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US3292148A
Expired / Lapsed
US
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Character recognition apparatus using two-dimensional density functions
Assignee: Arthur D Little Inc
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Filing: 1961-05-08
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Granted: 1966-12-13
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Expires: 1981-05-08
Abstract
No abstract record available.
Inventors
- 👤 Vincent E Giuliano
- 👤 Jr Paul E Jones
- 👤 George E Kimball
- 👤 Richard F Meyer
- 👤 Barry A Stein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:53
CPC Classifications
G; G06; G06V; G06V10/00; G06V10/20; G06V10/32; G06V10/30; G06V10/34; G06V10/40; G06V10/42; G06V10/70; G06V10/74; G06V10/75; G06V10/88
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
AN APPARATUS FOR IDENTIFYING INFORMATION-BEARING INDICIA, THE IMAGE OF WHICH CAN BE REPRESENTED AS A TWO-DIMENSIONAL DENSITY FUNCTION PI(X,Y), COMPRISING IN COMBINATION (A) A SET OF SELECTIVE ENERGY ATTENUATING SYSTEMS WHICH WEIGHT SAID IMAGE ACCORDING TO A SET OF TWO-DIMENSIONAL, CONTINUOUSLY VARYING DISCRIMINANT DENSITY FUNCTIONS PDI(X,Y), INDEPENDENT OF PI(X,Y), AT LEAST ONE OF WHICH IS NONCONSTANT IN AT LEAST ONE DIMENSION; (B) MEANS FOR DIRECTING AN ENERGY MANIFESTATION IMAGE OF SAID INDICA PI(X,Y) THROUGH SAID SELECTIVE ENERGY ATTENUATING SYSTEM SO AS TO OBTAIN A SET OF PRODUCT IMAGES PI(X,Y)PDI(X,Y) OF SAID DENSITY FUNCTION; (C) MEANS FOR DETECTING A PROPORTIONAL FRACTION OF THE TOTAL ENERGIES TRANSMITTED THROUGH EACH OF SAID SYS-
Claim 2
Independent Claim
110 words
AN APPARATUS FOR IDENTIFYING INFORMATION-BEARING INDICIA, THE IMAGE OF WHICH CAN BE REPRESENTED AS A TWO-DIMENSIONAL DENSITY FUNCTION PI(X,Y), COMPRISING IN COMBINATION (A) A SET OF SELECTIVE ENERGY ATTENUATING SYSTEMS WHICH WEIGHT SAID IMAGE ACCORDING TO A SET OF TWO-DIMENSIONAL, CONTINUOUSLY VARYING DISCRIMINANT DENSITY FUNCTIONS PDI(X,Y), INDEPENDENT OF PI(X,Y), AT LEAST ONE OF WHICH IS NONCONSTANT IN AT LEAST ONE DIMENSION; (B) MEANS FOR DIRECTING AN ENERGY MANIFESTATION IMAGE OF SAID INDICA PI(X,Y) THROUGH SAID SELECTIVE ENERGY ATTENUATING SYSTEM SO AS TO OBTAIN A SET OF PRODUCT IMAGES PI(X,Y)PDI(X,Y) OF SAID DENSITY FUNCTION; (C) MEANS FOR DETECTING A PROPORTIONAL FRACTION OF THE TOTAL ENERGIES TRANSMITTED THROUGH EACH OF SAID SYS-
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) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |