Geometrical instruments – Indicator of direction of force traversing natural media – Magnetic field responsive
Reexamination Certificate
2007-05-01
2007-05-01
Guadalupe-McCall, Yaritza (Department: 2859)
Geometrical instruments
Indicator of direction of force traversing natural media
Magnetic field responsive
C033S35500D, C702S092000
Reexamination Certificate
active
11150643
ABSTRACT:
A method is designed for measuring a magnetic offset of a geomagnetic sensor equipped in a portable information terminal apparatus having a storage. The geomagnetic sensor has a magnetic sensitivity to a geomagnetic field and is affected by magnetization to cause the magnetic offset. In the method, an output of the geomagnetic sensor is measured to successively provide measurement data of the geomagnetic field from the output of the geomagnetic sensor. The measurement data is stored in the storage. The measurement data is read out from the storage when a number of the measurement data stored in the storage reaches a predetermined number, and an offset value of the magnetic offset is estimated based on the predetermined number of the measurement data read out from the storage.
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Written opinion of the International Searching Authority and International Search Report for PCT/JP2004/011191.
Written opinion of the International Searching Authority and International Search Report for PCT/JP2004/010479.
Nihashi Satoshi
Sato Hideki
Dickstein & Shapiro LLP
Guadalupe-McCall Yaritza
Yamaha Corporation
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