1. A peripheral interface for transferring a data stream between a control computer and a peripheral device, wherein the control computer includes a central processing unit configured for generating a data stream across the peripheral interface for controlling the peripheral device, and wherein the data stream sent by the central processing unit to the peripheral interface comprises control data for the peripheral device, the control data including a segment with substitute control data to be output by the peripheral interface in the event of an input data stream interruption and a leading substitute data label as an instruction for a modification of the data stream output to the peripheral device by the peripheral interface, and wherein the instruction contains at least one of a conditional jump command and an unconditional jump command to continue the output at a stream position which is determined from the jump command or is derivable from the jump command, the peripheral interface comprising: a controller for receiving as an input data stream the data stream sent by the central processing unit to the peripheral interface, for identifying in the input data stream the instruction for a modification of the data stream, for modifying the data stream for output by the peripheral device in accordance with the identified instruction to continue the output at a stream position which is determined from the jump command or is derivable from the jump command, and for delivering the modified data stream from the peripheral interface to the peripheral device, wherein the peripheral interface outputs the substitute control data to the peripheral device in the event of an input data stream interruption.