Xref: utzoo gnu.misc.discuss:3090 comp.misc:12556 comp.dcom.modems:9730 Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!emory!gatech!udel!haven.umd.edu!socrates.umd.edu!socrates!rockwell From: rockwell@socrates.umd.edu (Raul Rockwell) Newsgroups: gnu.misc.discuss,comp.misc,comp.dcom.modems Subject: Re: hayes lawsuit Message-ID: Date: 15 May 91 03:01:52 GMT References: <1991May13.044909.3617@netdev.comsys.com> Sender: rockwell@socrates.umd.edu (Raul Rockwell) Organization: Traveller Lines: 31 In-Reply-To: rockwell@socrates.umd.edu's message of Tue, 14 May 1991 05: 27:27 GM Thomas M. Breuel: If you can think of uses prior to the mid-1980's of timeouts or timing to transmit out-of-band commands or data to a computer or communications device, please drop me a note, and I can put you in touch with the attorneys handling the case. In case anyone doesn't see clearly the resemblance between morse code and ascii, here's the phrase "a cat" in ascii, in terms of current pulse lengths: on 1, off 2, on 4, off (at least 2) on 2, off 1, on 5, off (at least 1) on 1, off 2, on 3, off (at least 3) on 1, off 2, on 4, off (at least 2) on 1, off 3, on 1, off (at least 3) Note that in morse code pauses of varying length are used to distinguish between (*) on pulses, (*) letters (*) sentences or phrases (*) transmissions. Ascii formalizes the first two cases, but does not address the other two as much. It happens that the timing for the hayes '+++' is convenient for a human striking the keys, but that is also the case for morse code. -------- Anyways, it is clear that the hayes patent doesn't hold water. After all, it doesn't use Modulo Arithmetic. (joke) Raul Rockwell