BE810857A - Systeme de memoire - Google Patents
Systeme de memoireInfo
- Publication number
- BE810857A BE810857A BE140764A BE140764A BE810857A BE 810857 A BE810857 A BE 810857A BE 140764 A BE140764 A BE 140764A BE 140764 A BE140764 A BE 140764A BE 810857 A BE810857 A BE 810857A
- Authority
- BE
- Belgium
- Prior art keywords
- memory system
- memory
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/38—Visual features other than those contained in record tracks or represented by sprocket holes the visual signals being auxiliary signals
- G11B23/40—Identifying or analogous means applied to or incorporated in the record carrier and not intended for visual display simultaneously with the playing-back of the record carrier, e.g. label, leader, photograph
-
- 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
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0901—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following only
- G11B7/0903—Multi-beam tracking systems
-
- 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
- G11C13/06—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 magneto-optical elements
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7301929A NL7301929A (ja) | 1973-02-12 | 1973-02-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
BE810857A true BE810857A (fr) | 1974-08-12 |
Family
ID=19818183
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE140764A BE810857A (fr) | 1973-02-12 | 1974-02-11 | Systeme de memoire |
Country Status (9)
Country | Link |
---|---|
US (1) | US3899780A (ja) |
JP (1) | JPS5444180B2 (ja) |
BE (1) | BE810857A (ja) |
CA (1) | CA1017056A (ja) |
DE (1) | DE2403093A1 (ja) |
FR (1) | FR2217770B1 (ja) |
GB (1) | GB1450966A (ja) |
NL (1) | NL7301929A (ja) |
SE (1) | SE397599B (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4581717A (en) * | 1981-03-26 | 1986-04-08 | Sony Corporation | Thermomagnetic recording method |
WO1984003991A1 (en) * | 1983-03-31 | 1984-10-11 | Sony Corp | Thermomagnetic optical recording method |
US4558383A (en) * | 1983-06-30 | 1985-12-10 | International Business Machines Corporation | Information storage disk transducer position control system using a prerecorded servo pattern requiring no alignment with the storage disk |
US4893910A (en) * | 1988-03-16 | 1990-01-16 | Hewlett-Packard Company | Magneto-optical recording system having medium with domainless control layer |
US5208706A (en) * | 1988-10-24 | 1993-05-04 | Lemelson Jerome H | Magnetic reproduction apparatus and method |
US6118632A (en) * | 1997-02-12 | 2000-09-12 | International Business Machines Corporation | Magnetic disk stack having laser-bump identifiers on magnetic disks |
US6278419B1 (en) | 1997-06-26 | 2001-08-21 | Light Spin Ltd. | Moving display |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3631415A (en) * | 1969-09-12 | 1971-12-28 | Honeywell Inc | Optical mass memory |
US3742471A (en) * | 1971-02-24 | 1973-06-26 | Hitachi Ltd | Bubble domain apparatus |
US3731290A (en) * | 1971-07-15 | 1973-05-01 | Honeywell Inc | Optical mass memory |
US3810131A (en) * | 1972-07-18 | 1974-05-07 | Bell Telephone Labor Inc | Devices employing the interaction of laser light with magnetic domains |
-
1973
- 1973-02-12 NL NL7301929A patent/NL7301929A/xx unknown
-
1974
- 1974-01-23 DE DE2403093A patent/DE2403093A1/de not_active Ceased
- 1974-01-25 GB GB353274A patent/GB1450966A/en not_active Expired
- 1974-01-30 US US437975A patent/US3899780A/en not_active Expired - Lifetime
- 1974-02-08 SE SE7401694A patent/SE397599B/xx unknown
- 1974-02-08 CA CA192,095A patent/CA1017056A/en not_active Expired
- 1974-02-11 FR FR7404460A patent/FR2217770B1/fr not_active Expired
- 1974-02-11 BE BE140764A patent/BE810857A/xx unknown
- 1974-02-12 JP JP1708474A patent/JPS5444180B2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
SE397599B (sv) | 1977-11-07 |
DE2403093A1 (de) | 1974-08-15 |
FR2217770A1 (ja) | 1974-09-06 |
GB1450966A (en) | 1976-09-29 |
US3899780A (en) | 1975-08-12 |
NL7301929A (ja) | 1974-08-14 |
CA1017056A (en) | 1977-09-06 |
FR2217770B1 (ja) | 1981-09-04 |
JPS5444180B2 (ja) | 1979-12-24 |
JPS49114330A (ja) | 1974-10-31 |
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