JPS5641560A - Servo-signal writing system - Google Patents
Servo-signal writing systemInfo
- Publication number
- JPS5641560A JPS5641560A JP11760379A JP11760379A JPS5641560A JP S5641560 A JPS5641560 A JP S5641560A JP 11760379 A JP11760379 A JP 11760379A JP 11760379 A JP11760379 A JP 11760379A JP S5641560 A JPS5641560 A JP S5641560A
- Authority
- JP
- Japan
- Prior art keywords
- disk
- track pitch
- outside
- servo
- position sensitivity
- 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.)
- Granted
Links
- 230000035945 sensitivity Effects 0.000 abstract 3
- 230000014509 gene expression Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/02—Driving or moving of heads
- G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following
Landscapes
- Moving Of The Head To Find And Align With The Track (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Abstract
PURPOSE:To obtain a constant position sensitivity extending over the inside and outside circumferences of the disk, by making a track pitch of the servo-signal increase gradually toward the outside circumference of the disk. CONSTITUTION:An even signal output in case the head is right over the even pattern, source signal outputs from the adjacent odd track, a track pitch, and position sensitivity are made Ve, VOL and VOR T, and SP, respectively, they are shown in the following expressions. In this case, if the track pitch is made large and small in the outside circumference side and the inside circumference side of the disk, respectively, the numerator is also varied in the same direction as variation of the denominator, but since the variation rate of the numerator is larger, the result is SpOUT>SpIN. Accordingly, it is possible to obtain a constant position sensitivity extending over the inside and outside circumferences of the disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11760379A JPS5641560A (en) | 1979-09-13 | 1979-09-13 | Servo-signal writing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11760379A JPS5641560A (en) | 1979-09-13 | 1979-09-13 | Servo-signal writing system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5641560A true JPS5641560A (en) | 1981-04-18 |
| JPS6255227B2 JPS6255227B2 (en) | 1987-11-18 |
Family
ID=14715869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11760379A Granted JPS5641560A (en) | 1979-09-13 | 1979-09-13 | Servo-signal writing system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5641560A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58147802A (en) * | 1982-02-26 | 1983-09-02 | Nec Corp | Information recording method of floppy disk |
| JPS6098530U (en) * | 1983-12-05 | 1985-07-05 | 三菱自動車工業株式会社 | suspension seat |
| JPH03203071A (en) * | 1989-12-28 | 1991-09-04 | Fujitsu Ltd | Servo signal writing-in method and servo disk medium in magnetic disk device |
-
1979
- 1979-09-13 JP JP11760379A patent/JPS5641560A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58147802A (en) * | 1982-02-26 | 1983-09-02 | Nec Corp | Information recording method of floppy disk |
| JPS6098530U (en) * | 1983-12-05 | 1985-07-05 | 三菱自動車工業株式会社 | suspension seat |
| JPH0213225Y2 (en) * | 1983-12-05 | 1990-04-12 | ||
| JPH03203071A (en) * | 1989-12-28 | 1991-09-04 | Fujitsu Ltd | Servo signal writing-in method and servo disk medium in magnetic disk device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6255227B2 (en) | 1987-11-18 |
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