Modulation Technique Patents (Class 340/538.11)
  • Patent number: 10149135
    Abstract: Provided is a disclosure for embodiments for a brush with communication capabilities, which is configured to clean a surface of, for example, a semiconductor wafer, as well as an offline brush conditioning system and a CMP system that can communicate with the brush.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: December 4, 2018
    Assignee: Illinois Tool Works Inc.
    Inventors: Bradley Scott Withers, Corey Alan Hughes, Erik Scott Nelson, Steven Kenneth Christie, Brent Allan Best
  • Patent number: 9860772
    Abstract: Embodiments of the present invention provide a method and apparatus for determining a connection relationship between an antenna feeding port of a base station and an antenna port. The method includes: receiving, via one antenna port, a signal sent by a base station, and acquiring the signal via a Smart Bias-Tee in an antenna and a port of a remote control unit in the antenna, where the antenna port, the Smart Bias-Tee, and the port of the remote control unit are in a one-to-one correspondence; determining, according to the Smart Bias-Tee and the port of the remote control unit that acquire the signal, the antenna port that receives the signal; and sending, to the base station, identification information of the antenna port that receives the signal, and/or identification information of an antenna corresponding to the antenna port. Then accuracy and convenience in determining the connection relationship can be improved.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: January 2, 2018
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Honggang Xu, Tao Pu, Xiaodong Zhang, Xiangyang Liu
  • Patent number: 9851735
    Abstract: A wireless load control system for controlling one or more electrical loads comprises a wireless control device (e.g., a gateway device) able to obtain a present time from a server via a network (e.g., the Internet), control the electrical loads according to a timeclock schedule, and disable the timeclock schedule if the present time is not able to be obtained from the server via the network. The wireless control device may also be able to obtain the present time from a digital message received from an external device (e.g., a smart phone or a tablet device) via the network. The wireless control device may be configured to receive a control signal indicating a power outage (e.g., from a battery backup device), and to operate in a low-power mode in response to receiving the control signal indicating the power outage.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: December 26, 2017
    Assignee: Lutron Electronics Co., Inc.
    Inventors: Benjamin F. Bard, David J. Dolan, Timothy Mann, Christopher M. Riedl
  • Patent number: 9828850
    Abstract: An electrically powered artificial lift system includes a tubular for conveying a wellbore fluid upward and a downhole pump that urges the wellbore fluid into the tubular. A power cable conveys a three-phase power signal to the pump motor on three conductors. One of the three conductors is coupled to an internal node of a high-to-low voltage (HLV) source coupler via a low frequency blocking filter that shields the internal node from the motor power signal while conveying a sensor power signal from the internal node to the selected conductor and conveying a telemetry signal from the selected conductor and to the internal node. A similar downhole coupler couples a wye point of the motor to a downhole sensor assembly to supply the sensor power signal and to receive the telemetry signal.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: November 28, 2017
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Srilatha Boyanapally, Aram Shihab Khaleel Almuhana, Sudhir Kumar Gupta
  • Patent number: 9814123
    Abstract: Methods, apparatus and computing devices are described herein for activatable lighting devices. In various embodiments, a composition of a lighting system may be ascertained based at least in part on a database (851, 951) of one or more lighting device records associated with one or more lighting devices (100, 600, 700, 800a, 800b, 900, 1000a, 1000b, 1000c) of the lighting system. In various embodiments, it may be determined, based on the ascertained composition, that a predetermined criterion is satisfied. In various embodiments, a communication may be issued in response to the determination. The communication may be configured to facilitate activation of a deactivated lighting device function of a lighting device associated with the lighting system.
    Type: Grant
    Filed: April 2, 2014
    Date of Patent: November 7, 2017
    Assignee: PHILIPS LIGHTING HOLDING B.V.
    Inventors: Bartel Marinus Van De Sluis, Julian Charles Nolan, Tim Dekker, Alexander Henricus Waltherus Van Eeuwijk, Philip Steven Newton, Hilbrand Vanden Wyngaert, Dzmitry Viktorovich Aliakseyeu, Heiko Pelzer, Ramon Antoine Wiro Clout
  • Patent number: 9705562
    Abstract: A power line communication device comprises a plurality of transformers in series. These transformers are used to increase the voltage of a digitally encoded signal in a stepwise fashion prior to being coupled into a power line. While a transmit path includes at least a first transformer and a second transformer in series, a receive path may include only one of these two transformers. For example a receive path may include only the first transformer, or include the first transformer and a third transformer. The net ratio of voltage increase and decrease may be different in the transmit and receive paths.
