Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Reexamination Certificate
2007-07-31
2007-07-31
Than, Thai Q. (Department: 2621)
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
C348S700000, C382S274000, C725S052000
Reexamination Certificate
active
10132968
ABSTRACT:
Systems and methods for providing enhanced navigation of stored digital video content based upon an event index. Includes generation and storage of an event index, as well as navigation based on events in the event index. An example system is embodied in a digital video recorder that detects and stores black field and silent frame events for use in locating commercial groups. The commercial groups may be skipped or otherwise navigated based upon data pointers linking the stored events to corresponding locations in the video data file. Generation of the event index may involve comparing a luminance value for each frame to a luminance threshold value for a video presentation. The luminance threshold value may be based upon a transition point between a first group of luminance values corresponding to video content and a second group of luminance values corresponding to transition events, such as black fields.
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Search Report for PCT International Application PCT/US03/13334 dated Oct. 9, 2003.
Briggs Adam
Chen Tai-Ming
Coley Chris
Dow Christopher
Liu Chuang-Chun
Digital Networks North America, Inc.
Hasan Syed Y.
Nieves Peter A.
Sheehan Phinney Bass & Green P.A.
Than Thai Q.
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