With Inductive Coupling (e.g., Transformer Or Torroid) Patents (Class 340/538.16)
  • Patent number: 9465378
    Abstract: According to some embodiments, there is provided a power electronics device including: a controlling unit, a determining unit, a confirming unit and a determining unit. The controlling unit performs surveillance/control concerning an input/output of power to a power line with other power electronics devices connected via the power line. The determining unit determines a master device which is a subject of the surveillance/control and a slave device which is controlled by the master device, based on power characteristic information of the other power electronics devices from among the other power electronics devices and the power electronics device. The confirming unit confirms whether the master device and the slave device determined by the determining unit are matched with the master device and the slave device determined by the other power electronics devices. The determining unit permits a start of the surveillance/control when matching is determined by the confirming unit.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: October 11, 2016
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yasuyuki Nishibayashi, Keiichi Teramoto, Kotaro Ise, Yasuro Shobatake, Ikuya Aoyama, Yuki Yonezawa, Fumiaki Kanayama, Yusuke Doi, Shinya Murai
  • Patent number: 9184961
    Abstract: A method includes: receiving an FM radio signal including an analog-modulated portion; digitally sampling an analog-modulated portion of the radio signal to produce a plurality of samples; using a ratio between an average magnitude and an RMS magnitude of a block of the samples to compute a signal quality metric; detecting sum and difference components of the baseband multiplex signal content; using the baseband content to produce an output signal; and blending the output signal from stereo to monaural as the signal quality metric falls below a threshold value.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: November 10, 2015
    Assignee: iBiquity Digital Corporation
    Inventors: Brian W. Kroeger, Paul J. Peyla
  • Patent number: 8976013
    Abstract: A contact type tactile feedback apparatus and operational method of the contact type tactile feedback apparatus is provided. The contact type tactile feedback apparatus may enable an object to be in close contact with a power feedback portion to transfer a power sensed by a sensor, using a fixing portion, thereby enabling the object to recognize the power, intuitively.
    Type: Grant
    Filed: February 19, 2013
    Date of Patent: March 10, 2015
    Assignees: Samsung Electronics Co., Ltd., Industry-University Cooperation Foundation Sogang University
    Inventors: Joonah Park, Hyung Kew Lee, Eun Hyup Doh, Kwang Seok Yun
  • Patent number: 8957777
    Abstract: A method for establishing a connection between a first electronic computing device and a second electronic computing device includes moving the second electronic computing device so that it is proximal to the first electronic computing device. When the first electronic computing device detects the proximity of the first electronic computing device relative to the second electronic computing device, a radio on the first electronic device is set to a connectable and discoverable state. A wireless connection is automatically established between the first electronic computing device and the second electronic computing device. Data is transmitted between the first electronic computing device and the second electronic computing device.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: February 17, 2015
    Assignee: Welch Allyn, Inc.
    Inventors: Steven D. Baker, Braxton L. Lathrop
  • Patent number: 8941475
    Abstract: An apparatus for producing an electrosensory sensation to a body member (120). The apparatus comprises one or more conducting electrodes (106), each of which is provided with an insulator (108). When the body member (120) is proximate to the conducting electrode, the insulator prevents flow of direct current from the conducting electrode to the body member. A capacitive coupling over the insulator (108) is formed between the conducting electrode (106) and the body member (120). The conducting electrodes are driven by an electrical input which comprises a low-frequency component (114) in a frequency range between 10 Hz and 500 Hz. The capacitive coupling and electrical input are dimensioned to produce an electrosensory sensation. The apparatus is capable of producing the electrosensory sensation independently of any mechanical vibration of the one or more conducting electrodes (106) or insulators (108).
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: January 27, 2015
    Assignee: Senseg Oy
    Inventors: Ville Makinen, Petro Suvanto, Jukka Linjama
  • Patent number: 8896515
    Abstract: A backlight apparatus includes a first backlight part and a second backlight part. The first backlight part includes a plurality of first lamps. The second backlight part includes a plurality of second lamps. At least one first lamp of the first lamps is disposed between two second lamps of the second lamps.
