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:
Jan. 25, 2011
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 performs a refresh operation stably even while a temperature continuously changes at near a specific temperature. The semiconductor memory device includes an on die thermal sensor (ODTS) and a control signal generator. The on die thermal sensor (ODTS) outputs a thermal code corresponding to a temperature of the semiconductor memory device. The control signal generator generates a self refresh control signal in response to the thermal code, wherein a state of the self refresh control signal does not change when the temperature variation is less than a predetermined value.