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:
Oct. 19, 2004
Filed:
Aug. 27, 2003
Applicant:
Inventor:
Takuo Mukai, Oosaka-fu, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H03L 5/00 ;
U.S. Cl.
CPC ...
H03L 5/00 ;
Abstract
A level shift circuit which performs level shift on a signal output from a first logic circuit operating on a first voltage to output the level-shifted signal to a second logic circuit operating on a second voltage regardless of whether the first voltage is less or greater than the second voltage, by appropriately controlling first and second switching devices using a control circuit depending on the first and second voltages.