Patent ID: 7840976

Claim:
A method of delivering a receiver specific program at least one of a plurality of receiver stations, comprising using a computer to perform the following steps of: generating a first control signal at a transmitter station; receiving a second control signal at said transmitter station, said second control signal operative to communicate said first control signal; and transmitting said first control signal to said at least one of said plurality of receiver stations in response to said second control signal, said first control signal effective at said at least one of said plurality of receiver stations to control a computer to perform a step for computing a receiver specific value by processing information stored in said computer, a step for generating a receiver specific signal based on said receiver specific value, a step for placing said receiver specific signal at a specific memory location, a step for outputting said receiver specific signal, a step for clearing said receiver specific signal from said specific memory location, and a step for delivering programming including said receiver specific signal in a period of time between said step for placing said receiver specific signal at said specific memory location and said step for clearing said receiver specific signal from said specific memory location.