Patent · US Active

Circuit arrangement for controlling illuminating means

US7235767B2 · kind B2 · utility

11Cited by

10References

14Claims

0Family size

Assignee

Preh GmbH · DE

Inventors

Thomas Gutbrod · Bad Neustadt an der Saale, DE
Anton Ruettiger · Wildflecken, DE
Harald Brischke · Bad Neustadt an der Saale, DE
Michael Haub · Bad Kissingen, DE

Key dates

Filing date	Jul 24, 2006
Grant date	Jun 26, 2007
Priority date	—
Expiry date	Jul 24, 2026

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02B20/30
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A circuit arrangement is disclosed for controlling an illuminating device, particularly light-emitting diodes, in a control device of a motor vehicle, comprised of at least one illuminating device, which is integrated in a switching circuit having a semiconductor component, and of a microprocessor, in particular having an integrated non-volatile memory, for generating a pulse-width modulated signal, whereby the pulse-width modulated signal is coupled to a control electrode of the semiconductor component, whereby the microprocessor generates at least two pulse-width modulated signals, the pulse-width modulated signals are coupled to the semiconductor component via a logical system and the logical system can be subjected to the action of an additional control signal via the microcomputer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.