US PATENT SUBCLASS 359 / 264
.~.~.~.~ Pulse modulation

Current as of: June, 1999
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359 /   HD   OPTICS: SYSTEMS (INCLUDING COMMUNICATION) AND ELEMENTS

237  DF  OPTICAL MODULATOR {3}
238  DF  .~ Light wave temporal modulation (e.g., frequency, amplitude, etc.) {3}
240  DF  .~.~ Changing bulk optical parameter {5}
245  DF  .~.~.~ Electro-optic {11}
264.~.~.~.~ Pulse modulation

DEFINITION

Classification: 359/264

Pulse Modulation:

(under subclass 245) Subject matter wherein a parameter of a

train of optical pulses is varied in accordance with the amplitude of the applied signal.

(1) Note. Pulse modulation may involve changes in pulse amplitude (pam), pulse position (ppm), or pulse duration (pdm).

(2) Note. Pulse modulation includes pulse-code modulation wherein the light beam is transmitted as a digital binary code.

(3) Note. This subclass will include a combination of pulse modulation with amplitude, frequency, or phase modulation.