Patent ID: 6438318
Filing Date: 2002-08-20
Classification: G11B,H04N

Abstract:
Method for regenerating original data of a digitally coded video film, wherein a specific picture type of a number of picture types, namely I, B and P picture types, has been allocated to each of the individual pictures during coding and the coding order not corresponding, at least in part, to a display order, wherein the digitally coded video film comprises a group of pictures in the form IPBBPBBPBB . . . comprising the steps of:incrementing a GOP counter upon detection of a group of Pictures Header in the bitstream; decoding a video frame of the video film; writing of the decoded video frame in a respective one of three available frame memories, incrementing a B counter after decodation of a B frame; incrementing a P counter after decodation of a I or P frame; updating the corresponding entry for the decoded video frame in a table with the following information items: a reference to the frame memory in which the decoded video frame is stored, follow up information regarding the displaying status of the video frames in the frame memories, evaluating the entries in said table and said GOP-, IP- and B-counters for error detection and error concealment.