Inventor
CHANG MING U
US29 patents
⚠️ This page may combine multiple inventors who share the name “CHANG MING U”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
DIRECTV GROUP INC
20 patentsUS7187949B2Mar 6, 2007
Multiple basestation communication system having adaptive antennas
DIRECTV GROUP INC71 citations98
US7167704B2Jan 23, 2007
Communication system using multiple link terminals for aircraft
DIRECTV GROUP INC63 citations98
US6785553B2Aug 31, 2004
Position location of multiple transponding platforms and users using two-way ranging as a calibration reference for GPS
DIRECTV GROUP INC56 citations96
US7181162B2Feb 20, 2007
Communication system using multiple link terminals
DIRECTV GROUP INC33 citations92
US7103317B2Sep 5, 2006
Communication system using multiple link terminals for aircraft
DIRECTV GROUP INC39 citations92
US7068616B2Jun 27, 2006
Multiple dynamic connectivity for satellite communications systems
DIRECTV GROUP INC27 citations92
US7027769B1Apr 11, 2006
GEO stationary communications system with minimal delay
DIRECTV GROUP INC23 citations92
US6963548B1Nov 8, 2005
Coherent synchronization of code division multiple access signals
DIRECTV GROUP INC20 citations92
US6756937B1Jun 29, 2004
Stratospheric platforms based mobile communications architecture
DIRECTV GROUP INC43 citations92
US6751458B1Jun 15, 2004
Architecture utilizing frequency reuse in accommodating user-link and feeder-link transmissions
DIRECTV GROUP INC28 citations92
US7200360B1Apr 3, 2007
Communication system as a secondary platform with frequency reuse
DIRECTV GROUP INC39 citations91
US6914557B2Jul 5, 2005
Micro cell architecture for mobile user tracking communication system
DIRECTV GROUP INC17 citations91
US7400857B2Jul 15, 2008
Communication system using multiple link terminals
DIRECTV GROUP INC31 citations90
US7809403B2Oct 5, 2010
Stratospheric platforms communication system using adaptive antennas
DIRECTV GROUP INC15 citations84
US6829479B1Dec 7, 2004
Fixed wireless back haul for mobile communications using stratospheric platforms
DIRECTV GROUP INC17 citations84
US6941107B2Sep 6, 2005
Stratospheric platform based surface vehicle tracking and mobile data network
DIRECTV GROUP INC7 citations74
US8706167B2Apr 22, 2014
Communication system for mobile users using adaptive antenna with auxiliary elements
DIRECTV GROUP INC2 citations63
US7929984B2Apr 19, 2011
Multiple basestation communication system having adaptive antennas
DIRECTV GROUP INC2 citations63
US7089000B1Aug 8, 2006
Multi-node wireless communication system with multiple transponding platforms
DIRECTV GROUP INC5 citations63
US7236508B2Jun 26, 2007
Application of complex codes to maximize feeder link utilization
DIRECTV GROUP INC0 citations51
HUGHES ELECTRONICS CORP
6 patentsUS6337980B1Jan 8, 2002
Multiple satellite mobile communications method and apparatus for hand-held terminals
HUGHES ELECTRONICS CORP35 citations95
US6295440B2Sep 25, 2001
Multiple satellite mobile communications method and apparatus for hand-held terminals
HUGHES ELECTRONICS CORP32 citations95
US6725013B1Apr 20, 2004
Communication system having frequency reuse in non-blocking manner
HUGHES ELECTRONICS CORP33 citations92
US6606307B1Aug 12, 2003
Techniques for utilization of bandwidth space assets
HUGHES ELECTRONICS CORP23 citations92
US6501941B1Dec 31, 2002
Method for identifying growth limits of handheld services for mobile satellite communications
HUGHES ELECTRONICS CORP19 citations92
US6807397B2Oct 19, 2004
Method for identifying growth limits of handheld services for mobile satellite communications
HUGHES ELECTRONICS CORP1 citations51