Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device
Patent
1994-04-25
1995-01-03
Oberley, Alvin E.
Computer graphics processing and selective visual display system
Display peripheral interface input device
Cursor mark position control device
345167, 74471X, G09G 302
Patent
active
053790545
ABSTRACT:
When keyboard 1 is set on the upper side, ball 10 is inserted between stopper 8 and the coordinate converting unit 4. As a result, the coordinate converting unit 4 is fixed by ball 10. When the user moves the pointing device on the flat surface, the ball 6 then moves according to the user's operation. Furthermore, when the user pushes keyboard 1, detecting switch 7 is pressed by protrusion 3, and then detecting switch 7 is switched to the ON state. On the other hand, when the pointing device is set upside down by the user, ball 10 moves to the opposite side via gravitation. The ball 10 is inserted between stopper 8 and keyboard 1 and, as a result, keyboard 1 is fixed by ball 10. When the user spins ball 6, the ball moves in all directions in accordance with the user's operation. Furthermore, when the user pushes coordinate converting unit 4, detecting switch 7 is pressed by protrusion 3, and then detecting switch 7 is switched to the ON state.
REFERENCES:
patent: 4562347 (1985-12-01), Hovey et al.
patent: 5063289 (1991-11-01), Jasinski et al.
Ito Yoshiyuki
Tanaka Shinya
Ascii Corporation
Liang Regina
Oberley Alvin E.
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