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:
Oct. 11, 2011
Filed:
Dec. 30, 2008
Applicant:
Jeong-hun Lee, Ichon, KR;
Inventor:
Jeong-Hun Lee, Ichon, KR;
Assignee:
Hynix Semiconductor Inc., , KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 20/20 (2006.01); G11C 29/00 (2006.01); G01R 31/28 (2006.01); H03L 7/00 (2006.01); H03L 7/06 (2006.01); H03K 5/12 (2006.01); H03H 11/26 (2006.01);
U.S. Cl.
CPC ...
Abstract
An apparatus for testing setup/hold time includes a plurality of data input units, each configured to calibrate setup/hold time of input data in response to selection signals and setup/hold calibration signals, and an off-chip driver calibration unit configured to generate the selection signals and the setup/hold calibration signals by using the input data input of one of the plurality of data input units.