Mobile communication terminal device

Details Mobile communication terminal device Mobile communication terminal device

H - Electricity

04

W

H04W 88/02 (2009.01) H04H 40/27 (2009.01) H03M 1/00 (2006.01) H04M 1/725 (2006.01)

Patent

CA 2324817

A mobile communication terminal device comprises: an A/D converter 101 for converting a transmitting analog signal into a transmitting digital signal, a digital filter 109 for applying a decimation process to a first output of a multiplexer 111 to send out to an outside if the first output is an output of the A/D converter 101 and for applying an interpolation process to a second output of a multiplexer 112 if the first output is an R-ch audio digital signal whereby the first output and the second output can be processed on time- division basis, a D/A converter 104 for converting the R-ch audio digital signal which is subjected to the interpolation process by the digital filter 109 into an analog signal, and a D/A converter 103 for converting any one of an L-ch audio digital signal and a receiving digital signal which are subjected to the interpolation process by the digital filter 109 into the analog signal.

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