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:
Jul. 01, 1980
Filed:
May. 03, 1979
Takeji Kimura, Toyonaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An electronic musical instrument of a type in which information of actuation of keys is detected by scanning the keys of keyboard. The electronic musical instrument includes the keys selectively actuable for producing sounds which correspond to respective musical scale notes, circuitry for sequentially scanning said keys for detection of the information of the actuation of said keys, and memorizing circuitry which corresponds to each of the keys so that the information of the actuation of the keys is memorized. Each memorizing circuitry is composed of a pair of capacitors, one of which is a small capacitor for 'dynamic' holding, and the other of which is a capacitor for determination of decay envelope, with the latter being sequentially connected electrically to the former.