Patent ID: 6809526
Filing Date: 2004-10-26
Classification: A61B,G06K,H04B

Abstract:
An apparatus for creating a recording of a system-response signal composed of superposed waveforms, said signal arising from a tested system, said system tested with stimuli, said system-response signal having an associated estimated system-response waveform, said estimated system-response waveform having frequencies of interest within a bandpass of interest, said apparatus comprising:(a) q-sequence generating means that generates at least one q-sequence, wherein said q-sequence is a pseudo-periodic sequence having a definitive time pattern, wherein said q-sequence has associated frequencies, said frequencies each having an associated Fourier coefficient magnitude, said coefficient magnitude ranging between 0 and the number of stimuli in said q-sequence, wherein said q-sequence has a maximum stimulus-interval variation less than 1.9 and greater than 0, and further wherein the magnitude of each said Fourier coefficient of said q-sequence within said bandpass of interest is 0.5 or greater; (b) stimulus-generating means that stimulates said tested system, said stimulus-generating means utilizing said q-sequence from (a) for timing of said stimuli; (c) data-acquisition means that records the system-response signal from said tested system, said data-acquisition means synchronized with said stimulus-generating means from (b).