Inventor
MCLAUGHLIN DONALD W
19 patents
Patents
19 patentsUS4308472ADec 29, 1981
Clock check circuit
GTE AUTOMATIC ELECTRIC LAB INC22 citations81
US4007338AFeb 8, 1977
Switching and transmission technique using a method and arrangement of channel allocation for providing conferencing
GTE AUTOMATIC ELECTRIC LAB INC17 citations73
US4022981AMay 10, 1977
Conference circuit for pulse coded modulated telephony
GTE AUTOMATIC ELECTRIC LAB INC11 citations72
US3931474AJan 6, 1976
Tone injection circuit
GTE AUTOMATIC ELECTRIC LAB INC7 citations72
US4274155AJun 16, 1981
Multiport conference circuit with multi-frame summing and voice level coding
GTE AUTOMATIC ELECTRIC LAB INC20 citations70
US4257120AMar 17, 1981
Multiport conference circuit with multi-frame summing
GTE AUTOMATIC ELECTRIC LAB INC10 citations70
US4191857AMar 4, 1980
Digital trunk supervisory decoder multiplexor for ground start or E&M signalling on a common T1 span
GTE AUTOMATIC ELECTRIC LAB INC8 citations69
US4175215ANov 20, 1979
Multiport conference circuit
GTE AUTOMATIC ELECTRIC LAB INC13 citations69
US4126766ANov 21, 1978
3-Port conference circuit for use in private automatic branch exchange
GTE AUTOMATIC ELECTRIC LAB INC12 citations69
US4054755AOct 18, 1977
Conference circuit for pulse coded modulated telephony
GTE AUTOMATIC ELECTRIC LAB INC16 citations69
US4201893AMay 6, 1980
Private automatic branch exchange telephone system with two data sources sharing a multiplexed data bus
GTE AUTOMATIC ELECTRIC LAB INC5 citations62
US4402077AAug 30, 1983
Dual rail time and control unit for a duplex T-S-T-digital switching system
GTE AUTOMATIC ELECTRIC LAB INC4 citations60
US4399369AAug 16, 1983
Dual rail time and control unit for a duplex T-S-T-digital switching system
GTE AUTOMATIC ELECTRIC LAB INC4 citations60
US4399534AAug 16, 1983
Dual rail time and control unit for a duplex T-S-T-digital switching system
GTE AUTOMATIC ELECTRIC LAB INC5 citations60
US4254497AMar 3, 1981
Multiport conference circuit with voice level coding
GTE AUTOMATIC ELECTRIC LAB INC6 citations59
US4406005ASep 20, 1983
Dual rail time control unit for a T-S-T-digital switching system
GTE AUTOMATIC ELECTRIC LAB INC4 citations57
US4201894AMay 6, 1980
Arrangement for conversion of random to fixed data channel format
GTE AUTOMATIC ELECTRIC LAB INC1 citations51
US4392223AJul 5, 1983
Dual rail time and control unit for a T-S-T-digital switching system
GTE AUTOMATIC ELECTRIC LAB INC1 citations50
US4399533AAug 16, 1983
Dual rail time and control unit for a T-S-T-digital switching system
GTE AUTOMATIC ELECTRIC LAB INC0 citations39