JPS5737781A - Positioning system for data head - Google Patents

Positioning system for data head

Info

Publication number
JPS5737781A
JPS5737781A JP11296880A JP11296880A JPS5737781A JP S5737781 A JPS5737781 A JP S5737781A JP 11296880 A JP11296880 A JP 11296880A JP 11296880 A JP11296880 A JP 11296880A JP S5737781 A JPS5737781 A JP S5737781A
Authority
JP
Japan
Prior art keywords
data
head
servo
position shift
data head
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
JP11296880A
Other languages
Japanese (ja)
Inventor
Keizo Tashiro
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP11296880A priority Critical patent/JPS5737781A/en
Publication of JPS5737781A publication Critical patent/JPS5737781A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/08—Track changing or selecting during transducing operation
    • G11B21/081—Access to indexed tracks or parts of continuous track
    • G11B21/083—Access to indexed tracks or parts of continuous track on discs

Landscapes

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

Abstract

PURPOSE:To correct the position shift of a data head while neither using a special head nor limiting data length, by storing the position shift of the data head detected through reading out alignment information from each data disk. CONSTITUTION:In respective data disk surfaces 20-1-20-3, alignment tracks which correspond to specific servo tracks of a servo disk surface 20-4 are provided. When a servo head 24 is located on the said servo track, each data head 21 reads alignment information from the alignment track to detect the position shift of the data head, which is stored in storing circuit 33a-33c. When the data head 21 is to be positioned on a desired data track, correction is made corresponding to the extent of the said stored position shift and positioning is done. For example, a circuit including a servo signal demodulating circuit 43, an adding amplifier 42, etc., as shown in the figure is used to perform the said positioning.
JP11296880A 1980-08-19 1980-08-19 Positioning system for data head Pending JPS5737781A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11296880A JPS5737781A (en) 1980-08-19 1980-08-19 Positioning system for data head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11296880A JPS5737781A (en) 1980-08-19 1980-08-19 Positioning system for data head

Publications (1)

Publication Number Publication Date
JPS5737781A true JPS5737781A (en) 1982-03-02

Family

ID=14600049

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11296880A Pending JPS5737781A (en) 1980-08-19 1980-08-19 Positioning system for data head

Country Status (1)

Country Link
JP (1) JPS5737781A (en)

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