Circuit arrangement and method for controlling light emitting components

A circuit arrangement for controlling at least one light emitting component, to which a threshold current is applied, wherein the circuit arrangement comprises:

• at least one supply element for supplying the circuit arrangement with voltage,
• at least one current limiting element being arranged between the supply element and the light emitting component, and
• at least one switching element for controlling the light emitting component by means of at least one switching controller, with the switching element being arranged between the current limiting element and the light emitting component,
• wherein a maximum value of the current is providable by means of the current limiting element, and
• wherein a logical “1” of data to be transmitted by means of the light emitting component is given as periodic switching between a zero value of the current and the maximum value of the current supplied to the light emitting component,
• the switching controller including at least one gate circuit, wherein
• the data is suppliable to one input of the gate circuit,
• oscillator signals are suppliable to another input of the gate circuit, with the oscillator signals being providable by at least one oscillator unit, and
• an output signal of the gate circuit controls the switching element.

A method for controlling at least one light emitting component, to which a threshold current is applied,

• with the circuit arrangement being supplied with voltage by means of at least one supply element, and
• with the light emitting component being controlled by means of at least one switching element arranged between at least one current limiting element and the light emitting component using at least one switching controller,
• wherein a maximum value of the current is provided by means of the current limiting element, and
• wherein the logical “1” of the data to be transmitted by means of the light emitting component is represented by periodic switching between the zero value of the current and the maximum value of the current supplied to the light emitting component,
• wherein the average current flowing through the light emitting component is given
• by the maximum value of the current and
• by the ratio of the length of time of the maximum value of the current to the length of time of the zero value of the current, and
• wherein in case of capacitive support of the current limiting element, the maximum value of the current is given essentially by the average current.

A method for controlling at least one light emitting component, to which a threshold current is applied,

• with the circuit arrangement being supplied with voltage by means of at least one supply element, and
• with the light emitting component being controlled by means of at least one switching element arranged between at least one current limiting element and the light emitting component using at least one switching controller,
• wherein a maximum value of the current is provided by means of the current limiting element, and
• wherein the logical “1” of the data to be transmitted by means of the light emitting component is represented by periodic switching between the zero value of the current and the maximum value of the current supplied to the light emitting component,
• wherein one input of the switching controller is supplied with the data,
• wherein the other input of the switching controller is supplied with oscillator signals being provided by at least one oscillator unit, and
• wherein the output signal of the switching controller controls the switching element.