    Type: Grant
    Filed: June 23, 2008
    Date of Patent: July 11, 2017
    Assignee: BROADCOM EUROPE LIMITED
    Inventors: Jonathan Ephriam David Hurwitz, David Gimenez Rocamora
  • Patent number: 9504099
    Abstract: A light bulb base includes a power source interface configured to couple the light bulb base to a light bulb socket. It also includes a bulb-coupling interface configured to removably couple the light bulb base to a bulb assembly. A user interface mechanism is also included in the light bulb base, and is operable to control a function of the bulb assembly or the base when the base is coupled to the bulb assembly. The light bulb base may also include a receiver for receiving a signal from a remote control source and/or a controller configured to perform the function.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: November 22, 2016
    Assignee: NthDegree Technologies Worldwide Inc.
    Inventors: Kenneth Stephen McGuire, Mark John Steinhardt, Corey Michael Bischoff, Edward Mack Sawicki, Erik John Hasenoehrl
  • Patent number: 9425832
    Abstract: A device includes a first amplifier circuit coupled to a first transformer and a second transformer, the first transformer selectively coupled to a first shared power distribution network through a first switch, the second transformer selectively coupled to a second shared power distribution network through a second switch.
    Type: Grant
    Filed: April 18, 2014
    Date of Patent: August 23, 2016
    Assignee: Qualcomm Incorporated
    Inventors: Ahmed Abdel Monem Youssef, Mehmet Uzunkol, Rui Xu, Ehab Ahmed Sobhy Abdel Ghany, Wingching Vincent Leung, Sang Hyun Woo, Allen He, Li-Chung Chang
  • Patent number: 9398352
    Abstract: A sensing platform for monitoring a transmission system, and method therefor, may include a sensor that senses one or more conditions relating to a condition of the transmission system and/or the condition of an environment around the transmission system. A control system operatively associated with the sensor produces output data based on an output signal produced by the sensor. A transmitter operatively associated with the control system transmits the output data from the control system.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: July 19, 2016
    Assignee: Battelle Energy Alliance, LLC
    Inventors: Robert E. Polk, John M. Svoboda, Phillip B. West, Gail L. Heath, Clark L. Scott
  • Patent number: 9065544
    Abstract: Systems and methods for pulse-based binary communication are provided. An example system may include a transmitting device and a receiving device. The transmitting device may be configured to generate a supply voltage for use in operating the receiving device and to cause at least one pulse to occur in the supply voltage, the at least one pulse being based on a binary value. The at least one pulse may comprise, for example, a temporary change in the supply voltage. The receiving device may be configured to receive the supply voltage from the transmitting device, to detect the at least one pulse in the supply voltage and to determine the binary value based on the at least one pulse. The receiving device may then perform an action based on the binary value.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: June 23, 2015
    Inventors: Nicholas Lekatsas, Anant Aggarwal, Biju Antony
  • Patent number: 9042812
    Abstract: Aspects of the subject disclosure may include, for example, a system including a frequency mixer that combines a signal and a carrier wave to form a combined signal, and a transmitter that generates a transmission based on the combined signal. The system can also include a coupling device that emits the transmission as an electromagnetic wave guided by an outer surface of a transmission medium. The electromagnetic wave can propagate longitudinally along the surface of the transmission medium and at least partially around the surface of the transmission medium. Other embodiments are disclosed.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: May 26, 2015
    Assignee: AT&T Intellectual Property I, LP
    Inventors: Robert Bennett, Donald J Barnickel, Farhad Barzegar, Irwin Gerszberg, Paul Shala Henry, Thomas M. Willis, III
  • Patent number: 9024464
    Abstract: A powerline communication control system for controlling a lighting unit, such as an LED lighting unit, including a master controller for receiving lighting unit control inputs from a lighting controller and generating corresponding lighting unit command outputs in a lighting system command format and transmission mode and superimposing the lighting unit command outputs onto the power distribution system and at least one lighting slave unit for receiving the lighting command signal, separating the lighting command signal from the power signal and for providing lighting unit control commands to the at least one lighting unit to control illumination thereof.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: May 5, 2015
    Assignee: Lumenpulse Lighting Inc.
