JPH0136193B2 - - Google Patents
Info
- Publication number
- JPH0136193B2 JPH0136193B2 JP18566382A JP18566382A JPH0136193B2 JP H0136193 B2 JPH0136193 B2 JP H0136193B2 JP 18566382 A JP18566382 A JP 18566382A JP 18566382 A JP18566382 A JP 18566382A JP H0136193 B2 JPH0136193 B2 JP H0136193B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- pass filter
- information
- low
- error signal
- 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.)
- Expired
Links
- 230000007547 defect Effects 0.000 claims description 56
- 238000001514 detection method Methods 0.000 claims description 46
- 239000003990 capacitor Substances 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 27
- 230000002950 deficient Effects 0.000 description 12
- 238000006073 displacement reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 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)
- Control Of Position Or Direction (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18566382A JPS5975466A (ja) | 1982-10-21 | 1982-10-21 | 情報再生装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18566382A JPS5975466A (ja) | 1982-10-21 | 1982-10-21 | 情報再生装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5975466A JPS5975466A (ja) | 1984-04-28 |
| JPH0136193B2 true JPH0136193B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1989-07-28 |
Family
ID=16174688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18566382A Granted JPS5975466A (ja) | 1982-10-21 | 1982-10-21 | 情報再生装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5975466A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
-
1982
- 1982-10-21 JP JP18566382A patent/JPS5975466A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5975466A (ja) | 1984-04-28 |