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From: | Krzysztof Kamieniecki |
Subject: | [Discuss-gnuradio] GNURadio and GPL licensing issues |
Date: | Thu, 18 Nov 2004 22:12:29 -0500 |
User-agent: | Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.3) Gecko/20040910 |
I think this is something that may have to be clarified for researchers at universities, at least those with "intellectual property" offices. This may also be of interest to companies that need a relatively disconnected front end for signal processing, and may want to invest their signal processing developer resources in an open source project.
Example:Lets say you write a ATSC receiver, using the GNURadio signal processing blocks. This server program transmits an MPEG2 transport stream through a TCP/IP socket and accepts commands through another TCP/IP socket. Then you write a proprietary client program that connects to this ATSC receiver server through the TCP/IP ports. The ATSC receiver would definitely have to licensed under GPL. What about the client program? Would this depend on what type of API the ATSC server has?
There are some answers on the GNU website, but using GNURadio in this way seems to be in a gray zone. http://www.gnu.org/licenses/gpl-faq.html#MereAggregation http://www.gnu.org/licenses/gpl-faq.html#GPLInProprietarySystem -- Krzysztof Kamieniecki callsign:KB1KLB mailto:address@hidden
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