US3588702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmitter for single sideband transmission bivalent of pulse
Assignee: US Philips Corp
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Filing: 1968-12-23
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Granted: 1971-06-28
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Expires: 1988-12-23
Abstract
Abstract BINARY INFORMATION IS TRANSMITTED AS A SINGLE SIDEBAND SIGNAL TO A RECEIVING STATION. THE BINARY SIGNAL IS FIRST CONVERTED TO A THREE LEVEL SIGNAL. PHASE QUADRATIVE VERSIONS OF THIS THREE LEVEL SIGNAL ARE PRODUCED BY USING TWO MODULATORS SUPPLIED WITH 90* RELATIVE PHASE SHIFTED VERSIONS OF A CARRIER EQUAL TO ONE QUARTER OF THE BINARY PULSE FREQUENCY. THE PHASE SHIFTED VERSIONS OF THE THREE LEVEL SIGNAL ARE THEN EACH MODULATED ON PHASE QUADRATURE VERSIONS OF THE TRANSMISSION FREQUENCY CARRIER AND COMBINED FOR TRANSMISSION AS A SINGLE SIDEBAND SIGNAL. THE TWO CARRIERS ARE TRANSMITTED AS A PILOT.
Inventors
- 👤 Felix D Tisi
- 👤 Peter Leuthold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:24
CPC Classifications
H; H04; H04L; H04L27/00; H04L27/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |