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专利名称：Automatic generation of frequency domain
mask
发明人：Dees, Ian S.,Bryant, Craig D.,Fitzsimmons,
Lynne A.
申请号：EP08105978.4申请日：20081212公开号：EP2071341A2公开日：20090617
专利附图：
摘要：Automatic generation of a frequency domain mask is achieved by drawing areduced waveform representing frequency domain data for an input signal as a pixel map.
The reduced waveform is blurred by applying a user selected frequency offset, and fromthe blurred waveform data points are selected to generate upper and lower limits. Theselected upper limit data points form an upper limit mask and the lower limit data pointsform a lower limit mask. When the upper and lower limit data masks are combined andtranslated back to frequency/amplitude units from the pixel map, they form an envelopemask.
申请人：TEKTRONIX, INC.
地址：14200 S.W. Karl Braun Drive, P.O. Box 500 Beaverton, OR 97077-0001 US
国籍：US
代理机构：Schurack, Eduard F.
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