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A self defense weapon formed as a memo pad and which is easily held by a person's fingers, therefore making it possible to provide protection from a mugger and also to quickly and easily write a record or a message without failure of missing or forgetting significant information under a stressful situation.
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| Number | Title | Issue Date |
| 8178994 | Selective phase coupler Disclosed is an apparatus and method for communicating over an electrically conductive line having a plurality of power line phases between a first device having a single receiver and plurality of distal devices. The power line phases are adapted to deliver an alter... | 05/15/2012 |
| 8174145 | Power supply and communications system for a passenger aircarft The invention relates to a combined supply and communications system for transferring data between a data server and at least one of several terminal devices over a power supply cable wherein the data server and each of the several terminal devices are each connecte... | 05/08/2012 |
| 8169103 | Data-ready power mains distribution panel and data coupler A power mains distribution panel including a data signal coupler providing a data path across multiple circuits therein. The power mains distribution or breaker panel provides mains power distribution from multiple non-neutral (i.e. having a voltage and providing a ... | 05/01/2012 |
| 8138622 | System and method for an AC powered downhole gauge with capacitive coupling Borehole instruments are powered by AC instrument power transmitted on all three phases of a power cable concurrently carrying three phase motor power, the instrument power transmitted at a multiple of the motor power frequency and having a corresponding fraction of... | 03/20/2012 |
| 8138623 | Integrated circuit with supply line intra-chip clock interface and methods for use therewith An integrated circuit includes a first circuit and a first power supply line for powering the first circuit. A first intra-chip clock interface generates a first clock signal on the first power supply line. A second power supply line is coupled to the first power su... | 03/20/2012 |
| 8097973 | Power mains transformer data bridge A circuit and system having an inductive data link from one or more user-side phases to a plurality of line-side phases by individual data transformers having a winding coupled to the particular phase by a high-permeability ferrite material. The resulting connection... | 01/17/2012 |
| 8093745 | Sensing current flowing through a power line There is provided a method for measuring a parameter of a power frequency current being carried by a power line. The method that includes (a) transducing a power frequency current flowing through a power line, into a power frequency voltage, via an inductive coupler... | 01/10/2012 |
| 8026628 | Systems and methods for electricity metering In one aspect, the invention comprises a system comprising: a master data clock source; one or more transponders; and a plurality of remote power line transceivers; wherein all of said plurality of transceivers are connected to a common alternating current power dis... | 09/27/2011 |
| 8008799 | Integrated circuit with supply line intra-chip clock interface and methods for use therewith An integrated circuit includes a first circuit and a plurality of first power supply lines for providing a first power to the first circuit. A first intra-chip clock interface generates a first clock signal on the first power supply lines. A plurality of second powe... | 08/30/2011 |
| 7923856 | Low voltage control interface coupler for multipulse transmitter A method for causing, in a power distribution network, an oscillation allowing data to be transmitted, includes connecting at least one capacitive load in series with a modulation circuit between two wires of the network. The amplitude modulation circuit includes at... | 04/12/2011 |
| 7880324 | Transmitter with a remote unit in an electric net data transmission system A transmitter for sending a data transmission signal to an f electric net, whereby the apparatus comprises signal-shaping and adjustment devices (3) and connecting devices (50) including necessary accessories for connection to the electric net, signal ... | 02/01/2011 |
| 7839011 | Method and apparatus for signal transmission with isolation in medical devices An apparatus and method for signal transmission with isolation in medical devices. Data signals, such as patient measurement data and medical instrumentation control signals are converted to dynamic signals which are transmitted on power lines through an isolation m... | 11/23/2010 |
| 7839012 | Power line transmission A device including an element for receiving an electrical signal comprising a high-frequency data signal component and a low-frequency power supply component. The electrical signal is conveyed in an electrical cable of an electrical installation. The device further ... | 11/23/2010 |
| 7825533 | Transmission system for interchanging information data between an electrical load and an upstream converter A transmission system for exchanging information data between an electric load having an emitter and a converter having a receiver is disclosed. The converter and the load are connected by a multi-phase supply cable which is connected to a sinus filter having in-lin... | 11/02/2010 |
| 7816803 | Power line control system A system and method for processing data includes coupling circuitry for connecting a system to a power line and receiving data from the power line, packet detection circuitry for detecting synch mark in the data, and a processor for processing data upon detecting a ... | 10/19/2010 |
| 7791215 | Intra-bundle power line carrier current system A system including associated equipment for transmitting radio-frequency power line carrier signals on high voltage ac or dc transmission lines within a multi-conductor bundle, one path for which is provided by one or more conductors located at the center of the bun... | 09/07/2010 |
| 7737574 | Terminating device for installation at a termination of a power line usable for power line communication A terminating device enables power line communication to be performed while suppressing degradation of the communication quality without decreasing the communication efficiency. The terminating device includes power supply plugs, a terminating circuit, a changeover ... | 06/15/2010 |
| 7675190 | Assembly for transmitting information via a low-voltage power supply network A coupling apparatus for facilitating communications of data signals over a low voltage electric power network is provided. In one embodiment, the apparatus includes a mains terminal configured to be connected to a low voltage electric power network carrying alterna... | 03/09/2010 |
