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:
Jul. 21, 2009
Filed:
Jan. 18, 2008
Ren-hong Luo, Taipei, TW;
Cheng-ta Wei, Hsinchu, TW;
Ren-Hong Luo, Taipei, TW;
Cheng-Ta Wei, Hsinchu, TW;
Faraday Technology Corporation, Hsinchu, TW;
Abstract
A wide-locking range phase locked loop circuit includes a decision unit and a closed loop connection comprising a phase frequency detector, a charge pump, a loop filter, a voltage controlled oscillator, and a multi-modulus divider. The decision unit receives a phase difference signal outputted from phase frequency detector and the control voltage outputted from the loop filter and determines to select a specific divisor form the plurality of divisors provided by the multi-modulus divider if the phase difference signal indicates an unlocked state and the control voltage is not within a standard voltage operation range.