| 摘要 |
PURPOSE: An LCD(Liquid Crystal Display) blacklight inverter is provided to realize a broadcast without a noise by accurately synchronizing 4-multiple frequency with a synchronous signal. CONSTITUTION: A video signal separator(51) separates brightness, color, and horizontal and vertical synchronous signals inputted from a tuner and an audio/video jack for outputting the separated signals. A 4-multiplier(52) converts the output horizontal synchronous signal into 4-multiple frequency for outputting a signal. An inverter(53) converts high potential and lower potential of the output signal of the 4-multiplier into a predetermined voltage, and boosts the predetermined voltage by a certain winding ratio for outputting a signal. A fluorescent lamp(54) is driven by the output signal of the inverter. |
