Image analysis – Pattern recognition – On-line recognition of handwritten characters
Reexamination Certificate
2007-07-06
2011-11-01
Koziol, Stephen (Department: 2624)
Image analysis
Pattern recognition
On-line recognition of handwritten characters
C382S181000
Reexamination Certificate
active
08050500
ABSTRACT:
Techniques for recognizing discrete multi-component symbolic input from a user can be applied to, for example, handwriting or speech. The techniques can include providing a database of model input sequences, where each model input sequence corresponds to a symbol to be recognized. Input functions, for example, discrete strokes, are obtained from a user and segmented into a sequence of discrete components. Hypothesis symbol sequences are obtained by comparing the discrete components to a database of symbols to be recognized and updating hypothesis symbol sequences based on the results of the comparison and hypothesis symbol sequence history from input previously acquired in time.
REFERENCES:
patent: 5636291 (1997-06-01), Bellegarda et al.
patent: 5768423 (1998-06-01), Aref et al.
patent: 6084985 (2000-07-01), Dolfing et al.
patent: 6285786 (2001-09-01), Seni et al.
patent: 6418239 (2002-07-01), Hullender et al.
patent: 6956969 (2005-10-01), Loudon et al.
patent: 7502509 (2009-03-01), Sheets et al.
patent: 7505041 (2009-03-01), Stamm et al.
patent: 2002/0067852 (2002-06-01), Nathan et al.
patent: 2002/0152069 (2002-10-01), Gao et al.
patent: 2002/0168107 (2002-11-01), Tang et al.
patent: 2003/0190074 (2003-10-01), Loudon et al.
patent: 2004/0234128 (2004-11-01), Thiesson et al.
patent: 2005/0100214 (2005-05-01), Zhang et al.
patent: 2005/0175242 (2005-08-01), Tanaka
Plamondon, Rejean et al. “On-Line and Off-Line Handwriting Recongition: A Comprehensive Survey.” IEEE, Jan. 2000, pp. 63-84, vol. 22, No. 1.
Rabiner, Lawrence R., “A Tutorial on Hidden Markov Models and Selected Applications in Speech Recognition.” IEEE, Feb. 1989, pp. 257-286, vol. 77, No. 2.
Shu, Han, “On-Line Handwritting Recognition Using Hidden Markov Models.” Submitted to the Dept of Electrical Engineering and Computer Science MIT, Feb. 1997, pp. 1-88.
Matsakis Nicholas, “Recognition of Handwritten Mathematical Expressions.” Submitted to the Dept of Electrical Engineering and Comptuer Science MIT, May 1999, pp. 1-59.
Narayanaswamy, Shankar, “Pen and Speech Recognition in the User Interface for Mobile Multimedia Terminals,” 1996, 172 pgs. University of California, Berkeley.
Batty Thayne S.
Long Steven N.
Kirton & McConkie
Koziol Stephen
Senapps, LLC
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