利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

2 条记录 (耗时 0.012 秒)

    PROCEDE D'AMELIORATION DE LA RESOLUTION ET DE CORRECTION DES DISTORSIONS POUR MODULATEUR SIGMA-DELTA ET MODULATEUR SIGMA-DELTA METTANT EN UVRE LE PROCEDE
    2.
    发明公开
    PROCEDE D'AMELIORATION DE LA RESOLUTION ET DE CORRECTION DES DISTORSIONS POUR MODULATEUR SIGMA-DELTA ET MODULATEUR SIGMA-DELTA METTANT EN UVRE LE PROCEDE 有权
    一种用于改善扭曲的分辨率和校正的Σ-Δ调制器和程序实施的Σ-Δ调制

    公开(公告)号：EP2342828A1

    公开(公告)日：2011-07-13

    申请号：EP09775123.4

    申请日：2009-10-29

    申请人： THALES

    发明人： HODE, Jean-Michel ,  KAMOUN, Leila

    IPC分类号： H03M3/00 ,  H03M3/02

    CPC分类号： H03M3/386 ,  H03M3/344 ,  H03M3/402 ,  H03M3/414

    摘要： The invention relates to a method for improving the resolution and the correction of distortions in a sigma-delta modulator, wherein the modulator (200) converts an analog input signal e(t) into a secondary output digital signal s(t) sampled at a frequency fθ and encoded over NB bits, a second main output digital signal s’(t) represented over NMSB bits being also available at the output. At least three forms of processing are sequentially applied to the two outputs, the first form of processing (201) comprising a demodulation by a frequency f
    0 and an N-factor decimation (202, 203) in an independent manner, the second form of processing (204) comprising an improvement of the resolution and the third form of processing (208) comprising a correction of the distortions, the three forms of processing being carried out after decimation. The invention also relates to a sigma-delta modulator implementing the method of the invention.

    摘要翻译： “（在用于提高分辨率和用于校正失真为Σ-Δ调制器的方法，调制器转换为输入信号模拟成在频率fe采样和编码上NB个比特，第二主输出数字信号s次级输出数字信号 吨）被表示上因此是可在输出NMSB比特。 至少三个处理被连续地施加到所述输出端，一第一处理通过频率f 0和的因子N在独立的方式抽取进行解调，用于执行的分辨率的改进和执行第三处理第二处理的 失真的校正。 这3个处理的被抽取后进行。 Σ-Δ调制器实现该方法。