US PATENT SUBCLASS 327 / 105
.~ Synthesizer

Current as of: June, 1999
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327 /   HD   MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS

100  DF  SIGNAL CONVERTING, SHAPING, OR GENERATING {29}
105.~ Synthesizer {2}
106  DF  .~.~> Having stored waveform data (e.g., in ROM, etc.)
107  DF  .~.~> Having digital device (e.g., logic gate, flip-flop, etc.)

DEFINITION

Classification: 327/105

Synthesizer:

(under subclass 100) Subject matter wherein an output waveform is derived which at any instant is proportional to the combined values of the corresponding instantaneous values of a plurality of input signal waveforms.

SEE OR SEARCH THIS CLASS, SUBCLASS:

3+, for circuits where the output is a function of the phase difference between plural input signal wave forms.

40+, for circuits where the output is a function of the frequency difference between plural input signal wave forms.

129, for miscellaneous sine wave generation.

355+, for circuits where the output signal is a function of a plurality of input signals.

361, for mathematical summing of two or more input signals. SEE OR SEARCH CLASS

84, Music,

600+, for generation of electrical musical tones utilizing synthesizing techniques.

324, Electricity: Measuring and Testing,

77, for systems for analyzing complex electric waves and subclass 140 for measuring and testing circuits which combine plural inputs.

331, Oscillators,

37+, for oscillatory circuits whose output comprises a beat frequency and subclasses 46+ for plural oscillator systems.

332, Modulators, appropriate subclasses for plural wave modulating circuits.

333, Wave Transmission Lines and Networks, appropriate subclasses, especially

20, for passive wave shaping networks.

455, Telecommunications,

313+, for plural wave combining heterodyning systems utilized in radio receivers wherein the output is a beat frequency.