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. 15, 1999
Filed:
Nov. 14, 1997
Applicant:
Inventor:
Chuan He, Columbus, IN (US);
Assignee:
Cummins Engine Company, Inc., Columbus, IN (US);
Primary Examiner:
Int. Cl.
CPC ...
G01M / ;
U.S. Cl.
CPC ...
701110 ; 73116 ; 123419 ; 123436 ;
Abstract
A vehicle/engine speed data collection and preprocessing method and apparatus comprises obtaining speed signal data, typically from a speed sensor; computing a linear equation of the speed signal data; adding artificial data to the speed signal data in accordance with the linear equation; filtering the speed signal data having the artificial data added thereto; and removing the filtered artificial data from the filtered data. The technique minimizes the transient effects of filtering, particularly at the data boundaries.