Computer graphics processing and selective visual display system – Display driving control circuitry – Display power source
Reissue Patent
2005-05-20
2009-06-23
Shankar, Vijay (Department: 2629)
Computer graphics processing and selective visual display system
Display driving control circuitry
Display power source
C345S089000, C345S212000, C345S690000
Reissue Patent
active
RE040773
ABSTRACT:
A drive circuit has a judgement circuit for judging whether the magnitude of the input video data resides in a linear region or the non-linear region of characteristic of liquid crystal transmittance. When the vide data resides within the linear region, some of the output gray-scale voltage for the LCD are generated by interpolation of adjacent two of the gray-scale voltages generated by a voltage generator. The reduced gray-scale voltage taps reduces the circuit scale and the test procedures for the drive circuit.
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Korean Office Action with Japanese Translation and Partial English Translation.
Saito and Kitamura, “17.3: A 6-bit Digital Data Driver for Color TFT-LCDs”, Society for Information Display (SID) International Symposium digest of technical papers, vol. XXVI, pp. 257-260 (1995).
McGinn IP Law Group PLLC
NEC Electronics Corporation
Shankar Vijay
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