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    • 2. 发明申请
    • TRANSMISSION CONFIGURATION FOR TRANSMITTING SIGNALS AND D/A CONVERTER CIRCUITS THEREFOR
    • 传输系统信号和d / A转换器电路传输为此
    • WO2004051860A3
    • 2004-09-02
    • PCT/AT0300355
    • 2003-11-27
    • SCHINDLER VOLKER
    • SCHINDLER VOLKER
    • H03M1/68H03M1/82H03M3/00G08C19/02
    • H03M1/68H03M1/822H03M3/358H03M3/506H03M7/3026
    • The invention relates to a transmission configuration for transmitting signals, particularly measurement or control signals in analog form, comprising a direct current (DC) D/A converter circuit (12') for a DC useful signal. Said D/A converter circuit contains an input memory, e.g. a register (23), a digital modulator, particularly a sigma-delta modulator (57) and an analog low-pass (25'). The transmission configuration also comprises an alternating current (AC) D/A converter circuit (13') for a modulated AC modem signal that contains a digital pulse-width modulator (62) and an analog filter (33'). In the DC D/A converter circuit (12'), a digital low-pass filter (47) is assigned to the digital modulator and in the AC D/A converter circuit (13'), an analog adder (63) is connected down from the pulse-width modulator (62) that converts the modem signal into a 1 bit signal. Another signal to be added, e.g. a direct current signal that is activated during the quiescent state, an MSB signal or a clock signal, is fed to said analog adder.
    • 为模拟形式用于DC-用户信号,输入存储器,例如发送信号,在特定的测量和控制信号,以直流(DC)d / A转换器电路(12“)的传动装置 一个寄存器(23),数字调制器,特别是Σ-Δ调制器(57),以及模拟低通(25 '),以及与交流电(AC)d / A转换电路(13' 用于调制的AC调制解调信号), 其包括数字脉宽调制器(62)和模拟滤波器(33'); 在DC-d / A转换电路(12“)的数字低通滤波器(47)被分配到数字调制器,在AC-d / A转换电路(13”)是脉冲宽度调制器(62)中,调制解调器信号转换成 1位信号将下游的模拟加法器(63)转换为另一个要加总的信号,例如 在空闲DC信号期间被激活,提供MSB信号或时钟信号。