US3211833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound transmitting device
Assignee: Telefunken Patentverwertungs GmbH
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Filing: 1961-11-29
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Granted: 1965-10-12
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Expires: 1981-11-29
Abstract
No abstract record available.
Inventors
- 👤 Warns Oskar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:00
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/66; H04B1/667
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
IN A DEVICE FOR TRANSMITTING A VOICE SIGNAL PROVIDED IN THE FORM OF AN ELECTRICAL SIGNAL, THE IMPROVEMENT COMPRISING: (A) FIRST MEANS FOR RECEIVING THE ELECTRICAL VOICE SIGNAL FOR DIVIDING THE ELECTRICAL SIGNAL INTO A PLURALITY OF SIGNALS OF DIFFERENT FREQUENCY RANGES HAVING ENVELOPE CURVE AMPLITUDES; (B) SECOND MEANS FOR RECEIVING THE ELECTRICAL VOICE SIGNAL FOR GENERATING A TOTAL ENVELOPE CURVE AMPLITUDE SIGNAL FROM THE ELECTRICAL SIGNAL; AND (C) MEANS CONNECTED WITH SAID DIVIDING MEANS AND SAID SIGNAL GENERATING MEANS FOR COMPARING EACH OF THE AMPLITUDE SIGNALS OF THE DIFFERENT FREQUENCY RANGES WITH THE TOTAL ENVELOPE CURVE AMPLITUDE SIGNAL AND FOR TRANSMITTING THE SIGNALS FROM ONLY THOSE FREQUENCY RANGES WHEREIN THE ENVELOPE CURVE AMPLITUDE EXCEEDS A GIVEN PORTION OF THE INSTANTANEOUS TOTAL ENVELOPE CURVE AMPLITUDE BY A PREDETERMINED AMOUNT.
Claim 2
Dependent Claim
129 words
IN A DEVICE FOR TRANSMITTING A VOICE SIGNAL PROVIDED IN THE FORM OF AN ELECTRICAL SIGNAL, THE IMPROVEMENT COMPRISING: (A) FIRST MEANS FOR RECEIVING THE ELECTRICAL VOICE SIGNAL FOR DIVIDING THE ELECTRICAL SIGNAL INTO A PLURALITY OF SIGNALS OF DIFFERENT FREQUENCY RANGES HAVING ENVELOPE CURVE AMPLITUDES; (B) SECOND MEANS FOR RECEIVING THE ELECTRICAL VOICE SIGNAL FOR GENERATING A TOTAL ENVELOPE CURVE AMPLITUDE SIGNAL FROM THE ELECTRICAL SIGNAL; AND (C) MEANS CONNECTED WITH SAID DIVIDING MEANS AND SAID SIGNAL GENERATING MEANS FOR COMPARING EACH OF THE AMPLITUDE SIGNALS OF THE DIFFERENT FREQUENCY RANGES WITH THE TOTAL ENVELOPE CURVE AMPLITUDE SIGNAL AND FOR TRANSMITTING THE SIGNALS FROM ONLY THOSE FREQUENCY RANGES WHEREIN THE ENVELOPE CURVE AMPLITUDE EXCEEDS A GIVEN PORTION OF THE INSTANTANEOUS TOTAL ENVELOPE CURVE AMPLITUDE BY A PREDETERMINED AMOUNT.
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) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |