Patent ID: 8339388
Filing Date: 2012-12-25
Classification: G09G

Abstract:
1. A method for controlling a power recovery stage of a plasma display panel comprising a resonant circuit of at least one inductive element and one capacitive element, said method comprising at least one step of precharge of the capacitive element to half a supply voltage of the display panel, by a controllable current source, wherein a first terminal of the capacitive element is connectable through switches to a non-panel side of the inductive element and wherein the current source is connected between a supply voltage terminal and the first terminal of the capacitive element, wherein the switches connecting the capacitive element to the inductive element are turned off and current does not flow through the inductive element during at least part of the precharge of the capacitive element by the current source, so that the capacitive element is precharged by the current source without current flow through the inductive element at least until a voltage across the capacitive element has reached a first threshold depending on the supply voltage.