Power supply device of video display apparatus and method...

Details Power supply device of video display apparatus and method... Power supply device of video display apparatus and method...

2006-10-24

2006-10-24

Yenke, Brian P. (Department: 2622)

Television

Receiver circuitry

Power supply

C345S211000, C345S212000, C307S126000, C307S140000, C363S021010

Reexamination Certificate

active

07126647

ABSTRACT:
A power supply device of a video display apparatus and a method thereof is capable of improving operation reliability of a video display apparatus, preventing erratic operation of the video display apparatus caused by higher harmonics and preventing erratic operation of other apparatus caused by unnecessary transmitted radiative wave. The power supply device can include a rectifying section for converting AC power into DC power, a harmonic suppressor for cutting off higher harmonics included in the DC power and a smoothing circuit for smoothing the higher harmonics cut-off DC power. A standby power supplier is for supplying the smoothed DC power to the video display apparatus as standby power, a main power supplier is for supplying the smoothed DC power to the video display apparatus as main power and a control unit is for controlling an operation of the harmonic suppressor.

REFERENCES:
patent: 5477729 (1995-12-01), Cavalloni
patent: 5771164 (1998-06-01), Murai et al.
patent: 6272030 (2001-08-01), Oomura
patent: 6362980 (2002-03-01), Ohashi et al.
patent: 6469479 (2002-10-01), Kim
patent: 6661680 (2003-12-01), Maruoka
patent: 2005/0243081 (2005-11-01), Cha et al.

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