    Inventor: Gregory Campbell
  • Patent number: 8952793
    Abstract: A bicycle electrical system is provided with a first electric component, a second electric component, and a third electric component. The first electric component includes a first electric power line communication section. The second electric component includes a second electric power line communication section. The third electric component includes a third electric power line communication section. The first and second electric power line communication sections are connected with a first electric power line such that the first and second electric power line communication sections conduct communications via the first electric power line. The second and third electric power line communication sections are connected with a second electric power line such that the second and third electric power line communication sections conduct communications via the second electric power line.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: February 10, 2015
    Assignee: Shimaro Inc.
    Inventors: Taihei Nishihara, Takafumi Suzuki, Shun Kou
  • Patent number: 8897697
    Abstract: A millimeter-wave surface-wave communications system to provide network connectivity for a backhaul network and a distributed antenna system. Rather than building new structures, and installing additional fiber and cable, embodiments described herein disclose using high-bandwidth, millimeter-wave communications propagating over existing power line infrastructure. The wavelength of the transmission is comparable in size or smaller than the circumference of the power lines.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: November 25, 2014
    Assignee: AT&T Intellectual Property I, LP
    Inventors: Robert Bennett, Donald J. Barnickel, Farhad Barzegar, Irwin Gerszberg, Paul Shala Henry, Thomas M. Willis, III
  • Patent number: 8890679
    Abstract: A power device may include channels coupled to conductors in lines, where each one of the channels is coupled to a different one of the lines than the other channels and where the channels deliver direct current power signals over the conductors to the load devices. Each one of the load devices may be powered by a different one of the direct current power signals. The power device may include a power communicator that communicates with the load devices over the conductors that propagate the direct current power signals. The power communicator may determine a target power level for the load devices based on the communication over the conductors. The load device may adjust an amount of power in the direct current power signals in order to match the target power level.
    Type: Grant
    Filed: February 18, 2013
    Date of Patent: November 18, 2014
    Assignee: Redwood Systems, Inc.
    Inventors: Mark Covaro, Dave Leonard
  • Patent number: 8759999
    Abstract: A powerline communication control system for controlling a lighting unit, such as an LED lighting unit, including a master controller for receiving lighting unit control inputs from a lighting controller and generating corresponding lighting unit command outputs in a lighting system command format and transmission mode and superimposing the lighting unit command outputs onto the power distribution system and at least one lighting slave unit for receiving the lighting command signal, separating the lighting command signal from the power signal and for providing lighting unit control commands to the at least one lighting unit to control illumination thereof.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: June 24, 2014
    Assignee: Lumenpulse Lighting, Inc.
    Inventor: Gregory Campbell
  • Patent number: 8723667
    Abstract: A method, computer program product, and system for managing a power distribution network is provided. In one embodiment, the computer program product comprises a VARs management module configured to generate a command configured to cause a capacitor bank to connect to the power distribution network; a voltage management module configured to receive voltage data derived from a measurement of a power line of the power distribution network and to output an alert if the voltage data is beyond a threshold; a measurement module configured to generate a request for measurement data that comprises data of a measurement of one or more electrical parameters of the power distribution network; and a power outage management module configured to output data of a location of a power outage of the power distribution system.
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: May 13, 2014
    Assignee: Current Technologies, LLC
    Inventor: Melvin Joseph White, II
  • Patent number: 8669871
    Abstract: Methods and systems for passive wireless surface acoustic wave devices for orthogonal frequency coded devices to implement ON-OFF sensors reusing orthogonal frequency code and distinguishing between ON and OFF states using additional PN sequence and on/off switches producing multi-level coding as well as external stimuli for switching and identification of a closure system. An embodiment adds a level of diversity by adding a dibit to each surface acoustic wave devices, thus providing four different possible coding states. The PN on-off coding can be with the dibit for coding in a multi-tag system.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: March 11, 2014
    Assignee: University of Central Florida Research Foundation, Inc.
    Inventors: Donald Malocha, Nikolai Kozlovski
  • Patent number: 8519560
    Abstract: A power line communication device achieving suppression of electric power consumption is provided. Processing performed by a CPU of a PLC adapter includes the steps of sensing that a time to cut off electric power supply has come (S610), generating a message notifying that electric power supply will be cut off (S620), transmitting the message to equipment connected to the PLC adapter (S630), and emitting a command to cut off electric power supply to an RJ45 connector to a power feed circuit (S680) when a confirmation signal with regard to cut-off of electric power supply is received from the equipment (YES in step S640) and when cut-off OK is indicated (YES in step S650).
