US PATENT SUBCLASS 329 / 308
.~.~.~ With parallel signal combiners (e.g., Costas loop)

Current as of: June, 1999
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329 /   HD   DEMODULATORS

304  DF  PHASE SHIFT KEYING OR QUADRATURE AMPLITUDE DEMODULATOR {3}
306  DF  .~ Input signal combined with local oscillator or carrier frequency signal {1}
307  DF  .~.~ Including phase or frequency locked loop {1}
308.~.~.~ With parallel signal combiners (e.g., Costas loop) {1}
309  DF  .~.~.~.~> Including logic element (e.g., logic gate or flip-flop)

DEFINITION

Classification: 329/308

With parallel signal combiners (e.g., costas loop):

(under subclass 307) Subject matter utilizing a plurality of signal combiners where the modulated input signal is combined with relatively phase shifted versions of the secondary oscillations, or where the secondary oscillations are combined with relatively phase shifted versions of the modulated input signal.