GB2155684B - Optically readable storage disc - Google Patents

Optically readable storage disc

Info

Publication number: GB2155684B
Authority: GB; United Kingdom
Prior art keywords: readable storage; optically readable; storage disc; disc; optically
Prior art date: 1984-02-14
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

Application number

GB08503678A

Other versions

GB2155684A (en

GB8503678D0 (en

Inventor

Leonardus Petrus Joh Hoogeveen

Hendrikus Wilhelmus Co Peeters

Aloysius Michael Josep Spruijt

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Koninklijke Philips NV

Original Assignee

Philips Gloeilampenfabrieken NV

Priority date (The priority date 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 date listed.)

1984-02-14

Filing date

1985-02-13

Publication date

1988-11-02

1985-02-13 Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV

1985-03-13 Publication of GB8503678D0 publication Critical patent/GB8503678D0/en

1985-09-25 Publication of GB2155684A publication Critical patent/GB2155684A/en

1988-11-02 Application granted granted Critical

1988-11-02 Publication of GB2155684B publication Critical patent/GB2155684B/en

Status Expired legal-status Critical Current

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
- G11B7/24097—Structures for detection, control, recording operation or replay operation; Special shapes or structures for centering or eccentricity prevention; Arrangements for testing, inspecting or evaluating; Containers, cartridges or cassettes
- 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
- G11B7/24015—Air-sandwiched discs

GB08503678A 1984-02-14 1985-02-13 Optically readable storage disc Expired GB2155684B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL8400476A NL8400476A (en)	1984-02-14	1984-02-14	OPTICALLY READABLE MEMORY DRIVE.

Publications (3)

Publication Number	Publication Date
GB8503678D0 GB8503678D0 (en)	1985-03-13
GB2155684A GB2155684A (en)	1985-09-25
GB2155684B true GB2155684B (en)	1988-11-02

Family

ID=19843488

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB08503678A Expired GB2155684B (en)	1984-02-14	1985-02-13	Optically readable storage disc

Country Status (11)

Country	Link
JP (1)	JPS60140235U (en)
BE (1)	BE901719A (en)
CA (1)	CA1241744A (en)
DD (1)	DD228381A5 (en)
DE (1)	DE3505015A1 (en)
ES (1)	ES8606710A1 (en)
FR (1)	FR2559607A1 (en)
GB (1)	GB2155684B (en)
IT (1)	IT1183232B (en)
NL (1)	NL8400476A (en)
SU (1)	SU1487826A3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2343784B (en) *	1998-11-16	2001-08-01	Leung Ching Yuen	Irregular optical disc
US20020136155A1 (en) *	2001-03-06	2002-09-26	Chieh-Ho Chen	CD safe to hold

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE203656C (en) *
DE190908C (en) *
GB335768A (en) *	1929-10-24	1930-10-02	Jacoviac Maurice	Improvements in protecting devices for gramophone disc records
DE883811C (en) *	1951-06-08	1953-07-20	Hermann Geiselhart	Ring made of rubber as plate protection
US4331966A (en) *	1980-10-06	1982-05-25	Storage Technology Corporation	Information storage device and method of forming same
JPS5774842A (en) *	1980-10-24	1982-05-11	Mitsubishi Electric Corp	Optical information recording disk
US4376963A (en) *	1980-12-19	1983-03-15	International Business Machines Corporation	Composite magnetic recording disk
JPS57150155A (en) *	1981-03-09	1982-09-16	Matsushita Electric Ind Co Ltd	Magnetooptic disc
JPS57172542A (en) *	1981-04-15	1982-10-23	Toshiba Corp	Information storage medium
JPS57172541A (en) *	1981-04-15	1982-10-23	Toshiba Corp	Information storage medium
FR2528216B1 (en) *	1982-06-08	1988-01-08	Thomson Csf	PROTECTED OPTICAL DISC WITH FREE LAYER
JPS5987636A (en) *	1982-11-10	1984-05-21	Toshiba Corp	Information storage medium

1984
- 1984-02-14 NL NL8400476A patent/NL8400476A/en not_active Application Discontinuation
1985
- 1985-02-07 CA CA000473768A patent/CA1241744A/en not_active Expired
- 1985-02-11 ES ES540285A patent/ES8606710A1/en not_active Expired
- 1985-02-11 IT IT19458/85A patent/IT1183232B/en active
- 1985-02-12 DD DD85273212A patent/DD228381A5/en unknown
- 1985-02-12 BE BE0/214507A patent/BE901719A/en not_active IP Right Cessation
- 1985-02-12 FR FR8501934A patent/FR2559607A1/en active Pending
- 1985-02-13 GB GB08503678A patent/GB2155684B/en not_active Expired
- 1985-02-13 JP JP1985017893U patent/JPS60140235U/en active Pending
- 1985-02-13 SU SU853862706A patent/SU1487826A3/en active
- 1985-02-14 DE DE19853505015 patent/DE3505015A1/en not_active Withdrawn

Also Published As

Publication number	Publication date
IT1183232B (en)	1987-10-15
IT8519458A0 (en)	1985-02-11
CA1241744A (en)	1988-09-06
FR2559607A1 (en)	1985-08-16
ES8606710A1 (en)	1986-04-01
GB2155684A (en)	1985-09-25
BE901719A (en)	1985-08-12
SU1487826A3 (en)	1989-06-15
NL8400476A (en)	1985-09-02
DD228381A5 (en)	1985-10-09
DE3505015A1 (en)	1985-08-14
ES540285A0 (en)	1986-04-01
JPS60140235U (en)	1985-09-17
GB8503678D0 (en)	1985-03-13

Legal Events

Date	Code	Title	Description
1989-10-04	PCNP	Patent ceased through non-payment of renewal fee

Publication	Publication Date	Title
DE3569054D1 (en)	1989-04-27	Optical disk
DE3573349D1 (en)	1989-11-02	Disc case
EP0174651A3 (en)	1987-12-09	Disc cartridge
AU544929B2 (en)	1985-06-20	Optically readable information disc
EP0167167A3 (en)	1988-03-30	Disc case
GB8510299D0 (en)	1985-05-30	Clutch disc
SG129792G (en)	1993-06-11	Optical disc
GB8503679D0 (en)	1985-03-13	Optically readable storage disc
GB8502428D0 (en)	1985-03-06	Clutch disc
DE3479359D1 (en)	1989-09-14	Optically readable storage disc
GB2154701B (en)	1987-02-04	Clutch disc
GB2159299B (en)	1987-09-30	Optical discs
GB8501433D0 (en)	1985-02-20	Clutch disc
GB2158192B (en)	1987-04-08	Clutch disc
GB2156041B (en)	1987-06-10	Clutch disc
GB2156040B (en)	1987-05-07	Clutch disc
EP0213307A3 (en)	1988-09-07	Optical disc
GB2161314B (en)	1987-12-23	Disk cartridge
GB8411509D0 (en)	1984-06-13	Optical disc
GB2161978B (en)	1988-12-14	Disk cartridge
EP0240696A3 (en)	1990-03-21	Optical storage medium
EP0158359A3 (en)	1987-09-16	Disc case
DE3462293D1 (en)	1987-03-05	Optically readable disc
GB2181263B (en)	1989-09-27	Optical storage medium
GB8614480D0 (en)	1986-07-16	Optical disc memory