Patent ID: 7051355
Filing Date: 2006-05-23
Classification: H04H,H04N

Abstract:
1. A receiving apparatus for receiving a second digital broadcasting signal over a second transmission medium generated by applying a modulation conversion method to a first digital broadcasting signal adopted to be transmitted over a first transmission medium corresponding to non-distributed channels, said apparatus comprising: input means for inputting a service number which a user selects; detecting means for detecting a Network Information Table (NIT) from an error correcting section; first determination means for determining whether the service number is one of one or more predetermined service numbers to which the user does not have access to because said service number corresponds to a promo-channel; second determination means for determining whether a channel currently received by said user includes said promo-channel; reporting means for reporting to the user that information corresponding to the service number is not available to the user, when said first determination means determines that the service number is one of the one or more predetermined service numbers; extracting means for extracting information corresponding to the service number from the second digital broadcasting signal when said first determination means determines that the service number is not one of the one or more predetermined service numbers; wherein service-list descriptors or satellite-delivery descriptors corresponding to services available via said first transmission medium corresponding to said non-distributed channels not available via said second transmission medium and identified by said one or more predetermined service numbers are deleted before being transmitted via said second transmission medium and reaching said receiving apparatus in order to prevent subscribers receiving services via said second transmission medium from viewing promotional material for services only available via said first transmission medium.