Signal Detection Device, Signal Detection Method, and Method of Manufacturing Signal Detection Device
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United States of America Patent
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Issued Date -
Sep 1, 2011
app pub date -
Aug 27, 2009
filing date -
Oct 9, 2008
priority date (Note) -
Abandoned
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Abstract
A signal detection device allows wavelet transformation of an object signal to be performed in real time by using a real signal mother wavelet. The signal detection device has: an object signal decomposition unit having a lifting scheme structure or a multiple analysis structure relying on multiresolution analysis; a parasitic filter coupled to a desired decomposition filter of the object signal decomposition unit, with the parasitic filter being configured such that a real signal mother wavelet is inputted to the object signal decomposition unit and a generic discrete wavelet transformation is performed, the parasitic filter substantially reproduces and outputs the inputted real signal mother wavelet, and with the real signal mother wavelet being made up of the object signal; means for inputting the object signal to the object signal decomposition unit and performing discrete wavelet transformation using the real signal mother wavelet; and means for computing a wavelet instantaneous correlation on the basis of an output of the parasitic filter.
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