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:
Apr. 12, 2011
Filed:
Jun. 29, 2007
Zhen Qin, Guangdong Province, CN;
Xuefeng Pan, Guangdong Province, CN;
Tianli Jiang, Guangdong Province, CN;
Yingjie Zhou, Guangdong Province, CN;
Xianyin LI, Longgang Shenzhen, CN;
Zhen Qin, Guangdong Province, CN;
Xuefeng Pan, Guangdong Province, CN;
Tianli Jiang, Guangdong Province, CN;
Yingjie Zhou, Guangdong Province, CN;
Xianyin Li, Longgang Shenzhen, CN;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
A system for line powering includes at least one office-end PSU, one standby PSU and one power switching unit. The office-end PSU provides power for a group of subscriber lines in a centralized manner. The power switching unit monitors the power supply status of the office-end PSU and controls the switching between the office-end PSU and standby PSU. In embodiments of the invention, different rectifier/boost circuits and different step-down circuits need not be set for each pair of subscriber lines between the office-end PSU and the remote device. When an office-end PSU fails to supply power, the standby PSU can be switched over quickly to supply power for the remote device, which cuts down the cost for designing the office-end PSU and the standby PSU while ensuring the reliability of power supply for the remote device.