Patent ID: 6720984
Filing Date: 2004-04-13
Classification: A61B,G06F,G06K

Abstract:
A method for providing an interface for control of an instrument, the method comprising:receiving electrical signals at at least two selected, spaced apart locations on a person's body that are generated in association with a selected gesture executed by the person, over a selected time interval; electronically processing the at least two electrical signals to identify at least one signal characteristic that is associated with the selected gesture by a process comprising: forming a sequence of at least two windows, each having a selected number w1 of samples of the received signals, where the at least two windows overlap each other by a selected number w2 of samples;. forming an average of magnitudes of values of the received signals within each of the at least two windows; determining a sequence of at least two state vectors that represent an average of magnitudes of values of the received signals within at least two selected time segments that are determined with reference to the at least two windows; and performing a hidden Markov modeling process on the at least two state vectors that are associated with the selected gesture.