Patent ID: 8606074
Filing Date: 2013-12-10
Classification: H04N

Abstract:
1. A system for altering a presentation of broadcast content, said system comprising: a digitizer operable to access a digital signal comprising said broadcast content; a memory operable to receive and store a plurality of test data structures; a comparator operable to compare, at intervals, said digital signal with at least some of the test data structures; and circuitry operable to generate a control signal responsive to a match of at least a portion of the digital signal with at least a portion of the test data structures, wherein said control signal is operable to alter a component of a presentation of said portion of said broadcast content, wherein a length of an interval between comparisons of the digital signal to the test data structures is a first length for a first period commencing with a match of at least a portion of the digital signal with at least a portion of the test data structures, the first period ending at a first time, the length of the interval between comparisons of the digital signal to the test data structures being shortened to a second length shorter than the first length upon the elapse of the first period.