초록 ▼

A system for coding video data comprised of one or more frames codes a portion of the video data using a frame-prediction coding technique, and generates residual images based on the video data and the coded video data. The system then codes the residual images using a fine-granular scalability codi

A system for coding video data comprised of one or more frames codes a portion of the video data using a frame-prediction coding technique, and generates residual images based on the video data and the coded video data. The system then codes the residual images using a fine-granular scalability coding technique, and outputs the coded video data and at least one of the coded residual images to a receiver.

대표청구항 ▼

[ What is claimed is:] [1.]1. A method of coding video data comprised of one or more frames, the method comprising:a first coding step for producing coded video data by coding a portion of the video data using a frame-prediction coding technique;a generating step for generating residual images based

[ What is claimed is:] [1.]1. A method of coding video data comprised of one or more frames, the method comprising:a first coding step for producing coded video data by coding a portion of the video data using a frame-prediction coding technique;a generating step for generating residual images based on the video data and the coded video data;a second coding step for producing coded residual images by coding the residual images using a fine-granular scalability coding technique; andan outputting step for outputting the coded video data and one or more of the coded residual images to a receiver;wherein the first coding step comprises coding the portion of the video data at a plurality of different bit rates so as to produce multiple versions of the coded video data;wherein the generating step comprises generating a plurality of residual images for each version of the coded video data;wherein the second coding step comprises coding the plurality of residual images for each version of the coded video data using a fine-granular scalability coding technique; andwherein the outputting step comprises outputting one version of the coded video data together with at least one corresponding coded residual image therefor;wherein the outputting step comprises the steps of:determining variations in a bandwidth of the receiver over time; andselecting which one of the multiple-versions of the coded video data and which of the coded residual images to output over time based on the variations in the bandwidth of the receiver;wherein, for a receiver bandwidth increasing from B.sub.1 to B.sub.2, where B.sub.1