Assignee
CODEX CORP
US120 patents
Top patents by PatentIndex Score
US5297186AMar 22, 1994
Device and method for on-line adaptive selection of baud rate and carrier frequency
CODEX CORP172 citations99
US5249200ASep 28, 1993
Device and method for combining precoding with symbol-rate spectral shaping
CODEX CORP186 citations99
US5115429AMay 19, 1992
Dynamic encoding rate control minimizes traffic congestion in a packet network
CODEX CORP330 citations99
US5426640AJun 20, 1995
Rate-based adaptive congestion control system and method for integrated packet networks
CODEX CORP150 citations98
US5268900ADec 7, 1993
Device and method for implementing queueing disciplines at high speeds
CODEX CORP240 citations98
US5231633AJul 27, 1993
Method for prioritizing, selectively discarding, and multiplexing differing traffic type fast packets
CODEX CORP489 citations98
US5048054ASep 10, 1991
Line probing modem
CODEX CORP171 citations98
US4987536AJan 22, 1991
Communication system for sending an identical routing tree to all connected nodes to establish a shortest route and transmitting messages thereafter
CODEX CORP145 citations98
US4096571AJun 20, 1978
System for resolving memory access conflicts among processors and minimizing processor waiting times for access to memory by comparing waiting times and breaking ties by an arbitrary priority ranking
CODEX CORP168 citations98
US5402478AMar 28, 1995
System and method for call-by-call source routing with rule-based fallbacks
CODEX CORP118 citations97
US5297170AMar 22, 1994
Lattice and trellis-coded quantization
CODEX CORP297 citations97
US5260979ANov 9, 1993
Circuit and method of switching between redundant clocks for a phase lock loop
CODEX CORP150 citations97
US5195168AMar 16, 1993
Speech coder and method having spectral interpolation and fast codebook search
CODEX CORP154 citations97
US5281927AJan 25, 1994
Circuit and method of controlling a VCO with capacitive loads
CODEX CORP72 citations96
US5278520AJan 11, 1994
Phase lock detection in a phase lock loop
CODEX CORP90 citations96
US5263051ANov 16, 1993
Device and method of interleaving for a trellis precoding system
CODEX CORP89 citations96
US5130993AJul 14, 1992
Transmitting encoded data on unreliable networks
CODEX CORP69 citations96
US4987569AJan 22, 1991
Fast training echo canceller
CODEX CORP54 citations96
US4713817ADec 15, 1987
Multidimensional, convolutionally coded communication systems
CODEX CORP109 citations96
US5159610AOct 27, 1992
Trellis precoding for modulation systems
CODEX CORP56 citations95
US5150381ASep 22, 1992
Trellis shaping for modulation systems
CODEX CORP101 citations95
US4933956AJun 12, 1990
Simplified decoding of lattices and codes
CODEX CORP91 citations95
US4931250AJun 5, 1990
Multimode modem
CODEX CORP119 citations95
US4833693AMay 23, 1989
Coded modulation system using interleaving for decision-feedback equalization
CODEX CORP117 citations95
US4756007AJul 5, 1988
Adaptive communication rate modem
CODEX CORP261 citations95
US4631735ADec 23, 1986
Coded modulation system with feedback
CODEX CORP100 citations95
US4597090AJun 24, 1986
Block coded modulation system
CODEX CORP109 citations95
US4004226AJan 18, 1977
QAM receiver having automatic adaptive equalizer
CODEX CORP95 citations95
US5347539ASep 13, 1994
High speed two wire modem
CODEX CORP55 citations94
US5051981ASep 24, 1991
Digital filtering
CODEX CORP60 citations94
US4597053AJun 24, 1986
Two-pass multiplier/accumulator circuit
CODEX CORP98 citations94
US4586182AApr 29, 1986
Source coded modulation system
CODEX CORP57 citations94
US5319636AJun 7, 1994
Device and method for linear listener echo cancellation
CODEX CORP21 citations93
US5199046AMar 30, 1993
First and second digital rate converter synchronization device and method
CODEX CORP26 citations93
US4813073AMar 14, 1989
Echo cancellation
CODEX CORP28 citations93
US4641327AFeb 3, 1987
Frame synchronization in trellis-coded communication systems
CODEX CORP47 citations93
US5359234AOct 25, 1994
Circuit and method of sensing process and temperature variation in an integrated circuit
CODEX CORP33 citations92
US5285114AFeb 8, 1994
Phase lock loop charge pump with symmetrical charge and discharge currents
CODEX CORP27 citations92
US5278522AJan 11, 1994
High frequency voltage controlled oscillator
CODEX CORP20 citations92
US5267249ANov 30, 1993
Device and method for asynchronous cyclic redundancy checking for digital receivers
CODEX CORP44 citations92
US5253326AOct 12, 1993
Prioritization method and device for speech frames coded by a linear predictive coder
CODEX CORP24 citations92
US5245614ASep 14, 1993
Vocabulary memory allocation for adaptive data compression of frame-multiplexed traffic
CODEX CORP23 citations92
US5212412AMay 18, 1993
Power on reset circuit having hysteresis inverters
CODEX CORP26 citations92
US5081428AJan 14, 1992
Voltage controlled oscillator having 50% duty cycle clock
CODEX CORP23 citations92
US4989221AJan 29, 1991
Sample rate converter
CODEX CORP49 citations92
US4918623AApr 17, 1990
Testing the performance of a communication line between two modems using modem processor
CODEX CORP242 citations92
US4713829ADec 15, 1987
Coded modulation system with a simplified decoder capable of reducing the effects of channel distortion
CODEX CORP43 citations92
US4562426ADec 31, 1985
Symbol coding apparatus
CODEX CORP30 citations92
US4455661AJun 19, 1984
Dual processor digital modem apparatus
CODEX CORP35 citations92
US4358853ANov 9, 1982
Digital modem transmitter
CODEX CORP46 citations92
Showing the top 50 of 120 patents by PatentIndex Score.