Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit – Plural cathodes or heaters in the load device
Reexamination Certificate
2009-03-30
2011-12-06
Tan, Vibol (Department: 2819)
Electric lamp and discharge devices: systems
With cathode or cathode heater supply circuit
Plural cathodes or heaters in the load device
C315S105000, C315S106000, C315S116000, C315S287000, C345S102000, C336S222000, C336S221000
Reexamination Certificate
active
08072148
ABSTRACT:
A fluorescent-lamp-driving device contains a driving control circuit that receives direct current power voltage and a lamp control signal for performing drive control on fluorescent lamps and converts the direct current power voltage to alternating current power voltage, and a transformer containing a winding at its primary side and windings for driving a heater and for maintaining discharge at its secondary side. The alternating current power voltage is supplied to heaters of the fluorescent lamps at their high electric potential side. The driving control circuit increases the frequency of the alternating current power supply to a frequency thereof in which voltage of the fluorescent lamps is equal to a discharge start voltage of the fluorescent lamps or less based on the lamp control signal at a period of starting-up time of the fluorescent lamps.
REFERENCES:
patent: 6211619 (2001-04-01), Nilssen
patent: 6324081 (2001-11-01), Sakamoto et al.
patent: 7436128 (2008-10-01), Cheng et al.
patent: 7514878 (2009-04-01), Crandall et al.
patent: 7696702 (2010-04-01), Iwai
patent: 63-190297 (1988-08-01), None
patent: 64-003996 (1989-01-01), None
patent: 02-276195 (1990-11-01), None
patent: 06-045079 (1994-02-01), None
patent: 08-017581 (1996-01-01), None
patent: 2001-185383 (2001-07-01), None
patent: 2001-338790 (2001-12-01), None
patent: 2003-249391 (2003-09-01), None
Sony Corporation
Tan Vibol
Wolf Greenfield & Sacks P.C.
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