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: November 25, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventor: Jae-Eun Um
  • Patent number: 8897379
    Abstract: A digital communication system comprising a host and a client, the host calls the client via two transmission lines. The host includes a processor, a first control unit, a second control unit, a high frequency transformer and an interface unit. The digital communication system utilizes the first control unit and the high frequency transformer to modulate outgoing signals. The digital communication system utilizes the second unit and the high frequency transformer to demodulate incoming signals.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: November 25, 2014
    Assignees: Fu Tai Hua Industry (Shenzhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Ren-Wen Huang, Yang Xin, Qiang You, Chong-Jin Ma, Tsung-Jen Chuang
  • Patent number: 8816832
    Abstract: Coupling circuit for coupling a power line communication device to a power line network, including a first network port coupled between a network phase line and a first network line, a second network port coupled between a network neutral line and a second network line, a third network port coupled between a network ground line and a third network line, a first differential modem port including a first terminal and a second terminal, a second differential modem port including a third terminal and a fourth terminal, a first transformer including a first network side winding and a first modem side winding, a second transformer including a second network side winding and a second modem side winding, the transformers including respective terminals, a center tap extending from the midpoint of the first network side winding to a terminal of the second network side winding and a plurality of capacitors.
    Type: Grant
    Filed: February 15, 2012
    Date of Patent: August 26, 2014
    Assignees: Sigma Designs Israel S.D.I Ltd., Alvarion Technologies Ltd
    Inventors: Uri Weiss, Dror Ben-Yehuda, Naftali Chayat
  • Patent number: 8816536
    Abstract: A system includes a dispenser and a transmitter. The dispenser is configured to support and dispense product. The dispenser includes: a housing; an antenna disposed and configured to receive electromagnetic energy that originates from the transmitter; a power supply disposed within the housing and configured to convert the electromagnetic energy received at the antenna into DC (direct current) power; a dispenser mechanism configured and disposed to dispense the product from the dispenser on command; a controller disposed in operable communication with the power supply and the dispenser mechanism; and, an actuator disposed in operable communication with the controller. Upon actuation of the actuator, and upon presence of the DC power, the controller is responsive to facilitate action by the dispenser mechanism to dispense the product. The transmitter is configured to transmit electromagnetic energy and is disposed in operable communication with the dispenser.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: August 26, 2014
    Assignee: Georgia-Pacific Consumer Products LP
    Inventors: Brian S. Borke, Andre Lanouette
  • Patent number: 8816830
    Abstract: The present invention further provides a motor control system, which controls a motor through a power line. The motor control system includes a control apparatus and an actuation apparatus. The control apparatus includes a controller and a first communication module electrically connected to the controller. The controller receives a command and converts the command into electrical control signals. The first communication module receives the electrical control signals from the controller and transmits the electrical control signals to the power line. The actuation apparatus includes a second communication module and a motor actuator electrically connected to the second communication module. The second communication module is connected to the power line to receive the electrical control signals from the control apparatus and convert the electrical control signals into a command. The motor actuator receives the command from the second communication module to change the power supplying to the motor.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: August 26, 2014
    Assignee: Legendaire Technology Co., Ltd.
    Inventors: Chun-Cheng Lai, Huang Hsiang Lin
  • Patent number: 8743975
    Abstract: A method for receiving signals over a power line network, within the power line network at least one transmitter and at least one receiver communicate via at least two channels, each of the channels having a respective feeding port of the at least one transmitter and a respective receiving port of the at least one receiver, and the receiver having at least two receiving ports. The method determines a channel characteristic of each of the channels, applies a receiving port selection criterion based on the channel characteristic, and selects an excluded receiving port among the at least two receiving ports based on the receiving port selection criterion, the excluded receiving port is not used during further communication.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: June 3, 2014
    Assignee: Sony Corporation
    Inventors: Lothar Stadelmeier, Andreas Schwager, Daniel Schneider
  • Patent number: 8710964
    Abstract: A reception circuit according to the present invention is a reception circuit (6) that operates based on a first power supply GND1 belonging to a first power supply system and receives, through an AC coupling element (10), a transmission signal V1 output by a transmission circuit (5) that operates based on a second power supply GND2 belonging to a second power supply system, the reception circuit including: a noise rejection unit (21) that generates a transmission-use signal V2a by reducing a signal level of noise between the power supplies generated in the AC coupling element (10) due to a potential difference between the first power supply GND1 and the second power supply GND2; and a reception buffer (22) that reproduces a data signal based on the transmission-use signal. This prevents a malfunction from occurring due to noise between the power supplies caused by a relative potential variation between the power supply of the transmission circuit and the power supply of the reception circuit.
