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. 25, 1978
Filed:
May. 11, 1976
Applicant:
Inventor:
Junnosuke Shigeta, Hirakata, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ; G06G / ;
U.S. Cl.
CPC ...
328 35 ; 84-101 ; 307261 ; 328127 ;
Abstract
A waveform converter adapted for use in generating a music tone in an electronic musical instrument such as an electronic organ is disclosed. The frequency spectrum of an output signal waveform is periodically or transiently changed by changing pulse duration or duty factor of an input square wave.