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    • 10. 发明专利
    • D/a converter
    • D / A转换器
    • JP2003283338A
    • 2003-10-03
    • JP2002084004
    • 2002-03-25
    • Mitsubishi Electric Corp三菱電機株式会社
    • OKI MASAJI
    • H03K5/26H03M3/02H03M3/04
    • H03M3/50H03M3/346H03M3/506
    • PROBLEM TO BE SOLVED: To provide a D/A converter, which switches an input sampling frequency by itself to reduce the load of a control means equipped externally.
      SOLUTION: The D/A converter is equipped with a fs detecting means 8 for detecting a sampling frequency fs of digital data using a sampling clock LRCK and a master clock xfso, an over-sampling digital filter 3 for conducting over-sampling for digital data based on an input sampling frequency fs, a fs change detecting means 9 for detecting changes in the input sampling frequency fs, and a mute control means 7 for muting data to be D/A converted based on the detected result by the fs change detecting means 9.
      COPYRIGHT: (C)2004,JPO
    • 要解决的问题:提供一种D / A转换器,其自身切换输入采样频率以减少外部配备的控制装置的负载。 解决方案:D / A转换器配备有fs检测装置8,用于使用采样时钟LRCK和主时钟xfso检测数字数据的采样频率fs,用于进行过采样的过采样数字滤波器3 用于基于输入采样频率fs的数字数据,用于检测输入采样频率fs的变化的fs变化检测装置9以及用于根据fs的检测结果使数据变为D / A转换的静音控制装置7 变更检测装置9.版权所有(C)2004,JPO