Patents
Patent data provided by The
European Patent Office
and updated through early 2009. Full text patent data loaded weekly coming soon.
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US1799083 (A), filed
(unknown)
, published
(unknown)
- B I E SOCIETA ANONIMA BREVETTI
US2342886 (A), filed
(unknown)
, published
(unknown)
- BELL TELEPHONE LABOR INC
US2510072 (A), filed
(unknown)
, published
(unknown)
- STANDARD TELEPHONES CABLES LTD
US3235661 (A), filed
(unknown)
, published
(unknown)
- SYLVANIA ELECTRIC PROD
US3418428 (A), filed
(unknown)
, published
(unknown)
- ACEC
US4306308 (A), filed
Nov 14, 1979
, published
Dec 15, 1981
- RCA CORP
A data communications system for transmitting and receiving 64 different audio-frequency signals representing 64 respective alpha-numeric code symbols. A synchronizing signal consists of three time-spaced bursts where each burst consists of three audio-frequen...
US4694466 (A), filed
Jun 03, 1985
, published
Sep 15, 1987
- ITT DEFENSE COMMUNICATIONS
A frequency synthesizer circuit operates in a time shared mode. Thus the frequency synthesizer circuit operates to transmit and/or receive a particular frequency for a chosen small amount of time and then sequentially transmits and/or receives the other...
US5063574 (A), filed
Mar 06, 1990
, published
Nov 05, 1991
- MOOSE PAUL H
A differentially encoded digital signal waveform is generated as a discrete time representation of a desired analog signal utilizing multi-frequency modulation techniques. The computational capability of present day, industry-standard microcomputers equipped...
US5166924 (A), filed
Aug 10, 1990
, published
Nov 24, 1992
- MERCURY DIGITAL COMMUNICATIONS
US5228062 (A), filed
May 27, 1992
, published
Jul 13, 1993
- TELEBIT CORP
A method of correcting for the impairments of phase jitter and frequency offset imposed by a transmission medium and of a clock frequency difference between a transmitting and a receiving multicarrier modem is disclosed. The method comprises two modes: a...
US5606577 (A), filed
Jan 26, 1995
, published
Feb 25, 1997
- MOTOROLA INC
In a communication system that utilizes DMT technology to couple a primary site (102) to a plurality of secondary sites (104-108), the primary site (102) and each of the secondary sites (104-108) includes a DMT transmitter. Such a DMT transmitter includes a...
US5640423 (A), filed
Dec 16, 1993
, published
Jun 17, 1997
- SIGNAL SCIENCE INC
A structure and a method for transmitting digital data modulate the amplitude and the phase of a set of orthogonal band-limited finite duration waveforms. In one embodiment, a group of information symbols modulate in parallel a set of spectrally efficient...
