Method for activating a processing device and processing device activated in such a way

A method to activate a processing device which processes a surface of a moving, web-shaped work piece at regular intervals, wherein a predetermined time duration passes between a respective activation signal of the processing device and the processing on the surface of the web-shaped work piece, comprising the steps of:

• sensing the movement of the web-shaped work piece with an incremental sensor that generates work pulses, and generating a respective control pulse if a predetermined number of work pulses that correspond to a predetermined path of the web-shaped work piece has been generated, said path corresponding to said regular intervals to process the surface of the work piece, such that a series of control pulses is generated;
• repeatedly detecting a number of the work pulses in a respective time interval that corresponds to the predetermined time duration;
• generating the activation signals wherein each activation signal is respectively generated at each control pulse of the series of control pulses, and the activation signals being offset forward in time relative to the respective control pulse corresponding to the number of work pulses that have been detected in a preceding time interval;
• outputting the activation signals to the processing device;
• and
• wherein an earlier output of the control pulses is executed such that all control pulses are delayed by a predetermined number of work pulses minus a number of work pulses that have been generated between a last interval between two synchronization pulses.

A method to process a moving web-shaped work piece at regular intervals, comprising the steps of:

• providing a processing device that acts on the work piece for the predetermined time delay relative to an activation signal;
• providing an incremental sensor to scan a movement of the web-shaped work piece and to output corresponding work pulses;
• providing a pulse emitter to generate at least two successive synchronization pulses that are separated from one another by a delay time;
• providing a measurement shift register coupled to the pulse emitter and to the incremental sensor, and with the measurement shift register generating a measurement pulse between said two successive synchronization pulses, said measurement pulse being offset by a number of said work pulses between the two successive synchronization pulses;
• providing a buffer register to store the measurement pulse with the offset;
• providing an output shift register having a filter connected at a first input such that every n-th work pulse of said work pulses is let pass by the filter as a first control pulse applied at said first input of the output shift register, said output shift register being connected at a second input with the buffer register via an or-link;
• and
• transferring via said or-link the measurement pulse as a second control pulse to the output shift register, the output shift register being clocked with the work pulses of said incremental sensor so that if said first control pulse is applied at said first input of the output shift register a bit pattern of the output shift register is shifted with the control pulses by one position in a direction towards an output of the output shift register, and wherein each control pulse is output as said activation signal to said processing device.