US Patent 7155836 Method and apparatus for using magnetic field

Patent 7155836 was granted and assigned to Samsung on January, 2007 by the United States Patent and Trademark Office.

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Patent

Patent attributes

Current Assignee

Samsung

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

71558360

Date of Patent

January 2, 2007

Patent Application Number

109519130

Date Filed

September 29, 2004

Patent Citations Received

‌

US Patent 11713123 Limited swivel apparatus for a passenger seat

Patent Primary Examiner

‌

R. Alexander Smith

Patent abstract

Provided a method and apparatus for using a magnetic field. The method includes: measuring and storing magnetic field data indicating magnitudes of a magnetic field in different directions at each time by rotating sensors over a space; and checking whether a disturbance of the magnetic field exists, using curve fitting parameters such as amplitude and offset of at least one of magnetic field trajectories formed by the stored magnetic field data.

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