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:
Mar. 20, 2018
Filed:
Mar. 07, 2016
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Hiroyuki Nakamoto, Kawasaki, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
A circuit includes a PMOS transistor having a source coupled to an input node and a drain coupled to an output node, a control circuit operating with a voltage of an internal line to control a gate voltage of the PMOS transistor, a comparator operating with the voltage of the internal line to cause a comparator output to change from a first state to a second state in response to a drop of voltage of the input node, a switch circuit configured to connect the input node to the internal line when the comparator output is in the first state, and to connect the output node to the internal line when the comparator output is in the second state, and a block circuit configured to block a path from the output node to the input node through the PMOS transistor when the comparator output is in the second state.