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:
May. 06, 1997
Filed:
May. 29, 1996
Applicant:
Inventors:
Wayne L Stahnke, Los Angeles, CA (US);
Yuji Fujiwara, Shizuoka, JP;
Taro Kawabata, Shizuoka, JP;
Rei Furukawa, Shizuoka, JP;
Takashi Tamaki, Shizuoka, JP;
Assignee:
Yamaha Corporation, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G10G / ;
U.S. Cl.
CPC ...
84462 ; 84171 ;
Abstract
A hammer sensor incorporated in a keyboard musical instrument monitors a motion of each hammer assembly, and a controller not only determines a hammer velocity and an impact time for generating a set of music data codes representative of a music performance but also measures an actual distance between the hammer sensor and an impact point against a music string on the basis of a forward trajectory and a backward trajectory measured by the hammer sensor; thereby allowing a worker to easily adjust the hammer sensor to an appropriate position.