores information measured by the measuring unit. 3. The measuring means counts the number of sliding times of the recording / reproducing head using servo information recorded on the information recording medium. The recording / reproducing apparatus according to claim 2. 4. The measuring means uses the servo information recorded on the information recording medium to count the number of times of sliding of the recording / reproducing head, and the number of times of sliding depends on the sliding condition. The recording / reproducing apparatus according to claim 1, wherein weighting is performed. 5. The information rearranging means for rearranging information recorded on the information recording medium based on the information measured by the measuring means, according to any one of claims 1 to 4. Recording / reproducing apparatus 6. The information rearranging means moves the information recorded in an area where the sliding load of the recording / reproducing head is large on the information recording medium to an area where the sliding load is small. The recording / reproducing apparatus according to claim 5, which is characterized in that. 7. The information rearranging means replaces information recorded in an area where the sliding load of the recording / reproducing head is large with information recorded in an area where the sliding load is small on the information recording medium. The recording / reproducing apparatus according to claim 5, wherein the recording / reproducing apparatus is a device. 8. The rearrangement means rearranges information so that the seek distance of the head is shortened by bringing the regions of the recording / reproducing head that slide a lot closer to each other as much as possible. The recording / reproducing apparatus according to item 5. 9. The recording / reproducing apparatus according to claim 1, further comprising means for changing the number of rotations of the information recording medium based on the information measured by the measuring means. 10. An area in which an irrecoverable defect has occurred on the information recording medium is detected based on the information measured by the measuring means and the information regarding the quality of the signal reproduced by the recording / reproducing head. 10. The recording / reproducing apparatus according to claim 1, wherein processing for prohibiting positioning of the recording / reproducing head in this area is performed. 11. A recording comprising a rotatably provided information recording medium and a recording / reproducing head for recording and reproducing information in contact with the information recording medium, the recording being configured to be connectable to an external information device. In the reproducing apparatus, the recording / reproducing apparatus is provided with an instruction means for sending an instruction for measuring a sliding load of the recording / reproducing head on the information recording medium to the information equipment. 12. The instructing means sends the servo information recorded on the information recording medium to count the number of sliding movements of the recording / reproducing head. Recording and reproducing device. 13. An information device to which a recording / reproducing apparatus comprising a rotatably provided information recording medium and a recording / reproducing head for recording and reproducing information in contact with the information recording medium can be connected. An information device comprising: a measuring unit that measures a sliding load of the recording / reproducing head on an information recording medium; and a storage unit that stores information measured by the measuring unit. 14. The measuring means counts the number of times of sliding of the recording / reproducing head by using servo information recorded on the information recording medium. Information equipment. 15. The measuring means counts the number of times of sliding of the recording / reproducing head by using the servo information recorded on the information recording medium, and the number of times of sliding depends on the sliding condition. 14. Weighting is performed.
Information equipment described. 16. The information device according to claim 13, wherein a warning is issued based on the information measured by the measuring means. 17. The information rearranging means for rearranging the information recorded on the information recording medium based on the information measured by the measuring means, according to any one of claims 13 to 15. Information device described in crab. 18. The information rearranging means moves the information recorded in an area having a large sliding load of the recording / reproducing head on the information recording medium to an area having a small sliding load. The information device according to claim 17, which is characterized in that 19. The information rearranging means replaces information recorded in a region where the sliding load of the recording / reproducing head is large with information recorded in a region where the sliding load is small on the information recording medium. The information device according to claim 17, wherein the information device is a device. 20. The rearrangement means rearranges information so that a seek distance of the head is shortened by bringing areas of the recording / reproducing head that slide a lot closer to each other as close as possible. Item 17. The information device according to item 17. 21. The information equipment according to claim 13, further comprising means for changing the number of rotations of the information recording medium based on the information measured by the measuring means. 22. An area in which an irrecoverable defect has occurred on the information recording medium is detected based on the information measured by the measuring means and the information regarding the quality of the signal reproduced by the recording / reproducing head. The information device according to any one of claims 13 to 21, wherein processing is performed to prohibit positioning of the recording / reproducing head in this area.