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. 01, 2008
Filed:
Mar. 28, 2006
Applicants:
Min-yeol Ha, Gwacheon-si, KR;
Gyu-hong Kim, Yongin-si, KR;
Inventors:
Min-Yeol Ha, Gwacheon-si, KR;
Gyu-Hong Kim, Yongin-si, KR;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B 5/24 (2006.01); H03L 1/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A refresh control circuit includes a reference voltage generating circuit and an oscillator unit. The reference voltage generating circuit generates a reference voltage based on a variation in a drain-to-source voltage of a field effect transistor according to a temperature variation. The oscillator unit generates a pulse signal having a period that varies according to the temperature based on the reference voltage. The refresh period is thereby controlled automatically, in accordance with the operating temperature.