US3264637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Logarithmic converters
Assignee: Raytheon Co
•
Filing: 1963-05-31
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Granted: 1966-08-02
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Expires: 1983-05-31
Abstract
No abstract record available.
Inventors
- 👤 Geoffrey B Parkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:24
CPC Classifications
H; H04; H04B; H04B14/00; H04B14/02; H04B14/04; H04B14/046; H04B14/048; H03; H03M; H03M1/00; H03M1/12; H03M1/34; H03M1/38; H03M1/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A CONVERTER FOR CHANGING AN ANALOG SIGNAL REPRESENTATION TO A DIGITAL LOGARITHM REPRESENTATION HAVING A PREDETERMINED BASE, COMPRISING A COMPARATOR CIRCUIT TO COMPARE AN ANALOG SIGNAL WITH A GENERATED COMPARISION SIGNAL, A CONTROL CIRCUIT OPERATING IN RESPONSE TO SAID COMPARISON SIGNAL, SAID CONTROL CIRCUIT PROVIDING A PLURALITY OF SEQUENTIAL ACTUATING SIGNALS, A REGISTER HAVING A PLURALITY OF STORAGE DEVICES EACH REPRESENTING A VALUE OF TWO TO A DIFFERENT POWER AND BEING RESPONSIVE TO SAID ACTUATING SIGNALS FOR PROVIDING A PLURALITY OF SELECTION SIGNALS, AND AN ANTI-LOGARITHMIC DIGITAL TO ANALOG CONVERTER RESPONSIVE TO SAID SELECTION SIGNALS INCLUDING A PLURALITY OF MULTIPLIER MEANS FOR SELECTIVELY MUTIPLYING A REFERENCE SIGNALS BY A PLURALITY OF SUCCESSIVE WEIGHTED CONSTANTS TO GENERATE SAID COMPARISON SIGNAL, EACH OF SAID MULTIPLIER MEANS BEING COUPLED TO A DIFFERENT ONE OF SAID
Claim 2
Dependent Claim
132 words
A CONVERTER FOR CHANGING AN ANALOG SIGNAL REPRESENTATION TO A DIGITAL LOGARITHM REPRESENTATION HAVING A PREDETERMINED BASE, COMPRISING A COMPARATOR CIRCUIT TO COMPARE AN ANALOG SIGNAL WITH A GENERATED COMPARISION SIGNAL, A CONTROL CIRCUIT OPERATING IN RESPONSE TO SAID COMPARISON SIGNAL, SAID CONTROL CIRCUIT PROVIDING A PLURALITY OF SEQUENTIAL ACTUATING SIGNALS, A REGISTER HAVING A PLURALITY OF STORAGE DEVICES EACH REPRESENTING A VALUE OF TWO TO A DIFFERENT POWER AND BEING RESPONSIVE TO SAID ACTUATING SIGNALS FOR PROVIDING A PLURALITY OF SELECTION SIGNALS, AND AN ANTI-LOGARITHMIC DIGITAL TO ANALOG CONVERTER RESPONSIVE TO SAID SELECTION SIGNALS INCLUDING A PLURALITY OF MULTIPLIER MEANS FOR SELECTIVELY MUTIPLYING A REFERENCE SIGNALS BY A PLURALITY OF SUCCESSIVE WEIGHTED CONSTANTS TO GENERATE SAID COMPARISON SIGNAL, EACH OF SAID MULTIPLIER MEANS BEING COUPLED TO A DIFFERENT ONE OF SAID
References Cited (Backward Citations)
US2597866A
Cited
US2784396A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |