US3160853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Character recognition apparatus
Assignee: International Business Machines Corp
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Filing: 1959-12-21
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Granted: 1964-12-08
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Expires: 1979-12-21
Abstract
No abstract record available.
Inventors
- 👤 Philip H Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:41
CPC Classifications
G; G06; G06V; G06V10/00; G06V10/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
CHARACTER RECOGNITION APPARATUS COMPRISING MULTICHANNEL SCANNING MEANS FOR SCANNING CHARACTERS AND PRODUCING A SCANNING SIGNAL IN RESPONSE THERETO, QUANTIZING MEANS FOR EACH OF SAID CHANNELS FOR DETERMINING WHETHER SUCCESSIVE INCREMENTS OF SAID SCANNING SIGNAL ARE INDICATIVE OF SCANNED CHARACTER-FORMING MEANS, AND MEANS RESPONSIVE TO SAID QUANTIZING MEANS FOR IDENTIFYING A CHARACTER SCANNED, EACH OF SAID QUANTIZING MEANS INCLUDING MEANS FOR FILTERING FROM SAID SCANNING SIGNAL FREQUENCIES ABOVE A PREDETERMINED UPPER CUT-OFF VALUE, INTEGRATING AND CLIPPING MEANS RESPONSIVE TO SAID FILTERED SIGNAL FOR PRODUCING A FIRST OUTPUT SIGNAL WHEN AND ONLY WHEN THE AMPLITUDE-TIME INTEGRAL OF SAID FILTERED SIGNAL EXCEEDS A PREDETERMINED AMPLITUDE, MEANS RESPONSIVE TO BEGINNING AND ENDING PORTIONS OF SAID FILTERED SIGNAL FOR PRODUCING A DELAYED SECOND OUTPUT SIGNAL INDICATIVE OF THE DURATION OF SAID SIGNAL, AND MEANS RESPONSIVE TO SAID FIRST AND SAID
Claim 2
Dependent Claim
135 words
CHARACTER RECOGNITION APPARATUS COMPRISING MULTICHANNEL SCANNING MEANS FOR SCANNING CHARACTERS AND PRODUCING A SCANNING SIGNAL IN RESPONSE THERETO, QUANTIZING MEANS FOR EACH OF SAID CHANNELS FOR DETERMINING WHETHER SUCCESSIVE INCREMENTS OF SAID SCANNING SIGNAL ARE INDICATIVE OF SCANNED CHARACTER-FORMING MEANS, AND MEANS RESPONSIVE TO SAID QUANTIZING MEANS FOR IDENTIFYING A CHARACTER SCANNED, EACH OF SAID QUANTIZING MEANS INCLUDING MEANS FOR FILTERING FROM SAID SCANNING SIGNAL FREQUENCIES ABOVE A PREDETERMINED UPPER CUT-OFF VALUE, INTEGRATING AND CLIPPING MEANS RESPONSIVE TO SAID FILTERED SIGNAL FOR PRODUCING A FIRST OUTPUT SIGNAL WHEN AND ONLY WHEN THE AMPLITUDE-TIME INTEGRAL OF SAID FILTERED SIGNAL EXCEEDS A PREDETERMINED AMPLITUDE, MEANS RESPONSIVE TO BEGINNING AND ENDING PORTIONS OF SAID FILTERED SIGNAL FOR PRODUCING A DELAYED SECOND OUTPUT SIGNAL INDICATIVE OF THE DURATION OF SAID SIGNAL, AND MEANS RESPONSIVE TO SAID FIRST AND SAID
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) | 1967-12-08 | 1968-06-08 | 1968-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-08 | 1972-06-08 | 1972-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-08 | 1976-06-08 | 1976-12-08 | $7700.00 | Window Closed / Lapsed |