Iomega Corporation

Cirque Corporation

Rick L Johnson

Jon B Newman

William P Baker

David Lee Jolley

George E Gerpheide

Marty McDonald

A method and apparatus for providing accelerated X and Y axis position determination of a probe relative to a touchpad surface by enabling determination of the X and Y axis coordinates independent of each other. The apparatus of the present invention enables simplification of the electronics of the touchpad because fewer sense lines are required to achieve position resolution which is finer than the electrode pitch. Position determination is further accelerated because fewer position measurements are then required to compensate for such problems as probe symmetry duplication.

Method and apparatus for data input

A multiple interface input/output port allows communication between an interface bus of a peripheral device and any one of a plurality of different types of interface buses that may be provided in a host computer. An interface bus detection circuit detects which type of interface bus the peripheral device is connected to on the host computer, and communications are then routed through an appropriate interface adapter that enables communication between the interface buses of the peripheral device and host computer. The interface bus detection circuit compares signal levels on selected ones of the lines of the interface bus of the host computer to a reference potential to determine which of the selected lines are grounded. The circuit then identifies the type of interface bus to which it is connected based on the determination of which of the selected lines of the interface bus are grounded.

Multiple interface input/output port allows communication between the

Multiple interface input/output port for a peripheral device

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Ogden, UT, United States of America

Rick L Johnson