US3137789A
Expired / Lapsed
US
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Assignee: North American Aviation Corp
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Filing: 1960-11-16
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Granted: 1964-06-16
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Expires: 1980-11-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Anton Chiapuzio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:03
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/02; G06F7/026
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
327 words
IN A DIGITAL COMPARATOR HAVING A PLURALITY OF STAGES RESPONSIVE IN PARALLEL TO CORRESPONDING ORDERS OF TWO NUMBERS HAVING THE SAME RADIX THE COMBINATION OF, A CARRY GENERATE LINE FOR GENERATING A CARRY SIGNAL INDICATING THAT THE DIGIT OF SAID FIRST NUMBER IS LARGER THAN THE CORRESPONDING DIGIT OF SAID OTHER NUMBER, SAID CARRY GENERATE LINE INCLUDING A FIRST BRANCH HAVING A FIRST DIODE AND A RESISTOR SERIES CONNECTED TO RECEIVE THE DIGIT OF SAID FIRST NUMBER, SAID DIODE BEING POLED IN A DIRECTION TO PASS SIGNALS INDICATIVE OF A TRUE SENSE OF THE DIGIT OF SAID FIRST NUMBER, AND A SECOND BRANCH HAVING A SECOND DIODE CONNECTED BETWEEN ONE ELECTRODE OF SAID FIRST DIODE AND A TERMINAL FOR RECEIVING THE COMPLEMENT OF THE CORRESPONDING DIGIT OF SAID SECOND NUMBER, SAID SECOND DIODE OPPOSITELY POLED FROM SAID FIRST DIODE TO PASS SIGNALS INDICATIVE OF A FALSE SENSE OF THE COMPLEMENT OF SAID SECOND DIGIT, A CARRY SUPPRESS LINE FOR GENERATING A SUPPRESS SIGNAL INDICATING THAT THE DIGIT OF SAID SECOND NUMBER IS LARGER THAN THE CORRESPONDING DIGIT OF SAID FIRST NUMBER, SAID CARRY SUPPRESS LINE INCLUDING A FIRST BRANCH HAVING A FIRST DIODE AND A RESISTOR SERIES CONNECTED TO RECEIVE THE COMPLEMENT OF THE DIGIT OF SAID SECOND NUMBER, SAID FIRST DIODE BEING POLED IN A DIRECTION TO PASS SIGNALS INDICATIVE OF A FALSE SENSE OF THE COMPLEMENT OF SAID SECOND DIGIT, AND A SECOND BRANCH HAVING A SECOND DIODE CONNECTED BETWEEN ONE ELECTRODE OF SAID FIRST DIODE AND A TERMINAL FOR RECEIVING THE CORRESPONDING DIGIT OF SAID FIRST NUMBER, SAID SECOND DIODE POLED TO PASS SIGNALS INDICATIVE OF A TRUE SENSE OF THE DIGIT OF SAID FIRST NUMBER, A CARRY PROPAGATE LINE INCLUDING A DIODE CONNECTED BETWEEN THE OTHER ELECTRODE OF THE FIRST DIODE OF SAID SUPPRESS LINE AND THE OPPOSITE ELECTRODE OF THE FIRST DIODE OF SAID CARRY LINE, THE DIODE OF SAID CARRY PROPAGATE LINE POLED TO PASS SIGNALS INDICATIVE OF A TRUE SENSE.
Claim 2
Dependent Claim
327 words
IN A DIGITAL COMPARATOR HAVING A PLURALITY OF STAGES RESPONSIVE IN PARALLEL TO CORRESPONDING ORDERS OF TWO NUMBERS HAVING THE SAME RADIX THE COMBINATION OF, A CARRY GENERATE LINE FOR GENERATING A CARRY SIGNAL INDICATING THAT THE DIGIT OF SAID FIRST NUMBER IS LARGER THAN THE CORRESPONDING DIGIT OF SAID OTHER NUMBER, SAID CARRY GENERATE LINE INCLUDING A FIRST BRANCH HAVING A FIRST DIODE AND A RESISTOR SERIES CONNECTED TO RECEIVE THE DIGIT OF SAID FIRST NUMBER, SAID DIODE BEING POLED IN A DIRECTION TO PASS SIGNALS INDICATIVE OF A TRUE SENSE OF THE DIGIT OF SAID FIRST NUMBER, AND A SECOND BRANCH HAVING A SECOND DIODE CONNECTED BETWEEN ONE ELECTRODE OF SAID FIRST DIODE AND A TERMINAL FOR RECEIVING THE COMPLEMENT OF THE CORRESPONDING DIGIT OF SAID SECOND NUMBER, SAID SECOND DIODE OPPOSITELY POLED FROM SAID FIRST DIODE TO PASS SIGNALS INDICATIVE OF A FALSE SENSE OF THE COMPLEMENT OF SAID SECOND DIGIT, A CARRY SUPPRESS LINE FOR GENERATING A SUPPRESS SIGNAL INDICATING THAT THE DIGIT OF SAID SECOND NUMBER IS LARGER THAN THE CORRESPONDING DIGIT OF SAID FIRST NUMBER, SAID CARRY SUPPRESS LINE INCLUDING A FIRST BRANCH HAVING A FIRST DIODE AND A RESISTOR SERIES CONNECTED TO RECEIVE THE COMPLEMENT OF THE DIGIT OF SAID SECOND NUMBER, SAID FIRST DIODE BEING POLED IN A DIRECTION TO PASS SIGNALS INDICATIVE OF A FALSE SENSE OF THE COMPLEMENT OF SAID SECOND DIGIT, AND A SECOND BRANCH HAVING A SECOND DIODE CONNECTED BETWEEN ONE ELECTRODE OF SAID FIRST DIODE AND A TERMINAL FOR RECEIVING THE CORRESPONDING DIGIT OF SAID FIRST NUMBER, SAID SECOND DIODE POLED TO PASS SIGNALS INDICATIVE OF A TRUE SENSE OF THE DIGIT OF SAID FIRST NUMBER, A CARRY PROPAGATE LINE INCLUDING A DIODE CONNECTED BETWEEN THE OTHER ELECTRODE OF THE FIRST DIODE OF SAID SUPPRESS LINE AND THE OPPOSITE ELECTRODE OF THE FIRST DIODE OF SAID CARRY LINE, THE DIODE OF SAID CARRY PROPAGATE LINE POLED TO PASS SIGNALS INDICATIVE OF A TRUE SENSE.
References Cited (Backward Citations)
US2837732A
Cited
US2843837A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |