Easily decodable runlength code (e.d.r.c.) for source encoding of black-and-white facsimile pictures

A coding system is represented, showing some advantages with respect to reduction of redundancy of black-and-white facsimile pictures compared with well known codes, and also with respect to regularity and simple implementation. The codewords of this system can be decoded by elementary concatenation of the decoded prefix and the original suffix.