DE3887906D1 - Plattenförmiger aufzeichnungsträger. - Google Patents
Plattenförmiger aufzeichnungsträger.Info
- Publication number
- DE3887906D1 DE3887906D1 DE88907357T DE3887906T DE3887906D1 DE 3887906 D1 DE3887906 D1 DE 3887906D1 DE 88907357 T DE88907357 T DE 88907357T DE 3887906 T DE3887906 T DE 3887906T DE 3887906 D1 DE3887906 D1 DE 3887906D1
- Authority
- DE
- Germany
- Prior art keywords
- recording
- disk
- data
- region
- recording medium
- 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 - Fee Related
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/24—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by sensing features on the record carrier other than the transducing track ; sensing signals or marks recorded by another method than the main recording
-
- 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/1055—Disposition or mounting of transducers relative to record carriers
- G11B11/10556—Disposition or mounting of transducers relative to record carriers with provision for moving or switching or masking the transducers in or out of their operative position
- G11B11/10563—Access of indexed parts
- G11B11/10565—Marks for track change, e.g. prepits, gray codes
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/1055—Disposition or mounting of transducers relative to record carriers
- G11B11/10576—Disposition or mounting of transducers relative to record carriers with provision for moving the transducers for maintaining alignment or spacing relative to the carrier
- G11B11/10578—Servo format, e.g. prepits, guide tracks, pilot signals
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
- G11B11/10584—Record carriers characterised by the selection of the material or by the structure or form characterised by the form, e.g. comprising mechanical protection elements
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
- G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
- G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
-
- 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
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
- G11B7/00745—Sectoring or header formats within a track
-
- 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
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
- G11B7/013—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track for discrete information, i.e. where each information unit is stored in a distinct discrete location, e.g. digital information formats within a data block or sector
-
- 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
- G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
-
- 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
- G11B7/0938—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 servo format, e.g. guide tracks, pilot signals
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
- G11B2220/215—Recordable discs
- G11B2220/218—Write-once discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2525—Magneto-optical [MO] discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
- G11B2220/2545—CDs
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/913—Material designed to be responsive to temperature, light, moisture
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
- Y10S430/146—Laser beam
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
- Y10T428/24917—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including metal layer
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Optical Recording Or Reproduction (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20754287 | 1987-08-21 | ||
JP62322958A JP2653073B2 (ja) | 1987-08-21 | 1987-12-22 | ディスク状記録媒体 |
PCT/JP1988/000826 WO1989001686A1 (en) | 1987-08-21 | 1988-08-19 | Disk-like recording medium and disk apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3887906D1 true DE3887906D1 (de) | 1994-03-24 |
DE3887906T2 DE3887906T2 (de) | 1994-09-01 |
Family
ID=26516313
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3887906T Expired - Fee Related DE3887906T2 (de) | 1987-08-21 | 1988-08-19 | Plattenförmiger aufzeichnungsträger. |
Country Status (6)
Country | Link |
---|---|
US (1) | US4925717A (de) |
EP (1) | EP0436018B1 (de) |
JP (1) | JP2653073B2 (de) |
KR (1) | KR960015205B1 (de) |
DE (1) | DE3887906T2 (de) |
WO (1) | WO1989001686A1 (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01243253A (ja) * | 1988-03-24 | 1989-09-27 | Matsushita Electric Ind Co Ltd | 記録担体 |
JPH02130727A (ja) * | 1988-11-10 | 1990-05-18 | Sony Corp | ディスク状記録媒体 |
JPH02172021A (ja) * | 1988-12-26 | 1990-07-03 | Toshiba Corp | 光ディスク |
JP2796344B2 (ja) * | 1989-04-12 | 1998-09-10 | 株式会社日立製作所 | 光学的情報記録媒体および記録再生装置 |
JP2798982B2 (ja) * | 1989-06-29 | 1998-09-17 | 株式会社東芝 | 光ディスク装置 |
JP2753048B2 (ja) * | 1989-06-21 | 1998-05-18 | 株式会社東芝 | 光ディスク装置 |
US5189290A (en) * | 1989-10-14 | 1993-02-23 | Omron Corporation | Optical card processing apparatus using tracking error signals to determine proper card orientation |
JPH03288337A (ja) * | 1990-04-04 | 1991-12-18 | Matsushita Electric Ind Co Ltd | 光ディスクドライブ装置 |
JP2594374B2 (ja) * | 1990-05-29 | 1997-03-26 | 松下電送株式会社 | トラックカウント方法 |
