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:
Nov. 20, 2018
Filed:
Oct. 16, 2017
Lear Corporation, Southfield, MI (US);
Stefan Klinger, Sindelfingen, DE;
Lear Corporation, Southfield, MI (US);
Abstract
A method of monitoring the operating status of one or more LEDs contained in a vehicle lamp array includes an initial step of calculating which of the LEDs are to be turned on (and/or at what PWM rate those LEDs are to be illuminated) using the desired brightness signals. The PWM rates that correspond with desired brightness signals are stored in a memory device. The stored PWM rates are then sent to one or more switching elements connected between the LEDs and a source of electrical energy. The operating statuses of the LEDs are sent back to the memory device and stored therein. The actual brightness of the LEDs is compared with a predetermined minimum brightness for that LED(s). Lastly, an alarm is generated if the actual brightness of the LEDs is not at least equal to the predetermined minimum brightness for the same LED(s) stored in the memory device.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile