JPH0877678A - Disk device and information processing method thereof - Google Patents

Abstract

(57) [Summary] [Purpose] To dramatically improve the time required for reading and writing information by reading and writing information to and from multiple tracks at the same time, and to fix the conventionally movable head. Thus, a disk device and an information processing method therefor, which can significantly improve the reliability of the disk device and dramatically extend the life of the disk device, are provided. According to a disk device of the present invention, a disk that rotates for reading and writing information, a plurality of heads that correspond to a plurality of tracks of the disk in a one-to-one correspondence, and a fixed head that holds the plurality of heads. It has a bar and a control means for controlling the head and the disk to simultaneously read and write the divided information and combine the read information.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk device for reading and writing information as a peripheral device such as an information processing device and an information processing method thereof.

[0002]

2. Description of the Related Art FIG. 5 is an image diagram of tracks of this embodiment and a conventional example, FIG. 6 is an image view of sectors of this embodiment and a conventional example, and FIG. 7 is a track of this embodiment and a conventional example.
FIG. 8 is an image view of a sector, and FIG. 8 is a plan view of a conventional example.

A conventional disk device has a disk that rotates for reading and writing information, a movable arm, one head provided at the tip of the arm, and a means for reading and writing information on the disk. There are many cases.

Next, a conventional technique will be described with reference to the drawings.

In FIG. 8, the first disk is placed on the disk 10.
A track 41, a second track 42, an xth track 43 and the like are provided. The head 8 is attached to the tip of the arm 82.
1 is provided.

Next, the processing operation in the prior art will be described.

First, in FIG. 8, the arm 82 is the head 8
It is held so that it can be moved around an end point opposite to the end point where 1 is provided.

When reading / writing the first track 41, the arm 82 is rotated to align the head 81 with the upper portion of the first track 41. Similarly, when reading and writing to the second track 42 and the x-th track 43,
The arm 82 is rotated to align the head 81 with the upper portions of the second track 42 and the x-th track 43, respectively. This figure shows a state in which the head 81 is aligned with the second track 42.

[0009]

In this conventional disk device, since the arm 82 is rotated to align one head 81 with the upper portion of the track for reading and writing, the time for moving the arm onto the target track is increased. There was a problem that (hereinafter abbreviated as “seek time”) was long.

Further, adjacent tracks such as the first track first sector 71 and the second track first sector 73, or the first track second sector 72 and the second track second sector 74 shown in FIG. 7 are the same. When reading / writing to / from a sector, for example, even after first reading / writing to / from the first track / first sector 71, the arm 82 is rotated to move the head 81 onto the second track 42, The first sector 73 causes the head 81 to rotate when the disk 10 rotates.
There was a problem that I could not read or write until I came below.

Therefore, an object of the present invention is to dramatically improve the time required to read / write information by simultaneously reading / writing information from / to a plurality of tracks, and further to fix the conventionally movable head. By doing so, it is an object of the present invention to provide a disk device capable of significantly improving the reliability of the disk device and dramatically extending the life of the disk device, and an information processing method thereof.

[0012]

According to an information processing method of a disk device of the present invention, a disk rotating for reading and writing information, a plurality of heads corresponding to a plurality of tracks of the disk, and a plurality of heads are held. An information processing method for a disk device having a head bar, the method including dividing information, writing the divided information to the disk at the same time, reading the written information from the disk at the same time, and combining the read information. Is characterized by.

The disk device of the present invention is a disk device having a disk that rotates for reading and writing information, a plurality of heads corresponding to a plurality of tracks on the disk, and a head bar that holds the plurality of heads. ,
One for each of multiple tracks
And a plurality of corresponding heads, which are arranged above the disk in the radial direction, and both ends of which are fixed to the outside and the center of the disk, respectively, and the divided information by controlling each head and the disk. Read / write simultaneously and control means for combining the read information.

[0014]

The disk device of the present invention has a plurality of fixed heads corresponding to each track of the disk in a one-to-one relationship, so that there is no seek time and information can be simultaneously read / written to / from a plurality of tracks. Further, by changing the head bar from the conventional movable type to a fixed type, the time required for reading and writing can be dramatically improved, and the reliability and life of the disk device can be improved.

The outline of the processing operation of the disk device of the present invention is as follows. Check whether the disc can be written by the computer (CPU), read the disc management information, check the free space on the disc, calculate the required number of tracks and sectors,
Information is divided by determining the write track / sector, dividing the information to be written, determining the correspondence between the division information and the track / sector, and updating the management information.

