http://fileformats.archiveteam.org/index.php?action=history&feed=atom&title=LZ77_with_Huffman_coding 2026-04-19T04:02:46Z Revision history for this page on the wiki MediaWiki 1.19.2 http://fileformats.archiveteam.org/index.php?title=LZ77_with_Huffman_coding&diff=37946&oldid=prev 2020-09-12T11:35:08Z

<p>Created page with &quot;{{FormatInfo |formattype=electronic |subcat=Compression }} A popular data compression technique is to use <a href="/wiki/LZ77" title="LZ77">LZ77</a> combined with some type of <a href="/wiki/Huffman_coding" title="Huffman coding">Huffman coding</a>. Popular thou...&quot;</p> <p><b>New page</b></p><div>{{FormatInfo<br /> |formattype=electronic<br /> |subcat=Compression<br /> }}<br /> A popular data compression technique is to use [[LZ77]] combined with some type of [[Huffman coding]].<br /> <br /> Popular though it is, it's not clear that it has a well-established name. '''LZH''' is sometimes used, but LZH more commonly refers to a particular implementation of it (see also the [[LZH|LZH disambiguation page]]), or to the [[LHA]] file format. In this article, though, we'll use LZH.<br /> <br /> == Discussion ==<br /> The compressor uses LZ77 compression to produce a stream of coded instructions, and uses one or more Huffman codebooks to compress those instructions. The exact strategy for doing this could be complicated. <br /> <br /> LZH can be subclassified into schemes that use [[Adaptive Huffman coding]] (the term '''LZAH''' might be used), and those that use non-adaptive (&quot;static&quot;) Huffman coding. But it's not always that simple, because some LZH schemes use multiple kinds of Huffman coding.<br /> <br /> == Examples ==<br /> Examples of formats that use, or may use, LZH:<br /> * [[DEFLATE]]<br /> * [[LHA]] - Most &quot;lh&quot; compression methods<br /> * [[ARJ]] - Most compression methods<br /> * [[Zoo]] - Compression method #2<br /> * [[CrLZH]]<br /> * [[SCO compress LZH]]</div>

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