Hewlett-packard Company

William A Cox

James E Obert

James M Sangroniz

Charles K Keyes

The invention is utilized in the context of a peripheral device that is coupled to a network via a firewall which blocks unwanted incoming message traffic, except for incoming message traffic that is responding to a message dispatched from the peripheral device. A remotely located diagnostic device, which includes code for diagnosis of causes of peripheral device malfunctions, is connected to communicate via the network. The peripheral device includes a memory for storing a diagnostic application that is adapted to execute one or more diagnostic subroutines for diagnosing a cause of a device malfunction. The peripheral device is enabled to dispatch an event message to the remote diagnostic device and to receive a response message from the remote diagnostic device (all via the firewall and the network). The response message causes a diagnostic application to execute a subroutine on the peripheral device in an attempt to determine the cause of the event. In the case where the remote diagnostic device is adapted to download an executable diagnostic subroutine, the peripheral device executes the diagnostic subroutine.

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Boise, ID, United States of America

William A Cox