Computer graphics processing and selective visual display system – Display peripheral interface input device – Touch panel
Patent
1997-02-03
1998-11-03
Liang, Regina
Computer graphics processing and selective visual display system
Display peripheral interface input device
Touch panel
178 1804, G09G 500
Patent
active
058316035
ABSTRACT:
A coordinate input apparatus has an effective area in a vibration transmission member for inputting a vibration from a vibration generator and a computing unit that computes the coordinates of the position of the vibration generator on the basis of the delay time between the vibration generation and the detection of the vibrations by a vibration sensor. A vibration proof material is disposed in the periphery of the vibration transmission member to prevent the inputted vibrations from being reflected at the acoustic impedance boundary of the vibration transmission member. The vibration proof material is disposed so that the spacing between the edge of the effective area and the edge of the vibration proof material facing the effective area edge becomes larger with increasing distance along the effective area edge from the vibration sensor.
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patent: 4980518 (1990-12-01), Kobayashi et al.
patent: 5097102 (1992-03-01), Yoshimura et al.
patent: 5142106 (1992-08-01), Yoshimura et al.
Kobayashi Katsuyuki
Sato Hajime
Tanaka Atsushi
Tokioka Masaki
Yanagisawa Ryozo
Canon Kabushiki Kaisha
Liang Regina
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