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:
Aug. 17, 1976
Filed:
Feb. 25, 1975
Masahiko Koike, Hamamatsu, JA;
Nippon Gakki Seizo Kabushiki Kaisha, Hamamatsu, JA;
Abstract
The automatic rhythm producing apparatus according to the invention is capable of providing a clock pulse used for obtaining a basic tempo of a rhythm sound with an irregular pulse period as desired. The apparatus comprises an oscillator for producing a saw-tooth wave signal, a plurality of comparators for comparing this saw-tooth wave signal and a set reference voltage, pulse generation circuits for producing pulses in response to the outputs of the comparators, voltage dividers for supplying the set reference voltages to the comparators, a variable voltage power supply for supplying a variable voltage to the voltage dividers and a pulse generation circuit for producing a pulse when the level of the saw-tooth wave signal drops to zero. The pulse period of a clock pulse obtained by combining the outputs of these pulse generation circuits can be made irregular by suitably varying the variable constant voltage.