Patent ID: 7258446
Filing Date: 2007-08-21
Classification: F21V,G03B

Abstract:
1. An information handling system projector comprising: a housing; image processing components disposed in the housing and operable to accept information from an information handling system to generate a display of an image associated with the information; a lamp disposed in the housing, the lamp having an on state operable to illuminate the display of the image and an off state; a lens aligned with the image processing components and lamp to present the display of the image at a distal point; a cooling fan disposed in the housing and operable to provide cooling airflow that removes heat from the housing; and a cooling manager interfaced with the lamp and the fan, the cooling manager operable to run the cooling fan for a variably defined time period after the lamp changes from the on state to the off state, the cooling manager having a timer operable to track the time the lamp is operating in the on state and to track the time the cooling fan runs and having a cool down table with plural operating times, each lamp operating time representing time the lamp is in an on state and with plural variably defined times, each lamp operating time associated with a variably defined time; wherein the cooling manager determines the variably defined time to run the cooling fan after the lamp changes to the off state by reference to the timer to determine the time the lamp was operating in the on state and by reference to the cool down table for the variably defined time associated with the lamp operating time determined by the timer.