Methods for operating input devices for personal computer systems

Abstract

Methods for operating hand-held input devices for controlling a visual indicator on a computer system display. In one embodiment, an input device includes a body configured to face a support structure, a projecting member extending between the body and the support structure, and a position sensor operatively connected to the projecting member. The body includes a bottom section configured to move over the support structure and a top section having a contoured surface configured to engage a palm of a hand. The projecting member can have a first portion connected to either the body or the support structure, and a second portion projecting from the first portion toward the other of the body or the support structure. For example, the projecting member can be a rod having a first end pivotally connected to the body and a second end engaged with the support structure such that the second end is inhibited from moving with respect to the support structure. In this embodiment, the position sensor is attached to the body. As the body moves over the support structure, the projecting member moves with respect to the position sensor. The position sensor accordingly detects the relative displacement and velocity of the projecting member, and signals the computer to control the pointer on the display corresponding to the relative movement between the body and the support structure.