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:
Jun. 30, 2009
Applicant:
Kwang-jin NA, Gyeonggi-do, KR;
Inventor:
Kwang-Jin Na, Gyeonggi-do, KR;
Assignee:
Hynix Semiconductor Inc., Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 8/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A semiconductor memory apparatus includes a clock input unit configured to receive a system clock and a data clock, a data clock phase regulation unit configured to regulate a frequency of the data clock, and delay the data clock by a delay varied in accordance with a training information signal, and a clock phase comparison unit configured to compare a phase of an output clock of the data clock phase regulation unit with a phase of the system clock, and generate the training information signal according to a result of the comparison.