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:
Jan. 01, 1991
Filed:
Sep. 12, 1989
Applicant:
Inventor:
Tadasu Kakizaki, Shizuoka, JP;
Assignee:
Yamaha Corporation, Hamamatsu, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10H / ; G10H / ;
U.S. Cl.
CPC ...
84613 ; 84650 ; 84DI / ;
Abstract
There is disclosed an electronic keyboard system capable of producing musical tones on the basis of a sequence of pieces of musical data information and comprising: (a) memory for storing the pieces of musical data information grouped by time durations with respect to a beginning of a performance; (b) modification range defining portion for specifying a head position and a terminational position in the pieces of musical data information; (c) setting portion for establishing a variation; (d) modifying portion for modifying each first musical data information between the head position and the terminational position on the basis of the variation.