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:
Sep. 17, 2013
Filed:
Oct. 12, 2012
Qualcomm Incorporated, San Diego, CA (US);
Emmanouil Terrovitis, Foster City, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
A delay-locked loop (DLL) circuit is disclosed that can generate an output oscillation signal having a frequency that is an integer multiple of an input oscillation signal. The DLL includes a phase detector, a charge pump, and a voltage-controlled oscillator (VCO). The phase detector generates UP and DN control signals in response to a phase difference between a reference signal and a feedback signal. The charge pump generates a control voltage in response to the UP and DN control signals. The VCO adjusts the frequency of the output oscillation signal in response to the control voltage, generates the reference signal in response to the input oscillation signal, and generates the feedback signal in response to the output oscillation signal.