Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!wuarchive!udel!haven!ni.umd.edu!uc780.umd.edu!cs450a03 From: cs450a03@uc780.umd.edu Newsgroups: comp.theory Subject: RE: Hamming codes 101 Message-ID: <26MAR91.06565026@uc780.umd.edu> Date: 26 Mar 91 06:56:50 GMT References: <25MAR91.01330289@uc780.umd.edu> <1991Mar25.123457.24645@mailer.cc.fsu.edu> <26MAR91.00093317@uc780.umd.edu> Sender: usenet@ni.umd.edu (USENET News System) Organization: The University of Maryland University College Lines: 12 Nntp-Posting-Host: uc780.umd.edu Please note, in my gauche analogy of Grey code to Hamming, that parity has a bit distance of 2, Hamming has a bit distance of 3 (and is not distributed linearly), and "2 bit error correcting" ought to have a bit distance of at least 5 (4 ought to function, but leave no error detection ability). *sigh* Also note that coming up with a distribution is not sufficient. There must also exist a method to correct the errors that can occur. Raul Rockwell