Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Reexamination Certificate
2007-12-18
2007-12-18
Monbleau, Davienne (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
C250S2140AL, C345S084000, C345S087000, C345S102000, C345S207000, C345S589000, C345S690000
Reexamination Certificate
active
11413329
ABSTRACT:
The invention discloses an apparatus for adjusting an output back light relative to the ith image frame among N image frames of an image sequence inputted to a display system. The apparatus includes an optical sensing module, a memory unit, an image processing module, and a back light module. The optical sensing module is used for sensing a current environmental light. The memory unit is used for storing a look-up table in which a plurality of environmental light values, a plurality of brightness ratios, and a plurality of back light adjusting parameters are recorded. Each of the environmental light values corresponds to the brightness ratios and the back light adjusting parameters, and each of the back light adjusting parameters corresponds to one of the brightness ratios. The image processing module is used for calculating a current brightness ratio relative to the ith image frame and for further determining the back light parameter in accordance with the current environmental light, the current brightness ratio, and the look-up table. The back light module is used for adjusting the output back light in accordance with the back light adjusting parameter.
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Huang Yu-Hsiang
Lee Hsin-Hung
Shiu Ming-Horng
Fortney Andrew D.
Monbleau Davienne
Quanta Computer Inc.
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