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. 07, 1992
Filed:
Nov. 29, 1990
Applicant:
Inventors:
Takashi Suzuki, Hamamatsu, JP;
Yutaka Washiyama, Hamamatsu, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10H / ; G10H / ;
U.S. Cl.
CPC ...
84627 ; 84663 ;
Abstract
A differentiation circuit outputs a normalized time variable signal for each phase. This time variable signal is multiplied by a gain parameter by a multiplier, thus reproducing an AC amplitude level lost in normalization. The reproduced output is added to an amplitude parameter by an adder, thus reproducing a DC amplitude level lost in the normalization. A CPU reads out the parameters of the differentiation circuit and adder from an ROM, and writes them into a parameter memory. When phase-change data is detected, the content of the parameter memory is rewritten, thereby forcibly changing the phase.