| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve efficiency of error concealment in a video decoder. <P>SOLUTION: The error concealment technique disclosed herein relates to the use of existing information by the decoder to conceal bitstream errors regardless of operation of the encoder. Examples of existing information include, for example, the previous reference frame, macroblock information for the previous reference frames, etc. Another aspect of the system described herein relates to the measures that the encoder can take to enhance the decoder's capability to recover smoothly from a transmission error. An example for measures that can be taken by the encoder include intra walk around and GOB headers transmission. Although these encoder techniques can provide greatly enhanced results, they are not strictly necessary to the system described herein. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
