Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Reexamination Certificate
2007-10-23
2007-10-23
Luu, Thanh X. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
C345S076000, C345S082000, C345S084000
Reexamination Certificate
active
11258364
ABSTRACT:
A video correction circuit of the invention includes an detection unit for detecting the cumulative light-emission frequency data on each pixel by sampling video data supplied to a display device having a plurality of pixels; a cumulative data storage unit for storing the cumulative light-emission frequency data on each pixel; an adder for adding the cumulative light-emission frequency data on each pixel detected by the detection unit to the cumulative light-emission frequency data on each pixel stored in the cumulative data storage unit, thereby writing the result to the cumulative data storage unit as new cumulative light-emission frequency data; and a correction unit for correcting the video data based on the cumulative light-emission frequency data stored in the cumulative data storage unit, thereby outputting the corrected video data to the pixel portion. The pixels are provided with light-emitting elements of a plurality of colors. The cumulative light-emission frequency data is divided into a plurality of data fragments, each of which is stored in each of the plurality of memories for each color of the light-emitting elements.
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Luu Thanh X.
Robinson Eric J.
Robinson Intellectual Property Law Office P.C.
Semiconductor Energy Laboratory Co,. Ltd.
Yam Stephen
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