About: http://webisa.webdatacommons.org/305814897

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The system of claim 8 wherein said detector means further comprises activity detector means for receiving each incoming signal, detecting each incoming signal in a form of an echo signal, and providing a corresponding activity signal.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au