US3345908A
Expired / Lapsed
US
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Print characteristics displayer
Assignee: International Business Machines Corp
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Filing: 1963-08-16
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Granted: 1967-10-10
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Expires: 1983-08-16
Abstract
No abstract record available.
Inventors
- 👤 Roy A Jensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:16
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/10544; G06K7/10821; G06K7/10851; G06V; G06V10/00; G06V10/98; G06V10/993; H; H04; H04N; H04N1/00; H04N1/00002; H04N1/00005
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
122 words
AN APPARATUS FOR PRODUCING A CURVE CONTAINING INFORMATION RELATING TO THE PRINT CHARACTERISTICS OF AN IMAGE COMPRISING: OPTOELECTRONIC MEANS FOR SCANNING SAID IMAGE, SAID OPTOELECTRONIC MEANS PROVIDING AN OUTPUT DURING EACH CROSSING OF A SEGMENT OF SAID IMAGE, MEANS FOR GENERATING A RAMP VOLTAGE, ADDING MEANS, RECEIVING SAID RAMP VOLTAGE AND SAID OUTPUT FROM SAID PHOTOELECTRONIC MEANS, PRODUCING A THIRD SIGNAL WHICH IS THE SUM OF SAID OUTPUT FROM SAID PHOTOELECTRONIC MEANS AND SAID RAMP VOLTAGE, BISTABLE GATING MEANS RECEIVING SAID THIRD SIGNAL AND PRODUCING AN OUTPUT WHEN SAID THIRD SIGNAL FROM SAID ADDING MEANS EXCEEDS A PREDETERMINED LEVEL, INTEGRATING MEANS, COUPLED TO SAID BISTABLE GATING MEANS, PRODUCING A SIGNAL PROPORTIONAL TO THE TIME WHICH SAID BISTABLE GATING MEANS PRODUCES A SIGNAL,
References Cited (Backward Citations)
US2738499A
Cited
US3213422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-09 | 1971-04-10 | 1971-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-09 | 1975-04-10 | 1975-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-09 | 1979-04-10 | 1979-10-10 | $7700.00 | Window Closed / Lapsed |