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:
Mar. 27, 2012
Filed:
Apr. 29, 2011
Yasuo Satoh, Ibaraki, JP;
Eric Booth, Boise, ID (US);
Yasuo Satoh, Ibaraki, JP;
Eric Booth, Boise, ID (US);
Micron Technology, Inc., Boise, ID (US);
Abstract
Duty cycle correction systems and methods of adjusting duty cycles are provided. One such duty cycle correction system includes a duty cycle adjustor and a variable delay line coupled to the output of the duty cycle adjustor. First and second phase detectors have first inputs coupled to the output of the duty cycle adjustor through an inverter and second inputs coupled to the output of the variable delay line. The phase detectors cause the delay line to align rising or falling edges of signals at the output of the delay line with rising or falling edges, respectively, of signals at the output of the inverter. The controller simultaneously causes the duty cycle adjustor to adjust the duty cycle of the output clock signal until the rising and falling edges of signals at the output of the delay line are aligned with rising and falling edges, respectively, of signals at the output of the inverter.