KR19990012728U - Hard disk with separate tracks - Google Patents

Abstract

A. The technical field to which the invention described in the claims belongs.

The present invention relates to a hard disk of a hard disk drive.

I. The technical problem that the invention is trying to solve

Even if the track width is reduced, it provides a hard disk that can reduce interference between adjacent tracks.

All. Summary of solution of design

Grooves are created between tracks on tracks that are continuously written, and grooves are divided between the tracks and the tracks to reduce interference between adjacent tracks.

la. Important uses of the devise

Used for high capacity hard disk implementation.

Description

Hard disk with separate tracks

The present invention relates to a hard disk, and more particularly to a track structure of the hard disk.

In general, in a hard disk drive which is widely used as a secondary storage device of a computer, when a head writes data on a hard disk, it records with a constant track width.

In recent years, however, as the capacity of hard disk drives increases, the density of data recorded on hard disks increases and track density increases. Accordingly, in order to increase the track density, the track width on the hard disk is gradually reduced. As the track width is increased by decreasing the track width, the interference between adjacent tracks is not only amplified relatively, but also the servo control becomes difficult. There was a problem that increases the possibility of).

As described above, in order to increase the capacity of the hard disk, the track density is increased by decreasing the track width. This reduction in track width not only amplifies the interference between adjacent tracks, but also makes servo control difficult, thereby increasing the possibility of off-track. There was a problem.

Accordingly, an object of the present invention is to provide a hard disk which can reduce the track width and reduce the interference between adjacent tracks and the possibility of off-track.

1 is a block diagram of a conventional hard disk drive,

2A is a cross-sectional view of a conventional hard disk,

Figure 2b is a cross-sectional view of a hard disk according to an embodiment of the present invention.

The present invention for achieving the above object is characterized by separating the track and the track by a groove by making a groove (Groove) between the track and the track on the hard disk in order to separate between the tracks written continuously.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail. In the following description and the annexed drawings, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details. And a detailed description of known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

First, referring to FIG. 1, which shows a block diagram of a conventional hard disk drive, the hard disks 10 are rotated by a spindle motor 34. The heads 12 are located on the corresponding one of the disks 10, and the disks 10 from the E-block assembly 14 coupled with the rotary voice coil actuator 30. It is installed corresponding to each of the support arms extending toward. The preamplifier 16 preamplifies the signal picked up by one of the heads 12 at the time of read and applies the analog read signal to the read / write channel circuit 18, and at the time of write. Encoded write data applied from the read / write channel circuit 18 is written onto the disc through the corresponding one of the heads 12. The read / write channel circuit 18 detects and decodes a data pulse from the read signal applied from the preamplifier 16 and applies the read / write channel circuit 18 to the DDC (Disk Data Controller) 20, and writes the write data applied from the DDC 20. Decode and apply to preamplifier 16. The DDC 20 is controlled by the microcontroller 24 and writes data received from the host computer through the read / write channel circuit 18 and the preamplifier 16 to the disk or to read data from the disk. Send to the host computer. The DDC 20 also interfaces the communication between the host computer and the microcontroller 24. The buffer RAM 22 temporarily stores data transmitted between the host computer, the microcontroller 24 and the read / write channel circuit 18. The microcontroller 24 controls the DDC 20 in response to read or write commands received from the host computer and controls track search and track following. The ROM 26 stores the execution program of the microcontroller 24 and various setting values. The servo driver 28 generates a driving current for driving the actuator 30 by a signal for controlling the position of the heads 12 generated from the microcontroller 24 and applies it to the voice coil of the actuator 30. . The actuator 30 moves the heads 12 on the disks 10 in correspondence with the direction and level of the drive current applied from the servo driver 28. The spindle motor driver 32 rotates the disks 10 by driving the spindle motor 34 according to a control value for the rotation control of the disks 10 generated from the microcontroller 24. The disk signal controller 36 generates various timing signals necessary for read / write, and decodes the servo information to apply to the microcontroller 24.

In the above-described hard disk drive, when the track width on the disc is to be reduced in order to increase the track density, in the present invention, the track and the track are separated into grooves to reduce interference between adjacent tracks.

2A shows a cross-sectional view of a conventional conventional hard disk, where reference numeral 200 denotes a head and reference numeral 202 denotes a disk. Referring to FIG. 2A, it can be seen that a conventional hard disk is written on the same magnetic layer without separating the track from the track. As the track density increases, the track width decreases, and the interference effect between the tracks increases.

2B illustrates a cross-sectional view of a hard disk in which a track and a track are separated into grooves according to an embodiment of the present invention, and reference numeral 204 denotes a groove. Referring to FIG. 2B, there is a groove between the tracks, which reduces the effect of track interference by adjacent tracks, resulting in a higher signal-to-noise ratio, and also reduces the likelihood of off-tracks.

As described above, the present invention has the advantage of reducing the track interference effect by adjacent tracks as the track width is reduced by separating the tracks and tracks of the hard disk into grooves, and also reducing the possibility of off-track.

Claims (1)

In a hard disk of a hard disk drive for recording data in the form of tracks in a magnetic layer on the disk, And a track having a separated track formed between the track of the hard disk surface and a concentric groove for separating the track.