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:
Dec. 27, 1994
Filed:
Dec. 22, 1992
Applicant:
Inventors:
Fumiteru Takeda, Hamamatsu, JP;
Kazuhisa Okamura, Hamamatsu, JP;
Assignee:
Yamaha Corporation, Hamamatsu, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10H / ;
U.S. Cl.
CPC ...
84602 ;
Abstract
In order to deal with a large amount of data and achieve a high-speed data transfer, an electronic musical instrument employs the configuration providing with plural CPUs and one main memory (RAM) so that the memory is accessed by plural CPUs. Herein, each of the CPUs provides a specific data bus, so that each of them can receive and transfer data via the specific data bus. When performing a data transfer between each CPU and memory, a line connection is selectively established between the memory and selected one of the data buses, so that each CPU can easily perform a data transfer by accessing the memory via its data bus.