Igron Systems Inc.

Neodym Systems Inc

Juraj Krajci

Keith Kejser

The present invention provides a method and apparatus to be used to extend the range of a standard USB devices. An extended range hub is provided which comprises a Local Expander (LEX) and a Remote Expander (REX) which can be separated by up to, for example 100 metres. The method and apparatus permits USB devices to be more conveniently located and used.

Method and apparatus for extending the range of the universal serial bus protocol

A gas detector system comprises a controller and one or more remote gas sensors. The controller may be a standard personal computer running software for detecting the operational status of the gas sensors and signaling an alarm if the gas sensors indicate an alarm condition. The gas sensors may be connected to the controller by way of a universal serial bus. This architecture provides a gas detection system which can be very flexible and full-featured and yet inexpensive. The gas detectors may include detachable portable units which may be removed from their permanent locations to pinpoint the source of a gas leak or to provide routine monitoring of gas levels. The remote units may include data logging functions so that measurements of gas levels at various locations and times can be stored in the portable units for later transmission back to the controller.

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Coquitlam, Canada

Juraj Krajci