4. Television
  5. Synchronization
  6. Locking of video or audio to reference timebase

David Keith Roberts

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Method and device for generating and detecting fingerprints...

Television – Synchronization – Locking of video or audio to reference timebase
Reexamination Certificate

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Real-time signature embedding in video

Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2190870

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