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公开(公告)号：US09184756B2
公开(公告)日：2015-11-10
申请号：US12941361
申请日：2010-11-08
CPC分类号： H03M1/0614 , H03M1/12 , H03M1/66 , H04B1/001 , H04B1/0035
摘要： Embodiments of the present invention may provide a signal processing circuit that may comprises an analog-to-digital converter (ADC), and an output restriction circuit. The output restriction circuit may reduce the accuracy of the digital output of the ADC when signal content exceeds a pre-determined spectrum mask in an undesirable band. In one embodiment, the input signal spectrum may be actively monitored and when the input spectrum is inconsistent with an intended application, the output resolution may be restricted, for example, by truncating least significant bits (LSBs) of the digital output or adding digital noise.
摘要翻译： 本发明的实施例可以提供可包括模数转换器（ADC）和输出限制电路的信号处理电路。 当信号内容超过不期望的频带中的预定频谱掩模时，输出限制电路可以降低ADC的数字输出的精度。 在一个实施例中，可以主动地监视输入信号频谱，并且当输入频谱与预期应用不一致时，输出分辨率可被限制，例如通过截断数字输出的最低有效位（LSB）或添加数字噪声 。
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公开(公告)号：US20120114077A1
公开(公告)日：2012-05-10
申请号：US12941361
申请日：2010-11-08
CPC分类号： H03M1/0614 , H03M1/12 , H03M1/66 , H04B1/001 , H04B1/0035
摘要： Embodiments of the present invention may provide a signal processing circuit that may comprises an analog-to-digital converter (ADC), and an output restriction circuit. The output restriction circuit may reduce the accuracy of the digital output of the ADC when signal content exceeds a pre-determined spectrum mask in an undesirable band. In one embodiment, the input signal spectrum may be actively monitored and when the input spectrum is inconsistent with an intended application, the output resolution may be restricted, for example, by truncating least significant bits (LSBs) of the digital output or adding digital noise.
摘要翻译： 本发明的实施例可以提供可包括模数转换器（ADC）和输出限制电路的信号处理电路。 当信号内容超过不期望的频带中的预定频谱掩模时，输出限制电路可以降低ADC的数字输出的精度。 在一个实施例中，可以主动地监视输入信号频谱，并且当输入频谱与预期应用不一致时，输出分辨率可被限制，例如通过截断数字输出的最低有效位（LSB）或添加数字噪声 。
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