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    • 31. 发明授权
    • Systems and methods for reduced format data processing
    • 用于缩小格式数据处理的系统和方法
    • US08325433B2
    • 2012-12-04
    • US13009067
    • 2011-01-19
    • Xun ZhangJeffrey GrundvigViswanath Annampedu
    • Xun ZhangJeffrey GrundvigViswanath Annampedu
    • G11B20/10
    • G11B20/10037G11B20/10027G11B20/10222G11B20/14G11B2020/1232G11B2020/1267G11B2220/2516
    • Various embodiments of the present invention provide systems and methods for data processing. For example, some embodiments of the present invention provide data processing circuits that include a variable gain amplifier circuit, an analog to digital conversion circuit, a cosine component calculation circuit, a sine calculation circuit, and a zero gain start calculation circuit. The variable gain amplifier circuit is operable to apply a gain to a data input corresponding to a gain feedback value and providing an amplified output. The analog to digital conversion circuit is operable to convert the amplified output to a corresponding series of digital samples. The cosine component calculation circuit is operable to calculate a cosine component from the series of digital samples, and the sine component calculation circuit operable to calculate a sine component from the series of digital samples. The zero gain start calculation circuit is operable to calculate a raw gain error value based on the cosine component and the sine component, where the gain feedback value is derived from the raw gain error value.
    • 本发明的各种实施例提供了用于数据处理的系统和方法。 例如,本发明的一些实施例提供包括可变增益放大器电路,模数转换电路,余弦分量计算电路,正弦计算电路和零增益开始计算电路的数据处理电路。 可变增益放大器电路可操作以将增益应用于对应于增益反馈值的数据输入并提供放大的输出。 模数转换电路可操作以将放大的输出转换成相应的一系列数字采样。 余弦分量计算电路可操作以从该系列数字采样中计算余弦分量,并且正弦分量计算电路用于从该系列数字样本计算正弦分量。 零增益开始计算电路可操作以基于余弦分量和正弦分量来计算原始增益误差值,其中增益反馈值从原始增益误差值导出。