| 7602078 | Combinational power cord for multimedia use A combinational power cord for multimedia use includes one or more multimedia power devices mutually connected to provide power and to enable data transmission among different multimedia devices. The combinational power cord is extensible by connecting a plurality o... | 10/13/2009 |
| 7456516 | Power line terminating circuit and method, and power line relay device The present invention provides a power line terminating circuit and method and a power line relay device for setting indoor power lines to a state adapted to communications by making impedances match each other irrespective of a device connected, thereby enabling no... | 11/25/2008 |
| 7369579 | Method and system for timing controlled signal transmission in a point to multipoint power line communications system Power line communication (“PLC”) signals are transmitted between a head-end PLC transceiver coupled to multiple remote PLC transceivers over a electric power and communications distribution network in accordance with a timing controlled PLC data frame which dete... | 05/06/2008 |
| 7362931 | Optical conversion device for shared FTTH distribution network An optical conversion device for a shared FTTH distribution network including first and second optical fibers and an optical processing circuit. The optical processing circuit has an input for receiving a first optical analog signal carried by the first optical fibe... | 04/22/2008 |
| 7358626 | Two-wire power and communications for irrigation systems A large number of irrigation system devices connected to a common two-wire cable can be powered and individually controlled from a central location by transmitting over the cable DC pulses of alternating polarity. Control information is conveyed by transmitting a co... | 04/15/2008 |
| 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 |
| 7319280 | Power line coupler adapted for use with multiple communication systems using different frequency spectra Devices and system for interfacing multiple power line communications (PLC)-enabled communication devices in a building are disclosed. In various embodiments, the system can include a high-frequency transformer coupled to a high-frequency communications device, a lo... | 01/15/2008 |
| 7307357 | Method and system to increase the throughput of a communications system that uses an electrical power distribution system as a communications pathway A method and system to increase the throughput of a communications system that uses an electrical power distribution system as a communications pathway, determines the phase of the power distribution power cycle and compares this determined phase to predetermined re... | 12/11/2007 |
| 7302184 | Data communication system A data communication system comprising a terminal unit for generating light signals responsive to status of switches and a control unit for receiving the signals spatially propagated and controlling operation of a predetermined load, wherein switches 11 and | 11/27/2007 |
| 7301440 | Power line communication system and method The present invention provides a device for providing communications through power lines comprised of multiple conductors by transmitting the data signals through a plurality of the conductors. One embodiment of the present invention may be comprised of a transmit c... | 11/27/2007 |
| 7291938 | Power supply apparatus and method based on parasitic power extraction Power supply apparatus and method based on parasitic power extraction is disclosed. Power is extracted from signals that are inbound and/or outbound from an equipment. The extracted power is converted to dc voltages for a device associated with the equipment. The po... | 11/06/2007 |
| 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 |
| 7286026 | Serial signal injection using capacitive and transformer couplings for power line communications A coupling network has a first power line interface port and a power line modem interface configured to be coupled to a power line modem transceiver. An inductor-capacitor circuit coupled to the power line modem interface has a low-impedance resonant frequency at a ... | 10/23/2007 |
| 7277675 | Array for the contact-less transmission of electrical signals or energy The invention is characterized by the provisions that each transmitter comprises an AC voltage or current source, respectively, as well as a plurality of inductive coupling elements supplied from said source, which elements are supplemented by at least one capacitor... | 10/02/2007 |
| 7262695 | Network interface device An apparatus is disclosed that provides a gateway function. The apparatus has an enclosure surrounding a network interface device. The network interface device has a communications network interface to a communications network and a power line network interface to a... | 08/28/2007 |
| 7259482 | Distance extender and method making use of same A distance extender (100, 200) for increasing a distance between a first device (145) and a second device (150) in electrical communication with the first device includes an electrical cable (130, 230) electrically coupled between the fir... | 08/21/2007 |
| 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 |
| 7218170 | Multi-pole current mirror filter A current mirror with selectable filter poles provides a selected low pass filtering function to a DC bias signal generated by the current mirror. Coupled between a first MOSFET and second MOSFET of the current mirror, a low pass filter with selectable filter poles ... | 05/15/2007 |
| 7218219 | Data communication over a power line Data signals are communicated between a power line and a computer, wherein the power line provides power to the computer via a distribution transformer and the computer is in communication with a wireless communication path. A first data signal is communicated with ... | 05/15/2007 |
| 7209719 | Home power line network connected phone The present invention is directed to a cellular or cordless phone whereby power line networking is either integrated within its base station and/or charger or added as a module that can be installed into the base station and/or charger, providing a method of transfe... | 04/24/2007 |
| 7199699 | Facilitating communication with power line communication devices The invention includes a method, system, and device for communicating a data signal with a low voltage premise network. The inventive method comprises communicating the data signal with the low voltage premise network, substantially reducing attenuation of the data ... | 04/03/2007 |
| 7187276 | Power line communication system and method of using the same The fiber optic isolator of the present invention transports data signals between high voltage power lines and a communications interface device, bypassing a step down transformer to low voltage power. The communication interface device includes a low voltage power ... | 03/06/2007 |
