JPS57130217A - Magnetic disk device - Google Patents

Magnetic disk device

Info

Publication number
JPS57130217A
JPS57130217A JP1614381A JP1614381A JPS57130217A JP S57130217 A JPS57130217 A JP S57130217A JP 1614381 A JP1614381 A JP 1614381A JP 1614381 A JP1614381 A JP 1614381A JP S57130217 A JPS57130217 A JP S57130217A
Authority
JP
Japan
Prior art keywords
data
clock information
circuit
head
track
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
JP1614381A
Other languages
Japanese (ja)
Inventor
Hideo Hirao
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP1614381A priority Critical patent/JPS57130217A/en
Publication of JPS57130217A publication Critical patent/JPS57130217A/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
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/16—Digital recording or reproducing using non self-clocking codes, i.e. the clock signals are either recorded in a separate clocking track or in a combination of several information tracks

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

PURPOSE:To enable high-density storage by carrying clock information on a recording medium, and providing a data discriminating circuit which discriminate data read out by the clock information and a circuit which determines writing timing. CONSTITUTION:One or more clock information tracks 2 and 3 are provided with heads 5 and 6 for reading clock information in addition to a head 7 for a data information track 4. Data read from the data information track 4 is discriminated 11 by a data selection instruction 12 and the clock information to output data 13 and a window signal 14. Writing timing is determined 15 by a write data signal 16 from a host system and a write data strobe signal 17 and a data window signal 14 to drive the head for the data track. A read/write switching circuit 18 connects the terminal of the head to a readout amplifying circuit 8 or a writing circuit 15.
JP1614381A 1981-02-05 1981-02-05 Magnetic disk device Pending JPS57130217A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1614381A JPS57130217A (en) 1981-02-05 1981-02-05 Magnetic disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1614381A JPS57130217A (en) 1981-02-05 1981-02-05 Magnetic disk device

Publications (1)

Publication Number Publication Date
JPS57130217A true JPS57130217A (en) 1982-08-12

Family

ID=11908268

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1614381A Pending JPS57130217A (en) 1981-02-05 1981-02-05 Magnetic disk device

Country Status (1)

Country Link
JP (1) JPS57130217A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5065142A (en) * 1973-10-09 1975-06-02

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5065142A (en) * 1973-10-09 1975-06-02

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