Class / Patent application number | Description | Number of patent applications / Date published |
307002000 | AC and DC sources | 31 |
20080315682 | Powered device for power over ethernet system with increased cable length - A Powered Device (PD) in a Power Over Ethernet system that supports increased cable lengths of more than 100 m is provided herein. The proposed PD design requires no modifications at the PSE side. Embodiments include example modifications of IEEE 802.3af PD system rules, including example modifications of PD classification and port voltage ranges to enable increased cable length PoE. | 12-25-2008 |
20090091182 | IMAGE FORMATION APPARATUS CAPABLE OF RECEIVING POWER FROM A PLURALITY OF POWER SOURCES AND CONTROL METHOD PERFORMED IN SUCH IMAGE FORMATION APPARATUS - A power supply unit selects one of drive power provided from an AC/DC conversion unit and that provided from a separation unit and outputs the selected drive power to a control unit and a transmission and reception unit continuously. If the AC/DC conversion unit and the separation unit both supply their respective drive powers, the drive power that has a higher voltage value, i.e., the first drive power, is selectively output. When the first drive power supplied is stopped, a diode transitions from the on state to the off state and a diode transitions from the off state to the on state. As a result the second drive power is selectively output. | 04-09-2009 |
20090189442 | Systems and methods for powering circuits for a communications interface - Embodiments include systems and methods of powering data communications transmitter circuitry using current sinked from biasing circuitry used to bias a transmission line between the data communications transmitter circuitry and data communications receiver circuitry. In some embodiments, the current sinked from the biasing circuitry is sourced by a power supply configured to power the data communications receiver circuitry. The current sinked from the biasing circuitry is then re-used to power the data communications transmitter circuitry. The data communications transmitter circuitry can be operated using less power overall than the prior art by re-using the current first used to bias the transmission line to power the data communications transmitter circuitry. Various embodiments include HDMI transceivers, DVI transceivers, and DisplayPort transceivers. | 07-30-2009 |
20090195065 | 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 power supply lines are coupled to the plurality of first power supply lines and further couple a second power to the second circuit. A second intra-chip clock interface recovers the first clock signal from the second power supply lines. The second circuit operates based on the first clock signal. | 08-06-2009 |
20100026086 | TWO-WIRE ADDRESSING SCHEME - A two-wire communications system is disclosed. The disclosed communications system uses a distributed power line and a distributed common line to transmit messages. A power transistor is operated to transmit either a logical high or a logical low using the two signal lines. | 02-04-2010 |
20100078992 | CIRCUIT DEVICE AND METHOD OF CURRENT LIMIT-BASED DISCONNECT DETECTION - In a particular embodiment, a power sourcing equipment (PSE) device includes at least one network port adapted to couple to a powered device to provide power and optionally data to the powered device via a network cable. The PSE device further includes a current limiter circuit coupled to the at least one network port and having an adjustable threshold. The PSE device also includes a logic circuit coupled to the current limiter circuit and adapted to reduce the adjustable threshold of the current limiter circuit to have a threshold level that is below a nominal operating current level. After a period of time has elapsed during which the current limiter circuit is not activated, the logic circuit is adapted to determine that the powered device is disconnected from the at least one network port. | 04-01-2010 |
20110140511 | ELECTRIC POWER TRANSMISSION SYSTEM FOR WIND TURBINE AND WIND TURBINE FARM AND METHOD FOR OPERATING SAME - A method of operating a wind turbine includes energizing at least a portion of a power conversion assembly via an alternating current (AC) power source. The method also includes converting AC power to direct current (DC) power having a DC component and an AC component via the power conversion assembly. The method further includes transmitting the DC component and the AC component through a DC power transmission line. The method also includes separating the DC component from the AC component. The method further includes transmitting the AC component to at least one wind turbine electrical device. | 06-16-2011 |
20120181853 | SIMULTANEOUS DISTRIBUTION OF AC AND DC POWER - A system and method for the transport and distribution of both AC (alternating current) power and DC (direct current) power over wiring infrastructure normally used for distributing AC power only, for example, residential and/or commercial buildings' electrical wires is disclosed and taught. The system and method permits the combining of AC and DC power sources and the simultaneous distribution of the resulting power over the same wiring. At the utilization site a complementary device permits the separation of the DC power from the AC power and their reconstruction, for use in conventional AC-only and DC-only devices. | 07-19-2012 |
20120248863 | Safety Mechanisms, Wake Up and Shutdown Methods in Distributed Power Installations - A distributed power system including multiple DC power sources and multiple power modules. The power modules include inputs coupled respectively to the DC power sources and outputs coupled in series to form a serial string. An inverter is coupled to the serial string. The inverter converts power input from the serial string to output power. A signaling mechanism between the inverter and the power module is adapted for controlling operation of the power modules. | 10-04-2012 |
