1. Procedure for the control of a respirator device, in which one can set at least two different pressure levels for a breathable gas supply and in which at least one respirator-treatment parameter is captured by measurement technique and is evaluated for the control of the respirator-treatment pressure; characterized in that at least one of the respirator-treatment parameters is modified as a function of a pattern recognition; in order to carry out the pattern recognition the time-wise evolution of at least one respirator-treatment parameter is captured, at least at intervals, and is analyzed with respect to typical evolution patterns.