JPS61500877A - 磁気記録媒体及びその追跡装置と方法 - Google Patents
磁気記録媒体及びその追跡装置と方法Info
- Publication number
- JPS61500877A JPS61500877A JP50021584A JP50021584A JPS61500877A JP S61500877 A JPS61500877 A JP S61500877A JP 50021584 A JP50021584 A JP 50021584A JP 50021584 A JP50021584 A JP 50021584A JP S61500877 A JPS61500877 A JP S61500877A
- Authority
- JP
- Japan
- Prior art keywords
- recording medium
- guideline
- light
- read
- optical
- 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
- 238000000034 method Methods 0.000 title claims description 10
- 230000003287 optical effect Effects 0.000 claims description 45
- 239000000835 fiber Substances 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 10
- 239000000758 substrate Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 239000013307 optical fiber Substances 0.000 claims description 6
- 230000004044 response Effects 0.000 claims description 6
- 238000005286 illumination Methods 0.000 claims description 5
- 239000000696 magnetic material Substances 0.000 claims description 3
- 238000012937 correction Methods 0.000 claims description 2
- 210000003128 head Anatomy 0.000 description 44
- 239000004020 conductor Substances 0.000 description 9
- 239000010410 layer Substances 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 241000257465 Echinoidea Species 0.000 description 1
- 241000287227 Fringillidae Species 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- COCAUCFPFHUGAA-MGNBDDOMSA-N n-[3-[(1s,7s)-5-amino-4-thia-6-azabicyclo[5.1.0]oct-5-en-7-yl]-4-fluorophenyl]-5-chloropyridine-2-carboxamide Chemical compound C=1C=C(F)C([C@@]23N=C(SCC[C@@H]2C3)N)=CC=1NC(=O)C1=CC=C(Cl)C=N1 COCAUCFPFHUGAA-MGNBDDOMSA-N 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 210000001747 pupil Anatomy 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B13/00—Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for
- G11B13/04—Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for magnetically or by magnetisation and optically or by radiation, for changing or sensing optical properties
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/38—Visual features other than those contained in record tracks or represented by sprocket holes the visual signals being auxiliary signals
- G11B23/42—Marks for indexing, speed-controlling, synchronising, or timing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B5/596—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
- G11B5/59677—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks with optical servo tracking
Landscapes
- Moving Of The Head To Find And Align With The Track (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US56612483A | 1983-12-27 | 1983-12-27 | |
US566124 | 1983-12-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61500877A true JPS61500877A (ja) | 1986-05-01 |
Family
ID=24261593
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50021584A Pending JPS61500877A (ja) | 1983-12-27 | 1984-12-19 | 磁気記録媒体及びその追跡装置と方法 |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0167570A1 (zh) |
JP (1) | JPS61500877A (zh) |
WO (1) | WO1985002933A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02154317A (ja) * | 1988-12-07 | 1990-06-13 | Hitachi Ltd | 磁気記録装置 |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4816939A (en) * | 1986-08-21 | 1989-03-28 | Polaroid Corporation | Magnetic recording media and servo systems using light-transmitting optical gratings |
US4843494A (en) * | 1987-10-15 | 1989-06-27 | Polaroid Corporation | Data storage apparatus using optical servo tracks |
US5101385A (en) * | 1988-03-14 | 1992-03-31 | Bernoulli Optical Systems Company | Magneto-optical information storage system for flexible media having maximum overwrite efficiency |
GB2216710B (en) * | 1988-03-14 | 1992-09-02 | Ici Plc | Optical or magneto-optical data system |
US4958245A (en) * | 1988-04-07 | 1990-09-18 | Insite Peripherals, Inc. | Apparatus and method for optical servo control with media having information storage and servo control regions of different reflectivities |
US4961123A (en) * | 1988-06-03 | 1990-10-02 | Insite Peripherals | Magnetic information media storage with optical servo tracks |
JPH02257481A (ja) * | 1988-07-21 | 1990-10-18 | Insite Peripherals Inc | ディスク駆動機構用ヘッド |
US5208706A (en) * | 1988-10-24 | 1993-05-04 | Lemelson Jerome H | Magnetic reproduction apparatus and method |
CN1075024A (zh) * | 1992-01-29 | 1993-08-04 | 松下电器产业株式会社 | 录放装置 |
US5473584A (en) * | 1992-01-29 | 1995-12-05 | Matsushita Electric Industrial Co., Ltd. | Recording and reproducing apparatus |
