Interactive video distribution systems – Use surveying or monitoring – By passively monitoring receiver operation
Reexamination Certificate
2011-07-19
2011-07-19
Koenig, Andrew Y (Department: 2423)
Interactive video distribution systems
Use surveying or monitoring
By passively monitoring receiver operation
C348S700000, C348S722000, C382S181000, C375S240260
Reexamination Certificate
active
07984462
ABSTRACT:
Methods and apparatus to detect blank images in a digital video broadcast signal are disclosed. An example method of detecting a blank image includes analyzing DC values of luminance blocks associated with a frame to determine a number of the luminance blocks having substantially the same DC value; and identifying the frame as a blank image if the number exceeds a predetermined threshold.
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Hanley Flight & Zimmerman, LLC.
Koenig Andrew Y
Le Rong
The Nielsen Company (US), LLC
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