The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 22, 1989
Filed:
Aug. 05, 1985
James M Avery, Austin, TX (US);
NCR Corporation, Dayton, OH (US);
Abstract
A system for converting known speech segments into machine storable binary signals for the purpose of later attempting a match between a stored signal and an incoming signal using autocorrelation techniques. Through the use of a clipper and a sample and hold register, the system converts an incoming speech signal into a bit stream signal. Two successive groups of bits called frames are stored in separate registers. A bit-by-bit correlation is performed on the bits stored in the separate registers and a counter is indexed as a function of the correlation. A memory is provided for maintaining a record of the counts associated with each speech segment for later attempting computer pattern matching against received unknown speech segments.