The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 16, 2024
Filed:
Jan. 13, 2020
Applicant:
Beijing Xiaomi Mobile Software Co., Ltd., Beijing, CN;
Inventors:
Assignee:
Beijing Xiaomi Mobile Software Co., Ltd., Beijing, CN;
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/327 (2006.01); G01R 15/20 (2006.01); H02M 1/42 (2007.01); H02M 3/156 (2006.01); H02M 7/06 (2006.01);
U.S. Cl.
CPC ...
G01R 31/327 (2013.01); G01R 15/202 (2013.01); H02M 1/4233 (2013.01); H02M 3/156 (2013.01); H02M 7/068 (2013.01);
Abstract
An on-off detection circuit for a flash switch includes an on-off detection module and a control module. An input end of the on-off detection module is connected with a power supply through the flash switch, the on-off detection module is configured to acquire a digital signal as a detection level according to an electromagnetic signal generated by input current. An input end of the control module is connected with an output end of the on-off detection module, to receive the detection level and determine an on-off state change of the flash switch according to the detection level.