JP2003123205A - Device and method for recording information, and information recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow addition of data postscript in an information recording device for recording/reproducing data of a capacity greater than that in the conventional case by overwriting. SOLUTION: This device is provided with an area of a track width where normal writing is carried out by a low-capacity magnetic head, and an area of a track width where overwriting is carried out by the low-capacity magnetic head to enable reading by only a high-capacity magnetic head. Thus, file entry information or the like is rewritten, and a file is additionally recorded.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording device, an information recording method and an information recording medium for recording data with a magnetic recording head.

[0002]

2. Description of the Related Art Conventionally, in an information recording apparatus having two types of heads, a low-capacity magnetic head and a high-capacity magnetic head, a low-capacity magnetic head writes a high-capacity track format on a low-capacity magnetic recording medium, The head reproduces a high-capacity track format on the low-capacity magnetic recording medium, and the high-capacity track format is written at a track interval narrower than the recording gap width of the low-capacity magnetic head, if desired. As a result, high capacity data can be recorded and reproduced on the low capacity magnetic recording medium.

[0003]

However, in the conventional information recording apparatus, when recording is performed using the low capacity magnetic head, the overwriting is performed so that the width becomes narrower than the gap of the head. Therefore, only the high-capacity magnetic head can read the written area. Further, the part for managing file information is usually recorded in the head track part. Therefore, in the case of the conventional information recording apparatus, the information management portion of the file is recorded by overwriting at the head portion, which makes it impossible to rewrite.
That is, the recording of information is one-time, and the recording device and format are such that additional recording is not possible.

The present invention has been made to solve the above problems, and is an information recording apparatus which is a large-capacity flexible disk apparatus capable of additionally writing a file,
An object is to provide an information recording medium and an information recording medium.

[0005]

In order to solve the above-mentioned problems, the present invention (Claim 1) has a low-capacity magnetic head and a high-capacity magnetic head, and the low-capacity magnetic head provides a low-capacity recording medium. In an information recording apparatus which is a large-capacity flexible disk device in which a high-capacity track format recorded on a low-capacity recording medium is reproduced by recording the high-capacity track format at an arbitrary track interval, A recording control unit is provided for performing recording so as to have a track width region in which normal writing is performed by the head and a track width region in which overwriting is performed by a low-capacity magnetic head and read only by a high-capacity magnetic head. It is a thing.

The present invention (claim 2) has a low-capacity magnetic head and a high-capacity magnetic head, and the low-capacity magnetic head records a high-capacity track format on a low-capacity recording medium at an arbitrary track interval. In an information recording method in a large-capacity flexible disk device for reproducing a high-capacity track format recorded on a low-capacity recording medium by the high-capacity magnetic head, an area having a track width in which normal writing is performed by the low-capacity magnetic head Overwriting is performed by a low capacity magnetic head, and a track width area that can be read only by a high capacity magnetic head is recorded.

The present invention (claim 3) has a low-capacity magnetic head and a high-capacity magnetic head, and the low-capacity magnetic head records a high-capacity track format on a low-capacity recording medium at arbitrary track intervals. In an information recording medium which is the low-capacity recording medium used in a large-capacity flexible disk device for reproducing a high-capacity track format recorded on a low-capacity recording medium by the high-capacity magnetic head, normal writing by the low-capacity magnetic head is performed. And a track width region in which overwriting is performed by the low-capacity magnetic head and can be read only by the high-capacity magnetic head.

According to the present invention (claim 4), in the information recording apparatus according to claim 1, the recording control means arbitrarily sets the size of a track width area in which normal writing is performed by a low capacity magnetic head. To be set to.

Further, the present invention (claim 5) is characterized in that, in the information recording method according to claim 2, the area of the track width in which normal writing is performed by the low capacity magnetic head is arbitrarily set. It is a thing.

Further, according to the present invention (claim 6), in the information recording medium according to claim 3, the size of the track width area in which normal writing is performed by the low capacity magnetic head is arbitrarily set. is there.

According to the present invention (claim 7), in the information recording apparatus according to claim 1 or 4, the recording control means writes a track width area in the disk where a normal writing is performed by a low capacity magnetic head. The recording is performed from the outermost circumference, the overwriting is performed by the low-capacity magnetic head, and the track width area that can be read only by the high-capacity magnetic head is recorded from the innermost circumference.

