Signal transfer method and apparatus
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United States of America Patent
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Mar 15, 2011
Grant Date -
Aug 11, 2005
app pub date -
Jun 5, 2003
filing date -
Jun 5, 2002
priority date (Note) -
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Abstract
An x-y digitising system is described which operates with a resonant stylus. The x-y digitising system includes an excitation winding for energising the resonant stylus and a number of sensor windings for receiving a signal re-radiated by the resonant stylus when energised. At least one of the excitation winding and the sensor winding is arranged to have its effective magnetic axis non-othogonal to the working area of the x-y digitising system. With this arrangement, improved energy transfer between the x-y digitising system and the resonant stylus can be achieved and/or improved position measurement accuracy can be obtained.
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