Computer graphics processing and selective visual display system – Display peripheral interface input device – Mechanical control
Patent
1996-06-20
1997-12-30
Chow, Dennis-Doom
Computer graphics processing and selective visual display system
Display peripheral interface input device
Mechanical control
345157, 345169, G09G 500
Patent
active
057040370
ABSTRACT:
A cursor control device for controlling the movement and positioning of a cursor on a computer includes a finger controllable member formed on the cursor positioning device. The cursor on the display is controllable either in X-axis or Y-axis direction by means of sliding the finger controllable member on the device. The cursor positioning device includes a displacement detecting structure for detecting the movement of the finger controllable member, and photo encoder detectors for detecting the operating situation of the X-axis and Y-axis photo encoders which are arranged in 90 degrees phase deference in space. In such an arrangement, the displacement of the finger controllable member in X-axis and Y-axis direction may be detected as coordinate date. The detected coordinate data is transmitted to a control circuit for further processes and then sent to a computer device.
REFERENCES:
patent: 4670743 (1987-06-01), Zemke
patent: 5293158 (1994-03-01), Soma
patent: 5558808 (1996-09-01), Hsu
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