1
John P Lappington, Susan K Marshall, Wayne Y Yamamoto, Cameron A Wilson: Transaction based interactive television system. Thomson Multimedia, Jeffrey D Carter, March 31, 1998: US05734413 (294 worldwide citation)

An interactive television system where interactive information is inserted in the vertical blanking interval of a standard television signal or some other appropriate medium. The signal is received and decoded by a settop device which sends the decoder signal, via an infrared signal, to a handheld d ...


2
John P Lappington, Susan K Marshall, Wayne Y Yamamoto, Cameron A Wilson, Eric C Berkobin, Richard S Simons: Interactive television security through transaction time stamping. Zing Systems, Fliesler Dubb Meyer & Lovejoy, May 21, 1996: US05519433 (190 worldwide citation)

A system for providing security on an interactive television system. Two sets of interactive data, with time stamps, are separately sent to a remote location. At the remote location, the time stamps are checked against a remote clock, a time difference being noted for both sets of data. The two time ...


3
John P Lappington, Susan K Marshall, Wayne Y Yamamoto, Cameron A Wilson, Eric C Berkobin, Richard S Simons: Interactive television security through transaction time stamping. Thomson Multimedia, Jeffrey D Carter, June 9, 1998: US05764275 (128 worldwide citation)

A system for providing security on an interactive television system. Two sets of interactive data, with time stamps, are separately sent to a remote location. At the remote location, the time stamps are checked against a remote clock, a time difference being noted for both sets of data. The two time ...


4
John P Lappington, Susan K Marshall, Wayne Y Yamamoto, Cameron A Wilson: Transaction based interactive television system. Thomson Multimedia, Gregory P Gadson, June 10, 1997: US05638113 (109 worldwide citation)

An interactive television system where interactive information is inserted in the vertical blanking interval of a standard television signal or some other appropriate medium. The signal is received and decoded by a settop device which sends the decoder signal, via an infrared signal, to a handheld d ...