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:
Dec. 08, 1998
Filed:
Aug. 07, 1996
Hironori Takahashi, Hamamatsu, JP;
Takuya Nakamura, Hamamatsu, JP;
Hamamatsu Photonics K. K., Hamamatsu, JP;
Abstract
A trigger circuit is composed of a frequency multiplying portion which receives an electric signal to be measured and multiplies its repetitive frequency so as to output a multiple signal, a comparing portion which receives this multiple signal and outputs a square wave signal corresponding to its value, and a dividing portion which divides the square wave signal so as to output a trigger signal. Accordingly, even when a noise component is superposed on the electric signal to be measured, a trigger signal having little jitter and a repetitive frequency lower than that of the electric signal to be measured is output. Also, the electric field measuring apparatus in accordance with the present invention comprises this trigger circuit and measures, with a highly accurate timing, the electric field of the object to be measured.