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Article: Square eyes
By Darco | April 6, 2008
It is all about the user experience, as Harm van der Heijden and Jacco van Gurp, discuss in view of HDTV.
Large-area high-definition LCD TV panels have transformed the shape of television, opening up new opportunities for set styling and a vastly improved viewing experience. They have also presented set-makers with significant challenges, not least of which is overcoming the fact that an LCD’s sample-and-hold effect emphasizes motion judder. This motion artifact is particularly noticeable when displaying picture content derived from cine film, but the effect also causes significant motion blurring of 50-Hz or 60-Hz TV picture content.
“The basic problem is that high-definition TV pictures are so crisp, sharp and full of contrast that 20th century assumptions about suitable frame rates are no longer valid. We need to go for much higher frame rates than existing source material provides,” says Harm van der Heijden, TV Picture Quality Architect at NXP Semiconductors. “For static pictures you can simply repeat frames in order to increase the frame rate, but for moving pictures you have to create entirely new intermediate frames that contain the correct spatial information for the time slot into which they will be dropped.â€
Source: nxp.com
Topics: HDTV articles |