KR19980044067A - The main area recording method to make the hard disk drive have a lower bit than the adjacent track. - Google Patents

Abstract

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

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hard disk drive, and more particularly, to a method of recording a main area to have a lower bit than an adjacent track.

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

When the hard disk drive ages or the start and stop operations increase, the performance of the magnetic head and the magnetic disk decreases. Therefore, when data is recorded on the magnetic disk using ZBR (Zone Bit Recording), It solves the problem that the main area which should be read cannot be read because there is no difference in frequency recorded between the ances area and the data area.

All. Summary of Solution of the Invention

The present invention provides a method of recording with the frequency of recording data in the innermost track when information is recorded in the main area of the magnetic disk.

la. Important uses of the invention

A method of recording main area to ensure that the hard disk drive has a lower bit than the adjacent track.

Description

A method of recording main area to ensure that the hard disk drive has a lower bit than the adjacent track.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hard disk drive, and more particularly, to a method of recording a main area to have a lower bit than an adjacent track.

In general, hard disk drives are widely used as auxiliary storage devices of computer systems because they are devices that magnetically write / read data on a rotating magnetic disk. These hard disk drives allow data to be recorded on tracks arranged concentrically on a rotating magnetic disk. Therefore, the hard disk drive performs a servo-writing operation of recording track information for each track before writing data to the tracks. At this time, the layout of the magnetic disk during the servo-writing operation is performed so that the outermost circumference of the outer guard band (OGB) region, the innermost circumference of the inner guard band (IGB), and the outer guard band (OBG) region immediately after The main area located is distinguished from the data area located between the main area and the IGB area. The area occupied by the main area of the divided areas occupies a very small portion when divided into all track areas of the magnetic disk. However, the contents recorded by the main area are very important and record the defect information and various maintenance information in the data area on the magnetic disk.

As described above, when recording information in a separate area on a magnetic disk, ZBR (Zone Bit Recording) is generally used to record more information. Such a ZBR (Zone Bit Recording) method will be described with reference to FIG. 2. FIG. 2 is a format diagram of data recorded by a general ZBR method applied to the present invention, and includes an outermost track (OD region) and an innermost track (ID). The information is recorded at different frequencies from the outermost track to the innermost track so that the BPI (Bit Per Inch) is the same between the two areas.

However, as the service life of the hard disk drive increases, or as the start and stop operations increase, the performance of the magnetic head and the magnetic disk decreases. Therefore, data on the magnetic disk using the ZBR (Zone Bit Recording) method described above is deteriorated. In the case of recording, there is a problem in that the main area to be read cannot be read because there is no difference in frequency recorded between the main area and the data area.

Accordingly, an object of the present invention is to provide a method of recording with the magnitude of the frequency at which data is recorded in the innermost track when recording information in the main area of the magnetic disk.

As described above, the present invention provides a hard disk drive recording method in which the BP is recorded equally from the innermost track to the outermost track using the zone beat recording method, wherein the frequency is lower than that of the data recording area in the outermost track. The information is recorded in the main area.

1 is a block diagram of a general hard disk drive applied to the present invention.

2 is a format diagram of data recorded by a conventional general ZBR (Zone Bit Recording) method.

3 is a format diagram of data recorded by a zone bit recording (ZBR) method according to an embodiment of the present invention.

4 is a control flow chart for recording information in a mains area according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals have the same reference numerals as much as possible even if displayed on different drawings. In addition, in the following description, there are many specific details such as components of a specific circuit, which are provided to help a more general understanding of the present invention, and the present invention may be practiced without these specific details. It is self-evident to those who have knowledge. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a block diagram of a general hard disk drive according to the present invention. Referring to FIG. 1, the disks 210 are rotated by a spindle motor 234. The magnetic heads 212 are located on the corresponding one of the disks 210 and face the disks from the E-block assembly 214 coupled with the rotary voice coil actuator 230. Corresponding to the support arms extending toward 210, respectively. The preamplifier 216 preamplifies the signal picked up by one of the heads 212 at the time of read, and applies the analog read signal to the read / write channel circuit 218. Encoded write data applied from the read / write channel circuit 218 is written onto the disc through the corresponding one of the heads 212. The read / write channel circuit 218 detects and decodes a data pulse from a read signal applied from the preamplifier 216 and applies the read / write channel circuit 218 to the disk data controller 220. Decode and apply to preamplifier 216. The DDC 220 writes data received from the host onto the disc through the read / write channel circuit 218 and the preamplifier 216. The DDC 220 also interfaces the communication between the host computer and the microcontroller 224. The buffer RAM 222 temporarily stores data transferred between the host computer, the microcontroller 224 and the read / write channel circuit 218. The microcontroller 226 controls the DDC 220 in response to a read or write command received from the host computer and controls track search and track following. The PROM 226 stores an execution program of the microcontroller 224 and various setting values. The servo driver 228 generates a driving current for driving the actuator 230 by a signal for controlling the position of the heads 212 generated from the microcontroller 224 and applies it to the voice coil of the actuator 230. . The actuator 230 moves the heads 212 on the disks 210 corresponding to the direction and level of the driving current applied from the servo driver 228. The spindle motor driver 232 rotates the disks 210 by driving the spindle motor 234 according to a control value for the rotation control of the disks 210 generated from the microcontroller 224. The disk signal controller 236 generates various timing signals necessary for read / write under the control of the microcontroller 224, decodes the servo information, and applies the decoded servo information to the microcontroller 224.

Therefore, the recording of information in the main area of the hard disk drive is recorded by using the microcontroller 224 shown in FIG. At this time, the microcontroller 224 stores a program for recording the information in the main area and various kinds of information therein in the memory 226.

FIG. 3 is a format diagram of data recorded by ZBR (Zone Bit Recording) method according to an embodiment of the present invention. FIG. 3 is a ZBR method of bringing the same BPI from the innermost track (ID area) to the outermost track track (OD area). The data is recorded using the data recording area of the innermost track. The data recording area of the innermost track track records one sector of data, and the data area of the outermost track track records two sectors. However, unlike the adjacent tracks, the main turn area, which is part of the outermost tracks, is recorded in a low frequency form (recording frequency of the innermost tracks) to record one data sector. Hereinafter, the control flow of FIG. 4 will be described with reference to the block diagram of FIG. 1 and the format diagram of FIG. 3 attached to the present invention.

FIG. 4 is a control flowchart for recording information in a main area according to an embodiment of the present invention. First, in step 400, the microcontroller 224 locates a location corresponding to the main area stored in the memory unit 226. Referring to FIG. Follow the lead step. Then, in step 410, the microcontroller 224 controls the magnetic head 212 to perform on-track on the track where the main area is located. Thereafter, in step 420, the microcontroller 224 reads information to be written into the main area from the memory 226. Thereafter, in step 430, the microcontroller 224 finally records the information in the main turn area at the same frequency as the frequency of the innermost track (ID area).

In conclusion, as shown in FIG. 3, only the main turn area of the outermost main track (OD area) is recorded at a lower frequency than the adjacent track, so that recording can be performed with a relatively margin.

As described above, the present invention provides a method of recording with the size of a frequency for recording data in the innermost track when information is recorded in the main area of the magnetic disk, so that the main area can be easily recorded and read out. This can improve the reliability of the system.

Claims (1)

In the hard disk drive recording method for recording the same Bifiy from the innermost track to the outermost track using the zone beat recording method, And recording information in a mainsence area at a frequency lower than that of the data recording area in the outermost main track.