Modular assembly for a self-indexing computer pointing device
View Patent ↗A pointing device having a puck sub-assembly and a base sub-assembly is disclosed. The puck sub-assembly includes a moveable puck having a user sensor that detects the interaction of a user and the puck. The puck is confined to move within a puck field of motion. The puck sub-assembly includes a support member having an opening therein that determines a boundary for the puck field of motion. The base sub-assembly includes a base surface over which the puck moves, a position detector that measures the position of the puck in the puck field of motion, and an attachment mechanism. The attachment mechanism connects the base sub-assembly to the puck sub-assembly such that the puck sub-assembly is easily removed. The base surface is accessible when the puck sub-assembly is separated from the base assembly. The puck sub-assembly can also include a restoring mechanism that returns the puck to a predetermined area.
1. A pointing device comprising:
a puck sub-assembly comprising:
a moveable puck confined to move within a puck field of motion;
a support member having an opening therein that determines a boundary for said puck field of motion; and
a first electrical contact;
a base sub-assembly comprising:
a base surface over which said puck moves;
a position detector that measures the position of said puck in said puck field of motion; and
a second electrical contact that mates with said first contact for making an electrical connection between said puck sub-assembly and said base sub-assembly; and
an attachment mechanism for connecting said base sub-assembly to said puck sub-assembly such that said puck sub-assembly is reversibly separable from said base assembly, and said base surface is accessible when said puck sub-assembly is separated from said base assembly.
2. The pointing device of claim 1 wherein said moveable puck includes a user sensor that detects the interaction of a user and said puck.
3. The pointing device of claim 1 wherein said base sub-assembly is separable from said puck sub-assembly without the use of tools.
4. The pointing device of claim 1 wherein said puck sub-assembly further comprises a restoring mechanism that returns said puck to a predetermined area in said puck field of motion.
5. The pointing device of claim 4 wherein said restoring mechanism comprises a spring connected to said puck.
6. The pointing device of claim 1 wherein said puck is electrically connected to said first contact through a spring that returns said puck to a predetermined area in said puck field of motion.
7. The pointing device of claim 1 wherein said position sensor comprises a plurality of surface electrodes on said surface and a puck electrode that moves with said puck.
8. The pointing device of claim 1 wherein said base sub-assembly is attached to a portable host apparatus.
9. The pointing device of claim 1 wherein said base sub-assembly is integral with a portable host apparatus.