Thomas N Nguyen

US Patent:

20030095648, May 22, 2003

Filed:

Nov 27, 2002

Appl. No.:

10/305515

Inventors:

Thomas Kaib - North Huntingdon PA, US
Thomas Nguyen - Pittsburgh PA, US
Edward Donnelly - Allison Park PA, US

Assignee:

LIFECOR, Inc. - Pittsburgh PA

International Classification:

H04M011/00

US Classification:

379/106020

Abstract:

A method of remotely updating or upgrading the operating parameters of the wearable medical device is also provided. The method will automatically update the operational software of the device during a data download sequence. During such a download sequence, after the data has been downloaded, a remote server at the remote location will query the device's current operating software version which is stored in a main memory area of the device. If a software upgrade is needed, the method will clear an alternate memory area in the device. The remote server will then begin downloading the new (upgraded) operating software to the medical device where it will be stored in an alternate memory area. After downloading is complete, the integrity of the new operating software in the alternate memory area is verified by performing a cyclic redundancy check (CRC) or other error checking method If the new operating software passes verification, the method will add a new entry to a boot vector table in the device that will cause the medical device to execute the new operating software located in the alternate memory area during the next power-up sequence. The medical device will continue to execute its current operating software version until the device power is cycled. The new operating software will self-install during the next power-up sequence. In the event of a failure during the updating sequence, a valid operating software image is always available from either the main or alternate memory areas.