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Robert W Schumann, Siu Leong Iu, Kobad Bugwadia, Guillaume Mercier, Shiva Ramadoss, Michael Bergeron, Jack Ehrhardt: System and methodology for tracing to a source of unauthorized copying of prerecorded proprietary material, such as movies. Digital Video Express, McDermott Will & Emery, September 4, 2001: US06285774 (196 worldwide citation)

To enable the source of an unauthorized copy of an information-bearing medium, such as a video DVD, to be traced, a compressed digital signal stream to be stored on the medium is altered to include “running marks,” that comprise pixel blocks changing in position frame by frame and encoded with infor ...


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Schumann Robert W, Iu Siu Leong, Bugwadia Kobad, Mercier Guillaume, Ramadoss Shiva, Bergeron Michael, Ehrhardt Jack: System and methodology for tracing to a source of unauthorized copying of prerecorded proprietary material, such as movies. Digital Video Express, Schumann Robert W, Iu Siu Leong, Bugwadia Kobad, Mercier Guillaume, Ramadoss Shiva, Bergeron Michael, Ehrhardt Jack, DEVINSKY Paul, December 16, 1999: WO/1999/065241

To enable the source of an unauthorized copy of an information-bearing medium, such as a video DVD, to be traced, a compressed digital signal stream to be stored on the medium is altered to include 'running marks', that comprise pixel blocks changing in position frame by frame and encoded with infor ...


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Schumann Robert W, Iu Siu Leong, Bugwadia Kobad, Mercier Guillaume, Ramadoss Shiva, Bergeron Michael, Ehrhardt Jack: System and methodology for tracing to a source of unauthorized copying of prerecorded proprietary material, such as movies. Digital Video Express, March 28, 2001: EP1086585-A1

To enable the source of an unauthorized copy of an information-bearing medium, such as a video DVD, to be traced, a compressed digital signal stream to be stored on the medium is altered to include "running marks", that comprise pixel blocks changing in position frame by frame and encoded with infor ...



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