Patent ID: 6097505
Filing Date: 2000-08-01
Classification: H04N

Abstract:
A communication apparatus comprising:modulating means for modulating digital data of fax format into analog signal and transmitting,a fax apparatus for receiving a signal from said modulating means without resort to telephone circuit,DC feed means for feeding direct current to said fax apparatus,call signal generating means for generating and sending out a call signal to said fax apparatus,first changeover means for selecting whether the telephone circuit or said DC feed means to be connected to said fax apparatus or said demodulating means,second changeover means for controlling the connection of said modulating means and telephone circuit,a circuit having a series of capacitor and resistance connected parallel to said second changeover means,third changeover means for controlling whether or not to skip a direct-current loop forming circuit, andfourth changeover means for controlling the call signal transmitted to said fax apparatus by said call signal generating means.