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7626497 |
Power line communication vegetation management system and method
A system for detecting the contact of vegetation or other objects with a power line conductor and that may provide an automated notification thereof is provided. In one embodiment, the system may...
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7579944 |
Information provision system and terminal for same and program for same
An information provision system of the present disclosure stores a current vehicle condition and a normal unattended condition of the vehicle as relevant information in a driver's unit, when a...
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7529300 |
Shaped-offset quadrature amplitude modulation methods and apparatus
Shaped Offset Quadrature Amplitude Modulation (QAM) can be implemented within a communication system. A train or sequence of orthogonal sinc pulses can be generated for each of the in-phase and...
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7518487 |
Power line communication system
Communication apparatus, comprising: a network of power lines; and first, second and third transceivers, coupled to the network, the first transceiver being adapted to transmit a first signal over...
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7498934 |
Power supply and useful data exchange between a fire alarm control unit and a current sink
A method, system and circuit arrangement exchange data and supply power to at least one current sink connected via at least one data line pair to a fire alarm control unit. A pulsed voltage is used...
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7382232 |
Power line communications device and method of use
A device and method for providing power line communications via an underground residential distribution power system is provided. One embodiment of the present invention includes a power line...
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7366773 |
Alternative communications paths for data sent over power line carrier
Extensions to the concept of using a power line carrier to convey a data record from the secondary side of a first transformer to a receiver in a power distribution substation include receiving the...
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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...
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7319384 |
Communication apparatus and communication method
A communication apparatus includes a transmission signal generation section 1 , a transmission signal control section 2 , a transmission section 3 , a leakage electric power detection section 4...
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7304567 |
Method and apparatus for communicating control and other information over a power bus
An information signal to be communicated to a roof-mounted light bar or other electrical or electronic device travels over the vehicle's or other environment's power bus or other power conductor....
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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...
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7199706 |
PLC intercom/monitor
A digital intercom device consistent with certain embodiments uses power line communication (PLC). A power line interface connects to a power line serving as a communication medium. An audio codec...
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7180412 |
Power line communication system having time server
A system for bi-directional power distribution line communication. The system is configured for data communication with an endpoint transceiver located at a customer premise. The system comprises a...
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7170405 |
Method and apparatus for interfacing a power line carrier and an appliance
A method and apparatus for communicating between an appliance and a power line carrier communication system includes at least one power line carrier connection, at least one appliance connection,...
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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...
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7167089 |
Burglar alarm using power cord to transmit signals and method for controlling the same
A burglar alarm includes a main unit provided with a power supply voltage regulator circuit, a CPU circuit, an FET driving circuit, and an RLC oscillation circuit to convert digital code signals...
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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....
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7129820 |
Door station apparatus with electric lock
The respective sections between a power source unit 4 and a room master station 1 , between the room master station 1 and an entrance door station 2 , and between the entrance door station 2...
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7123140 |
Network for remote administration of street lighting inter alia and methods to carry out said administration
A wireless network for remotely controlling at least one lamp includes a first radio transceiver associated with the at least one lamp and a second radio transceiver. The first radio transceiver...
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7113075 |
Power supply methods and apparatus
A detection circuit includes a first power line, a first signal conditioning module operationally coupled to the first power line, a neutral line (N) operationally coupled to the first signal...
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7053765 |
Active security system
A system and method is disclosed for actively maintaining security of a premises. The method can include the operation of establishing a data link between a local security controller within the...
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7030761 |
Multi-resolution object location system and method
A multi-resolution object location system and method for locating objects is provided. The multi-resolution system and method uses a long-range object locator together with a more precise RFID...
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7026947 |
Building emergency path finding systems and method
Signals from a plurality of detectors are evaluated to establish an ingress or an egress path or paths to and from a region. Where the detectors indicate flame or smoke concentrations, the ingress...
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7012505 |
Method and system for communication on a power distribution line
A method and system of communicating on an active power distribution line using numerous asynchronous data transmitters. Data is modulated onto 5 KHz carrier signals of narrow bandwidth whose...
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6906638 |
Sensor unit
A sensor unit ( 9 ) for measuring a process magnitude and for producing a digital signal representative of the process magnitude exhibits an interface ( 3 ) for transmitting the digital signal in a...
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6901336 |
Method and apparatus for supplying power, and channeling analog measurement and communication signals over single pair of wires
A novel technique for transferring power, measurement signals, and communication signals between two electrical devices over a single wire pair is presented. A host device supplies power to a...
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6831551 |
Method and system for modulating a carrier frequency to support nondestructive bitwise arbitration of a communication medium
A system for modulating a carrier frequency to support nondestructive bitwise arbitration of a communication medium. The system comprises a first sensor module coupled to a power supply line via a...
