Signal generator

Details Signal generator Signal generator

1986-03-12

1990-04-03

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

370 50, 331 78, H04B 1500, H04K 100

Patent

active

049146742

ABSTRACT:
A signal generator produces a spread-spectrum bandwidth signal in the frequency range 40 to 90 KHz for use in a domestic mains signalling system. In the generator, sixteen individual frequencies, equi-spaced in that range, pass to samplers operating at a clock frequency of 204.8 KHz and then to quantizers before storage. The resultant signals are then assembled in appropriate manner by selector switch before being filtered when (temporarily) in the frequency domain.
The resultant signals duly reach catalogue store, whose output can be used for programming an EPROM in a mains signalling interface unit.

REFERENCES:
patent: 3175212 (1965-03-01), Miller
patent: 3343087 (1967-09-01), Helms
patent: 3500247 (1970-03-01), Sekimoto et al.
patent: 3676598 (1972-11-01), Kurth
patent: 3772681 (1973-11-01), Skingle
patent: 3777277 (1973-12-01), Naber
patent: 3780213 (1973-12-01), Harna
patent: 4355399 (1982-10-01), Timor
patent: 4385381 (1983-05-01), Alexis
patent: 4430736 (1984-02-01), Scholz
patent: 4589018 (1986-05-01), Haskell et al.
patent: 4606041 (1986-08-01), Kadin

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