Television – Image signal processing circuitry specific to television – Motion dependent key signal generation or scene change...
Reexamination Certificate
2006-02-21
2006-02-21
Kostak, Victor R. (Department: 2614)
Television
Image signal processing circuitry specific to television
Motion dependent key signal generation or scene change...
C348S180000, C348S722000
Reexamination Certificate
active
07002637
ABSTRACT:
A system for detecting picture freeze within a video signal wherein a video signal processing portion for connection to a video signal source comprising digital video luma samples and digital video clock and timing signals separately detects motion across the vertical axis of the video picture and across the horizontal axis of the video picture and wherein a frozen picture indicating portion connected to the output of the video signal processing portion determines the number of motionless video picture frames occurring since the last video picture frame in which motion was detected to indicate picture freeze when the number of motionless video picture frames reaches a predetermined value. A noise reduction threshold signal is applied to the video signal processing portion to distinguish motion from background noise in a video signal.
REFERENCES:
patent: 5488430 (1996-01-01), Hong
patent: 5612752 (1997-03-01), Wischermann
patent: 6055018 (2000-04-01), Swan
patent: 6259480 (2001-07-01), Yamauchi et al.
patent: 6633329 (2003-10-01), Janko et al.
patent: 6738099 (2004-05-01), Osberger
Magarelli Romolo
Szybiak Semko
Evertz Microsystems Ltd.
Hodgson & Russ LLP
Kostak Victor R.
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