Package org.loboevolution.pdfview.decode

Class LZWDecode

java.lang.Object
org.loboevolution.pdfview.decode.LZWDecode
public class LZWDecode extends Object
decode an LZW-encoded array of bytes. LZW is a patented algorithm.

Feb 21, 2009 Legal statement on Intellectual Property from Unisys

   LZW Patent Information (...)
   License Information on GIF and Other LZW-based Technologies
   
   Unisys U.S. LZW Patent No. 4,558,302 expired on June 20, 2003,
   the counterpart patents in the United Kingdom, France, Germany and
   Italy expired on June 18, 2004, the Japanese counterpart patents
   expired on June 20, 2004 and the counterpart Canadian patent
   expired on July 7, 2004.
   
   Unisys Corporation holds and has patents pending on a number of
   improvements on the inventions claimed in the above-expired patents.
   Information on these improvement patents and terms under which they
   may be licensed can be obtained by contacting the following:

   Unisys Corporation
   Welch Patent Licensing Department
   Mail Stop E8-114
   Unisys Way
   Blue Bell, PA  19424

   Via the Internet, send email to Robert.Marley@unisys.com.

   Via facsimile, send inquiries to Welch Patent Licensing Department at
   215-986-3090.

   The above is presented for information purposes only, and is subject
   to change by Unisys.  Additionally, this information should not be
   considered as legally obligating Unisys in any way with regard to license
   availability, or as to the terms and conditions offered for a license,
   or with regard to the interpretation of any license agreements.
   You should consult with your own legal counsel regarding your
   particular situation.

Mike Wessler

  • Method Details

    • decode

      public static ByteBuffer decode(ByteBuffer buf, PDFObject params) throws IOException
      decode an array of LZW-encoded bytes to a byte array.
      Parameters:
      buf - the buffer of encoded bytes
      params - parameters for the decoder (unused)
      Returns:
      the decoded uncompressed bytes
      Throws:
      IOException - if any.