US Patent No: 7,957,265

Number of patents in Portfolio can not be more than 2000

Systems and method for orthogonal frequency divisional multiplexing

ALSO PUBLISHED AS: 20080049604

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Systems and methods for orthogonal frequency division multiplexing are provided. In one embodiment, a multi-carrier modem comprising: a receiver configured to de-modulate symbols from at least one of a plurality of spectrally overlapping carrier signals; a transmitter configured to modulate symbols onto at least one of a plurality of the spectrally overlapping carrier signals; a processor coupled to the transmitter, wherein the processor outputs data for transmission by the transmitter, wherein the processor applies an inverse Fourier transform to the data transmitted by the transmitter; and a controller programmed to instruct the transmitter to transmit a coarse timing adjustment followed by at least one secondary timing adjustment, wherein the secondary timing adjustment is a fine tuning adjustment with respect to the coarse timing adjustment.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
HTC CORPORATIONTAOYUAN COUNTY1124

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Brede, Jeffrey Eden Prairie, MN 123 2854
Geile, Michael J Loveland, OH 207 4823

Cited Art Landscape

Patent Info (Count) # Cites Year
 
HTC CORPORATION (125)
6,334,219 Channel selection for a hybrid fiber coax network 103 1996
6,292,651 Communication system with multicarrier transport distribution network between a head end terminal and remote units 60 1997
6,418,558 Hybrid fiber/coax video and telephony communication 90 1997
6,275,990 Transport of payload information and control messages on multiple orthogonal carriers spread throughout substantially all of a frequency bandwith 154 1999
6,279,158 Dynamic bandwidth allocation 91 1999
6,282,683 Communication system with multicarrier telephony transport 45 1999
6,330,241 Multi-point to point communication system with remote unit burst identification 79 1999
6,336,201 Synchronization in a communications system with multicarrier telephony transport 70 1999
6,366,585 Distributed control in a communication system 76 1999
6,434,583 Fast fourier transform apparatus and method 60 1999
6,477,354 Communication system transmitting modulated orthogonal carries with service units that scan spectrum to identify assigned band 43 1999
6,487,405 Communication system with multicarrier telephony transport for controlling a plurality of service units 47 1999
6,535,715 Hybrid/fiber coax video and telephony communication system with poly-phase filtering 57 1999
6,594,322 Method of distributed loop control for a multicarrier telephony transport 63 1999
6,603,822 Communicating errors in a telecommunications system 53 1999
6,606,351 Ingress protection in a communication system with orthogonal carriers 43 1999
6,415,133 Acquisition and tracking in communication system with multicarrier telephony transport 67 1999
6,467,092 Method for adjusting power in a communication system with multicarrier telephony transport 91 1999
6,510,229 Communication system with multicarrier telephony transport 42 1999
2002/0098,797 ACQUISITION AND TRACKING IN COMMUNICATION SYSTEM WITH MULTICARRIER TELEPHONY TRANSPORT 34 1999
2002/0098,798 COMMUNICATION SYSTEM WITH MULTICARRIER TELEPHONY TRANSPORT 33 1999
7,002,898 Asymmetrical transport of data 64 2000
7,123,592 Dynamic allocation of transmission bandwidth in a communication system 33 2001
7,069,577 Dynamic bandwidth allocation 83 2001
6,608,835 Communication system with multicarrier telephony transport 48 2002
6,662,367 Poly-phase filters in multicarrier communication systems 49 2002
7,310,522 Systems for synchronous multipoint-to-point orthogonal frequency division multiplexing communication 50 2002
2002/0105,950 Computer data transmission over a telecommunications network 38 2002
2002/0107,979 Computer data transmission over a telecommunictions network 36 2002
2004/0042,387 Communication system with multicarrier telephony transport 61 2002
2003/0032,390 Acquisition and tracking in communication system with multicarrier telephony transport 39 2002
2007/0183,591 DYNAMIC BANDWIDTH ALLOCATION 41 2006
2007/0116,209 MULTIPOINT-TO-POINT COMMUNICATION USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING 34 2007
2007/0115,803 MULTIPOINT-TO-POINT COMMUNICATION USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING 28 2007
2007/0157,277 MULTIPOINT-TO-POINT COMMUNICATION USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING 28 2007
2007/0162,943 MULTIPOINT-TO-POINT COMMUNICATION USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING 28 2007
2007/0157,278 CONTENTION-BASED ACCESS TO TONES IN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) WAVEFORM 30 2007
2007/0110,096 CONTENTION-BASED ACCESS TO TONES IN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) WAVEFORM 38 2007
2007/0217,324 DISTRIBUTED CONTROL IN SYNCHRONIZING REMOTE UNITS TO HOST UNIT 28 2007
2007/0201,345 DISTRIBUTED CONTROL OF CARRIER FREQUENCY IN MULTIPOINT-TO-POINT ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING COMMUNICATION 28 2007
2007/0217,325 DISTRIBUTED CONTROL IN SYNCHRONIZING REMOTE UNITS TO HOST UNIT 28 2007
2007/0110,220 DISTRIBUTED CONTROL OF CARRIER FREQUENCY IN MULTIPOINT-TO-POINT ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING COMMUNICATION 28 2007
2007/0201,628 DISTRIBUTED CONTROL OF POWER IN MULTIPOINT-TO-POINT ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING COMMUNICATION 31 2007
2007/0206,491 DISTRIBUTED CONTROL OF POWER IN MULTIPOINT-TO-POINT ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING COMMUNICATION 29 2007
2007/0195,687 SYMBOL ALIGNMENT IN MULTIPOINT-TO-POINT ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING COMMUNICATION 28 2007
2007/0204,317 SYMBOL ALIGNMENT IN MULTIPOINT-TO-POINT ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING COMMUNICATION 29 2007
2007/0174,890 SYNCHRONIZED MULTIPOINT-TO-POINT COMMUNICATION USING ORTHOGONAL FREQUENCY DIVISION 31 2007
2008/0037,663 TIMING AND SYMBOL ALIGNMENT IN MULTIPOINT-TO-POINT COMMUNICATION USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING 28 2007
7,492,791 Ranging and round trip delay timing adjustment in a multi-point to point bidirectional communication system 32 2007
7,539,126 Ranging and round trip delay timing adjustment in a multi-point to point bidirectional communication system 28 2007
2007/0147,229 RANGING AND ROUND TRIP DELAY TIMING ADJUSTMENT IN A MULTI-POINT TO POINT BIDIRECTIONAL COMMUNICATION SYSTEM 28 2007
2008/0273,607 RANGING AND ROUND TRIP DELAY TIMING ADJUSTMENT IN A MULTI-POINT TO POINT BIDIRECTIONAL COMMUNICATION SYSTEM 30 2007
7,352,690 Ranging and round trip delay timing adjustment in a multi-point to point bidirectional communication system 29 2007
7,426,177 Round trip delay adjustment in multipoint-to-point communication using orthogonal frequency division multiplexing 31 2007
7,280,564 Synchronization techniques in multipoint-to-point communication using orthgonal frequency division multiplexing 58 2007
7,352,779 System for multi-frame alignment 30 2007
2007/0280,099 MULTIFRAME ALIGNMENT IN MULTIPOINT-TO-POINT COMMUNICATION USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING 30 2007
2007/0186,260 METHODS FOR MULTIFRAME ALIGNMENT 28 2007
2008/0123,514 METHODS FOR MULTIFRAME ALIGNMENT 29 2007
7,440,391 Method and system for dynamic bandwidth allocation 28 2007
2007/0186,261 DATA-SPECIFIC BANDWIDTH ALLOCATION IN MULTIPOINT-TO-POINT COMMUNICATION USING ORTHGONAL FREQUENCY DIVISION MULTIPLEXING 31 2007
2008/0043,612 COARSE AND FINE SYNCHRONIZATION ADJUSTMENTS 43 2007
7,355,963 Tone allocation in multipoint-to-point communication using orthgonal frequency division multiplexing 29 2007
2008/0049,599 TONE HOPPING IN A MULTIPOINT-TO-POINT ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING COMMUNICATION SYSTEM 31 2007
7,420,913 Method for tone hopping in a multipoint-to-point orthogonal frequency division multiplexing communication system 29 2007
2007/0286,240 GUARD TONES IN A MULTI-POINT TO POINT ORTHOGINAL FREQUENCY DIVISION MULTIPLEXING SYSTEM 28 2007
2007/0195,689 METHOD AND SYSTEM FOR ADAPTIVE MODULATION 28 2007
2007/0201,346 MULTIPOINT-TO-POINT COMMUNICATION USING ORTHGONAL FREQUENCY DIVISION MULTIPLEXING AND IDENTIFICATION CODES 36 2007
2007/0201,347 USE OF GUARD BANDS IN MULTIPOINT-TO-POINT ORTHGONAL FREQUENCY DIVISION MULTIPLEXING COMMUNICATION 29 2007
2007/0201,348 USE OF IDENTIFIER OF REMOTE UNIT FOR DOWNSTREAM SIGNALS 29 2007
2007/0201,573 SYSTEM FOR VARIABLE FORWARD ERROR CORRECTION IN A MULTIPOINT TO POINT ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM 28 2007
2007/0206,693 ADAPTIVE MODULATION IN MULTIPOINT-TO-POINT COMMUNICATION USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING 30 2007
7,391,711 Method and system for adaptive modulation 29 2007
2007/0211,617 VARIABLE ERROR CORRECTION IN MULTIPOINT-TO-POINT COMMUNICATION USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING 28 2007
7,417,944 Method for orderwire modulation 29 2007
7,436,812 System for oderwire modulation 28 2007
2007/0223,363 CONTROL MODULATION IN MULTIPOINT-TO-POINT COMMUNICATION USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING 26 2007
7,394,753 Training premable in multipoint-to-point communication using orthogonal frequency division multiplexing 28 2007
2007/0230,325 METHOD AND SYSTEM FOR TRAINING SEQUENCES 26 2007
7,355,964 Systems for contention-based bandwidth requests in orthogonal frequency division multiplexing systems 29 2007
2007/0237,070 METHODS FOR CONTENTION-BASED BANDWIDTH REQUESTS IN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEMS 34 2007
2007/0237,182 CONTENTION-BASED ACCESS IN MULTIPOINT-TO-POINT COMMUNICATION USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING 26 2007
2007/0242,597 SCANNING BY REMOTES IN MULTIPOINT-TO-POINT COMMUNICATION USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING 28 2007
7,391,712 Method and system for forward-looking tone allocation 32 2007
7,443,784 Methods and systems for tone hopping 28 2007
2007/0274,200 REMOTE BAND SCANNING IN MULTIPOINT-TO-POINT ORTHOGONAL FREQUENCY DIVISION MULITIPLEXING COMMUNICATION 28 2007
2007/0274,202 FORWARD-LOOKING TONE ALLOCATION IN MULTIPOINT-TO-POINT COMMUNICATION USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING 27 2007
7,385,916 System for multiple use subchannels 30 2007
2007/0253,500 METHOD FOR MULTIPLE USE SUBCHANNELS 31 2007
7,414,960 Multiuse subcarriers in multipoint-to-point communication using orthogonal frequency division multiplexing 29 2007
2007/0263,665 SYSTEMS FOR CONTENTION-BASED BANDWIDTH REQUESTS IN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEMS 29 2007
7,420,914 Synchronization techniques in multipoint-to-point communication using orthogonal frequency division multiplexing 29 2007
2008/0025,202 SCANNING BY REMOTES IN MULTIPOINT-TO-POINT COMMUNICATION USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING 28 2007
2008/0025,284 SYSTEM FOR MULTI-FRAME ALIGNMENT 28 2007
7,414,961 System and method for multiframe alignment in a multipoint-to-point orthogonal frequency division multiplexing system 29 2007
2008/0025,201 SYSTEM AND METHOD FOR RANGING AND ROUND TRIP DELAY ADJUSTMENT IN A MULTIPOINT-TO-POINT ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM 30 2007
7,400,572 System and method for contention based tones in a multipoint-to-point orthogonal frequency division multiplexing system 29 2007
2008/0031,127 SYSTEM AND METHOD FOR ORDERWIRE MODULATION IN A MULTIPOINT-TO-POINT ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM 36 2007
7,408,873 System and method for round trip delay adjustment in a multipoint-to-point orthogonal frequency division multiplexing system 30 2007
2008/0037,414 SYSTEM AND METHOD FOR MULTIFRAME ALIGNMENT IN A MULTIPOINT-TO-POINT ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM 28 2007
2008/0037,415 SYSTEM AND METHOD FOR RANGING IN A MULTIPOINT-TO-POINT ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM 28 2007
2008/0040,763 SYSTEM AND METHOD FOR CONTENTION BASED TONES IN A MULTIPOINT-TO-POINT ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM 30 2007
2008/0043,704 SYSTEM AND METHOD FOR ORDERWIRE MODULATION IN A MULTIPOINT-TO-POINT ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM 32 2007
2008/0049,604 SYSTEMS AND METHOD FOR ORTHOGONAL FREQUENCY DIVISIONAL MULTIPLEXING 29 2007
2008/0049,856 SYSTEMS AND METHOD FOR ORTHOGONAL FREQUENCY DIVISIONAL MULTIPLEXING 28 2007
2008/0049,860 SYSTEMS AND METHOD FOR ORTHOGONAL FREQUENCY DIVISIONAL MULTIPLEXING 28 2007
2008/0056,119 SYSTEMS AND METHOD FOR ORTHOGONAL FREQUENCY DIVISIONAL MULTIPLEXING 31 2007
2008/0056,398 SYSTEMS AND METHOD FOR ORTHOGONAL FREQUENCY DIVISIONAL MULTIPLEXING 28 2007
2008/0063,010 SYSTEMS AND METHOD FOR ORTHOGONAL FREQUENCY DIVISIONAL MULTIPLEXING 28 2007
2008/0082,598 SYSTEMS AND METHOD FOR ORTHOGONAL FREQUENCY DIVISIONAL MULTIPLEXING 29 2007
2008/0225,690 SYSTEMS AND METHOD FOR ORTHOGONAL FREQUENCY DIVISIONAL MULTIPLEXING 31 2007
2008/0225,691 SYSTEMS AND METHOD FOR ORTHOGONAL FREQUENCY DIVISIONAL MULTIPLEXING 31 2007
2008/0225,692 SYSTEMS AND METHOD FOR ORTHOGONAL FREQUENCY DIVISIONAL MULTIPLEXING 28 2007
2008/0240,214 SYSTEMS AND METHOD FOR ORTHOGONAL FREQUENCY DIVISIONAL MULTIPLEXING 28 2007
2008/0240,410 SYSTEMS AND METHOD FOR ORTHOGONAL FREQUENCY DIVISIONAL MULTIPLEXING 28 2007
2008/0253,435 SYSTEMS AND METHOD FOR ORTHOGONAL FREQUENCY DIVISIONAL MULTIPLEXING 28 2007
2009/0225,818 SYSTEMS AND METHOD FOR ORTHOGONAL FREQUENCY DIVISIONAL MULTIPLEXING 18 2007
2009/0067,516 RANGING AND ROUND TRIP DELAY TIMING ADJUSTMENT IN A MULTI-POINT TO POINT BIDIRECTIONAL COMMUNICATION SYSTEM 17 2007
7,697,453 Synchronization techniques in multipoint-to-point communication using orthogonal frequency division multiplexing 19 2008
7,706,349 Methods and systems for selecting modulation in an orthogonal frequency division multiplexing system 19 2008
2009/0074,095 SYSTEM FOR MULTI-FRAME ALIGNMENT 17 2008
2009/0080,505 RANGING AND ROUND TRIP DELAY TIMING ADJUSTMENT IN A MULTI-POINT TO POINT BIDIRECTIONAL COMMUNICATION SYSTEM 17 2008
2009/0080,554 TONE ALLOCATION IN MULTIPOINT-TO-POINT COMMUNICATION USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING 18 2008
2009/0316,816 METHOD FOR MULTIPLE USE SUBCHANNELS 22 2009
2010/0014,605 SYSTEM FOR MULTIPLE USE SUBCHANNELS 19 2009
 