Further, according to the present invention (claim 8), in the information recording method according to claim 2 or 5, the area of the track width, which is normally written by the low capacity magnetic head, is recorded from the outermost periphery of the disk, Overwriting is performed by a low-capacity magnetic head, and a track width area that can be read only by a high-capacity magnetic head is recorded from the innermost circumference.

According to the present invention (claim 9), in the information recording medium according to claim 3 or 6, the area of the track width, which is normally written by the low capacity magnetic head, is recorded from the outermost periphery of the disk. That is, an area having a track width that can be read only by the high-capacity magnetic head is overwritten by the low-capacity magnetic head and is recorded from the innermost circumference.

According to the present invention (claim 10), in the information recording apparatus according to claim 1, 4 or 7, the recording control means stores management information such as a boot sector, FAT, root directory, etc. in a low capacity magnetic head. Is recorded in an area of the track width in which normal writing has been performed, and data is overwritten by the low-capacity magnetic head and recorded in an area of the track width that can be read only by the high-capacity magnetic head. Access to a track to which normal writing has been performed by the head is performed by a command similar to that of a normal floppy disk, and access to a track to which overwriting is performed uses a special command.

Further, according to the present invention (claim 11), in the information recording method according to claim 2, 5 or 8, the management information such as the boot sector, FAT and root directory is normally written by a low capacity magnetic head. Tracks recorded in a track width area, data is overwritten by a low-capacity magnetic head and recorded in a track width area that can be read only by a high-capacity magnetic head, and normal writing is performed by a low-capacity magnetic head. The access to the track is performed by a command similar to that of a normal floppy disk, and the access to the overwritten track uses a special command.

According to the present invention (claim 12), in the information recording medium according to claim 3, 6 or 9, the management information such as boot sector, FAT, root directory, etc. is normally written by a low capacity magnetic head. The data is recorded in a track width area, and the data is recorded in a track width area in which data can be overwritten by the low capacity magnetic head and read only by the high capacity magnetic head.

[0017]

(Embodiment 1) Embodiments relating to claims 1, 2 and 3 of the present invention will be described with reference to the drawings. In the information recording apparatus shown in FIG. 1, 1 is a recording medium, and 2 is a spindle motor for rotationally driving the recording medium 1. Reference numeral 3 is a carriage on which a track position control mechanism (not shown) and a head slider 4 are mounted, and reference numeral 5 is a carriage drive unit for moving the carriage 3.

The head slider 4 has a high-capacity magnetic head 6 and a core 7 having a core 6a, as shown in FIG. 2, so that the recording medium 1 can be recorded and reproduced at a low capacity and a high capacity.
a low-capacity magnetic head having a and is arranged above and below the recording medium 1.

Reference numeral 8 is a carriage drive circuit for driving the carriage drive unit 5, 9 is a carriage drive unit 5 for driving the carriage drive unit 5, and sets the track positions of the high-capacity magnetic head 6 and the low-capacity magnetic head 7 of the carriage 3. It is a track position control circuit for controlling. The position control by the track position control circuit 9 is performed by information from the track position control mechanism of the carriage 3, for example, the carriage 3.
This is performed based on the encoder signal of the MR or glass element mounted on the top.

Reference numeral 10 is a recording / reproducing amplifier for a plurality of magnetic heads for amplifying recording / reproducing signals of the high capacity magnetic head and the low capacity magnetic head 7, 11 is a low capacity format data processing circuit, 12 is a high capacity format data processing circuit, 1
Reference numeral 3 is a signal line switching circuit. Reference numeral 14 denotes a CPU, and the CPU 14 controls the above circuits and the recording amplifier 10 for a plurality of magnetic heads.

