US3310758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ternary pulse width generation
Assignee: North American Aviation Corp
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Filing: 1964-06-24
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Granted: 1967-03-21
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Expires: 1984-06-24
Abstract
No abstract record available.
Inventors
- 👤 George B Cottrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:32
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/01; H03K7/00; H03K7/08; Y; Y10; Y10S; Y10S388/00; Y10S388/907; Y10S388/915
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A PULSE WIDTH MODULATOR COMPRISING A SOURCE OF CONTROL SIGNAL, MEANS RESPONSIVE TO SAID CONTROL SIGNAL FOR PROVIDING A PLURALITY OF FIRST PULSES, MEANS RESPONSIVE TO SAID CONTROL SIGNAL FOR PROVIDING A PLURALITY OF SECOND PULSES WITH EACH OF SAID SECOND PULSES NORMALLY HAVING SUBSTANTIALLY THE SAME TIME WIDTH AND TIME DOMAIN AS A CORRESPONDING ONE OF SAID FIRST PULSES, SAID SOURCE OF CONTROL SIGNAL BEING OPERATIVE TO INCREASE THE TIME WIDTH OF SAID FIRST PULSES AS THE AMPLITUDE OF SAID CONTROL SIGNAL INCREASES AND BEING OPERATIVE TO DECREASE THE TIME WIDTH OF SAID SECOND PULSES AS THE AMPLITUDE OF SAID CONTROL SIGNAL INCREASES, AND MEANS RESPONSIVE TO SAID PLURALITY OF FIRST PULSES AND SAID PLURALITY OF SECOND PULSES FOR PRODUCING AN OUTPUT SIGNAL WHICH IS REPRESENTATIVE OF THE DIFFERENCE OF THE TIME WIDTH OF SAID FIRST PULSES AND SAID SECOND PULSES.
Claim 2
Dependent Claim
142 words
A PULSE WIDTH MODULATOR COMPRISING A SOURCE OF CONTROL SIGNAL, MEANS RESPONSIVE TO SAID CONTROL SIGNAL FOR PROVIDING A PLURALITY OF FIRST PULSES, MEANS RESPONSIVE TO SAID CONTROL SIGNAL FOR PROVIDING A PLURALITY OF SECOND PULSES WITH EACH OF SAID SECOND PULSES NORMALLY HAVING SUBSTANTIALLY THE SAME TIME WIDTH AND TIME DOMAIN AS A CORRESPONDING ONE OF SAID FIRST PULSES, SAID SOURCE OF CONTROL SIGNAL BEING OPERATIVE TO INCREASE THE TIME WIDTH OF SAID FIRST PULSES AS THE AMPLITUDE OF SAID CONTROL SIGNAL INCREASES AND BEING OPERATIVE TO DECREASE THE TIME WIDTH OF SAID SECOND PULSES AS THE AMPLITUDE OF SAID CONTROL SIGNAL INCREASES, AND MEANS RESPONSIVE TO SAID PLURALITY OF FIRST PULSES AND SAID PLURALITY OF SECOND PULSES FOR PRODUCING AN OUTPUT SIGNAL WHICH IS REPRESENTATIVE OF THE DIFFERENCE OF THE TIME WIDTH OF SAID FIRST PULSES AND SAID SECOND PULSES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |