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, 2016
Filed:
May. 18, 2015
Fci Inc., Seognam-si, Gyeonggi-do, KR;
Je Cheol Moon, Seongnam-si, KR;
Myung Woon Hwang, Seongnam-si, KR;
FCI, Inc., , KR;
Abstract
Disclosed are an apparatus for lock detection suitable for a fractional-N frequency synthesizer and a method thereof. The lock detector for use in the fractional-N frequency synthesizer includes a delay unit delaying an N-divider output frequency clock based on an output value of a fraction ratio modulator, a lock detection unit outputting a lock detection signal by comparing a reference frequency clock with the N-divider output frequency clock delayed by the delay unit, a counter counting the number of lock detection signals received from the lock detection unit, and a controller issuing a command to output a lock identification signal based on the number of lock detection signals counted by the counter.