JPS6448236A - Optical pick-up device - Google Patents

Optical pick-up device

Info

Publication number
JPS6448236A
JPS6448236A JP20383387A JP20383387A JPS6448236A JP S6448236 A JPS6448236 A JP S6448236A JP 20383387 A JP20383387 A JP 20383387A JP 20383387 A JP20383387 A JP 20383387A JP S6448236 A JPS6448236 A JP S6448236A
Authority
JP
Japan
Prior art keywords
access
track signal
time
signal
correcting
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
JP20383387A
Other languages
Japanese (ja)
Inventor
Tatsuaki Sakurai
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 JP20383387A priority Critical patent/JPS6448236A/en
Publication of JPS6448236A publication Critical patent/JPS6448236A/en
Pending legal-status Critical Current

Links

Landscapes

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To execute exact tracking control by extracting off-set quantity to correspond to the access position of a moving optical system from a memory at the time of an access, correcting and removing this off-set quantity from a track signal detected in the access position. CONSTITUTION:In the access time, the access position of a moving optical system 2 is detected by a position sensor 20 at all time and an off-set correcting signal in the access position is extracted from a memory 21 based on the position information and outputted. These track signal before correction and off-set correcting signal are inputted to a differential amplifier 22, for example, as an arithmetic processing means and by subtracting an off-set part from a raw track signal, the track signal in which the off-set part is removed can be obtained. Thus, an off-set component, which is generated by the camber or inclining, etc., of a carriage 19 occurred at the time of working, assembling or adjusting, etc., is removed from the track signal and the exact tracking control can be executed without the influence of the off-set.
JP20383387A 1987-08-17 1987-08-17 Optical pick-up device Pending JPS6448236A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20383387A JPS6448236A (en) 1987-08-17 1987-08-17 Optical pick-up device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20383387A JPS6448236A (en) 1987-08-17 1987-08-17 Optical pick-up device

Publications (1)

Publication Number Publication Date
JPS6448236A true JPS6448236A (en) 1989-02-22

Family

ID=16480459

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20383387A Pending JPS6448236A (en) 1987-08-17 1987-08-17 Optical pick-up device

Country Status (1)

Country Link
JP (1) JPS6448236A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01100736A (en) * 1987-10-14 1989-04-19 Hitachi Ltd Optical disk device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01100736A (en) * 1987-10-14 1989-04-19 Hitachi Ltd Optical disk device

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