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. 20, 2013
Filed:
Apr. 20, 2012
Ming-chien Huang, Banqiao, TW;
Chien-yi Chang, Hsinchu, TW;
Ming-Chien Huang, Banqiao, TW;
Chien-Yi Chang, Hsinchu, TW;
Elite Semiconductor Memory Technology, Inc., Hsinchu, TW;
Abstract
A circuit for generating multiphase clock signals and corresponding indication signals is provided. The circuit includes a multiphase clock generation circuit, a DLL circuit, a timing circuit, and a phase comparison circuit. The multiphase clock generation circuit receives an external clock to provide a plurality of first clock signals, phases of which differ from one another. The DLL circuit receives the external clock signal to provide a second clock signal. The timing circuit receives the second clock signal and a comparison signal to provide a plurality of indication signals. Each of the plurality of indication signals has rising edges which lead the rising edges of a corresponding one of the first clock signals. The phase comparison provides the comparison signal if a delayed phase of the corresponding one of the indication signals is within a phase of one of the first clock signals.