.~ Input signal combined with local oscillator or carrier frequency signal
DEFINITION
Classification: 329/346
Input signal combined with local oscillator or carrier frequency signal:
(under subclass 345) Subject matter where the modulated signal input to the demodulator interacts therein with oscillations from a secondary source.
(1) Note. The secondary oscillations may be internally generated or externally supplied and may be at a frequency other than that of the modulated input signal's carrier.
SEE OR SEARCH THIS CLASS, SUBCLASS:
302, for similar structure in a frequency shift keying or minimum shift keying demodulator.
306+, for similar structure in a phase shift keying or quadrature amplitude demodulator.
323+, for similar structure in a frequency modulation demodulator.
358+, for similar structure in an amplitude modulation demodulator.
SEE OR SEARCH CLASS 455, Telecommunications,
208+, for a synchronized or controlled local oscillator in a phase modulation receiver and subclasses 255+ for generic local oscillator frequency control in a receiver.
