The invention relates to a control method for the electrical actuator of a variable valve train, the actuator being embodied in the form of a worm gear in which a sensor detects a position value of an eccentric shaft, a control difference is generated in a feedback branch with the use of the measured position value, and the electrical actuator is actuated. A router propagates multicast group update information based on the update information and the routing tree information. The shaft can be fixed to one of the elevation carriage and trunnion structure, and the other of the elevation carriage and trunnion structure slides on the cantilevered portion. The data streams are combined by a multiplexer module into one data stream called the transport stream. The requesting unit requests general digital media corresponding to the time period from a general digital media source. A top arm extends upwardly from the base arm and includes a top arm cap for covering at least one of the locking nuts.