The operation of the above configuration will be described. FIG. 3 is a diagram showing a recording state of information on the information recording medium recorded by the information recording apparatus according to the first embodiment. In the information recording medium shown in FIG. 3, 15 is a recording medium, and 16
Indicates a normal track width area written by the low capacity magnetic head, that is, the low capacity format data processing circuit 11 is selected by a command from the CPU 14, and the signal line switching circuit 13 switches to the low capacity magnetic head signal line. Is performed and the area is written with a normal track width. Reference numeral 17 denotes a track width region in which overwriting is performed by the low capacity magnetic head and can be read only by the high capacity magnetic head. The high capacity format data processing circuit 12 is selected according to a command from the CPU 14, and the signal line switching circuit 13 is used. The area is recorded by overwriting so that the signal line for the low capacity magnetic head is switched to and the width is narrower than the normal track width. The entry information 16a of the file A is written in the area 16 by using the low capacity magnetic head. The data 17a of the file A is written in the area 17 by using the overwriting of the low capacity magnetic head. Next, considering the case where the file B is additionally written, the entry information 16 of the file B is continuously formed from the entry information 16a of the file A by using a low capacity magnetic head in the area 16 part.
Write b. For the data 17b of the file B, the area 17 is used by overwriting the low capacity magnetic head.
Write to. When reading, the areas 16 and 17 are read using a high capacity magnetic head.

By performing such writing, it becomes possible to perform recording in accordance with the conventional FAT type file management system even when a file is additionally written. As described above, in the first embodiment, the low-capacity magnetic head and the high-capacity magnetic head are provided, and the low-capacity magnetic head records the high-capacity track format on the low-capacity recording medium at an arbitrary track interval. In an information recording device, which is a large-capacity flexible disk device for reproducing a high-capacity track format recorded on a recording medium by the high-capacity magnetic head, a track width area in which normal writing is performed by a low-capacity magnetic head, Since the recording control means is provided for performing the overwriting by the capacitive magnetic head and performing the recording so as to have the area of the track width that can be read only by the high-capacity magnetic head, the area where the normal writing is performed by the low-capacity magnetic head is provided. By storing the file management information such as the file name in the area where the normal writing is performed, By using the overwrite area of the data portion of the file low capacity magnetic head, it is possible to additionally recording file while maintaining a high capacity recording.

(Embodiment 2) Embodiments relating to claims 4, 5 and 6 of the present invention will be described with reference to the drawings. The basic configuration of the information recording device is similar to that shown in FIG. FIG. 4 is a diagram showing a recorded state of information on the information recording medium recorded by the information recording apparatus according to the second embodiment. In the information recording medium shown in FIG. 4, reference numeral 15 is a recording medium, 18 is a track width region in which normal writing is performed by a low-capacity magnetic head, and 19 is high-capacity magnetic recording by overwriting by a low-capacity magnetic head. This is a track width area that can be read only by the head. 1
The area 8 can be designated by the user in advance to an arbitrary size, and the number of tracks N corresponding to the designated capacity is secured. Normal writing is performed on these N tracks using a low-capacity magnetic head.

By performing such writing, the user can selectively use both the low-density but rewritable area 18 and the high-density but one-time area 19. For example, it is possible to record a system part that does not need to be rewritten in the area 19 and a data part that needs to be rewritten in the area 18.

As described above, in the second embodiment, the size of the track width area in which normal writing is performed by the low-capacity magnetic head is set arbitrarily.
It is possible to record not only the file management information but also the data portion of the file in the area where the normal writing is performed. In other words, it is possible to arbitrarily set the size of the one-time recording area where high density recording is possible and the size of the rewritable area where low density recording is possible.

(Embodiment 3) Embodiments relating to claims 7, 8 and 9 of the present invention will be described with reference to the drawings. The basic configuration of the information recording device is similar to that shown in FIG. FIG. 5 is a diagram showing a recording state of information on the information recording medium recorded by the information recording apparatus according to the third embodiment. In the information recording medium shown in FIG. 5, reference numeral 15 is a recording medium, 20 is a track width region in which normal writing is performed by a low-capacity magnetic head, and 21 is high-capacity magnetic recording by overwriting by a low-capacity magnetic head. This is a track width area that can be read only by the head. 2 above
The area 0 is an area sequentially recorded from the outermost circumference to the inner circumference of the information recording medium 15, and the area 21 is an area sequentially recorded from the innermost circumference to the outer circumference.

By performing such writing, it is possible to properly use the low-density rewritable area 20 and the high-density one-time area 21 without securing a low-density rewritable area in advance. .

