KR940011377B1 - Method of the sector arrangement of the disc for the imformation memory - Google Patents

Abstract

The allocation method minimizing the seek time, the rotating latency time, by using different reference sector locations on each even or odd track allocates the odd tracks where the sectors are positioned with the reference of the index area; the even tracks where the sectors are positioned with the reference of the track seek time. The disk driver comprise a magnetic disk (1) where two heads (2) are positioned on/below the disk surface; a head driver (3) controlling the heads (2); a disk driving means (4) making the disk (1) rotate; a synchronizing means (5) compensating the synchronizing operation; a data generator (6) providing the servo data; a control means (7) controlling the reference sectors on each odd/even track.

Description

Sector Arrangement Method of Information Storage Disk

1 is a diagram for explaining a sector arrangement method for a disc as an information storage medium to which the present invention is applied.

2 is a functional block diagram of an information storage medium driving circuit for realizing the sector arrangement method according to the present invention.

* Explanation of symbols for main parts of the drawings

1 disc 2 head portion

3: head drive unit 4: disc drive unit

5: Data synchronization correction part 6: Servo data generator

7: control part ID: index area

The present invention relates to a sector array method of an information storage disk, and in particular, sets the reference sectors of odd and good tracks differently in consideration of track and head switching on a disk used as a large capacity information storage medium of a disk drive. A sector array method of an information storage disk which enables recording and reading of a medium to be performed in the shortest time.

At present, there is an increasing demand for high-density information recording and fast access of a large-capacity information storage medium capable of storing a large amount of information. As an information storage medium for satisfying such a demand, a hard disk drive has a concentric or circular disk shape. Memory is widely used. This disc is generally formed of an index area in which information relating to the operation of the disc is recorded, a plurality of spiral or concentric tracks forming the information storage capacity of the disc, and a plurality of sectors constituting each track.

More specifically, in the case of storing information on a disk, the hard disk drive records information by sequentially designating sectors by sequentially accessing a desired track using two heads located on the upper and lower surfaces of the disk. At launch, the array is accessed at the time of writing to read the desired information.

However, in the method of sequentially arranging sectors for each track on the basis of the index as described above, when a track is changed while reading the sectors arranged in succession, the seek operation for the desired track of the head is performed. Even when complete, due to the rotation of the disc, the head does not reach the designated sector immediately, resulting in a delay by rotational latency time.

In addition, when the heads located above and below the disk are required to be switched, even if the head reaches the desired sector of the desired track, the head drive is not immediately stabilized. Caused.

Therefore, in the conventional method of arranging tracks of a disc based on an index area, a high speed disc may be caused by a delay caused by the rotation of the disc or a delay time for the stable operation of the head. It is a failure in access.

The present invention has been made in view of the above-described drawbacks of the prior art, and in the case of the odd track on the disk as the information storage medium, the sectors are arranged in sequence with respect to the index area, whereas in the case of the even track, the head searches for one track. By setting a predetermined sector as a reference track in consideration of the time required, the sectors of the information storage medium can be quickly accessed by the predetermined sector of the disc even when the track is changed or the head is changed. The purpose is to provide an arrangement method.

In order to achieve the above object, the present invention provides a disc sector arrangement method for recording or reading a large amount of information using a disc as an information storage medium, wherein the track number and one rotation of the disc in each servo area of the disc. Record index data indicating whether or not the track to be searched is the odd track or even track, and in the case of the odd track, the index area is sequentially sector-arranged while the even track is on the same line from the index area. Sequentially arranging sectors on the basis of the corresponding predetermined sector, in the case of the head switching, in the case of the first head, the sector arrangement is performed from the sector arrangement position designated according to the odd track and the even track. The position beams specified for the nose tracks and storm tracks, taking into account the time required for A predetermined number of sectors after further comprises a step of setting a reference sector.

