Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
September 19, 2006
Patent Application Number
10856009
Date Filed
May 28, 2004
Patent Primary Examiner
Patent abstract
Methods and apparatus for determining the phase of a signal in a measurement device having a digital signal processor are described. The signal is digitised and the digitised signal, or a signal derived therefrom, is numerically correlated with a numerically generated reference signal. In one embodiment, the reference signal has a predetermined phase. In a further embodiment, the numerically generated reference signal has a reference phase and the phase is determined from the result of the correlation. The techniques described herein may reduce the amount of information lost in determining the signal phase.
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