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:
Apr. 12, 2011
Filed:
Oct. 22, 2009
Applicants:
Yukinori Uchino, Kanagawa, JP;
Nobuaki Otsuka, Tokyo, JP;
Inventors:
Yukinori Uchino, Kanagawa, JP;
Nobuaki Otsuka, Tokyo, JP;
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A level shifter circuit converts a signal generated by an internal circuit which operates with a first power supply, into a signal by a second power supply having voltage higher than that of the first power supply. The voltages at substrate terminals of two NMOS transistors, to which complementary two signals by the first power supply are input, is boosted to voltage higher than circuit ground potential in a period in which a voltage level of one of the two input signals and a voltage level of an output signal by the second power supply do not coincide with each other.