Ball zur Verwendung in einer Zeigeeinrichtung und Zeigeeinrichtung

摘要

A cursor control device for personal computers and workstations includes a dual-layer ball (2400) having an inner layer (2402) with a rough textured surface and an outer layer (2404) with a substantially smooth surface. The movement of the rough inner layer is detected using a sensor system. Circuitry of the sensor system determines movement of the rough inner layer and translates that movement into conventional cursor control signals supplied to a host system.