Abstract: A method for coating a rotating surface region of a workpiece by laser build-up welding includes fusing a powdery coating material prior to impact on the workpiece in a laser beam that is directed at the surface region, capturing a spatially resolved intensity profile of thermal radiation emitted by the workpiece, comparing at least one property of the intensity profile with at least one predefined target value, and modifying at least one parameter of a coating procedure based on a result of the comparison.

Abstract: A circuit assembly and a method for controlling operation states The circuit can be shifted by idle signals from the active operation state into the idle state and can be shifted by wake-up signals in an edge-triggered manner from the idle state into the active operation state if the wake-up signal executes a change in potential from a non-activation potential to an activation potential. The wake-up signals are supplied to a wake-up signal input of the circuit with the interposition of a masking circuit, which passes through the wake-up signals to the wake-up signal input in the idle state of the circuit and, in the active operation state of the circuit, applies to the wake-up signal input a predetermined electric masking potential, from which a change in potential towards the activation potential of the wake-up signal shifts the circuit from the idle state into the active operation state.