Digital audio/video broadcast on cellular systems

Pulse or digital communications – Spread spectrum – Direct sequence

Reexamination Certificate

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Details

C455S518000, C455S517000, C455S522000, C455S450000

Reexamination Certificate

active

07986724

ABSTRACT:
A method for providing information to a plurality of wireless mobile communication devices. The method includes dedicating at least one channel of a plurality of spread spectrum data channels as a broadcast channel. The frequency and phase of a carrier signal and of a chip rate clock of the at least one channel are synchronized for each of a plurality of cell transmitters of a respective plurality of base stations. The Information is then broadcast over the at least one dedicated channel from each base station.

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patent: 198 45 040 (2000-04-01), None
patent: 2000-175263 (2000-06-01), None

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