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:
Apr. 25, 1989
Filed:
May. 11, 1987
Applicant:
Inventor:
Atsushi Sakurai, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10L / ;
U.S. Cl.
CPC ...
3645135 ; 381 47 ; 381 43 ; 381 51 ; 381 41 ;
Abstract
A voice subtractor/recognizer which prevents interference from a voice output device by inputting via one input device both a sound to be recognized and any sound being output by the output device, and inputting at a second input device a signal representing the output of the output device. The latter signal is analyzed, and the result is used to inversely filter a signal representing the sounds input via the first-mentioned input device.
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Sakurai, Atsushi. (1989). Speech recognizer (U.S. Patent No. 4825384). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4825384
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