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: August 27, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Masakazu Ito
  • Patent number: 8421614
    Abstract: A mechanism is provided for providing reliable redundant data communications. The mechanism issues a request for data to a set of powered elements using a set of secondary communication channels in response to a reduction in a level of communications being detected. The set of secondary communication channels comprises one or more alternating current power lines and the request is sent as data injected onto the alternating current power lines to the set of powered elements. The mechanism receives the data using the set of secondary communication channels from the set of powered elements, analyzes the data to determine a set of recovery actions to restore the level of communications, and issues the set of recovery actions to the set of powered elements using the set of secondary communication channels.
    Type: Grant
    Filed: September 19, 2007
    Date of Patent: April 16, 2013
    Assignee: International Business Machines Corporation
    Inventors: Brian James Cagno, John Charles Elliott, Kenny Nian Gan Qiu, Donald Scott Smith
  • Patent number: 8410630
    Abstract: A powerline communication control system for controlling a lighting unit, such as an LED lighting unit, including a master controller for receiving lighting unit control inputs from a lighting controller and generating corresponding lighting unit command outputs in a lighting system command format and transmission mode and superimposing the lighting unit command outputs onto the power distribution system and at least one lighting slave unit for receiving the lighting command signal, separating the lighting command signal from the power signal and for providing lighting unit control commands to the at least one lighting unit to control illumination thereof.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: April 2, 2013
    Assignee: Lumenpulse Lighting Inc.
    Inventor: Gregory Campbell
  • Patent number: 8405500
    Abstract: A power and data delivery system for a machine. The system includes a power and data conductor located throughout at least a portion of the machine, a plurality of processing nodes, each connected to the conductor at various locations, and a plurality of devices, each connected to a corresponding one of the plurality of processing nodes and controlled by the processing node, wherein each processing node may be connected at any location of the conductor.
    Type: Grant
    Filed: December 19, 2005
    Date of Patent: March 26, 2013
    Assignee: Caterpillar Inc.
    Inventors: Bryan G. Lammers, James I. Portscheller, Paul G. Casperson, John W. Crayton, David C Freeman
  • Patent number: 8390441
    Abstract: A power device may include channels coupled to conductors in lines, where each one of the channels is coupled to a different one of the lines than the other channels and where the channels deliver direct current power signals over the conductors to the load devices. Each one of the load devices may be powered by a different one of the direct current power signals. The power device may include a power communicator that communicates with the load devices over the conductors that propagate the direct current power signals. The power communicator may determine a target power level for the load devices based on the communication over the conductors. The load device may adjust an amount of power in the direct current power signals in order to match the target power level.
    Type: Grant
    Filed: August 7, 2012
    Date of Patent: March 5, 2013
    Assignee: Redwood Systems, Inc.
    Inventors: Mark Covaro, Dave Leonard
  • Patent number: 8378810
    Abstract: In a signal shaper circuit provided between a VICS antenna, which receives a VICS signal and outputs reception input data signal, and a navigation CPU for signal processing, a low pass filter of a resistor and a capacitor is provided. The cutoff frequency of the low pass filter is set to pass light modulation noise included in the input data signal but cut off the input data signal, which is higher in frequency than the light modulation noise. The input data signal is compared with the filter-processed signal used as a reference signal by a comparator. As a result, a final output data signal is outputted in a waveform-shaped form and without loss of data.
    Type: Grant
    Filed: January 19, 2010
    Date of Patent: February 19, 2013
    Assignee: Denso Corporation
    Inventor: Takuya Okubo
  • Patent number: 8287245
    Abstract: A system is provided for transmitting control signals to the internal devices of a compressor. The compressor includes a housing, a hermetic power terminal and a motor for powering the compressor. The system includes a frequency converter that is located external to the compressor housing and a frequency decoder that is positioned inside the compressor housing. The frequency converter can convert a control signal from a controller to a high frequency signal. The frequency decoder decodes and converts the high frequency signal to a control signal for an internal device of the compressor. An AC input power source provides electrical power to the motor, and power transmission lines connect the AC input power source to the hermetic power terminal. The frequency converter is electrically coupled to the frequency decoder by two power transmission lines.
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: October 16, 2012
    Assignee: Bristol Compressors International, Inc.
