GB9121947D0 - Compact discs - Google Patents
Compact discsInfo
- Publication number
- GB9121947D0 GB9121947D0 GB919121947A GB9121947A GB9121947D0 GB 9121947 D0 GB9121947 D0 GB 9121947D0 GB 919121947 A GB919121947 A GB 919121947A GB 9121947 A GB9121947 A GB 9121947A GB 9121947 D0 GB9121947 D0 GB 9121947D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- compact discs
- discs
- compact
- 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.)
- Withdrawn
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
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
-
- 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
- G11B7/0055—Erasing
- G11B7/00555—Erasing involving liquid crystal 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
- G11B7/244—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 organic materials only
- G11B7/25—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 organic materials only containing liquid crystals
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB909022585A GB9022585D0 (en) | 1990-10-17 | 1990-10-17 | Compact discs |
Publications (2)
Publication Number | Publication Date |
---|---|
GB9121947D0 true GB9121947D0 (en) | 1991-11-27 |
GB2248963A GB2248963A (en) | 1992-04-22 |
Family
ID=10683887
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB909022585A Pending GB9022585D0 (en) | 1990-10-17 | 1990-10-17 | Compact discs |
GB9121947A Withdrawn GB2248963A (en) | 1990-10-17 | 1991-10-16 | Compact discs |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB909022585A Pending GB9022585D0 (en) | 1990-10-17 | 1990-10-17 | Compact discs |
Country Status (1)
Country | Link |
---|---|
GB (2) | GB9022585D0 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0651381A1 (en) * | 1993-10-28 | 1995-05-03 | Akzo Nobel N.V. | Optical storage medium and method of storing information |
EP0651382A1 (en) * | 1993-11-02 | 1995-05-03 | Akzo Nobel N.V. | Optical storage medium |
AU1464295A (en) * | 1994-01-27 | 1995-08-15 | University Court Of The University Of Dundee, The | Process of producing a data-storage unit |
DE4431823A1 (en) * | 1994-09-07 | 1996-03-14 | Bayer Ag | Process for enhancing information in photoaddressable side chain polymers |
JP4074719B2 (en) * | 1999-01-08 | 2008-04-09 | 大日本印刷株式会社 | Information recording medium |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1018101B (en) * | 1985-08-07 | 1992-09-02 | 株式会社半导体能源研究所 | Nonvolatille optical disc memory with liquid crystal |
US4832456A (en) * | 1986-03-04 | 1989-05-23 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal disc memory with circular grooves for auto-focusing of write-in beam |
US4853911A (en) * | 1986-06-13 | 1989-08-01 | Semiconductor Energy Laboratory Co., Ltd. | Optical disc memory system utilizing a smectic chiral liquid crystal |
GB8615527D0 (en) * | 1986-06-25 | 1986-07-30 | Secr Defence | Liquid crystal polymers |
JPH02123532A (en) * | 1988-11-01 | 1990-05-11 | Canon Inc | Optical disk |
JPH0660695B2 (en) * | 1990-04-17 | 1994-08-10 | エスエムシー株式会社 | valve |
-
1990
- 1990-10-17 GB GB909022585A patent/GB9022585D0/en active Pending
-
1991
- 1991-10-16 GB GB9121947A patent/GB2248963A/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
GB2248963A (en) | 1992-04-22 |
GB9022585D0 (en) | 1990-11-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |