JPS55139667A - Disk unit - Google Patents
Disk unitInfo
- 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
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
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)
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 |
-
1979
- 1979-04-18 JP JP4765679A patent/JPS55139667A/en active Pending
Cited By (2)
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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