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METHOD FOR REDUCING DISTORTION OF DIGITAL DATA SIGNAL BY POTS CALL SIGNAL, AND TELEPHONE CALL SIGNAL GENERATOR RELATING THERETO
METHOD FOR REDUCING DISTORTION OF DIGITAL DATA SIGNAL BY POTS CALL SIGNAL, AND TELEPHONE CALL SIGNAL GENERATOR RELATING THERETO
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机译:通过点呼叫信号减少数字数据信号失真的方法,以及与之相关的电话呼叫信号发生器
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摘要
PROBLEM TO BE SOLVED: To provide a method and device that can reduce distortion of digital data by a POTS(Plain Old Telephone service) cal signal of a phone signal sent at the same time when the digital data are sent through a single line.;SOLUTION: In order to reduce distortion of digital data due to on/off switching of a call by a signal (RINGING 1, RINGING 2) of a plain old telephone service(POTS) sent through a single line (LINE) at the same time when the data are sent, the phone call signal generator (POT-RING GENERATOR 1, POTS RING GENERATOR 2) generates a digital data friendly call signal. The telephone call signal generator applies a transient smoothing window (WIN DOW 1, WINDOW 2) to a sing waveform signal or a cosine waveform signal (SINE 1, SINE 2).;COPYRIGHT: (C)2001,JPO
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