JPS558604A - Servo system in rotary magnetic recording medium - Google Patents

Servo system in rotary magnetic recording medium

Info

Publication number
JPS558604A
JPS558604A JP7860478A JP7860478A JPS558604A JP S558604 A JPS558604 A JP S558604A JP 7860478 A JP7860478 A JP 7860478A JP 7860478 A JP7860478 A JP 7860478A JP S558604 A JPS558604 A JP S558604A
Authority
JP
Japan
Prior art keywords
signal
center
sliding
movement
head
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.)
Granted
Application number
JP7860478A
Other languages
Japanese (ja)
Other versions
JPS6260749B2 (en
Inventor
Hidetoshi Takahashi
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP7860478A priority Critical patent/JPS558604A/en
Publication of JPS558604A publication Critical patent/JPS558604A/en
Publication of JPS6260749B2 publication Critical patent/JPS6260749B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Moving Of The Head To Find And Align With The Track (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)

Abstract

PURPOSE: To omit the trouble of machanical assembly adjustment to reduce the cost of a device by correcting electrically the disagreement between the rotation center of a rotary magnetic recording and the center of a round track position display means.
CONSTITUTION: Sliding correction signal generation circuit 13 generates correction signal S3 for the purpose of correcting electrically each optical mark off-center sliding movenent generated at magnetic disc 2 rotation time when the rotation center of magnetic disc 2 and each center of optical marks 5a, 5b,... do not agree with each other. Meanwhile, the position of signal head 8 driven by servo motor 11 is taken out as track signal S1 from photo detector 9 and is inputted to servoamplifier 12 through the operation part together with indication signal S4, which indicates the movement destination of signal head 8, and correction signal S3. As a result, even if optical marks perform offcenter sliding movement, this movement is corrected optically, thereby preventing the sliding movement of the magnetic head.
COPYRIGHT: (C)1980,JPO&Japio
JP7860478A 1978-06-30 1978-06-30 Servo system in rotary magnetic recording medium Granted JPS558604A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7860478A JPS558604A (en) 1978-06-30 1978-06-30 Servo system in rotary magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7860478A JPS558604A (en) 1978-06-30 1978-06-30 Servo system in rotary magnetic recording medium

Publications (2)

Publication Number Publication Date
JPS558604A true JPS558604A (en) 1980-01-22
JPS6260749B2 JPS6260749B2 (en) 1987-12-17

Family

ID=13666488

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7860478A Granted JPS558604A (en) 1978-06-30 1978-06-30 Servo system in rotary magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS558604A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS607664A (en) * 1983-06-24 1985-01-16 Toshiba Corp Method for positioning of head
WO1985002933A1 (en) * 1983-12-27 1985-07-04 Ncr Corporation Magnetic record medium and apparatus and method for tracking the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS607664A (en) * 1983-06-24 1985-01-16 Toshiba Corp Method for positioning of head
WO1985002933A1 (en) * 1983-12-27 1985-07-04 Ncr Corporation Magnetic record medium and apparatus and method for tracking the same

Also Published As

Publication number Publication date
JPS6260749B2 (en) 1987-12-17

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