AUTOMATIC WHITE BALANCE SYSTEM AND METHOD THEREOF
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United States of America Patent
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Issued Date -
Nov 25, 2010
app pub date -
May 20, 2009
filing date -
May 20, 2009
priority date (Note) -
Abandoned
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Abstract
An automatic white balance (AWB) system including a luminaire, a light sensing unit, an analog-to-digital converter, a control unit and a driving circuit is provided. In the AWB system of a projection apparatus, the suitable AWB method is applied. The light sensing unit includes a light sensor and a light sensing circuit. The light sensor is coupled to the light sensing circuit for sensing intensity of the color lights emitted from the luminaire, no matter what colors the color lights emitted from the luminaire are. The white balance of the color lights in the AWB system of the projection apparatus is automatically achieved with the light sensor instead of the color sensors. Therefore, the cost of the projection apparatus with the AWB system is reduced.
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