Patent ID: 6907070
Filing Date: 2005-06-14
Classification: H04N

Abstract:
1. A method for coding video data according to layered coding techniques in which the video data is represented as multi-layered frames, each frame having a plurality of references in multiple layers ranging from a base layer of low quality to enhancement layers of increasingly higher quality, the method comprising: encoding macroblocks of the video data to produce a first bitstream representing a base layer; selecting a coding mode for each macroblock, the coding mode being selected from a group comprising at least three coding modes where each coding mode specifies a prediction reference and a reconstruction reference, the prediction reference determining a predicted macroblock for a current frame and the reconstruction reference determining a reference for a next frame; encoding each macroblock of the video data using the coding mode selected for the macroblock, the encoding of the macroblocks producing a second bitstream representing one or more enhancement layers the group of at least three coding modes comprising: wherein at least two of the coding modes are utilized to produce the second bitstream.