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21. 发明申请

US20110282610A1 DENSITY TRACE MEASUREMENT AND TRIGGERING IN FREQUENCY DOMAIN BITMAPS 有权
标题翻译：频率跟踪测量和频率域名中的触发
公开(公告)号：US20110282610A1
公开(公告)日：2011-11-17
申请号：US12778730
申请日：2010-05-12
申请人： KATHRYN A. ENGHOLM , ALFRED K. HILLMAN, JR. , JOHN F. TURPIN , DAVID H. EBY
发明人： KATHRYN A. ENGHOLM , ALFRED K. HILLMAN, JR. , JOHN F. TURPIN , DAVID H. EBY
IPC分类号： G06F19/00 , G01R13/02
CPC分类号： G01R23/18 , G01R13/0254
摘要： A “density trace” according to an embodiment of the present invention is formed by measuring the density of each column of a frequency domain bitmap above a user-specified “amplitude threshold.” The density of each column equals the sum of the densities of all of the pixels in the column that are above the amplitude threshold divided by the sum of the densities of all of the pixels in the column. A density trace provides a convenient way to define and represent the occupancy for a large number of columns, and also allows density data to be quickly transmitted from one instrument or computer to another. In some embodiments, a density trace is incorporated into a trigger detector of a test and measurement instrument and used to generate a trigger signal. The trigger detector compares the density trace to a user-specified “density threshold” and generates the trigger signal when the value of any point of the density trace violates the density threshold.
摘要翻译：根据本发明实施例的“密度迹线”是通过测量频域位图的每列的密度高于用户指定的“振幅阈值”来形成的。每列的密度等于所有密度的总和高于振幅阈值的列中的像素除以列中所有像素的密度的总和。密度跟踪提供了一种方便的方法来定义和表示大量列的占用，并且还可以将密度数据从一个仪器或计算机快速传输到另一个仪器。在一些实施例中，将密度迹线并入到测试和测量仪器的触发检测器中，并用于产生触发信号。触发检测器将密度跟踪与用户指定的“密度阈值”进行比较，并且当密度跟踪的任何点的值超过密度阈值时，触发信号产生触发信号。

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