GB1342421A - Information storage and retrieval systems - Google Patents
Information storage and retrieval systemsInfo
- Publication number
- GB1342421A GB1342421A GB139171A GB139171A GB1342421A GB 1342421 A GB1342421 A GB 1342421A GB 139171 A GB139171 A GB 139171A GB 139171 A GB139171 A GB 139171A GB 1342421 A GB1342421 A GB 1342421A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layer
- energy
- frequency
- states
- cut
- 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
- 239000000463 material Substances 0.000 abstract 6
- 230000000694 effects Effects 0.000 abstract 3
- 239000004065 semiconductor Substances 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000010894 electron beam technology Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
- G11C13/04—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam
- G11C13/048—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam using other optical storage elements
-
- 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
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0045—Recording
- G11B7/00454—Recording involving phase-change effects
-
- 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
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/006—Overwriting
- G11B7/0062—Overwriting strategies, e.g. recording pulse sequences with erasing level used for phase-change media
-
- 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
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
- G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
- G11B7/2433—Metals or elements of Groups 13, 14, 15 or 16 of the Periodic Table, e.g. B, Si, Ge, As, Sb, Bi, Se or Te
-
- 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
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
- G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
- G11B2007/24302—Metals or metalloids
- G11B2007/24316—Metals or metalloids group 16 elements (i.e. chalcogenides, Se, Te)
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Optical Recording Or Reproduction (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US1262270A | 1970-02-19 | 1970-02-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1342421A true GB1342421A (en) | 1974-01-03 |
Family
ID=21755858
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB139171A Expired GB1342421A (en) | 1970-02-19 | 1971-01-12 | Information storage and retrieval systems |
Country Status (7)
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2180360A (en) * | 1985-08-06 | 1987-03-25 | Plessey Co Plc | Optical resonant assembly |
Families Citing this family (41)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3986022A (en) * | 1973-06-04 | 1976-10-12 | Gilbert Peter Hyatt | Illumination control system |
US5398041A (en) * | 1970-12-28 | 1995-03-14 | Hyatt; Gilbert P. | Colored liquid crystal display having cooling |
US5432526A (en) * | 1970-12-28 | 1995-07-11 | Hyatt; Gilbert P. | Liquid crystal display having conductive cooling |
US4739396C1 (en) * | 1970-12-28 | 2002-07-09 | Gilbert P Hyatt | Projection display system |
US4672457A (en) * | 1970-12-28 | 1987-06-09 | Hyatt Gilbert P | Scanner system |
US4471385A (en) * | 1970-12-28 | 1984-09-11 | Hyatt Gilbert P | Electro-optical illumination control system |
DE2304182A1 (de) * | 1972-02-01 | 1973-08-09 | Erik Gerhard Natana Westerberg | Vorrichtung zum lichtelektrischen abtasten von datenaufzeichnungstraegern |
NL161284C (nl) * | 1972-09-02 | 1980-01-15 | Philips Nv | Weergavestelsel voor een optisch uitleesbare informatie- structuur, alsmede registratiedrager voor gebruik daarin. |
US4611318A (en) * | 1973-02-20 | 1986-09-09 | Discovision Associates | Method and apparatus for monitoring the storage of information on a storage medium |
CA1013854A (en) * | 1973-02-20 | 1977-07-12 | John S. Winslow | Videodisc mastering system |
US4225873A (en) * | 1978-03-27 | 1980-09-30 | Mca Disco-Vision, Inc. | Recording and playback system |
DE2462514C3 (de) | 1973-02-20 | 1979-10-31 | Mca Disco-Vision, Inc., Universal City, Calif. (V.St.A.) | Vorrichtung zum Lesen von Information auf einer Videoplatte |
US4583210A (en) * | 1973-02-20 | 1986-04-15 | Discovision Associates | Method and apparatus for storing and retrieving information |
US4342906A (en) * | 1973-06-04 | 1982-08-03 | Hyatt Gilbert P | Pulse width modulated feedback arrangement for illumination control |
SE7405076L (sv) * | 1974-04-16 | 1975-10-17 | Erik Gerhard Natanel Westberg | Optiskt massdataminne. |
NL7506495A (nl) * | 1975-06-02 | 1976-12-06 | Philips Nv | Inrichting voor het uitlezen van een registratie- drager. |
US4125860A (en) * | 1975-06-16 | 1978-11-14 | Nippon Telegraph And Telephone Public Corporation | Reproducer for an eraseable videodisc |
US4410968A (en) * | 1977-03-24 | 1983-10-18 | Thomas Lee Siwecki | Method and apparatus for recording on a disk supported deformable metallic film |
NL187413C (nl) * | 1978-03-16 | 1991-09-16 | Philips Nv | Registratiedragerlichaam, ingeschreven registratiedrager, werkwijze voor het inschrijven van het registratiedragerlichaam en inrichting voor het uitvoeren van de werkwijze en voor het uitlezen van een ingeschreven registratiedrager. |
US4456914A (en) * | 1978-03-27 | 1984-06-26 | Discovision Associates | Method and apparatus for storing information on a storage medium |
GB2040539B (en) * | 1978-12-27 | 1983-01-26 | Hitachi Ltd | Optical information recording apparatus |
