Difference between revisions of "Mp3"
m (Reverted edits by 49.212.8.227 (talk) to last revision by Ciaran) |
(Added more info) |
||
(13 intermediate revisions by 5 users not shown) | |||
Line 1: | Line 1: | ||
{{navbox}} | {{navbox}} | ||
− | ''' | + | '''MP3''' is a highly compressed audio format. It is the de facto standard for audio distribution online, as well as the most-supported format for digital audio players. The [[MPEG-LA]] group and Sisvel ([[Philips]]) prevent developers from adding MP3 support to their software packages without paying royalties. |
==Software harmed== | ==Software harmed== | ||
− | The Fedora GNU/Linux operating system excludes | + | The Fedora GNU/Linux operating system excludes MP3 codecs due to patents, saying: |
<blockquote> | <blockquote> | ||
− | + | Fedora is unable to include encoding and decoding support for the MP3 format because it requires patented technologies and the patent holder has not provided licenses that are compatible with Fedora's requirements.<ref>http://fedoraproject.org/w/index.php?title=Multimedia/MP3&oldid=180065</ref> | |
</blockquote> | </blockquote> | ||
[http://www.sipfoundry.org sipXecs Open Source IP PBX] does not include support for MP3 voicemail files due to patents on MP3 encoding and decoding.<ref>http://www.mail-archive.com/sipx-dev@list.sipfoundry.org/msg07791.html</ref> | [http://www.sipfoundry.org sipXecs Open Source IP PBX] does not include support for MP3 voicemail files due to patents on MP3 encoding and decoding.<ref>http://www.mail-archive.com/sipx-dev@list.sipfoundry.org/msg07791.html</ref> | ||
+ | |||
+ | ==Final expiration: 2015 or 2017== | ||
+ | |||
+ | From Wikipedia's article<ref>https://en.wikipedia.org/wiki/MP3#Licensing_and_patent_issues</ref> (including the references): | ||
+ | |||
+ | <blockquote> | ||
+ | An exception is the United States, where patents filed prior to 8 June 1995 expire 17 years after the publication date of the patent, and a loophole known as [[submarine patent]]s that makes it possible to extend the effective lifetime of a patent through application extensions. The various MP3-related patents expire on dates ranging from 2007 to 2017 in the U.S.<ref name=big-list>{{cite web |title=A Big List of MP3 Patents (and supposed expiration dates) |url=http://www.tunequest.org/a-big-list-of-mp3-patents/20070226/ |work=tunequest |date=26 February 2007}}</ref> Patents filed for anything disclosed in ISO CD 11172 a year or more after its publication are questionable; if only the known MP3 patents filed by December 1992 are considered, then MP3 decoding may be patent-free in the US by September 2015 when US patent 5812672 expires which had a PCT filing in Oct 1992.<ref>{{cite web | url = http://www.kuro5hin.org/story/2008/7/18/232618/312 | title = Patent Status of MPEG-1, H.261 and MPEG-2 | work = [[Kuro5hin]] | first = Josh | last = Cogliati | date = 20 July 2008}} This work failed to consider patent divisions and continuations.</ref><ref>[http://patft1.uspto.gov/netacgi/nph-Parser?patentnumber=5812672 US5812672]</ref><ref>http://www.osnews.com/story/24954/US_Patent_Expiration_for_MP3_MPEG-2_H_264</ref> | ||
+ | </blockquote> | ||
==Related pages on {{SITENAME}}== | ==Related pages on {{SITENAME}}== | ||
Line 27: | Line 35: | ||
* [http://fedoraproject.org/wiki/Multimedia/MP3 Fedora GNU/Linux wiki page on mp3] | * [http://fedoraproject.org/wiki/Multimedia/MP3 Fedora GNU/Linux wiki page on mp3] | ||
* Wikipedia: [http://en.wikipedia.org/wiki/MP3#Licensing_and_patent_issues MP3#Licensing_and_patent_issues] | * Wikipedia: [http://en.wikipedia.org/wiki/MP3#Licensing_and_patent_issues MP3#Licensing_and_patent_issues] | ||
+ | * [http://www.tunequest.org/a-big-list-of-mp3-patents/20070226/ A Big List of MP3 Patents (and supposed expiration dates)], 26 Feb 2007, '''Tunequest''' | ||
==References== | ==References== |
Latest revision as of 21:09, 17 January 2015
MP3 is a highly compressed audio format. It is the de facto standard for audio distribution online, as well as the most-supported format for digital audio players. The MPEG-LA group and Sisvel (Philips) prevent developers from adding MP3 support to their software packages without paying royalties.
Contents
Software harmed
The Fedora GNU/Linux operating system excludes MP3 codecs due to patents, saying:
Fedora is unable to include encoding and decoding support for the MP3 format because it requires patented technologies and the patent holder has not provided licenses that are compatible with Fedora's requirements.[1]
sipXecs Open Source IP PBX does not include support for MP3 voicemail files due to patents on MP3 encoding and decoding.[2]
Final expiration: 2015 or 2017
From Wikipedia's article[3] (including the references):
An exception is the United States, where patents filed prior to 8 June 1995 expire 17 years after the publication date of the patent, and a loophole known as submarine patents that makes it possible to extend the effective lifetime of a patent through application extensions. The various MP3-related patents expire on dates ranging from 2007 to 2017 in the U.S.[4] Patents filed for anything disclosed in ISO CD 11172 a year or more after its publication are questionable; if only the known MP3 patents filed by December 1992 are considered, then MP3 decoding may be patent-free in the US by September 2015 when US patent 5812672 expires which had a PCT filing in Oct 1992.[5][6][7]
Related pages on ESP Wiki
External links
- FFII page on mpeg licences: MPEG-related patents on compression of acoustic data
- mpeg-patents-faq ("especially for audio compression")
- Lucent loses $1.5b award in Lucent v. Gateway, Dell, & Microsoft
- You thought paying Sisvel ended your license concerns?
- Alcatel won a US Federal Court Jury verdict for US$ 1.52 billion damage award for patent infringement by Microsoft
- Fedora GNU/Linux wiki page on mp3
- Wikipedia: MP3#Licensing_and_patent_issues
- A Big List of MP3 Patents (and supposed expiration dates), 26 Feb 2007, Tunequest
References
- ↑ http://fedoraproject.org/w/index.php?title=Multimedia/MP3&oldid=180065
- ↑ http://www.mail-archive.com/sipx-dev@list.sipfoundry.org/msg07791.html
- ↑ https://en.wikipedia.org/wiki/MP3#Licensing_and_patent_issues
- ↑ "A Big List of MP3 Patents (and supposed expiration dates)". tunequest. 26 February 2007. http://www.tunequest.org/a-big-list-of-mp3-patents/20070226/.
- ↑ Cogliati, Josh (20 July 2008). "Patent Status of MPEG-1, H.261 and MPEG-2". Kuro5hin. http://www.kuro5hin.org/story/2008/7/18/232618/312. This work failed to consider patent divisions and continuations.
- ↑ US5812672
- ↑ http://www.osnews.com/story/24954/US_Patent_Expiration_for_MP3_MPEG-2_H_264