Psion Teklogix Inc.

Psion Inc.

Keith Baker

Larry Forsythe

Lawrence David Forsythe

Marija Gajic-Mancic

A system for providing backup power supply to a device is provided. The system includes a supercapacitor and a single circuit for charging and discharging of a supercapacitor. The single circuit operates with an inductor to provide for charging and discharging of the supercapacitor.

Supercapacitor backup power supply with bi-directional power flow

A multi-protocol port interface coupled to a plurality of selectable circuits, each of the circuits being associated with an electrical interface standard and selectable via a mode-select input signal in order to facilitate communication with a peripheral device coupled to the port, the peripheral device having a circuit chosen from the plurality of selectable circuits and associated with an electrical interface standard.

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Belfountain, Canada

Keith Baker