    Type: Grant
    Filed: January 27, 2010
    Date of Patent: April 29, 2014
    Assignee: NEC Corporation
    Inventor: Shunichi Kaeriyama
  • Patent number: 8693949
    Abstract: A near-field RF communicator which is operable to perform a polling process to initiate communication with another near-field RF communicator in near-field range, wherein the near-field communicator is configured to perform a detection process, having a lower energy requirement than a polling process, to determine whether a near-field RF communicator is present in near-field range, and to perform the polling process in the event that the detection process indicates that a near-field RF communicator is present in near-field range.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: April 8, 2014
    Assignee: Broadcom Corporation
    Inventor: Philip Stewart Royston
  • Patent number: 8664937
    Abstract: Devices, methods, and systems for non-invasive energy consumption monitoring are described herein. One or more device embodiments include a transformer configured to couple the device to a circuit conductor that is coupled to an additional device, a detection module configured to detect a change in a power signal over the circuit conductor, and a transmission module configured to transmit a unique signal associated with the additional device over the circuit conductor if the change in the power signal meets or exceeds a particular threshold.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: March 4, 2014
    Assignee: Honeywell International Inc.
    Inventor: Radek Fisera
  • Patent number: 8570163
    Abstract: An apparatus for producing an electrosensory sensation to a body member (120). The apparatus comprises one or more conducting electrodes (106), each of which is provided with an insulator (108). When the body member (120) is proximate to the conducting electrode, the insulator prevents flow of direct current from the conducting electrode to the body member. A capacitive coupling over the insulator (108) is formed between the conducting electrode (106) and the body member (120). The conducting electrodes are driven by an electrical input which comprises a low-frequency component (114) in a frequency range between 10 Hz and 500 Hz. The capacitive coupling and electrical input are dimensioned to produce an electrosensory sensation. The apparatus is capable of producing the electrosensory sensation independently of any mechanical vibration of the one or more conducting electrodes (106) or insulators (108).
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: October 29, 2013
    Assignee: Sensey Oy
    Inventors: Ville Makinen, Petro Suvanto, Jukka Linjama
  • Patent number: 8552884
    Abstract: A power and signal distribution system comprises a converter unit connected to a plurality of control units. The converter unit and the control units are arranged in areas difficult to access, for instance on the sea bed. The converter unit is connected to a remote monitoring and supplying device via at least one cable connection. Each control unit has assigned thereto at least one production apparatus for crude oil or natural gas corresponding gate valves, chokes, biops, actuators. In some embodiments, the power and signal distribution system the converter unit comprises a data separation device and a voltage converter. The converted voltage from the voltage converter is transmitted together with data/signals from the converter unit to at least one of the control units.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: October 8, 2013
    Assignee: Cameron International Corporation
    Inventors: Klaus Biester, Norbert Lenz, Peter Kunow, Steffen Gebauer, Martin Trog, Volker Zabe
  • Patent number: 8442127
    Abstract: A method for receiving signals over a power line network, within the power line network at least one transmitter and at least one receiver communicate via at least two channels, each of the channels having a respective feeding port of the at least one transmitter and a respective receiving port of the at least one receiver, and the receiver having at least two receiving ports. The method determines a channel characteristic of each of the channels, applies a receiving port selection criterion based on the channel characteristic, and selects an excluded receiving port among the at least two receiving ports based on the receiving port selection criterion, the excluded receiving port is not used during further communication.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: May 14, 2013
    Assignee: Sony Corporation
    Inventors: Lothar Stadelmeier, Andreas Schwager, Daniel Schneider
  • Patent number: 8432293
    Abstract: A NFC communicator or NFC communications enabled device (1 or 2 or 100a) has a data store (108) to store data, a coupler (17 or 32 or 102) to couple inductively with the magnetic field of a radio frequency signal and a signal generator (109) to supply a radio frequency signal to the coupler. A modulator (110) is provided to modulate a radio frequency signal in accordance with data and a demodulator (114) is provided to extract data from a modulated radio frequency signal inductively coupled to the coupler. A controller (107) enables the NFC communicator or NFC communications enabled device both to initiate near field radio frequency communication with another near field RF communicator and to respond to near field radio frequency communication initiated by another near field RF communicator. The NFC communicator or NFC communications enabled device also has a power deliver (19 or 34 or 103) that derives power from a radio frequency signal inductively coupled to the coupler to charge a chargeable power supply.
