JPS5534305A - Head position detecting system - Google Patents

Head position detecting system

Info

Publication number
JPS5534305A
JPS5534305A JP10548378A JP10548378A JPS5534305A JP S5534305 A JPS5534305 A JP S5534305A JP 10548378 A JP10548378 A JP 10548378A JP 10548378 A JP10548378 A JP 10548378A JP S5534305 A JPS5534305 A JP S5534305A
Authority
JP
Japan
Prior art keywords
head
track
data
recording
manner
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
JP10548378A
Other languages
Japanese (ja)
Inventor
Masateru Sasaki
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 JP10548378A priority Critical patent/JPS5534305A/en
Publication of JPS5534305A publication Critical patent/JPS5534305A/en
Pending legal-status Critical Current

Links

Landscapes

  • Moving Of Head For Track Selection And Changing (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)

Abstract

PURPOSE: To record the phase of the data signal on the dajacent track located on the rotating recording medium by shifting it by a predetermined amount, and detect the difference of the amplitude thereof, thereby detect the reading head position.
CONSTITUTION: On the magnetic disc 11, the data region D0... for recording the data and the servo region S0... for recording the track position are alternatingly disponsed. On the data region D0..., the data track a0... is formed. The recording is carried put in such a manner that the phases of the recorded data signals on the adjacent tracks to each other are shifted from each other by 180°. In this manner, when the head 12 is situated on the track and when the head is situated on a border line of the track, the signals different in the maximum amplitude are generated from the head 12. Accordingly, the signal from the head 12 when the head 12 moves the track from a point A to a point B is processed and made pulse and this pulse is counted, so that the number of the tracks on which the head 12 passes can be detected. In this manner, the head position can be detected.
COPYRIGHT: (C)1980,JPO&Japio
JP10548378A 1978-08-31 1978-08-31 Head position detecting system Pending JPS5534305A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10548378A JPS5534305A (en) 1978-08-31 1978-08-31 Head position detecting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10548378A JPS5534305A (en) 1978-08-31 1978-08-31 Head position detecting system

Publications (1)

Publication Number Publication Date
JPS5534305A true JPS5534305A (en) 1980-03-10

Family

ID=14408828

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10548378A Pending JPS5534305A (en) 1978-08-31 1978-08-31 Head position detecting system

Country Status (1)

Country Link
JP (1) JPS5534305A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4784311A (en) * 1985-07-25 1988-11-15 Usui Kokusai Sangyo Kabushiki Kaisha Process of producing thick-walled composite metal tubing
JP2006024567A (en) * 2004-07-09 2006-01-26 Valeo Vision Lighting system for vehicle provided with reflector compatibile with several models of lamp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4784311A (en) * 1985-07-25 1988-11-15 Usui Kokusai Sangyo Kabushiki Kaisha Process of producing thick-walled composite metal tubing
JP2006024567A (en) * 2004-07-09 2006-01-26 Valeo Vision Lighting system for vehicle provided with reflector compatibile with several models of lamp

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