US PATENT SUBCLASS 455 / 263
.~.~.~.~.~ Discriminator or detector

Current as of: June, 1999
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455 /   HD   TELECOMMUNICATIONS

130  DF  RECEIVER OR ANALOG MODULATED SIGNAL FREQUENCY CONVERTER {24}
230  DF  .~ Local control of receiver operation {7}
255  DF  .~.~ Local oscillator frequency control {2}
257  DF  .~.~.~ Automatic {2}
258  DF  .~.~.~.~ Utilizing particular local oscillator control {4}
263.~.~.~.~.~ Discriminator or detector

DEFINITION

Classification: 455/263

Discriminator or detector:

(under subclass 258) Subject matter wherein the control means comprises a device in which amplitude variations are derived in response to frequency or phase variations.

SEE OR SEARCH CLASS

329, Demodulators, appropriate subclasses for demodulators, per se.

331, Oscillators, particularly

3, 9, 25+, and 32+ for automatic frequency stabilized oscillators with discriminator means.