US 12,218,536 B2
Mobile device and operating method thereof
Sangun Bang, Seongnam-si (KR); Duseung Oh, Hwaseong-si (KR); Youngsoo Lee, Anyang-si (KR); Dongjo Kim, Suwon-si (KR); Dongjoon Kim, Seoul (KR); Sungeun Lee, Hwaseong-si (KR); Jinsoo Lee, Hwaseong-si (KR); and Woonhyung Heo, Seoul (KR)
Assigned to Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on May 10, 2021, as Appl. No. 17/315,807.
Claims priority of application No. 10-2020-0105534 (KR), filed on Aug. 21, 2020.
Prior Publication US 2022/0060033 A1, Feb. 24, 2022
Int. Cl. H02J 7/00 (2006.01); H02J 50/10 (2016.01); H04R 1/10 (2006.01)
CPC H02J 7/0031 (2013.01) [H02J 7/0048 (2020.01); H02J 50/10 (2016.02); H04R 1/1025 (2013.01); H04R 1/1041 (2013.01); H04R 2420/07 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A mobile system comprising:
a first mobile device configured to output a signal having a level less than or equal to a reference level on the basis of a charged state of a battery in the first mobile device; and
a second mobile device configured to receive the signal and to selectively provide power to the first mobile device on the basis of a duration time for which reception of the signal having the level less than or equal to the reference level is maintained and a toggle time for which the signal is toggled.