As described above, in the third embodiment, the track width area in which normal writing is performed by the low capacity magnetic head is recorded from the outermost circumference, and the high density area in which overwriting is performed is recorded from the innermost circumference. Therefore, it is possible to use the rewritable area without securing the rewritable area in advance.

(Embodiment 4) Claims 10 and 1 of the present invention
Embodiments relating to 1 and 12 will be described with reference to the drawings. The basic configuration of the information recording device is similar to that shown in FIG. FIG. 6 is a diagram showing a recorded state of information on the information recording medium recorded by the information recording apparatus according to the fourth embodiment. In the information recording medium shown in FIG. 6, reference numeral 15 is a recording medium, 22 is a track width region in which normal writing is performed by a low capacity magnetic head, and 22
The area a is the boot sector on the floppy disk, F
The area corresponds to the AT and the root directory. 23
Is a track width region in which overwriting can be performed by a low capacity magnetic head and read only by a high capacity magnetic head. Further, the area 22a is an area for reading / writing only by a command used for a normal floppy disk, and the areas 22 and 23 are areas for reading / writing only by a command unique to the information recording apparatus.

By performing such control, even when the recording medium 15 is inserted into a normal floppy disk drive, the boot sector, the FAT, and the root directory can be accessed, and the root directory of the recording medium 15 can be accessed. It becomes possible to confirm the recorded contents.

Further, by using a command similar to that of a normal floppy disk, the track to which normal writing is performed by the low capacity magnetic head is accessed, and the track to which overwriting is performed is performed by using a special command. Therefore, it is possible to prevent the overwritten data area from being destroyed by being accessed for writing.

As described above, in the fourth embodiment, the management information such as the boot sector, the FAT, and the root directory is recorded in the area of the track width where the normal writing is performed by the low capacity magnetic head, and the normal data is reduced. Since overwriting was performed by the capacitive magnetic head and recording was performed in the area of the track width that can be read only by the high-capacity magnetic head,
By accessing the track which is normally written by the low capacity magnetic head with the same command as the normal floppy disk, the file management information such as boot sector, FAT, root directory, etc. can be also used by the normal floppy disk drive. Can be read, and the disk information such as the recorded file name can be read by an ordinary floppy drive.

[0033]

As described above, according to the present invention, a file is additionally written by providing a low capacity recording medium with an area for writing with a normal track width and an area for overwriting with a low capacity magnetic head. There is an effect that it is possible to rewrite.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an information recording device according to an embodiment of the present invention.

FIG. 2 is a perspective view of a head slider according to the information recording apparatus of FIG.

FIG. 3 is a diagram for explaining recording of information by the information recording apparatus according to the first embodiment.

FIG. 4 is a diagram for explaining recording of information by the information recording device according to the second embodiment.

FIG. 5 is a diagram for explaining recording of information by an information recording device according to a third embodiment.

FIG. 6 is a diagram for explaining recording of information by an information recording device according to a fourth embodiment.

[Explanation of symbols]

1 Low Capacity Recording Medium 2 Spindle Motor 3 Carriage 4 Head Slider 5 Carriage Drive Unit 6 High Capacity Magnetic Head 6a High Capacity Magnetic Head Core 7 Low Capacity Magnetic Head 7a Low Capacity Magnetic Head Core 8 Carriage Drive Circuit 9 Track Position Control Circuit 10 For Magnetic Head Recording / reproducing amplifier 11 Low capacity format data processing circuit 12 High capacity format data processing circuit 13 Signal line switching circuit 14 CPU 15 Recording medium 16 Normal track width area 16a File A entry information 16b File B entry information 17 Overwrite Track width area 17a File A data 17b File B data 18 N normal track width area 18a File A entry information 18b File B entry information 18c File B data Data area 19a Overwrite track width area 19a File A data 20 Normal track width area (writing from the outermost periphery) 20a File A entry information 20b File B entry information 20c File B data 21 Overwrite track width area (Write from the innermost circumference) 21a Data 22 of file A 22 Normal track width area 22a Boot sector, FAT, root directory area 23 Overwrite track width area

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Claims (12)

