Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
April 1, 2008
Patent Application Number
10223340
Date Filed
August 19, 2002
Patent Primary Examiner
Patent abstract
A data processing apparatus is provided for detecting distortion of a data signal to which a template signal has been introduced into different frequency bands of the signal. The apparatus includes a frequency component processor operable to generate data representative of the frequency components of the first and the second frequency bands of the data signal, and a detection processor operable to identify the distortion of the data signal in accordance with a relative frequency change between the versions of the recovered template signal.
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