Electric lamp and discharge devices: systems – Current and/or voltage regulation
Reexamination Certificate
2007-06-07
2011-12-27
Owens, Douglas W (Department: 2821)
Electric lamp and discharge devices: systems
Current and/or voltage regulation
C315S308000, C315S312000, C315S360000, C345S590000, C345S591000, C345S592000, C345S593000, C345S597000
Reexamination Certificate
active
08084958
ABSTRACT:
Disclosed is an illumination system that includes a lamp assembly, a controller, a user input device, and a memory defining discrete color points and containing a ID hue table, a ID saturation table, a ID brightness table, and a boundary memory defining a boundary of the color space. On the basis of data received from the user input device and on the basis of the information in the memory, the controller generates color control signals for the lamp assembly. The controller compares the user input data with the information in the boundary memory. If the controller finds that said point is located outside the boundary of the color space, the controller calculates a replacement point on the color space boundary as defined in the boundary memory, and generates its control signals on the basis of the replacement point.
REFERENCES:
patent: 5254977 (1993-10-01), MacDonald
patent: 5299291 (1994-03-01), Ruetz
patent: 5334992 (1994-08-01), Rochat et al.
patent: 5384519 (1995-01-01), Gotoh
patent: 5991511 (1999-11-01), Granger
patent: 2005/0146734 (2005-07-01), Stokes et al.
Koninklijke Philips Electronics , N.V.
Owens Douglas W
Pham Thai
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