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. 07, 2014
Filed:
Mar. 30, 2012
Pingfang Yu, Shenzhen, CN;
Yuesheng Zhu, Shenzhen, CN;
Pingfang Yu, Shenzhen, CN;
Yuesheng Zhu, Shenzhen, CN;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
The embodiments of the present application provide a DSL protection circuit, including: a DSL and POTS broadband and narrowband mixed signal port, a narrowband POTS port, and a splitter, where the DSL and POTS broadband and narrowband mixed signal port is connected to the narrowband POTS port through the splitter, and a line on which an input end or output end of the splitter is cascaded with a restorable current-limited component for limiting abnormal current; a line on which the splitter and the restorable current-limited component are cascaded is connected in parallel with a voltage-limited component for bypass conduction of the splitter; a line on which the DSL and POTS broadband and narrowband mixed signal port is or a line on which the narrowband POTS port is cascaded with an overcurrent fuse component.