Assignee
COMSAT CORP
US·81 granted patents·1 pending application·3,679 citations·filing 1989–2007
Top patents by PatentIndex Score
82 records- 0197US5375146ADigital frequency conversion and tuning scheme for microwave radio receivers and transmittersCOMSAT CORP·Filed 1993·Granted Dec 20, 1994·324 cites·19 claims
- 0295US5640416ADigital downconverter/despreader for direct sequence spread spectrum communications systemCOMSAT CORP·Filed 1995·Granted Jun 17, 1997·201 cites·13 claims
- 0393US7680653B2Background noise reduction in sinusoidal based speech coding systemsCOMSAT CORP·Filed 2007·Granted Mar 16, 2010·41 cites·16 claims
- 0492US6477669B1Method and apparatus for adaptive control of forward error correction codesCOMSAT CORP·Filed 1998·Granted Nov 5, 2002·153 cites·20 claims
- 0591US5481561AFully meshed CDMA network for personal communications terminalsCOMSAT CORP·Filed 1993·Granted Jan 2, 1996·96 cites·14 claims
- 0690US6819658B1Method and apparatus for segmentation, reassembly and inverse multiplexing of packets and ATM cells over satellite/wireless networksCOMSAT CORP·Filed 1998·Granted Nov 16, 2004·109 cites·5 claims
- 0790US6052364ACDMA system architecture for satcom terminalsCOMSAT CORP·Filed 1997·Granted Apr 18, 2000·141 cites·20 claims
- 0888US6963570B1Method and apparatus for adaptive loss-less compression of cell/packet headersCOMSAT CORP·Filed 1998·Granted Nov 8, 2005·140 cites·18 claims
- 0987US5293449AAnalysis-by-synthesis 2,4 kbps linear predictive speech codecCOMSAT CORP·Filed 1992·Granted Mar 8, 1994·225 cites·9 claims
- 1086US5307441AWear-toll quality 4.8 kbps speech codecCOMSAT CORP·Filed 1989·Granted Apr 26, 1994·172 cites·42 claims
- 1185US5453799AUnified motion estimation architectureCOMSAT CORP·Filed 1993·Granted Sep 26, 1995·105 cites·6 claims
- 1284US7289063B2LTCC-based modular MEMS phased arrayCOMSAT CORP·Filed 2002·Granted Oct 30, 2007·28 cites·25 claims
- 1384US6141372ADigital downconverter/despreader for direct sequence spread spectrum CDMA communications systemCOMSAT CORP·Filed 1996·Granted Oct 31, 2000·77 cites·8 claims
- 1484US5696796AContinuously variable if sampling method for digital data transmissionCOMSAT CORP·Filed 1995·Granted Dec 9, 1997·70 cites·6 claims
- 1583US6560303B1Joint frame, carrier and clock synchronization schemeCOMSAT CORP·Filed 2000·Granted May 6, 2003·58 cites·30 claims
- 1680US5889821ALow noise front-end blanking and interleaving for satellite reception in pulsed interference environmentsCOMSAT CORP·Filed 1997·Granted Mar 30, 1999·83 cites·12 claims
- 1778US6067452ATechnique for least cost routing for mobile satellite systems employing a GSM network infrastructureCOMSAT CORP·Filed 1996·Granted May 23, 2000·64 cites·12 claims
- 1877US5600653ATechnique for improving asynchronous transfer mode operation over a communications link with bursty bit errorsCOMSAT CORP·Filed 1994·Granted Feb 4, 1997·96 cites·21 claims
- 1977US5513128AMultispectral data compression using inter-band predictionCOMSAT CORP·Filed 1993·Granted Apr 30, 1996·43 cites·10 claims
- 2077US5394439ABisdn compatible modem codec for digital information communication systemCOMSAT CORP·Filed 1991·Granted Feb 28, 1995·85 cites·3 claims
- 2176US7366134B2Dynamic allocation of network resources in a multiple-user communication systemCOMSAT CORP·Filed 2001·Granted Apr 29, 2008·34 cites·8 claims
- 2276US6790243B2Lithium-ion cell and method for activation thereofCOMSAT CORP·Filed 2001·Granted Sep 14, 2004·20 cites·17 claims
- 2376US5475394AWaveguide transition for flat plate antennaCOMSAT CORP·Filed 1994·Granted Dec 12, 1995·52 cites·11 claims
- 2475US6269333B1Codebook population using centroid pairsCOMSAT CORP·Filed 2000·Granted Jul 31, 2001·21 cites·1 claims
- 2574US5533052AAdaptive predictive coding with transform domain quantization based on block size adaptation, backward adaptive power gain control, split bit-allocation and zero input response compensationCOMSAT CORP·Filed 1993·Granted Jul 2, 1996·87 cites·21 claims
