Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2005-02-15
2005-02-15
Awad, Amr (Department: 2675)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S600000, C345S690000, C345S088000, C348S678000
Reexamination Certificate
active
06856306
ABSTRACT:
A display data processing circuit and liquid crystal display device are provided which are capable of performing conversions between input display data and output display data even with reduced memory capacity. The display data processing circuit includes a storing section to store a power value of a decimal portion of a coefficient setting value, processing section to calculate a power value of an integral portion of the coefficient setting value and to perform a multiplication among the value obtained by the calculation, a value read from the storing section, and a number of gray-scale levels of the input display data, and a look-up table to convert a gray-scale value of input display data to a gray-scale value of output display data based on the coefficient setting value by storing values corresponding to all gray-scale values that the input display data can take on and by reading the value obtained from multiplication by the processing section corresponding to gray-scale values of input display data.
REFERENCES:
patent: 5555360 (1996-09-01), Kumazaki et al.
patent: 5745087 (1998-04-01), Tomiyoshi et al.
patent: 6414664 (2002-07-01), Conover et al.
patent: 6700559 (2004-03-01), Tanaka et al.
Awad Amr
Choate Hall & Stewart
NEC LCD Technologies Ltd.
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