Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device
Reexamination Certificate
1998-08-25
2001-07-03
Shalwala, Bipin (Department: 2673)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Cursor mark position control device
C345S156000, C345S163000, C345S167000, C345S168000
Reexamination Certificate
active
06256012
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates in general to joystick pointing devices and in particular to an improved pointing device.
2. Description of Related Art
Joysticks are known in the art such as shown by DeVolpi U.S. Pat No. 5,675,309 entitled “Curved Disc Joystick Pointing Device”, and copending CIP application thereof, Ser. No. 08/496,433, filed Oct. 6, 1997.
OBJECTS AND ADVANTAGES
Accordingly, several objects and advantages of my invention are that the uninterrupted curved disc pointing device can be assembled in mass production at a consistent quality and uniformity. Second, the amount of force needed to deflect is also reduced greatly giving increased user controllability as well as the added increased active PCB surface area for greater or maximum resolution.
Still further objects and advantages will become apparent from a consideration of the ensuing description and accompanying drawings.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide an improved joystick pointing device that has the advantage of lower cost, higher reliability, and quicker and more accurate response with fewer parts.
The present invention comprises a pointing device with a combination of conductive contacts and resistive contacts on the substrate that cover the maximum surface area that the disc makes contact with when the disc has an external force applied. The disc will pivot and act like a movable fulcrum point.
Another feature of the present invention is to reduce the number of components that are a bottleneck for mass production and allow for production by automated machinery with high quality.
Other objects, features and advantages will be readily apparent from the following description of certain preferred embodiments thereof taken in conjunction with the accompanying drawings although variations and modifications may be effected without departing from the spirit and scope of the novel concepts of the disclosure.
REFERENCES:
patent: 4493219 (1985-01-01), Sharp et al.
patent: 5473126 (1995-12-01), Wu
patent: 5488206 (1996-01-01), Wu
patent: 5555004 (1996-09-01), Ono et al.
patent: 5675309 (1997-10-01), DeVolpi
patent: 5828363 (1998-10-01), Yaniger et al.
patent: 5912612 (1999-06-01), DeVolpi
patent: 5949325 (1999-09-01), Devolpi
patent: 6043806 (2000-03-01), Atwell
U.S. application No. 08/939.377, Schrum et al., filed Sep. 29, 1997.
Kovalick Vincent E.
Shalwala Bipin
Townsend and Townsend / and Crew LLP
Varatouch Technology Incorporated
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