Pulse or digital communications – Transmitters – Antinoise or distortion
Patent
1995-11-14
1999-05-25
Pham, Chi H.
Pulse or digital communications
Transmitters
Antinoise or distortion
370202, 375377, 375271, 455 43, H04K 2730
Patent
active
059075848
ABSTRACT:
The system and method of the present invention include a modulator which encodes data on a communication signal using angle modulation. The demodulator, receiving the angle modulated communication signal, angle demodulates the angle modulated communication signal to obtain the data. In this manner, separate frequency bands are not required to transmit both the communication signal and the data. The bandwidth of the transmission from the modulator is reduced to the frequency band of the angle modulated communication signal. Additionally, since angle modulations of an audio signal are inaudible to a listener, when the communication signal is an audio signal, the angle modulated audio signal may be directly output to a listener at the demodulator. A multitude of applications exist for the present invention including Lincompex communication. In Lincompex communication, a Lincompex compressor compresses the communication signal based on the envelope thereof, and outputs a control tone representative of the envelope. The system and method of the present invention treats the control tone as the data, and encodes the control tone on the compressed communication signal through angle modulation. The demodulator angle demodulates the angle modulated compressed communication signal to obtain the control tone, and expands the angle modulated compressed communication signal based on the control tone.
REFERENCES:
patent: 4123711 (1978-10-01), Chow
patent: 4271499 (1981-06-01), Leveque
patent: 4907217 (1990-03-01), Leveque
patent: 5058202 (1991-10-01), Leveque
patent: 5065451 (1991-11-01), Leveque
patent: 5095539 (1992-03-01), Leveque
patent: 5454010 (1995-09-01), Leveque
patent: 5495468 (1996-02-01), Leveque
Link Plus Corporation
Pham Chi H.
Webster Bryan
LandOfFree
System and method for transmitting and receiving a Lincompex sig does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for transmitting and receiving a Lincompex sig, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for transmitting and receiving a Lincompex sig will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-405976