DE1932840B2 - Datenspeichersystem - Google Patents
DatenspeichersystemInfo
- Publication number
- DE1932840B2 DE1932840B2 DE19691932840 DE1932840A DE1932840B2 DE 1932840 B2 DE1932840 B2 DE 1932840B2 DE 19691932840 DE19691932840 DE 19691932840 DE 1932840 A DE1932840 A DE 1932840A DE 1932840 B2 DE1932840 B2 DE 1932840B2
- Authority
- DE
- Germany
- Prior art keywords
- reading
- beams
- data storage
- storage system
- absorbed
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
- G06F11/0751—Error or fault detection not based on redundancy
-
- 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
- G11C13/048—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 other optical storage elements
Description
Claims (1)
- Patentanspruch:Datenspeichersystem, bei dem als Speichermedium eine Aufzeichnungssubstanz vorgesehen ist, die sich unter dem Einfluß energiereichcr Laserstrahlen beim Einschreiben verfärbt, und die zerstörungsfrei mittels Lesestrahlen mit einer anderen Wellenlänge auslesbar ist, dadurch gekennzeichnet, daß beim Auslesen die Aufzeichnungssubslanz gemeinsam mit den Lese-Strahlen zusätzlichen Kontrollstrahlen ausgesetzt wird, die in ihrer Wellenlänge derart gewählt sind, daß sie durch die beim Einschreibvorgang erzeugten Verfärbungen nicht absorbiert werden und daß diejenigen Teile der Aufzeichnungssubstanz, von denen sowohl die Lese- als auch die Kontrollstrahlen absorbiert werden, als gestört angesehen werden,
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19691932840 DE1932840B2 (de) | 1969-06-28 | 1969-06-28 | Datenspeichersystem |
CH924870A CH510925A (de) | 1969-06-28 | 1970-06-19 | Datenspeichervorrichtung |
FR7023421A FR2048012B1 (de) | 1969-06-28 | 1970-06-24 | |
GB3064870A GB1306972A (en) | 1969-06-28 | 1970-06-24 | Data storage system |
US50607A US3638201A (en) | 1969-06-28 | 1970-06-29 | Optical data storage system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19691932840 DE1932840B2 (de) | 1969-06-28 | 1969-06-28 | Datenspeichersystem |
Publications (2)
Publication Number | Publication Date |
---|---|
DE1932840A1 DE1932840A1 (de) | 1971-06-03 |
DE1932840B2 true DE1932840B2 (de) | 1971-12-16 |
Family
ID=5738248
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19691932840 Pending DE1932840B2 (de) | 1969-06-28 | 1969-06-28 | Datenspeichersystem |
Country Status (5)
Country | Link |
---|---|
US (1) | US3638201A (de) |
CH (1) | CH510925A (de) |
DE (1) | DE1932840B2 (de) |
FR (1) | FR2048012B1 (de) |
GB (1) | GB1306972A (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3873813A (en) * | 1973-05-18 | 1975-03-25 | Xerox Corp | Credit card |
US3795805A (en) * | 1973-05-18 | 1974-03-05 | Xerox Corp | Apparatus for testing a credit card |
US3964823A (en) * | 1974-03-18 | 1976-06-22 | Bell Telephone Laboratories, Incorporated | Articles employing photochromic materials |
US4542505A (en) * | 1983-11-14 | 1985-09-17 | Burroughs Corporation | Adjustable system for skew comparison of digital signals |
JPS6421725A (en) * | 1987-07-15 | 1989-01-25 | Mitsubishi Electric Corp | Optical multi-wavelength recording and reproducing device |
US7218596B2 (en) * | 2003-05-12 | 2007-05-15 | Invent Technologies, Llc | Apparatus and method for optical data storage and retrieval |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3387140A (en) * | 1965-06-21 | 1968-06-04 | Sperry Rand Corp | Optical signal correlator using rotary photochromic record means |
US3466616A (en) * | 1965-10-22 | 1969-09-09 | Ibm | Memory device and method using dichroic defects |
US3532426A (en) * | 1967-11-08 | 1970-10-06 | Gen Electric | Holographic fingerprint identification |
-
1969
- 1969-06-28 DE DE19691932840 patent/DE1932840B2/de active Pending
-
1970
- 1970-06-19 CH CH924870A patent/CH510925A/de not_active IP Right Cessation
- 1970-06-24 FR FR7023421A patent/FR2048012B1/fr not_active Expired
- 1970-06-24 GB GB3064870A patent/GB1306972A/en not_active Expired
- 1970-06-29 US US50607A patent/US3638201A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2048012A1 (de) | 1971-03-19 |
US3638201A (en) | 1972-01-25 |
CH510925A (de) | 1971-07-31 |
DE1932840A1 (de) | 1971-06-03 |
FR2048012B1 (de) | 1975-10-10 |
GB1306972A (en) | 1973-02-14 |
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