Newsgroups: comp.protocols.tcp-ip
Path: utzoo!henry
From: henry@zoo.toronto.edu (Henry Spencer)
Subject: Re: Message compression
Message-ID: <1991Apr4.180239.12442@zoo.toronto.edu>
Date: Thu, 4 Apr 1991 18:02:39 GMT
References: <9104031437.AA14650@saturn.acc.com> <SOLENSKY.91Apr4114120@animal.clearpoint.com>
Organization: U of Toronto Zoology

In article <SOLENSKY.91Apr4114120@animal.clearpoint.com> solensky@animal.clearpoint.com (Frank T. Solensky) writes:
>One of the problems with a number of data compression algorithms
>(eg: Lempel-Ziv encoding, the one used by the Unix 'compress' command)
>is that they need to be able to look at the entire data stream before
>being able to compress any part of it...

Telebit would be very surprised to hear this; all their modems do
Lempel-Ziv compression on the fly.  No, LZ does *not* need to look at
the entire data stream before being able to compress any part of it.
-- 
"The stories one hears about putting up | Henry Spencer @ U of Toronto Zoology
SunOS 4.1.1 are all true."  -D. Harrison|  henry@zoo.toronto.edu  utzoo!henry
