Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device
Patent
1998-03-12
2000-07-04
Liang, Regina
Computer graphics processing and selective visual display system
Display peripheral interface input device
Cursor mark position control device
463 38, G09G 508
Patent
active
060845732
ABSTRACT:
An analog joystick interface system for overcoming the deficiencies of the conventional analog joystick interface by supporting positional tracking in both a legacy and an enhanced mode. In the legacy mode, the host calculates the relative physical orientation of a positional grip of an analog joystick by relying upon continuous polling techniques. In the enhanced mode, a watch dog timer relieves the host of the need to continuously poll by directly providing the host with positional data concerning the relative physical orientation of the positional grip. The ability of the joystick interface to provide both the legacy and enhanced modes ensures that compability issues concerning the legacy DOS-based software applications and CPU allocation problems associated with continuous polling are resolved without considerably increasing cost or complexity of the joystick interface.
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Duran Francisco L.
Tng Seng-Khoon
Tsai Winston
Liang Regina
S3 Incorporated
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