METHOD AND APPARATUS FOR IDENTIFYING A SIGNAL ROUTE FOR DELIVERY OF VIDEO-ON-DEMAND TO A SUBSCRIBER TERMINAL

摘要

A set top box includes an interface to a narrowcast video system, the interface adapted to receive communications from one or more modulators of a modulator group of the narrowcast video system. The set top further includes a decoder configured to extract a modulator group identifier periodically inserted into communications directed the set top box from the one or more modulators, the modulator group identifier unique to a physical transmission path from a headend of the narrowcast video to the one or more modulators. The set top includes a narrowcast video request interface to the narrowcast video system, the narrowcast video request interface configured to output a request for narrowcast video data including the modulator group identifier.

主权项

1. A set top box, comprising:
a narrowcast video receiver interface to a narrowcast video system, the narrowcast video receiver interface adapted to receive communications from a modulator group of the narrowcast video system; a decoder configured to extract a modulator group identifier periodically inserted into communications directed to the set top box from one or more modulators of the modulator group, the modulator group identifier unique to a physical transmission path from a headend of the narrowcast video system to the one or more modulators of the modulator group; and a narrowcast video request interface to the narrowcast video system, the narrowcast video request interface configured to output a request for narrowcast video data including the modulator group identifier.