US PATENT SUBCLASS 455 / 248.1
.~.~.~.~ Constant or controlled input impedance

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}
232.1  DF  .~.~ Gain control {2}
234.1  DF  .~.~.~ Automatic {15}
248.1.~.~.~.~ Constant or controlled input impedance

DEFINITION

Classification: 455/248.1

Constant or controlled input impedance:

(under subclass 234.1) Subject matter wherein the automatic gain control means varies or keeps constant the input impedance of the receiver.