Issued Patents

  1. 9,470,787 Interrogator and system employing the same
  2. 9,135,669 Interrogation system employing prior knowledge about an object to discern an identity thereof
  3. 9,035,774 Interrogator and interrogation system employing the same
  4. 8,948,279 Interrogator and interrogation system employing the same
  5. 8,542,717 Interrogator and interrogation system employing the same
  6. 8,391,488 Method and apparatus for using navigation signal information for geo-encryption to enhance security
  7. 8,174,366 Interrogator and interrogation system employing the same
  8. 7,893,840 Interrogator and interrogation system employing the same
  9. 7,671,744 Interrogator and interrogation system employing the same
  10. 7,512,989 Data loader using location identity to provide secure communication of data to recipient devices
  11. 7,501,948 Interrogation system employing prior knowledge about an object to discern an identity thereof
  12. 6,839,539 RF signal repeater in mobile communication systems
  13. 6,522,642 Antenna diversity techniques
  14. 6,501,955 RF signal repeater, mobile unit position determination system using the RF signal repeater, and method of communication therefore
  15. 6,388,997 Timing adjustment control for efficient time division duplex communication
  16. 6,366,566 Efficient communication system using time division multiplexing and timing adjustment control
  17. 6,363,107 Preamble code structure and detection method and apparatus
  18. 6,356,607 Preamble code structure and detection method and apparatus
  19. 6,154,486 Preamble code structure and detection method and apparatus
  20. 6,141,373 Preamble code structure and detection method and apparatus
  21. 6,094,421 Timing adjustment control for efficient time division duplex, frequency division duplex or hybrid time division duplex/frequency division duplex communication
  22. 6,049,538 Efficient communication system using time division multiplexing and timing adjustment control
  23. 6,041,046 Cyclic time hopping in time division multiple access communication system
  24. 5,987,079 Preamble code structure and detection method and apparatus
  25. 5,959,980 Timing adjustment control for efficient time division duplex communication
  26. 5,859,842 Antenna diversity techniques
  27. 5,832,022 Method and apparatus for controlling the modulation index of continuous phase modulated (CPM) signals
  28. 5,818,371 Coherent synchronization and processing of pulse groups
  29. 5,802,046 Efficient time division duplex communication system with interleaved format and timing adjustment control
  30. 5,784,403 Spread spectrum correlation using saw device
  31. 5,754,584 Non-coherent spread-spectrum continuous-phase modulation communication system
  32. 5,745,484 Efficient communication system using time division multiplexing and timing adjustment control
  33. 5,742,583 Antenna diversity techniques
  34. 5,689,502 Efficient frequency division duplex communication system with interleaved format and timing adjustment control
  35. 5,671,219 Communication protocol for spread spectrum communication
  36. 5,648,955 Method for power control in a TDMA spread spectrum communication system
  37. 5,535,237 Method and system for a multi channel and search global position system signal processor
  38. 5,347,284 System and method for a digital navigation satellite receiver
  39. 5,245,628 Enhanced L1/L2 code channel for global positioning system receivers
  40. 5,185,610 GPS system and method for deriving pointing or attitude from a single GPS receiver