US5327408A (en) * | 1990-09-07 | 1994-07-05 | International Business Machines Corporation | Optical disk with sector servo patterns compensating for variations in pattern size and/or radial velocity |
JP2959588B2 (ja) * | 1991-02-14 | 1999-10-06 | ソニー株式会社 | 光磁気ディスク及びそのセクタ管理情報の記録方法ならびに再生方法 |
JP3243800B2 (ja) * | 1991-06-07 | 2002-01-07 | ソニー株式会社 | 光ディスク媒体のグレーコードの形成方法及びトラックアドレス再生装置 |
KR950014671B1 (ko) * | 1992-12-31 | 1995-12-13 | 현대전자산업주식회사 | 광 정보기록재생장치, 매체 및 기록재생방법 |
TWI223243B (en) * | 2002-07-25 | 2004-11-01 | Acer Labs Inc | Optical disk system which records data onto optical disk at a constant angular velocity |
US9841931B2 (en) * | 2014-03-31 | 2017-12-12 | Vmware, Inc. | Systems and methods of disk storage allocation for virtual machines |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7314267A (nl) * | 1973-10-17 | 1975-04-21 | Philips Nv | Registratiedrager waarop informatie is aangebracht in een optisch uitleesbare struktuur. |
US4443870A (en) * | 1981-10-15 | 1984-04-17 | Burroughs Corporation | Optical memory system providing track following |
US4428075A (en) * | 1981-12-21 | 1984-01-24 | Burroughs Corporation | Methods of preformatting an optical disk |
FR2523347B1 (fr) * | 1982-03-12 | 1988-11-04 | Thomson Csf | Support d'information mobile pregrave et dispositif optique de suivi de piste mettant en oeuvre un tel support |
JPS58211346A (ja) * | 1982-05-31 | 1983-12-08 | Kureha Chem Ind Co Ltd | 光磁気記録デイスク |
JP2702907B2 (ja) * | 1985-06-19 | 1998-01-26 | 株式会社日立製作所 | 情報記録媒体及びその記録再生装置 |
ATE84631T1 (de) * | 1985-07-30 | 1993-01-15 | Philips Nv | Generatorkreis fuer spursignal und aufzeichnungstraeger dafuer. |
FR2597248B1 (fr) * | 1985-11-27 | 1988-05-13 | Thomson Alcatel Gigadisc | Support d'information a pregravure et son dispositif d'exploration optiques a acces echantillonne |
DE3789808T2 (de) * | 1986-08-25 | 1994-08-18 | Sony Corp | Plattenanordnung und plattenähnliches speichermedium. |
-
1987
- 1987-12-22 JP JP62322958A patent/JP2653073B2/ja not_active Expired - Fee Related
-
1988
- 1988-08-19 US US07/348,486 patent/US4925717A/en not_active Expired - Lifetime
- 1988-08-19 EP EP88907357A patent/EP0436018B1/de not_active Expired - Lifetime
- 1988-08-19 WO PCT/JP1988/000826 patent/WO1989001686A1/ja active IP Right Grant
- 1988-08-19 DE DE3887906T patent/DE3887906T2/de not_active Expired - Fee Related
- 1988-08-19 KR KR1019890700685A patent/KR960015205B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0436018B1 (de) | 1994-02-16 |
EP0436018A1 (de) | 1991-07-10 |
DE3887906T2 (de) | 1994-09-01 |
US4925717A (en) | 1990-05-15 |
KR890702188A (ko) | 1989-12-23 |
KR960015205B1 (ko) | 1996-11-01 |
JP2653073B2 (ja) | 1997-09-10 |
JPH01138621A (ja) | 1989-05-31 |
EP0436018A4 (en) | 1991-11-13 |
WO1989001686A1 (en) | 1989-02-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3887906D1 (de) | Plattenförmiger aufzeichnungsträger. | |
DE69131086D1 (de) | Gerät zum Aufzeichnen und Wiedergeben von optischen Platten | |
DE3750409D1 (de) | Optische Platte und Plattengerät zum Aufzeichnen oder Wiedergeben von Daten in oder von der Platte. | |
EP0278006A4 (en) | A disc device and a disc-like recording medium | |
DE3272099D1 (en) | Optical data recording and reproducing apparatus | |
IT1210875B (it) | Apparato per la registrazione e la lettura di piste di informazione in un supporto a disco, di itpo ottico. | |
KR0129764B1 (ko) | 디스크상 기록매체 | |
EP0422227A4 (en) | Optical disc recording/reproducing apparatus | |
JPS6163930A (ja) | 円盤状記録担体及び円盤状記録担体のアドレス信号再生装置 | |
DE59104275D1 (de) | Verfahren und gerät zur aufzeichnung und/oder wiedergabe von digitalen daten auf einem aufzeichnungsträger und aufzeichnungsträger. | |
DE69231731D1 (de) | Verfahren zur aufzeichnung auf eine scheibe | |
DK135182A (da) | Fremgangsmaade til registrering af spormarkeringsinformation paa fleksible magnetiske informationsbaerende plader og apparat til finjustering af et laesehoveds placering | |
JPH03187040A (ja) | 光磁気ディスク読取り装置及び光磁気ディスクから信号を検出する方法 | |
ES8700776A1 (es) | Un aparato de control de seguimiento para grabar y-o repro- ducir senales en un disco rotatorio | |
DE69229238T2 (de) | Verfahren zur Aufzeichnung von Sektorkontrollinformation auf eine magneto-optischen Scheibe | |
KR100195557B1 (en) | Optical disk and movement control of its optical spot | |
JPS57172552A (en) | Reproducing method for stored information | |
DE3673147D1 (de) | Plattenwiedergabegeraet. | |
ES8505487A1 (es) | Un metodo de registrar informacion en forma de una pista de areas magnetizadas, en un soporte de registro magnetico-optico | |
GB1387304A (en) | Information carrier of disc form for sound and/or video signals | |
JPH0432026A (ja) | データ記録再生装置 | |
JPS6425320A (en) | Optical disk high density recording and reproducing system | |
JPS6376124A (ja) | 光情報記録デイスク | |
GB2121654A (en) | Track identification code recording method | |
JPS5733464A (en) | Disk-type information recording carrier |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8328 | Change in the person/name/address of the agent |
Free format text: PATENTANWAELTE MUELLER & HOFFMANN, 81667 MUENCHEN |
|
8339 | Ceased/non-payment of the annual fee |