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Pat. 10784827 United States, Int. Cl.22 H03F 3/217, H02J 7/00, H02J 7/02, H02J 7/04, H02J 7/06, H02J 7/34, H03F 3/185, H04R 3/00, H02M 3/158. Power management system for battery-powered audio device : Appl. N 16/053729 : Filed 02.08.2018 : Pub. 22.09.2020 : / Andrew John Mason ; Assignee Thx Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10784827/en?oq=US10784827.html (дата обращения: ДД.ММ.ГГГГ).