Assignee
ADTRAN
US17 patents
Top patents by PatentIndex Score
US5579316ANov 26, 1996
Communications technique for transmitting limited size digital data frames using macro headers to represent multiple header code patterns associated with encapsulation protocols and signal processing operations to which transmitted data are subjected
ADTRAN69 citations96
US5561687AOct 1, 1996
Decision feedback equalizer employing fixed ratio postcursor taps for minimizing noise and intersymbol interference in signals conveyed over high speed data service loop
ADTRAN97 citations96
US5414733AMay 9, 1995
Decision feedback equalizer employing fixed ratio postcursor taps for minimizing noise and intersymbol interference in signals conveyed over high speed data service loop
ADTRAN82 citations96
US5526377AJun 11, 1996
Transversal filter useable in echo canceler, decision feedback equalizer applications for minimizing non-linear distortion in signals conveyed over full duplex two-wire communication link
ADTRAN26 citations92
US5500879AMar 19, 1996
Blind signal separation and equalization of full-duplex amplitude modulated signals on a signal transmission line
ADTRAN26 citations92
US5396517AMar 7, 1995
Transversal filter useable in echo canceler, decision feedback equalizer applications for minimizing non-linear distortion in signals conveyed over full duplex two-wire communication link
ADTRAN32 citations92
US5040190AAug 13, 1991
Analog data station terminal
ADTRAN50 citations91
US4759035AJul 19, 1988
Digitally controlled, all rate equalizer
ADTRAN27 citations91
US5473665ADec 5, 1995
Performance monitoring of DS0 channel via D4 channel bank
ADTRAN26 citations90
US5144625ASep 1, 1992
Digital subscriber line termination with signalling
ADTRAN23 citations90
US5539785AJul 23, 1996
Jitter/wander reduction circuit for pulse-stuffed, synchronized digital communications
ADTRAN16 citations74
US5515371AMay 7, 1996
Timeslot interleaving delay compensation (bonding) mechanism for time division multiplexed digital communication network
ADTRAN16 citations73
US5680422AOct 21, 1997
Method and apparatus for reducing waiting time jitter in pulse stuffing synchronized digital communications
ADTRAN16 citations72
US5574723ANov 12, 1996
Remote provisioning of telephone channel unit using inband digital code sequences transmitted over tandem link
ADTRAN13 citations70
US5390179AFeb 14, 1995
Remote provisioning of telephone channel unit using inband digital code sequences transmitted over tandem link
ADTRAN15 citations70
US5450441ASep 12, 1995
Mechanism for monitoring quality of digital telephone link based upon rate of occurrence of illegal bipolar violations
ADTRAN5 citations57
US5479439ADec 26, 1995
Analog service channel port for digital interface
ADTRAN5 citations46