JPS6427084A - Track access method for information recording and reproducing device - Google Patents

Track access method for information recording and reproducing device

Info

Publication number
JPS6427084A
JPS6427084A JP18231487A JP18231487A JPS6427084A JP S6427084 A JPS6427084 A JP S6427084A JP 18231487 A JP18231487 A JP 18231487A JP 18231487 A JP18231487 A JP 18231487A JP S6427084 A JPS6427084 A JP S6427084A
Authority
JP
Japan
Prior art keywords
track
detected
signal
counting
optical
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
JP18231487A
Other languages
Japanese (ja)
Inventor
Hideki Hosoya
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP18231487A priority Critical patent/JPS6427084A/en
Publication of JPS6427084A publication Critical patent/JPS6427084A/en
Pending legal-status Critical Current

Links

Landscapes

  • Moving Of Head For Track Selection And Changing (AREA)

Abstract

PURPOSE:To make track counting correct and to speedily and stably execute an access to a desired information track by masking a detecting signal in an area between the tracks in which an optical head crosses. CONSTITUTION:In the condition of stopping an optical card 1, an optical head 18 is moved, reflected light from an optical beam spot is detected by an optical detector 23, the number of tracking tracks is calculated, and a speed signal is detected and formed 71 based on a light quantity signal from the detector 23. At an MPU 10, when a first track crossing is detected, a mask signal is outputted in the area between the tracks from a memory 76 based on the detecting speed. A counting is executed based on the mask signal, a correct crossing track number is seeked, and the track number is detected by counting this. As this result, the access to the information track to be aimed is executed.
JP18231487A 1987-07-23 1987-07-23 Track access method for information recording and reproducing device Pending JPS6427084A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18231487A JPS6427084A (en) 1987-07-23 1987-07-23 Track access method for information recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18231487A JPS6427084A (en) 1987-07-23 1987-07-23 Track access method for information recording and reproducing device

Publications (1)

Publication Number Publication Date
JPS6427084A true JPS6427084A (en) 1989-01-30

Family

ID=16116137

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18231487A Pending JPS6427084A (en) 1987-07-23 1987-07-23 Track access method for information recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS6427084A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0538025A2 (en) * 1991-10-18 1993-04-21 International Business Machines Corporation Disk drive

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0538025A2 (en) * 1991-10-18 1993-04-21 International Business Machines Corporation Disk drive
US5426625A (en) * 1991-10-18 1995-06-20 International Business Machines Corporation Masking of tracking error signal abnormalities due to media defects

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