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. 06, 2011
Filed:
Apr. 29, 2011
Ja Yol Lee, Daejeon, KR;
Seong DO Kim, Daejeon, KR;
Mun Yang Park, Daejeon, KR;
Cheon Soo Kim, Daejeon, KR;
Hyun Kyu Yu, Daejeon, KR;
Ja Yol Lee, Daejeon, KR;
Seong Do Kim, Daejeon, KR;
Mun Yang Park, Daejeon, KR;
Cheon Soo Kim, Daejeon, KR;
Hyun Kyu Yu, Daejeon, KR;
Electronics and Telecommunications Resarch Instittute, Daejeon, KR;
Abstract
There is provided a digital lock detector and a frequency synthesizer using the same. The digital lock detector includes a comparator unit receiving a plurality of control bits, and generating a bit signal to notice a lock condition of the plurality of control bits; a delay cell block generating a plurality of delay signals based on the bit signal, and outputting a clock signal by combining the bit signal and the plurality of delay signals; and a detection unit detecting a shift time of the clock signal, and generating a lock indication signal according to the detection result.