Signal generator
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United States of America Patent
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-
Apr 3, 1990
Grant Date -
N/A
app pub date -
Mar 12, 1986
filing date -
Mar 15, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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