Method and apparatus for moving pixel distortion removal for a p

Details Method and apparatus for moving pixel distortion removal for a p Method and apparatus for moving pixel distortion removal for a p

1997-06-13

1998-11-24

Hjerpe, Richard A.

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345 60, 345 67, G09G 328

Patent

active

058414134

ABSTRACT:
A plasma display device employs a minimum moving pixel distortion (MPD) set of codewords for reducing visually perceived artifacts viewed on a plasma display panel (PDP). The plasma display device includes a minimum MPD mapping process, which maps by, for example, a ROM look-up table, received pixel intensity values into intensity levels corresponding to selected ones of the set of codewords. By increasing the number of subfields (or rounding the least significant bits (LSBs) of the intensity pixels), redundant codewords that express pixel intensities can be generated based on the sustain pulse vector with predetermined constraints. An optimal set of codewords can be determined though (1) a random search; (2) an exhaustive search; (3) dynamic programming or (4) a genetic algorithm based search which minimizes the MPD distance. The mapped codewords are stored in a ROM lookup table as display data by a plasma display controller. The plasma display controller then provides the display data, line by line, to the plasma display panel (PDP) using a scan driver and a data driver. Once the display data is loaded into the PDP for an image, the plasma display controller enables the sustain pulse drivers to illuminate the addressed cells with the intended sustain pulse train encoded by the codeword.

REFERENCES:
patent: 5436634 (1995-07-01), Kanazawa et al.
Nakamura, T. et al. "Drive for 40 inch Diagonal Full Color AC Plasma Display" vol. XXVI, pp. 807-810 SID International Symposium Digest of Technical Papers, May 1995.

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