    Inventor: John W. Tolbert, Jr.
  • Patent number: 8279058
    Abstract: A system, method and device for communicating over a power line are provided. In one embodiment, the system includes a first device configured to communicate via broadband communications having a bandwidth greater than one megahertz, and a second device having a first port and a second port. The second port may be configured to communicate with the first device via broadband communications and the first port configured to communicate over one or more power lines with one or more remote devices via one or more of a plurality of frequency bands, and wherein each of the plurality of frequency bands has a bandwidth that is less than five hundred kilohertz. The second device may select one of the plurality of frequency bands and one of a plurality of modulations schemes based on channel conditions and/or operational parameters. The second device may be configured to transmit and receive data in a multitude of the plurality of frequency band concurrently.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: October 2, 2012
    Assignee: Current Technologies International GmbH
    Inventor: Manu Sharma
  • Patent number: 8204472
    Abstract: Systems and methods for communicating over a power line are configured to substantially simultaneously communicate over a plurality of wideband frequency ranges. Signals may be communicated two or from a communication node at two different frequencies simultaneously. These signals may be exchanged with different nodes and/or include independent data. In some embodiments, some of the wideband frequency ranges are above 30 MHz.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: June 19, 2012
    Assignee: Broadcom Corporation
    Inventors: Juan Carlos Riveiro, Nils Haken Fouren, Jonathan Ephraim David Hurwitz
  • Patent number: 8188855
    Abstract: A system, method and device for communicating over a power line are provided. In one embodiment, the device includes a controller, a first port in communication with the controller and configured to communicate over a power line via any of a plurality of frequency bands, and a second port in communication with the controller and configured to transmit and receive broadband communications. The first port may be configured to select one of the plurality of frequency bands for communications and the controller configured to provide routing functions for data received via the second port to be transmitted via the first port. The second port may comprise a wireless modem or a modem configured to communicate over a power line via broadband communications. The broadband communications may use a frequency band having a bandwidth greater than at least five of the plurality of frequency bands.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: May 29, 2012
    Assignee: Current Technologies International GmbH
    Inventor: Manu Sharma
  • Patent number: 8179250
    Abstract: A power management interface is provided and includes a switch, a transmitting circuit, and a receiving circuit. The switch is coupled to an AC power line for controlling a power line signal to a load. The transmitting circuit generates a switching signal to control the switch and achieve a phase modulation to the power line signal in response to a transmitting-data. The receiving circuit is coupled to receive the power line signal for detecting a phase of the power line signal and generating a receiving-data to control power of the load. The receiving-data is generated in accordance with the phase detection of the power line signal and correlated to the transmitting-data.
    Type: Grant
    Filed: July 13, 2009
    Date of Patent: May 15, 2012
    Assignee: System General Corporation
    Inventors: Ta-Yung Yang, Yi-Chi Lin, Yung-Sheng Wu, Wen-Chang Lu, Shih-Jen Yang
  • Patent number: 8179056
    Abstract: Remote lighting control methods, devices and systems are disclosed. One embodiment of the present invention pertains to a light device. The light device includes a light source for emitting light and a control circuit for setting an intensity level of the light source based on receipt of control data via a power line when the light device is electrically coupled to the power line. The control data is generated in response to user input to an input panel of a remote lighting control module for the light device. In addition, the light device comprises a unique address associated with a region on the input panel.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: May 15, 2012
    Assignee: Cypress Semiconductor Corporation
    Inventor: Dennis Seguine
  • Patent number: 8151823
    Abstract: A fluid power valve arrangement with at least one solenoid valve whose solenoid is connected or able to be connected via only two control lines with an electrical control and/or communication device. The solenoid valve has integrated in it a non-volatile storage device containing identification data of the solenoid valve, and furthermore a modulator for modulation of data of the solenoid valve in the two supply lines. The control and/or communication device possesses a demodulator for demodulation of the modulated data.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: April 10, 2012
    Assignee: Festo AG & Co. KG
    Inventors: Martin Gehrke, Helmut Deichert
  • Patent number: 8130084
    Abstract: A method, system, and computer program product are provided for communicating to a powered element in a rack system. A controller injects communication data onto power lines that provides power to a plurality of powered elements. The powered elements determine if the communication data transmitted via the power lines should be used for configuration using an address embedded within the communication data. The powered elements compare an embedded target address within the communication data to the address of the particular element. If there is a match between the addresses, the corresponding powered element processes the communication data to configure the powered element. As a result, data may be communicated over the power lines thereby eliminating the need for separate communication lines. Thus, the amount of cables required to interconnect the powered elements of the distributed data processing system may be reduced by eliminating the communication lines from the system configuration.