    Type: Grant
    Filed: January 19, 2006
    Date of Patent: April 30, 2013
    Assignee: Innovision Research & Technology PLC
    Inventor: Peter Robert Symons
  • Patent number: 8330590
    Abstract: A user interface feedback apparatus includes an operable element, a sensor, a processing unit, and a tactile control module. The operable element has a two-layer structure made up of a conductor and an insulator. The sensor detects, in the form of user contact information, at least a user contact position with respect to the insulator of the operable element. The processing unit acquires the detected information from the sensor, and determines parameters for an electrical signal to be output to the conductor. The tactile control module controls the frictional force between the insulator and the user by outputting to the conductor an electrical signal regulated by the parameters determined by the processing unit.
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: December 11, 2012
    Assignee: Sony Corporation
    Inventors: Ivan Poupyrev, Shigeaki Maruyama
  • Patent number: 8264370
    Abstract: A power and signal distribution system comprises a converter unit connected to a plurality of control units. The converter unit and the control units are arranged in areas difficult to access, for instance on the sea bed. The converter unit is connected to a remote monitoring and supplying device via at least one cable connection. Each control unit has assigned thereto at least one production apparatus for crude oil or natural gas corresponding gate valves, chokes, biops, actuators. In some embodiments, the power and signal distribution system the converter unit comprises a data separation device and a voltage converter. The converted voltage from the voltage converter is transmitted together with data/signals from the converter unit to at least one of the control units.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: September 11, 2012
    Assignee: Cameron International Corporation
    Inventors: Klaus Biester, Norbert Lenz, Peter Kunow, Steffen Gebauer, Martin Trog, Volker Zabe
  • Patent number: 8223008
    Abstract: Provided are a device and method for detecting a wiretapping device using a power line and nullifying the wiretapping device. More particularly, a device and method for preventing wiretapping, which sense a wiretapping signal from a power line and transmit a noise signal to the power line, are provided. The device for preventing wiretapping includes: a signal detector for receiving signals from a power line and filtering the received signals in at least one frequency band; a controller for receiving the filtered signal from the signal detector and determining whether a wiretapping signal exists; and a noise signal output unit for transmitting a noise signal to the power line according to whether or not the wiretapping signal exists. The device can detect wiretapping and simultaneously nullify the function of the wiretapping device by detecting a wiretapping signal from a power line and transmitting a noise signal having a frequency corresponding to a frequency band of the wiretapping signal.