2. CPU initializes sector, counts up, sets division information in I / O buffer, track
Writing to the sector, and by these steps, the divided information is written at the same time.

3. The CPU receives information on whether the disc is readable or not, saves it in the memory circuit, reads the management information from the track / sector of that area, saves it in the memory circuit, confirms the track / sector to be read, initializes the sector, counts up, and divides information. To the I / O buffer, and by these steps, the information is read simultaneously from the disk in a divided state.

4. Add track / sector information to division information, combine division information, output read completion message,
By these procedures, the information read in the divided state is combined.

[0019]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of a disk device of the present invention, FIG. 2 is a flow chart showing a write processing operation of this embodiment, and FIG. 3 is a read processing operation of this embodiment. A flow chart, FIG. 4 is a plan view of this embodiment, FIG. 5 is an image view of tracks of this embodiment and a conventional example, FIG. 6 is an image view of sectors of this embodiment and a conventional example, and FIG. 7 is this embodiment. FIG. 6 is an image diagram of a track sector of a conventional example.

In FIG. 1, a first head 11, a second head 12, and an xth head 13 are arranged on a head bar 1. A first input / output buffer 14, a second input / output buffer 15, and an xth input / output buffer 16 are provided corresponding to the first, second, and xth heads 11, 12, and 13, respectively. These first, second and xth input / output buffers 14, 1
Reference numerals 5 and 16 are connected to the control circuit 3 via the input / output circuit 2. The control circuit 3, the memory circuit 5, and the sensor 9 are connected to the CPU 4. In addition to the input / output circuit 2, the switch 6 is connected to the control circuit 3. The motor 8 receives power from the power supply circuit 7 via the switch 6, and the disk 10
Is to rotate. A first track 41, a second track 42, and an xth track 43 are arranged on the disk 10. The first, second and xth heads 11, 12, 13 are provided corresponding to the first, second and xth tracks 41, 42, 43, respectively.

FIG. 4 shows the head bar 1 and the disk 10 of FIG. 1 in a plan view. The head bar 1 is arranged above the disk 10 in the radial direction, and both ends thereof are fixed to the outside and the center of the disk, respectively.

The head bar 1 has first, second and x-th heads 11, 12, 13 arranged and held in this order from the outside to the inside. In addition, the disk 10 has first, second, and xth tracks 41, 4 in order from the outer side to the inner side.
2, 43 are arranged. And the first, second, and xth
The heads 11, 12, and 13 are respectively the first, second, and xth heads.
It is provided so as to correspond to the tracks 41, 42, and 43.

FIG. 5 shows the first, second and x-th tracks 41, 42, 43 on the disk 10 as a general image of the head bar 1 of FIG. 4 removed, and FIG. Similarly, as a general image diagram, the disk 10
The first, second and y-th sectors 61, 62 and 63 are shown in FIG. FIG. 7 is a general image diagram of FIG. 5 and FIG.
Sector 71, first track second sector 72, second track first sector 73, second track second sector 74, xth
The situation is shown in which the track y-sector 75 is located.

The operation of this embodiment will be described with reference to FIGS.

First, the information writing processing operation will be described.

Information to be written on the disk 10 is assumed to exist in the storage circuit 5 in advance.