20120280563 | TIME-DOMAIN MULTIPLEXING OF POWER AND DATA - Circuits, methods, and apparatus that may allow an electronic device to control a power adapter. One example may provide an electronic system where an electronic device may control a power adapter through a communication channel. Data transferred in the communication channel may include the temperature of the power adapter, the charging capability of the adapter, and other types of data. In one example, power and data may share the same two wires, and the power and data may be time-division multiplexed. That is, the two wires may convey power and data at different times. Another example may include circuitry to detect a connection between the electronic device and the power adapter. Once a connection is detected, power may be transferred from the power adapter to the electronic device. This power transfer may be interrupted on occasion to transfer data between the power adapter to the electronic device. | 11-08-2012 |
20130026820 | ANTENNA APPARATUS AND WIRELESS COMMUNICATION APPARATUS - According to one embodiment, an antenna apparatus comprises a leaky coaxial cable, an superposing circuit, a separation circuit, a terminator and an electrical apparatus. The superposing circuit configured to superpose a high frequency signal with a direct-current voltage and supply a transmission signal as the superposition result to the first end of the leaky coaxial cable. The separation circuit that is connected with the second end of the leaky coaxial cable and separates the high frequency signal and the direct-current voltage from the transmission signal transmitted through the leaky coaxial cable. The terminator configured to terminate the high frequency signal separated by the separation circuit. The electrical apparatus that is arranged nearby the second end of the leaky coaxial cable and is actuated by the direct-current voltage separated by the separation circuit. | 01-31-2013 |
20130026821 | DEVICE AND METHOD FOR CONNECTING AN ENERGY-CONVERTING TERMINAL - A device for connecting an energy-converting terminal to an electric power supply network and for exchanging data via the power supply network, a network connection for connecting to the power supply network, a communications unit for receiving and sending data over the power supply network, a logic unit for controlling the data exchange and for controlling or regulating the power of the energy-converting terminal, sensors and an associated signal processing unit for monitoring the energy-converting terminal, as well as a power section for controlling the energy flow to the energy-converting terminal are provided. The network connection, the communications unit, the logic unit, a sensor unit having sensors and the signal processing unit associated with the sensors and the power section are combined in an application-specific integrated circuit (ASIC). A corresponding method is also described. | 01-31-2013 |
20130134774 | HIGH BANDWIDTH DATA TRANSPORT SYSTEM FOR USE IN A SMARTGRID - A method for controlling electricity usage in at least one building through a jack device to a power consuming device includes passing electric power from a powerline and through the jack device to the power consuming device, sensing characteristics of electricity being consumed by the power consuming device using the jack device, sending messages from the jack device about the characteristics of the electricity being consumed, and receiving messages to control the passing of the electric power through the jack device to the power consuming device. The jack device may use a pulse based protocol in sending the messages and receiving the messages through the powerline. | 05-30-2013 |
20130200689 | POWER LINE COMMUNICATION APPARATUS AND METHOD, AND LOAD POWER MONITORING APPARATUS AND METHOD USING SAME - A load power monitoring apparatus and method use a power line communication apparatus and method. The power line communication apparatus is capable of performing power line communication through a simple circuit structure by loading a data signal on a current signal supplied over the power line. The power line communication apparatus includes a transmission unit configured to generate a data signal using the current signal, which is supplied through the power line, as a carrier wave, and to transmit the data signal through the power line, and a reception unit configured to receive the data signal, which is generated by the transmission unit, through the power line. | 08-08-2013 |
20130278051 | ELECTRIC AND HYBRID VEHICLE HIGH CURRENT CONDUCTOR - An apparatus for transferring electrical current between a first component and a second component includes at least one transfer conductor directing electrical current between the first and second components including a plurality of overlapping conducting layers each arranged in parallel with the directed electrical current and a plurality of insulation layers each disposed between alternating ones of the conducting layers. | 10-24-2013 |
20130293001 | Power Line Communication Device - A power line communication device that will control multiple sub-units without exception via broadcasting from a main unit is disclosed. The power line communication device controls the machines connected to each sub-unit from a main unit using power line communication. The power line communication device has a controller, a main unit superimposing control signals containing data from said controller onto the power line, and multiple sub-units controlling the connected machines by receiving control signals being broadcast from the main unit. Each sub-unit is set up to be capable of data transfer, and it is possible to initiate data transfers from the main unit or selected sub-units. | 11-07-2013 |
