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AssigneeKoninklijke Philips Electronics N.V.
InventorsBart Andre Salters, Roy Van Dijk
Estimating the term…
A display device (406) is driven in a number of sub-fields. Each of the sub-fields is for outputting a respective illumination level by the display device. In each sub-field, a pixel of the displayed image may emit an amount of light corresponding to the particular sub-field, depending on whether it is switched on or not. A required intensity level of the pixel is realized by selecting an appropriate combination of sub-fields in which the pixel is switched on. The number and relative weights of the available sub-fields are such that an intensity level can be realized in more than one way. In the display unit (300) for driving the device, the sub-pixels of a pixel are separately controlled regarding the choice as how the required intensity level is to be realized. The combinations of sub-fields for the respective sub-pixels are selected such that the sub-pixels have their subjective peak in luminance at different instants in the field period, thus reducing the flicker of the display.
An image display unit for displaying an image on a display device in a plurality of sub-fields, wherein the display device is capable of generating in each of the sub-fields a respective illumination level, the image display unit comprising selection means for selecting a first combination of sub-fields for displaying a first color sub-pixel of a particular pixel with a first intensity level and for selecting a second combination of sub-fields for displaying a second color pixel of the particular pixel with a second intensity level, characterized in that the selection means is arranged to select that combination as second combination in which the subjective peak in luminance is at a different time position in the frame period compared with the subjective peak in luminance in the first combination.
A method of displaying an image on a display device in a plurality of sub-fields, whereby the display device is capable of generating in each of the sub-fields a respective illumination level, the method comprising a step of selecting a first combination of sub-fields for displaying a first color sub-pixel of a particular pixel with a first intensity level and of selecting a second combination of sub-fields for displaying a second color pixel of the particular pixel with a second intensity level, characterized in that from a plurality of combinations that are able to realize the second intensity level that combination is selected as second combination in which the subjective peak in luminance is at a different time position in the frame period compared with the subjective peak in luminance in the first combination.
Dependencies are inferred from the claim text.