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:
Sep. 18, 2012
Filed:
Jan. 07, 2011
Masanori Tanaka, Kanagawa, JP;
Morihisa Hirata, Kanagawa, JP;
Hitoshi Okamoto, Kanagawa, JP;
Renesas Electronics Corporation, Kawasaki-shi, Kanagawa, JP;
Abstract
A protection circuit that includes a first power supply system including a first power supply and a first ground, a second power supply system including a second power supply and a second ground, the second power supply system being connected to the first power supply system via a signal line through which signal transfer is performed between a circuit in the first power supply system and a circuit in the second power supply system, and a control circuit that, when coupled to an electro-static discharge (ESD) stress being applied to the first power supply system controls a switch, the switch being provided between the signal line and the first power supply.