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:
Jul. 31, 2018
Filed:
Apr. 15, 2016
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Yoichi Kawano, Setagaya, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
A temperature compensation circuit includes: an oscillation circuit configured to include a replica amplifier of a target amplifier to be subjected to temperature compensation and oscillate by feeding an output of the replica amplifier back to an input; a time measurement circuit configured to measure a measured rise time taken from a start of oscillation of the oscillation circuit until an amplitude of an oscillation signal reaches a specific amplitude in the oscillation circuit; and a control circuit configured to compare a reference rise time of the oscillation circuit measured under a reference condition and the measured rise time and change a driving condition of the replica amplifier such that the measured rise time becomes substantially equal to the reference rise time.