A spacecraft data acquisition system comprises a telemetry and command controller, a payload unit, and a bi-directional interface that couples the telemetry and command controller to the payload unit. The interface is a single bi-directional interface that is used to reduce the complexity of the spacecraft....http://www.google.ca/patents/US6792212?utm_source=gb-gplus-sharePatent US6792212 - Spacecraft data acquisition and distribution interface
