Coordinates input apparatus and its method

Details Coordinates input apparatus and its method Coordinates input apparatus and its method

1996-09-05

1998-10-06

Wu, Xiao

Computer graphics processing and selective visual display system

Display peripheral interface input device

Touch panel

345179, G09G 500

Patent

active

058184295

ABSTRACT:
Coordinates input apparatus and method which can accurately calculate a coordinate position by two vibration sensors are provided. The occurrence of a vibration of an input pen is controlled by at least two kinds of forms. At least two vibration sensors each for detecting the vibration from the input pen are provided. On the basis of the time until the vibration of each form arrives every vibration sensor, the distance from the input position of the input pen is calculated every vibration of each form. A difference between the distances calculated every vibration of each form which is calculated is calculated every vibration sensor.

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patent: 5539678 (1996-07-01), Tanaka et al.
patent: 5565893 (1996-10-01), Sato et al.

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