公开(公告)号：US20070101816A1

公开(公告)日：2007-05-10

申请号：US11266854

申请日：2005-11-04

申请人： John Cuffe ,  Klaus-Peter Busch ,  Scott Herbster

发明人： John Cuffe ,  Klaus-Peter Busch ,  Scott Herbster

IPC分类号： G01N29/00

CPC分类号： G01N29/44 ,  G01N29/36 ,  G01N2291/02854 ,  H03M1/1235

摘要： The apparatus and method of the present invention provides a plurality of linear amplifiers simultaneously processing an ultrasonic signal. Each amplifier of the plurality of linear amplifiers has a predetermined gain level suitable for achieving the desired output signal level for input to an analog to digital (A/D) converter for processing. The output of each amplifier is sampled by each respective A/D converter at a very high frequency to convert the analog signal output of each of the linear amplifiers to a digital signal. Logic circuits simultaneously monitor all of the output digital signals from the A/D converters. The logic circuits determine which output of the A/D converters has the greatest linear output and stores the selected output in a memory storage device. The saved output waveforms are subsequently combined into a continuous linear digital output that has a dynamic response range that is approximately the sum of the individual dynamic response ranges of the individual amplifiers and A/D converters. The combined continuous linear digital output waveform may be input to a logarithmic conversion to produce a waveform having a wide dynamic range.

摘要翻译： 本发明的装置和方法提供了同时处理超声波信号的多个线性放大器。 多个线性放大器的每个放大器具有适于实现用于输入到模数转换器（A / D）转换器进行处理的所需输出信号电平的预定增益电平。 每个放大器的输出以非常高的频率由每个相应的A / D转换器采样，以将每个线性放大器的模拟信号输出转换为数字信号。 逻辑电路同时监视来自A / D转换器的所有输出数字信号。 逻辑电路确定A / D转换器的哪个输出具有最大的线性输出，并将选择的输出存储在存储器存储装置中。 保存的输出波形随后被组合成连续的线性数字输出，其具有大约是各个放大器和A / D转换器的各个动态响应范围之和的动态响应范围。 组合的连续线性数字输出波形可以输入到对数转换以产生具有宽动态范围的波形。