First, the CPU 4 turns on the switch 6 via the control circuit 3. (Step 201 in FIG. 2) Then, the power supply circuit 7 supplies power to the motor 8 via the switch 6, and the disk 10 rotates. (Step 2 in FIG. 2
02) Next, the sensor 9 senses the detection hole 17 and checks the rotation speed of the disk 10. Then, the CPU 4 receives the information on the rotation speed of the disk 10 from the sensor 9 and confirms that the disk 10 has reached a predetermined rotation speed. (Step 203 in FIG. 2) Next, the CPU 4 receives the information on whether or not the disc 10 can be written from the sensor 9 and stores it in the recording circuit 5. (Step 204 of FIG. 2) Next, if the disc 10 is not writable, step 206 of FIG. 2 is performed. If the disc 10 is writable, step 207 of FIG. 2 is performed. (Step 205 in FIG. 2) The CPU 4 outputs a message indicating that the disk 10 is not writable, and the process ends. (Step 206 in FIG. 2) The CPU 4 stores the disc management information of the disc 10 in the disc management information area (probably the xth track yth sector 75).
Read from and stored in the recording circuit 5. (Step 207 in FIG. 2) Next, the free capacity of the disk 10 is checked from the disk management information existing in the recording circuit 5. (Step 208 of FIG. 2) Next, if the free space of the disk 10 is insufficient, the process of FIG.
Step 210 is performed. If the free capacity of the disk 10 is sufficient, step 211 of FIG. 2 is performed. (Step 209 in FIG. 2) The CPU 4 outputs a message that the free space of the disk 10 is insufficient, and ends. (Step 21 in FIG. 2
0) The CPU 4 calculates the number of tracks / sectors required to write information on the disk 10. For example, disk 1
When the amount of information to be written to 0 is 512 bytes and the capacity per track sector is 256 bytes, two track sectors are required. If the amount of information to be written on the disk 10 is 1024 bytes and the capacity per track sector is 128 bytes, 8 track sectors are required. The number of tracks and sectors required to write the calculated information on the disk 10 is stored in the storage circuit 5. (Step 211 in FIG. 2) Next, the CPU 4 determines the track / sector to which the information is written from the disk management information existing in the storage circuit 5 and the required number of track / sectors, and stores it in the storage circuit 5. (Step 212 in FIG. 2) Next, the CPU 4 reads the information to be written from the storage circuit 5, divides it into the capacity per track / sector, and stores it in the storage circuit 5. (Step 213 in FIG. 2) Next, the CPU 4 determines the correspondence to which track / sector the division information existing in the storage circuit 5 is written,
It is stored in the memory circuit 5. (Step 214 in FIG. 2) Next, the CPU 4 updates the management information according to which track / sector the division information existing in the memory circuit 5 is written. The CPU 4 writes the updated management information from the xth head 13 through the control circuit 3, the input / output circuit 2, and the xth input / output buffer 16 to the xth track / yth sector 75 for storing the disk management information. (Step 215 in FIG. 2) Next, the CPU 4 initializes the sector value “y” (y = 0). (Step 216 in FIG. 2) Next, the CPU 4 increments the sector value “y” (y = y + 1). (Step 217 in FIG. 2) Next, the CPU 4 passes through the control circuit 3 and the input / output circuit 2 to the y-th sector 63 (in the case of “y = 1”, the first sector 6).
1, in the case of “y = 2”, the first head 11, the second head 12, and the x-th head 13 for writing in the second sector 62)
The division information is set in the first input / output buffer 14, the second input / output buffer 15, and the xth input / output buffer 16 corresponding to. (Step 218 of FIG. 2) Next, the sensor 9 senses the detection hole 17 to detect the disk 10
Examine the rotation of. Then, the CPU 4 recognizes the rotation of the disk 10 based on the information from the sensor 9, and controls the first input / output buffer 14, the second input / output buffer 15, and the xth input / output buffer 16 via the control circuit 3 and the input / output circuit 2. The set division information is sent to the first head 11, the second head 12, and the xth head 13, and the xth track yth sector 75 (“y = 1”).
In the case of, the first track first sector 71, the second track first sector 73, etc., and in the case of "y = 2, the first track second sector 72, the second track second sector 74, etc.) are written. (Step 219 in FIG. 2) Next, the CPU 4 checks whether or not writing of all the division information existing in the storage circuit 5 to the disk 10 has been completed. If the writing is not completed, the process is repeated from step 217 of FIG. When the writing is completed, step 221 of FIG. 2 is performed. (Step 220 in FIG. 2) A message indicating that the writing of information has been completed is output, and the process ends. (Step 221 of FIG. 2) Next, a processing operation of reading information will be described.

