US PATENT SUBCLASS 329 / 311
PULSE OR INTERRUPTED CONTINUOUS WAVE DEMODULATOR


Current as of: June, 1999
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329 /   HD   DEMODULATORS

311PULSE OR INTERRUPTED CONTINUOUS WAVE DEMODULATOR {2}
312  DF  .~> Pulse width demodulator
313  DF  .~> Pulse position, frequency, phase or spacing demodulator {1}


DEFINITION

Classification: 329/311

PULSE OR INTERRUPTED CONTINUOUS WAVE DEMODULATOR:

(under the class definition) Subject matter where the demodulator extracts the modulating signal from a modulated signal which has undergone pulse modulation.

(1) Note. Pulse modulation occurs when a repetitious pulse wave has a characteristic varied in accordance with the modulating signal.

(2) Note. Interrupted continuous wave modulation occurs when a pulsed continuous wave has a characteristic varied in accordance with the modulating signal.

(3) Note. Examples of pulse waves are square waves, sawtooth waves, and trapezoidal waves.

(4) Note. Comparable structure having an input which is pulse code modulated (PCM) or delta modulated are found elsewhere. See the Search Notes below.

(5) Note. This subclass includes pulse demodulators, per se. See the SEARCH CLASS notes below for combinations with the subject matter of this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

315+, for a frequency modulation demodulator. 341+, for an FM demodulator which initially transforms the

input signal into pulses.

345+, for a phase modulation demodulator.

347+, for an amplitude modulation demodulator.

SEE OR SEARCH CLASS

341, Coded Data Generation or Conversion,

126+, or 143 for a structure comparable structure to this subclass (311) having an input which is pulse code modulated (PCM) or delta modulated.

375, Pulse or Digital Communications, appropriate subclasses, for combinations of a pulse demodulator with receiving structure.