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:
Jul. 30, 2019
Filed:
Dec. 15, 2014
Michael Mashkevich, West Bloomfield, MI (US);
David a Lescamela, Macomb, MI (US);
James M Burcar, Rochester, MI (US);
Ron R Peteuil, Rochester Hills, MI (US);
Michael Mashkevich, West Bloomfield, MI (US);
David A Lescamela, Macomb, MI (US);
James M Burcar, Rochester, MI (US);
Ron R Peteuil, Rochester Hills, MI (US);
FCA US LLC, Auburn Hills, MI (US);
Abstract
A dimming circuit for an indicator switch has a control input, a dimming state and a non-dimming state. The dimming circuit is responsive to the presence of a backlight PWM signal at the control input of the dimming circuit to switch to the dimming state and responsive to the absence of the backlight PWM signal at the control input of the dimming circuit to switch to the non-dimming state. In the dimming state a high resistance of the dimming circuit is coupled in series with the indicator LED and a LED drive output of the function control module and in the non-dimming state a low resistance of the dimming circuit is coupled in series with the indicator LED and the LED drive output of the function control module. The high resistance has a resistance higher than the low resistance.