Patent ID: 9124375
Filing Date: 2015-09-01
Classification: H04H

Abstract:
1. A method of operating a receiver in a broadcast system, the method comprising: receiving a transmission made by a broadcaster in the broadcast system; demodulating program content included in the transmission; demodulating substitution content included in the transmission; storing a portion of the demodulated substitution content in a memory included in the receiver; demodulating receiver commands included in the transmission; in response to a demodulated receiver commands that specifies a portion of the substitution content, checking whether the specified portion of substitution content is accessible by the receiver; and responsive to the checking, wherein the program content that is part of the transmission includes one or more complete programs playable at the receiver in unmodified form, each complete program including one or both of: (i) advertising-free content such that at least some of said advertising-free content can be replaced with stored substitution content that includes advertising, and (ii) content that includes advertising such that at least some of the included advertising can be replaced by with stored substitution content that does not include advertising, such that when the receiver is not able to replace a portion of the program content with a portion of the substitution content, the receiver can play back the program content that is part of the transmission without any replacing.