Appeal No. 95-4361
Application 08/043,320
8. A circuit arrangement for converting data in a YUV
format, representing a natural image, into displayable image data
in an RGB format comprising:
RAM storage means containing one or more lookup tables
of information representing products U and V components of pixel
elements in said natural image respectively multiplied by
predetermined constants;
means for applying addressing data to said RAM storage
means representing said U and V components of consecutive pixels
in said natural image scanned in a predetermined raster pattern;
and
logic means responsive to information read out of said
RAM storage means in response to said addressing data, and to
data representing Y image components corresponding to respective
said addressing data, for producing signals representing discrete
R, G and B attributes of displayable pixels corresponding to said
scanned natural image pixels.
The Invention
The invention is directed to a system for converting color
image data in a first format into a second format for display on
computer color monitors. The procedure is divided into two
stages, with the second stage taking as one of its inputs the
output from the first stage. First, product terms involving
components of the source data and predetermined constants are
generated by use of a programmable lookup table in a RAM, and
then the product terms are summed with another component of the
source by use of a logic means. The product terms are generated
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Last modified: November 3, 2007