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. 12, 2001
Filed:
Oct. 15, 1999
Applicant:
Inventors:
Assignee:
Yamaha Corporation, Hamamatsu, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G10H 5/00 ; G01P 3/00 ;
U.S. Cl.
CPC ...
G10H 5/00 ; G01P 3/00 ;
Abstract
An automatic player piano has key sensors for producing digital key position signals representative of current key positions and a recording unit for producing pieces of music data information on the basis of the key motions; however, the key sensors have individualities, and vary the values of the digital key position signals in different ranges, respectively; the recording unit selects different components bits from each of the digital key position signal depending upon the value at a reference point so as to make the difference between the ranges small.