JPS6430072A - Address mark detecting system, - Google Patents
Address mark detecting system,Info
- Publication number
- JPS6430072A JPS6430072A JP18515287A JP18515287A JPS6430072A JP S6430072 A JPS6430072 A JP S6430072A JP 18515287 A JP18515287 A JP 18515287A JP 18515287 A JP18515287 A JP 18515287A JP S6430072 A JPS6430072 A JP S6430072A
- Authority
- JP
- Japan
- Prior art keywords
- address mark
- detection
- erase pattern
- detecting
- detected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE:To prevent an address mark from being detected in error due to the defect of a medium by recognizing address mark detection only at the time of detecting an address mark within a fixed time from the detection of an erase pattern. CONSTITUTION:As formats on a disk, an erase pattern is formed between a gap area and a SYNC area and an address mark area is formed between the SYNC area and a BYTE SYNC area. Only when the address mark can be detected within the fixed time after detecting the erase pattern, address mark detection can be recognized, and when the address mark can not be detected, the detection of the succeeding erase pattern is immediately started. Consequently, the generation of address mark misdetection due to the defect of the medium can be prevented and data after detecting the address mark can be correctly read out.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18515287A JPS6430072A (en) | 1987-07-24 | 1987-07-24 | Address mark detecting system, |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18515287A JPS6430072A (en) | 1987-07-24 | 1987-07-24 | Address mark detecting system, |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6430072A true JPS6430072A (en) | 1989-01-31 |
Family
ID=16165765
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18515287A Pending JPS6430072A (en) | 1987-07-24 | 1987-07-24 | Address mark detecting system, |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6430072A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03102883U (en) * | 1990-02-07 | 1991-10-25 | ||
EP0460916A2 (en) * | 1990-06-04 | 1991-12-11 | International Business Machines Corporation | Format and method for recording digital data on record disks with a pre-erasure need to save extra rotations |
-
1987
- 1987-07-24 JP JP18515287A patent/JPS6430072A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03102883U (en) * | 1990-02-07 | 1991-10-25 | ||
EP0460916A2 (en) * | 1990-06-04 | 1991-12-11 | International Business Machines Corporation | Format and method for recording digital data on record disks with a pre-erasure need to save extra rotations |
EP0460916A3 (en) * | 1990-06-04 | 1993-04-21 | International Business Machines Corporation | Format and method for recording digital data on record disks with a pre-erasure need to save extra rotations |
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