Patent US 4,743,973

An encoding method for facsimile signal which is characterized by encoding data of a line selected out of the all lines of input facsimile signals in a manner of skipping over a predetermined number of lines according to a predetermined encoding method and by encoding the data of one of the thus skipped-over lines from a basic element of higher picture quality contribution judged with reference made to the data of the lines preceding of and/or subsequent to the encoding line which have already been encoded.