Pattern recognition of speech or print input signal patterns is done by deforming the input signal (parameter vector pattern) to generate a set of orthonormal input patterns (basis vectors), the set compared with pre-stored reference vector patterns for similarity and recognition. The vector comparison...http://www.google.com.au/patents/US4752957?utm_source=gb-gplus-sharePatent US4752957 - Apparatus and method for recognizing unknown patterns