    Type: Grant
    Filed: April 30, 2007
    Date of Patent: March 6, 2012
    Assignee: International Business Machines Corporation
    Inventors: Brian James Cagno, Kenny Nian Gan Qiu, Donald Scott Smith
  • Patent number: 8115605
    Abstract: A power line communications PLC transmitter and receiver device includes a physical communications protocol layer that provides for dynamic selection of a communications signal transmission operating mode from a plurality of such modes, where each has a corresponding transmission data structure that is based on characteristics of the electric power distribution network to which the PLC device is to be coupled and also the communications protocol profile requirements for the network.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: February 14, 2012
    Assignee: STMicroelectronics, Inc.
    Inventors: Michael J. Macaluso, Bo Zhang, Oleg Logvinov
  • Patent number: 8077027
    Abstract: A system and method are disclosed for recording and evaluating faults in event transmissions between security system components. A panel in a monitored building may send event signals to a receiver located in a central monitoring facility. Event signals may represent a status of individual alarms or sensors in the building, or they may provide a status of the system as a whole. If the quality of the transmission is substandard or in a format that is unacceptable to the receiver, the signal data associated with the event is recorded for analysis. Recording is controlled by a line card associated with the receiver, and the signal data is stored in local or remote memory. Signal data can be manually or automatically analyzed to determine the source of the fault. In addition, recorded signal data can be used to build customized software to recognize signals from previously unrecognized or faulty panels.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: December 13, 2011
    Assignee: Tyco Safety Products Canada Ltd.
    Inventor: Stephane Foisy
  • Patent number: 8018331
    Abstract: A multilevel inverter using a cascade configuration with a device for equally controlling a power factor for each unit cell includes: a master controller, a plurality of power cells connected in series for each of three AC (Alternating Current) phases, a phase shift transformer for supplying a power cell input voltage, a CAN (Controller Area Network) communication network to provide a communication path between the master controller and each power cell, and cell controllers to control output voltages and output frequencies of the respective power cells according to a voltage command and a frequency command from the master controller, each cell controller having a pulse width modulator to generate a pulse width modulation control signal of a variable voltage and a variable frequency to the connected corresponding power cell, wherein each cell controller is configured to calculate a phase difference value of the corresponding power cell according to a preset total number of connected power cells and the floor n
    Type: Grant
    Filed: February 27, 2008
    Date of Patent: September 13, 2011
    Assignee: LS Industrial Systems Co., Ltd.
    Inventor: Han-Keun Jang
  • Patent number: 7970374
    Abstract: Systems and methods for communicating over a power line are configured to substantially simultaneously communicate over a plurality of wideband frequency ranges. Signals may be communicated two or from a communication node at two different frequencies simultaneously. These signals may be exchanged with different nodes and/or include independent data. In some embodiments, some of the wideband frequency ranges are above 30 MHz.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: June 28, 2011
    Assignee: Broadcom Corporation
    Inventors: Juan Carlos Riveiro, Nils Haken Fouren, Jonathan Ephraim David Hurwitz
  • Patent number: 7961090
    Abstract: A method and a system for controlling LED with power line carrier are disclosed. The system contains a host controller, an electric power conductor, and at least a luminous device, and the luminous device further containing an environmental data collection module. The method comprises the steps of providing a power line carrier module to both the host controller and the luminous devices; the luminous devices detecting a set of environmental data by the environmental data collection module; the luminous devices transmitting the set of environmental data to the host controller; the host controller recording and analyzing the set of environmental data; and the host controller sending a control signal to the luminous devices according to the analysis. Therein the control signal and the set of environmental data are transmitted by the power line carrier module through the electric power conductor.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: June 14, 2011
    Assignee: Intematix Technology Center Corp.
