Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device
Patent
1995-06-26
1997-09-16
Nguyen, Chanh
Computer graphics processing and selective visual display system
Display peripheral interface input device
Cursor mark position control device
345167, G09G 508
Patent
active
056685742
ABSTRACT:
A palm-top wireless trackball including a mainframe to hold a circuit board on the inside, a hand-hold portion defined within said mainframe and having two smoothly curved opposite sides fitting the palm and the finger cushions, an operation area in the hand-hold portion, a smoothly curved stop flange raised from the bottom of the operation area, a transverse groove adjacent to the stop flange for resting the middle finger, and a transparent shade covered on the operation area to hold a transmitter on the inside, permitting the transmitter to be controlled by the circuit board, a circular ball holder raised from the top side of the operation area to hold a trackball for permitting the trackball to be rotated within the ball holder to trigger the circuit board in sending a corresponding radio signal through the transmitter, a drag key disposed in front of the smoothly curved stop flange and connected to the circuit board for operation by the forefinger, and an enter key transversely mounted on the hand-hold portion around the ball holder and connected to the circuit board for operation by the thumb.
REFERENCES:
patent: Re34931 (1995-05-01), Duchon
patent: 5162780 (1992-11-01), Solhjell
patent: 5506605 (1996-04-01), Paley
patent: 5539479 (1996-07-01), Bertram
Chung-Chin Chen
Nguyen Chanh
LandOfFree
Palm-top wireless trackball does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Palm-top wireless trackball, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Palm-top wireless trackball will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-221721