US 11,749,954 B2
Semiconductor USB device for detecting foreign substances and method of operating the same
Je Kook Kim, Yongin-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Nov. 4, 2021, as Appl. No. 17/518,752.
Application 17/518,752 is a continuation of application No. 16/901,378, filed on Jun. 15, 2020, granted, now 11,196,221.
Application 16/901,378 is a continuation of application No. 15/450,671, filed on Mar. 6, 2017, granted, now 10,686,283, issued on Jun. 16, 2020.
Claims priority of application No. 10-2016-0111658 (KR), filed on Aug. 31, 2016.
Prior Publication US 2022/0059978 A1, Feb. 24, 2022
Int. Cl. H01R 13/66 (2006.01); G06F 13/42 (2006.01); G06F 13/40 (2006.01); H01R 13/703 (2006.01); H01R 29/00 (2006.01); H01R 24/60 (2011.01); H01R 107/00 (2006.01)
CPC H01R 13/6683 (2013.01) [G06F 13/4072 (2013.01); G06F 13/4282 (2013.01); H01R 13/6675 (2013.01); H01R 13/703 (2013.01); H01R 29/00 (2013.01); G06F 2213/0042 (2013.01); H01R 24/60 (2013.01); H01R 2107/00 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A USB (Universal Serial Bus) host comprising:
a plurality of signal pins comprising a CC1 signal pin, a CC2 signal pin, and other pins,
wherein the USB host is configured to,
operate in a protection mode,
detect voltage levels of the plurality of signal pins,
detect a foreign substance when the voltage levels of at least two pins of the other pins are transitioned, and
operate in a normal mode when the foreign substance is not detected and the voltage level of the CC1 signal pin or the CC2 signal pin is transitioned.