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. 27, 2009
Filed:
Jun. 29, 2007
Chun-seok Jeong, Kyoungki-do, KR;
Kee-teok Park, Kyoungki-do, KR;
Chun-Seok Jeong, Kyoungki-do, KR;
Kee-Teok Park, Kyoungki-do, KR;
Hynix Semiconductor, Inc., Gyeonggi-do, KR;
Abstract
A semiconductor memory device includes: a temperature information output unit for measuring an internal temperature of the semiconductor memory device, and generating a plurality of flag signals, each voltage level of which varies according to the measured internal temperature; a self-refresh oscillation unit for providing a self-refresh period corresponding to the measured internal temperature in response to the plurality of flag signals; and a temperature information control unit for determining a measuring period of the temperature information output unit in response to a temperature sensing enable signal and the plurality of flag signals.