Data processing: measuring – calibrating – or testing – Calibration or correction system – Position measurement
Patent
1996-12-27
1998-11-24
Williams, Hezron E.
Data processing: measuring, calibrating, or testing
Calibration or correction system
Position measurement
178 19, 367129, 367127, G01B 1700, C08C 2100
Patent
active
058421530
ABSTRACT:
A coordinate input apparatus which can stably input coordinates at a high precision is provided. A vibration sensor is fixed to a vibration propagating plate by means such as an adhesion or the like. Electrodes are formed on both edge surfaces of the vibration sensor. One electrode is connected to the vibration propagating plate (its surface is made of a conductive material). Another electrode is connected to a conductive plate spring through an electrode leading member. The electrode leading member has a cylindrical portion to position a projecting portion to a center axis by setting a side surface of the vibration sensor to a reference has a relation adapted to be come into engagement with the vibration sensor. The plate spring presses the electrode leading member to the vibration sensor and is electrically connected to the vibration sensor. Since the position to extract a signal from the vibration sensor is positioned by setting the side surface of the vibration sensor to a reference, the signal can be stably extracted at a high precision.
REFERENCES:
patent: 4887245 (1989-12-01), Mori et al.
patent: 4931965 (1990-06-01), Kaneko et al.
patent: 5484967 (1996-01-01), Yanagisawa et al.
patent: 5541892 (1996-07-01), Kobayashi et al.
Kobayashi Katsuyuki
Sato Hajime
Tanaka Atsushi
Tokioka Masaki
Yanagisawa Ryozo
Canon Kabushiki Kaisha
Miller Rose M.
Williams Hezron E.
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