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:
Feb. 19, 1985
Filed:
Jul. 22, 1983
Hideaki Ishida, Tokyo, JP;
Casio Computer Co., Ltd., Tokyo, JP;
Abstract
A key data entry system for an electronic musical instrument comprises a keyboard having a plurality of user operable chord specification keys, a detector for detecting the key operation state of the chord specification keys, a first specifying device for specifying a particular one of the operated chord specification keys and a second specifying device for specifying the number of chord specification keys operated at one time. Further provided is a chord designating device which designates the root note and the kind of a chord to be produced as a function of the particular one of the operated chord specification keys and the number of chord specification keys operated at one time. In one implementation, one type of chord is produced when only one chord specification key is operated, a second type of chord is produced when two of the chord specification keys are operated together and a third type of chord is produced when three or more of the chord specification keys are operated together.