Patent ID: 8810138

Claim:
A method of operating an illumination system, the method comprising: processing by at least one control subsystem information indicative of a number of levels of illumination in an environment sensed by at least one sensor at respective ones of a plurality of times during each of a plurality of daily cycles; the processing by the at least one control subsystem including: determining a time of a first event during a first one of the daily cycles based at least in part on each of a plurality of levels of illumination sensed in the environment during the first one of the daily cycles by the at least one sensor; storing the information indicative of the sensed levels of illumination in at least one nonvolatile storage medium; determining at least a first illumination adjustment time with reference to a clock of the control subsystem at which to adjust a level of illumination produced by at least one illumination source during a current one of the plurality of daily cycles based at least in part on the determined time of the first event during the first one of the daily cycles and filtering out information corresponding to a short term event from the information based on at least one threshold value that specifies a minimum duration; and adjusting the level of illumination produced by the least one illumination source responsive to the occurrence of the determined at least one illumination adjustment time as indicated by the clock of the control subsystem.