Patent ID: 8315379
Filing Date: 2012-11-20
Classification: H04B,H04M

Abstract:
1. A single-transducer full duplex circuit, comprising: connecting terminals for connecting to an external digital circuit including an input terminal (D an analog signal processing circuit including: an analog differential output amplifier (A a bridge circuit consisting of first, second, and third resistors (R an analog differential input amplifier (A a digital signal processing circuit including: a signal generator (SG); a first high pass filter (HPF a first multiplier (MUL a second multiplier (MUL an adder (ADD) which adds an output of said first multiplier (MUL a first signal delayer and power calculator (DL a second signal delayer and power calculator (DL a delayed signal memory (X a transfer function identification filter (FIL a first filter coefficient memory (H a second high pass filter (HPF a fourth signal delayer (DL a subtracter (SUB) which subtracts an output of said transfer function identification filter (FIL a fourth multiplier (MUL a third signal delayer and power calculator (DL an equalization filter (FIL a second filter coefficient memory which stores a filter coefficient (H wherein the transmission output terminal (D