Patent ID: 8385726
Filing Date: 2013-02-26
Classification: G06F,G09G

Abstract:
1. A playback apparatus comprising: an output unit configured to output first video data, second video data, and picture data, the second video data and the picture data comprising first alpha data which includes a coefficient indicating the transparency or opacity of each pixel; a first blend processing unit configured to superimpose the second video data and the picture data, and to calculate second alpha data corresponding to each pixel in a region where the second video data and the picture data are superimposed by using the first alpha data corresponding to each pixel in the region included in the second video data and the first alpha data corresponding to each pixel in the region included in the picture data; and a second blend processing unit configured to superimpose the superimposed data obtained by the first blend processing unit and the first video data, the superimposed data comprising the second alpha data, wherein the first blend processing unit is configured to output, to a dedicated bus, the second alpha data and the superimposed data in synchronization with each other pixel by pixel, the dedicated bus connecting the first blend processing unit and the second blend processing unit.