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:
Jun. 11, 2002
Filed:
Dec. 13, 2000
Applicant:
Inventors:
Shigeru Muramatsu, Shizuoka, JP;
Yasuhiko Oba, Shizuoka, JP;
Tadaharu Kato, Shizuoka, JP;
Kiyoshi Kawamura, Shizuoka, JP;
Assignee:
Yamaha Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10H 3/06 ;
U.S. Cl.
CPC ...
G10H 3/06 ;
Abstract
An automatic player piano is an acoustic piano equipped with a data acquisition system and a playback system, and the data acquisition system monitors the hammers with hammer sensors for producing a set of music data codes representative of a performance on the keyboard, wherein the hammer sensor has a detectable range over the trajectory of the associated hammer so that the data acquisition system obtains pieces of music data accurately representative of the trajectory of hammer to be required for a faithful reproduction of the original performance.