[Claims] 1. A low-capacity magnetic head and a high-capacity magnetic head, wherein the low-capacity magnetic head records a high-capacity track format on a low-capacity recording medium at arbitrary track intervals, and records on the low-capacity recording medium. In an information recording device, which is a large-capacity flexible disk device for reproducing a high-capacity track format by the high-capacity magnetic head, a track width area normally written by the low-capacity magnetic head and an overwriting by the low-capacity magnetic head. An information recording apparatus comprising: a recording control unit that performs recording so as to have a track width area that can be read only by a high-capacity magnetic head. 2. A low-capacity magnetic head and a high-capacity magnetic head, wherein the low-capacity magnetic head records a high-capacity track format on a low-capacity recording medium at arbitrary track intervals, and records on the low-capacity recording medium. In the information recording method in the large-capacity flexible disk device for reproducing the high-capacity track format by the high-capacity magnetic head, the low-capacity magnetic head overwrites the track width area normally written by the low-capacity magnetic head. An information recording method characterized by recording a track width area that can be read only by a high capacity magnetic head. 3. A low-capacity magnetic head and a high-capacity magnetic head, wherein the low-capacity magnetic head records a high-capacity track format on a low-capacity recording medium at an arbitrary track interval, and is recorded on the low-capacity recording medium. In the information recording medium which is the low-capacity recording medium used in the large-capacity flexible disk device for reproducing the high-capacity track format by the high-capacity magnetic head, a track width area in which normal writing is performed by the low-capacity magnetic head, An information recording medium having a track width area in which data can be overwritten by a low capacity magnetic head and read only by a high capacity magnetic head. 4. The information recording apparatus according to claim 1, wherein the recording control unit arbitrarily sets a size of a track width area in which normal writing is performed by a low capacity magnetic head. Information recording device. 5. The information recording method according to claim 2, wherein the area of the track width in which normal writing is performed by the low capacity magnetic head is arbitrarily set. 6. The information recording medium according to claim 3, wherein the size of the track width area in which normal writing is performed by the low capacity magnetic head is arbitrarily set.
An information recording medium characterized by the above. 7. The information recording apparatus according to claim 1 or 4, wherein the recording control means records an area of a track width in which normal writing is performed by a low-capacity magnetic head from the outermost periphery of the disk, and the low-capacity magnetic field is recorded. An information recording apparatus, characterized in that an area of a track width that can be read only by a high capacity magnetic head is overwritten by a head and recorded from the innermost circumference. 8. The information recording method according to claim 2 or 5, wherein an area having a track width in which normal writing is performed by a low-capacity magnetic head is recorded from the outermost periphery of the disk, and overwriting is performed by the low-capacity magnetic head. An information recording method characterized in that an area having a track width that can be read only by a high capacity magnetic head is recorded from the innermost circumference. 9. The information recording medium according to claim 3 or 6, wherein a track width region in which normal writing is performed by a low-capacity magnetic head is recorded from the outermost periphery of the disk, and is overlapped by the low-capacity magnetic head. An information recording medium characterized in that an area having a track width that can be written and read only by a high capacity magnetic head is recorded from the innermost circumference. 10. The information recording device according to claim 1, 4 or 7, wherein the recording control means normally writes management information such as a boot sector, FAT, and root directory with a low-capacity magnetic head. Area, the data is overwritten by the low-capacity magnetic head, and the data is recorded in the area of the track width that can be read only by the high-capacity magnetic head. The information recording device is characterized in that access to a track is performed by using a command similar to that of a normal floppy disk, and a special command is used to access an overwritten track. 11. The information recording method according to claim 2, 5 or 8, wherein management information such as a boot sector, a FAT, a root directory is recorded in a track width area in which normal writing is performed by a low capacity magnetic head, Data is overwritten by a low-capacity magnetic head, recorded in a track width area that can be read only by a high-capacity magnetic head, and normally written by a low-capacity magnetic head. An information recording method characterized in that a special command is used to access a track overwritten by the same command. 12. The information recording medium according to claim 3, 6 or 9, wherein management information such as a boot sector, FAT, root directory, etc. is recorded in a track width area which is normally written by a low capacity magnetic head. Data is recorded in an area of a track width that can be read only by a high capacity magnetic head by overwriting with a low capacity magnetic head.
An information recording medium characterized by the above.