Position pointing device, system and method employing AC field

Details Position pointing device, system and method employing AC field Position pointing device, system and method employing AC field

1995-02-03

1997-05-13

Chin, Wellington

Telegraphy

Systems

Position coordinate determination for writing

178 18, 178 20, G09G 302

Patent

active

056295006

ABSTRACT:
Detailed information about plural factors determining a color and the coordinate value of a pointed position are determined from a position pointing device. The detailed information about the plural colors is by factors such as detailed gradation information on basic colors such as red, green, and blue. The amplitude or frequency of an AC field is controlled in accordance with the set color information. The AC field has a spatial distribution corresponding to the coordinate value of the pointed position.

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patent: 5333243 (1994-07-01), Best
patent: 5349139 (1994-09-01), Verrier et al.
patent: 5434372 (1995-07-01), Lin

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