JPS55139669A - Disk device - Google Patents
Disk deviceInfo
- Publication number
- JPS55139669A JPS55139669A JP4765579A JP4765579A JPS55139669A JP S55139669 A JPS55139669 A JP S55139669A JP 4765579 A JP4765579 A JP 4765579A JP 4765579 A JP4765579 A JP 4765579A JP S55139669 A JPS55139669 A JP S55139669A
- Authority
- JP
- Japan
- Prior art keywords
- pattern
- servo
- head
- recording
- servo pattern
- 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
Landscapes
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
- Moving Of The Head To Find And Align With The Track (AREA)
Abstract
PURPOSE: To attain easily rerecording on an erased recording meidum by reproducing a servo pattern in a track positioning inoformation area via the opposite head and by generating the servo pattern by a timing circuit in a disk device.
CONSTITUTION: Magnetic head moving unit 16 is put into operation to move heads 9 and 11 to the outmost circumferential servo track position where the servo pattern of magnetic head 11 has been recorded. Head 11 reproduce the servo pattern in a track positioning information area and a track positioning control circuit is also put into operation by the information to position waveform of a pattern in the information area of recording medium 2 is A/D-converted by information processing circuit 21 and servo timing circuit 22 extracts a pattern signal for timing corrections; and recording circuit 20 flows a recording current to head 9 and the servo pattern is recorded in the informatin area of medium 1. Consequently, the rerecording of pattern comes into effect easily.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4765579A JPS55139669A (en) | 1979-04-18 | 1979-04-18 | Disk device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4765579A JPS55139669A (en) | 1979-04-18 | 1979-04-18 | Disk device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55139669A true JPS55139669A (en) | 1980-10-31 |
Family
ID=12781262
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4765579A Pending JPS55139669A (en) | 1979-04-18 | 1979-04-18 | Disk device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55139669A (en) |
-
1979
- 1979-04-18 JP JP4765579A patent/JPS55139669A/en active Pending
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