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Class Information
Number: 455/46
Name: Telecommunications > Transmitter and receiver at separate stations > Suppressed carrier wave system
Description: Subject matter where the carrier component of a modulated wave is suppressed at the transmitter so that only the information bearing sideband or sidebands are transmitted and received.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7620372 |
Communication device, method for controlling communication, game machine, and game system |
Nov. 17, 2009 |
| 7599661 |
Method for generating power supply interruption time information in a contactless data carrier |
Oct. 6, 2009 |
| 7440729 |
Apparatus, methods and articles of manufacture for output impedance matching using multi-band signal processing |
Oct. 21, 2008 |
| 7263713 |
Television signal distributor apparatus, receiver apparatus, television signal transmission system and method |
Aug. 28, 2007 |
| 7215927 |
Radio communication apparatus and radio transmission method |
May. 8, 2007 |
| 7020177 |
Method and apparatus to transfer information |
Mar. 28, 2006 |
| 6978026 |
Circuit arrangement for gaining a stereo subcarrier and an RDS carrier |
Dec. 20, 2005 |
| 6901246 |
Suppressed cycle based carrier modulation using amplitude modulation |
May. 31, 2005 |
| 6895252 |
Economical extension of the operating distance of an RF remote link accommodating information signals having differing carrier frequencies |
May. 17, 2005 |
| 6810027 |
Multi-carrier transmitting apparatus and method |
Oct. 26, 2004 |
| 6463039 |
Method and apparatus for full duplex sideband communication |
Oct. 8, 2002 |
| 6426716 |
Modulated pulse doppler sensor |
Jul. 30, 2002 |
| 6243424 |
Method and apparatus for AM digital broadcasting |
Jun. 5, 2001 |
| 6125271 |
Front end filter circuitry for a dual band GSM/DCS cellular phone |
Sep. 26, 2000 |
| 6081697 |
Multi-carrier radio system and radio transceiver implementation |
Jun. 27, 2000 |
| 6058291 |
Methods and apparatus for carrier suppression in a radio modulator |
May. 2, 2000 |
| 6023614 |
Method for decoding a suppressed-carrier modulated signal in the presence of a pilot tone, particularly for FM signals |
Feb. 8, 2000 |
| 5959550 |
Remote meter reading system |
Sep. 28, 1999 |
| 5742645 |
Method of digital demodulation of a composite signal |
Apr. 21, 1998 |
| 5619248 |
Video signal distribution system microwave radio link for transmitting double sideband phase modulated carrier signal |
Apr. 8, 1997 |
| 5507024 |
FM data-system radio receiver |
Apr. 9, 1996 |
| 5491839 |
System for short range transmission of a plurality of signals simultaneously over the air using high frequency carriers |
Feb. 13, 1996 |
| 5448768 |
Aircraft data communication employing existing voice channels |
Sep. 5, 1995 |
| 5373265 |
Modulator having oscillator for generating IF and RF signals by division and up-conversion |
Dec. 13, 1994 |
| 5355523 |
Wireless transmission/reception system including transmitting terminal producing multiple frequency local oscillation signals and receiving terminal storing a local oscillation signal |
Oct. 11, 1994 |
| 5249202 |
Radio communication |
Sep. 28, 1993 |
| 5214397 |
Modulator using low-pass filter as delay element |
May. 25, 1993 |
| 5200715 |
Waveform modulation and demodulation methods and apparatus |
Apr. 6, 1993 |
| 5179588 |
Improved page party system |
Jan. 12, 1993 |
| 5159703 |
Silent subliminal presentation system |
Oct. 27, 1992 |
| 5153536 |
Suppressed carrier modulator formed from two partial modulators each including a phase delay path |
Oct. 6, 1992 |
| 5134630 |
Method and apparatus for transparent tone-in-band transmitter, receiver and system processing |
Jul. 28, 1992 |
| 5077542 |
Transmission system with suppressed carrier signal amplitude modulation preserving the polarity of the transmitted signal, and corresponding transmitter and receiver |
Dec. 31, 1991 |
| 4802191 |
Data transmission using a transparent tone-in band system |
Jan. 31, 1989 |
| 4726069 |
A muiti-mode modulation and demodulation system and method |
Feb. 16, 1988 |
| 4710814 |
Television sound receiving circuit for at least one sound channel contained in an RF signal |
Dec. 1, 1987 |
| 4633484 |
Receiver unit in radio communication system |
Dec. 30, 1986 |
| 4618996 |
Dual pilot phase lock loop for radio frequency transmission |
Oct. 21, 1986 |
| 4490689 |
Balanced modulator using logic gates for DSBSC output |
Dec. 25, 1984 |
| 4398062 |
Apparatus for privacy transmission in system having bandwidth constraint |
Aug. 9, 1983 |
| 4310920 |
Single sideband AM-FM stereo modulation system |
Jan. 12, 1982 |
| 4241451 |
Single sideband signal demodulator |
Dec. 23, 1980 |
| 4217661 |
Audio signal transmission system and method incorporating automatic frequency correction |
Aug. 12, 1980 |
| 4184117 |
Communication security method and system |
Jan. 15, 1980 |
| 4179658 |
Secret-signalling system utilizing noise communication |
Dec. 18, 1979 |
| 4100376 |
Pilot tone demodulator |
Jul. 11, 1978 |
| 4034296 |
Omni-frequency pilot system |
Jul. 5, 1977 |
| 3986122 |
Reliable communications system |
Oct. 12, 1976 |
| 3983484 |
Multichannel signal transmitting and receiving apparatus |
Sep. 28, 1976 |
| 3970937 |
Modem for a suppressed carrier communications system |
Jul. 20, 1976 |
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