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:
Oct. 09, 1984
Filed:
Jul. 07, 1982
Toshio Kashio, Tokyo, JP;
Casio Computer Co., Ltd., Tokyo, JP;
Abstract
An electronic musical instrument employs a novel technique to produce a musical sound. A major part of a musical sound producing section of the electronic musical instrument is constructed by digital circuitry which is well adapted for an LSI fabrication. The electronic musical instrument comprises a volume control means to digitally perform a volume control to increase or decrease a performance volume, a period counting means to count one cycle of a musical sound wave by a plurality of counting steps in order to form a musical sound wave under digital control, a period control means to control the period counting means in accordance with the scale represented by a depressed performance key, and a means to instruct the rise and the fall of a musical sound wave by a value which is an integral multiple of a control value of the volume control means, for each block including a predetermined number of counting steps.