Disk control apparatus, disk control method, and computer product

• US 7,321,477 B2
• Filed: 01/19/2006
• Issued: 01/22/2008
• Est. Priority Date: 09/26/2005
• Status: Expired due to Fees

• Current Assignee: Toshiba Storage Device Corp (Toshiba Corporation)
• Original Assignee: Fujitsu Limited
• Inventors: Suzuki, Atsushi, Abe, Yukio, Yanagi, Shigenori
• Primary Examiner(s): Sniezek; Andrew L.
• Application Number:
  US11/335,127
• Publication Number:
  US 20070070542A1
• Time in Patent Office: 733 Days
• Field of Search: None
• US Class Current: 360/60
• CPC Class Codes: G11B 19/04 Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions
• CPC Class Codes: G11B 19/20 Driving; Starting; Stopping; Control thereof

Abstract

A disk control apparatus controls a disk driving unit that performs read/write of data with a head. A vibration detecting unit detects a vibration of the disk driving unit. A disk control unit controls the disk driving unit based on the detected vibration.

Claims

1. A disk control apparatus that controls a disk driving unit that performs read/write of data with a head, the disk control apparatus comprising:

a vibration detecting unit that detects a vibration of the disk driving unit using a rate of write fault occurrence, the rate of write fault occurrence being obtained from at least one of a shock sensor and the position signal; and

a disk control unit that controls the disk driving unit to switch a sensitivity of the shock sensor based on the detected vibration.

2. The disk control apparatus according to claim 1, wherein

the disk control unit tightens, when a predetermined vibration is detected, a write off track slice that is a condition for stopping the write of data in a disk.

3. The disk control apparatus according to claim 2, wherein

the disk control unit tightens the write off track slice based on at least one of a characteristic, a temperature, and a customization level of the head.

4. The disk control apparatus according to claim 1, wherein

the disk control unit rejects, when the vibration is detected, a seek error signal, and maintains a settling state.

5. A method of controlling a disk driving unit that performs read/write of data with a head, the method comprising:

detecting a vibration of the disk driving unit using a rate of write fault occurrence, the rate of write fault occurrence being obtained from at least one of a shock sensor and the position signal; and

controlling the disk driving unit to switch a sensitivity of the shock sensor based on the detected vibration.

6. A computer-readable recording medium that stores a computer program for controlling a disk driving unit that performs read/write of data with a head, wherein

the computer program causes a computer to execute:

detecting a vibration of the disk driving unit using a rate of write fault occurrence, the rate of write fault occurrence being obtained from at least one of a shock sensor and the position signal; and

controlling the disk driving unit based on the detected vibration to switch a sensitivity of the shock sensor.

7. A disk control apparatus that controls a disk driving unit that performs read/write of data with a head, the disk control apparatus comprising:

a vibration detecting unit that detects a vibration of the disk driving unit; and

a disk control unit that controls the disk driving unit based on the detected vibration,

wherein the disk control unit rejects, when the vibration is detected, a seek error signal, and maintains a settling state.

8. The disk control apparatus according to claim 7, wherein

the vibration detecting unit detects the vibration using a position signal indicating a position of the head.

9. The disk control apparatus according to claim 8, wherein

the vibration detecting unit detects the vibration by filtering the position signal.

10. The disk control apparatus according to claim 7, wherein

the vibration detecting unit detects the vibration using a rate of write fault occurrence.

11. The disk control apparatus according to claim 10, wherein

the rate of write fault occurrence is obtained from at least one of a shock sensor and the position signal.

12. The disk control apparatus according to claim 11, wherein

the disk control unit controls the disk driving unit to switch a sensitivity of the shock sensor based on the detected vibration.

13. The disk control apparatus according to claim 7, wherein

the disk control unit tightens, when a predetermined vibration is detected, a write off track slice that is a condition for stopping the write of data in a disk.

14. The disk control apparatus according to claim 13, wherein

the disk control unit tightens the write off track slice based on at least one of a characteristic, a temperature, and a customization level of the head.