Assignee
LUMA TELECOM INC
US6 patents
Top patents by PatentIndex Score
US4943994AJul 24, 1990
Still picture picturephone communications system
LUMA TELECOM INC79 citations94
US4932047AJun 5, 1990
Conversational video phone
LUMA TELECOM INC141 citations94
US4715059ADec 22, 1987
Conversational video phone
LUMA TELECOM INC127 citations94
US4918718AApr 17, 1990
Quadrature amplitude modulation with line synchronization pulse for video telephone
LUMA TELECOM INC30 citations86
US4926245AMay 15, 1990
Quadrature amplitude modulation preserving one channel zero crossing for video telephone
LUMA TELECOM INC8 citations73
US4739413AApr 19, 1988
Video-optimized modulator-demodulator with adjacent modulating amplitudes matched to adjacent pixel gray values
LUMA TELECOM INC16 citations73