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:
Nov. 03, 1998
Filed:
Jan. 29, 1997
Shinri Fukuda, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A PLL frequency synthesizer has a detecting circuit 7 integrating a difference of an up signal and a down signal down, and outputting a control signal Vg according to the difference, and a charge circuit 5 receiving the control signal Vg, up signal and down signal, charging an output node by a first current ability when the control signal Vg is at a high level and the up signal and the down signal are at high level and at low level, respectively, discharging the output node by first current ability when the control signal Vg is at high level and the up signal and the down signal are at low level and at high level, respectively, charging the output node by second current ability lower than first current ability when the control signal Vg is at high level and the up signal and the down signal are at high level and at low level, respectively, and discharging the output node by second current ability when the control signal is at low level and the up signal and the down signal are at low level and high level.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile