Hardware overlay assignment
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United States of America Patent
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Jan 30, 2018
Grant Date -
Apr 9, 2015
app pub date -
Oct 8, 2013
filing date -
Oct 8, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
An aspect of the present invention proposes a novel approach that can reduce the total number of the overlays to be composited during the display of graphical output in a mobile computing device. As a result, the total number of memory bandwidth and the usage of a graphics processing unit by a pre-compositor can be decreased significantly. According to one embodiment, this new approach is implemented with a display panel with embedded memory which supports a partial update, or refresh feature. Which such a feature, the layer compositor (typically either the display controller or GPU) is able to keep track of actively updating regions of a display panel by checking if each layer has new content to be displayed.
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