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:
Apr. 21, 2015
Filed:
May. 24, 2013
Tanashin Denki Co., Ltd., Tokyo, JP;
Masakatsu Sawada, Tokyo, JP;
Kenya Matsushita, Tokyo, JP;
Tanashin Denki Co., Ltd., Tokyo, JP;
Abstract
A signal generation device and a signal generation method may measure leakage currents, such as an input current value I and phase-shifted current values I cos θ and I sin θ in a short period of time and automatically output the detected values without calculating a vector of a phase difference. The signal generation device generates logical signals from a voltage waveform and a current waveform of a measured power line through first and second comparators, sets parameters, full-wave rectifies the current waveform, and performs quantization transform on the full-wave rectified current waveform using a successive ΔΣADC.