US Patent No: 5,029,183

Number of patents in Portfolio can not be more than 2000

Packet data communication network

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Abstract

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A packet data transmission system is used to link a number of remote hand-held data-gathering units such as bar code readers to a central computer which maintains a database management system. Data packets are sent from the remote units by an RF link to intermediate base stations, then sent by the base stations to the central computer by a serial link. Direct sequence spread spectrum modulation is used for the RF link. The remote hand-held units initiate an exhange using RF transmission to and from the base stations, receiving only during a rigid time window following a transmission from the remote unit. The base stations cannot initiate communication to the remote units, but instead send data to the remote units only as part of the exchange.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
SYMBOL TECHNOLOGIES, INC.HOLTSVILLE, NY2014

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Tymes, LaRoy Cameron Park, CA 11 1705

Cited Art Landscape

Patent Info (Count) # Cites Year
 
SYMBOL TECHNOLOGIES, INC. (5)
4,409,470 Narrow-bodied, single-and twin-windowed portable laser scanning head for reading bar code symbols 338 1982
4,460,120 Narrow bodied, single- and twin-windowed portable laser scanning head for reading bar code symbols 264 1983
4,673,805 Narrow-bodied, single- and twin-windowed portable scanning head for reading bar code symbols 145 1983
4,736,095 Narrow-bodied, single- and twin-windowed portable laser scanning head for reading bar code symbols 151 1986
4,758,717 Narrow-bodied, single-and twin-windowed portable laser scanning head for reading bar code symbols 208 1986
 
Bell Telephone Laboratories, Incorporated (2)
4,639,914 Wireless PBX/LAN system with optimum combining 188 1984
4,789,983 Wireless network for wideband indoor communications 221 1987
 
AT&T Company and AT&T Bell Laboratories (1)
4,672,658 Spread spectrum wireless PBX 318 1986
 
BHL PATENT HOLDINGS LLC (1)
2002/0143,320 Tracking medical products with integrated circuits 11 2002
 
FAIRCHILD WESTON SYSTEMS INC. (1)
4,829,540 Secure communication system for multiple remote units 104 1987
 
Hughes Aircraft Company (1)
4,740,792 Vehicle location system 307 1986
 
MCKESSON INFORMATION SOLUTIONS INC. (1)
4,850,009 Portable handheld terminal including optical bar code reader and electromagnetic transceiver means for interactive wireless communication with a base communications station 386 1988
 
MOTOROLA, INC. (1)
4,247,908 Re-linked portable data terminal controller system 155 1978
 
The MITRE Corporation (1)
4,291,409 Spread spectrum communications method and apparatus 162 1978
 
Other [Check patent profile for assignment information] (1)
4,475,208 Wired spread spectrum data communication system 138 1982

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
BROADCOM CORPORATION (58)
5,602,854 Wireless personal local area network utilizing removable radio frequency modules with digital interfaces and idle sense communication protocol 56 1993
5,394,436 Radio frequency local area network 88 1994
5,790,536 Hierarchical communication system providing intelligent data, program and processing migration 108 1995
6,654,378 Transaction control system including portable data terminal and mobile customer service station 21 1995
5,682,379 Wireless personal local area network 173 1996
5,949,776 Hierarchical communication system using premises, peripheral and vehicular local area networking 139 1997
6,084,867 Apparatus and method of routing data in a radio frequency local area network 71 1998
6,614,768 Enhanced mobility and address resolution in a wireless premises based network 42 1998
6,970,434 Hierarchical communication system providing intelligent data, program and processing migration 51 1998
6,864,558 Layout technique for C3MOS inductive broadbanding 6 2001
7,606,575 Remote radio data communication system with data rate switching 2 2002
6,895,450 Communication network having a plurality of bridging nodes which transmit a beacon to terminal nodes in power saving state that it has messages awaiting delivery 8 2002
6,937,080 Current-controlled CMOS logic family 31 2002
6,900,670 Current-controlled CMOS logic family 10 2002
7,907,577 Communication network providing wireless and hard-wired dynamic routing 0 2002
6,911,855 Current-controlled CMOS circuit using higher voltage supply in low voltage CMOS process 27 2002
6,897,697 Current-controlled CMOS circuit using higher voltage supply in low voltage CMOS process 22 2002
6,909,309 Current-controlled CMOS circuits with inductive broadbanding 10 2002
8,774,199 Fibre channel arbitrated loop bufferless switch circuitry to increase bandwidth without significant increase in cost 0 2003
8,750,320 Fibre channel arbitrated loop bufferless switch circuitry to increase bandwidth without significant increase in cost 0 2003
7,606,287 Radio frequency communication network having adaptive communication parameters 6 2003
7,109,799 Current-controlled CMOS wideband data amplifier circuits 3 2003
7,471,651 Transaction control system including portable data terminal and mobile customer service station 5 2003
7,885,242 Enhanced mobility and address resolution in a wireless premises based network 1 2003
7,440,416 Hierarchical communication system providing intelligent data, program and processing migration 23 2003
7,672,674 Remote radio data communication system with data rate switching 3 2004
7,132,727 Layout technique for C3MOS inductive broadbanding 0 2004
7,135,889 Universal single-ended parallel bus 0 2004
6,982,583 Current-controlled CMOS circuit using higher voltage supply in low voltage CMOS process 23 2004
7,415,548 Communication network having a plurality of bridging nodes which transmits a polling message with backward learning technique to determine communication pathway 11 2004
7,609,747 Radio frequency communication network having adaptive communication parameters 7 2005
8,180,928 Method and system for supporting read operations with CRC for iSCSI and iSCSI chimney 1 2005
7,996,573 Method and system for supporting read operations with CRC for iSCSI and iSCSI chimney 0 2005
7,598,788 Current-controlled CMOS (C3MOS) fully differential integrated delay cell with variable delay and high bandwidth 5 2005
7,362,174 Current-controlled CMOS (C3MOS) wideband input data amplifier for reduced differential and common-mode reflection 0 2005
7,510,121 Multi-level hierarchical radio-frequency communication system 33 2006
7,633,919 Communication network providing wireless and hard-wired dynamic routing 0 2006
8,116,203 Multiple virtual channels for use in network devices 0 2007
8,135,016 System and method for identifying upper layer protocol message boundaries 1 2007
8,402,142 System and method for TCP/IP offload independent of bandwidth delay product 0 2007
7,849,208 System and method for TCP offload 2 2008
8,798,091 Fibre channel arbitrated loop bufferless switch circuitry to increase bandwidth without significant increase in cost 0 2008
7,912,064 System and method for handling out-of-order frames 3 2008
7,899,951 Communication network having a plurality of bridging nodes which transmits a polling message with backward learning technique to determine communication pathway 2 2008
7,969,911 Hierarchical communication system providing intelligent data, program and processing migration 8 2008
8,767,756 Fibre channel arbitrated loop bufferless switch circuitry to increase bandwidth without significant increase in cost 0 2008
7,724,057 Current-controlled CMOS logic family 3 2009
7,919,985 Current-controlled CMOS circuits with inductive broadbanding 2 2009
7,934,021 System and method for network interfacing 2 2009
7,929,540 System and method for handling out-of-order frames 6 2010
8,451,863 System and method for identifying upper layer protocol message boundaries 0 2010
8,345,689 System and method for identifying upper layer protocol message boundaries 0 2010
8,299,834 Current-controlled CMOS logic family 1 2010
8,549,152 System and method for TCP/IP offload independent of bandwidth delay product 2 2010
8,526,329 Hierarchical communication system providing intelligent data, program and processing migration 34 2010
8,493,857 Multiple logical channels for use in network devices 0 2011
8,677,010 System and method for TCP offload 0 2011
8,823,435 Current-controlled CMOS logic family 0 2012
 
