Computer graphics processing and selective visual display system – Display peripheral interface input device
Patent
1998-03-31
2000-08-01
Shalwala, Bipin
Computer graphics processing and selective visual display system
Display peripheral interface input device
345 63, 345147, 345148, G09G 328
Patent
active
060973684
ABSTRACT:
A digital display device, such as a plasma display or a digital micromirror device (DMD) based digital light projector, employs a minimum moving pixel distortion (MPD) set of codewords for reducing visually perceived artifacts viewed on a digital display device (PDP). The digital display device includes a minimum MPD mapping process, which maps by, for example, a ROM look-up table, corresponding present and previous pixel intensity values from first and second image frames into a preferred equalizing code value corresponding to the present pixel intensity value. An optimal set of equalizing codewords is determined by comparing objective measures of MPD error for each of a plurality of trial equalizing codewords and selecting the codeword having the smallest measure of MPD error. The optimal equalizing codewords are stored in a ROM lookup table which is addressed by the previous and current codewords. Each current codeword and its corresponding codeword from a previous frame are applied to the ROM lookup table which provides the corresponding equalized codeword. This equalizing codeword replaces the current codeword in the display data. The digital display device controller then provides the display data, line by line, to the digital display device (PDP) using a scan driver and a data driver. Once the display data is loaded into the PDP for an image, the digital display device controller enables the sustain pulse drivers to illuminate the addressed cells with the intended sustain pulse train encoded by the codeword.
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Leacock Thomas J.
Noecker James D.
Zhu Daniel Qiang
Kovalick Vincent E.
Matsushita Electric Industrial Company Ltd.
Shalwala Bipin
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