From d454a8efeff39243df6852058a44b54ed9b3c4ee Mon Sep 17 00:00:00 2001 From: giraffedata Date: Tue, 18 Jun 2013 15:49:45 +0000 Subject: Add information about MPEG patents git-svn-id: http://svn.code.sf.net/p/netpbm/code/trunk@1933 9d0c8265-081b-0410-96cb-a4ca84ce46f8 --- doc/patent_summary | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'doc/patent_summary') diff --git a/doc/patent_summary b/doc/patent_summary index 271f227c..324fec0d 100644 --- a/doc/patent_summary +++ b/doc/patent_summary @@ -48,12 +48,27 @@ do their JPEG work via a JPEG library not distributed with Netpbm. Your JPEG-related liability for using Netpbm is limited to your liability for using your JPEG library. +Note that it is possible to use Ppmtompeg without involving JPEG and to +build it without the ability to involve JPEG. + The next best alternative to JPEG is probably PNG and maybe JBIG for bilevel (black and white) images. http://burnalljpegs.org contains information on this issue. +MPEG patents +------------ + +The original University of California distributeion of the Ppmtompeg code +conatins this statement in a README file: + + ... patents are held by several companies on various aspects of the MPEG + video standard. Companies or individuals who want to develop commercial + products that include this code must acquire licenses from these companies. + For information on licensing, see Appendix F in the standard. + + Expired LZW patents ------------------- -- cgit 1.4.1