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:
Feb. 13, 2007
Filed:
Apr. 28, 2005
Applicants:
Jong-hyun Choi, Gyeonggi-do, KR;
Beob-rae Cho, Gyeonggi-do, KR;
Young-hun Seo, Gyeonggi-do, KR;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 7/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A semiconductor device includes a DRAM and a temperature sense circuit. The DRAM has a refresh period that varies responsive to a temperature signal. The temperature sense circuit is configured to generate the temperature signal having a first binary value in response to sensing a temperature of the DRAM of at least a first temperature level, and to generate the temperature signal having a second binary value in response to sensing a temperature of the DRAM of less than a second temperature level, wherein the second temperature value is less than the first temperature value.