Miniature isometric joystick

Details Miniature isometric joystick Miniature isometric joystick

1996-07-24

1999-03-30

Nguyen, Chanh

Computer graphics processing and selective visual display system

Display peripheral interface input device

Cursor mark position control device

345168, G09G 508

Patent

active

058895078

ABSTRACT:
A miniature isometric joystick is disclosed for receiving manual user input to effect directional control such as controlling cursor movement on a computer display screen or controlling movement of an apparatus such as a machine or robot. The joystick is arranged to fit between the existing keys in a computer keyboard. The joystick includes a preloading spring for compressing the assembly together, thereby biasing the force sensors so as to neutralize manufacturing variations and control electrical and mechanical null zones. An integrated switch is provided in the joystick for detecting an external force applied by the user's fingertip. The switch unobtrusively detects when a user is pointing, thereby allowing a control system to measure pointing system bias signals while the user is not pointing. This permits the control system to automatically correct for drift, without requiring additional keyboard space for a separate switch to enable the pointing device.

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