Communications – electrical: acoustic wave systems and devices – Distance or direction finding – With time interval measuring means
Patent
1994-11-30
1996-07-30
Pihulic, Daniel T.
Communications, electrical: acoustic wave systems and devices
Distance or direction finding
With time interval measuring means
367907, G01S 3808
Patent
active
055418929
ABSTRACT:
A piezoelectric sensor for detecting elastic plate vibrations in an object such as the transmission plate in a coordinate input apparatus is prismatic in shape and is fixed to the surface of the object. The prismatic sensor is arranged so that it is parallel to the direction of propagation of the vibrations and has an electrode surface perpendicular to the surface of the object. The arrangement of the prismatic sensor permits the thickness of the object in which the plate vibrations propagate to be substantially reduced and reduces the manufacturing cost of coordinate input apparatus using the prismatic sensor.
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Kobayashi Katsuyuki
Sato Hajime
Tanaka Atsushi
Tokioka Masaki
Yanagisawa Ryozo
Canon Kabushiki Kaisha
Pihulic Daniel T.
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