JPS6432472A - Head position controller - Google Patents

Head position controller

Info

Publication number
JPS6432472A
JPS6432472A JP18838087A JP18838087A JPS6432472A JP S6432472 A JPS6432472 A JP S6432472A JP 18838087 A JP18838087 A JP 18838087A JP 18838087 A JP18838087 A JP 18838087A JP S6432472 A JPS6432472 A JP S6432472A
Authority
JP
Japan
Prior art keywords
head
signal
moving speed
target track
speed
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
JP18838087A
Other languages
Japanese (ja)
Inventor
Hiroaki Yada
Yasuaki Suzuki
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP18838087A priority Critical patent/JPS6432472A/en
Publication of JPS6432472A publication Critical patent/JPS6432472A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To shorten the seek operation time and the settling time, and to stabilize the follow-up control by executing the follow-up control after having decreased suddenly a head moving speed. CONSTITUTION:A head moving speed is controlled by obtaining a head position signal by a head position detecting sensor 6, obtaining a head moving speed signal from the head position signal, comparing a speed profile signal having at least a positive speed and the speed signal in a target track obtained in accordance with a difference of the present track position and the target track position and controlling a head driving motor 5. Also, when it is detected that a head passes through the target track by a head position signal, a brake current corresponding to a moving speed of the head is supplied to the head driving motor 5, and after decelerating enough the moving speed of the head, the head is positioned exactly to the target track by the head position signal. In such a way, the seek operation time and the settling time are shortened, and the follow-up control can be stably executed.
JP18838087A 1987-07-28 1987-07-28 Head position controller Pending JPS6432472A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18838087A JPS6432472A (en) 1987-07-28 1987-07-28 Head position controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18838087A JPS6432472A (en) 1987-07-28 1987-07-28 Head position controller

Publications (1)

Publication Number Publication Date
JPS6432472A true JPS6432472A (en) 1989-02-02

Family

ID=16222609

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18838087A Pending JPS6432472A (en) 1987-07-28 1987-07-28 Head position controller

Country Status (1)

Country Link
JP (1) JPS6432472A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5301174A (en) * 1989-07-14 1994-04-05 Sharp Kabushiki Kaisha Optical disk recording and reproducing apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5301174A (en) * 1989-07-14 1994-04-05 Sharp Kabushiki Kaisha Optical disk recording and reproducing apparatus

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