DK146106C - Apparat med et centreringsdetektorsystem til aflaesning med en optisk aflaeselig informationsstruktur - Google Patents
Apparat med et centreringsdetektorsystem til aflaesning med en optisk aflaeselig informationsstrukturInfo
- Publication number
- DK146106C DK146106C DK30777A DK30777A DK146106C DK 146106 C DK146106 C DK 146106C DK 30777 A DK30777 A DK 30777A DK 30777 A DK30777 A DK 30777A DK 146106 C DK146106 C DK 146106C
- Authority
- DK
- Denmark
- Prior art keywords
- reading
- detector system
- readable information
- information structure
- optically readable
- Prior art date
Links
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
- G11B7/0901—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 for track following only
- G11B7/0906—Differential phase difference systems
-
- 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
- G11B11/10502—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 characterised by the transducing operation to be executed
- G11B11/1053—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 characterised by the transducing operation to be executed to compensate for the magnetic domain drift or time shift
-
- 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
- G11B11/10532—Heads
-
- 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
-
- 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
- G11B7/0946—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 specially adapted for operation during external perturbations not related to the carrier or servo beam, e.g. vibration
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/7605—Television signal recording on discs or drums
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Optical Recording Or Reproduction (AREA)
- Holo Graphy (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NLAANVRAGE7600842,A NL182258C (nl) | 1976-01-28 | 1976-01-28 | Inrichting voor het uitlezen van een vlakke registratiedrager met een optisch uitleesbare informatiestructuur. |
| NL7600842 | 1976-01-28 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK30777A DK30777A (da) | 1977-07-29 |
| DK146106B DK146106B (da) | 1983-06-27 |
| DK146106C true DK146106C (da) | 1983-11-21 |
Family
ID=19825526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK30777A DK146106C (da) | 1976-01-28 | 1977-01-25 | Apparat med et centreringsdetektorsystem til aflaesning med en optisk aflaeselig informationsstruktur |
Country Status (21)
| Country | Link |
|---|---|
| JP (1) | JPS5293222A (xx) |
| AR (1) | AR211720A1 (xx) |
| AT (1) | AT349231B (xx) |
| AU (1) | AU505466B2 (xx) |
| BE (1) | BE850781A (xx) |
| BR (1) | BR7700452A (xx) |
| CA (1) | CA1094684A (xx) |
| CH (1) | CH613797A5 (xx) |
| DE (1) | DE2701539C2 (xx) |
| DK (1) | DK146106C (xx) |
| ES (1) | ES455360A1 (xx) |
| FR (1) | FR2339928A1 (xx) |
| GB (1) | GB1534381A (xx) |
| IT (1) | IT1074335B (xx) |
| MX (1) | MX143161A (xx) |
| NL (1) | NL182258C (xx) |
| NO (1) | NO149188C (xx) |
| NZ (1) | NZ183152A (xx) |
| PL (1) | PL107679B1 (xx) |
| SE (2) | SE408238B (xx) |
| ZA (1) | ZA7711B (xx) |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6038771B2 (ja) * | 1978-06-19 | 1985-09-03 | パイオニア株式会社 | 光学式情報読取装置のサ−ボ装置 |
| JPS573236A (en) * | 1980-06-10 | 1982-01-08 | Olympus Optical Co Ltd | Optical information reader |
| JPS57111837A (en) * | 1980-12-27 | 1982-07-12 | Olympus Optical Co Ltd | Signal detecting system of optical information reader |
| NL8204555A (nl) * | 1981-11-25 | 1983-06-16 | Hitachi Ltd | Inrichting voor het registreren en weergeven van informatie. |
| JPS5891538A (ja) * | 1981-11-25 | 1983-05-31 | Hitachi Ltd | 光デイスクトラツク追跡装置 |
| NL8105346A (xx) * | 1981-11-26 | 1983-06-16 | ||
| NL8105347A (nl) * | 1981-11-26 | 1983-06-16 | Philips Nv | Inrichting voor het optisch aftasten van een schijfvormige registratiedrager. |
| JPS58125242A (ja) * | 1982-01-22 | 1983-07-26 | Victor Co Of Japan Ltd | 光学的情報信号再生装置のトラツキング誤差検出方式 |
| JPS58150145A (ja) * | 1982-03-03 | 1983-09-06 | Toshiba Corp | 光学式デジタルデイスクプレ−ヤのトラツキング制御回路 |
| JPS58208944A (ja) * | 1982-05-31 | 1983-12-05 | Sony Corp | 光学ヘツド制御信号発生装置 |
| JPS5922242A (ja) * | 1982-07-26 | 1984-02-04 | Foster Denki Kk | 情報再生装置における光学系制御信号検出回路 |