20140077588 | SEMICONDUCTOR DEVICE - A semiconductor device includes a first nonlinear element, an differential amplifier that generates a differential signal from a signal output by the first nonlinear element; a first and second insulating elements that are connected to a non-inverting signal output terminal and an inverting signal output terminal of the differential amplifier, respectively; first to third nonlinear elements each outputting a first logic level if the received signal is equal to or larger than a given threshold value, and outputting a second logic level if the received signal is smaller than the given threshold value; and a logic circuit that outputs the logic level output by the second nonlinear element if the logic levels output by the second and third nonlinear elements are different from each other, and makes the logic level of the output signal unchangeable when the second and third nonlinear elements output the same logic level. | 03-20-2014 |
20140077589 | EXTENDED SIGNALING SYSTEM AND METHOD - Embodiments are described that include a “front end” device located remotely from a local telephone location. The front end filters DC and AC current on a telephone line to separate these signals and passes a DC current through a low resistance Low Pass Filter without traditional resistance or current limiting means. The front end also provides signaling capability isolated from the DC and audio channels by a High Pass Filter. Some embodiments also include a “back end” unit located near a local telephone location. The “back end” unit filters the DC and AC currents into at least two DC current streams. One of the DC current streams provides sufficient current to power a local telephone. The other stream(s) provides current sufficient to power an auxiliary device. The “back end” device may also provide signaling isolated from the DC and audio channels that is complementary to the “front end” signaling. | 03-20-2014 |
20140103706 | POWER LINE COMMUNICATION (PLC) COUPLING THROUGH AN EXTERNAL POWER SUPPLY - Systems and methods according to aspects of the subject technology provide for power line communication (PLC) coupling through two-wire and three-wire external power supplies. In some aspects of the subject technology, a three-wire solution is provided that allows the transfer of direct current (DC) power signals, differential PLC signals, and a zero-cross signal between an external power supply and a PLC device using three wires. This may be accomplished by multiplexing two signals on two of the three wires. In some aspects of the subject technology, a two-wire solution is provided that allows the transfer of DC power signals, differential PLC signals, and a zero-cross signal between an external power supply and a PLC device using two wires. This may be accomplished by multiplexing two signals on one of the wires and three signals on the other wire. | 04-17-2014 |
20140103707 | Dual Port Pass-Through Midspan - A dual port pass through midspan constituted of: a first port arranged for connection to a first data terminal equipment over a first data communication cabling; a second port arranged for connection to a second data terminal equipment over a second data communication cabling; a first power sourcing equipment arranged to inject power on two of the 4 wire pairs of the first data communication cabling; a second power sourcing equipment arranged to inject power on two of the 4 wire pairs of the second data communication cabling; and a data pass through connection arranged to pass high speed data signals between the first port to the second port, the data pass through connection comprising a direct current blocking circuit arranged to: prevent power from the first power sourcing equipment from appearing at the second port; and prevent power from the second power sourcing equipment from appearing at the first port. | 04-17-2014 |
20140159477 | Power Delivery Over Digital Interaction Interface for Video and Audio (DiiVA) - A system for delivering power over a network of devices connected through a serial link includes a first and second differential pairs of wires. Each differential pair of wires is double AC coupled by a HPF on one side and by another HPF on an opposite side. An LPF connects a portion of each differential pair of wires between the HPFs to a voltage source, and another LPF connects that portion of each differential pair to a load. The system further includes a third and fourth differential pairs of wires. All four differential pairs of wires are located within a single cable, such as a CAT6 cable. The first, second and third differential pair of wires are used for video links, and the fourth differential pair of wires are used for the bi-directional hybrid link. A power delivery circuit in each device includes a voltage source, a power relay switch, a signature resistor for detection, and a load detector. | 06-12-2014 |
20140167499 | DEVICE FOR DETERMINING A COMMON-MODE SIGNAL IN A POWER LINE COMMUNICATION NETWORK - A device for determining a common-mode signal in a power line communication network. The device includes a first line, a second line, and a third line that are connected to a first terminal, to a second terminal, and to a third terminal, respectively. The first, the second, and the third terminal are configured to be connected to a phase line, a neutral line, and a protective ground line of the power line communication network, respectively. The device further includes a common-mode choke configured to couple out the common signal from the first, second, and third line, and the common-mode choke is connected to a termination impedance which is higher than an impedance of the power line communication network. | 06-19-2014 |
