Kenyon & Kenyon LLP
Error resilient transmission of random access frames and global coding parameters
Error mitigation techniques are provided for video coding system in which input frames are selected for coding either as a Random Access Pictures (“RAP frames”) or as a non-RAP frame. Coded RAP frames may include RAP identifiers that set an ID context for subsequent frames. Coded non-RAP frames may include RAP identifiers that match the RAP identifiers that were included in the coded RAP frames. Thus, in the absence of transmission errors, a coded non-RAP frame should include a RAP identifier that matches the identifier of the preceding RAP frame. If the identifier of a non-RAP frame does not match the identifier of the RAP frame that immediately preceded it, then it indicates that a RAP frame was lost during transmission. In this case, the decoder may engage error recovery processes.
Apple Inc.
H H H H
H04N H04N H04N H04N
inventional inventional inventional inventional
Hsi-Jung Xiaosong
Wu Zhou