公开(公告)号：US20090045994A1

公开(公告)日：2009-02-19

申请号：US12192369

申请日：2008-08-15

申请人： Michael DRUMMY ,  Andrew THOMAS ,  Denys LAQUERRE ,  David LAROCHELLE ,  Pierre LANGLOIS ,  Steven BESSER

发明人： Michael DRUMMY ,  Andrew THOMAS ,  Denys LAQUERRE ,  David LAROCHELLE ,  Pierre LANGLOIS ,  Steven BESSER

IPC分类号： H03M1/12

CPC分类号： G01R19/2509 ,  G01N29/262 ,  G01N29/44

摘要： A multiple mode digitization system for a non-destructive inspection instrument which makes use of a multiplexing circuit and a single set of analog to digital converters to efficiently digitize analog test signals from a plurality of inputs. In the preferred embodiment, each of the analog to digital converters in the system is driven with an independent and separate clock signal, allowing for propagation delay compensation among the plurality of test signals as well as interleaved sampling such that custom sampling rates can be used for each input without the need for more than one clock frequency. In an alternate embodiment, phase adjustments on the sampling clocks are used only for interleave sampling, and digital filters are used to provide signal propagation delay compensation.

摘要翻译： 一种用于非破坏性检查仪器的多模式数字化系统，其利用多路复用电路和单组模数转换器来有效地数字化来自多个输入的模拟测试信号。 在优选实施例中，系统中的每个模数转换器都用独立和分离的时钟信号驱动，允许多个测试信号之间的传播延迟补偿以及交错采样，使得定制采样速率可用于 每个输入不需要多于一个时钟频率。 在替代实施例中，采样时钟上的相位调整仅用于交织采样，并且使用数字滤波器来提供信号传播延迟补偿。

公开(公告)号：US20090225083A1

公开(公告)日：2009-09-10

申请号：US12399670

申请日：2009-03-06

申请人： Andrew R. THOMAS ,  Steven BESSER ,  Daniel KASS ,  Erich HENJES ,  Ehab GHABOUR ,  Marc DULAC ,  Paul J. DeANGELO

发明人： Andrew R. THOMAS ,  Steven BESSER ,  Daniel KASS ,  Erich HENJES ,  Ehab GHABOUR ,  Marc DULAC ,  Paul J. DeANGELO

IPC分类号： G06T11/20 ,  G06F15/00

CPC分类号： G01R13/02 ,  G01R13/029 ,  G06K9/00543

摘要： A peak visualization enhancement system for use with a non-destructive inspection (NDI) instrument using a digital display which replicates the haloing effect of analog cathode ray tube (CRT) displays. A peak detection algorithm is provided which intelligently selects the peak values from within the uncompressed digitized waveform while taking measures to prevent noise spikes and the like from being identified as valid waveform peaks. The digital display then highlights the identified peaks, or a subset of the identified peaks, on the compressed waveform display. In this way the effect of bright spots (halos) about the zero slope points on a waveform displayed on an analog CRT is replicated in a digitally compressed waveform display.

摘要翻译： 一种用于使用数字显示器的非破坏性检查（NDI）仪器的峰值可视化增强系统，其复制模拟阴极射线管（CRT）显示器的晕圈效应。 提供了一种峰值检测算法，其在采取措施以防止噪声尖峰等被识别为有效波形峰值的情况下智能地从未压缩的数字化波形内选择峰值。 然后，数字显示器会在压缩波形显示屏上突出显示所识别的峰值或所识别峰值的子集。 以这种方式，在数字压缩的波形显示中复制了在模拟CRT上显示的波形上零点斜率点上的亮点（光晕）的影响。