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:
Aug. 02, 2011
Filed:
Jan. 20, 2010
Hongquan Sun, Shenzhen, CN;
Hongquan Sun, Shenzhen, CN;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
A phase locked loop (PLL) and a method for charging the PLL are disclosed. The charge circuit includes: a threshold judging module, adapted to output a signal to a receiving module, and when the voltage of a filter reaches a preset threshold, output a valid signal to the receiving module; the receiving module, adapted to receive a trigger signal and output a first control signal to a charging module, and when the signal from the threshold judging module is a valid signal, adapted to output a second control signal to the charging module; the charging module, adapted to charge the filter when receiving the first control signal and stop charging the filter when receiving the second control signal. So that a better voltage may be provided to the PLL to shorten the locking time of the PLL.