SYMBOL TECHNOLOGIES, INC. (55)
5,157,687 Packet data communication network 308 1990
5,142,550 Packet data communication system 159 1990
5,280,498 Packet data communication system 192 1991
5,302,813 Multi-bit digitizer 30 1992
5,340,972 Hands-free bar code scanner with finger activated optical control 55 1992
5,418,812 Radio network initialization method and apparatus 90 1992
5,401,944 Traveler security and luggage control system 104 1992
5,393,965 Flexible merchandise checkout and inventory management system 120 1992
5,528,621 Packet data communication system 168 1993
5,519,577 Spread spectrum radio incorporated in a PCMCIA Type II card holder 45 1993
5,479,441 Packet data communication system 104 1994
5,644,601 Method and apparatus for bias suppression in a VCO based FM transmission system 44 1994
6,082,621 Interface between threshold processing digitizer for bar code reader 25 1994
5,668,803 Protocol for packet data communication system 295 1994
5,449,893 Digitizer for bar code reader 25 1994
5,812,589 Radio network initialization method and apparatus 48 1995
6,170,749 Method of scanning indicia using selective sampling 46 1995
5,734,152 Optical scanners and signal processors therefor 19 1995
5,754,587 Method and apparatus for bias suppression in a VCO based FM transmission system 41 1996
5,838,720 Transceiver control with sleep mode operation 107 1996
6,236,674 Transceiver control with sleep mode operation 100 1996
6,164,540 Optical scanners 34 1996
6,067,297 Embedded access point supporting communication with mobile unit operating in power-saving mode 222 1996
5,848,064 Wireless software upgrades with version control 195 1996
6,010,071 Finger-mounted electro-optical scanner with on-board short range radio transmitter 8 1997
6,535,493 Mobile internet communication protocol 245 1998
6,031,830 Wireless software upgrades with version control 63 1998
6,069,911 Radio network initialization method and apparatus 0 1998
6,188,681 Method and apparatus for determining alternative second stationary access point in response to detecting impeded wireless connection 55 1998
6,169,769 Method and apparatus for bias suppression in a VCO based FM transmission system 6 1998
6,826,756 Automatic transfer of data from an input device to a software application 3 1998
6,237,053 Configurable operating system having multiple data conversion applications for I/O connectivity 10 1998
6,694,366 Data reconciliation between a computer and a mobile data collection terminal 41 1998
6,484,029 Apparatus and methods for adapting mobile unit to wireless LAN 67 1998
6,643,506 Wireless software upgrades with version control 68 1998
6,308,061 Wireless software upgrades with version control 79 1999
7,358,857 Global positioning systems applications 11 1999
6,209,788 Optical scanners 35 1999
7,492,248 Multi-tier wireless communications architecture, applications and methods 3 2000
6,404,772 Voice and data wireless communications network and method 142 2000
7,126,926 Multi-tier wireless communications architecture, applications and methods 35 2000
7,206,849 Communication in a wireless communications network when a mobile computer terminal may be unreachable 10 2000
6,675,203 Collecting data in a batch mode in a wireless communications network with impeded communication 26 2000
7,260,395 Apparatus and method for wireless local area networks of different countries 8 2000
6,547,142 Method of scanning indicia using selective sampling 40 2000
6,996,634 Configurable operating system for control of a mobile I/O device 10 2001
6,732,933 Coupling of bar code data readers to mobile terminals operable in wireless networks 19 2001
8,660,061 Voice and data wireless communications network and method 0 2001
7,494,064 ASIC for supporting multiple functions of a portable data collection device 2 2001
7,040,538 Bar code reader including linear sensor array and hybrid camera and bar code reader 9 2002
8,189,542 Voice and data wireless communications network and method 0 2005
8,149,796 Voice and data wireless communications network and method 0 2005
7,339,905 Wireless communication system for telephonic calls 1 2006
7,693,101 Apparatus for interfacing a wireless local network and a wired voice telecommunications system 3 2006
7,738,865 Apparatus and method for wireless local area networks of different countries 2 2007
 
