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1971-09-14 |
1975-06-03 |
Codex Corp |
Signal structures for double side band-quadrature carrier modulation
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1971-09-14 |
1989-09-12 |
Codex Corporation |
Signal structures for double side band-quadrature carrier modulation
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1972-05-05 |
1976-10-26 |
Milgo Electronic Corporation |
Integrated circuit modem with a memory storage device for generating a modulated carrier signal
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1972-05-08 |
1973-07-31 |
Bell Telephone Labor Inc |
Digital amplitude modulator
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1972-05-15 |
1974-01-22 |
Collins Radio Co |
Phase representative digital signal modulating apparatus
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FR2191796A5
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1972-06-26 |
1974-02-01 |
Sagem |
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1972-10-12 |
1974-06-18 |
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Differential phase-shift-keyed signal resolver
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1973-05-10 |
1976-03-09 |
Milgo Electronic Corporation |
Multiplexed data modem
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1973-05-15 |
1979-01-25 |
Siemens Ag, 1000 Berlin Und 8000 Muenchen |
Schaltungsanordnung zur frequenzdifferenziellen Phasenmodulation
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1974-07-19 |
1980-08-12 |
Nippon Telegraph & Telephone Public Corporation |
Amplitude and periodic phase modulation transmission system
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1974-07-19 |
1978-08-02 |
Nippon Telegraph & Telephone |
Data transmission system
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1974-10-18 |
1976-05-04 |
Intertel, Inc. |
Synchronizing circuit for modems in a data communications network
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1977-02-02 |
1978-10-17 |
The United States Of America As Represented By The Secretary Of The Air Force |
Differential tri-phase shift keyed modulation
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1978-01-31 |
1979-07-17 |
Harris Corporation |
Technique for tracking amplitude fades for multi-amplitude signalling
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1978-02-23 |
1981-09-15 |
Northrop Corporation |
Combined coherent frequency and phase shift keying modulation system
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1978-03-06 |
1979-10-09 |
Bell Telephone Laboratories, Incorporated |
Amplitude and frequency modulation system
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1978-10-19 |
1982-10-19 |
Racal-Milgo, Inc. |
Data modem false equilibrium circuit
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1980-10-24 |
1983-05-03 |
Bell Telephone Laboratories, Incorporated |
Demultiplex receiver apparatus
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1980-10-24 |
1983-04-26 |
Bell Telephone Laboratories, Incorporated |
Multiplex transmitter apparatus
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1981-12-28 |
1986-04-04 |
Lmt Radio Professionelle |
Emetteur et recepteur de messages constitues d'impulsions successives modulant une porteuse a frequence fixe
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1982-05-26 |
1985-01-15 |
At&T Bell Laboratories |
Frame synchronization and phase ambiguity resolution in QAM transmission systems
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1982-11-23 |
1984-05-25 |
Cit Alcatel |
Equipement de transmission synchrone de donnees
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1982-11-24 |
1984-07-26 |
ANT Nachrichtentechnik GmbH, 7150 Backnang |
Phasenumtastungs/amplitudenumtastungs (psk/ask)-system mit beliebiger stufenzahl
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1983-06-24 |
1986-02-25 |
Wolfdata, Inc. |
Digital modem with plural microprocessors
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1984-10-30 |
1989-11-17 |
Lignes Telegraph Telephon |
Demodulateur differentiel de signaux electriques a plusieurs etats d'amplitude et de phase pour equipements de transmission de donnees
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1993-12-01 |
1996-09-10 |
Datapoint Corporation |
Technique for cancelling common mode switching noise to achieve reduced error rates in a local area network
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1995-03-10 |
1997-06-27 |
France Telecom |
Signal module en phase et portant une surmodulation hierarchique, dispositif d'emission et recepteurs correspondants
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1996-03-27 |
1998-08-18 |
Motorola, Inc. |
Method and apparatus for modifying amplitude of at least one symbol
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2000-03-31 |
2003-01-10 |
Matra Nortel Communications |
Dispositif de production d'un signal radiofrequence module en phase et en amplitude
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2001-05-03 |
2005-08-16 |
Coreoptics, Inc. |
Amplitude detection for controlling the decision instant for sampling as a data flow
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2006-09-21 |
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Method for transmitting digital data analog communication facilities
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