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. 28, 2017
Filed:
May. 18, 2015
Denso Corporation, Kariya, Aichi-pref., JP;
Yukihiko Tanizawa, Kariya, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
An A/D conversion circuit includes: first/second pulse circulation circuits delaying an input signal and circulating a pulse signal; a circulation number difference measurement section outputting a difference between circulation time numbers of the pulse signal through the first/second pulse circulation circuits; a conversion control circuit outputting the difference as A/D conversion data when outputting a conversion data output processing signal; and a signal ratio change circuit: outputting, from a first output terminal, a voltage calculated by adding the reference voltage and a voltage obtained by multiplying a differential voltage, obtained by subtracting the reference voltage from the analog input voltage, by a first proportional coefficient; and outputting, from a second output terminal, a voltage calculated by subtracting, from the reference voltage, a voltage obtained by multiplying the differential voltage by a second proportional coefficient. The first/second pulse circulation circuits receive power source voltage supply from the first/second output terminals and a ground line.