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:
May. 17, 1994
Filed:
Apr. 29, 1992
Ronald L Coburn, Fuquay-Varina, NC (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A Phase Lock Loop (PLL) receives input signals from a local area network (LAN) and recovers data and clock signals therefrom. The PLL includes a charge pump which is responsive to pump-up or pump-down signals provided by a phase detector. A level determination circuitry scales the charge pump current in proportion to the time elapsing between transitions in the input signals. The charge pump, phase detector and level determination circuitry provide a constant average amps per radian gain and is insensitive to variations in the input signals.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile