Patent ID: 11968385
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A video decoder comprising a processor configured to:
store in a decoded picture buffer (DPB) a reference picture set (RPS) from a video encoder, the RPS including reference picture information, the reference picture information including a picture order count (POC) value;
when the POC value corresponds to a long-term reference picture and there is a long-term reference picture having the POC value in the DPB, then keep the long-term reference picture having the POC in the DPB;
when the POC value corresponds to a long-term reference picture and there is a short-term reference picture having the POC value in the DPB, then mark the short-term reference picture having the POC value in the DPB as a long-term reference picture;
when the POC value corresponds to a short-term reference picture and there is a short-term reference picture having the POC value in the DPB, then keep the short-term reference picture having the POC value in the DPB; and
encode short-term pictures with variable length codes and encode long-term pictures with fixed-length codes.