    Inventor: Yu-Chou Hu
  • Patent number: 7952482
    Abstract: Methods and systems for coding SAW OFC devices to mitigate code collisions in a wireless multi-tag system. Each device producing plural stepped frequencies as an OFC signal with a chip offset delay to increase code diversity. A method for assigning a different OCF to each device includes using a matrix based on the number of OFCs needed and the number chips per code, populating each matrix cell with OFC chip, and assigning the codes from the matrix to the devices. The asynchronous passive multi-tag system includes plural surface acoustic wave devices each producing a different OFC signal having the same number of chips and including a chip offset time delay, an algorithm for assigning OFCs to each device, and a transceiver to transmit an interrogation signal and receive OFC signals in response with minimal code collisions during transmission.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: May 31, 2011
    Assignee: University of Central Florida Research Foundation, Inc.
    Inventors: Donald Malocha, Nikolai Kozlovski
  • Patent number: 7898406
    Abstract: A method for communicating settable priority data from a powered device being powered over communication cabling to power sourcing equipment, the method comprising: prior to connecting power to operational circuitry of the powered device, transmitting first multi-bit data from the powered device to the power sourcing equipment; subsequent to the transmitted first multi-bit data, connecting power received over the communication cabling to the powered device operational circuitry; receiving information from the powered device operational circuitry; disconnecting the received power from the powered device operational circuitry; and subsequent to the disconnecting, and prior to reconnecting power to the operational circuitry, transmitting second multi-bit data from the powered device to the power sourcing equipment, the second multi-bit data being a function of the received information, at least one of the first multi-bit data and the second multi-bit data being a function of a settable priority.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: March 1, 2011
    Assignee: Microsemi Corp. - Analoged Mixed Signal Group Ltd
    Inventors: Yair Darshan, Alon Ferentz, Dan Admon, Yossi Shanava, Roni Blaut, Poldi Rimboim, Ezra Koper
  • Patent number: 7899436
    Abstract: Systems and methods for communicating over a power line are configured to substantially simultaneously communicate over a plurality of wideband frequency ranges. Signals may be communicated two or from a communication node at two different frequencies simultaneously. These signals may be exchanged with different nodes and/or include independent data. In some embodiments, some of the wideband frequency ranges are above 30 MHz.
    Type: Grant
    Filed: August 24, 2006
    Date of Patent: March 1, 2011
    Inventors: Juan Carlos Riveiro, Nils Hakan Fouren, Jonathan Ephraim David Hurwitz
  • Patent number: 7890117
    Abstract: The present invention is a method and apparatus to provide remote communication using network telephony. In a transmitter, an activation message is decoded to generate an activation command. The activation message is sent from an activator via a communication medium in response to a telephony call. An information message is transmitted, responsive to the activation command, to a receiver using a communication protocol. In a receiver, an activation message is decoded to generate an activation command. The activation message is sent in response to a telephone call. An information message is received, responsive to the activation command. The information message is sent from a transmitter according to a communication protocol via a communication medium.
    Type: Grant
    Filed: March 9, 2000
    Date of Patent: February 15, 2011
    Assignee: Nortel Networks Limited
    Inventor: Mohammad R. Zonoun
  • Patent number: 7877078
    Abstract: Systems and methods for communicating over a power line are configured to substantially simultaneously communicate over a plurality of wideband frequency ranges. Signals may be communicated two or from a communication node at two different frequencies simultaneously. These signals may be exchanged with different nodes and/or include independent data. In some embodiments, some of the wideband frequency ranges are above 30 MHz.
    Type: Grant
    Filed: June 15, 2009
    Date of Patent: January 25, 2011
    Inventors: Juan Carlos Riveiro, Nils Hakan Fouren, Jonathan Ephraim David Hurwitz
  • Patent number: 7825822
    Abstract: An economical system and method for extracting amplitude and frequency information from a modulated AC signal are provided. In one embodiment, the invention includes a circuitry implementing op amps, a dual diode, a filter, and a comparator to receive and manipulate the modulated AC signal. The dual diode receives and splits the AC signal into two separate paths, including a baseline path and a filtering path. The AC signal passing through the baseline path remains substantially unchanged, and the AC signal passing through the filtering path passes through a low-pass filter. The signal is then sent through a comparator for comparing amplitudes of the AC signal from the two paths, and the comparator output is received by a microprocessor for controlling a display that generates a visual indicia responsive to the comparator output.
