SIGNAL ELEMENT CODING FORMAT COMPATABILITY WITHIN A HIERARCHICAL CODING SCHEME USING MULTIPLE RESOLUTIONS

摘要

There is provided a method for encoding and decoding a signal. The method comprises receiving a first signal (900) and a second signal (960), the first and second signals comprising different versions of a common content, the first signal (900) using a first signal element coding format and the second signal (960) using a second signal element coding format. The first signal (900) is encoded by a lower encoding module (1103) to generate a lower encoded signal (910). The lower encoded signal (910) is decoded to generate a lower decoded signal. The lower decoded signal is processed by at least converting from the first signal element coding format to the second signal element coding format and up-sampling, to produce a processed signal. The processed signal and the second signal (960) are processed by an upper encoding module (1107) to generate an upper encoded signal (920).