Correction of Random and Outburst Error in Facsimile MMR Code

Extended 2 dimensional MMR Code is a kind of facsimile signal source code. Vertical relativity is utilized when MMR code is coded. In addition, there is no line synchronized code in MMR code. So when an error occurs, the bitstream cannot be decoded after the error point. To prevent error diffusion in MMR coding, this paper introduces a method: moving window error-correcting arithmetic which can partly correct some random and outburst errors