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. 29, 2008
Filed:
Feb. 09, 2006
Applicant:
Atsuhiko Okada, Tokyo, JP;
Inventor:
Atsuhiko Okada, Tokyo, JP;
Assignee:
Oki Electric Industry Co., Ltd., Tokyo, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03K 19/0175 (2006.01); G06F 13/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A mixed-voltage interface transfers signals serially between a pair of circuit blocks operating at different voltage levels in a semiconductor integrated circuit. Control, address, and data signals are multiplexed onto a common signal line. The number of necessary signal lines is thereby greatly reduced, as compared with parallel signal transfer, and a separate electrostatic discharge protection circuit can be provided for each signal line without the need to devote excessive space to protection circuitry.