A reduction method of dynamic false contour utilizing the frame‐rate‐control method with suppression of the side effect on PDPs |
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Authors: | Takatoshi Ohara Yasuhiro Akiyama Koji Nagata Hiroyuki Nitta Yasuyuki Kudo |
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Affiliation: | Hitachi, Ltd., Central Research Laboratory, Higashi‐Koigakubo, 1‐280 Kokubunji‐shi, Tokyo, 1858601 Japan |
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Abstract: | Abstract— The plasma‐display panel (PDP) is a type of flat‐panel display that can display a high‐quality image. However, when moving images are displayed, annoying disturbances such as false contour noise occurs. This noise is called dynamic false contour (DFC). To achieve a higher‐quality image, DFC has to be reduced. Therefore, a new method to reduce DFC is proposed. To find a way to reduce DFC, a new evaluation value for it has been defined: the evaluation value of dynamic false contour (EVDFC). This value is defined on the basis of a person's subjective evaluation. By applying this value, the cause that generates DFC can be identified. On the basis of these studies, a new method for reducing DFC by applying frame‐rate control (FRC) with suppression of the side effect is proposed. This improved method can be used to provide high‐quality images. |
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Keywords: | PDP image quality dynamic false contour frame‐rate control evaluation value |
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