US PATENT SUBCLASS 455 / 188.1
.~.~ Band 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}
188.1.~.~ Band selection {4}
188.2  DF  .~.~.~> UHF and VHF
189.1  DF  .~.~.~> With plural separate mixer or converter circuits
190.1  DF  .~.~.~> With frequency conversion
191.1  DF  .~.~.~> With plurality of tuned circuits {2}

DEFINITION

Classification: 455/188.1

Band selection:

(under subclass 150.1) Subject matter including means for selecting ranges of radio frequencies lying between specified sets of limits, each range including one or more carrier wave channels.

SEE OR SEARCH THIS CLASS, SUBCLASS:

77+, for transceiver tuning which may include band selection means.

168.1, for multiband frequency scanning receivers which may include band selection means.

176.1, for mechanical or electromechanical frequency selection receivers combined with band selection.

180.1, for channel or station selection receivers combined with band selection.

SEE OR SEARCH CLASS 324, Electricity: Measuring and Testing,

76.39+, for frequency measuring systems which may include band changing or selection means.

334, Tuners, appropriate subclasses for tuners with band selection or changing means.

342, Communications: Directive Radio Wave Systems and Devices (e.g., Radar, Radio Navigation),

350+, for directive radio energy receivers which may include band selection means.

348, Television,

570, and 731+ for TV tuning receivers which may include band selection means.

370, Multiplex Communications, appropriate subclass for multiplex receivers which may include band selection means.