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1. 发明授权

US07911368B2 Sample error minimization for high dynamic range digitization systems 有权
标题翻译：高动态范围数字化系统的采样误差最小化
公开(公告)号：US07911368B2
公开(公告)日：2011-03-22
申请号：US12605769
申请日：2009-10-26
申请人： Andrew Robert Thomas , Michael Drummy
发明人： Andrew Robert Thomas , Michael Drummy
IPC分类号： H03M1/12
CPC分类号： H03M1/188
摘要： A blending circuit is disclosed to be operable to combine plurality of digital outputs received from an analog to digital conversion system to create a composite digital signal. The analog to digital conversion system receives analog signals originated from multiple but substantially the same source signals, wherein the source signals being scaled to different degrees. A blending circuit deploys a blending factor to combine the digital outputs in a manner which blends and/or adjusts portion of each digital output being used to avoid over-flown portion of the digital outputs and to minimize phase and/or amplitude discontinuity of the composite digital signal.
摘要翻译：公开了一种混合电路，用于组合从模数转换系统接收的多个数字输出以产生复合数字信号。模数转换系统接收源自多个但基本上相同的源信号的模拟信号，其中源信号被缩放到不同程度。混合电路部署混合因子以混合和/或调整每个数字输出部分的方式组合数字输出，以避免数字输出的过度流动部分，并最小化复合材料的相位和/或振幅不连续性数字信号。

2. 发明授权

US08001842B2 Ultrasonic fault detection system using a high dynamic range analog to digital conversion system 有权
公开(公告)号：US08001842B2
公开(公告)日：2011-08-23
申请号：US12411088
申请日：2009-03-25
申请人： Andrew Robert Thomas
发明人： Andrew Robert Thomas
IPC分类号： G01N29/04
CPC分类号： G01N29/44 , G01N29/043 , G01N29/262 , G01N29/42 , G01N29/4463 , G01N2291/044 , G01N2291/102 , H03M1/188
摘要： A method and apparatus for effecting ultrasonic flaw detection of an object processes an echo signal received from the object being tested in at least three signal channels, wherein the echo signal is scaled to different degrees along each channel to increase and extend the dynamic range of an associated A/D converter system, in a manner which dispenses with the need for using numerous analog high pass and low pass filters and a variable gain amplifier. This reduces complexity and avoids performance limitations. The digital to analog converters sample the differently scaled input signal and a selection circuit selects the output of the digital output obtained from that analog to digital converter which has the highest gain, but which has not overflowed. The digital outputs are seamlessly merged to produce an output that can be displayed as a scan display which shows the location of faults.

3. 发明授权

US07963166B2 Ultrasonic fault detection system using a high dynamic range analog to digital conversion system 有权
标题翻译：超声波故障检测系统采用高动态范围的模数转换系统
公开(公告)号：US07963166B2
公开(公告)日：2011-06-21
申请号：US12410922
申请日：2009-03-25
申请人： Andrew Robert Thomas
发明人： Andrew Robert Thomas
IPC分类号： G01N29/04
CPC分类号： G01N29/44 , G01N29/043 , G01N29/262 , G01N29/42 , G01N29/4463 , G01N2291/044 , G01N2291/102 , H03M1/188
摘要： A method and apparatus for effecting ultrasonic flaw detection of an object processes an echo signal received from the object being tested in at least three signal channels, wherein the echo signal is scaled to different degrees along each channel to increase and extend the dynamic range of an associated A/D converter system, in a manner which dispenses with the need for using numerous analog high pass and low pass filters and a variable gain amplifier. This reduces complexity and avoids performance limitations. The digital to analog converters sample the differently scaled input signal and a selection circuit selects the output of the digital output obtained from that analog to digital converter which has the highest gain, but which has not overflowed. The digital outputs are seamlessly merged to produce an output that can be displayed as a scan display which shows the location of faults.
摘要翻译：用于实现物体的超声波探伤的方法和装置处理在至少三个信号通道中从被测试对象接收的回波信号，其中回波信号沿着每个通道被缩放到不同程度，以增加和扩展一个相关的A / D转换器系统，其不需要使用大量模拟高通和低通滤波器和可变增益放大器。这降低了复杂性并避免了性能限制。数模转换器对不同比例的输入信号进行采样，并且选择电路选择从具有最高增益但尚未溢出的模数转换器获得的数字输出的输出。数字输出无缝合并，产生可显示为显示故障位置的扫描显示的输出。

4. 发明申请

US20100103016A1 SAMPLE ERROR MINIMIZATION FOR HIGH DYNAMIC RANGE DIGITIZATION SYSTEMS 有权
标题翻译：高动态范围数字化系统的样本误差最小化
公开(公告)号：US20100103016A1
公开(公告)日：2010-04-29
申请号：US12605769
申请日：2009-10-26
申请人： Andrew Robert THOMAS , Michael DRUMMY
发明人： Andrew Robert THOMAS , Michael DRUMMY
IPC分类号： H03M1/12
CPC分类号： H03M1/188
摘要： A blending circuit is disclosed to be operable to combine plurality of digital outputs received from an analog to digital conversion system to create a composite digital signal. The analog to digital conversion system receives analog signals originated from multiple but substantially the same source signals, wherein the source signals being scaled to different degrees. A blending circuit deploys a blending factor to combine the digital outputs in a manner which blends and/or adjusts portion of each digital output being used to avoid over-flown portion of the digital outputs and to minimize phase and/or amplitude discontinuity of the composite digital signal.
摘要翻译：公开了一种混合电路，用于组合从模数转换系统接收的多个数字输出以产生复合数字信号。模数转换系统接收源自多个但基本上相同的源信号的模拟信号，其中源信号被缩放到不同程度。混合电路部署混合因子以混合和/或调整每个数字输出部分的方式组合数字输出，以避免数字输出的过度流动部分，并最小化复合材料的相位和/或振幅不连续性数字信号。

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