JPS63275080A - Tracking method for optical information processing device - Google Patents

Tracking method for optical information processing device

Info

Publication number
JPS63275080A
JPS63275080A JP11096587A JP11096587A JPS63275080A JP S63275080 A JPS63275080 A JP S63275080A JP 11096587 A JP11096587 A JP 11096587A JP 11096587 A JP11096587 A JP 11096587A JP S63275080 A JPS63275080 A JP S63275080A
Authority
JP
Japan
Prior art keywords
tracking
offset
address number
amt
obtd
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
JP11096587A
Other languages
Japanese (ja)
Inventor
Hideki Segawa
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP11096587A priority Critical patent/JPS63275080A/en
Publication of JPS63275080A publication Critical patent/JPS63275080A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To surely obtain tracking by discriminating whether the tracking is on the specified track or not based on an address signal at the time when it is obtd., and executing access to repeatedly by giving an offset amt. in the reverse direction to the off direction in a different case.
CONSTITUTION: An offset amt. is varied on each retrial time in the reference offset amt. Vo each. The direction given of the offset is varied by the retrial time of odd numbers and that of even numbers. And when the tracking is obtd., the address number is read, whether it is coincident with the specified address number concerning the sector tried to have access to or not is decided and in the case of its coincidence with the specified address number, the tracking is executed by maintaining the offset amt. and in the case of no specified address number, the off direction is detected based on the read address number and thereafter the offset amt. is gradually increased on the reverse direction thereof to execute the tracking. The tracking is thus obtd. surely and the information can be recorded and reproduced without mistakes.
COPYRIGHT: (C)1988,JPO&Japio
JP11096587A 1987-05-07 1987-05-07 Tracking method for optical information processing device Pending JPS63275080A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11096587A JPS63275080A (en) 1987-05-07 1987-05-07 Tracking method for optical information processing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11096587A JPS63275080A (en) 1987-05-07 1987-05-07 Tracking method for optical information processing device

Publications (1)

Publication Number Publication Date
JPS63275080A true JPS63275080A (en) 1988-11-11

Family

ID=14548998

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11096587A Pending JPS63275080A (en) 1987-05-07 1987-05-07 Tracking method for optical information processing device

Country Status (1)

Country Link
JP (1) JPS63275080A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02134729A (en) * 1988-11-16 1990-05-23 Matsushita Electric Ind Co Ltd Recording and reproducing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02134729A (en) * 1988-11-16 1990-05-23 Matsushita Electric Ind Co Ltd Recording and reproducing device

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