JPS55139667A - Disk unit - Google Patents

Disk unit

Info

Publication number
JPS55139667A
JPS55139667A JP4765679A JP4765679A JPS55139667A JP S55139667 A JPS55139667 A JP S55139667A JP 4765679 A JP4765679 A JP 4765679A JP 4765679 A JP4765679 A JP 4765679A JP S55139667 A JPS55139667 A JP S55139667A
Authority
JP
Japan
Prior art keywords
area
recording
track
information
protective
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
JP4765679A
Other languages
Japanese (ja)
Inventor
Masayoshi Kamo
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP4765679A priority Critical patent/JPS55139667A/en
Publication of JPS55139667A publication Critical patent/JPS55139667A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To increase reliance on seeking operation by providing a protective track area surrounding a recording area and then by rapidly returning a head into the protective track area to stand by there after the operation of recording and reproduction ends.
CONSTITUTION: A recording surface consists of the 1st protective track area 10, the 1st recording area 11, the 2nd protective track area 12, and the 2nd recording area 13. Then, the 1st recording area 11 and the 2nd recording area 13 consist of track positioning in formation areas 14 and information recording and reproduction areas 15. The part encircled by dotted lines 16 is composed of the 1st protective track area 17, recording area 18, the 2nd protective track area 19, information recording and reproduction area 20, track positioning information area 21, and sector information pattern area 22 stored with the position of the track positioning area and decidable information patterns.
COPYRIGHT: (C)1980,JPO&Japio
JP4765679A 1979-04-18 1979-04-18 Disk unit Pending JPS55139667A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4765679A JPS55139667A (en) 1979-04-18 1979-04-18 Disk unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4765679A JPS55139667A (en) 1979-04-18 1979-04-18 Disk unit

Publications (1)

Publication Number Publication Date
JPS55139667A true JPS55139667A (en) 1980-10-31

Family

ID=12781292

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4765679A Pending JPS55139667A (en) 1979-04-18 1979-04-18 Disk unit

Country Status (1)

Country Link
JP (1) JPS55139667A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6326874A (en) * 1987-04-17 1988-02-04 Alps Electric Co Ltd Hard disk unit
US4912585A (en) * 1988-04-28 1990-03-27 International Business Machines Corporation Discrete track thin film magnetic recording disk with embedded servo information

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6326874A (en) * 1987-04-17 1988-02-04 Alps Electric Co Ltd Hard disk unit
US4912585A (en) * 1988-04-28 1990-03-27 International Business Machines Corporation Discrete track thin film magnetic recording disk with embedded servo information

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