Article View: comp.lang.postscript
Article #9315Re: postscript copyrights
From: Ian Kemmish
Date: Tue, 02 Mar 1999 00:00
Date: Tue, 02 Mar 1999 00:00
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In article <none-ya02408000R0203990909430001@nntp.news.netcom.net>, none@nospam.spam says... > >In article <36DBEA81.DC99B8FB@visual-design.com>, root ><caroli@visual-design.com> wrote: > >> I plan to write a postscript-interpreter (like ghostview) for a >> commercial product. Does anybody know, if I have to expect any legal >> problems (eg. paying rents, copyright limitations)? > >At the very least, you will be required to license the right to >encode/decode LZW compressed data from Unisys. Because you are working with >PostScript, it will cost you significantly more than it would otherwise. >That has been our experience, in any event. We give our OEMs the option of generating an `invalidaccess' error if a page description attempts to open an LZW filter. I've never seen a real-world page description that uses LZW -- it may be possible to coax photoshop into producing such a file, but I've never tried.... More interesting these days is finding a patent-free way of doing colour managment or halftoning:-) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Ian Kemmish 18 Durham Close, Biggleswade, Beds SG18 8HZ, UK ian@five-d.com Tel: +44 1767 601 361 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Behind every successful organisation stands one person who knows the secret of how to keep the managers away from anything truly important.
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f62f2,19eade0658bf3578 X-Google-Attributes: gidf62f2,public X-Google-Thread: 104d8a,19eade0658bf3578 X-Google-Attributes: gid104d8a,public X-Google-Thread: f5fd2,19eade0658bf3578 X-Google-Attributes: gidf5fd2,public X-Google-Thread: f5708,19eade0658bf3578 X-Google-Attributes: gidf5708,public From: ian@five-d.com (Ian Kemmish) Subject: Re: postscript copyrights Date: 1999/03/02 Message-ID: <36dc28c1.0@newsread3.dircon.co.uk> X-Deja-AN: 450438224 Distribution: inet X-NNTP-Posting-Host: 194.112.32.19 References: <36DBEA81.DC99B8FB@visual-design.com> <none-ya02408000R0203990909430001@nntp.news.netcom.net> Content-Type: Text/Plain; charset=ISO-8859-1 X-Trace: 2 Mar 1999 18:06:57 GMT, 194.112.47.5 Organization: At home with Ian MIME-Version: 1.0 Newsgroups: comp.lang.postscript,comp.periphs.printers,misc.legal.computing,eunet.cyberrights