Trigger/Data Acquisition Issues and Challenges for the Next Generation of Experiments at the Future International Linear Collider

This paper presents the current trigger and data acquisition view of the four detector concepts of the worldwide study of the International Linear Collider (ILC) study group. First, a better knowledge of the ILC physics and machine event backgrounds and data bandwidths of the various sub-detectors will give the size of the full data flow of the read out system. Second, the concept of 'Software Trigger' architecture with its consequences on the read-out electronics designs under development is discussed. Third, some preliminary ideas for the event selection, collection and analysis will be presented. Finally, a generic architectural model of the whole system uniform across each concept will be discussed with a possible model for implementation in a global worldwide networking environment.