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. 04, 2002
Filed:
May. 06, 1999
Applicant:
Inventors:
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01F 1/68 ;
U.S. Cl.
CPC ...
G01F 1/68 ;
Abstract
An air flow measuring apparatus, is of a type converting digital values Vadc having a non-linearity characteristic to a flow rate in air flow rate conversion processing. The apparatus, is provided with voltage output conversion processing, uses a QV map formed on a PROM, and is formed so as to obtain a voltage output signal Vout having a property equivalent to a signal Vin outputted from a sensor circuit by converting a smoothed signal Qaf into a voltage value having a non-linearity characteristic.