ROBUST MODE STAGGERCASTING USER CONTROLLED SWITCHING MODES

摘要

A method and apparatus for staggercasting includes encoding a set of signals representing content. The set of encoded signals (115) is capable of being decoded to produce a corresponding set of decoded signals (output of 210), each having a quality which is different from the qualities of the decoded signals corresponding to the other encoded signals. A composite signal (115 or 205) is generated which includes the set of encoded signals, staggered in time. The set of encoded signals extracting from the composite signal. Errors in the set of extracted encoded signals are detected (E) to produce a subset of available extracted encoded signals which are not erroneous. A content representative signal (215) at a selectable desired quality is then decoded.