TRAPEZE NETWORKS, INC. (29)
7,221,927 Station mobility between access points 28 2004
7,573,859 System and method for remote monitoring in a wireless network 23 2006
8,457,031 System and method for reliable multicast 0 2006
7,724,703 System and method for wireless network monitoring 17 2006
8,638,762 System and method for network integrity 0 2006
7,529,925 System and method for distributing keys in a wireless network 30 2006
7,551,619 Identity-based networking 26 2006
7,558,266 System and method for restricting network access using forwarding databases 16 2006
7,577,453 Wireless load balancing across bands 28 2006
7,724,704 Wireless VLAN system and method 23 2006
8,250,587 Non-persistent and persistent information setting method and system for inter-process communication 0 2006
7,873,061 System and method for aggregation and queuing in a wireless network 14 2006
8,818,322 Untethered access point mesh system and method 0 2007
8,340,110 Quality of service provisioning for wireless networks 1 2007
8,238,942 Wireless station location detection 7 2007
8,126,481 Wireless station location detection 0 2007
7,865,713 Application-aware wireless network system and method 16 2007
8,509,128 High level instruction convergence function 0 2008
8,150,357 Smoothing filter for irregular update intervals 4 2008
8,238,298 Picking an optimal channel for an access point in a wireless network 0 2008
8,161,278 System and method for distributing keys in a wireless network 8 2009
8,270,408 Identity-based networking 0 2009
8,218,449 System and method for remote monitoring in a wireless network 1 2009
8,581,790 Tuned directional antennas 0 2009
7,865,213 Tuned directional antennas 2 2009
8,116,275 System and network for wireless network monitoring 8 2010
8,670,383 System and method for aggregation and queuing in a wireless network 0 2011
8,514,827 System and network for wireless network monitoring 0 2012
8,635,444 System and method for distributing keys in a wireless network 0 2012
 
Metrologic Instruments, Inc. (19)
5,808,285 Portable code symbol reading device with one-way wireless data packet transmission link to base unit employing condition-dependent acoustical signalling for data packet reception acknowledgement 37 1994
5,979,766 Bar code symbol reading system having one-way RF signal-receiving keyboard wedge interface 13 1997
6,290,131 Optical scanner adapted for direct interfacing to a data communications network 24 1999
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6,688,527 Bar code scanning system with wireless communication links 6 2001
6,550,680 Optical scanner adapted for interfacing to a data communications network 0 2001
7,028,904 WIRELESS BAR CODE SYMBOL READING SYSTEM CAPABLE OF AUTOMATICALLY COLLECTING AND STORING SYMBOL CHARACTER DATA WHEN HAND-SUPPORTABLE UNIT IS OPERATED OUTSIDE OF ITS RF DATA COMMUNICATION RANGE, AND AUTOMATICALLY TRANSMITTING STORED SYMBOL CHARACTER DATA WHEN THE HAND-SUPPORTABLE UNIT IS OPERATED WITHIN ITS RF DATA COMMUNICATION RANGE 5 2003
7,325,740 Automatically-activated laser scanning 2D bar code symbol reading system employing a visible linear-type laser scanning pattern and an audible feedback signal during scan data capturing and buffering operations 7 2003
7,137,561 Wireless laser scanning bar code symbol reading system employing a low-battery protection circuit, vibrational alarm and sleep mode of operation 1 2003
7,281,663 Wireless bar code symbol reading system having hand-supportable unit and remote base station 6 2003
7,048,192 Wireless bar code symbol reading system employing a base station with a cradle having a hinged support hooks for enabling vertical and horizontal installations 2 2003
7,007,849 AUTOMATICALLY-ACTIVATED HAND-SUPPORTABLE 2-D BAR CODE SYMBOL READING SYSTEM EMPLOYING A LINEAR LASER SCANNING PATTERN GENERATOR, AN AUTOMATIC BAR CODE SYMBOL DATA DETECTOR, AUDIBLE DATA CAPTURE FEEDBACK GENERATOR, AND A MANUALLY-ACTIVATED DATA TRANSMISSION ACTIVATION SWITCH 6 2003
7,278,578 Automatically-activated wireless laser scanning 2D bar code symbol reading system capable of automatically transmitting stored symbol character data when the hand-supportable unit is operated within its RF data communication range and automatically collecting and storing symbol character data when the hand-supportable unit is operated outside of its RF data communication range 1 2003
7,172,126 Wireless automatic laser scanning bar code symbol reading system, wherein the RF-based transceiver chipsets within the wireless hand-supportable unit and base station thereof are automatically deactivated and said RF data communication link therebetween terminated when said system enters its power-saving sleep mode, and reactivated and re-established when re-entering its operational mode 7 2003
7,040,540 Bar code scanning system with wireless communication links 3 2003
7,111,786 Automatically-activated wireless hand-supportable laser scanning bar code symbol reading system with data transmission activation switch and automatic communication range dependent control 7 2004
7,464,878 Automatically-activated wireless hand-supportable laser scanning bar code symbol reading system with automatic communication range dependent control 3 2006
7,686,225 Wireless code symbol reading system with automatic communication range dependent control 1 2007
 
