Telegraphy – Systems – Position coordinate determination for writing
Patent
1996-07-18
1999-08-10
Shankar, Vijay
Telegraphy
Systems
Position coordinate determination for writing
178 1803, 178 1804, 345176, 345177, G08C 2100, G09G 500
Patent
active
059362073
ABSTRACT:
A vibration-transmitting tablet and coordinate-input apparatus at low prices, which enable to easily manage precision of vibration detection position. A vibration-input pen inputs vibration, generated by its vibrator, onto the vibration-transmitting tablet formed by polarizing a piezoelectric member in its thickness direction. When the vibration propagated on the vibration-transmitting tablet reaches four electrodes provided at predetermined positions of the vibration-transmitting tablet, electric signals based on the vibration are detected from the respective electrodes. A signal-waveform detector detects arrival of the vibration at the electrodes based on the electric signals. An arithmetic controller calculates coordinates of the vibration-input position based on arrival timings of the vibration. The arrangement of the electrodes on the vibration-transmitting tablet can be realized by etching, printing or the like, thus management of precision of vibration-detection positions can be much easier.
REFERENCES:
patent: 4833279 (1989-05-01), Chen et al.
patent: 4886943 (1989-12-01), Suzuki et al.
patent: 4887245 (1989-12-01), Mori et al.
patent: 4897510 (1990-01-01), Tanaka et al.
patent: 4931965 (1990-06-01), Kaneko et al.
patent: 4980518 (1990-12-01), Kobayashi et al.
patent: 5017913 (1991-05-01), Kaneko et al.
patent: 5097102 (1992-03-01), Yoshimura et al.
patent: 5142106 (1992-08-01), Yoshimura et al.
patent: 5177472 (1993-01-01), Taniishi
patent: 5239138 (1993-08-01), Kobayashi et al.
patent: 5500492 (1996-03-01), Kobayashi et al.
patent: 5539678 (1996-07-01), Tanaka et al.
patent: 5565893 (1996-10-01), Sato
patent: 5570299 (1996-10-01), Tokioka
Kobayashi Katsuyuki
Sato Hajime
Tanaka Atsushi
Tokioka Masaki
Yanagisawa Ryozo
Canon Kabushiki Kaisha
Shankar Vijay
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