| JPS59110045A (ja) * | 1982-12-13 | 1984-06-25 | Sanyo Electric Co Ltd | 光学式ピツクアツプ装置 |
| JPS59191144A (ja) * | 1983-04-14 | 1984-10-30 | Sony Corp | 光ピツクアツプのトラツキングサ−ボ回路 |
| JPS59198540A (ja) * | 1983-04-26 | 1984-11-10 | Asahi Optical Co Ltd | 光学式デイスクプレ−ヤのトラツキングサ−ボ回路 |
| US4740940A (en) * | 1985-03-11 | 1988-04-26 | Matsushita Electric Industrial Co., Ltd. | Optical information read apparatus |
| JPS61248237A (ja) * | 1985-04-25 | 1986-11-05 | Sankyo Seiki Mfg Co Ltd | トラツキング誤差信号検出方法 |
| JP2796592B2 (ja) * | 1985-10-17 | 1998-09-10 | セイコーインスツルメンツ株式会社 | トラツキングエラー信号発生回路 |
| JP2824573B2 (ja) * | 1985-11-08 | 1998-11-11 | セイコーインスツルメンツ株式会社 | トラツキングエラー信号発生回路 |
| JP2906144B2 (ja) * | 1986-04-09 | 1999-06-14 | セイコーインスツルメンツ株式会社 | 光学ヘツド制御装置 |
| 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 |
| CN1278312C (zh) * | 1994-06-07 | 2006-10-04 | 松下电器产业株式会社 | 光学信息记录方法及光学信息再现设备 |
| TW364992B (en) * | 1996-04-25 | 1999-07-21 | Toshiba Corp | Optic data regeneration apparatus and control method thereof |
| DE19723542A1 (de) | 1997-06-05 | 1998-12-10 | Thomson Brandt Gmbh | Gerät zum Lesen und/oder Beschreiben optischer Aufzeichnungsträger |
| JP3544847B2 (ja) | 1998-01-16 | 2004-07-21 | 三菱電機株式会社 | 光学的情報再生方法および装置 |
| CN101536096B (zh) | 2006-11-16 | 2011-11-16 | 松下电器产业株式会社 | 用于光学信息再现装置的跟踪装置 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3381086A (en) * | 1962-08-16 | 1968-04-30 | Minnesota Mining & Mfg | Reproduction of television signals from photographic disc recordings |
| FR2235354A1 (en) * | 1973-06-29 | 1975-01-24 | Thomson Csf | Photoelectric optical test sensor - measures displacement of a diffraction screen with constant spacing in the test sensor plane |
-
1976
- 1976-01-28 NL NLAANVRAGE7600842,A patent/NL182258C/xx not_active IP Right Cessation
-
1977
- 1977-01-03 ZA ZA00770011A patent/ZA7711B/xx unknown
- 1977-01-15 DE DE2701539A patent/DE2701539C2/de not_active Expired
- 1977-01-24 MX MX167802A patent/MX143161A/es unknown
- 1977-01-25 CH CH89377A patent/CH613797A5/xx not_active IP Right Cessation
- 1977-01-25 GB GB2943/77A patent/GB1534381A/en not_active Expired
- 1977-01-25 DK DK30777A patent/DK146106C/da not_active IP Right Cessation
- 1977-01-25 IT IT19598/77A patent/IT1074335B/it active
- 1977-01-25 AU AU21616/77A patent/AU505466B2/en not_active Expired
- 1977-01-25 NZ NZ183152A patent/NZ183152A/xx unknown
- 1977-01-25 SE SE7700725A patent/SE408238B/xx not_active IP Right Cessation
- 1977-01-25 BR BR7700452A patent/BR7700452A/pt unknown
- 1977-01-25 PL PL1977195541A patent/PL107679B1/pl unknown
- 1977-01-25 SE SE7700725D patent/SE7700725L/xx not_active Application Discontinuation
- 1977-01-25 NO NO770240A patent/NO149188C/no unknown
- 1977-01-26 BE BE174406A patent/BE850781A/xx unknown
- 1977-01-26 JP JP686777A patent/JPS5293222A/ja active Granted
- 1977-01-26 ES ES455360A patent/ES455360A1/es not_active Expired
- 1977-01-26 CA CA270,465A patent/CA1094684A/en not_active Expired
- 1977-01-26 AT AT46077A patent/AT349231B/de not_active IP Right Cessation
- 1977-01-27 AR AR266331A patent/AR211720A1/es active
- 1977-01-27 FR FR7702258A patent/FR2339928A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| SE7700725L (sv) | 1977-07-29 |
| CH613797A5 (en) | 1979-10-15 |
| ATA46077A (de) | 1978-08-15 |
| NL182258C (nl) | 1988-02-01 |
| JPS5630610B2 (xx) | 1981-07-16 |
| NL7600842A (nl) | 1977-08-01 |
| BE850781A (fr) | 1977-07-26 |
| NZ183152A (en) | 1980-04-28 |
| JPS5293222A (en) | 1977-08-05 |
| MX143161A (es) | 1981-03-26 |
| DE2701539A1 (de) | 1977-08-04 |
| FR2339928B1 (xx) | 1980-03-21 |
| NO770240L (no) | 1977-07-29 |
| NL182258B (nl) | 1987-09-01 |
| SE408238B (sv) | 1979-05-21 |
| DK146106B (da) | 1983-06-27 |
| GB1534381A (en) | 1978-12-06 |
| AR211720A1 (es) | 1978-02-28 |
| DE2701539C2 (de) | 1981-11-12 |
| AT349231B (de) | 1979-03-26 |
| PL107679B1 (pl) | 1980-02-29 |
| IT1074335B (it) | 1985-04-20 |
| ZA7711B (en) | 1978-08-30 |
| AU505466B2 (en) | 1979-11-22 |
| CA1094684A (en) | 1981-01-27 |
| AU2161677A (en) | 1978-08-03 |
| BR7700452A (pt) | 1977-10-04 |
| ES455360A1 (es) | 1978-01-01 |
| NO149188C (no) | 1984-02-29 |
| NO149188B (no) | 1983-11-21 |
| FR2339928A1 (fr) | 1977-08-26 |
| DK30777A (da) | 1977-07-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PBP | Patent lapsed |