INNOVATIO IP VENTURES (15)
5,295,154 Radio frequency local area network 308 1993
5,428,636 Radio frequency local area network 164 1993
5,740,366 Communication network having a plurality of bridging nodes which transmit a beacon to terminal nodes in power saving state that it has messages awaiting delivery 145 1995
5,504,746 Radio frequency local area network 141 1995
5,940,771 Network supporting roaming, sleeping terminals 264 1995
6,374,311 Communication network having a plurality of bridging nodes which transmit a beacon to terminal nodes in power saving state that it has messages awaiting delivery 90 1998
6,046,992 Radio frequency local area network 91 1998
7,558,557 Low-power messaging in a network supporting roaming terminals 11 1999
6,826,165 Radio frequency local area network 22 2000
7,536,167 Network supporting roaming, sleeping terminals 9 2003
7,457,646 Radio frequency local area network 20 2003
7,552,246 Communication network having a plurality of bridging nodes which transmit a beacon to terminal nodes in power saving state that it has messages awaiting delivery 6 2003
7,483,397 Radio frequency local area network 6 2004
7,917,145 Radio frequency local area network 6 2008
7,873,343 Communication network terminal with sleep capability 34 2009
 
HAND HELD PRODUCTS, INC. (14)
7,717,342 Data collection device having dynamic access to multiple wireless networks 17 2006
7,874,483 Encoded information reading terminal with wireless path selection capability 19 2007
8,179,859 Roaming encoded information reading terminal 3 2008
8,638,806 Wireless mesh point portable data terminal 0 2008
8,191,785 Encoded information reading terminal operating in infrastructure mode and ad-hoc mode 1 2009
8,256,681 Data collection device having dynamic access to multiple wireless networks 4 2010
8,162,225 Data collection device having dynamic access to multiple wireless networks 0 2010
8,565,107 Terminal configurable for use within an unknown regulatory domain 0 2010
8,181,871 Encoded information reading terminal with wireless path selection capability 2 2011
8,611,309 Roaming encoded information reading terminal 0 2012
8,584,945 Encoded information reading terminal with wireless path selection capability 1 2012
8,360,319 Encoded information reading terminal operating in infrastructure more and AD-HOC mode 0 2012
8,496,181 Data collection device having dynamic access to multiple wireless networks 2 2012
8,807,431 Encoded information reading terminal with wireless path selecton capability 0 2013
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (10)
5,917,629 Transceiver for extending a CSMA/CD network for wireless communication 105 1990
5,239,673 Scheduling methods for efficient frequency reuse in a multi-cell wireless network served by a wired local area network 46 1990
5,212,806 Distributed control methods for management of migrating data stations in a wireless communications network 90 1990
5,198,918 Control method and apparatus for a wireless data link 1990
5,181,200 Handoff method and apparatus for mobile wireless workstation 204 1990
5,159,592 Network address management for a wired network supporting wireless communication to a plurality of mobile users 582 1990
5,274,841 Methods for polling mobile users in a multiple cell wireless network 60 1993
5,321,542 Control method and apparatus for wireless data link 155 1993
6,754,259 Low-cost radio frequency (RF) link for point-to-point data transfer 0 1999
6,792,479 System and method for fibre channel tracking of SCSI identifiers in known configurations 14 2001
 
