DETECTION CIRCUIT, DETECTION METHOD, AND PHYSICAL AMOUNT MEASUREMENT DEVICE

Title:

DETECTION CIRCUIT, DETECTION METHOD, AND PHYSICAL AMOUNT MEASUREMENT DEVICE

Document Type and Number:

WIPO Patent Application WO/2005/068939

Kind Code:

A1

Abstract:

A detection circuit (30) includes an input unit (30a) of a detection signal to be synchronized, an input unit (30b) of a reference signal for the detection signal to be synchronized, and an offset signal input unit (30c) for applying an offset signal to the detection signal to be synchronized. The offset signal is superimposed on the detection signal to be synchronized and synchronous detection is performed according to the reference signal.

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Inventors:

YOKOI SHOJI (JP)
KOBAYASHI YOSHIHIRO (JP)
TAKAHASHI MASAYUKI (JP)

Application Number:

PCT/JP2005/000937

Publication Date:

July 28, 2005

Filing Date:

January 19, 2005

Export Citation:

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Assignee:

NGK INSULATORS LTD (JP)
SEIKO EPSON CORP (JP)
NIPPON PRECISION CIRCUITS (JP)
YOKOI SHOJI (JP)
KOBAYASHI YOSHIHIRO (JP)
TAKAHASHI MASAYUKI (JP)

International Classes:

G01C19/56; G01C19/5614; G01P15/08; (IPC1-7): G01C19/56

Foreign References:

JPH08136267A	1996-05-31
JPS60188809A	1985-09-26
JPH0933258A	1997-02-07
JPH04297874A	1992-10-21
JPH09105637A	1997-04-22

Other References: