Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device
Patent
1997-09-30
1999-09-28
Luu, Matthew
Computer graphics processing and selective visual display system
Display peripheral interface input device
Cursor mark position control device
345163, 345164, G09G 508
Patent
active
059596147
ABSTRACT:
The present invention discloses a pointing control system for controlling rotations of an object within a three dimensional view. The three dimensional view comprises first axis and second axes which are perpendicular to each other. The pointing control system comprises an image displaying device for displaying the three dimensional view, a computer electrically connected to the displaying device and a pointing device electrically connected to the computer. The computer comprises a program for controlling image display of the displaying device and rotations of the object within the three dimensional view. The pointing device comprises a housing and a first pointing controller installed in the housing. The first pointing controller comprises: a ball rotatably installed inside of the housing; a first rod and a second rod rotatably installed in the housing and attached to the ball for interacting with the ball to detect rotations of the ball in two different directions; a first angle displacement detector for detecting rotations of the first rod and generating a corresponding first angle displacement signal; and a second angle displacement detector for detecting rotations of the second rod and generating a corresponding second angle displacement signal. When the program receives the first angle displacement signal, the program will transform the first angle displacement signal into a first rotation angle and then rotate the object along the first axis about the first rotation angle. And when the program receives the second angle displacement signal, the program will transform the second angle displacement signal into a second rotation angle and then rotate the object around the second axis for the second rotation angle.
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patent: 5095303 (1992-03-01), Clark et al.
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patent: 5477237 (1995-12-01), Parks
patent: 5563631 (1996-10-01), Masunaga
patent: 5565891 (1996-10-01), Armstrong
patent: 5619231 (1997-04-01), Shouen
Luu Matthew
Primax Electronics Ltd.
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