Patent ID: 8548062
Filing Date: 2013-10-01
Classification: H04N

Abstract:
1. A video decoder that decodes video from a bit-stream, said decoder comprising: (a) an entropy decoder that provides a decoded bitstream of said video; (b) an inverse transformation that transforms said decoded bitstream; (c) a predictor that selectively performs an intra-prediction and a motion compensated prediction based on said decoded bitstream; (d) a buffer that stores compressed image data from said decoded bitstream retrievable from said buffer by said predictor when performing said motion compensated prediction, said compressed image data having a low resolution data set and a high resolution data set comprising selectively-encoded residual data calculated using linear spatial predictions from said low resolution data set; (e) wherein said decoder receives a flag in said bit-stream indicating an option to provide decoded video from said bitstream at a low spatial resolution mode or a high spatial resolution mode; (f) wherein said decoder selects said high spatial resolution mode when said decoder does not receive said flag, and selects said low spatial resolution mode when said decoder does receive said flag, and wherein said decoder is capable of linearly predicting spatially high-resolution data from said low resolution data set, in said low spatial resolution mode, without said residual data.