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:
Nov. 05, 2013
Filed:
Jul. 01, 2011
Applicants:
Shih-chin Lin, Hsinchu County, TW;
Pei-geng MA, Hsinchu County, TW;
Yen-hsueh Huang, Taipei, TW;
Inventors:
Assignee:
United Microelectronics Corp., Hsinchu, TW;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11C 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In an exemplary hidden refresh method for a pseudo SRAM, a system clock is received. A duty-on period of the system clock signal is adapted for performing a data access operation such as write or read operation. A refresh clock signal subjected to the control of the system clock signal is generated. A duty-on period of the refresh clock signal is non-overlapped with the duty-on period of the system clock signal. A refresh control pulse then is triggered by a starting edge of the duty-on period of the refresh clock signal to activate a word line, for performing a refresh operation.