Hella Gmbh & Co Kgaa

Bernd Schulte-Eversum

Dieter Nietfeld

Shaham Nemati

A method is provided for operating a control and/or regulating system for a light emitting diode field. At least two first outputs are provided at which control signals for controlling controllable switch elements of the light emitting diode field are tapped. A second output is provided at which control and/or regulating signals for controlling and/or regulating a controllable and/or regulatable power source is tapped. The voltage drop across the light emitting diode field is measured by the first voltage sensor, and when the control and/or regulating signal of the control and/or regulating system falls below a designated voltage value, the controllable and/or regulatable power source is switched off. A constant sensor signal is present at the at least one measuring signal input, and the sensor signal is larger than the designated voltage value.

Control and/or regulating system, circuit arrangement and method for actuating light-emitting diodes (LEDs) in an LED field

The invention relates to an arrangement including an LED pixel matrix and a driver circuit for controlling the LED pixel matrix, wherein each LED pixel is formed from a dipole made up of two LEDs connected anti-parallel. The LED pixel matrix includes at least one row and multiple columns of the dipoles forming the LED pixel, and the dipoles are connected with a first connection to a shared line. The shared line is connected to a node between a second connection of a first controllable switch assigned to the rows and to a first connection of a second controllable switch assigned to the row. A first connection of the first switch assigned to the row is connected to a first connection of the arrangement, and a second connection of the second switch assigned to the row is connected to a second connection of the arrangement.

Growing community of inventors

Geseke, Germany

Bernd Schulte-Eversum