US Patent 7110714 Television commerce system with program identifiers

A commerce control network is provided for obtaining product information and for purchasing products through a two-way interactive broadcast distribution system, such as a cable or satellite television system. The network includes advanced television set top boxes that provide users with the ability to access product information through the system. A unique identifier is received with the program being viewed and included in the user's request for product information to assure that the information retrieved from the network is timely and related to that program.