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    • 3. 发明授权
    • System and method for providing high performance quantizer processing
    • 提供高性能量化器处理的系统和方法
    • US06931358B2
    • 2005-08-16
    • US10270817
    • 2002-10-14
    • Daniel A. TazartesPeter KyriacouShaw-Wen FannJames G. Marsden
    • Daniel A. TazartesPeter KyriacouShaw-Wen FannJames G. Marsden
    • G01C21/16H03F1/26
    • G01C21/16
    • A system and method for performing high performance quantizer processing of sensor data in a multiple-channel quantizer system. A reset prioritization scheme is provided for current sources connected to an integrator in the multiple-channel quantizer for preventing saturation of the various quantizer channels. The reset prioritization scheme determines the channels most in need of a reset to prevent saturation based upon predicted quantizer signals to appear on the channels during the next processing cycle of the quantizer system. This method of controlling the reset processing permits significantly higher acceleration capacity by preventing quantizer channel saturation in system utilizing accelerometers. The quantizer processing method further includes an improved calibration scheme for self-calibrating the various channels in a multiple-channel quantizer to account for multiple sources of error, including quantizer bias, asymmetry between applied positive and negative resets, and voltage scale factor of the quantizer channel in calibration.
    • 一种用于在多通道量化器系统中执行传感器数据的高性能量化器处理的系统和方法。 为连接到多通道量化器中的积分器的电流源提供了复位优先级方案,以防止各种量化器通道的饱和。 复位优先级方案确定最需要复位的通道,以在量化器系统的下一个处理周期期间基于预测的量化器信号出现在信道上以防止饱和。 这种控制复位处理的方法通过在利用加速度计的系统中阻止量化器通道饱和来显着提高加速能力。 量化器处理方法还包括改进的校准方案,用于自校准多通道量化器中的各种通道以考虑多个误差源,包括量化器偏置,施加的正负复位之间的不对称性和量化器的电压比例因子 通道校准。