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. 01, 2014
Filed:
Nov. 30, 2010
Joel Thomas Ficke, Madison, WI (US);
David Michael Friend, Rochester, MN (US);
Grant Paul Kesselring, Rochester, MN (US);
James David Strom, Rochester, MN (US);
Jianguo Yao, San Jose, CA (US);
Joel Thomas Ficke, Madison, WI (US);
David Michael Friend, Rochester, MN (US);
Grant Paul Kesselring, Rochester, MN (US);
James David Strom, Rochester, MN (US);
Jianguo Yao, San Jose, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
The present invention provides an apparatus and method for a frequency adaptive level shifter circuit. The frequency adaptive level shifter circuit includes a first inverter, a second inverter coupled to the output of the first inverter, a capacitor coupled to the output of the second inverter, and a resistor coupled to the output of the capacitor. The frequency adaptive level shifter circuit further includes a transistor coupled to the output of the resistor, wherein the transistor has a gate connected to a reference voltage, a third inverter coupled to the output of the capacitor, and a fourth inverter coupled to the output of the third inverter and the transistor and outputting the signal.