According to the present invention, there is provided a disc drive apparatus for recording and reading a large amount of information by arranging tracks and sectors of an information storage disc having an index area, wherein the disc 1 is located above and below the information storage disc 1. Head portion 2 composed of first and second heads accessing the head, a head driving portion 3 for driving the head portion 2, a disk driving portion 4 for rotating the disk 1, and A data synchronization compensator 5 for synchronously adjusting and correcting data output from the first and second heads, a servo data generator 6 for generating servo data of a disk included in the data synchronization compensator 5; And a sector arrangement access device for an information storage medium comprising a control unit (7) for separately designating a reference sector according to the odd number and even track of the disk (1) based on the servo data, and controlling the sectors to be arranged sequentially from the reference sector. Offer The.

According to the sector arrangement method and apparatus for an information storage medium according to the present invention configured as described above, the reference sector for data processing is separately designated according to the odd track or even track on the disk, and the stabilization time of the head for accessing the disk. In addition, by arranging sectors properly on the disk, high-speed disk access is possible by minimizing the delay time due to track change and head change.

Hereinafter, a method and an apparatus for arranging sectors of an information storage medium according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a diagram schematically showing a disk 1 as an information storage medium in which a plurality of tracks are divided concentrically, and FIG. 2 is information embodying the present invention in which the disk 1 shown in FIG. 1 is sector-arranged. A functional block diagram of a sector array access device of a storage disk is shown.

First, a method of arranging data proxy sectors on the disc 1 will be described according to the present invention.

1 and 2, when a command for recording data is applied from a host control means (not shown) to the microcomputer 7 as a control unit, the microcomputer 7 sends the data to a radix track or the like on the disk 1; At the same time, it is determined whether to record on the even track, or at the same time, whether to record using the first head or the second head. In this case, when data is to be recorded on the nose track, the microcomputer 7 controls the head drive unit 3 composed of an actuator to drive the first head and sequentially from the index area ID of the disk 1. The data is recorded while arranging sectors.

When the base track is accessed and the change to the even track is necessary, i.e., when the rain track is accessed, it is the same as the index area ID in consideration of the time td required for 1-track search of the head. By setting the line sector area Nd as the reference sector, data are recorded while the sectors are arranged in sequence.

That is, in the present invention, the disc 1 is divided into two, for example, in consideration of the track movement time of the head, and then, when the odd track is accessed, the sectors are sequentially arranged from the normal index area, while in the even track, the head track is the same time ( In consideration of td), the disk 1 is accessed by sequentially arranging sectors with reference tracks of the predetermined sector Nd after the td time.

On the other hand, when switching the head in the track in which the sectors are arranged as described above, the time ta for the head to stably read out the information on the disk 1 is taken into account. For example, when accessing on a disc track by the first head, sectors are arranged based on the index area ID for the odd track in the above-described manner, whereas sectors are determined based on the Nd sector for td time for the even track. Will be arranged.

On the other hand, the reference sector designated in the above-described manner is further moved in consideration of the time ta required for the second head to stabilize when the disk is accessed by the second head by the switching of the head, that is, when the disk is accessed on the back of the disk. Thus, in the odd track, the sectors are arranged based on the Na sector, while in the even track, the Nd + Na sector 14 is set as the reference sector to access the disk.

On the other hand, in the case of accessing the sectors arranged as described above, the microcomputer 7 can quickly search for a desired track and sectors on the track based on the above conditions when arranging sectors for data recording.

As described above, according to the present invention, there is provided a sector array method of an information storage disk capable of high-speed disk access by minimizing the search time of the first sector, that is, the rotation time, according to the change of the track and the head switching.

Claims (1)

In the disk sector arraying method of recording each servo area and track number of a disk and index data representing one rotation of the disk for recording or protruding a large amount of information by using the disk as an information recording medium, the track to be recorded is an odd number. In the case of the odd track, the sectors are arranged based on the index area recorded on the disc. In the case of the even track, predetermined tracks are provided for the time required for stabilization of the head which has finished seeking. The sector arrangement method of an information recording disc, characterized in that sectors are arranged with the last track as a reference track.