US3320536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for signal modulation control
Assignee: Storer Broadcasting Co
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Filing: 1964-10-20
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Granted: 1967-05-16
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Expires: 1984-10-20
Abstract
No abstract record available.
Inventors
- 👤 Edward C Lockwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:24
CPC Classifications
G; G01; G01R; G01R29/00; G01R29/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A METHOD FOR MAINTAINING A MAXIMUM AVERAGE MODULATION OUTPUT LEVEL FOR AN AMPLITUDE MODULATED SIGNAL SOURCE WHICH PROVIDES AN AMPLITUDE MODULATED CARRIER OUTPUT SIGNAL UPON THE RECEPTION OF AN INPUT SIGNAL FROM A MODULATING WAVE SOURCE WHICH CONSISTS IN DERIVING FROM SAID AMPLITUDE MODULATED CARRIER OUTPUT SIGNAL AN ALTERNATING ELECTROMOTIVE FORCE PROPORTIONAL TO THE INPUT SIGNAL FROM SAID MODULATING WAVE SOURCE, COMPARING THE PEAKS OF THE NEGATIVE EXCURSIONS OF SAID ALTERNATING ELECTROMOTIVE FORCE TO THE PEAKS OF THE POSITIVE EXCURSIONS THEREOF, DERIVING FROM SAID PEAK COMPARISION A CONTROL SIGNAL OF A POLARITY AND AMPLITUDE DEPENDENT UPON THE AVERAGE VARIATION IN AMPLITUDE BETWEEN SAID NEGATIVE AND POSITIVE PEAKS, AND EMPLOYING SAID CONTROL SIGNAL TO CONTROL THE POLARITY OF THE INPUT SIGNAL RECEIVED BY SAID AMPLITUDE MODULATED SIGNAL SOURCE FROM SAID MODULATING WAVE SOURCE WHEREBY A MAXIMUM AVERAGE MODULATION LEVEL OF ONE POLARITY IS MAINTAINED.
Claim 2
Independent Claim
143 words
A METHOD FOR MAINTAINING A MAXIMUM AVERAGE MODULATION OUTPUT LEVEL FOR AN AMPLITUDE MODULATED SIGNAL SOURCE WHICH PROVIDES AN AMPLITUDE MODULATED CARRIER OUTPUT SIGNAL UPON THE RECEPTION OF AN INPUT SIGNAL FROM A MODULATING WAVE SOURCE WHICH CONSISTS IN DERIVING FROM SAID AMPLITUDE MODULATED CARRIER OUTPUT SIGNAL AN ALTERNATING ELECTROMOTIVE FORCE PROPORTIONAL TO THE INPUT SIGNAL FROM SAID MODULATING WAVE SOURCE, COMPARING THE PEAKS OF THE NEGATIVE EXCURSIONS OF SAID ALTERNATING ELECTROMOTIVE FORCE TO THE PEAKS OF THE POSITIVE EXCURSIONS THEREOF, DERIVING FROM SAID PEAK COMPARISION A CONTROL SIGNAL OF A POLARITY AND AMPLITUDE DEPENDENT UPON THE AVERAGE VARIATION IN AMPLITUDE BETWEEN SAID NEGATIVE AND POSITIVE PEAKS, AND EMPLOYING SAID CONTROL SIGNAL TO CONTROL THE POLARITY OF THE INPUT SIGNAL RECEIVED BY SAID AMPLITUDE MODULATED SIGNAL SOURCE FROM SAID MODULATING WAVE SOURCE WHEREBY A MAXIMUM AVERAGE MODULATION LEVEL OF ONE POLARITY IS MAINTAINED.
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) | 1970-05-15 | 1970-11-14 | 1971-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-15 | 1974-11-14 | 1975-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-15 | 1978-11-14 | 1979-05-16 | $7700.00 | Window Closed / Lapsed |