DISK STORAGE APPARATUS AND METHOD FOR RECORDING DATA

• US 20110249356A1
• Filed: 01/18/2011
• Published: 10/13/2011
• Est. Priority Date: 04/12/2010
• Status: Abandoned Application

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: MATSUO, Takashi
• Application Number:
  US13/008,744
• Publication Number:
  US 20110249356A1
• Time in Patent Office: Days
• US Class Current: 360/39
• CPC Class Codes: G11B 20/1258 where blocks are arranged within multiple radial zones, e.g. Zone Bit Recording or Constant Density Recording discs, MCAV discs, MCLV discs
• CPC Class Codes: G11B 2020/1232 sector, i.e. the minimal addressable physical data unit
• CPC Class Codes: G11B 2020/1242 the area forming one or more zones, wherein each zone is shaped like an annulus or a circular sector
• CPC Class Codes: G11B 2020/1287 Synchronisation pattern, e.g. VCO fields
• CPC Class Codes: G11B 2220/2516 Hard disks

Abstract

According to one embodiment, a disk storage apparatus includes a data recording module and a controller. The data recording module is configured to record a first sync mark and a second sync mark in each data sector provided on a disk. The controller is configured to control the data recording module, causing the data recording module to omit recording the second sync mark in one of segments into which the data sector is split.

Claims

1. A disk storage apparatus comprising:

a data recording module configured to record a first sync mark and a second sync mark in a data sector provided on a disk; and

a controller configured to control the data recording module, causing the data recording module to omit recording the second sync mark in one of segments into which the data sector is split.

2. The disk storage apparatus of claim 1, further comprising a data reproduction module configured to reproduce data from the data sector split into segments,

wherein the controller controls the data reproduction module, causing the data reproduction module to reproduce the data by using prescribed dummy data, if the first sync mark cannot be detected from the segment that the second sync mark is omitted.

3. The disk storage apparatus of claim 1, wherein the controller is configured to perform a prescribed error process if the first sync mark is not detected from the segment that the second sync mark is omitted and if neither the first sync mark nor the second sync mark is detected from the other segment.

4. The disk storage apparatus of claim 1, further comprising a data reproduction module configured to reproduce data from the data sector split into segments,

wherein the controller controls the data reproduction module, causing the data reproduction module to reproduce the data by using data and prescribed dummy data reproduced from the other segment, if the first sync mark cannot be detected from the segment that the second sync mark is omitted.

5. A disk control apparatus comprising:

a data recording module configured to record a first sync mark and a second sync mark in a data sector provided on a disk; and

a controller configured to control the data recording module, causing the data recording module to omit recording the second sync mark in one of segments into which the data sector is split.

6. The disk control apparatus of claim 5, further comprising a data reproduction module configured to reproduce data from the data sector split into segments,

wherein the controller controls the data reproduction module, causing the data reproduction module to reproduce the data by using prescribed dummy data, if the first sync mark cannot be detected from the segment that the second sync mark is omitted.

7. The disk control apparatus of claim 5, wherein the controller is configured to perform a prescribed error process if the first sync mark is not detected from the segment that the second sync mark is omitted and if neither the first sync mark nor the second sync mark is detected from the other segment.

8. The disk control apparatus of claim 5, further comprising a data reproduction module configured to reproduce data from the data sector split into segments,

wherein the controller controls the data reproduction module, causing the data reproduction module to reproduce the data by using data and prescribed dummy data reproduced from the other segment, if the first sync mark cannot be detected from the segment that the second sync mark is omitted.

9. A method of recording and reproducing data, for use in a disk storage apparatus designed to record first and second sync marks and data on a disk, the method comprising:

recording data in a data sector split into a plurality of segments;

recording the first sync mark and omitting the second sync mark, in a first segment; and

recording the first sync mark and the second sync mark in a second segment.

10. The method of claim 9, further comprising:

reproducing data from the data sector split into segments; and

reproducing the data by using prescribed dummy data, if the first sync mark cannot be detected from the first segment.

11. The method of claim 9, further comprising:

reproducing data from the data sector split into segments; and

producing data by using data and prescribed dummy data reproduced from the second segment, if the first sync mark cannot be detected from the first segment.

12. The method of claim 9, further comprising:

reproducing data from the data sector split into segments; and

performing a prescribed error process if the first sync mark is not detected from the first segment and if neither the first sync mark nor the second sync mark is detected from the second segment.