Assignee
CODEX CORP
US·120 granted patents·1 pending application·7,396 citations·filing 1975–2024
Top patents by PatentIndex Score
121 records- 0197US5297170ALattice and trellis-coded quantizationCODEX CORP·Filed 1990·Granted Mar 22, 1994·297 cites·65 claims
- 0296US5260979ACircuit and method of switching between redundant clocks for a phase lock loopCODEX CORP·Filed 1991·Granted Nov 9, 1993·150 cites·18 claims
- 0396US5231633AMethod for prioritizing, selectively discarding, and multiplexing differing traffic type fast packetsCODEX CORP·Filed 1990·Granted Jul 27, 1993·489 cites·31 claims
- 0496US5115429ADynamic encoding rate control minimizes traffic congestion in a packet networkCODEX CORP·Filed 1990·Granted May 19, 1992·330 cites·12 claims
- 0596US4096571ASystem 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 rankingCODEX CORP·Filed 1976·Granted Jun 20, 1978·168 cites·32 claims
- 0695US4756007AAdaptive communication rate modemCODEX CORP·Filed 1984·Granted Jul 5, 1988·261 cites·28 claims
- 0794US5048054ALine probing modemCODEX CORP·Filed 1989·Granted Sep 10, 1991·171 cites·71 claims
- 0893US4987536ACommunication system for sending an identical routing tree to all connected nodes to establish a shortest route and transmitting messages thereafterCODEX CORP·Filed 1988·Granted Jan 22, 1991·145 cites·15 claims
- 0993US4004226AQAM receiver having automatic adaptive equalizerCODEX CORP·Filed 1975·Granted Jan 18, 1977·95 cites·11 claims
- 1092US5281927ACircuit and method of controlling a VCO with capacitive loadsCODEX CORP·Filed 1993·Granted Jan 25, 1994·72 cites·17 claims
- 1192US4933956ASimplified decoding of lattices and codesCODEX CORP·Filed 1986·Granted Jun 12, 1990·91 cites·83 claims
- 1292US4631735ACoded modulation system with feedbackCODEX CORP·Filed 1984·Granted Dec 23, 1986·100 cites·15 claims
- 1392US4597090ABlock coded modulation systemCODEX CORP·Filed 1983·Granted Jun 24, 1986·109 cites·66 claims
- 1491US5268900ADevice and method for implementing queueing disciplines at high speedsCODEX CORP·Filed 1991·Granted Dec 7, 1993·240 cites·70 claims
- 1591US4931250AMultimode modemCODEX CORP·Filed 1988·Granted Jun 5, 1990·119 cites·16 claims
- 1691US4918623ATesting the performance of a communication line between two modems using modem processorCODEX CORP·Filed 1988·Granted Apr 17, 1990·242 cites·21 claims
- 1791US4833693ACoded modulation system using interleaving for decision-feedback equalizationCODEX CORP·Filed 1985·Granted May 23, 1989·117 cites·11 claims
- 1890US9396447B2Systems and methods for monitoring a headcountCODEX CORP·Filed 2013·Granted Jul 19, 2016·25 cites·13 claims
- 1990US5278520APhase lock detection in a phase lock loopCODEX CORP·Filed 1992·Granted Jan 11, 1994·90 cites·15 claims
- 2090US5051981ADigital filteringCODEX CORP·Filed 1990·Granted Sep 24, 1991·60 cites·16 claims
- 2189US5402478ASystem and method for call-by-call source routing with rule-based fallbacksCODEX CORP·Filed 1992·Granted Mar 28, 1995·118 cites·42 claims
- 2289US5249200ADevice and method for combining precoding with symbol-rate spectral shapingCODEX CORP·Filed 1991·Granted Sep 28, 1993·186 cites·22 claims
- 2389US5150381ATrellis shaping for modulation systemsCODEX CORP·Filed 1989·Granted Sep 22, 1992·101 cites·75 claims
- 2489US4713817AMultidimensional, convolutionally coded communication systemsCODEX CORP·Filed 1985·Granted Dec 15, 1987·109 cites·82 claims
