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.

Date of Patent:
Dec. 25, 2007

Filed:

Feb. 14, 2006
Applicant:

Young-chul Rhee, Gyeonggi-do, KR;

Inventor:

Young-chul Rhee, Gyeonggi-do, KR;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 19/21 (2006.01);
U.S. Cl.
CPC ...
Abstract

An exclusive-OR circuit may include a NAND gate configured to receive a plurality of input signals and a NOR gate configured to receive the plurality of input signals. The exclusive-OR circuit may also include a switch configured to couple an output signal of the NAND gate to an output node when an output signal of the NOR gate is 'LOW', and a pull-down circuit configured to pull down the output node when the output signal of the NOR gate is 'HIGH'. An exclusive-NOR circuit may include a NAND gate configured to receive a plurality of input signals and a NOR gate configured to receive the plurality of input signals. The exclusive-NOR circuit may also include a switch configured to couple an output signal of the NOR gate to an output node when an output signal of the NAND gate is “HIGH”, and a pull-up circuit configured to pull up the output node when the output signal of the NAND gate is “LOW”.


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