Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1991-05-08
1993-06-22
Boudreau, Leo H.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
382 43, H04N 1700, G06K 900
Patent
active
052219674
ABSTRACT:
A cable television signal for example may be monitored and impairments determined and in many cases classified by grabbing at least portion of a transmitted frame of video information somewhere on the network to provide a video signal, performing a two dimensional Fourier transform on the video signal and analyzing the Fourier transform so obtained to determine the location of areas indicating above average occurrence of specific frequencies to provide an indication of an impairment.
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patent: 5073822 (1991-12-01), Gumm et al.
Ward Rabab K.
Zhang Qin
Anderson David R.
Boudreau Leo H.
Rowley C. A.
The University of British Columbia
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