THIS OPINION WAS NOT WRITTEN FOR PUBLICATION
The opinion in support of the decision being entered today (1) was not written for
publication in a law journal and (2) is not binding precedent of the Board.
Paper No. 59
UNITED STATES PATENT AND TRADEMARK OFFICE
____________
BEFORE THE BOARD OF PATENT APPEALS
AND INTERFERENCES
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Ex parte YOICHI TAKEBAYASHI,
HIROSHI KANAZAWA, AND
HIROYUKI CHIMOTO
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Appeal No. 1997-4121
Application No. 08/427,272
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HEARD: March 7, 2000
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This is a decision on appeal from the final rejection of claims 1 through 15, all of the claims pending
in the application.
The invention pertains to time series signal recognition in general and to speech recognition in
particular. Highly accurate recognition tests in quiet environments have been known but the recognition
rate is drastically reduced in noisy environments due to false pattern matching or failure of appropriate
word boundary detection. While word spotting, or continuous pattern matching, has been used to alleviate
the problem, other problems have arisen. As depicted in prior art Figure 1, the word boundary for a
particular signal gets narrower as the noise level increases. But, the speech recognition dictionary
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