INPRO II LICENSING SARL (9)
5,835,732 Miniature digital assistant having enhanced host communication 183 1993
5,634,080 Hand-held portable computer having an electroluminescent flat-panel display with pixel elements at right angles to the plane of the display and an excitation direction parallel to the plane of the display 84 1994
5,600,800 Personal computer system having a docking bay and a hand-held portable computer adapted to dock in the docking bay by a full-service parallel bus 84 1994
5,579,489 Hand-held portable computer having capability for external expansion of an internal bus 76 1994
5,590,382 Personal digital assistant module having a multi-portion keyboard with inductive coupling 25 1994
5,689,654 Digital assistant system including a host computer with a docking bay for the digital assistant wherein a heat sink is moved into contact with a docked digital assistant for cooling the digital assistant 167 1994
5,721,837 Micro-personal digital assistant including a temperature managed CPU 81 1996
5,793,957 Satellite digital assistant and host/satellite computer system wherein coupling the host and the satellite by a host interface communication system results in digital communication and synchronization of files 25 1996
6,523,079 Micropersonal digital assistant 61 2001
 
MISTAL SOFTWARE LIMITED LIABILITY COMPANY (6)
7,420,458 Secondary card reader 9 2005
7,298,264 RFID tag filtering and monitoring 11 2005
7,432,811 RFID tag filtering and monitoring 3 2006
8,072,314 Secondary card reader 2 2008
7,952,480 RFID tag filtering and monitoring 4 2008
8,258,956 RFID tag filtering and monitoring 1 2011
 
NIKE, INC. (6)
7,200,517 Monitoring activity of a user in locomotion on foot 111 2005
7,428,471 Monitoring activity of a user in locomotion on foot 17 2006
7,617,071 Monitoring activity of a user in locomotion on foot 11 2007
7,428,472 Monitoring activity of a user in locomotion on foot 17 2007
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8,712,725 Monitoring activity of a user in locomotion on foot 0 2011
 
FITSENSE TECHNOLOGY, INC. (5)
7,187,924 Intelligent data network with power management capabilities 11 2001
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7,937,121 Intelligent data network with power management capabilities 0 2008
8,150,424 Intelligent data network with power management capabilities 1 2011
8,606,338 Intelligent data network with power management capabilities 0 2012
 
TRI-COUNTY EXCELSIOR FOUNDATION (5)
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DATAQUILL LIMITED (4)
7,139,591 Hand held telecommunications and data entry device 28 2004
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INTERMEC IP CORP. (4)
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JUNIPER NETWORKS, INC. (4)
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MARSHALL FEATURE RECOGNITION, LLC (4)
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KABUSHIKI KAISHA TOSHIBA (3)
5,561,686 Radio information communication system using multi-carrier spread spectrum transmission system 23 1994
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QUALCOMM INCORPORATED (3)
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RESEARCH IN MOTION LIMITED (3)
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2201028 ONTARIO INC. (2)
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BONITA SOFTWARE, INC. (2)
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HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (2)
5,657,326 Radio based collision detection for wireless communication system 57 1994
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INTEL CORPORATION (2)
6,621,852 Spread spectrum wireless communication system 1 2001
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Mobile Aspects, Inc. (2)
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MOTOROLA, INC. (2)
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THE NIELSEN COMPANY (US), LLC (2)
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WELCH ALLYN DATA COLLECTION, INC. (2)
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BELDEN INC. (1)
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BLACKBERRY LIMITED (1)
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CHRYSLER GROUP LLC (1)
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CORDATA, INC. (BVI) (1)
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DATALOGIC MOBILE, INC. (1)
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Echelon Corporation (1)
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FACEBOOK, INC. (1)
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FLORIDA STATE UNIVERSITY RESEARCH FOUNDATION (1)
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FUJI JUKOGYO KABUSHIKI KAISHA (1)
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MOBILE ASPECTS (1)
8,547,203 Dynamic control containment unit 0 2011
 
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6,161,207 Communications unit and method of communicating having efficient packet acknowledgement 33 1996
 
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5,430,775 Method and apparatus for a radio communication system 13 1994
 
NEC CORPORATION (1)
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ORATIVE CORPORATION (1)
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TECHNIKU INCORPORATED (1)
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TELXON CORPORATION (1)
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TRAPEZE NETWORKS (1)
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UBIQUISYS LIMITED (1)
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Other [Check patent profile for assignment information] (3)
5,978,772 Merchandise checkout system 81 1997
8,306,005 Dynamic communication and method of use 0 2011
8,605,700 Dynamic communication and method of use 0 2012