US3229272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Analog to digital time base encoder
Assignee: International Business Machines Corp
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Filing: 1961-12-29
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Granted: 1966-01-11
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Expires: 1981-12-29
Abstract
No abstract record available.
Inventors
- 👤 Charles L Cohen
- 👤 Otto L Saxild
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:04
CPC Classifications
H; H03; H03M; H03M1/00; G; G06; G06F; G06F1/00; G06F1/02; G06F1/025; H03M1/12; H03M1/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
A SIGNAL AMPLITUDE TO TIME CONVERSION MEANS COMPRISING: MEANS TO RECEIVE AN INPUT SIGNAL FOR CONVERSION; MEANS FOR PROVIDING A REFERENCE SIGNAL OF KNOWN AMPLITUDE; COMPARATOR MEANS FOR SUBTRACTING THE AMPLITUDE OF SAID INPUT SIGNAL FROM SAID REFERENCE SIGNAL SO THAT A RELATIVELY LARGE SIGNAL AMPLITUDE PROVIDES A RELATIVELY SMALL SIGNAL LEVEL IN THE OUTPUT THEREOF AND A RELATIVELY SMALL SIGNAL AMPLITUDE PROVIDES A RELATIVELY LARGE SIGNAL LEVEL IN THE OUTPUT THEREOF; INTEGRATOR MEANS FOR GENERATING A RAMP SIGNAL HAVING A SLOPE WHICH IS RELATED TO THE SIGNAL LEVEL APPLIED THERETO BY SAID SUBTRACTING MEANS; THRESHOLD GENERATING MEANS FOR GENERATING A SIGNAL LEVEL REPRESENTATIVE OF THE AMPLITUDE OF SAID INPUT SIGNAL; DETECTOR MEANS RESPONSIVE TO THE RAMP OUTPUT OF SAID INTEGRATOR MEANS AND TO SAID THRESHOLD LEVEL SIGNAL TO DETECT WHEN SAID RAMP INTEGRATOR OUTPUT SIGNAL BEARS A PRESELECTED RELATIONSHIP WITH SAID THRESHOLD LEVEL SIGNAL; MEANS RESPONSIVE TO SAID DETECTING MEANS FOR MEASURING THE TIME REQUIRED FOR SAID RAMP SIGNAL FROM SAID INTEGRATOR MEANS TO REACH SAID PRESELECTED RELATIONSHIP REPRESENTING THE TIME CONVERSION OF SAID INPUT SIGNAL APPLIED TO SAID SUBTRACTING MEANS.
Claim 2
Dependent Claim
182 words
A SIGNAL AMPLITUDE TO TIME CONVERSION MEANS COMPRISING: MEANS TO RECEIVE AN INPUT SIGNAL FOR CONVERSION; MEANS FOR PROVIDING A REFERENCE SIGNAL OF KNOWN AMPLITUDE; COMPARATOR MEANS FOR SUBTRACTING THE AMPLITUDE OF SAID INPUT SIGNAL FROM SAID REFERENCE SIGNAL SO THAT A RELATIVELY LARGE SIGNAL AMPLITUDE PROVIDES A RELATIVELY SMALL SIGNAL LEVEL IN THE OUTPUT THEREOF AND A RELATIVELY SMALL SIGNAL AMPLITUDE PROVIDES A RELATIVELY LARGE SIGNAL LEVEL IN THE OUTPUT THEREOF; INTEGRATOR MEANS FOR GENERATING A RAMP SIGNAL HAVING A SLOPE WHICH IS RELATED TO THE SIGNAL LEVEL APPLIED THERETO BY SAID SUBTRACTING MEANS; THRESHOLD GENERATING MEANS FOR GENERATING A SIGNAL LEVEL REPRESENTATIVE OF THE AMPLITUDE OF SAID INPUT SIGNAL; DETECTOR MEANS RESPONSIVE TO THE RAMP OUTPUT OF SAID INTEGRATOR MEANS AND TO SAID THRESHOLD LEVEL SIGNAL TO DETECT WHEN SAID RAMP INTEGRATOR OUTPUT SIGNAL BEARS A PRESELECTED RELATIONSHIP WITH SAID THRESHOLD LEVEL SIGNAL; MEANS RESPONSIVE TO SAID DETECTING MEANS FOR MEASURING THE TIME REQUIRED FOR SAID RAMP SIGNAL FROM SAID INTEGRATOR MEANS TO REACH SAID PRESELECTED RELATIONSHIP REPRESENTING THE TIME CONVERSION OF SAID INPUT SIGNAL APPLIED TO SAID SUBTRACTING MEANS.
References Cited (Backward Citations)
US2897486A
Cited
US2963697A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |