Data processing: measuring – calibrating – or testing – Calibration or correction system – Fluid or fluid flow measurement
Reexamination Certificate
2005-11-22
2005-11-22
Nghiem, Michael (Department: 2863)
Data processing: measuring, calibrating, or testing
Calibration or correction system
Fluid or fluid flow measurement
C702S050000, C702S012000, C702S045000
Reexamination Certificate
active
06968283
ABSTRACT:
A gas flow meter having a gas flow detection circuit for detecting a current flowing through a resistor installed in a gas passage and a voltage generated across the resistor and outputting a voltage signal representing a gas flow passing through the gas passage; a noise reduction circuit for reducing external noise; and a digital adjusting circuit for digitally adjusting a signal representing the detected gas flow and outputting the adjusted signal; wherein a voltage signal based on the signal adjusted by the digital adjusting circuit is output.
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Hanzawa Keiji
Katagishi Kenichi
Matsumoto Masahiro
Matsumura Takafumi
Sugiura Noboru
Cherry Stephen J.
Crowell & Moring LLP
Hitachi Car Engineering Co. Ltd.
Nghiem Michael
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