Optics: image projectors – Plural
Reexamination Certificate
2005-07-08
2009-11-17
Dowling, William C (Department: 2851)
Optics: image projectors
Plural
C353S085000, C348S745000, C345S001300
Reexamination Certificate
active
07618146
ABSTRACT:
Picture signals that indicate a screen that are supplied as output from a signal generation source are divided by a picture splitting device into picture signals of a plurality of screens for displaying a large screen and then supplied to a gradation conversion LUT unit in a luminance correction circuit. Based on display position information from a timing circuit, a coefficient arrangement control unit implements a non-linear arrangement of gain coefficients for gradation control that is carried out in picture element units. Based on the display position information from the timing circuit, the gradation conversion LUT unit adjusts display positions such that areas in which the projected display areas of the plurality of projectors overlap match with areas that are the objects of gradation conversion, and implements a luminance level conversion in picture element units of input signal levels of picture signals that have been split using the arrangement of gain coefficients for gradation control.
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Japanese Office Action dated Sep. 10, 2008 with Partial English Translation.
Dowling William C
McGinn Intellectual Property Law Group PLLC
NEC Viewtechnology Ltd.
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