Patent ID: 6040879
Filing Date: 2000-03-21
Classification: H04M,H04N

Abstract:
A method for decoding video data which is arranged in a first unit, the first unit including a plurality of data units, and each of the data units including information on a status of the respective data unit, said method comprising the steps of:(a) determining whether the status information in a current data unit is invalid or not;(b) changing the status information into another one among a set of possible status information to decode the video data from the current data unit to a last data unit in a current first unit on the basis of the changed status information if it is determined that the status information in the data unit is invalid in said step (a);(c) changing a flag representing an encoding scheme of the video data such that the flag indicates that the data unit is encoded in an inter-frame mode if the decoding of video data from the current data unit to the last data unit in the current first unit was successful for none of the possible status information;(d) decoding the video data from the current data unit to the last data unit in the current first unit according to the changed flag; and(e) replacing the video data from the current data unit to the last data unit in the current first unit with corresponding data units in a previous frame if the decoding of the video data in said step (d) is unsuccessful.