    Type: Grant
    Filed: March 27, 2006
    Date of Patent: November 2, 2010
    Assignee: Cepia, LLC
    Inventors: James Russell Hornsby, Marcellus Rambo Benson, James Augustus Keefe, III, Joseph Lee McGowan, Ashley B. Hornsby
  • Patent number: 7791468
    Abstract: 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 time server in electrical communication with the transceiver, the time server configured to retrieve the time. A substation controller is in electrical communication with a power distribution line. The substation controller includes a transceiver and a programmable circuit. The programmable circuit includes a substation clock. The programmable circuit is programmed to periodically retrieve the time from the time server to calibrate the substation clock to the retrieved time, and to control the transceiver to transmit the time to the endpoint transceiver.
    Type: Grant
    Filed: January 31, 2007
    Date of Patent: September 7, 2010
    Assignee: Hunt Technologies, Inc.
    Inventors: Damian G. Bonicatto, Verne J. Olson, Rolf J. Flen, David F. Olson
  • Patent number: 7764727
    Abstract: An accurate total error rate performance can be measured using a computed error vector magnitude (EVM) per stream. Using this EVM, the receiver or the transmitter can advantageously generate an optimized modulation and coding scheme (MCS) that corresponds to a specific number of streams, modulation and coding rate for the transmitter. For example, the receiver can compute an SNR from the EVM and then use an SNR vs. MCS table to determine the optimized MCS. In contrast, the transmitter can receive an EVM-to-RSSI mapping and an EVM-to-MCS mapping from the receiver. These mappings and an EVM can facilitate selecting the optimized MCS.
    Type: Grant
    Filed: January 10, 2006
    Date of Patent: July 27, 2010
    Assignee: Atheros Communications, Inc.
    Inventors: Huanchun Ye, Won-Joon Choi, Ning Zhang, Jeffrey M. Gilbert
  • Patent number: 7741960
    Abstract: An apparatus and method for binary communication between a vehicle and a trailer transmits high voltage and low voltage signals detectable as high bits and low bits aggregated into messages. A controller in the vehicle and trailer subsystems each include transceivers for transmitting messages across the vehicle's powerbus that are detectable when current flows across the powerbus. The apparatus and method are useful for controlling trailer brakes via a blue wire interface.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: June 22, 2010
    Assignee: Active Technology II, LLC
    Inventors: Alan Hoogenakker, Donald Pieronek
  • Patent number: 7675408
    Abstract: 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 conductive communication path. In this manner, the non-electrically conducting signal may have properties that do not provide imminent danger from human contact.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: March 9, 2010
    Assignee: Current Technologies, LLC
    Inventor: Paul A. Kline
  • Patent number: 7656289
    Abstract: An apparatus for monitoring an inside of a manhole in which the inside of the manhole is monitored using a simple communication and power supply unit is closed.
    Type: Grant
    Filed: January 11, 2007
    Date of Patent: February 2, 2010
    Assignee: LS Cable Ltd.
    Inventor: Su-kil Lee
  • Patent number: 7656285
    Abstract: A system in which one or more alarm sources (10), can wirelessly communicate with a receiver (30), to activate an alarm and does not contain any identification that indicates the communication's source (10). The system may include “repeaters” (40), whose function is to relay the communication from one station to another over distances longer than can be reached by a single transmitter (10), Apparatuses for transmitting (10), repeating (40), and receiving (30), are also disclosed, as well as a communication system comprised of various elements of these.
    Type: Grant
    Filed: February 2, 2005
    Date of Patent: February 2, 2010
    Assignee: Koninklijke Philips Electronics N.v.
    Inventors: Kim Johnnie Hansen, Carlton B. Morgan, Thomas Dean Lyster
  • Patent number: 7648077
    Abstract: A system for communicating across conventional HVAC wiring is provided. The system includes a communication device having a communication module capable of inducing low power, high frequency current signals into a single control wire coupling, for example, a thermostat with a compressor. The communication module includes a power supply module that draws power sufficient to operate the communication module from the existing HVAC wiring, so as to eliminate any need for batteries or external power sources. A second communication module may be coupled to the single control wire. The second communication module operates as a transceiver sending communication signals to, and receiving communication signals from, the communication module. In one embodiment, the communication module is disposed within a building, for example coupled to an electronic thermostat, while the second communication module is disposed outside the building near the compressor.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: January 19, 2010
    Assignee: Emerson Electric Co.
    Inventors: John F. Rossi, Paul Michael Huddleston, Mark Lee Barton, Bradley A. Smith, Howard Ng, Carl J. Mueller, James P. Garozzo, Cecil H. Barrett, Russell Thomas House