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.

Date of Patent:
Sep. 11, 2007

Filed:

Jan. 10, 2005
Applicants:

Shigeru Muramatsu, Shizuoka, JP;

Yasuhiko Ohba, Shizuoka, JP;

Yuji Fujiwara, Shizuoka, JP;

Inventors:

Shigeru Muramatsu, Shizuoka, JP;

Yasuhiko Ohba, Shizuoka, JP;

Yuji Fujiwara, Shizuoka, JP;

Assignee:

Yamaha Corporation, Shizuoka-Ken, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10H 1/32 (2006.01);
U.S. Cl.
CPC ...
Abstract

A set of formation data codes, which includes action event codes and duration codes, is loaded in an automatic player piano, and a controller interprets the action event codes for driving the solenoid-operated key actuators; since the solenoid-operated key actuators slowly push the associated keys, the hammers do not reach the strings, and any piano tone is not produced; the plungers make the keys sunk to different depth so that the keys are laid on a artistic pattern; the controller sequentially changes the artistic pattern, and offers an artistic visual expression to the audience.


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