- 2589US3978407AFast start-up adaptive equalizer communication system using two data transmission ratesCODEX CORP·Filed 1975·Granted Aug 31, 1976·76 cites·10 claims
- 2688US5297186ADevice and method for on-line adaptive selection of baud rate and carrier frequencyCODEX CORP·Filed 1991·Granted Mar 22, 1994·172 cites·42 claims
- 2788US4984240ADistributed switching architecture for communication module redundancyCODEX CORP·Filed 1988·Granted Jan 8, 1991·144 cites·21 claims
- 2887US5426640ARate-based adaptive congestion control system and method for integrated packet networksCODEX CORP·Filed 1992·Granted Jun 20, 1995·150 cites·30 claims
- 2987US4597053ATwo-pass multiplier/accumulator circuitCODEX CORP·Filed 1983·Granted Jun 24, 1986·98 cites·9 claims
- 3086US5195168ASpeech coder and method having spectral interpolation and fast codebook searchCODEX CORP·Filed 1991·Granted Mar 16, 1993·154 cites·75 claims
- 3186US4641327AFrame synchronization in trellis-coded communication systemsCODEX CORP·Filed 1985·Granted Feb 3, 1987·47 cites·13 claims
- 3286US4560976AData compressionCODEX CORP·Filed 1984·Granted Dec 24, 1985·38 cites·3 claims
- 3384US5025457ASynchronizing continuous bit stream oriented terminals in a communications networkCODEX CORP·Filed 1989·Granted Jun 18, 1991·59 cites·36 claims
- 3484US4611133AHigh speed fully precharged programmable logic arrayCODEX CORP·Filed 1983·Granted Sep 9, 1986·27 cites·4 claims
- 3583US5130993ATransmitting encoded data on unreliable networksCODEX CORP·Filed 1989·Granted Jul 14, 1992·69 cites·21 claims
- 3683US5007047AAdaptive rate control for echo cancelling modemCODEX CORP·Filed 1988·Granted Apr 9, 1991·90 cites·25 claims
- 3783US4586182ASource coded modulation systemCODEX CORP·Filed 1984·Granted Apr 29, 1986·57 cites·27 claims
- 3882US4987569AFast training echo cancellerCODEX CORP·Filed 1989·Granted Jan 22, 1991·54 cites·42 claims
- 3981US4563657AFrequency synthesizer and digital phase lock loopCODEX CORP·Filed 1982·Granted Jan 7, 1986·39 cites·8 claims
- 4080US4358853ADigital modem transmitterCODEX CORP·Filed 1981·Granted Nov 9, 1982·46 cites·21 claims
- 4179US5467319ACAM array and method of laying out the sameCODEX CORP·Filed 1995·Granted Nov 14, 1995·47 cites·14 claims
- 4279US5359234ACircuit and method of sensing process and temperature variation in an integrated circuitCODEX CORP·Filed 1993·Granted Oct 25, 1994·33 cites·15 claims
- 4379US4967344AInterconnection network for multiple processorsCODEX CORP·Filed 1988·Granted Oct 30, 1990·91 cites·24 claims
- 4478US5267249ADevice and method for asynchronous cyclic redundancy checking for digital receiversCODEX CORP·Filed 1991·Granted Nov 30, 1993·44 cites·23 claims
- 4578US5263051ADevice and method of interleaving for a trellis precoding systemCODEX CORP·Filed 1991·Granted Nov 16, 1993·89 cites·35 claims
- 4677US4989221ASample rate converterCODEX CORP·Filed 1989·Granted Jan 29, 1991·49 cites·24 claims
- 4777US4160877AMultiplexing of bytes of non-uniform length with end of time slot indicatorCODEX CORP·Filed 1977·Granted Jul 10, 1979·24 cites·16 claims
- 4876USD321343SModem for digital communicationsCODEX CORP·Filed 1989·Granted Nov 5, 1991·15 cites·1 claims
- 4976US4562423AData compressionCODEX CORP·Filed 1984·Granted Dec 31, 1985·23 cites·8 claims
- 5075US5210530ANetwork management interface with internal dsdCODEX CORP·Filed 1991·Granted May 11, 1993·114 cites·12 claims
Showing the top 50 of 121 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when CODEX CORP files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →