Telegraphy – Systems – Position coordinate determination for writing
Patent
1987-02-17
1988-05-24
Schreyer, Stafford D.
Telegraphy
Systems
Position coordinate determination for writing
340365P, 250221, 250224, G08C 2100, G01S 516
Patent
active
047467703
ABSTRACT:
A method of selection and/or manipulating graphic objects such as may appear on a computer video monitor is provided as is associated apparatus. A frame member cooperates with a plurality of optical sensors and a plurality of light occluding objects which tend to obstruct a portion of the light normally received by the optical sensors. The sensors are preferably dynamic RAM sensors. Determination of the position and orientation of the light occluding objects and, if desired, the velocity of the same, permits identification of or alteration of graphic objects. Fingers may be employed as the light occluding objects. This approach eliminates the need for burdensome identification of and changes to graphic objects through a computer keyboard or by means of a "mouse".
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Schreyer Stafford D.
Sensor Frame Incorporated
Silverman Arnold B.
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