Inventor
CLIFTON DAVID L
US5 patents
Patents
5 patentsUS5612729AMar 18, 1997
Method and system for producing a signature characterizing an audio broadcast signal
ARBITRON CO478 citations98
US5504518AApr 2, 1996
Method and system for recognition of broadcast segments
ARBITRON CO383 citations98
US5436653AJul 25, 1995
Method and system for recognition of broadcast segments
ARBITRON CO770 citations98
US5621454AApr 15, 1997
Method and system for recognition of broadcast segments
ARBITRON CO296 citations97
US5572246ANov 5, 1996
Method and apparatus for producing a signature characterizing an interval of a video signal while compensating for picture edge shift
ARBITRON CO256 citations97