Lighting method, lighting apparatus and components used...

Details Lighting method, lighting apparatus and components used... Lighting method, lighting apparatus and components used...

2007-08-21

2007-08-21

Chen, Shih-Chao (Department: 2821)

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Impedance or current regulator in the supply circuit

C362S800000

Reexamination Certificate

active

10941101

ABSTRACT:
A current to light emitting devices when an application voltage is at or higher than the lower limit voltage for lighting determined by the arrangement of the light emitting devices, and an identification circuit that outputs a current identification signal in accordance with an appropriate current for the lighting circuit when the application voltage is lower than the lower limit value for lighting, and the power supply comprises a driving power supply that applies a lighting voltage at or higher than the lower limit voltage for lighting, an identification power supply that applies an identification voltage at or lower than the lower limit voltage for lighting, a current setter that sets an appropriate current to be supplied to the lighting circuit based on the current identification signal outputted from the identification circuit.

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patent: 6121757 (2000-09-01), Takahashi et al.
patent: 6853155 (2005-02-01), Yamamoto et al.
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patent: 2003/0139888 (2003-07-01), Burns
patent: 2003/0226954 (2003-12-01), Ohmi
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patent: 2000-6466 (2000-01-01), None
U.S. Appl. No. 10/806,178 to Toyota et al, Mar. 23, 2004.
U.S. Appl. No. 10/940,720 to Toyota et al, Sep. 15, 2004.

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