Modem for pseudo noise communication on A.C. lines

Details Modem for pseudo noise communication on A.C. lines Modem for pseudo noise communication on A.C. lines

1984-06-20

1989-05-30

Olms, Douglas W.

Communications: electrical

Systems

Selsyn type

340310R, 375 1, H04M 1104, H04B 1500

Patent

active

048355178

ABSTRACT:
A modem which may operate as a transmitter or receiver, is provided for use on a line carrying an A.C. signal. The modem comprises a pseudorandom code generator which produces a pseudorandom code signal of a frequency an integral multiple of the A.C. signal frequency. Synchronization means synchronizes the code signal with the A.C. signal. Preferably a coherent system is provided in which a data signal involved has a bit rate an integral multiple of the A.C. signal frequency and in which a carrier generator is additionally provided to produce a carrier signal of a frequency an integral multiple of the A.C. signal frequency. In such case, the synchronization means also synchronizes the data bit and carrier signals with the A.C. signal.

REFERENCES:
patent: 4328482 (1984-05-01), Belcher et al.
patent: 4367455 (1983-01-01), Fried
patent: 4377804 (1983-03-01), Suzuki
patent: 4382297 (1983-05-01), Farrow
patent: 4400688 (1983-08-01), Johnston et al.
patent: 4583073 (1986-04-01), Stolowicki
patent: 4599732 (1986-07-01), LeFever
patent: 4641322 (1987-02-01), Hasegawa
H. Ochsner, "Data Transmission on Low Voltage Power Distribution Lines Using Spread Spectrum Techniques", Proc. Canadian Commun. and Power Conf. (IEEE), Montreal, Quebec, Oct. 15-17, 1980, pp. 236-239.
R. C. Dixon, Spread Spectrum Systems, Wiley & Sons, New York (1976), Chapt. 6.
S. E. Sarns, "Build This Home Control Computer", Radio-Electronics, pp. 64-69; 74; 110, May 1984.
L. Curran, "How to Turn AC Lines into Phone Lines", Electronics, Jul. 20, 1978, p. 155.
"Electronics Newsletter", Electronics, Jun. 22, 1978, p. 34.

Affiliated with

Also associated with

Rating

Modem for pseudo noise communication on A.C. lines does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Modem for pseudo noise communication on A.C. lines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modem for pseudo noise communication on A.C. lines will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2155957