20140183937 | Method and Device Producing Energy by Violating of the Principle of Conservation of Energy and Absolute Ways to Prove the Reality of Such Energy Production - A method and device for the production of more energy than the input energy and/or for the production of energy without spending energy, in genuine violation of the principle of conservation of energy (CoE), through saving from the input energy, by utilizing the natural asymmetries in electrical systems caused by combinations of active and reactive elements, supplemented by favorable asymmetries caused by distorting the applied signals as well as by applying signals containing both constant and alternating part. | 07-03-2014 |
20140265551 | MEASUREMENT, CONTROL AND HARVEST OPTIMIZATION DEVICE FOR SOLAR MODULES REQUIRING FEWER CONNECTIONS - System and method for enabling communications via a power line conveying DC power from multiple DC power sources such as solar panels. Power and communications are provided using a single combined power and communications line. Data communication signals received over the power line are detected and compared against power line voltage for processing received data and generating data for transmission. Remote units are self-powered using power harvesting of the data communication signals. | 09-18-2014 |
20140265552 | POWER SUPPLY DEVICE, IMAGE FORMING APPARATUS, AND VOLTAGE OUTPUT METHOD - According to an aspect of the present invention, a power supply device includes: a DC power supply that outputs a DC voltage; an AC power supply that outputs any one of the DC voltage and a superimposed voltage being the DC voltage with an AC voltage superimposed thereon; and a bypass capacitor that charges a part of a voltage that is output from the AC power supply. The DC power supply starts outputting the DC voltage in a constant voltage mode and, when a predetermined condition is satisfied, switches from the constant voltage mode to a constant current mode to output the DC voltage in the constant current mode. | 09-18-2014 |
20140346857 | PROTECTING AGAINST TRANSIENTS IN A COMMUNICATION SYSTEM - A system for transmitting alternating current power and communication signals between a first location and a second location via a communication path which includes at least one inductive load and at least one switching means for switching power to said at least one load on and off, the system including control means adapted for controlling said at least one switching means so that, in response to switching off said power, a direct current is applied to said at least one inductive load and, in response to actuation of said at least one switching means to switch said power on, said power is switched on during a phase of the power which results in a magnetization of said at least one inductive load opposite to that resulting from said direct current. | 11-27-2014 |
20140361608 | REDUNDANT POWER SUPPLY CIRCUIT, POWER OVER ETHERNET SYSTEM, AND METHOD - A redundant power supply circuit includes a port detection circuit, a fixed state detection circuit, a voltage conversion circuit, and a control circuit. The port detection circuit detects and outputs a plurality of ready signals according to a plurality of power signals of a number of POE ports. The fixed state detection circuit outputs first control signals according to a predetermined voltage signal of a network device. The control circuit generates and sends enable signals to the voltage conversion circuit according to the first control signals and the plurality of ready signals. The voltage conversion circuit converts the plurality of power signals into driving voltage signals according to the enable signals. A POE system and method are also provided. | 12-11-2014 |
20150021982 | DIRECT CURRENT ELECTRICAL GENERATING SYSTEM INCLUDING A PLURALITY OF DIRECT CURRENT ELECTRICAL GENERATING MODULES EACH HAVING AN ELECTROMECHANICAL SWITCH - A system includes a power line, a control line, and a plurality of direct current electrical generating modules. Each of the direct current electrical generating modules is electrically connected to the power line and the control line and includes an electromechanical switch structured to interrupt power flowing through the power line. A control module is electrically connected to the control line and is structured to electrically control the electromechanical switch of each of the direct current electrical generating modules via the control line. | 01-22-2015 |
20150123461 | Methods For Powering NDT Probes - The present invention provides methods for powering non-destructive (NDT) probes, such as ultrasonic probes. Methods allow for power and signal transmission to NDT probes via a single wire. Methods provide for one or more bias tees disposed at ends of the single wire for power and signal transmission. | 05-07-2015 |
20150130270 | Electrical System Adapted to Transfer Data and Power Between Devices on a Network - This invention relates to an electrical system which enables peripheral devices to communicate exclusively of other AC and power transceivers which provide to the electrical system and receive from the electrical system power and signals. The invention is an electrical system that comprises network channels ( | 05-14-2015 |
20150357866 | SYSTEM AND METHOD FOR DISTRIBUTION OF ELECTRICAL POWER AND CONTROL DATA IN TEMPORARY LIGHTING INSTALLATIONS - An AC circuit PLC injection module of a PLC-enabled power and data distribution system ( | 12-10-2015 |