Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With voltage or current conversion
Reexamination Certificate
2007-01-12
2010-10-05
Tang, Minh N (Department: 2829)
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With voltage or current conversion
Reexamination Certificate
active
07808230
ABSTRACT:
A voltage detection device that is connected to a DC circuit to which a DC voltage is applied and that detects the DC voltage applied to the DC circuit comprises a voltage conversion means for outputting a first voltage that increases as the DC voltage increases and a second voltage that decreases as the DC voltage increases, a voltage calculation means for inputting the first voltage and the second voltage outputted from the voltage conversion means and calculating the DC voltage based upon a difference between the inputted first voltage and the inputted second voltage, and a first failure judgment means for judging that failure has occurred if at least one of the first voltage and the second voltage is not inputted to the voltage calculation means.
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U.S. Appl. No. 12/160,642, filed Jul. 11, 2008, Morita et al.
Morita Tsuyoshi
Nagakura Hayato
Yoshida Shinsuke
Foley & Lardner LLP
Nguyen Trung Q
Nissan Motor Co,. Ltd.
Tang Minh N
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