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:
Sep. 28, 2010
Filed:
Nov. 30, 2009
Applicant:
Chung-zen Chen, Hsinchu, TW;
Inventor:
Chung-Zen Chen, Hsinchu, TW;
Assignee:
Elite Semiconductor Memory Technology Inc., Hsinchu, TW;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03K 19/0175 (2006.01);
U.S. Cl.
CPC ...
Abstract
A voltage level shifter comprises a voltage adjustment circuit, an inverter, a first NMOS transistor, a second NMOS transistor, a first PMOS transistor, and a second NMOS transistor. The voltage adjustment circuit is configured for receiving a first voltage and a second voltage and for generating an adjustment voltage. When the first voltage is higher than the second voltage, the adjustment voltage is substantially equal to the first voltage, and when the first voltage is lower than the second voltage, the adjustment voltage is substantially equal to the second voltage.