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:
Jun. 07, 2011
Filed:
Feb. 04, 2009
Kimiyoshi Usami, Tokyo, JP;
Kimiyoshi Usami, Tokyo, JP;
Shibaura Institute of Technology, Tokyo, JP;
Abstract
A power-off controlling circuit and a power-off controlling method that control power-off of an integrated circuit based on the size of leakage currents. The power-off controlling circuit includes a model circuit section that includes a model circuit made by modeling a basic circuit of an integrated circuit, a voltage comparing circuit section that compares an output voltage charged by a leakage current occurred at the model circuit and a preset reference voltage, a decision circuit section that measures an arrival time until the output voltage reaches the reference voltage from the compared result and decides a size of the leakage current from the measured result, and a power-off controlling circuit section that controls power-off of the integrated circuit on the basis of the decided size of the leakage current.