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5,898,732 Data service channel provision for an AM compatible broadcast system 64 1996
5,764,706 AM compatible digital waveform frame timing recovery and frame synchronous power measurement 91 1996
5,859,876 Method and apparatus for improving AM compatible digital broadcast analog fidelity 69 1996
 
LUCENT TECHNOLOGIES INC. (6)
4,688,210 Method of and arrangement for synchronizing the receiver arrangements in a digital multiplex transmission system 172 1986
4,799,252 Digital radio transmission system 119 1988
RE33900 Error monitoring in digital transmission systems 122 1989
5,570,364 Control for multimedia communication on local access table 35 1994
5,621,753 Digital communication system and a primary station for use in such a system 64 1994
5,602,836 Multiple access cellular communication with circular interleaving and reduced dropped-packet runlengths 147 1994
 
SILICON VALLEY BANK COMMERCIAL FINANCE DIVISION (6)
5,768,269 Apparatus and method for establishing frame synchronization in distributed digital data communication systems 47 1995
5,793,759 Apparatus and method for digital data transmission over video cable using orthogonal cyclic codes 127 1996
5,745,837 Apparatus and method for digital data transmission over a CATV system using an ATM transport protocol and SCDMA 246 1996
6,356,555 Apparatus and method for digital data transmission using orthogonal codes 257 1996
5,991,308 Lower overhead method for data transmission using ATM and SCDMA over hybrid fiber coax cable plant 255 1996
6,307,868 Apparatus and method for SCDMA digital data transmission using orthogonal codes and a head end modem with no tracking loops 94 1997
 
