"What can be more palpably absurd than the prospect held out of locomotives traveling twice as fast as stagecoaches?"
The Quarterly Review ; March edition, 1825
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| Number | Title | Issue Date |
| 7414518 | Power line communication device and method A signal is received from a first portion of a power line via a connection to the power line and at least a portion of the signal is converted to a non-electrically conducting signal. The non-electrically conducting signal may be communicated to a non-electrically c... | 08/19/2008 |
| 7378952 | Systems and devices for broadband communication with an alarm panel A communications system for an alarm panel including: an alarm panel adaptor in operable communication with the alarm panel generating analog alarm signals; a first powerline communications device in operable communication with a the alarm panel adaptor converting t... | 05/27/2008 |
| 7364651 | Remotely controllable outlet for water treatment system A remote control system for providing control of an under-counter water treatment system and garbage disposal. The system includes a remote unit that is electrically connected to an existing switched, under-counter AC power outlet. The garbage disposal and water tre... | 04/29/2008 |
| 7352282 | Communication system A communication system includes a power line, a plurality of PLC networks connected to the power line in common, and an electronic control unit for controlling an electric equipment, connected to the power line between the PLC networks. The electronic control unit i... | 04/01/2008 |
| 7339458 | Power line communications interface and surge protector There is provided a system that includes an AC power input port for connection to an AC power line, an AC power output port for providing power from the AC power line, an AC power surge suppression circuit for limiting voltage at the AC power output port, a data por... | 03/04/2008 |
| 7336156 | Communication apparatus, communication method and installation method of railway vehicle-facility intra communication system A communication apparatus installed in the trains and that in a complex station building, a station or a maintenance factory communication through feeders, trolley wires or third rails can communicate each other. The present invention can realize a low cost vehicle-... | 02/26/2008 |
| 7330129 | System and method for data retrieval in AC power tools via an AC line cord An apparatus and method for obtaining data stored in an electronic module within a power tool over a power line cord of the tool, and without any disassembly of the tool being required. An interface subsystem applies a high frequency, low power AC input signal to th... | 02/12/2008 |
| 7327274 | Programmable panel schedule The programmable panel schedule is an apparatus for monitoring and modifying electrical circuits. The programmable panel schedule can eliminate the need to rely on paper schedules and permit a building engineer to instantly assess any monitored circuit for changes, ... | 02/05/2008 |
| 7327222 | Transmission system for transmitting data via current conducting branches A system and method for transmitting and receiving data between a power supply and a remotely located load, by use of standard data communication cable has functional data transmitted via the power line of such data communication cable in order to decrease the numbe... | 02/05/2008 |
| 7323968 | Cross-phase adapter for powerline communications (PLC) network An adapter to reduce the effects of cross phase communication between a PLC transmitter plugged into one of the L1 or L2 power lines of a home and a PLC receiver plugged into the opposite L2 or L1 power line includes a housing with one si... | 01/29/2008 |
| 7312694 | Capacitive couplers and methods for communicating data over an electrical power delivery system Capacitive couplers and methods for communicating data over an electrical power delivery system are disclosed. A device for coupling a signal onto a conductor of an electrical power delivery system includes a conductive member having a length of at least six inches ... | 12/25/2007 |
| 7307511 | Power line communication system and method The last portion of the electrical distribution system is used to provide high-speed communications to residential homes. An aggregation point interfaces a medium voltage power line with a point-of-presence, and a power line bridge enables flow of communications sig... | 12/11/2007 |
| 7290067 | Information processing apparatus control method for external device having both a wire interface and a wireless interface settings An information processing apparatus which makes it easier to carry out setting of a wireless interface necessary for enabling a device or apparatus to be used via the wireless interface, using a wire interface. An information processing apparatus carries out first c... | 10/30/2007 |
| 7286044 | Power line communication device for vehicle A power line communication device for a vehicle is provided with an internal electronic control unit connected to a connection point on a power line, which communicates with an external electronic control unit by a communication signal superimposed on a supply volta... | 10/23/2007 |
| 7280033 | Surface wave power line communications system and method The present invention provides a system for operating a power line communications system that employs surface wave communications and conducted communications. The system is comprised of a plurality of network elements, which may take the form of repeaters, communic... | 10/09/2007 |
| 7268670 | Power line communications system A power line communications technique (PLC) is disclosed which allows communications across any three phase electric system by modulating the impedance through earth between any two points of differing voltage on the electrical system in order to use the power suppl... | 09/11/2007 |
| 7259657 | Multi-subnet power line communications system and method A system that includes low voltage power line subnet coupler that provides bi-directional communications between multiple power line subnets while substantially preventing the flow of power is provided. The system may include a power line communications device coupl... | 08/21/2007 |
| 7257644 | Systems and methods for providing presence tracking in a distributed computing system Providing presence tracking of nodes of a logical network in a distributed computing system. Each node in a logical network tracks the presence of all other nodes on the network. This presence information is used by the protocol to optimize bandwidth utilization of ... | 08/14/2007 |
| 7250848 | Power line communication apparatus and method of using the same The present invention provides a communication device for use with a power line communication system. One embodiment of the present invention forms a bypass device and comprises a LV coupler, a LV signal conditioner, a controller, a MV modem, a first MV signal condi... | 07/31/2007 |
| 7248178 | RF communication with downhole equipment Data or control signals are communicated over a three phase power cable supplying power from a surface location to a motor/pump assembly located within a wellbore utilizing modulated radio frequency signals. The radio frequency signals may be impressed on the power ... | 07/24/2007 |
