JPH0278064A - Disk device - Google Patents

Abstract

PURPOSE:To increase the storage capacity of the whole disk device by disposing plural sectors continuously without a gap between them on one track and providing a buffer memory capable of reading this sector group at once. CONSTITUTION:In the case of read, a head 2 is allowed to seek for an address of a track 1 specified vai an interface 4. When the head 2 comes to the objective track 1, then it is awaited that the leading part of a sector group containing the objective sector is brought into the position of the head 2, and the whole group is read in the buffer memory 3 to be sent via the interface 4 to a controller. On the other hand, in the case of write, plural sectors are read in the memory 3, and afterward data being transferred from the interface 4 are written in a prescribed address in the memory 3. Subsequently, the head 2 is positioned at the leading part of the sector group to write the data of the memory 3 in the whole sector group. By this method, the storage capacity of the disk can hence be increased.

Description

[Detailed description of the invention] C Industrial application field] This invention relates to a disk device.

[Conventional technology]

FIG. 3 shows a configuration diagram of a conventional disk device. In the figure, (1) is a track on a circle, and a plurality of sectors (1a) are arranged with gaps (1b) in between. (2) is an R/W head, (3) is a buffer memory for reading each sector (la), and (4) is a controller interface.

Next, the operation will be explained. During disk read operation, the target track (1) is read/loaded according to commands sent via the controller interface (4).
After positioning the W head (2), move the target sector (1
Data reading is started when the first data in a) comes to the position of the R/W head (2). Then, the read data is written to the buffer memory (3) once, and then
Timing adjustment controller, controller interface (4
) and then sent to the controller side. In this case, the buffer memory (3) has only the number of bits necessary for timing adjustment.

On the other hand, during disk write operation, when the R/W head (2) reaches just before the position of the target sector (1a), it starts transferring the write data to the controller interface (4) using the same procedure as when reading the disk. request to do so. After adjusting the timing in the buffer memory (3), data is written to the target sector.

[Problem to be solved by the invention]

Since the conventional disk device is configured as described above, it is necessary to arrange gaps (1b) as many as sectors (1a) on one track (1). The number of sectors (1a) that can be stored is reduced. As a result, there was a problem that the storage capacity of the entire disk device became low.

This invention was made to solve the above-mentioned problems, and aims to provide a disk device that can increase the number of sectors that can be stored on one track and increase the storage capacity of the entire device. .

(Means for Solving the Problems) A disk device according to the present invention is capable of consecutively arranging a plurality of sectors on one track without interposing gaps between them, and reading a group of consecutive sectors at once. It is equipped with only a buffer memory.

[For production]

In this invention, data reading and data writing can be performed by reading or writing a plurality of sectors to or from the buffer memory at once. Also, 1
By arranging multiple sectors consecutively on a book track without gaps, the number of sectors that can be stored can be increased.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. 1st
The figure shows a configuration diagram of a disk device according to the present invention. In the figure, (1) is a circular track in which a plurality of sectors (la) are consecutively arranged without gaps. (2) is an R/W head, (3) is a buffer memory capable of reading or writing a plurality of sectors (la) at a time, and (4) is a controller interface.

Next, the operation of this invention will be explained. During disc read operation, the controller interface (4
) is caused to seek the R/W head (2) to the address of the track (1) specified through the address. This head (2)
When the target sector is on the target track (1), the next step is to wait until the beginning of the sector group containing the target sector comes to the head position. Then, one entire sector group is stored in the buffer memory (3
), the data at the address in the buffer memory (3) corresponding to the target sector position is read from the buffer memory and sent to the controller side via the controller interface (4).

On the other hand, during a disk write operation, a plurality of sectors are first read into the buffer memory (3) using the same procedure as in the case of disk read. Thereafter, the data to be written transferred via the controller interface (4) is written to the address in the buffer memory (3) corresponding to the target sector position. In this way, when data writing to the buffer memory (3) is completed, the R/W head is positioned at the beginning of the sector group that includes the target sector, and then the data in the buffer memory (3) is written to the entire sector group. .

In the above embodiment, the case where there is one sector group on track (1) has been explained, but in addition, as shown in FIG. 2, two or more sectors may be arranged on track (1) with a gap (lb) between The data may be arranged in sector groups.

〔Effect of the invention〕

As explained above, according to the present invention, a plurality of sectors are arranged consecutively on one track without gaps, and by providing a buffer memory that can read these sectors at once, it is possible to store them on one track. The number of sectors can be increased.

This allows the storage capacity of the entire disk device to be increased.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a disk device according to an embodiment of the present invention, FIG. 2 is a block diagram of another example of a disk device, and FIG. 3 is a block diagram of a conventional disk device. (1)...Track, (la)...Sector, (lb
)...Gap, (3)...Buffer memory. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] A disk device characterized in that a plurality of sectors are consecutively arranged on one track with no gaps between them, and a buffer memory is provided that is capable of reading the continuous sector group at one time.