Electric lamp and discharge devices: systems – Plural power supplies – Plural cathode and/or anode load device
Reexamination Certificate
2008-04-08
2008-04-08
Lee, Wilson (Department: 2163)
Electric lamp and discharge devices: systems
Plural power supplies
Plural cathode and/or anode load device
C315S169300, C345S060000
Reexamination Certificate
active
07355350
ABSTRACT:
An energy recovery circuit for a plasma display panel charges a panel capacitor using energy within an inductor and recovers the energy from the panel capacitor. The energy recovery circuit supplies the panel capacitor with a clamping voltage enabling a potential of the panel capacitor to be constantly maintained. A controller controls the energy recovery circuit to supply the clamping voltage to the panel capacitor within a period taken to discharge a current of the inductor from a maximum value to a current level greater than zero. The charging timing point of the panel capacitor occurs prior to the current ILof the inductor L being discharged to zero and/or prior to the panel capacitor Cp being charged up to the sustain potential Vs.
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Jung Yun Kwon
Park Joong Seo
Cabucos Marie Antoinette
Lee Wilson
LG Electronics Inc.
McKenna Long & Aldridge LLP
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