ALCATEL NETWORK SYSTEMS, INC. (5)
4,291,403 Digital implementation of parity monitor and alarm 52 1979
4,393,493 Automatic protection apparatus for span lines employed in high speed digital systems 77 1980
5,185,736 Synchronous optical transmission system 306 1989
5,181,106 Video line shelf arrangement in an optical fiber telecommunications network providing broadband switched video services 114 1991
5,528,283 Switched video distribution apparatus 56 1992
 
ALCATEL-LUCENT USA INC. (5)
5,528,582 Network apparatus and method for providing two way broadband communications 142 1994
5,631,846 Upstream communications for interactive networks 76 1995
6,055,242 Method and apparatus enabling synchronous transfer mode, variable length and packet mode access for multiple services over a broadband communication network 120 1997
6,028,933 Encrypting method and apparatus enabling multiple access for multiple services and multiple transmission modes over a broadband communication network 153 1997
6,349,138 Method and apparatus for digital transmission incorporating scrambling and forward error correction while preventing bit error spreading associated with descrambling 67 1997
 
AT&T IPM CORP. (5)
5,513,184 Wireless communication system 63 1993
5,420,851 Method of multiple access 199 1993
5,488,412 Customer premises equipment receives high-speed downstream data over a cable television system and transmits lower speed upstream signaling on a separate channel 383 1994
5,534,913 Apparatus and method for integrating downstream data transfer over a cable television channel with upstream data carrier by other media 271 1994
5,513,248 Cordless telephone micro-cellular system 60 1994
 
CABLE TELEVISION LABORATORIES, INC. (5)
5,371,548 System for transmission of digital data using orthogonal frequency division multiplexing 114 1993
5,381,459 System for distributing radio telephone signals over a cable television network 157 1993
5,815,794 Undesirable energy suppression system in the return path of a bidirectional cable network having dynamically allocated time slots 124 1995
5,815,488 Multiple user access method using OFDM 156 1995
5,867,764 Hybrid return gate system in a bidirectional cable network 90 1996
 
GO NET SYSTEMS LTD. (5)
2007/0121,546 Simultaneous simulcast and single cast hybrid multi-tone communication system 52 2006
2007/0121,573 hybrid system having multiple downlink channels and a single uplink channel 30 2006
2007/0121,743 Ubiquitous coverage OFDM hybrid system 31 2006
2007/0121,744 Hybrid point to multipoint communication system 32 2006
2007/0121,745 Filtering process for enhancing OFDMA uplink reception sensitivity 32 2006
 
INTERDIGITAL TECHNOLOGY CORPORATION (5)
5,469,468 Overlaying spread-spectrum satellite system and method 155 1993
5,546,383 Modularly clustered radiotelephone system 40 1993
5,852,604 Modularly clustered radiotelephone system 55 1996
6,208,630 Modulary clustered radiotelephone system 31 1998
6,496,488 Modularly clustered radiotelephone system 31 2000
 
KABUSHIKI KAISHA TOSHIBA (5)
4,868,811 Multiple access communication system 93 1988
5,440,268 AFC circuit for QPSK demodulator 65 1994
5,608,764 OFDM synchronization demodulation circuit 153 1994
5,646,935 Hierarchical quadrature frequency multiplex signal format and apparatus for transmission and reception thereof 84 1995
5,694,389 OFDM transmission/reception system and transmitting/receiving apparatus 225 1996
 
SILICON VALLEY BANK (5)
5,285,474 Method for equalizing a multicarrier signal in a multicarrier communication system 350 1992
5,317,596 Method and apparatus for echo cancellation with discrete multitone modulation 104 1992
5,400,322 Updating of bit allocations in a multicarrier modulation transmission system 285 1993
5,519,731 ADSL compatible discrete multi-tone apparatus for mitigation of T1 noise 184 1994
5,557,612 Method and apparatus for establishing communication in a multi-tone data transmission system 135 1995
 
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) (5)
5,175,867 Neighbor-assisted handoff in a cellular communications system 265 1991
5,448,750 Segregation method of dynamic channel allocation in a mobile radio system 115 1992
5,507,034 Channel selection in a cellular communication system 83 1993
5,603,081 Method for communicating in a wireless communication system 219 1993
6,496,982 Device and method relating to cable TV networks 53 1998
 
ALCATEL N.V. (4)
4,748,689 Fiber-optic distribution system for broadband signals 58 1986
4,775,210 Voice and data distribution system with fiber optic multinode star network 42 1986
5,337,175 Optical communications system for the subscriber area with optical amplifiers 60 1992
5,373,502 Process, transmitter and receiver for data transmission with variable traffic volume and a control station for coordinating several such transmitters and receivers 191 1993
 
HYBRID PATENTS INCORPORATED (4)
5,347,304 Remote link adapter for use in TV broadcast data transmission system 267 1993
5,586,121 Asymmetric hybrid access system and method 419 1995
5,959,660 Subchannelization scheme for use in a broadband communications system 88 1996
5,946,322 Hybrid access system utilizing credit/done polling protocols 95 1996
 
INTELLECTUAL VENTURES I LLC (4)
5,652,772 Method and apparatus for synchronization in digital transmisison systems of the OFDM type 127 1996
5,784,363 Arrangement in a multi-user system 97 1996
5,726,973 Method and arrangement for synchronization in OFDM modulation 78 1996
5,909,436 Random access orthogonal frequency division multiplex system and method 102 1996
 
LOCKHEED MARTIN CORPORATION (4)
5,025,485 Multi-feed, multi-channel communication system 78 1989
5,128,680 Modulated range tone system 26 1990
5,680,143 Method and apparatus for a low complexity satellite ranging system using Gaussian noise overlay 27 1996
5,867,489 Method and apparatus for TDMA slot synchronization with precision ranging 38 1996
 
QUALCOMM INCORPORATED (4)
5,103,459 System and method for generating signal waveforms in a CDMA cellular telephone system 1572 1990
5,504,773 Method and apparatus for the formatting of data for transmission 269 1993
5,600,754 Method and system for the arrangement of vocoder data for the masking of transmission channel induced errors 88 1994
5,943,361 System and method for generating signal waveforms in a CDMA cellular telephone system 168 1995
 
