Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Reexamination Certificate
2005-01-18
2005-01-18
Boccio, Vincent (Department: 2616)
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
C386S349000, C348S571000, C706S020000
Reexamination Certificate
active
06845213
ABSTRACT:
The invention relates to a method for detecting and identifying time-constant patterns in video signals of any video source, particularly for automatically identifying advertising spots in television broadcastings or the like transmissions by video signal analysis. The invention further relates to a device for performing such a method and to a special use of such a method. Regarding the method at least one predetermined picture section of running-in video signals is written as brightness matrix into a picture storage; the border courses of the actual picture section are determined in the form of a directional field from the brightness matrix and buffered as directional field matrix, and by comparison of directional field matrixes of subsequent pictures of the same picture section with the buffered matrix, time-constant portions are identified wherein based on the time-constant portions of the directional field a modified directional field matrix is determined for further comparison measurements; if a sufficient time-constant pattern could not be identified, it is switched over to further picture sections for further reference measurements; after the successful determination of the reference matrix by comparison of the directional field matrixes of subsequent pictures of the same picture section with the reference matrix by means of statistical methods information regarding the further presence or absence of time-constant patterns can be derived.
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Maas Mike
Sowa Christoph
Stange Werner
Boccio Vincent
Gifford, Krass, Groh Sprinkle, Anderson & Citkowski, P.C.
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