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. 09, 2016
Filed:
Dec. 01, 2015
Elite Semiconductor Memory Technology Inc., Hsinchu, TW;
Shu-Han Nien, Changhua County, TW;
ELITE SEMICONDUCTOR MEMORY TECHNOLOGY INC., Hsinchu, TW;
Abstract
An exemplary embodiment of the present disclosure illustrates a duty cycle correction apparatus for fast adjusting internal clocks to have specific duty cycles. Firstly, a reference clock is adjusted to have one specific duty cycle in response to analog feedback clocks. Then, by using a phase detector, phases of the reference clock and one internal clock are compared to generate a phase detection signal. Next, by using a digital-analog converter, complementary signals are generated according to a phase detection signal received by the counter, and the signals are used to adjust the duty cycles of the internal clocks. When the complementary signals make the duty cycle of the internal clock equals to the specific duty cycle, codes of the complementary signals are recorded.