摘要 |
<p>A video display device and its control method are provided to prevent an element from being damaged by preventing power supply to the element although a color wheel is not synchronized with an image signal for longer than a certain time. A light source unit(120) emits light. A wheel unit(130) includes a color wheel which has a plurality of color regions for converting light emitted by the light source unit into color light and rotates. A display unit(150) allows the color light converted by the plurality of color regions to be projected thereon to display an image. A power supply unit(170) supplies power to the light source unit and the wheel unit. A controller(180) controls rotation of the color wheel to allow the color regions to be synchronized with color information included in an image signal. If a certain reference time lapses in a state that the color regions are not synchronized with the color information, the controller controls the power supply unit not to supply power to at least one of the light source unit and the wheel unit.</p> |