Patent US3176271A successfully refreshed from Google Patents.
US3176271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recognition system for reading machines
Assignee: Control Data Corp
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Filing: 1961-10-26
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Granted: 1965-03-30
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Expires: 1981-10-26
Abstract
No abstract record available.
Inventors
- 👤 Lyle W Mader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:22
CPC Classifications
G; G06; G06V; G06V10/00; G06V10/70; G06V10/74; G06V10/75; G06V10/751
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
IN A SYSTEM TO IDENTIFY CHARACTERS BY MACHINE WHERE THE CHARACTERS HAVE A CONTRASTING BACKGROUND, MEANS TO EXAMINE THE INDIVIDUAL AREAS OF A CHARACTER AND ITS BACKGROUND AND TO PROVIDE OUTPUTS CORRESPONDING TO THE OPTICAL DENSITY OF EACH AREA, CRITERIA MEANS FOR THE CHARACTERS THAT THE MACHINE IS CAPABLE OF IDENTIFYING, EACH CRITERION MEANS INCLUDING COMPONENTS WHICH CORRESPOND TO SOME FIRST AREAS WHICH AN EXAMINED CHARACTER IS EXPECTED TO OCCUPY AND OTHER SECOND AREAS WHICH THE EXAMINED CHARACTER BACKGROUND IS EXPECTED TO OCCUPY, SAID FIRST AND SECOND COMPONENTS BEING IN A PREDETERMINED RATIO TO EACH OTHER FOR SAID CRITERION MEANS, AND THE CRITERIA MEANS FOR ALL OTHERS OF THE CHARACTERS HAVING COMPONENTS FOR THEIR CHARACTERS AND BACKGROUND AREAS IN SUBSTANTIALLY THE SAME RATIO, AND MEANS TO EFFECT A COMPARISON OF SAID OUTPUTS WITH SAID CRITERIA MEANS.
Claim 2
Dependent Claim
136 words
IN A SYSTEM TO IDENTIFY CHARACTERS BY MACHINE WHERE THE CHARACTERS HAVE A CONTRASTING BACKGROUND, MEANS TO EXAMINE THE INDIVIDUAL AREAS OF A CHARACTER AND ITS BACKGROUND AND TO PROVIDE OUTPUTS CORRESPONDING TO THE OPTICAL DENSITY OF EACH AREA, CRITERIA MEANS FOR THE CHARACTERS THAT THE MACHINE IS CAPABLE OF IDENTIFYING, EACH CRITERION MEANS INCLUDING COMPONENTS WHICH CORRESPOND TO SOME FIRST AREAS WHICH AN EXAMINED CHARACTER IS EXPECTED TO OCCUPY AND OTHER SECOND AREAS WHICH THE EXAMINED CHARACTER BACKGROUND IS EXPECTED TO OCCUPY, SAID FIRST AND SECOND COMPONENTS BEING IN A PREDETERMINED RATIO TO EACH OTHER FOR SAID CRITERION MEANS, AND THE CRITERIA MEANS FOR ALL OTHERS OF THE CHARACTERS HAVING COMPONENTS FOR THEIR CHARACTERS AND BACKGROUND AREAS IN SUBSTANTIALLY THE SAME RATIO, AND MEANS TO EFFECT A COMPARISON OF SAID OUTPUTS WITH SAID CRITERIA MEANS.
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) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |