HU896701D0 - Method for thermomagnetic writing information and reading the stored information and information carrying device for them - Google Patents

Method for thermomagnetic writing information and reading the stored information and information carrying device for them

Info

Publication number: HU896701D0
Authority: HU; Hungary
Prior art keywords: information; recording; reading; thermomagnetic; carrying device
Prior art date: 1988-12-24

Application number

HU896701A

Other languages

English (en)

Other versions

HUT55156A (en

Inventor

Franciscous Johannes Greidanus

Peter Francis Carcia

Wouter Bastiaan Zeper

Broeder Friedrich Johannes Den

Willem Fredrik Godlieb

Original Assignee

Philips 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.)

1988-12-24

Filing date

1989-12-20

Publication date

1990-02-28

1989-12-20 Application filed by Philips Nv filed Critical Philips Nv

1990-02-28 Publication of HU896701D0 publication Critical patent/HU896701D0/hu

1991-04-29 Publication of HUT55156A publication Critical patent/HUT55156A/hu

Classifications

- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B13/00—Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for
- G11B13/04—Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for magnetically or by magnetisation and optically or by radiation, for changing or sensing optical properties
- 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
- G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form

Landscapes

Optical Record Carriers And Manufacture Thereof (AREA)
Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)

HU896701A 1988-12-24 1989-12-20 Method for thermomagnetic recording of information and for optical reading HUT55156A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL8803168A NL8803168A (nl)	1988-12-24	1988-12-24	Werkwijze voor het thermomagnetisch registreren van informatie en het optisch uitlezen van de geregistreerde informatie alsmede een registratie-element dat geschikt is voor toepassing in deze werkwijze.

Publications (2)

Publication Number	Publication Date
HU896701D0 true HU896701D0 (en)	1990-02-28
HUT55156A HUT55156A (en)	1991-04-29

Family

ID=19853439

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
HU896701A HUT55156A (en)	1988-12-24	1989-12-20	Method for thermomagnetic recording of information and for optical reading

Country Status (11)

Country	Link
US (1)	US5109375A (hu)
EP (1)	EP0376375B1 (hu)
JP (1)	JPH02263344A (hu)
KR (1)	KR0168626B1 (hu)
AT (1)	ATE120025T1 (hu)
DE (1)	DE68921726T2 (hu)
ES (1)	ES2072291T3 (hu)
HU (1)	HUT55156A (hu)
NL (1)	NL8803168A (hu)
RU (1)	RU2040047C1 (hu)
YU (1)	YU244689A (hu)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5082749A (en) *	1990-03-15	1992-01-21	E. I. Du Pont De Nemours And Company	Platinum or palladium/cobalt multilayer on a zinc oxide or indium oxide layer for magneto-optical recording
US5346740A (en) *	1990-09-25	1994-09-13	Matsushita Electric Industrial Co., Ltd.	Optical information recording medium
JP2903729B2 (ja) *	1990-12-20	1999-06-14	ソニー株式会社	光磁気記録媒体
JPH056820A (ja) *	1990-12-28	1993-01-14	Sony Corp	光磁気記録媒体
EP0498657A3 (en) *	1991-02-08	1993-03-03	Canon Kabushiki Kaisha	Optical recording medium, method of reproducing recorded data of optical recording medium, and system for reproducing recorded data of optical recording medium
US5305300A (en) *	1991-02-13	1994-04-19	Sharp Kabushiki Kaisha	Magneto optical storage device using a multi-layer film of Pt/Co laminated sections
JPH0573990A (ja) *	1991-03-07	1993-03-26	Hitachi Ltd	光記録方法、光記録再生方法、光記録材料及び光記録装置
CA2069056C (en) *	1991-05-23	1996-03-05	Kenji Ohta	Magneto-optical storage device and manufacturing method thereof
JP3029485B2 (ja) *	1991-07-22	2000-04-04	キヤノン株式会社	光磁気記録媒体
JPH05198029A (ja) *	1991-09-03	1993-08-06	Philips Gloeilampenfab:Nv	光磁気記録媒体
GB9216074D0 (en) *	1992-07-28	1992-09-09	Johnson Matthey Plc	Magneto-optical recording materials system
EP0762412A1 (en) *	1995-08-25	1997-03-12	Eastman Kodak Company	Optical storage medium including multiple data levels made of Co/Pt magneto-optical recording media
US6243350B1 (en) *	1996-05-01	2001-06-05	Terastor Corporation	Optical storage systems with flying optical heads for near-field recording and reading
EP1239307A1 (en) *	2001-03-09	2002-09-11	Sicpa Holding S.A.	Magnetic thin film interference device
AT413777B (de) *	2001-03-21	2006-05-15	Clearjet Gmbh	Vorrichtung zur bearbeitung blattförmiger informationsträger
US20020192506A1 (en)	2001-06-04	2002-12-19	International Business Machines Corporation	`Thermal Spring' magnetic recording media for writing using magnetic and thermal gradients

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS61117747A (ja) *	1984-11-12	1986-06-05	Nippon Kogaku Kk <Nikon>	２層膜光磁気記録媒体
US4587176A (en) *	1985-01-14	1986-05-06	E. I. Du Pont De Nemours And Company	Layered coherent structures for magnetic recording
US4731300A (en) *	1985-03-07	1988-03-15	Victor Company Of Japan, Ltd.	Perpendicular magnetic recording medium and manufacturing method thereof
US4635076A (en) *	1985-03-14	1987-01-06	Minnesota Mining And Manufacturing Company	Two-sided optical recording medium
US4678721A (en) *	1986-04-07	1987-07-07	U.S. Philips Corporation	Magnetic recording medium
US4789606A (en) *	1986-04-17	1988-12-06	Fuji Photo Film Co., Ltd.	Magneto-optical recording medium
JPH0782674B2 (ja) *	1986-11-06	1995-09-06	キヤノン株式会社	光磁気メモリ用媒体
DE3727093A1 (de) *	1987-08-14	1989-02-23	Basf Ag	Flaechenfoermiges, mehrschichtiges, laseroptisches aufzeichnungsmaterial
EP0304873B1 (en) *	1987-08-26	1991-11-21	Sony Corporation	Magneto-optical recording medium
JPH01149246A (ja) *	1987-12-04	1989-06-12	Sony Corp	光磁気記録媒体
EP0367685A3 (en) *	1988-10-31	1991-08-07	Eastman Kodak Company	Magnetooptical recording element

1988
- 1988-12-24 NL NL8803168A patent/NL8803168A/nl not_active Application Discontinuation
1989
- 1989-07-24 US US07/384,587 patent/US5109375A/en not_active Expired - Fee Related
- 1989-12-18 ES ES89203214T patent/ES2072291T3/es not_active Expired - Lifetime
- 1989-12-18 DE DE68921726T patent/DE68921726T2/de not_active Expired - Fee Related
- 1989-12-18 EP EP89203214A patent/EP0376375B1/en not_active Expired - Lifetime
- 1989-12-18 AT AT89203214T patent/ATE120025T1/de not_active IP Right Cessation
- 1989-12-20 HU HU896701A patent/HUT55156A/hu unknown
- 1989-12-21 RU SU894742828A patent/RU2040047C1/ru active
- 1989-12-22 KR KR1019890019217A patent/KR0168626B1/ko not_active Expired - Fee Related
- 1989-12-22 JP JP1331397A patent/JPH02263344A/ja active Pending
- 1989-12-25 YU YU02446/89A patent/YU244689A/xx unknown

Also Published As

Publication number	Publication date
ATE120025T1 (de)	1995-04-15
ES2072291T3 (es)	1995-07-16
HUT55156A (en)	1991-04-29
DE68921726T2 (de)	1995-09-14
RU2040047C1 (ru)	1995-07-20
DE68921726D1 (de)	1995-04-20
KR900010695A (ko)	1990-07-09
NL8803168A (nl)	1990-07-16
KR0168626B1 (ko)	1999-03-20
YU244689A (en)	1990-12-31
US5109375A (en)	1992-04-28
EP0376375B1 (en)	1995-03-15
JPH02263344A (ja)	1990-10-26
EP0376375A1 (en)	1990-07-04

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Legal Events

Date	Code	Title	Description
1992-04-28	DFD9	Temporary protection cancelled due to non-payment of fee