Patent ID: 7436263
Filing Date: 2008-10-14
Classification: H04L

Abstract:
1. A signal generating apparatus for presenting an output signal at an output locus; said output signal being modulated by at least one characteristic of an input signal received at an input locus; said output signal having an extant frequency; said extant frequency being selected from a plurality of predetermined frequencies to indicate said at least one characteristic; the apparatus comprising: (a) a signal source; said signal source providing a reference signal at a reference frequency; (b) a frequency comparing unit coupled with said signal source and coupled with said output locus; said frequency comparing unit comparing a presently extant frequency of said output signal with said reference frequency; said frequency comparing unit generating at least one indicator value representing a result of said comparing; (c) a plurality of value storing units coupled with said frequency comparing unit; each respective value storing unit of said plurality of value storing units responding to a respective indicator value of said at least one indicator value to store a respective frequency-related parameter associated with a respective predetermined frequency of said plurality of predetermined frequencies; (d) a selection unit coupled with said plurality of value storing units and coupled with said input locus; and (e) a signal controlled oscillator unit coupled with said selection unit and coupled with said output locus; said selection unit responding to said at least one characteristic to couple a selected said respective value storing unit with said signal controlled oscillator unit as a connected value storing unit; said connected value storing unit providing a respective said frequency-related parameter to said signal controlled oscillating unit for effecting said modulation.