Assignee
COMSAT CORP
US81 patents
Top patents by PatentIndex Score
US6963570B1Nov 8, 2005
Method and apparatus for adaptive loss-less compression of cell/packet headers
COMSAT CORP140 citations98
US5640416AJun 17, 1997
Digital downconverter/despreader for direct sequence spread spectrum communications system
COMSAT CORP201 citations98
US5375146ADec 20, 1994
Digital frequency conversion and tuning scheme for microwave radio receivers and transmitters
COMSAT CORP324 citations98
US6477669B1Nov 5, 2002
Method and apparatus for adaptive control of forward error correction codes
COMSAT CORP153 citations97
US6141372AOct 31, 2000
Digital downconverter/despreader for direct sequence spread spectrum CDMA communications system
COMSAT CORP77 citations96
US6052364AApr 18, 2000
CDMA system architecture for satcom terminals
COMSAT CORP141 citations96
US5394439AFeb 28, 1995
Bisdn compatible modem codec for digital information communication system
COMSAT CORP85 citations95
US6819658B1Nov 16, 2004
Method and apparatus for segmentation, reassembly and inverse multiplexing of packets and ATM cells over satellite/wireless networks
COMSAT CORP109 citations93
US6269333B1Jul 31, 2001
Codebook population using centroid pairs
COMSAT CORP21 citations93
US6134520AOct 17, 2000
Split vector quantization using unequal subvectors
COMSAT CORP32 citations93
US6067452AMay 23, 2000
Technique for least cost routing for mobile satellite systems employing a GSM network infrastructure
COMSAT CORP64 citations93
US7680653B2Mar 16, 2010
Background noise reduction in sinusoidal based speech coding systems
COMSAT CORP41 citations92
US7289063B2Oct 30, 2007
LTCC-based modular MEMS phased array
COMSAT CORP28 citations92
US6377914B1Apr 23, 2002
Efficient quantization of speech spectral amplitudes based on optimal interpolation technique
COMSAT CORP20 citations92
US6253171B1Jun 26, 2001
Method of determining the voicing probability of speech signals
COMSAT CORP20 citations92
US6006293ADec 21, 1999
Method and apparatus for zero overhead sharing for registered digital hardware
COMSAT CORP21 citations92
US5999897ADec 7, 1999
Method and apparatus for pitch estimation using perception based analysis by synthesis
COMSAT CORP44 citations92
US5600653AFeb 4, 1997
Technique for improving asynchronous transfer mode operation over a communications link with bursty bit errors
COMSAT CORP96 citations92
US5568473AOct 22, 1996
Method and apparatus for simple and efficient interference cancellation for chip synchronized CDMA
COMSAT CORP46 citations92
US5293449AMar 8, 1994
Analysis-by-synthesis 2,4 kbps linear predictive speech codec
COMSAT CORP225 citations92
US6810377B1Oct 26, 2004
Lost frame recovery techniques for parametric, LPC-based speech coding systems
COMSAT CORP86 citations91
US6711140B1Mar 23, 2004
Method and apparatus for fast acquisition and synchronization of transmission frames
COMSAT CORP26 citations91
US5481561AJan 2, 1996
Fully meshed CDMA network for personal communications terminals
COMSAT CORP96 citations91
US6661781B1Dec 9, 2003
Multicarrier demux/demod (MCDD) wireless network architecture
COMSAT CORP35 citations90
US6154499ANov 28, 2000
Communication systems using nested coder and compatible channel coding
COMSAT CORP75 citations90
US6084541AJul 4, 2000
Self diagnosis and self healing scheme for digital beam-forming
COMSAT CORP33 citations90
US5533052AJul 2, 1996
Adaptive predictive coding with transform domain quantization based on block size adaptation, backward adaptive power gain control, split bit-allocation and zero input response compensation
COMSAT CORP87 citations90
US5513128AApr 30, 1996
Multispectral data compression using inter-band prediction
COMSAT CORP43 citations90
US5488653AJan 30, 1996
Facsimile interface unit (FIU) enhanced capabilities negotiation
COMSAT CORP27 citations90
US5453799ASep 26, 1995
Unified motion estimation architecture
COMSAT CORP105 citations90
US5404394AApr 4, 1995
Secure communication system
COMSAT CORP29 citations90
US6790243B2Sep 14, 2004
Lithium-ion cell and method for activation thereof
COMSAT CORP20 citations89
US6560303B1May 6, 2003
Joint frame, carrier and clock synchronization scheme
COMSAT CORP58 citations89
US5963621AOct 5, 1999
Secure communication system
COMSAT CORP35 citations89
US5889821AMar 30, 1999
Low noise front-end blanking and interleaving for satellite reception in pulsed interference environments
COMSAT CORP83 citations89
US5724414AMar 3, 1998
Secure communication system
COMSAT CORP18 citations89
US5475394ADec 12, 1995
Waveguide transition for flat plate antenna
COMSAT CORP52 citations89
US5307441AApr 26, 1994
Wear-toll quality 4.8 kbps speech codec
COMSAT CORP172 citations89
US5696796ADec 9, 1997
Continuously variable if sampling method for digital data transmission
COMSAT CORP70 citations88
US5487086AJan 23, 1996
Transform vector quantization for adaptive predictive coding
COMSAT CORP107 citations88
US5337085AAug 9, 1994
Coding technique for high definition television signals
COMSAT CORP33 citations88
US6859442B1Feb 22, 2005
Method and system for transport of frame relay traffic over satellite/wireless networks
COMSAT CORP36 citations87
US6459898B1Oct 1, 2002
Information traffic and performance monitoring for multi-beam satellites with on-board switching
COMSAT CORP20 citations87
US5742900AApr 21, 1998
Voltage-variable biased inverting limiter for RFI suppression overview
COMSAT CORP19 citations87
US6008769ADec 28, 1999
Alignment control device
COMSAT CORP20 citations86
US5572530ANov 5, 1996
Technique for efficient integration of integrated services digital network (ISDN) into satellite system
COMSAT CORP36 citations86
US7366134B2Apr 29, 2008
Dynamic allocation of network resources in a multiple-user communication system
COMSAT CORP34 citations84
US6181825B1Jan 30, 2001
Methods for performing 2-dimensional maximum differences coding and decoding during real-time facsimile image compression and apparatus therefor
COMSAT CORP22 citations84
US5946602AAug 31, 1999
Reduction of queuing delays by multiple subgroup assignments
COMSAT CORP18 citations82
US5841796ANov 24, 1998
Apparatus and method for calculating viterbi path metric using exponentially-weighted moving average
COMSAT CORP17 citations81
Showing the top 50 of 81 patents by PatentIndex Score.