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:
May. 04, 2010
Filed:
Nov. 06, 2008
Seok-bo Shim, Gyeonggi-do, KR;
Seok-Bo Shim, Gyeonggi-do, KR;
Hynix Semiconductor, Inc., Gyeonggi-do, KR;
Abstract
A duty cycle correction circuit and a delay locked loop circuit including the same are capable of reducing area and power consumption of a circuit. The delay locked loop circuit includes a delay locked loop unit, a delay controller, a duty cycle ratio correction circuit, and a duty cycle ratio detector. The delay locked loop unit outputs an internal clock by delaying an external clock in order to compensate a clock skew. The delay controller outputs a delay internal clock by delaying the internal clock in response to correction signals. The duty cycle ratio correction circuit outputs an internal correction clock by increasing or decreasing a high level section of the internal clock according to the correction signals. The duty cycle ratio detector outputs the correction signals in accordance with a duty cycle ratio of the internal correction clock.