US3328563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical coincidence readout in information storage and retrieval
Assignee: International Business Machines Corp
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Filing: 1962-12-21
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Granted: 1967-06-27
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Expires: 1982-12-21
Abstract
No abstract record available.
Inventors
- 👤 Ernest P Kollar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:24
CPC Classifications
G; G06; G06K; G06K21/00; G06K21/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
IN AN ANALOG OPTICAL COINCIDENCE INFORMATION RETRIEVAL SYSTEM WHEREIN A PLURALITY OF DOCUMENTS IN STORAGE EACH HAVE A DIFFERENT PREDETERMINED ADDRESS. (A) A STACK OF TRANSLUCENT KEYWORD CARDS OF A POLYESTER MATERIAL HAVING AN OPTICAL DENSITY BETWEEN .02 AND .1 AND EACH REPRESENTING A DIFFERENT KEYWORD RELATING TO INFORMATION TO BE RETRIEVED AND HAVING AT PREDETERMINED COORDINATE LOCATIONS THEREIN PERFORATIONS CORRESPONDING TO THE ADDRESSES OF DOCUMENTS TO WHICH THE KEYWORD PERTAINS, (B) A LIGHT SOURCE DISPOSED ON ONE SIDE OF SAID STACK ARRANGED TO ILLUMINATE SAID ONE SIDE OF SAID STACK UNIFORMLY WITH A BEAM OF SUBSTANTIALLY PARALLEL LIGHT RAYS BETWEEN 700-1100 MILLIMICRONS, (C) MEANS INCLUDING A LIGHT SENSITIVE DEVICE AND INDICATING MEANS FOR SCANNING THE OTHER SIDE OF THE STACK TO ASCERTAIN THE RELATIVE INTENSITY OF THE LIGHT PASSING THROUGH THE STACK AT SAID PREDETERMINED COORDINATE ADDRESS LOCATIONS.
Claim 2
Dependent Claim
139 words
IN AN ANALOG OPTICAL COINCIDENCE INFORMATION RETRIEVAL SYSTEM WHEREIN A PLURALITY OF DOCUMENTS IN STORAGE EACH HAVE A DIFFERENT PREDETERMINED ADDRESS. (A) A STACK OF TRANSLUCENT KEYWORD CARDS OF A POLYESTER MATERIAL HAVING AN OPTICAL DENSITY BETWEEN .02 AND .1 AND EACH REPRESENTING A DIFFERENT KEYWORD RELATING TO INFORMATION TO BE RETRIEVED AND HAVING AT PREDETERMINED COORDINATE LOCATIONS THEREIN PERFORATIONS CORRESPONDING TO THE ADDRESSES OF DOCUMENTS TO WHICH THE KEYWORD PERTAINS, (B) A LIGHT SOURCE DISPOSED ON ONE SIDE OF SAID STACK ARRANGED TO ILLUMINATE SAID ONE SIDE OF SAID STACK UNIFORMLY WITH A BEAM OF SUBSTANTIALLY PARALLEL LIGHT RAYS BETWEEN 700-1100 MILLIMICRONS, (C) MEANS INCLUDING A LIGHT SENSITIVE DEVICE AND INDICATING MEANS FOR SCANNING THE OTHER SIDE OF THE STACK TO ASCERTAIN THE RELATIVE INTENSITY OF THE LIGHT PASSING THROUGH THE STACK AT SAID PREDETERMINED COORDINATE ADDRESS LOCATIONS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |