Discharge lamp lighting apparatus

Details Discharge lamp lighting apparatus Discharge lamp lighting apparatus

2006-04-04

2006-04-04

Lee, Wilson (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S308000

Reexamination Certificate

active

07023146

ABSTRACT:
A discharge lamp lighting apparatus has a problem that a microcomputer within the apparatus falls down into malfunction due to noises generated in an inside thereof. With such the structure of the discharge lamp lighting apparatus that an operation of a calculation processing circuit, which is built up with the microcomputer, etc., is stopped through stopping the supply of electric power to the calculation processing circuit or bringing it into a sleep mode, it is possible to protecting it from the malfunction, during a time period when high voltage is generated just after starting of lighting of the discharge lamp. Also, with applying a protection processing by means of the calculation processing circuit and also applying an analog protection circuit, in common with, thereby it is possible to ensure reliability thereof further.

REFERENCES:
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patent: 5910712 (1999-06-01), Toyama
patent: 6100642 (2000-08-01), Kim
patent: 6333607 (2001-12-01), Yamamoto et al.
patent: 6853155 (2005-02-01), Yamamoto et al.
patent: 5-74583 (1993-03-01), None
patent: 8-8076 (1996-01-01), None

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