Controlling a light assembly

Details Controlling a light assembly Controlling a light assembly

2006-10-10

2006-10-10

Chen, Shih-Chao (Department: 2821)

Electric lamp and discharge devices: systems

Condenser in the supply circuit

Inductance in the condenser circuit

C315S291000

Reexamination Certificate

active

07119495

ABSTRACT:
A method and apparatus for operating a light assembly with fewer peripheral devices than is currently required is presented. The apparatus of the invention includes a lamp unit, a current restricting unit coupled to the lamp unit, and a current sensing unit that is coupled to the current restricting unit. Upon detecting a current output exceeding a predetermined magnitude for at least a predetermined time period, the current restricting unit increases the load on one of the lamps. The current sensing unit senses the output from each of the lamps as modified by the current restricting unit, and sums the outputs to determine a total current flow through the lamps. A current control unit that is coupled to the current sensing unit uses the total current flow to adjust the current input to the lamps.

REFERENCES:
patent: 4162429 (1979-07-01), Elms et al.
patent: 4350934 (1982-09-01), Spreadbury
patent: 4421993 (1983-12-01), Bloomer
patent: 4501994 (1985-02-01), Spreadbury
patent: 5004892 (1991-04-01), Goessler et al.
patent: 5973455 (1999-10-01), Mirskiy et al.
patent: 6259615 (2001-07-01), Lin
patent: 6362575 (2002-03-01), Chang et al.
patent: 6396722 (2002-05-01), Lin
patent: 6472876 (2002-10-01), Notohamiprodjo et al.
patent: 6841952 (2005-01-01), Lee
patent: 2003/0057888 (2003-03-01), Archenhold et al.
patent: 2003/0098861 (2003-05-01), Nakatsuka et al.
patent: 1 022 932 (2000-07-01), None
patent: 2 467 441 (1980-10-01), None
patent: WO 02/32196 (2002-04-01), None
European Search Report dated Nov. 8, 2004.
Office Action mailed on Dec. 15, 2005 corresponding to the related European Patent Application No. 04 004 475.2-2206.

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