First, the CPU 4 turns on the switch 6 via the control circuit 3. (Step 301 in FIG. 3) Then, the power supply circuit 7 supplies power to the motor 8 via the switch 6, and the disk 10 rotates. (Step 3 in FIG. 3
02) Next, the sensor 9 senses the detection hole 17 and checks the rotation speed of the disk 10. Then, the CPU 4 receives the information on the rotation speed of the disk 10 from the sensor 9 and confirms that the disk 10 has reached a predetermined rotation speed. (Step 303 in FIG. 3) Next, the CPU 4 receives information on whether or not the disk 10 can be read from the sensor and stores it in the memory circuit 5. (Fig. 3
Step 304 of FIG. 3) Next, if the disk 10 cannot be read, Step 306 of FIG. 3 is performed. If the disk 10 can be read, step 307 of FIG. 3 is performed. (Step 305 in FIG. 3) The CPU 4 outputs a message indicating that the disk 10 cannot be read, and the process ends. (Step 306 in FIG. 3) The CPU 4 stores the disc management information of the disc 10 in the disc management information area (tentatively, the xth track yth sector 75).
Read from and stored in the memory circuit 5. (Step 307 in FIG. 3) Next, the CPU 4 confirms the track / sector from which the information is read from the disk management information existing in the memory circuit 5, and stores it in the memory circuit 5. (Step 30 in FIG. 3
8) Next, the CPU 4 initializes the sector value "y" (y = 0). (Step 309 in FIG. 3) Next, the CPU 4 counts up the sector value “y” (y = y + 1). (Step 310 in FIG. 3) Next, the CPU 4 passes through the control circuit 3 and the input / output circuit 2 to the y-th sector 63 (if “y = 1”, the first sector 6).
1, when “y = 2”, the first head 11, the second head 12, and the x-th head 13 that read the second sector 62)
The division information is read into the first input / output buffer 14, the second input / output buffer 15, and the xth input / output buffer 16 corresponding to. (Step 311 in FIG. 3) Next, the CPU 4 sets the division information in the first input / output buffer 14, the second input / output buffer 15, and the xth input / output buffer 16 to the track / sector information existing in the storage circuit 5. It is added and saved in the storage circuit 5. (Step 31 in FIG. 3
2) Next, the CPU 4 sets the disk 10 for all track sectors of the disk management information existing in the storage circuit 5.
Check to see if the loading was completed. If the reading is not completed, the process is repeated from step 310 of FIG. When the reading is completed, step 31 in FIG.
Do 4. (Step 313 of FIG. 3) The CPU 4 reads all the read division information from the storage circuit 5, and all of the track / sector information added in step 312 of FIG. 3 and the disk management information existing in the storage circuit 5. The divided pieces of information are combined and stored in the storage circuit 5. (Step 314 in FIG. 3) A message indicating that the reading of information is completed is output, and the process ends. (Step 315 in FIG. 3)

[0030]

As described above, according to the present invention, since a plurality of fixed heads are provided corresponding to each track of the disk in a one-to-one correspondence, there is no seek time, and moreover, information can be simultaneously transmitted to a plurality of tracks. It has the effect of being able to read and write and to dramatically improve the time required to read and write information. Furthermore, by fixing the conventionally movable head bar, it is possible to provide a disk device that greatly improves the reliability of the disk device and dramatically extends the life of the disk device, and an information processing method therefor. There is.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an embodiment of a disk device of the present invention.

FIG. 2 is a flowchart showing a write processing operation according to the present embodiment.

FIG. 3 is a flowchart showing a read processing operation of the present embodiment.

FIG. 4 is a plan view of the present embodiment.

FIG. 5 is an image diagram of tracks of this embodiment and a conventional example.

FIG. 6 is an image diagram of a sector according to the present embodiment and a conventional example.

FIG. 7 is an image diagram of track sectors of the present embodiment and a conventional example.

FIG. 8 is a plan view of a conventional example.

[Explanation of symbols]

 1 head bar 2 input / output circuit 3 control circuit 4 CPU 5 memory circuit 6 switch 7 power supply circuit 8 motor 9 sensor 10 disk 11 first head 12 second head 13 x head 4 first input / output buffer 15 second input / output buffer 16 x-th input / output buffer 17 detection hole 41 1st track 42 2nd track 43 x-th track 61 1st sector 62 2nd sector 63 y-sector 71 1st track 1st sector 72 1st track 2nd sector 73 2nd Track 1st sector 74 2nd track 2nd sector 75 xth track yth sector 81 Head 82 Arm

Claims (2)

[Claims] 1. An information processing method for a disk device having a disk that rotates for reading and writing information, a plurality of heads corresponding to a plurality of tracks of the disk, and a head bar that holds the plurality of heads. An information processing method for a disk device, which comprises the steps of dividing information, writing the divided information to a disc at the same time, reading the written information from a disc at the same time, and combining the read information. . 2. A disk device having a disk that rotates for reading and writing information, a plurality of heads corresponding to a plurality of tracks of the disk, and a head bar that holds the plurality of heads, each of which comprises: 1 for each of multiple tracks
A plurality of heads corresponding to each other, a head bar arranged at the upper side in the radial direction of the disc, and both ends thereof fixed to the outer and central portions of the disc, respectively, controlling the heads and the disc, A disk device comprising: a control unit that simultaneously reads and writes divided information and combines the read information.