Inventor

FARIAS LUIS V

US2 patents

Patents

2 patents

US4891806AJan 2, 1990

Constellation multiplexed inband secondary channel for voiceband modem

RACAL DATA COMMUNICATIONS INC154 citations93

US4761784AAug 2, 1988

Modem and method using multidimensional coded modulation

RACAL DATA COMMUNICATIONS INC40 citations89