Patent Document ID: 7563971
Application ID: 10955959
Patent Status: 1

Claim One:
1. A pattern recognition system comprising: a controller having at least one input receiving a test frame sequence and a plurality of signal frames to be searched for matches to the test frame sequence, wherein the controller: identifies as potential matches each sequence of frames within the plurality of signal frames having a frame with an energy magnitude that is within a predetermined difference of a local maximum energy magnitude for frames within the test frame sequence; compares total energy for each potential match frame sequence to total energy of the test frame sequence; and selects matches based on a weighted combination of (a) a difference between an energy magnitude for a frame within the test frame sequence and an energy magnitude for a frame within each sequence of signal frames, and (b) a difference between total energy of the test frame sequence and total energy of each sequence of signal frames, wherein each potential match frame sequence includes a number of frames equal to a number of frames within the test frame sequence, and wherein a location within the respective potential match frame sequence of the frame with energy magnitude within the predetermined difference of the local maximum energy magnitude corresponds to a location within the test frame sequence of a frame having the local maximum energy magnitude.