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:
Sep. 19, 2000
Filed:
Dec. 03, 1997
Shu-Ming Liu, Taipei, TW;
Primax Electronics Ltd., Hsien, TW;
Abstract
The invention discloses a computer joystick having two optical sensors to generate vector signals for indicating the current position of the joystick's handle. The computer joystick comprises a housing having an opening at its top, two mutually perpendicular shafts rotatably installed inside the housing, a joystick handle rotatably installed in the opening of the housing, an engaging means mounted at a bottom end of the joystick handle for rotatably engaging the two shafts, two optical sensors installed in the housing close to the two shafts for detecting rotations of the two shafts and generating corresponding displacement signals, and a control circuit having a memory for storing a coordinate as a position of the joystick handle, and a processor wired to the two optical sensors for updating the coordinate of the joystick handle according to the displacement signals generated by the two optical sensors and generating vector signals according to the coordinate of the joystick handle to indicate the current position of the joystick handle.