Method of lamp replacement warning for image projection...

Electric lamp and discharge devices: systems – Plural load device systems – Electric switch in the supply circuit

Reexamination Certificate

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C315S318000, C362S085000

Reexamination Certificate

active

06982529

ABSTRACT:
An apparatus is provided including an image projection lighting device. The image projection lighting device may be comprised of a base housing, a yoke, and a lamp housing. The lamp housing may be comprised of a lamp and a first light valve. The image projection lighting device may be further comprised of a communications port, a processing system, and a memory. A cutoff value representing an amount of accumulated operating time at which the lamp may begin to operate improperly may be stored in the memory. An accumulated value representing an actual accumulated amount of operating time of the lamp may also be stored in the memory. The processing system may prevent the lamp from operating when the accumulated value is within a limit of the cutoff value, unless the processing system grants a request for a variance.

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High End System Product Line 1997.
Catalyst Media in Motion, © 2002 High End Systems, Inc.

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