Source : Free On-Line Dictionary of Computing

Digital Lempel Ziv 1
     
         (DLZ1) A {Lempel-Ziv compression} {algorithm}
        which maps variable length input strings to variable length
        output symbols.  During compression, the algorithm builds a
        dictionary of strings which is accessed by means of a {hash
        table}.  Compression occurs when input data matches a string
        in the table and is replaced with the output symbol.
     
        DLZ1 is used on {Digital Linear Tape}.
     
        (1997-04-05)