US4264986A (en) * | 1979-03-12 | 1981-04-28 | Willis Craig I | Information-recording process & apparatus |
US4496957A (en) * | 1979-07-02 | 1985-01-29 | Xerox Corporation | Optical disk |
DE3118058A1 (de) * | 1980-05-14 | 1982-03-11 | RCA Corp., 10020 New York, N.Y. | Aufzeichnungstraeger und verfahren zum schreiben einer informationsspur sowie zum loeschen einer in dem traeger gespeicherten information |
JPS5819744A (ja) * | 1981-07-24 | 1983-02-04 | Sony Corp | 光学式記録再生装置 |
US4545111A (en) * | 1983-01-18 | 1985-10-08 | Energy Conversion Devices, Inc. | Method for making, parallel preprogramming or field programming of electronic matrix arrays |
JPS6089840A (ja) * | 1983-10-22 | 1985-05-20 | Olympus Optical Co Ltd | 自動焦点引込み装置 |
US4638335A (en) * | 1983-12-29 | 1987-01-20 | Xerox Corporation | Optical recording member |
FR2584223B1 (fr) * | 1985-06-28 | 1994-06-17 | Thomson Alcatel Gigadisc | Memoire optique a suivi de piste echantillonne pour support d'information pregrave. |
DE3524184A1 (de) * | 1985-07-05 | 1987-01-15 | Max Planck Gesellschaft | Optisch lesbarer aufzeichnungstraeger |
US4744055A (en) * | 1985-07-08 | 1988-05-10 | Energy Conversion Devices, Inc. | Erasure means and data storage system incorporating improved erasure means |
EP0766239B1 (en) * | 1985-07-08 | 2000-12-27 | Energy Conversion Devices, Inc. | A data storage device |
US4803660A (en) * | 1986-02-28 | 1989-02-07 | Kabushiki Kaisha Toshiba | Optical recording medium |
US4806952A (en) * | 1986-07-04 | 1989-02-21 | Hitachi, Ltd. | Information recording apparatus for recording/reproducing information by irradiating an information recording medium with an energy beam |
US4760567A (en) * | 1986-08-11 | 1988-07-26 | Electron Beam Memories | Electron beam memory system with ultra-compact, high current density electron gun |
US4754446A (en) * | 1987-01-23 | 1988-06-28 | General Electric Company | Optical recording system using refracted write beam for erasing |
US4908815A (en) * | 1988-02-22 | 1990-03-13 | Gregg David P | Optical recording system utilizing proportional real-time feedback control of recording beam intensity |
JPH0249225A (ja) * | 1988-05-27 | 1990-02-19 | Canon Inc | 光学的情報記録再生装置 |
JP3076412B2 (ja) * | 1991-07-24 | 2000-08-14 | 松下電器産業株式会社 | 光学的情報記録媒体および光学的情報記録再生方法 |
US5606541A (en) * | 1992-11-13 | 1997-02-25 | International Business Machines Corporation | Switchable filter for modulating laser intensity and reducing laser feedback in an optical disk device |
US6441940B1 (en) * | 1998-10-09 | 2002-08-27 | Agere Systems Guardian Corp. | Wavelength stabilization of light emitting components |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3174140A (en) * | 1959-07-01 | 1965-03-16 | Ibm | Magneto-optical recording and readout device |
US3185026A (en) * | 1961-05-22 | 1965-05-25 | Ncr Co | Method and apparatus employing metachromatic material for forming a plurality of individual micro-images |
US3253497A (en) * | 1961-10-30 | 1966-05-31 | Polacoat Inc | Information storage device |
US3365706A (en) * | 1964-04-15 | 1968-01-23 | Gilbert W. King | Photo-optical data storage and retrieval system employing error detection and error location identification components |
US3452332A (en) * | 1965-01-05 | 1969-06-24 | Ibm | Memory device and method of information handling utilizing charge transfer between rare earth ions |
US3466616A (en) * | 1965-10-22 | 1969-09-09 | Ibm | Memory device and method using dichroic defects |
US3475736A (en) * | 1965-12-23 | 1969-10-28 | Bell Telephone Labor Inc | Lamellate optically responsive memory arrangement |
US3440621A (en) * | 1966-02-11 | 1969-04-22 | Carson Lab Inc | Color center information storage and retrieval system |
US3506929A (en) * | 1967-02-13 | 1970-04-14 | Bell Telephone Labor Inc | Litao3 electro-optic modulator |
US3530441A (en) * | 1969-01-15 | 1970-09-22 | Energy Conversion Devices Inc | Method and apparatus for storing and retrieving information |
-
1970
- 1970-02-19 US US12622A patent/US3696344A/en not_active Expired - Lifetime
-
1971
- 1971-01-08 CA CA102272A patent/CA924810A/en not_active Expired
- 1971-01-12 GB GB139171A patent/GB1342421A/en not_active Expired
- 1971-01-18 DE DE2102215A patent/DE2102215C2/de not_active Expired
- 1971-02-02 NL NL7101355A patent/NL7101355A/xx unknown
- 1971-02-09 FR FR7104261A patent/FR2080607B1/fr not_active Expired
- 1971-02-19 JP JP748071A patent/JPS549008B1/ja active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2180360A (en) * | 1985-08-06 | 1987-03-25 | Plessey Co Plc | Optical resonant assembly |
US4834511A (en) * | 1985-08-06 | 1989-05-30 | Plessey Overseas Limited | Optical resonant assembly |
GB2180360B (en) * | 1985-08-06 | 1989-11-22 | Plessey Co Plc | Optical resonant assembly |
Also Published As
Publication number | Publication date |
---|---|
FR2080607A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1971-11-19 |
FR2080607B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1976-04-16 |
CA924810A (en) | 1973-04-17 |
NL7101355A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1971-08-23 |
US3696344A (en) | 1972-10-03 |
DE2102215A1 (de) | 1971-08-26 |
JPS549008B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1979-04-20 |
DE2102215C2 (de) | 1982-09-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PE20 | Patent expired after termination of 20 years |