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. 29, 2016
Filed:
Aug. 16, 2012
Kazunori Suzuki, Hitachinaka, JP;
Keiichi Nakada, Hitachinaka, JP;
Ryo Sato, Hitachinaka, JP;
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, JP;
Abstract
A gas flow rate measuring apparatus including a gas flow rate detection circuit configured to output a first analog signal of a gas flow rate of a gas; a gas temperature detection element configured to output a second analog signal of a temperature of the gas or a temperature of an integrated circuit; analog-to-digital converters for converting the analog signals into respective digital signals; a digital signal correction device comprising a map table and configured to correct a characteristic bend of the first digital signal based on the map table and the second digital signal, wherein the map table comprises correction constants arranged as lattice points, wherein a first number of lattice points in a first region of the characteristic bend of the gas flow rate signal is larger than a second number of lattice points of a second region outside the first region of the characteristic bend.