JPS5629872A - Disc device having tracking correction circuit - Google Patents

Disc device having tracking correction circuit

Info

Publication number
JPS5629872A
JPS5629872A JP10620179A JP10620179A JPS5629872A JP S5629872 A JPS5629872 A JP S5629872A JP 10620179 A JP10620179 A JP 10620179A JP 10620179 A JP10620179 A JP 10620179A JP S5629872 A JPS5629872 A JP S5629872A
Authority
JP
Japan
Prior art keywords
track
data
head
servo
data plane
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
JP10620179A
Other languages
Japanese (ja)
Inventor
Motoyuki Osada
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 JP10620179A priority Critical patent/JPS5629872A/en
Publication of JPS5629872A publication Critical patent/JPS5629872A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To enable to save the data head alignment adjusting work, by detecting the shift amount from the reference track written in each data plane and correcting the data head to accurate track position.
CONSTITUTION: The servo band is placed by one on each data plane where the reference track is written in. When the servo head reads the first servo track, each data head reads in the reference track of the specified data plane sequentially, the position information of the servo head and the reference track position information are compared, and the off-track amount is calculated and stored at the register 2. When the data plane in use is selected with the instruction from the main body, the off-track amount VR and the position signal POS of conventional circuit are input to the error amplifier 3, and the offset correction signal being the output is input to the power amplifier 4, the output drives the voice coil motor and the data head is correctly positioned to the specified data track.
COPYRIGHT: (C)1981,JPO&Japio
JP10620179A 1979-08-21 1979-08-21 Disc device having tracking correction circuit Pending JPS5629872A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10620179A JPS5629872A (en) 1979-08-21 1979-08-21 Disc device having tracking correction circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10620179A JPS5629872A (en) 1979-08-21 1979-08-21 Disc device having tracking correction circuit

Publications (1)

Publication Number Publication Date
JPS5629872A true JPS5629872A (en) 1981-03-25

Family

ID=14427543

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10620179A Pending JPS5629872A (en) 1979-08-21 1979-08-21 Disc device having tracking correction circuit

Country Status (1)

Country Link
JP (1) JPS5629872A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4833551A (en) * 1987-02-24 1989-05-23 Konishiroku Photo Industries Co., Ltd. Dual head servo system and method for a magnetic disk
US5053897A (en) * 1988-12-23 1991-10-01 Mitsubishi Denki K.K. Head position controlling circuit for disk unit including servo head selection

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49117007A (en) * 1973-03-09 1974-11-08
JPS5491307A (en) * 1977-12-28 1979-07-19 Fujitsu Ltd Head positioning device for magnetic disc apparatus
JPS54119907A (en) * 1978-03-10 1979-09-18 Hokushin Electric Works Magnetic disk memory
JPS54158207A (en) * 1978-06-05 1979-12-13 Nec Corp Head offset controller of movable head type
JPS54158206A (en) * 1978-06-05 1979-12-13 Nec Corp Servo-information recorder of magnetic disc memory

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49117007A (en) * 1973-03-09 1974-11-08
JPS5491307A (en) * 1977-12-28 1979-07-19 Fujitsu Ltd Head positioning device for magnetic disc apparatus
JPS54119907A (en) * 1978-03-10 1979-09-18 Hokushin Electric Works Magnetic disk memory
JPS54158207A (en) * 1978-06-05 1979-12-13 Nec Corp Head offset controller of movable head type
JPS54158206A (en) * 1978-06-05 1979-12-13 Nec Corp Servo-information recorder of magnetic disc memory

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4833551A (en) * 1987-02-24 1989-05-23 Konishiroku Photo Industries Co., Ltd. Dual head servo system and method for a magnetic disk
US5053897A (en) * 1988-12-23 1991-10-01 Mitsubishi Denki K.K. Head position controlling circuit for disk unit including servo head selection

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