US3091738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit passing only signals of durations longer than a predetermined value despite changes in scan speed
Assignee: Unisys Corp
•
Filing: 1958-05-23
•
Granted: 1963-05-28
•
Expires: 1978-05-23
Abstract
No abstract record available.
Inventors
- 👤 Matthew J Relis
- 👤 Carl M Mengani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:09
CPC Classifications
G; G01; G01R; G01R29/00; G01R29/02; G01R29/027; G01R29/0273; G06; G06V; G06V30/00; G06V30/10; G06V30/16; G06V30/164
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
IN A CHARACTER RECOGNITION DEVICE IN WHICH INFORMATION ON A RECORD MEDIUM IS SENSED BY A SCANNING DEVICE AT A RATE OF SPEED WHICH MAY VARY, THE SCANNING DEVICE GENERATING DESIRED INFORMATION SIGNALS REPRESENTATIVE OF THE INFORMATION BEING SCANNED AND UNDESIRED NOISE SIGNALS TO BE FILTERED, CIRCUIT MEANS FOR DISCRIMINATING BETWEEN SAID INFORMATION SIGNALS AND SAID NOISE SIGNALS, AND MEANS FOR APPLYING TO SAID DISCRIMINATING CIRCUIT MEANS REFERENCE SIGNAL REPRESENTATIVE OF THE RATE OF SCANNING SPEED OF SAID SCANNING DEVICE FOR CONTROLLING SAID DIS-
Claim 2
Dependent Claim
84 words
IN A CHARACTER RECOGNITION DEVICE IN WHICH INFORMATION ON A RECORD MEDIUM IS SENSED BY A SCANNING DEVICE AT A RATE OF SPEED WHICH MAY VARY, THE SCANNING DEVICE GENERATING DESIRED INFORMATION SIGNALS REPRESENTATIVE OF THE INFORMATION BEING SCANNED AND UNDESIRED NOISE SIGNALS TO BE FILTERED, CIRCUIT MEANS FOR DISCRIMINATING BETWEEN SAID INFORMATION SIGNALS AND SAID NOISE SIGNALS, AND MEANS FOR APPLYING TO SAID DISCRIMINATING CIRCUIT MEANS REFERENCE SIGNAL REPRESENTATIVE OF THE RATE OF SCANNING SPEED OF SAID SCANNING DEVICE FOR CONTROLLING SAID DIS-
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-27 | 1966-11-26 | 1967-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-27 | 1970-11-26 | 1971-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-27 | 1974-11-26 | 1975-05-28 | $7700.00 | Window Closed / Lapsed |