TECHNOLOGIES FUTURES, INC. D/B/A ORION TECHNOLOGY (4)
5,088,111 Modulation and demodulation system employing AM-PSK and FSK for communication system using digital signals 81 1989
5,084,903 Modulation and demodulation system employing AM-PSK and QPSK communication system using digital signals 117 1990
5,272,700 Spectrally efficient broadband transmission system 90 1991
5,487,066 Distributed intelligence network using time and frequency multiplexing 61 1994
 
ALCATEL USA SOURCING, L.P. (3)
5,987,014 Multipath resistant, orthogonal code-division multiple access system 81 1994
5,794,119 Subscriber frequency control system and method in point-to-multipoint RF communication system 76 1995
5,809,431 Local multipoint distribution system 97 1995
 
AT&T Bell Laboratories (3)
4,495,619 Transmitter and receivers using resource sharing and coding for increased capacity 216 1984
5,101,290 High-performance packet-switched WDM ring networks with tunable lasers 68 1990
5,278,889 Video telephony dialing 156 1992
 
CANON KABUSHIKI KAISHA (3)
5,122,700 Frictional material for vibration wave driven motor 48 1990
5,533,012 Code-division multiple-access system with improved utilization of upstream and downstream channels 74 1995
5,907,586 Method and device for signal decision, receiver and channel condition estimating method for a coding communication system 82 1996
 
ERICSSON INC. (3)
5,353,307 Automatic simulcast alignment 133 1993
6,430,417 Mobile station access to a base station on a digital multiple access control channel 67 1995
5,956,338 Protocol for broadband data communication over a shared medium 92 1996
 
FUJITSU LIMITED (3)
4,809,298 Radio data transmission system 37 1987
5,216,697 Signal quality detector circuit 46 1990
5,226,081 Multi-carrier communication system using ciphered carrier bit assignment information 55 1991
 
HARRIS CORPORATION (3)
4,367,548 Subscriber station for providing multiple services to a subscriber 203 1980
4,528,656 Radio communication system using frequency division multiplexing for transmission between a master station and a plurality of remote stations 112 1982
4,707,832 Switched point-to-point local area network control mechanism 73 1985
 
KOKUSAI DENSHIN DENWA KABUSHIKI KAISHA (3)
4,566,100 Bit error rate measuring system 56 1983
4,783,779 Frequency assignment system in FDMA communication system 82 1986
5,613,193 Compensation of frequency offset 94 1994
 
LICENTIA PATENT-VERWALTUNGS-GMBH (3)
4,441,180 Service integrated communication transmission and interchange system 147 1980
4,395,780 Service-integrated communication transmission and exchange system 89 1981
4,545,048 Service integrated digital transmission system 62 1981
 
NOKIA MOBILE PHONES LTD. (3)
5,214,687 Method to determine transmission quality 81 1991
5,557,639 Enhanced decoder for a radio telephone 87 1994
2002/0172,293 Non-zero complex weighted space-time code for multiple antenna transmission 17 2001
 
SAMSUNG ELECTRONICS CO., LTD. (3)
4,996,706 Method of controlling the electric power supplied to a modem 74 1989
6,005,861 Home multimedia network architecture 204 1999
2007/0053,465 Apparatus and method for performing ranging in a communication system 30 2006
 
Thomson-CSF (3)
4,561,101 Clock-frequency recovery device adapted to high-frequency radiocommunications in disturbed media 38 1983
5,313,169 Method of realigning the local oscillators of a receiver and device for implementing the method 64 1992
5,329,552 Method of binary encoding the points of a constellation used in a multicarrier modulation of OFDM type 47 1992
 
ADC TELECOMMUNICATIONS, INC. (2)
5,519,830 Point-to-multipoint performance monitoring and failure isolation system 96 1993
5,655,068 Point-to-multipoint performance monitoring and failure isolation system 72 1996
 
AGENCE SPATIALE EUROPEENNE (2)
5,297,136 Multicarrier demodulator 41 1992
5,327,455 Method and device for multiplexing data signals 198 1993
 
C-Cor Labs, Inc. (2)
4,512,033 Remote level adjustment system for use in a multi-terminal communications system 128 1982
4,648,123 Remote level measurement system for use in a multi-terminal communications system 117 1985
 
Cincinnati Electronics Corporation (2)
4,267,591 QPSK Suppressed carrier with rotating reference phase 50 1979
4,879,527 Phase lock loop and improved phase detector therefor 42 1989
 
COMSAT CORPORATION (2)
4,602,375 Onboard clock correction by means of drift prediction 45 1982
4,475,211 Digitally controlled transversal equalizer 49 1982
 
ENTERASYS NETWORKS, INC. (2)
5,029,164 Congestion avoidance in high-speed network carrying bursty traffic 209 1990
5,650,997 Method and apparatus for use in a network of the ethernet type, to improve fairness by controlling collision backoff times in the event of channel capture 70 1996
 
GENERAL ELECTRIC COMPANY (2)
4,774,707 Random access communication system with scheduled data transmission and asynchronous contention scheduling 129 1986
4,701,911 Media accessing apparatus and method for communication system 38 1986
 
HITACHI, LTD. (2)
4,604,745 Method of searching fault locations in digital transmission line 49 1984
5,537,414 Method of wireless communication between base station and mobile station and multiple access communication system 195 1993
 
HMD HOLDINGS (2)
5,063,574 Multi-frequency differentially encoded digital communication for high data rate transmission through unequalized channels 116 1990
5,166,924 Echo cancellation in multi-frequency differentially encoded digital communications 145 1990
 
INFORMATION RESOURCES, INC. (2)
4,331,974 Cable television with controlled signal substitution 281 1980
4,404,589 Cable television with multi-event signal substitution 166 1980
 
International Mobile Machines Corporation (2)
4,953,197 Combination spatial diversity system 88 1988
5,022,024 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels 215 1989
 
KDDI CORPORATION (2)
4,862,104 Phase synchronization system 44 1989
5,128,625 Adaptive phase lock loop system 77 1990
 
MANITOBA TELEPHONE SYSTEM, THE (2)
4,430,731 Video and data distribution module with subscriber terminal 165 1981
4,484,218 Video distribution control system 198 1981
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (2)
4,709,406 A.F.C. system for broad-band FM receiver 52 1986
5,802,241 Communication system 105 1996
 
MOTOROLA SOLUTIONS, INC. (2)
5,343,499 Quadrature amplitude modulation synchronization method 65 1992
5,365,525 Method for reducing bandwidth of a wireline communication path 38 1992
 
National Transcommunications Limited (2)
5,488,632 Transmission and reception in a hostile interference environment 99 1992
5,345,440 Reception of orthogonal frequency division multiplexed signals 124 1993
 
North American Philips Corporation (2)
5,134,464 Method and apparatus for the transmission and reception of a multicarrier digital television signal 160 1991
5,291,289 Method and apparatus for transmission and reception of a digital television signal using multicarrier modulation 185 1992
 
People's Telephone Cooperative, Inc. (2)
4,860,287 Network having a synchronizer for synchronization between a primary and a remote station 50 1987
5,185,738 Fiberoptic telephone systems 52 1990
 
ROCKSTAR CONSORTIUM US LP (2)
5,408,260 Customer premises ADSL signal distribution arrangement 183 1994
5,499,047 Distribution network comprising coax and optical fiber paths for transmission of television and additional signals 94 1994
 
SONY CORPORATION (2)
5,471,464 Orthogonal frequency division multiplex demodulation apparatus 134 1994
5,903,546 Means and method of improving multiplexed transmission and reception by coding and modulating divided digital signals 86 1996
 
SOUND VIEW INNOVATIONS, LLC (2)
6,041,051 Method and apparatus enabling multiple access for multiple services and multiple transmission modes over a broadband communication network utilizing an adaptive digital access protocol 84 1997
6,075,787 Method and apparatus for messaging, signaling, and establishing a data link utilizing multiple modes over a multiple access broadband communications network 205 1997
 
SYMBOL TECHNOLOGIES, INC. (2)
5,528,621 Packet data communication system 168 1993
2007/0141,997 Radio frequency identification (RFID) antenna integration techniques in mobile devices 55 2005
 
TVWORKS, LLC (2)
4,734,764 Cable television system selectively distributing pre-recorded video and audio messages 282 1985
5,195,092 Interactive multimedia presentation & communication system 367 1991
 
XEL Communications, Inc. (2)
5,488,413 CATV telephony system using subsplit band for both directions of transmission 92 1994
5,606,725 Broadband network having an upstream power transmission level that is dynamically adjusted as a function of the bit error rate 99 1994
 
Zenith Electronics Corporation (2)
4,528,663 Peak load access in a two-way CATV contention system 71 1983
5,546,119 Transmission modulator for cable television upstream data transmission 41 1994
 
3DLABS INC., LTD. (1)
5,042,000 Integral transform method 51 1989
 
Albrit Technologies Ltd. (1)
5,495,283 Cable television video messaging system and headend facility incorporating same 90 1993
 
ALLEN-BRADLEY COMPANY, INC. (1)
5,289,474 Communication network interface testing system 46 1988
 
AMERICAN TELEPHONE AND TELEGRAPH COMPANY (1)
5,054,050 Drop testing in fiber to the home systems 67 1990
 
Applied Spectrum Technologies, Inc. (1)
4,677,686 Passive transmission of data over cable TV systems 66 1983
 
ARRIS ENTERPRISES, INC. (1)
6,075,972 CATV network and cable modem system having a wireless return path 69 1998
 
ARRIS INTERNATIONAL, INC. (1)
5,425,027 Wide area fiber and TV cable fast packet cell network 159 1993
 
ASCEND COMMUNICATIONS, INC. (1)
5,058,133 Method and apparatus for digital communication 55 1990
 
AT&T Information Systems Inc. (1)
4,651,320 Inband coding of secondary data 51 1984
 
ATC TECHNOLOGIES, LLC (1)
6,058,307 Priority and preemption service system for satellite related communication using central controller 95 1998
 
ATMEL CORPORATION (1)
5,553,076 Method and apparatus for a wireless local area network 88 1994
 
AVAYA INC. (1)
5,185,742 Transparent signaling for remote terminals 63 1990
 
BARD TECHNOLOGIES, U.S.A. A PARTNERSHIP OF NEW YORK (1)
4,646,296 Distributed telephone system 116 1984
 
BRN PHOENIX, INC. (1)
2003/0123,384 Stacked-carrier discrete multiple tone communication technology and combinations with code nulling, interference cancellation, retrodirective communication and adaptive antenna arrays 62 2002
 
Canai Computer and Network Architecture Inc. (1)
5,157,659 Packet communication system and method of clearing communication bus 73 1990
 
CASIO COMPUTER CO., LTD. (1)
5,083,218 Hand-held image reading apparatus 65 1990
 
Catel Telecommunications, Inc. (1)
4,959,862 Active multichannel video processing hub for optimum transition from fiber to coax 87 1988
 
CATERPILLAR INC. (1)
5,588,413 Engine assembly with leaf spring cam follower 35 1995
 
CDC PROPRIETE INTELLECTUELLE (1)
5,293,382 Method for FDMA signal multiplexing and demultiplexing 47 1993
 
CELLCO PARTNERSHIP D/B/A VERIZON WIRELESS (1)
5,243,598 Microcell system in digital cellular 196 1991
 
CIENA CORPORATION (1)
5,659,351 Switch and insertion networks in optical cable TV system 94 1994
 
CITICORP NORTH AMERICA, INC. (1)
4,516,170 Dual mode UHF tuning system 61 1984
 
CNR-STIBNOT, A CORP. OF ITALY (1)
4,503,533 Local area communication network utilizing a round robin access scheme with improved channel utilization 141 1981
 
Compagnie Generale d'Electricite (1)
4,745,592 Coherent photonic telecommunications system 41 1987
 
Comsat Laboratories (1)
5,216,696 Programmable noise bandwidth reduction by means of digital averaging 45 1991
 
