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:
Apr. 21, 2015
Filed:
Mar. 13, 2013
Applicant:
SK Hynix Inc., Gyeonggi-do, KR;
Inventor:
Kie-Bong Ku, Gyeonggi-do, KR;
Assignee:
SK Hynix Inc., Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 29/04 (2006.01); G11C 29/40 (2006.01); G11C 7/10 (2006.01); G11C 29/44 (2006.01);
U.S. Cl.
CPC ...
G11C 29/40 (2013.01); G11C 7/1051 (2013.01); G11C 7/106 (2013.01); G11C 29/44 (2013.01);
Abstract
A semiconductor memory device includes a compression unit configured to compress a plurality of data, which are read from a memory cell region based on successive read commands and addresses, and to successively output the compressed data during a first test mode, a latching unit configured to latch the compressed data in response to a read strobe signal and to fix the latched value when a fail is detected from the compressed data during the first test mode, and an output unit configured to output the latched value to the outside during a second test mode.