Pulse or digital communications – Systems using alternating or pulsating current
Reexamination Certificate
2006-06-13
2006-06-13
Chin, Stephen (Department: 2634)
Pulse or digital communications
Systems using alternating or pulsating current
C375S233000, C455S066100, C380S266000
Reexamination Certificate
active
07061985
ABSTRACT:
A modulation/demodulation device capable of operating with several types of modulation using different carrier frequencies may include a modulator which modulates at least one signal by a signal of a predetermined duration and representative of a binary information supplied by a microprocessor. The device may also include a demodulator which demodulates the modulated signals arriving from a remote site. This may be done by determining the type of modulation of the received signals and their carrier frequency (or frequencies), supplying signals from an analysis of the signals received according to the determined type of modulation, and detecting the signals of determined duration representative of binary information to make them accessible to the microprocessor.
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Allen Dyer Doppelt Milbrath & Gilchrist, P.A.
Chin Stephen
Jorgenson Lisa K.
STMicroelectronics SA
Ware Cicely
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