Sensor coil pattern and the coordinate input apparatus thereof

Details Sensor coil pattern and the coordinate input apparatus thereof Sensor coil pattern and the coordinate input apparatus thereof

1995-05-19

1997-08-12

Gaffin, Jeffrey A.

Coded data generation or conversion

Digital pattern reading type converter

For x or y coordinate determination

341 15, 178 19, 345173, H03M 122

Patent

active

056570112

ABSTRACT:
A sensor coil pattern used in combination with a coordinate input apparatus is provided, which is adapted to exactly detecting positions if a noise source such as an converter or an electrically closed conductor exists in the periphery of the apparatus. The apparatus is provided with a sensor surface having a sensor coil pattern of many sensor coils arranged thereon in parallel with each other in position detecting directions, a position indicator, a coil or a resonance circuit incorporated therein and a switching means so connected as to select simultaneously one of a plurality of a sensor coils, wherein said many sensor coils include a predetermined number of sensor coils individually connected to the switching means, said predetermined number of sensor coils including at least one or a plurality of sensor coils counted from one end of the arrangement.

REFERENCES:
patent: 5434372 (1995-07-01), Lin
patent: 5466896 (1995-11-01), Murakami et al.

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