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
Application number
JP18515287A
Other languages
Japanese (ja)
Inventor
Akihiko Shimizu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IBARAKI NIPPON DENKI KK
NEC Ibaraki Ltd
Original Assignee
IBARAKI NIPPON DENKI KK
NEC Ibaraki Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by IBARAKI NIPPON DENKI KK, NEC Ibaraki Ltd filed Critical IBARAKI NIPPON DENKI KK
Priority to JP18515287A priority Critical patent/JPS6430072A/en
Publication of JPS6430072A publication Critical patent/JPS6430072A/en
Pending legal-status Critical Current

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.
JP18515287A 1987-07-24 1987-07-24 Address mark detecting system, Pending JPS6430072A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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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