Patent ID: 6243866
Filing Date: 2001-06-05
Classification: H04H

Abstract:
A method for a transmission of digitized TV-video signals from a base station to users through a forward video data stream, and for providing a backward channel from the users to the base station using a time-division-multiplexing two-way operation and with HF modulation for wireless TV transmission, the method comprising the steps of:reading into a base station memory the forward video data stream;reading out the forward video data stream from the base station memory and activating the HF modulation as a function of the forward video data stream and a predefined time so as to provide a continuous video data stream;providing temporal gaps in the forward video data stream, the temporal gaps being provided after any digitization of the forward video data stream;during the temporal gaps, turning off the HF modulation at the base station and switching over a transmitting antenna to a receive mode for receiving the backward channel, the same frequency band being used for the backward channel and transmission of the forward video data stream;switching over user antennas, synchronously with the switching over of the transmitting antenna, from a user receive mode to a user transmit mode, the switching over of the user antennas being a function of the temporal gaps; andreading out the forward video data stream from a user memory so as to provide the continuous video data stream.