JPS54134409A - Track servo device - Google Patents

Track servo device

Info

Publication number
JPS54134409A
JPS54134409A JP4117478A JP4117478A JPS54134409A JP S54134409 A JPS54134409 A JP S54134409A JP 4117478 A JP4117478 A JP 4117478A JP 4117478 A JP4117478 A JP 4117478A JP S54134409 A JPS54134409 A JP S54134409A
Authority
JP
Japan
Prior art keywords
track
signals
head
heads
servo
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
JP4117478A
Other languages
Japanese (ja)
Other versions
JPS6057136B2 (en
Inventor
Kazuhiro Shigemata
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 JP4117478A priority Critical patent/JPS6057136B2/en
Publication of JPS54134409A publication Critical patent/JPS54134409A/en
Publication of JPS6057136B2 publication Critical patent/JPS6057136B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To make the width of a head cap narrower than that of a servo-track by using as discriminating signals the signals which are prepared by delaying and superposing a portion of the servo-track reproducing signals of a plurality of heads by an oblieque scanning operation.
CONSTITUTION: The servo-track 2 of a tape 1 which is run by a delivery motor 22, is scanned obliequely by heads 12 and 13 so that the reproduced signals of the head 13 are delayed by a delay circuit 7 in accordance with the spacing between the heads 12 and 13 and are superposed upon the reproduced signals of the head 12 by an adder 18. As a result, the gap between the heads 12 and 13 is made narrower than the width of the track 2 so that the discriminating signals symmetric with respect to a mark 7 are generated from the asymmetric signals with respect to the mark 7. As a result, the tracking operation by the head of the narrower gap than the track width is performed through a track servo-motor 21 so that the high density recording operation can be accomplished by the multi-track head having a narrow gap.
COPYRIGHT: (C)1979,JPO&Japio
JP4117478A 1978-04-10 1978-04-10 Track servo system Expired JPS6057136B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4117478A JPS6057136B2 (en) 1978-04-10 1978-04-10 Track servo system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4117478A JPS6057136B2 (en) 1978-04-10 1978-04-10 Track servo system

Publications (2)

Publication Number Publication Date
JPS54134409A true JPS54134409A (en) 1979-10-18
JPS6057136B2 JPS6057136B2 (en) 1985-12-13

Family

ID=12601055

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4117478A Expired JPS6057136B2 (en) 1978-04-10 1978-04-10 Track servo system

Country Status (1)

Country Link
JP (1) JPS6057136B2 (en)

Also Published As

Publication number Publication date
JPS6057136B2 (en) 1985-12-13

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