US3167721A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistorized noise pulse blanking network including feedback means
Assignee: Collins Radio Co
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Filing: 1963-02-18
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Granted: 1965-01-26
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Expires: 1983-02-18
Abstract
No abstract record available.
Inventors
- 👤 Jr Samuel L Broadhead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:16
CPC Classifications
H; H03; H03G; H03G3/00; H03G3/20; H03G3/30; H03G3/34; H03G3/345
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
126 words
A NETWORK FOR ELIMINATING NOISE PULSES SUPERPOSED ON A RECEIVED AUDIO SIGNAL, SAID NETWORK COMPRISING: MEANS FOR CLIPPING SAID SPURIOUS PULSES AT A PREDETERMINED LEVEL; SIGNAL COMBINING MEAN; MEANS FOR COUPLING THE OUTPUT SIGNAL FROM SAID CLIPPING MEANS TO SAID SIGNAL COMBINING MEANS; AN AMPLIFIER CONNECTED TO SAID CLIPPING MEANS, SAID AMPLIFIER BEING BIASED TO PASS ONLY NOISE PULSES AND IN VERTING THE SAME; MEANS FOR COUPLING THE OUTPUT FROM SAID AMPLIFIER TO SAID SIGNAL COMBINING MEANS; AND FEEDBACK MEANS INCLUDING A LOW-PASS FILTER CONNECTED BETWEEN SAID SIGNAL COMBINING MEANS AND SAID AMPLIFIER FOR CONTROLLING THE AMPLITUDE OF THE OUTPUT PULSES FROM SAID AMPLIFIER SO THAT SAID INVERTED NOISE PULSES COUPLED TO SAID SIGNAL COMBINING MEANS SUBSTANTIALLY CANCEL ALL NOISE PULSES SUPERPOSED ON THE AUDIO SIGNAL.
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) | 1968-01-26 | 1968-07-27 | 1969-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-26 | 1972-07-27 | 1973-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-26 | 1976-07-27 | 1977-01-26 | $7700.00 | Window Closed / Lapsed |