Multicarrier communication apparatus, integrated circuit,...

Details Multicarrier communication apparatus, integrated circuit,... Multicarrier communication apparatus, integrated circuit,...

2011-07-12

2011-07-12

Fan, Chieh M (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S316000, C375S326000

Reexamination Certificate

active

07978772

ABSTRACT:
A digital transmission signal from a digital signal processing unit is converted to an analog signal in an analog circuit, and is transmitted from transmission lines via a communication transformer. The digital signal processing unit includes a time carrier detector that detects a carrier by using a time waveform of a reception signal and a frequency carrier detector that detects a carrier by using frequency characteristics of the reception signal. Under the control of a controller, carrier detection is performed by switching between the time carrier detector and the frequency carrier detector for operation.

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