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1. 发明申请

US20080297381A1 METHODS OF USING PREDICTIVE ANALOG TO DIGITAL CONVERTERS 失效
标题翻译：使用预测模拟数字转换器的方法
公开(公告)号：US20080297381A1
公开(公告)日：2008-12-04
申请号：US12143708
申请日：2008-06-20
申请人： KENT KERNAHAN , XUECHENG JIN , PING LO , ION E. OPRIS , SORIN ANDREI SPANOCHE
发明人： KENT KERNAHAN , XUECHENG JIN , PING LO , ION E. OPRIS , SORIN ANDREI SPANOCHE
IPC分类号： H03M7/00
CPC分类号： H03M1/38
摘要： Methods and devices are disclosed for performing analog to digital signal conversion in shorter time and/or with less power consumption than that of a comparable analog to digital conversion that uses a conventional sequential approximation method based on a binary search. In one embodiment, a predictive guess is supplied as a digital first signal. The digital first signal is converted (D/A) to a counterpart, analog guess signal. A comparison is made between the analog guess signal and a received, analog input sample signal. The result of the comparison is used to improve on the initially supplied guess in a next cycle. Fewer cycles and less power is consumed if the initial guess is within a certain range of the actual magnitude of the analog input sample signal. In one embodiment, a digital modeler is used to model a process underlying the analog input sample signal and to thereby provide fairly good guesses.
摘要翻译：公开了用于在较短时间内和/或具有比使用基于二进制搜索的常规顺序近似方法的可比较模数转换的功耗更少的时间和/或执行模数转换的方法和装置。在一个实施例中，预测猜测被提供为数字第一信号。数字第一信号被转换（D / A）到对应的模拟猜测信号。比较模拟猜测信号和接收的模拟输入采样信号。比较结果用于在下一个周期中提高初始提供的猜测。如果初始猜测在模拟输入采样信号的实际幅度的一定范围内，则消耗更少的周期和更少的功率。在一个实施例中，数字建模器用于对模拟输入采样信号的过程进行建模，从而提供相当好的猜测。

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