Image analysis – Applications
Reexamination Certificate
2007-03-13
2007-03-13
Mehta, Bravesh M. (Department: 2624)
Image analysis
Applications
C353S020000, C353S029000, C353S030000, C386S349000, C386S349000, C386S349000, C713S176000
Reexamination Certificate
active
11077894
ABSTRACT:
Signals encoded with watermark information are generated and broadcast into a protected area for capture by illicit recording devices along with their intended targets. An illicit recording in which at least a portion of the broadcast watermark signals are recorded is obtained and correlated with a known position of the broadcast watermark signals to yield the location of illicit recording devices. In an alternate embodiment, a surveillance device, being image and time synchronized with a signal broadcasting device, monitors and records the protected area. Illicit recordings containing the broadcast watermark are obtained and correlated with corresponding recordings taken by the surveillance device to identify the location of illicit recording devices. In an alternate embodiment, the surveillance device further monitors the quality of the broadcast watermark signals and adjusts them accordingly to achieve a desired quality level.
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Briancon Alain Charles Louis
Carlton Alan Gerald
Chitrapu Prabhakar R.
Goldberg Steven Jeffrey
Herschaft Richard Dan
Edwards Patrick
InterDigital Technology Corporation
Mehta Bravesh M.
Volpe and Koenig P.C.
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