JPH0475579B2 - - Google Patents
Info
- Publication number
- JPH0475579B2 JPH0475579B2 JP59115709A JP11570984A JPH0475579B2 JP H0475579 B2 JPH0475579 B2 JP H0475579B2 JP 59115709 A JP59115709 A JP 59115709A JP 11570984 A JP11570984 A JP 11570984A JP H0475579 B2 JPH0475579 B2 JP H0475579B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- tracking error
- error signal
- level
- 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 - Lifetime
Links
- 238000001514 detection method Methods 0.000 claims description 29
- 230000003321 amplification Effects 0.000 claims description 17
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 17
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 10
- 230000004044 response Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000003708 edge detection Methods 0.000 description 7
- 230000001133 acceleration Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- 230000009191 jumping Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/094—Methods and circuits for servo offset compensation
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
Landscapes
- Moving Of The Head To Find And Align With The Track (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11570984A JPS60258737A (ja) | 1984-06-06 | 1984-06-06 | トラツキングサ−ボシステムの信号切換回路 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11570984A JPS60258737A (ja) | 1984-06-06 | 1984-06-06 | トラツキングサ−ボシステムの信号切換回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS60258737A JPS60258737A (ja) | 1985-12-20 |
JPH0475579B2 true JPH0475579B2 (pt) | 1992-12-01 |
Family
ID=14669255
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11570984A Granted JPS60258737A (ja) | 1984-06-06 | 1984-06-06 | トラツキングサ−ボシステムの信号切換回路 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60258737A (pt) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5220546A (en) * | 1990-09-28 | 1993-06-15 | International Business Machines Corporation | Operating optical disk drives including calibrating a tracking error signal |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5938973A (ja) * | 1982-08-28 | 1984-03-03 | Sony Corp | デイスク再生装置 |
-
1984
- 1984-06-06 JP JP11570984A patent/JPS60258737A/ja active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5938973A (ja) * | 1982-08-28 | 1984-03-03 | Sony Corp | デイスク再生装置 |
Also Published As
Publication number | Publication date |
---|---|
JPS60258737A (ja) | 1985-12-20 |
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