US3475727A
Expired / Lapsed
US
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Data transmission system having means for comparing signal duration and amplitude
Assignee: Evershed and Vignoles Ltd
•
Filing: 1966-08-18
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Granted: 1969-10-28
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Expires: 1986-08-18
Abstract
No abstract record available.
Inventors
- 👤 Ian R Young
- 👤 Arthur T Keefe
- 👤 Geoffrey Moss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:21
CPC Classifications
H; H03; H03K; H03K9/00; H03K9/08; G; G08; G08C; G08C19/00; G08C19/16; G08C19/22; H03K7/00; H03K7/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
APPARATUS FOR CONVERTING ELECTRIC SIGNALS IN WHICH DATA IS EXPRESSED BY VARIATIONS OF A FIRST PARAMETER INTO THE ELECTRIC SIGNALS IN WHICH THE SAME DATA IS EXPRESSED BY VARIATIONS OF A DIFFERENT PARAMETER, ONE OF THE SAID PARAMETERS BEING SIGNAL DURATION AND THE OTHER SIGNAL AMPLITUDE, INCLUDING MEANS FOR GENERATING A SIGNAL CORRESPONDING TO AN INEQUALITY IN THE RELATIONSHIPS BETWEEN THE VARIABLE SIGNAL AMPLITUDE AND A FIXED REFERENCE AMPLITUDE, ON THE ONE HAND, AND A FIXED REFERENCE DURATION AND THE VARIABLE SIGNAL DURATION ON THE OTHER HAND, ONE OF THE VARIABLE PARAMETERS BEING AN INPUT TO THE SYSTEM AND THE OTHER AN OUTPUT, TOGETHER WITH A CORRECTING CIRCUIT WHICH RECEIVES THE SAID INEQUALITY SIGNAL AND MODIFIES THE OUTPUT VARIABLE IN SUCH A SENSE AS TO REDUCE THE INEQUALITY.
Claim 2
Dependent Claim
128 words
APPARATUS FOR CONVERTING ELECTRIC SIGNALS IN WHICH DATA IS EXPRESSED BY VARIATIONS OF A FIRST PARAMETER INTO THE ELECTRIC SIGNALS IN WHICH THE SAME DATA IS EXPRESSED BY VARIATIONS OF A DIFFERENT PARAMETER, ONE OF THE SAID PARAMETERS BEING SIGNAL DURATION AND THE OTHER SIGNAL AMPLITUDE, INCLUDING MEANS FOR GENERATING A SIGNAL CORRESPONDING TO AN INEQUALITY IN THE RELATIONSHIPS BETWEEN THE VARIABLE SIGNAL AMPLITUDE AND A FIXED REFERENCE AMPLITUDE, ON THE ONE HAND, AND A FIXED REFERENCE DURATION AND THE VARIABLE SIGNAL DURATION ON THE OTHER HAND, ONE OF THE VARIABLE PARAMETERS BEING AN INPUT TO THE SYSTEM AND THE OTHER AN OUTPUT, TOGETHER WITH A CORRECTING CIRCUIT WHICH RECEIVES THE SAID INEQUALITY SIGNAL AND MODIFIES THE OUTPUT VARIABLE IN SUCH A SENSE AS TO REDUCE THE INEQUALITY.
References Cited (Backward Citations)
US2552013A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |