relative element address destinate (Code) (READ)
Relative Element Address Destinate (READ) is a two-dimensional encoding method used in Group 3 fax transmission.
With this run length coding, the difference between a reference line and the respective scanned line is transmitted. The reference line is stored and exchanged for a new reference line after a certain number of lines (K factor). The transmitted signal is therefore dependent on the content of the currently scanned line and the reference line.