US5526328A (en) * | 1992-01-29 | 1996-06-11 | Matsushita Electric Industrial Co., Ltd. | Recording and reproducing apparatus with varying amounts of data in different tracks |
USRE40957E1 (en) | 1992-01-29 | 2009-11-10 | Panasonic Corporation | Medium, apparatus, and method related to encryption resultant information |
US5682360A (en) * | 1992-01-29 | 1997-10-28 | Matsushita Electric Industrial Co., Ltd. | Recording and reproducing apparatus for use with a recording medium having an optical recording layer and magnetic recording layer |
JP3275404B2 (ja) * | 1992-03-31 | 2002-04-15 | 三菱化学株式会社 | 情報記録媒体および情報記録装置 |
DE4220486A1 (de) * | 1992-06-23 | 1994-01-05 | Thomson Brandt Gmbh | Aufzeichnung und Wiedergabe von Informationen bei ROM-RAM-Speichermedien |
WO1994011867A1 (en) * | 1992-11-06 | 1994-05-26 | Mitsubishi Kasei Corporation | Magnetic recording medium, its recording/reproducing method and information processor which uses the medium and method |
GB9224003D0 (en) * | 1992-11-16 | 1993-01-06 | Minnesota Mining & Mfg | Magnetic recording materials |
EP0833319A3 (en) * | 1993-01-21 | 2002-04-03 | Matsushita Electric Industrial Co., Ltd. | Disc-shaped recording medium |
TW550551B (en) * | 2000-07-28 | 2003-09-01 | Koninkl Philips Electronics Nv | Magnetic scanning system |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2315142A1 (fr) * | 1975-06-17 | 1977-01-14 | Pyral Soc | Procede de guidage d'une tete d'enregistrement et/ou de lecture d'un support magnetique |
DE2615838C2 (de) * | 1976-04-10 | 1985-02-07 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Vorrichtung zur Positionsregelung eines Schreib-Lesekopfes für Datenträger mit einer Magnetspeicherschicht |
JPS52136611A (en) * | 1976-05-11 | 1977-11-15 | Fujitsu Ltd | Magnetic head device |
JPS546510A (en) * | 1977-06-17 | 1979-01-18 | Fujitsu Ltd | Self-servo system of magnetic discs |
JPS5841577B2 (ja) * | 1977-11-24 | 1983-09-13 | 富士通株式会社 | 磁気ヘッドの光学的位置決め装置 |
JPS54130004A (en) * | 1978-03-31 | 1979-10-09 | Fujitsu Ltd | Cylinder position detecting method of magnetic disc apparatus |
JPS558604A (en) * | 1978-06-30 | 1980-01-22 | Fujitsu Ltd | Servo system in rotary magnetic recording medium |
JPS5622266A (en) * | 1979-07-30 | 1981-03-02 | Fujitsu Ltd | Flexible magnetic disc unit |
JPS56111169A (en) * | 1980-02-04 | 1981-09-02 | Fujitsu Ltd | Track servo system of magnetic disc device |
-
1984
- 1984-12-19 WO PCT/US1984/002085 patent/WO1985002933A1/en not_active Application Discontinuation
- 1984-12-19 JP JP50021584A patent/JPS61500877A/ja active Pending
- 1984-12-19 EP EP85900434A patent/EP0167570A1/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02154317A (ja) * | 1988-12-07 | 1990-06-13 | Hitachi Ltd | 磁気記録装置 |
Also Published As
Publication number | Publication date |
---|---|
WO1985002933A1 (en) | 1985-07-04 |
EP0167570A1 (en) | 1986-01-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS61500877A (ja) | 磁気記録媒体及びその追跡装置と方法 | |
US4730293A (en) | Dual beam optical data system | |
EP0745255B1 (en) | Multilayer record carrier and device for scanning said carrier | |
EP0414380B1 (en) | Optical recording and reproducing apparatus and adaptor for use with said apparatus | |
US5959280A (en) | Multi-standard optical disk reading apparatus and method of reading using same | |
JPH01500625A (ja) | 磁気記録媒体とこれを用いるサーボ装置 | |
US6747257B1 (en) | Monolithic optical pickup and an assembly including the pickup with laser source(s) and optical detector(s) | |
EP0286297B1 (en) | Information recording method and apparatus | |
JPS58501793A (ja) | 光学ディスクを事前に構成するための装置 | |
EP0749119A2 (en) | Optical pickup apparatus | |
CA2002381A1 (en) | Optical pickup device | |
JPH0512768B2 (zh) | ||
EP0776002A3 (en) | Integrated optical pickup system capable of reading optical disks of different thicknesses | |
US6115336A (en) | Apparatus for optically recording data into a disc | |
CN101093685A (zh) | 光拾取器以及使用该光拾取器的光记录/重放设备 | |
KR950002395B1 (ko) | 광정보 처리장치용 트랙억세스장치 및 그 억세스방법 | |
CA1294705C (en) | Optical information recording medium and recording-reproducing apparatus | |
US6578164B1 (en) | Method for detecting transient write errors in a disk drive having a dual transducer slider | |
EP1829029B1 (en) | Labeling methods and apparatus using energy of two wavelengths | |
US7728859B2 (en) | Optical printhead | |
JP3031655B2 (ja) | 記録済信号検出装置 | |
JP2755633B2 (ja) | レーザ光制御装置 | |
US6836451B1 (en) | Lensless optical servo system for an optically assisted disk drive | |
JPH0765394A (ja) | 光ディスク装置 | |
JPH07169178A (ja) | カード状光学的記録媒体 |