COMVERGE, INC. (1)
5,896,382 Method and apparatus for communicating information between a headend and subscriber over a wide area network 102 1996
 
CONCORD COMMUNICATIONS, INC. (1)
5,115,451 Local area network modem 55 1988
 
CONOCO INC. (1)
4,613,980 System for high accuracy remote decoding 36 1984
 
CONSTELLATION TECHNOLOGIES LLC (1)
5,471,474 Communications highway network system 90 1993
 
CORNELL UNIVERSITY (1)
4,791,590 High performance signal processor 116 1985
 
DAPHIMO CO. B.V., LLC (1)
2003/0026,282 Splitterless multicarrier modem 39 2002
 
Datapoint Corporation (1)
5,014,267 Video conferencing network 300 1989
 
DEVON COUNTY COUNCIL, COUNTY HALL, EXETER, DEVON, ENGLAND A CORP. OF ENGLAND (1)
4,821,120 Television sub-carrier transmission 109 1986
 
DIGITAL RADIO EXPRESS, INC. (1)
5,748,677 Reference signal communication method and system 158 1996
 
DOBSON, KURT (1)
4,943,980 Multi-carrier high speed modem 79 1989
 
DYNISCO HOTRUNNERS, INC. (1)
2007/0195,902 METHOD FOR VARIABLE FORWARD ERROR CORRECTION IN A MULTI-POINT TO POINT ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM 28 2007
 
Echelon Corporation (1)
5,355,114 Reconstruction of signals using redundant channels 175 1994
 
ELECTRONIC SPEECH SYSTEMS INC (1)
4,458,110 Storage element for speech synthesizer 34 1979
 
Endlink, Inc. (1)
5,771,449 Sectorized multi-function communication system 93 1995
 
ENERGY, UNITED STATES DEPARTMENT OF (1)
5,608,404 Imaging synthetic aperture radar 55 1993
 
ERICSSON GE MOBILE COMMUNICATIONS INC. (1)
5,283,811 Decision feedback equalization for digital cellular radio 94 1991
 
ETAT FRANCAIS REPRESENTE PAR LE SECRETARIAT D'ETAT AUX POSTES ET TELECOMMUNICATIONS (CENTRE NATIONAL D'ETUDES DES TELECOMMUNICATIONS) (1)
4,881,241 Method and installation for digital communication, particularly between and toward moving vehicles 163 1988
 
Feature Film Services (1)
4,215,366 Subscriber-limited reception television broadcast security encoder-decoder system 163 1979
 
FRANCE TELECOM (1)
5,299,192 Digital filter-type frequency demultiplexing device 95 1992
 
FUJI XEROX CO., LTD. (1)
4,710,918 Composite data transmission system 63 1986
 
FUNAI ELECTRIC CO., LTD. (1)
5,483,529 Receiver 133 1994
 
GENERAL DYNAMICS C4 SYSTEMS, INC. (1)
5,128,967 Symbol state trellis maximum likelihood detection method 71 1989
 
GENERAL DYNAMICS DECISION SYSTEMS, INC. (1)
4,612,626 Method of performing real input fast fourier transforms simultaneously on two data streams 47 1983
 
GENERAL INSTRUMENT EQUITY CORPORATION (1)
5,136,411 Dynamically responsive CATV system with shared fiber optic link 134 1989
 
GPT LIMITED (1)
6,097,736 Telecommunications network 46 1995
 
Grayline International Limited (1)
5,454,037 Portable secure-telephone communications module 54 1993
 
HANSEN, TOM (1)
2005/0122,218 Ranging and warning device using emitted and reflected wave energy 32 2003
 
HARRIS, JR., ROBERT CLAUDE, TRUSTEE OF THE ROBERT CLAUDE HARRIS, JR., REVOCABLE LIVING TRUST (1)
5,121,409 Multichannel satellite communication and control system 51 1990
 
HEINRICH-HERTZ-INSTITUT FUR NACHRICHTENTECHNIK BERLIN GMBH (1)
4,290,142 Interactive cable television system 196 1979
 
HITACHI AMERICA, LTD. (1)
5,282,023 Apparatus for NTSC signal interference cancellation through the use of digital recursive notch filters 177 1992
 
HONEYWELL INTERNATIONAL INC. (1)
7,372,859 Self-checking pair on a braided ring network 45 2004
 
INTEL CORPORATION (1)
5,553,064 High speed bidirectional digital cable transmission system 97 1994
 
INTELLECTUAL VENTURES II LLC (1)
5,963,557 High capacity reservation multiple access network with multiple shared unidirectional paths 256 1997
 
INTELLECTUAL VENTURES MOBLCOMMI LLC (1)
5,680,388 Method and arrangement for dynamic allocation of multiple carrier-wave channels for multiple access by frequency division of multiplexing 79 1995
 
INTELSAT SERVICES CORPORATION (1)
4,858,225 Variable bandwidth variable center-frequency multibeam satellite-switched router 81 1987
 
INTELSTAT (1)
5,515,056 Burst tone range processing system and method 33 1993
 
INTRATECH, INC. (1)
5,995,539 Method and apparatus for signal transmission and reception 105 1996
 
Inventahl AB (1)
5,559,795 Method in a TDMA radiosystem to let a central station communicate with both peripheral stations and other central stations 44 1994
 
IPCOM GMBH & CO. KG (1)
5,390,216 Synchronization method for a mobile radiotelephone 119 1993
 
ITRON, INC. (1)
5,673,252 Communications protocol for remote data generating stations 215 1995
 
JDS UNIPHASE CORPORATION (1)
5,751,766 Non-invasive digital communications test system 65 1995
 
JVC KENWOOD CORPORATION (1)
5,732,068 Signal transmitting apparatus and signal receiving apparatus using orthogonal frequency division multiplexing 135 1995
 
L'Etat Francais and Telediffusion de France S.A. (1)
5,191,576 Method for broadcasting of digital data, notably for radio broadcasting at high throughput rate towards mobile receivers, with time frequency interlacing and analog synchronization 126 1991
 
