CA947867A - Computer memory device - Google Patents

Computer memory device

Info

Publication number: CA947867A
Authority: CA; Canada
Prior art keywords: memory device; computer memory; computer; memory
Prior art date: 1972-05-16
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

CA142,330A

Other languages

English (en)

Other versions

CA142330S (en

Inventor

H. Keith Eastwood

Robert Johannes

Clifford H. Griffiths

Anibal Gavini

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.)

Multi State Devices Ltd

Original Assignee

Multi State Devices Ltd

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.)

1972-05-16

Filing date

1972-05-16

Publication date

1974-05-21

1972-05-16 Application filed by Multi State Devices Ltd filed Critical Multi State Devices Ltd

1972-05-16 Priority to CA142,330A priority Critical patent/CA947867A/en

1973-05-08 Priority to US00358283A priority patent/US3801824A/en

1973-05-15 Priority to FR7317585A priority patent/FR2184883B1/fr

1973-05-16 Priority to JP5449773A priority patent/JPS544602B2/ja

1973-05-16 Priority to DE2324778A priority patent/DE2324778C3/de

1973-05-23 Priority to GB2459273A priority patent/GB1386221A/en

1974-05-21 Application granted granted Critical

1974-05-21 Publication of CA947867A publication Critical patent/CA947867A/en

Status Expired legal-status Critical Current

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
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0055—Erasing
- G11B7/00557—Erasing involving 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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam

Landscapes

Physics & Mathematics (AREA)
Optics & Photonics (AREA)
Optical Recording Or Reproduction (AREA)
Optical Record Carriers And Manufacture Thereof (AREA)
Thermal Transfer Or Thermal Recording In General (AREA)

CA142,330A 1972-05-16 1972-05-16 Computer memory device Expired CA947867A (en)

Priority Applications (6)

Application Number	Priority Date	Filing Date	Title
CA142,330A CA947867A (en)	1972-05-16	1972-05-16	Computer memory device
US00358283A US3801824A (en)	1972-05-16	1973-05-08	Computer memory device
FR7317585A FR2184883B1 (de)	1972-05-16	1973-05-15
JP5449773A JPS544602B2 (de)	1972-05-16	1973-05-16
DE2324778A DE2324778C3 (de)	1972-05-16	1973-05-16	Optische Speichereinrichtung
GB2459273A GB1386221A (en)	1972-05-16	1973-05-23	Computer memory device

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA142,330A CA947867A (en)	1972-05-16	1972-05-16	Computer memory device

Publications (1)

Publication Number	Publication Date
CA947867A true CA947867A (en)	1974-05-21

Family

ID=4093285

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA142,330A Expired CA947867A (en)	1972-05-16	1972-05-16	Computer memory device

Country Status (6)

Country	Link
US (1)	US3801824A (de)
JP (1)	JPS544602B2 (de)
CA (1)	CA947867A (de)
DE (1)	DE2324778C3 (de)
FR (1)	FR2184883B1 (de)
GB (1)	GB1386221A (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2266932B1 (de) *	1973-03-02	1977-09-02	Thomson Brandt
JPS526504A (en) *	1975-07-04	1977-01-19	Teac Co	Disc record peproducing device
US4198657A (en) *	1975-07-07	1980-04-15	Pioneer Electronic Corporation	Optical disk reader with means for correcting errors due to eccentricity and time axis variations
JPS56118726A (en) *	1980-02-25	1981-09-17	Daisho Kogyo Kk	Static mixer
FR2514913B1 (fr) *	1981-10-16	1986-07-04	Bull Sa	Dispositif opto-electronique de lecture d'informations contenues sur un support magnetique
US4703408A (en) *	1983-11-28	1987-10-27	Hitachi, Ltd.	Apparatus and record carrier for optically writing information
US5077725A (en) *	1988-07-08	1991-12-31	Sharp Kabushiki Kaisha	Optical memory device and apparatus for manufacturing the same
US7939743B2 (en) *	2005-09-14	2011-05-10	Micro-Star International Co., Ltd.	Computer with thermoelectric conversion
US7995878B2 (en) *	2007-08-16	2011-08-09	The Regents Of The Univeristy Of Michigan	Integrated optical memory

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3509348A (en) *	1967-09-18	1970-04-28	Bell Telephone Labor Inc	Optical memory device utilizing metal semiconductor phase transition materials
US3550096A (en) *	1968-05-31	1970-12-22	Rca Corp	Photochromic memory in which memory location is selectively heated during write cycle
US3623795A (en) *	1970-04-24	1971-11-30	Rca Corp	Electro-optical system
US3636526A (en) *	1970-06-08	1972-01-18	Energy Conversion Devices Inc	Information-recording system employing amorphous materials
US3737877A (en) *	1970-09-24	1973-06-05	Energy Conversion Devices Inc	Data storage system with coarse and fine directing means

1972
- 1972-05-16 CA CA142,330A patent/CA947867A/en not_active Expired
1973
- 1973-05-08 US US00358283A patent/US3801824A/en not_active Expired - Lifetime
- 1973-05-15 FR FR7317585A patent/FR2184883B1/fr not_active Expired
- 1973-05-16 DE DE2324778A patent/DE2324778C3/de not_active Expired
- 1973-05-16 JP JP5449773A patent/JPS544602B2/ja not_active Expired
- 1973-05-23 GB GB2459273A patent/GB1386221A/en not_active Expired

Also Published As

Publication number	Publication date
FR2184883A1 (de)	1973-12-28
GB1386221A (en)	1975-03-05
DE2324778A1 (de)	1973-11-29
JPS4970547A (de)	1974-07-08
US3801824A (en)	1974-04-02
JPS544602B2 (de)	1979-03-08
FR2184883B1 (de)	1976-11-12
DE2324778C3 (de)	1978-03-30
DE2324778B2 (de)	1977-08-04

Publication	Publication Date	Title
CA928854A (en)	1973-06-19	Memory device
AU465721B2 (en)	1975-10-02	Data storage device
CA957082A (en)	1974-10-29	Computer monitoring device
CA979644A (en)	1975-12-16	Trail-grooming device
CA1001315A (en)	1976-12-07	Memory access device
CA1023857A (en)	1978-01-03	Three-dimensionally-addressed memory
CA1010678A (en)	1977-05-24	Enthalpy-calculating device
CA947867A (en)	1974-05-21	Computer memory device
CA980898A (en)	1975-12-30	Data processor
CA998460A (en)	1976-10-12	Light-intensifying device
JPS547255A (en)	1979-01-19	Computer
CA998568A (en)	1976-10-19	Seed-dispensing device
CA1026868A (en)	1978-02-21	Memory write circuit
CA979645A (en)	1975-12-16	Trail-grooming device
CA986223A (en)	1976-03-23	Memory device
CA1019445A (en)	1977-10-18	Organic memory device
CA907740A (en)	1972-08-15	Metal-nitride-semiconductor memory
CA893920A (en)	1972-02-22	Field effect memory device
CA915310A (en)	1972-11-21	Memory system
CA913227A (en)	1972-10-24	Data sensing device
AU5135773A (en)	1974-07-25	Memory devices
CA835575A (en)	1970-02-24	Nondestructive-readout memory device
CA890090A (en)	1972-01-04	Data processor
CA907743A (en)	1972-08-15	Comparison device
CA988991A (en)	1976-05-11	Thermographic development device