Interrupt based positioning system for joysticks and method ther

Details Interrupt based positioning system for joysticks and method ther Interrupt based positioning system for joysticks and method ther

1996-09-20

1998-03-24

Bayerl, Raymond J.

Computer graphics processing and selective visual display system

Display peripheral interface input device

Cursor mark position control device

345162, G09G 508

Patent

active

057318069

ABSTRACT:
An interrupt based positioning system for a joystick. A potentiometer is coupled to the joystick for supplying a voltage signal representative of a current position of the joystick. An analog-to-digital converter changes the voltage signal to a digital voltage signal which is then stored in a register. Interrupt generation logic monitors the output of the register and generates a position interrupt signal when the digital voltage signal stored in the register indicates a change in the axial position of the joystick.

REFERENCES:
patent: 4721308 (1988-01-01), Trimble
patent: 5261054 (1993-11-01), Lerner et al.
patent: 5593350 (1997-01-01), Bouton et al.

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