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6822555 |
Fire system implemented with power line communications
An electric power line communication system operates with an electric power distribution system to provide through premises power distribution lines highly reliable communication links among...
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6608555 |
Vehicle security system
A vehicle security system includes a detector circuit cluster, an alarm circuit cluster and a host device, all connected to a common power supply line. The detector circuit cluster includes a...
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6590384 |
Method of communicating with a built-in sensor, in particular a rotational speed sensor
The method allows communication with a built-in sensor, in particular a rotational speed sensor, which supplies successive signal pulses as output signal. The sensor is preferably built into a...
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6587037 |
Method for multi-phase data communications and control over an ESP power cable
A three phase power cable is employed to transmit data encoded in a phase-to-phase manner within a high frequency carrier signal transmitted simultaneously with power transmitted from surface...
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6448899 |
Power indicating ethernet outlet and method therefor
A telecommunications outlet with a visual indicator that informs a user that the outlet is capable of supplying power to a network device in a network system compliant with IEEE 802.3. The outlet...
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6441723 |
Highly reliable power line communications system
An electric power line communication system operates with an electric power distribution system to provide through premises power distribution lines highly reliable communication links among...
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6369699 |
Single-cable transmission device for signals and power supply of a surveillance system
The present invention provides a single-cable transmission device for signals and a power supply of a surveillance system, which only requires a single cable to transmit various signals and a power...
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6326884 |
Method of transmitting data between a small electric appliance and a supplementary electric appliance connectible therewith, as well as appliances suitably configured for this purpose
The apparatus includes a method of transmitting data between a small electric appliance such as an electric hair cutting apparatus, an electric toothbrush or a household appliance, and a...
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6320494 |
Full duplex communication system with power transfer on one pair of conductors
A local station and a remote station are connected by a single pair of conductors. The local station communicates with the remote station by modulating a power supply within the local station which...
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6320502 |
Method and apparatus for transmitting data between a position measuring system and an evaluation unit
A method for transmitting data between a position measuring system and an evaluating unit that includes the steps of generating a system-specific parameter, transmitting the system specific...
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6278357 |
Apparatus and method for implementing digital communications on a power line
An apparatus to establish bi-directional digital communication over a power line network includes a signal launching circuit to impose a digital communication signal onto a power signal carried by...
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6266545 |
Transferring data in a fixed-site radio transceiver station by modulating power supply current
In a fixed-site radio transceiver station, information about a tower-mounted radio frequency amplifier apparatus can be automatically transferred from the tower-mounted radio frequency amplifier...
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6249213 |
Method for transmitting information over an alternating current power line through a plurality of frequency orthogonal subchannels
One embodiment of the present invention is a method for transmitting information over an AC power line. A frequency channel for transmitting the information is selected and divided into a plurality...
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6101214 |
Power line communications spread spectrum symbol timing and random phasing
A system for spread spectrum power line communications employs a harmonic modulation (HM) transmitter coupled to the power line for transmitting message bits to an HM receiver. The spread spectrum...
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6097280 |
Fault locator that uses positive-phase-sequence electricity
A fault locator of a parallel transmission line includes a data receiving unit that receives the transmission and the received signal of each current differential relay provided with the...
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6005477 |
Method and apparatus for information transmission via power supply lines
A method and a system for rapid and interference-free data communication via power supply networks at any voltage levels. The combined effects of interference from signal distortion,...
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5903594 |
Power line communications spread spectrum protocol
A spread spectrum protocol in a power line communication (PLC) system uses Harmonic Modulation (HM) as true spread spectrum modulation made up of a plurality of modulated tones spaced in frequency...
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5652755 |
Printer interface system
Monitor (11) includes a microcontroller (51) programmed in a first mode of operation to drive various loads (59), (69) which operate to perform tests on patient samples. The results of the tests...
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5635895 |
Remote power cost display system
A remote electrical power meter display system for indicating to a consumer the actual costs associated with electrical power use includes two units: a wattmeter/transmitter for detecting...
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5539375 |
Apparatus for transmitting instrumentation signals over power conductors
A downhole instrumentation system comprises one or more transducers coupled in a DC current circuit between the star point of an electrical submersible pump and the chassis. A sensing circuit...
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5452344 |
Communication over power lines
The present invention describes an FSK carrier communication systems for transmitting and receiving data on a electric utility line even in the presence of extreme noise. The present invention uses...
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5198810 |
One-way data telemetering system utilizing the power supply mains
A data telemetering system includes a plurality of remote transmitter units connected via an alternating current power supply mains to a central receiver. Each cycle of the line voltage is divided...
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5084868 |
Common bus multinode sensor system
The present invention is a multimode sensor system that transmits power down a common bus coaxial cable typically using an alternating current power source. Each remote unit connected to the...
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