Television – Special applications – Manufacturing
Patent
1995-06-07
1997-04-15
Burgess, Glenton B.
Television
Special applications
Manufacturing
348907, 455 2, H04N 1700, H04N 1704
Patent
active
056214545
ABSTRACT:
The present invention relates to a method of producing a signature characterizing an interval of a video signal representing a picture for use in broadcast segment recognition. The signature is produced based on portions of the video signal representing corresponding regions of the picture. The invention also serves to produce a corresponding mast word including a plurality of bit values each representing a reliability of a corresponding value of the signature. The first signature is formed having a plurality of values each of which is based on a respective one of the portions of the video signal. A second signature is formed also having a plurality of values each based on respective ones of a plurality of shifted portions of the video signal. The shifted portions each corresponds to a respective one of the video signal portions and has a location displaced from a location of the respective one of the portions by a predetermined amount, such that each value of the first signature corresponds to a value of the second signature. The respective values of the first and second signatures are compared and bit values of the mask word are established based on this comparison.
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Clifton David L.
Dunn Stephen M.
Ellis Michael D.
Fellinger Michael W.
James David M.
Burgess Glenton B.
Flanagan, III Eugene L.
The Arbitron Company
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