When errors occur in a received code sequence, an error concealment routine part 130 is actuated and a correct code sequence is generated based on a code sequence received before the errors are detected. A decoding routine part 21' executes a decoding process based on this code sequence and updates the...http://www.google.com.tw/patents/US6085158?utm_source=gb-gplus-share專利 US6085158 - Updating internal states of a speech decoder after errors have occurred
