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:
Jan. 25, 2000
Filed:
Jun. 15, 1998
Applicant:
Inventors:
Charles N Villa, San Jose, CA (US);
Claes Georg Andersson, Fremont, CA (US);
Assignee:
Snap-On Technologies, Inc., Lincolnshire, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ; G01R / ; F02P / ;
U.S. Cl.
CPC ...
324379 ; 324378 ; 324 7612 ;
Abstract
A method and apparatus for detecting and displaying automotive fuel injector voltage signal pulse width which includes signal detection circuits for capturing the rising and falling edges of an input signal having positive and negative voltage swings is disclosed. Upon detecting a rising edge or a falling edge of a positive or negative voltage of the input signal, a corresponding software routine is executed to carry out the process of measuring the pulse width of a pulse of the input signal. The measured pulse width is then displayed in numerical and/or histogramic formats.