Patent US3188907A successfully refreshed from Google Patents.
US3188907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Opto-electrical scanning system for gray level detection
Assignee: International Business Machines Corp
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Filing: 1962-11-27
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Granted: 1965-06-15
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Expires: 1982-11-27
Abstract
No abstract record available.
Inventors
- 👤 Kurt M Trampel
- 👤 Hans H Jensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:58
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
OPTO-ELECTRICAL APPARATUS FOR SCANNING AND CORRELATING INFORMATION CONTAINED ON A TRANSPARENCY IN THE FORM OF AREAS OF DIFFERENT LIGHT TRANSMISSIVITY, COMPRISING LIGHT MEANS FOR SCANNING THE TRANSPARENCY, AN OPTO-ELECTRICAL TRANSDUCER POSITIONED TO RESPOND TO THE LIGHT MODULATIONS OBTAINED FROM THE TRANSPARENCY TO PRODUCE ELECTRICAL SIGNALS IN ACCORDANCE WITH THE INFORMATION CONTAINED ON THE TRANSPARENCY, A STANDARD SCALE OF KNOWN LIGHT TRANSMISSIVITY AREAS, SAID TRANSDUCER PRODUCING AN ELECTRICAL SIGNAL INDICATIVE OF A PARTICULAR REFERENCE AREA OF LIGHT TRANSMISSIVITY WHEN ON OF SAID AREAS OF THE SCALE IS SCANNED BY SAID LIGHT MEANS, MEANS FOR STORING THE SIGNAL INDICATIVE OF A REFERENCE AREA, AND MEANS FOR COMPARING THE SIGNAL INDICATIVE OF A REFERENCE AREA AND SIGNALS INDICATIVE OF THE TRANSPARENCY INFORMATION TO PROVIDE AN INDICATION OF THE RELATIONSHIP BETWEEN THEM.
Claim 2
Dependent Claim
128 words
OPTO-ELECTRICAL APPARATUS FOR SCANNING AND CORRELATING INFORMATION CONTAINED ON A TRANSPARENCY IN THE FORM OF AREAS OF DIFFERENT LIGHT TRANSMISSIVITY, COMPRISING LIGHT MEANS FOR SCANNING THE TRANSPARENCY, AN OPTO-ELECTRICAL TRANSDUCER POSITIONED TO RESPOND TO THE LIGHT MODULATIONS OBTAINED FROM THE TRANSPARENCY TO PRODUCE ELECTRICAL SIGNALS IN ACCORDANCE WITH THE INFORMATION CONTAINED ON THE TRANSPARENCY, A STANDARD SCALE OF KNOWN LIGHT TRANSMISSIVITY AREAS, SAID TRANSDUCER PRODUCING AN ELECTRICAL SIGNAL INDICATIVE OF A PARTICULAR REFERENCE AREA OF LIGHT TRANSMISSIVITY WHEN ON OF SAID AREAS OF THE SCALE IS SCANNED BY SAID LIGHT MEANS, MEANS FOR STORING THE SIGNAL INDICATIVE OF A REFERENCE AREA, AND MEANS FOR COMPARING THE SIGNAL INDICATIVE OF A REFERENCE AREA AND SIGNALS INDICATIVE OF THE TRANSPARENCY INFORMATION TO PROVIDE AN INDICATION OF THE RELATIONSHIP BETWEEN THEM.
References Cited (Backward Citations)
US3072889A
Cited
US3064249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |