US3303468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Character recognition system employing a sensing device with a photosensitive surface
Assignee: NCR Voyix Corp
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Filing: 1964-03-02
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Granted: 1967-02-07
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Expires: 1984-03-02
Abstract
No abstract record available.
Inventors
- 👤 Sidney H Liebson
- 👤 Robert W Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:59
CPC Classifications
G; G06; G06V; G06V10/00; G06V10/10; G06V10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A CHARACTER IDENTIFICATION SYSTEM COMPRISING A SOURCE OF DIRECT CURRENT POTENTIAL, A SENSING DEVICE HAVING A PHOTOSENSITIVE SURFACE AREA, MEANS FOR IMAGING THE CHARACTER TO BE IDENTIFIED UPON SAID PHOTOSENSITIVE SURFACE AREA, MEANS FOR SUCCESSIVELY APPLYING SAID SOURCE OF DIRECT CURRENT POTENTIAL ACROSS EACH OF A PLURALITY OF PATHS UPON SAID PHOTOSENSITIVE SURFACE AREA AS DETERMINED BY A PLURALITY OF PAIRS OF SPACED POINTS THEREON WHEREBY POTENTIAL DROPS DEPENDENT ON THE IMAGED CHARACTER ARE SUCCESSIVELY DEVELOPED ACROSS EACH OF SAID PATHS, POTENTIAL-LEVELSENSITIVE CIRCUIT MEANS FOR PRODUCING SIGNAL PULSES TO BE EVALUATED IN RESPONSE TO THE SAID POTENTIAL DROP ACROSS EACH OF SAID PATHS, AND EVALUATING LOGIC CIRCUIT MEANS
Claim 2
Dependent Claim
108 words
A CHARACTER IDENTIFICATION SYSTEM COMPRISING A SOURCE OF DIRECT CURRENT POTENTIAL, A SENSING DEVICE HAVING A PHOTOSENSITIVE SURFACE AREA, MEANS FOR IMAGING THE CHARACTER TO BE IDENTIFIED UPON SAID PHOTOSENSITIVE SURFACE AREA, MEANS FOR SUCCESSIVELY APPLYING SAID SOURCE OF DIRECT CURRENT POTENTIAL ACROSS EACH OF A PLURALITY OF PATHS UPON SAID PHOTOSENSITIVE SURFACE AREA AS DETERMINED BY A PLURALITY OF PAIRS OF SPACED POINTS THEREON WHEREBY POTENTIAL DROPS DEPENDENT ON THE IMAGED CHARACTER ARE SUCCESSIVELY DEVELOPED ACROSS EACH OF SAID PATHS, POTENTIAL-LEVELSENSITIVE CIRCUIT MEANS FOR PRODUCING SIGNAL PULSES TO BE EVALUATED IN RESPONSE TO THE SAID POTENTIAL DROP ACROSS EACH OF SAID PATHS, AND EVALUATING LOGIC CIRCUIT MEANS
References Cited (Backward Citations)
US3181120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |