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:
Feb. 05, 2013
Filed:
Nov. 08, 2011
Woogeun Rhee, Beijing, CN;
He Rui, Beijing, CN;
Xueyi Yu, Beijing, CN;
Tae-young OH, Seoul, KR;
Joo-sun Choi, Yongin-si, KR;
Zhihua Wang, Beijing, CN;
Woogeun Rhee, Beijing, CN;
He Rui, Beijing, CN;
Xueyi Yu, Beijing, CN;
Tae-Young Oh, Seoul, KR;
Joo-Sun Choi, Yongin-si, KR;
Zhihua Wang, Beijing, CN;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Tsinghua University, Beijing, CN;
Abstract
A phase-locked-loop (PLL) circuit is provided. The PLL circuit includes a phase/frequency detector, a digital filter, a digital low pass filter (LPF), a digitally controlled oscillator (DCO), and a frequency divider. The digital LPF performs a low-pass-filtering on least significant bits of first digital data in a digital mode and generates filtered second digital data. The DCO performs a digital-to-analog conversion on the second digital data and most significant bits of the first digital data to generate a first signal, generates an oscillation control signal based on the first signal, and generates an output clock signal oscillating in response to the oscillation control signal.