| 7245212 | Power line communication apparatus and method of using the same A communication device for use with a power line communication system is provided. One embodiment forms a bypass device and comprises a low voltage coupler, a low voltage signal conditioner, a controller, a medium voltage modem, a first medium signal conditioner, an... | 07/17/2007 |
| 7236765 | Data communication over power lines A system for receiving and processing signals received from a plurality of endpoints. Each endpoint includes an endpoint transmitter in electrical communication with a power distribution line within a power distribution system. The system comprises a power line coup... | 06/26/2007 |
| 7227462 | Extremely fast polling method for determining the presence of individual electric meters on a power line A “super-fast” polling method for electrical meters for outage detection. In response to a query, a large group of electric meters (M) all simultaneously transmit reply signals over an electrical distribution network using TWACS®. The signals are separated by a... | 06/05/2007 |
| 7224272 | Power line repeater system and method A PLCS network element that provides communications to one or more user devices and may also repeat data for other network elements is provided. In one embodiment, the device includes software for discovering its upstream gateway, for acting as a gateway for other d... | 05/29/2007 |
| 7215240 | Noncontacting short-range communication device for slide door A noncontacting short-range communication device for a slide door for excellently performing bidirectional data communication by electromagnetic induction coupling between the side of a vehicle body and the side of the slide door is provided. Data are transmitted an... | 05/08/2007 |
| 7212101 | Device for broadband electrical signal and/or energy transmission using a transmission system including couplers An arrangement for broadband signal and/or energy transmission, between at least two units is disclosed. Said units may be displaced relative to each other along a track. Said arrangement comprises a first unit, which has a symmetrical open circuit arrangement with ... | 05/01/2007 |
| 7198521 | Power line phase coupler system A power line phase coupler system for repeating data signals between power line phases that can be easily installed by a user. The power line phase coupler system includes a housing, a female connector positioned within the housing, a male connector electrically con... | 04/03/2007 |
| 7193506 | Method and system for maximizing data throughput rate in a power line communications system by modifying payload symbol length Data throughput rate in a power line communications (“PLC”) system is controlled by generating PLC carrier signals in accordance with a PLC signal frame structure containing payload symbols where the payload symbol length is selected based on at least one of a P... | 03/20/2007 |
| 7191269 | Method for multiple sensors to communicate on a uni-directional bus The present invention provides a system of and a method for multiple transmitters to communicate data over a single uni-directional communication bus. In one form of the present invention, a data communication system using time-domain multiplexing includes a uni-dir... | 03/13/2007 |
| 7190267 | System and method for managing power control and data communication among devices A system for managing devices comprises a first device comprising a first interface and a second device comprising a second interface. The second interface is coupled to the first interface using a communication cable that comprises both power wires and data wires. ... | 03/13/2007 |
| 7183902 | Very local area network (VLAN) A Very Local Area Network (VLAN) comprises a power strip device having an electrical connector for connection to an AC power supply line and one or more surge protectors and line filters. Multiple electrical power outlet sockets receive plugs from electrical applian... | 02/27/2007 |
| 7176785 | Device control system While a general-purpose interface circuit and another general-purpose interface circuit are provided so as to transmit/receive data between a host appliance and a device appliance, when the general-purpose interface of the device appliance happens to hang up, a cont... | 02/13/2007 |
| 7170394 | Remote current sensing and communication over single pair of power feed wires Disclosed is a novel technique for transferring power and signals between two electrical devices over a single wire pair. In particular, a remote sensor is connected to a host device. Power to the remote sensor is supplied through a voltage reference and control loo... | 01/30/2007 |
| 7167081 | Communication module and process for networking within and between powered communication devices over a multi-phase power distribution system or subsystem This invention allows the communication of mission critical data to devices that communicate within the same, or a separately connected, power distribution system. Devices operate by being connected to a power distribution system, subsystem, and or different but con... | 01/23/2007 |
| 7154382 | Arrangement of inductive couplers for data communication There is provided a system including (a) a first inductive coupler for coupling a data signal between a port of the first inductive coupler and a first subset of a plurality of electrically parallel conductors, and (b) a second inductive coupler for coupling the dat... | 12/26/2006 |
| 7154381 | System and method for operating a sensed power device over data wiring According to the present invention, a power source delivers power to a networked device over network cabling (e.g., Ethernet cabling) in one of two modes: a low power mode and a high power mode. The power source begins delivering power at a low power level in the lo... | 12/26/2006 |
| 7135982 | Home network system and control method for the same A home network system and a control method thereof in which an electric home appliance periodically transmits an alive message through a network to inform that it is in operation, and a home server transmits/receives messages to/from the electric home appliance via ... | 11/14/2006 |
| 7129823 | Communications setting method and communications setting system for power line communications system A communications setting method for a communications network system for performing data communications among a plurality of devices through power line has a house code notification including a house code to be uniquely set for the communications network syste... | 10/31/2006 |
| 7124184 | Home networking system having alive and connection termination messages and method for operating same A home network system for controlling one or more home appliances connected to a network and a method for operating the same. If an alive message or a connection termination message is normally generated from the home appliance, or if the alive message or the connec... | 10/17/2006 |
| 7119678 | Wireless light sensor input to a security system The present invention relates to a system and method for the wireless light sensor input to a security system, wherein the light sensed by the light sensor is used to determine the activation and deactivation state of the security system. The system and method deter... | 10/10/2006 |