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:
Jul. 24, 2007
Filed:
Jul. 27, 2005
Sang-kyun Park, Suwon-si, KR;
Sang-Kyun Park, Suwon-si, KR;
Abstract
In a self refresh period control circuit for controlling a refresh period of a semiconductor memory device in response to operating temperature of the device, a temperature sensor part generates a first period control signal in response to a self refresh start signal or self refresh completion signal, senses operating temperature of the semiconductor memory device in response to a clock signal generated by the self refresh start signal, and generates a corresponding second period control signal. A period magnification control part controls a self refresh period in response to the first and second period control signals. Accordingly, a refresh period characteristic change based on operating temperature, which is causable by an initial self refresh, is implemented.
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