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    • 44. 发明授权
    • Pulse-width modulating device
    • 脉宽调制装置
    • US5686869A
    • 1997-11-11
    • US694116
    • 1996-08-08
    • Tetsuya NaruseTakehiro SugitaTomoya Yamaura
    • Tetsuya NaruseTakehiro SugitaTomoya Yamaura
    • H03K7/08H03M1/82H04B1/7087H04B14/02H04J13/00H04L25/49H03D3/00H04L27/22
    • H03M1/827H04B14/026H04L25/4902
    • A pulse-width modulating device comprises: a counter for generating a plurality of counter signals of n-bit, where n is an integer of 2 or more; a fundamental waveform generator for outputting a signal for the least significant bit of the count signal as the most significant bit of a fundamental waveform signal, obtaining a first product of inverted signals of all of the count signals for higher order bits than LSB, obtaining a second product of the first product and the count signal for a certain bit, carrying out this for every bit, and outputting n-bit fundamental waveform signals extending from the upper order bits to the lower order bits; and a pulse-width modulator for obtaining a product sum total for each bit of the n-bit data signal and each of the n-bit of fundamental waveform signals corresponding to the each bits of n-bit data and generating a pulse-width modulated signal, configured in such a manner that a pulse-width modulating signal having a pulse-width corresponding to the data signal and having a spectrum of a high frequency can be obtained.
    • 脉冲宽度调制装置包括:计数器,用于产生n位的多个计数器信号,其中n是2或更大的整数; 基本波形发生器,用于将用于计数信号的最低有效位的信号作为基波形信号的最高有效位输出,获得比LSB高的高位的所有计数信号的反相信号的第一乘积,得到 第一产品的第二乘积和某位的计数信号,对每一位进行这一操作,并输出从高阶位到低位的n位基波形信号; 以及脉冲宽度调制器,用于获得n比特数据信号的每个比特的乘积和总和与n比特数据的每个比特对应的n比特基波形信号,并产生脉冲宽度调制 信号,可以获得具有对应于该数据信号并具有高频谱的脉冲宽度的脉冲宽度调制信号。