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handling. He calls it LZW, after the names of the inventors, Lempel-Ziv-Welch. The article includes a justification for data compression, an overview of common methods, and a detailed explanation and runthrough of the LZW algorithm. is released by Spencer Thomas, after the LZW article was published but before LZW was patented. readers, Spencer decided to implement the LZW algorithm he read in the magazine, completely unaware that there was a patent pending on the technique. 10th December 1985>: LZW patent is granted. September 1986>: The Sperry Corporation (owners of the Sperry Research
and method", it is more commonly known as the LZW patent or Unisys's GIF tax. Don't buy ram at Apple. You can save big money when you buy your memory at MacMemoryStore. Most popular compression techniques build on this technique and most archivers (e. ZIP, ZOO, ARC, gzip, LhA, CAB, Arj, RAR, StuffIt) include it in their compression methods. I only mention this to tell you it's unrelated to LZ78 or LZW. [US4,464,650]>), but the LZW derivative is widely used. Terry Welch has been working for the Sperry Research Center and invents a derivative of LZ78 with much simplified, faster dictionary
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06/19/2003 10:23:58 AM EST (>3. 06/19/2003 07:09:10 PM EST (>4. 06/19/2003 07:31:22 PM EST (>5. 06/19/2003 10:34:27 AM EST (>4. 06/19/2003 12:56:21 PM EST (>4. 06/19/2003 11:19:11 PM EST (>2. 06/19/2003 04:15:20 PM EST (>3. 06/19/2003 07:53:25 PM EST (>4. 06/19/2003 08:12:16 PM EST (>2. 06/19/2003 11:20:04 PM EST (>4. 06/19/2003 11:40:23 PM EST (>3. 06/19/2003 06:23:28 PM EST (>4. 06/20/2003 02:03:19 AM EST (>5. Call me paranoid, but I'm not rushing to use GIFs again. One of the products I work with could definitely benefit from this being public domain now, but I'm just waiting
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