Data conversion circuit having look-up table and...

Details Data conversion circuit having look-up table and... Data conversion circuit having look-up table and...

2005-08-22

2010-11-16

Wu, Xiao M (Department: 2628)

Computer graphics processing and selective visual display system

Computer graphics processing

Attributes

C345S616000

Reexamination Certificate

active

07834889

ABSTRACT:
Data conversion circuits and methods of data conversion that enable to keep the continuity in the converted data while reducing a required memory capacity are disclosed. An exemplary conversion circuit includes a LUT that stores representative correction values and an interpolation circuit that generates conversion data by interpolating from representative correction values stored in cells of the LUT that surround an address corresponding to the combination of input signal levels. When the cells that surround the address include a pair of adjacent cells arranged along both sides of a diagonal line of the LUT, the interpolation circuit substitutes one of the representative correction values with a substituted representative correction value that indicates an opposite direction and a same amount of correction as indicated by the other one of the representative correction values stored in the adjacent cells, and then generates the conversion data.

REFERENCES:
patent: 6853384 (2005-02-01), Miyata et al.
patent: 2002/0050965 (2002-05-01), Oda et al.
patent: 2003/0179175 (2003-09-01), Shigeta et al.
patent: 2003/0210217 (2003-11-01), Lee
patent: 2004/0070590 (2004-04-01), Lee et al.
patent: 2005/0062702 (2005-03-01), Lee et al.
patent: 10-39837 (1998-02-01), None

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