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:
Feb. 07, 1978
Filed:
Aug. 26, 1976
Applicant:
Inventors:
Assignees:
Tokyo Shibaura Denki Kabushiki Kaisha, BOTH OF, JA;
Tokyo Denryoku Kabushiki Kaisha, BOTH OF, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G01R / ;
U.S. Cl.
CPC ...
364602 ; 307352 ; 307354 ; 3241 / ; 328135 ; 328151 ; 364483 ;
Abstract
The apparatus comprises a sampling hold circuit for sampling the amplitude of a sinusoidal wave at a predetermined frequency, a data sample extracting circuit for extracting two data samples at two points immediately before and after the peak value of the sinusoidal wave, and an operation circuit responsive to the absolute values of the two data samples for calculating the amplitude value of the sinusoidal wave.