Downstream control of electronic billboard

A system and method are disclosed for authorizing, controlling and monitoring the insertion of advertising indicia and other video images into a broadcast video stream by an Electronic Billboard system (22) operated at a location remote from a video program origination location. The disclosed contro...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	BROWN F. WILLIAMS, ROY JONATHON ROSSER
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING BROADCAST COMMUNICATION CRYPTOGRAPHY DISPLAY DISPLAYING EDUCATION ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LABELS OR NAME-PLATES PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION SEALS SIGNS
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