US PATENT SUBCLASS 455 / 197.1
.~.~.~ By simultaneous control with signal selection


Current as of: June, 1999
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455 /   HD   TELECOMMUNICATIONS

130  DF  RECEIVER OR ANALOG MODULATED SIGNAL FREQUENCY CONVERTER {24}
150.1  DF  .~ Signal selection based on frequency (e.g., tuning) {13}
196.1  DF  .~.~ Including variation of local oscillator frequency {1}
197.1.~.~.~ By simultaneous control with signal selection {3}
197.2  DF  .~.~.~.~> Variable capacitor tuned {1}
198.1  DF  .~.~.~.~> Including distributed parameter control device
199.1  DF  .~.~.~.~> Discrete frequency types (e.g., channel switching)


DEFINITION

Classification: 455/197.1

By simultaneous control with signal selection:

(under subclass 196.1) Subject matter in which the local oscillator frequency and the carrier wave frequency are varied by a common actuator.