JPS6481684A - Positioning controller for magnetic disc - Google Patents

Positioning controller for magnetic disc

Info

Publication number
JPS6481684A
JPS6481684A JP62237122A JP23712287A JPS6481684A JP S6481684 A JPS6481684 A JP S6481684A JP 62237122 A JP62237122 A JP 62237122A JP 23712287 A JP23712287 A JP 23712287A JP S6481684 A JPS6481684 A JP S6481684A
Authority
JP
Japan
Prior art keywords
signal
track
detector
follow
switch
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
JP62237122A
Other languages
Japanese (ja)
Inventor
Eisaku Saiki
Toshiyuki Haruna
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP62237122A priority Critical patent/JPS6481684A/en
Publication of JPS6481684A publication Critical patent/JPS6481684A/en
Pending legal-status Critical Current

Links

Landscapes

  • Moving Of The Head To Find And Align With The Track (AREA)
  • Control Of Linear Motors (AREA)

Abstract

PURPOSE:To enable detecting a track position with a high accuracy by detecting the signal amplitude of a position signal. CONSTITUTION:At the time of seek operation, a switch 6 is connected with a contact 6a to follow the speed control mode. Also at the time of following operation, the switch 6 is connected with a contact 6b to follow the position control mode. On the other hand, a pulse signal is outputted from a track-cross detector 13, whenever a servo head and a read-write head cross a cylinder. A microcomputer 1 outputs a desired speed signal on the basis of the output signal of said track-cross detector 13. Further, a track-position detector 14 sample-holds the peak value of a position signal to output a track-position detection signal. In this manner, it is possible to conduct a positioning control even to the details.
JP62237122A 1987-09-24 1987-09-24 Positioning controller for magnetic disc Pending JPS6481684A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62237122A JPS6481684A (en) 1987-09-24 1987-09-24 Positioning controller for magnetic disc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62237122A JPS6481684A (en) 1987-09-24 1987-09-24 Positioning controller for magnetic disc

Publications (1)

Publication Number Publication Date
JPS6481684A true JPS6481684A (en) 1989-03-27

Family

ID=17010735

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62237122A Pending JPS6481684A (en) 1987-09-24 1987-09-24 Positioning controller for magnetic disc

Country Status (1)

Country Link
JP (1) JPS6481684A (en)

Similar Documents

Publication Publication Date Title
EP0094828A3 (en) Apparatus for indicating the position of a member
EP0299771A3 (en) Wave motor driving circuit
EP0304299A3 (en) An optical disc drive
KR900003004B1 (en) Disk player
AU5281986A (en) Servo circuit for use with a reproducing apparatus
JPS6481684A (en) Positioning controller for magnetic disc
MY104528A (en) Optical disc servo apparatus.
JPS5613572A (en) Floppy disk unit
JPS5587350A (en) Magnetic disk device
JPS643826A (en) Optical disk device
JPS56145565A (en) Disc driving device
JPS6414783A (en) Floppy disk device
JPS5720970A (en) Control system for magnetic head position
JPS5755530A (en) Head tracking controller
JPS56114148A (en) Rotary head type magnetic recording and reproducing device
JPS648565A (en) Magnetic disk device
JPS6449181A (en) Magnetic disk device
JPS6435751A (en) Information signal reproducing device
JPS57210483A (en) Origin returning method for head of magnetic disk device
JPS641169A (en) Optical disk device
JPS5613566A (en) Generating circuit for track-crossing pulse
JPS6466877A (en) Carriage deriving arm for disk device
JPS6423471A (en) Track seek device
JPS56145564A (en) Coaxial disc pack driving device
JPS6421773A (en) Magnetic disk device