Digital reference matrix for word verification

Details Digital reference matrix for word verification Digital reference matrix for word verification

G - Physics

06

K

354/227

G06K 9/00 (2006.01) G06K 9/72 (2006.01) G10L 15/00 (2006.01)

Patent

CA 1066422

DIGITAL REFERENCE MATRIX FOR WORD VERIFICATION Abstract: A digital reference matrix apparatus is disclosed for ver- ifying input alpha words from a keyboard, character recognition machine, or voice analyzer as valid linguistic expressions. The organization of the digital reference matrix is based upon the character transfer function of the input apparatus. The digital reference matrix contains a vector representation for each dic- tionary word in the form of a calculated vector magnitude and unique vector angle. The set of magnitudes and angles is stored in the digital reference matrix using a form of run length cod- ing by storing a single magnitude pointer followed by the chain of unique angles for words having the same magnitude. The vec- tor magnitude so calculated constitutes the address data for accessing the digital reference matrix. When an input word is received for verification, the word's magnitude and angle att- ributes are calculated and the digital reference matrix is ac- cessed at the magnitude of the input word and the corresponding angles are searched for a match. An output signal is generated indicating whether or not the input word is valid. The organ- ization of the digital reference matrix minimizes the size of the array needed for accurate word verification representation through the use of the combination of digital angle represent- ation and run length compaction of the magnitude/angle verifica- tion syntax.

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