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. 06, 2001
Filed:
Dec. 02, 1999
Sung Ho Wang, Seoul, KR;
Young-Hyun Jun, Seoul, KR;
Hyundai Electronics Industries Co., Ltd., Ichon, KR;
Abstract
A clock synchronizing circuit provides reduced power consumption. A first phase comparator compares an external clock signal delayed for a predertermined time with a feedback clock signal to detect their phase error, and a second phase comparator compares an external clock signal with a feedback clock signal delayed for a predetermined time to detect their phase error. A charge pump changes a charge amount depending on phase error detecting signals from the first and second phase error comparators, and a phase compensator compensates the phase of the external clock signal depending on the charge amount from the charge pump. A controller controls the overall system or some portion thereof to be converted to a power save mode if the phase of the external clock signal is synchronized with that of the feedback clock signal by the phase compensator.