Manual input unit

Details Manual input unit Manual input unit

1997-12-19

1999-11-09

Hjerpe, Richard A.

Computer graphics processing and selective visual display system

Display peripheral interface input device

Cursor mark position control device

345157, 463 36, G09G 508

Patent

active

059823542

ABSTRACT:
A manual input unit comprising an actuator section movably supported in a frame, a generator section for outputting a voltage corresponding to a movement of the actuator section, and a signal transmission section for transmitting a data signal corresponding to an output-voltage value of the generator section to an external processing unit. The generator section includes a switching means which is closed when the actuator section is in a reference position and is opened when the actuator section is moved apart from the reference position, and a generating means for generating a voltage linearly corresponding to a displacement of the actuator section from the reference position. The signal transmission section defines, on the basis of a voltage generated from the generating means at an instant when the actuator section departs from the reference position to open the switching means, a voltage subsequently generated from the generating means while the switching means is in an opened state as the output-voltage value of the generator section. The signal transmission section then selects data corresponding to the defined output-voltage value in accordance with a predetermined relationship.

REFERENCES:
patent: 5296871 (1994-03-01), Paley
patent: 5577962 (1996-11-01), Kounoe et al.
patent: 5670988 (1997-09-01), Tickle
patent: 5672108 (1997-09-01), Lam et al.

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