Patent ID: 8717385
Filing Date: 2014-05-06
Classification: G09G,H04N

Abstract:
1. An image display control apparatus comprising: a computation circuit; a storage medium; and a plane compositing device configured to combine a plurality of layers into composite image data on an as-needed basis, and configured to output the composite image data as display image data to a display device, wherein the plurality of layers is generated by the computation circuit, wherein: the storage medium includes a plurality of planes respectively configured to temporarily store therein the plurality of layers, the plurality of planes being a portion of a memory area of the storage medium; the plane compositing device includes a plurality of interface units and a compositing circuit; the plurality of interface units are respectively configured to output the plurality of layers stored in the plurality of planes, which respectively correspond to the plurality of interface units, to the compositing circuit; the compositing circuit is configured to (i) combine the plurality of layers outputted from the plurality of interface units, thereby generating the composite image data, and (ii) output the composite image data as the display image data to the display device; and in addition to the plurality of planes, the storage medium further includes an addition plane configured to store therein the composite image data outputted from the compositing circuit, the addition plane being another portion of the memory area of the storage medium, the image display control apparatus further comprising: a loop-back circuit configured to output the composite image data stored in the addition plane to the compositing circuit, wherein: the computation circuit is configured to control the storage medium, the plane compositing device and the loop-back circuit when display of the display device is switched, from the original image data to the replacement image data, in such manner that: