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:
Nov. 16, 1976
Filed:
Sep. 09, 1975
Ikutaro Kakehashi, Osaka, JA;
Roland Corporation, Osaka, JA;
Abstract
An arpeggio circuit for an electronic keyboard instrument has means for generating a desired sweep voltage which is continuously varied, a voltage control type oscillator connected to the generator for generating a sweep frequency which is varying in proportion to the sweep voltage, a plurality of pulse generating means, one for each note of the keyboard instrument, and each having a series connected resonance circuit means and pulse forming means for forming a pulse in response to the output from said resonance circuit means. The pulse generating means are connected to the oscillator in parallel with each other. Tone generator means is coupled to the outputs of the respective pulse generating means for generating tone signals in response to the outputs of the pulse generating means, and arpeggio producing means is coupled to the pulse generating means for cancelling the output of the resonance circuit means for all of the pulse generating means other than the pulse generating means corresponding to the notes of the arpeggio.