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Patent US3145367A successfully refreshed from Google Patents.
US3145367A
Expired / Lapsed
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Character recognition circuit
Assignee: SRI International Inc
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Filing: 1959-07-27
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Granted: 1964-08-18
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Expires: 1979-07-27
Abstract
No abstract record available.
Inventors
- 👤 Hewitt D Crane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:30
CPC Classifications
G; G06; G06V; G06V10/00; G06V10/10; G06V10/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A SYSTEM FOR RECOGNIZING A CHARACTER BEING WRITTEN BY A WRITING INSTRUMENT ON A WRITING MEDIUM COMPRISING A PLURALITY OF SIGNAL-GENERATING MEANS, MEANS FOR ENERGIZING A SEPARATE ONE OF SAID SIGNAL-GENERATING MEANS FOR EACH DIFFERENT DIRECTION MOVED BY SAID WRITING INSTRUMENT WHILE WRITING A CHARACTER TO ESTABLISH A UNIQUE ENERGIZATION SEQUENCE OF SAID SIGNAL-GENERATING MEANS FOR EACH CHARACTER, A DIFFERENT RECOGNITION MEANS FOR EACH CHARACTER FOR PROVIDING A RECOGNITION SIGNAL RESPONSIVE TO RECEIVING THE OUTPUTS OF THE SIGNAL GENERATORS ENERGIZED IN THE UNIQUE SEQUENCE FOR EACH SAID CHARACTER, AND MEANS FOR APPLYING TO THE RECOGNITION MEANS FOR EACH CHARACTER THE OUTPUTS OF THE SIGNAL GENERATORS UNIQUELY ENERGIZED WHEN SAID CHARACTER IS WRITTEN.
Claim 2
Independent Claim
112 words
A SYSTEM FOR RECOGNIZING A CHARACTER BEING WRITTEN BY A WRITING INSTRUMENT ON A WRITING MEDIUM COMPRISING A PLURALITY OF SIGNAL-GENERATING MEANS, MEANS FOR ENERGIZING A SEPARATE ONE OF SAID SIGNAL-GENERATING MEANS FOR EACH DIFFERENT DIRECTION MOVED BY SAID WRITING INSTRUMENT WHILE WRITING A CHARACTER TO ESTABLISH A UNIQUE ENERGIZATION SEQUENCE OF SAID SIGNAL-GENERATING MEANS FOR EACH CHARACTER, A DIFFERENT RECOGNITION MEANS FOR EACH CHARACTER FOR PROVIDING A RECOGNITION SIGNAL RESPONSIVE TO RECEIVING THE OUTPUTS OF THE SIGNAL GENERATORS ENERGIZED IN THE UNIQUE SEQUENCE FOR EACH SAID CHARACTER, AND MEANS FOR APPLYING TO THE RECOGNITION MEANS FOR EACH CHARACTER THE OUTPUTS OF THE SIGNAL GENERATORS UNIQUELY ENERGIZED WHEN SAID CHARACTER IS WRITTEN.
References Cited (Backward Citations)
US2446392A
Cited
US2992408A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |