JPS56111960A - Magnetic disk device - Google Patents

Magnetic disk device

Info

Publication number
JPS56111960A
JPS56111960A JP1527180A JP1527180A JPS56111960A JP S56111960 A JPS56111960 A JP S56111960A JP 1527180 A JP1527180 A JP 1527180A JP 1527180 A JP1527180 A JP 1527180A JP S56111960 A JPS56111960 A JP S56111960A
Authority
JP
Japan
Prior art keywords
track
fixed head
access
flag
address
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
JP1527180A
Other languages
Japanese (ja)
Inventor
Yasuo Kurihara
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 JP1527180A priority Critical patent/JPS56111960A/en
Publication of JPS56111960A publication Critical patent/JPS56111960A/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
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
    • G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs

Landscapes

  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

PURPOSE:To reduce access time for a magnetic disk device containing both a mobile head and a fixed head, by storing the information having a high access repeat in the track of the fixed head. CONSTITUTION:The correspondence table memory 110 contains a flag showing whether the fixed head track address and the mobile head track are made to correspond to the fixed head track in correspondence to the mobile head track address, i.e., showing 1 and 0. Both the fixed head track address and the flag are read out of the memory 110 by the track address 2 that is given during the seek instruction. Then an access is given to the fixed head track by the fixed head selection circuit 31 when the flag is 1, and the track address during the seek instruction is applied to the mobile head selection circuit 30 from the address decoder 60 when the flag is 0 to give an access to the mobile head track. As a result, the seek action is eliminated when an access is given to the fixed head track, thus reducing an access time.
JP1527180A 1980-02-08 1980-02-08 Magnetic disk device Pending JPS56111960A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1527180A JPS56111960A (en) 1980-02-08 1980-02-08 Magnetic disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1527180A JPS56111960A (en) 1980-02-08 1980-02-08 Magnetic disk device

Publications (1)

Publication Number Publication Date
JPS56111960A true JPS56111960A (en) 1981-09-04

Family

ID=11884190

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1527180A Pending JPS56111960A (en) 1980-02-08 1980-02-08 Magnetic disk device

Country Status (1)

Country Link
JP (1) JPS56111960A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6159627A (en) * 1984-08-29 1986-03-27 Fujitsu Ltd Optical disc device
JPH01179280A (en) * 1987-12-29 1989-07-17 Osaka Gas Co Ltd Method for storing rewritable recording medium and for allocating store area
JPH0249274A (en) * 1988-08-10 1990-02-19 Osaka Gas Co Ltd Method for storing information in reloadable recording medium

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6159627A (en) * 1984-08-29 1986-03-27 Fujitsu Ltd Optical disc device
JPH01179280A (en) * 1987-12-29 1989-07-17 Osaka Gas Co Ltd Method for storing rewritable recording medium and for allocating store area
JPH0249274A (en) * 1988-08-10 1990-02-19 Osaka Gas Co Ltd Method for storing information in reloadable recording medium

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