The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 20, 1998
Filed:
May. 24, 1996
Applicant:
Inventors:
Assignee:
VLSI Technology, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
345161 ; 345156 ; 345157 ;
Abstract
A joystick system provides a digital representation of the setting of a joystick potentiometer. The voltage of the joystick is supplied to an analog-to-digital converter, the output of which then is used to load a counter. In one mode of operation, the counter counts down to zero at some multiple of the sample rate. When the counter reaches zero, the time interval representative of the joystick position is indicated; and this output is indicative of the joystick position. In an alternative mode of operation, the counter is used as a data latch and the joystick position is digitally read from the counter, which keeps the data latched until the next sample cycle from the joystick position.