Patent US3084328A successfully refreshed from Google Patents.
US3084328A
Expired / Lapsed
US
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Suppressed carrier signle-sideband transmission system
Assignee: US Philips Corp
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Filing: 1959-05-26
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Granted: 1963-04-02
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Expires: 1979-05-26
Abstract
No abstract record available.
Inventors
- 👤 Groeneveld Yme Bouwinus Fo Jan
- 👤 Potjer Aildert Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:49
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/06; H04B1/16; H04B1/30; H04B1/302; H04B1/68
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A SUPPRESSED CARRIER SINGLE-SIDEBAND TRANSMISSION SYSTEM COMPRISING A TRANSMITTER AND A RECEIVER; SAID TRANSMITTER COMPRISING A SOURCE OF INPUT SIGNALS TO BE TRANSMITTED, A SOURCE OF AN AUDIO FREQUENCY PILOT OSCILLATION, A SOURCE OF A CARRIER OSCILLATION, AND SINGLE-SIDEBAND MODULATOR MEANS CONNECTED TO MODULATE SAID CARRIER OSCILLATIONS WITH SAID INPUT SIGNALS AND SAID PILOT OSCILLATION TO PROVIDE A SINGLE-SIDEBAND OUTPUT SIGNAL WITH THE INFORMATION RELATING TO SAID INPUT SIGNALS AND PILOT OSCILLATION IN THE SAME SIDEBAND; SAID RECEIVER COMPRISING A SOURCE OF LOCAL OSCILLATIONS, DEMODULATOR MEANS, MEANS APPLYING SAID LOCAL OSCILLATIONS AND SAID SINGLE-SIDEBAND SIGNAL TO SAID DEMODULATOR TO DEMODULATE SAID SINGLE-SIDEBAND SIGNALS, FILTER MEANS FOR SEPARATING SAID PILOT OSCILLATIONS FROM THE OUTPUT OF SAID DEMODULATOR MEANS, FREQUENCY CORRECTOR MEANS CONNECTED TO SAID SOURCE OF LOCAL OSCILLATIONS; AUTOMATIC FREQUENCY CONTROL DISCRIMINATOR MEANS TUNED TO THE ORIGINAL FREQUENCY OF SAID PILOT OSCILLATIONS, MEANS APPLYING SAID SEPARATED PILOT OSCILLATIONS TO SAID DISCRIMINATOR MEANS TO PROVIDE A CONTROL VOLTAGE, AND MEANS APPLYING SAID CONTROL VOLTAGE TO SAID FREQUENCY CORRECTOR MEANS.
Claim 2
Dependent Claim
167 words
A SUPPRESSED CARRIER SINGLE-SIDEBAND TRANSMISSION SYSTEM COMPRISING A TRANSMITTER AND A RECEIVER; SAID TRANSMITTER COMPRISING A SOURCE OF INPUT SIGNALS TO BE TRANSMITTED, A SOURCE OF AN AUDIO FREQUENCY PILOT OSCILLATION, A SOURCE OF A CARRIER OSCILLATION, AND SINGLE-SIDEBAND MODULATOR MEANS CONNECTED TO MODULATE SAID CARRIER OSCILLATIONS WITH SAID INPUT SIGNALS AND SAID PILOT OSCILLATION TO PROVIDE A SINGLE-SIDEBAND OUTPUT SIGNAL WITH THE INFORMATION RELATING TO SAID INPUT SIGNALS AND PILOT OSCILLATION IN THE SAME SIDEBAND; SAID RECEIVER COMPRISING A SOURCE OF LOCAL OSCILLATIONS, DEMODULATOR MEANS, MEANS APPLYING SAID LOCAL OSCILLATIONS AND SAID SINGLE-SIDEBAND SIGNAL TO SAID DEMODULATOR TO DEMODULATE SAID SINGLE-SIDEBAND SIGNALS, FILTER MEANS FOR SEPARATING SAID PILOT OSCILLATIONS FROM THE OUTPUT OF SAID DEMODULATOR MEANS, FREQUENCY CORRECTOR MEANS CONNECTED TO SAID SOURCE OF LOCAL OSCILLATIONS; AUTOMATIC FREQUENCY CONTROL DISCRIMINATOR MEANS TUNED TO THE ORIGINAL FREQUENCY OF SAID PILOT OSCILLATIONS, MEANS APPLYING SAID SEPARATED PILOT OSCILLATIONS TO SAID DISCRIMINATOR MEANS TO PROVIDE A CONTROL VOLTAGE, AND MEANS APPLYING SAID CONTROL VOLTAGE TO SAID FREQUENCY CORRECTOR MEANS.
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) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |