https://bugzilla.redhat.com/show_bug.cgi?id=1908922 Linus Lewandowski <linus@xxxxxxxxx> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |linus@xxxxxxxxx --- Comment #17 from Linus Lewandowski <linus@xxxxxxxxx> --- aptX was created by Audio Processing Technology Ltd (a subsidiary of Solid State Logic Ltd) in 1990s - see https://www.aptx.com/history and https://patents.google.com/patent/EP0398973B1/en (the expired patent mentioned earlier) APT Ltd was sold - (one can safely assume: together with all the patents required for aptX) - in 2005: https://www.mixonline.com/technology/solid-state-logic-sells-apt-381257 There is only one patent assigned to APT Ltd: https://patents.google.com/?assignee=Audio+Processing+Technology+Limited - it's the expired one (EP0398973B1). The original owner - Solid State Logic Ltd - had some more patents: https://patents.google.com/?assignee=Solid+State+Logic - but they're all expired, except for one from 2020. So... I'm pretty sure that there is no other patent that affects aptX itself. There might still be something affecting aptX LL (launched in 2012) and aptX HD (launched in 2016) - but they aren't really innovative. aptX LL is the trivial merge of the idea behind CSR FastStream (launched in 2008, https://web.archive.org/web/20080509054609/www.csr.com/pr/pr328.htm) and the aptX codec. FastStream looks like patent-free, because it's referred to in https://patents.google.com/patent/US9398620B1/en (expired), and this patent does not depend on any other related patent - while it describes how to use FastStream in a selected use case. aptX HD seems to just be a different set of settings for the aptX algorithm, but I'm not really sure here, I haven't looked at the code. On the other hand, aptX Adaptive (launched in 2018) might be innovative - it introduces variable bit rate - so I wouldn't recommend adding it at this point. -- You are receiving this mail because: You are on the CC list for the bug. You are always notified about changes to this product and component _______________________________________________ package-review mailing list -- package-review@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to package-review-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/package-review@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
