Global Communications [NPE] filed suit against DSI Systems, North American Cable Equipment, PerfectVision Manufacturing, and PDI Communications over eight patents related to satellite television signal receivers.  Global Communications has filed four prior suits since 2002 against DirecTV, Dish Network, EchoStar, and Sonora Design Associates. The patents-in-suit were originally issued to inventors, James Green and Austin Coker, prior to being assigned to Global Communications.  10/21, Northern District of Florida, 4:2011cv00541.