LCTL WIRELESS INVESTMENT, LLC (1)
5,375,140 Wireless direct sequence spread spectrum digital cellular telephone system 172 1992
 
LG ELECTRONICS INC. (1)
5,535,206 Upstream data transmission system for cable television 60 1995
 
M/A-COM TELECOMMUNICATIONS, INC., (1)
4,768,188 Optical demand assigned local loop communication system 115 1986
 
MACROVISION CORPORATION (1)
4,506,387 Programming-on-demand cable system and method 389 1983
 
MARCONI COMMUNICATIONS GMBH (1)
4,847,872 Method and arrangement for synchronizing a receiver in digital transmission systems 44 1988
 
Mark J. Dapper (1)
2001/0032,334 INGRESS PROTECTION IN A COMMUNICATION SYSTEM WITH ORTHOGONAL CARRIERS 38 1999
 
MASSACHUSETTS INSTITUTE OF TECHNOLOGY (1)
5,425,050 Television transmission system using spread spectrum and orthogonal frequency-division multiplex 121 1993
 
MATRA MARCONI SPACE UK LIMITED (1)
5,293,329 Apparatus for and method of digital signal processing 50 1992
 
MATSUSHITA ELECTRIC CORPORATION OF AMERICA (1)
5,485,630 Audio/video distribution system 71 1994
 
MICROCOM, INC. (1)
4,691,314 Method and apparatus for transmitting data in adjustable-sized packets 89 1985
 
MICRON TECHNOLOGY, INC. (1)
5,963,833 Method for cleaning semiconductor wafers and 53 1997
 
MICROSEMI SEMICONDUCTOR (U.S.) INC. (1)
6,125,139 Narrowband digital cordless telephone 53 1996
 
MICROSOFT CORPORATION (1)
5,479,168 Compatible signal encode/decode system 168 1993
 
MITEL CORPORATION (1)
4,866,732 Wireless telephone system 238 1986
 
Mitel Telecom Limited (1)
5,005,183 Wireless telephone system 144 1989
 
MITSUBISHI DENKI KABUSHIKI KAISHA (1)
4,807,259 Time synchronization method in data transmission system 104 1987
 
MMS SPACE SYSTEMS LIMITED (1)
5,345,439 Multi purpose digital signal regenerative processing apparatus 179 1993
 
MOBILE TELECOMMUNICATIONS TECHNOLOGIES, LLC (1)
5,590,403 Method and system for efficiently providing two way communication between a central network and mobile unit 85 1992
 
MOORE DIVERSIFIED PRODUCTS, INC. (1)
4,343,042 Bi-directional data transmission and control system 192 1979
 
MOTOROLA MOBILITY, INC. (1)
5,327,575 Directional handover control in digital mobile radio systems employing MAHO 128 1992
 
NATIONAL SEMICONDUCTOR CORPORATION (1)
5,170,470 Integrated modem which employs a host processor as its controller 84 1988
 
NAXOS DATA LLC (1)
5,303,229 Optical network unit 137 1991
 
NCR CORPORATION (1)
4,847,880 Multipoint modem system having fast synchronization 83 1988
 
New Potency Products, Inc. (1)
5,167,632 Syringe 54 1992
 
NEW VIACOM INTERNATIONAL CORP. (1)
6,011,950 Apparatus and method for using forward error correction setting to enable simultaneous use of multiple modulation systems on terrestrial distribution networks 43 1999
 
NEXTIRAONE, LLC (1)
5,177,739 Multiport - multipoint digital data service 67 1990
 
Nippon Electric Co., Ltd. (1)
4,300,229 Transmitter and receiver for an othogonally multiplexed QAM signal of a sampling rate N times that of PAM signals, comprising an N/2-point offset fourier transform processor 65 1980
 
NIPPON HOSO KYOKAI (1)
5,406,551 Method and apparatus for digital signal transmission using orthogonal frequency division multiplexing 144 1993
 
NOKIA TELECOMMUNICATIONS OY (1)
5,703,873 Method and apparatus for synchronizing subscriber equipment with base stations in a CDMA radio network 101 1995
 
NORTEL NETWORKS LIMITED (1)
4,500,989 Digital communication system 61 1982
 
NORTHROP GRUMMAN CORPORATION (1)
4,604,721 Computer and method for high speed prime factor transform 48 1985
 
NTT MOBILE COMMUNICATIONS NETWORK INC. (1)
5,537,443 Interference signal cancelling method, receiver and communication system using the same 113 1994
 
NXP B.V. (1)
5,541,965 Carrier frequency synchronization device using two different B/W filters 52 1994
 
PAC-TEL CORPORATION (1)
5,193,109 Zoned microcell with sector scanning for cellular telephone system 178 1991
 
PANASONIC CORPORATION (1)
5,600,672 Communication system 124 1994
 
PARADYNE CORPORATION (1)
4,381,546 System for the quantitative measurement of impairments in the communication channel of a quadrature amplitude modulation data communication system 62 1979
 
PERICLE WIRELESS TECHNOLOGY, INC. (1)
5,541,955 Adaptive data rate modem 310 1995
 
PHILIPS ELECTRONICS NORTH AMERICA CORPORATION (1)
5,802,117 Method and apparatus for joint frequency offset and timing estimation of a multicarrier modulation system 96 1996
 
Pioneer Electronic Corporation (1)
4,558,358 Cable network monitoring system for CATV system 66 1982
 
PLESSEY COMPANY LIMITED, THE (1)
4,387,456 Alarm monitoring arrangements for digital telecommunications switching networks 39 1980
 
PLESSEY SEMICONDUCTORS LIMITED (1)
5,193,103 Digital phase locked loop circuit 41 1991
 
POLAROID CORPORATION (1)
4,587,066 Method and apparatus for forming magnetic recording media 38 1984
 
POWERWAVE TECHNOLOGIES S.A.R.L. (1)
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RACAL-DATACOM, INC. (1)
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Other [Check patent profile for assignment information] (7)
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The United States of America as represented by the Secretary of the Navy (1)
8,150,325 Blanking system 1 2008

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