Pointing and/or directional control device for controlling the m

Details Pointing and/or directional control device for controlling the m Pointing and/or directional control device for controlling the m

1994-08-02

1997-06-03

Hofsass, Jeffery

Coded data generation or conversion

Bodily actuated code generator

345162, 74471XY, G09G 302

Patent

active

056359268

ABSTRACT:
The present invention provides a pointing and/or directional control device for controlling movement and positioning of an object in at least two dimensions which, in the preferred embodiment, forms a cursor control device for use in a computer system. The device comprises at least a cylindrical roller disposed in a recess of keyboard housing proximate and substantially parallel to the space bar key of the keyboard, a first decoder comprising a first disc coupled to the roller with gearing to impart rotational movement to the first disc upon sliding of the roller laterally from end to end and a sensor coupled to the first disc for generating electronic signals corresponding to the magnitude and direction of disc rotation, a second decoder comprising a second disc coupled to the roller with gearing to impart rotational movement to the second disc upon rotation of the roller about its longitudinal axis and a sensor coupled to the second disc for generating electronic signals corresponding to the magnitude and direction of disc rotation and signal conversion circuitry for receiving the electronic signals output by the first and second decoders and generating as output tracking signals to control the movement and positioning of the object.

REFERENCES:
patent: 5270690 (1993-12-01), Oberg
patent: 5448240 (1995-09-01), Morita

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