- 2673US5487086ATransform vector quantization for adaptive predictive codingCOMSAT CORP·Filed 1991·Granted Jan 23, 1996·107 cites·5 claims
- 2772US6810377B1Lost frame recovery techniques for parametric, LPC-based speech coding systemsCOMSAT CORP·Filed 1998·Granted Oct 26, 2004·86 cites·4 claims
- 2872US5963621ASecure communication systemCOMSAT CORP·Filed 1996·Granted Oct 5, 1999·35 cites·68 claims
- 2971US5568473AMethod and apparatus for simple and efficient interference cancellation for chip synchronized CDMACOMSAT CORP·Filed 1994·Granted Oct 22, 1996·46 cites·10 claims
- 3068US6711140B1Method and apparatus for fast acquisition and synchronization of transmission framesCOMSAT CORP·Filed 1998·Granted Mar 23, 2004·26 cites·9 claims
- 3168US5488653AFacsimile interface unit (FIU) enhanced capabilities negotiationCOMSAT CORP·Filed 1992·Granted Jan 30, 1996·27 cites·9 claims
- 3268US5337085ACoding technique for high definition television signalsCOMSAT CORP·Filed 1992·Granted Aug 9, 1994·33 cites·16 claims
- 3366US5815506AMethod for providing an overlay short messaging service in a mobile satellite communication systemCOMSAT CORP·Filed 1996·Granted Sep 29, 1998·38 cites·20 claims
- 3465US6859442B1Method and system for transport of frame relay traffic over satellite/wireless networksCOMSAT CORP·Filed 1998·Granted Feb 22, 2005·36 cites·46 claims
- 3565US6154499ACommunication systems using nested coder and compatible channel codingCOMSAT CORP·Filed 1996·Granted Nov 28, 2000·75 cites·22 claims
- 3664US6084541ASelf diagnosis and self healing scheme for digital beam-formingCOMSAT CORP·Filed 1998·Granted Jul 4, 2000·33 cites·11 claims
- 3762US5999897AMethod and apparatus for pitch estimation using perception based analysis by synthesisCOMSAT CORP·Filed 1997·Granted Dec 7, 1999·44 cites·8 claims
- 3862US5572530ATechnique for efficient integration of integrated services digital network (ISDN) into satellite systemCOMSAT CORP·Filed 1994·Granted Nov 5, 1996·36 cites·11 claims
- 3960US6181825B1Methods for performing 2-dimensional maximum differences coding and decoding during real-time facsimile image compression and apparatus thereforCOMSAT CORP·Filed 1994·Granted Jan 30, 2001·22 cites·22 claims
- 4060US5404394ASecure communication systemCOMSAT CORP·Filed 1993·Granted Apr 4, 1995·29 cites·7 claims
- 4158US6842615B2Least cost routing for mobile satellite systems employing a GPRS network infrastructureCOMSAT CORP·Filed 2001·Granted Jan 11, 2005·16 cites·17 claims
- 4257US6134520ASplit vector quantization using unequal subvectorsCOMSAT CORP·Filed 1995·Granted Oct 17, 2000·32 cites·12 claims
- 4355US7246143B2Traced fast fourier transform apparatus and methodCOMSAT CORP·Filed 2001·Granted Jul 17, 2007·6 cites·10 claims
- 4455US6661781B1Multicarrier demux/demod (MCDD) wireless network architectureCOMSAT CORP·Filed 1998·Granted Dec 9, 2003·35 cites·54 claims
- 4554US6337610B1Asymmetric response bandpass filter having resonators with minimum couplingsCOMSAT CORP·Filed 1999·Granted Jan 8, 2002·13 cites·15 claims
- 4653US6377920B2Method of determining the voicing probability of speech signalsCOMSAT CORP·Filed 2001·Granted Apr 23, 2002·3 cites·3 claims
- 4752US6008769AAlignment control deviceCOMSAT CORP·Filed 1993·Granted Dec 28, 1999·20 cites·7 claims
- 4851US5841796AApparatus and method for calculating viterbi path metric using exponentially-weighted moving averageCOMSAT CORP·Filed 1995·Granted Nov 24, 1998·17 cites·23 claims
- 4951US5724414ASecure communication systemCOMSAT CORP·Filed 1994·Granted Mar 3, 1998·18 cites·5 claims
- 5050US5946602AReduction of queuing delays by multiple subgroup assignmentsCOMSAT CORP·Filed 1996·Granted Aug 31, 1999·18 cites·4 claims
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