    Type: Grant
    Filed: April 14, 2008
    Date of Patent: July 17, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kyung Hoon Lee, In Ho Hwang, Sea Hoon Ju, Seung Kab Ryu, Jin Chun Wang
  • Patent number: 8174373
    Abstract: An apparatus for producing an electrosensory sensation to a body member (120). The apparatus comprises one or more conducting electrodes (106), each of which is provided with an insulator (108). When the body member (120) is proximate to the conducting electrode, the insulator prevents flow of direct current from the conducting electrode to the body member. A capacitive coupling over the insulator (108) is formed between the conducting electrode (106) and the body member (120). The conducting electrodes are driven by an electrical input which comprises a low-frequency component (114) in a frequency range between 10 Hz and 500 Hz. The capacitive coupling and electrical input are dimensioned to produce an electrosensory sensation. The apparatus is capable of producing the electrosensory sensation independently of any mechanical vibration of the one or more conducting electrodes (106) or insulators (108).
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: May 8, 2012
    Assignee: Senseg Oy
    Inventors: Ville Makinen, Petro Suvanto, Jukka Linjama
  • Patent number: 8160162
    Abstract: A method for transmitting signals over a power line network, wherein within the power line network at least one transmitter and at least one receiver communicate via at least two channels, each channel including a respective feeding port of at least one transmitter and the respective receiving port of the at least one transmitter and transmitter including at least two feeding ports. The method: determines a channel characteristic of each of the channels; applies a feeding port selection criterion based on the channel characteristic; and selects an excluded feeding port among the at least two feeding ports based on the feeding port selection criterion, wherein the excluded feeding port is not used during further communication. A corresponding power line communication modem can implement the method.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: April 17, 2012
    Assignee: Sony Corporation
    Inventors: Lothar Stadelmeier, Andreas Schwager, Daniel Schneider
  • Patent number: 8093745
    Abstract: 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 that couples a communications signal from the power line, (b) separating the power frequency voltage from the communications signal, and (c) determining a value of a parameter of the power frequency current from the power frequency voltage. There is also provided a system and an apparatus for measuring the parameter.
    Type: Grant
    Filed: July 7, 2006
    Date of Patent: January 10, 2012
    Assignee: Ambient Corporation
    Inventor: Yehuda Cern
  • Patent number: 8026798
    Abstract: An apparatus for presenting a time-variant information element in a vehicle, which has a steering wheel (1602), comprises one or more remotely and individually controllable tactile pads (1620), which produce a tactile sensation in response to a respective pad output signal, which is produced by a controller (CTRL). The tactile pads are positioned or adapted to be positioned on the steering wheel (1602) or proximate to it, such that they can be touched by at least one hand (1610,1612) of the vehicle driver while driving the vehicle. The apparatus further comprises means for determining the time-variant information element to be presented and for applying the determined time-variant information element to the controller and means for encoding the determined time-variant information element by the controller into temporal variations of the one or more pad output signals.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: September 27, 2011
    Assignee: Senseg Ltd.
    Inventors: Ville Makinen, Jukka Linjama, Moaffak Ahmed
  • Patent number: 7924144
    Abstract: An apparatus for producing an electrosensory sensation to a body member (120). The apparatus comprises one or more conducting electrodes (106), each of which is provided with an insulator (108). When the body member (120) is proximate to the conducting electrode, the insulator prevents flow of direct current from the conducting electrode to the body member. A capacitive coupling over the insulator (108) is formed between the conducting electrode (106) and the body member (120). The conducting electrodes are driven by an electrical input which comprises a low-frequency component (114) in a frequency range between 10 Hz and 500 Hz. The capacitive coupling and electrical input are dimensioned to produce an electrosensory sensation. The apparatus is capable of producing the electrosensory sensation independently of any mechanical vibration of the one or more conducting electrodes (106) or insulators (108).
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: April 12, 2011
    Assignee: Senseg Ltd.
    Inventors: Ville Makinen, Petro Suvanto, Jukka Linjama
  • Patent number: 7852207
    Abstract: A method for providing power line communications in a multi-unit building is provided. One embodiment includes determining the quality of a communication link associated with each of a plurality of communication nodes, selecting one of the plurality of communication nodes based, at least in part, on the quality of the communication links associated with the communication nodes; and establishing communications with an external network through the selected one communication node. In addition, in some embodiments at least one of the communication links associated with the plurality of communication nodes includes a non-conductive radio frequency coupled segment.
    Type: Grant
    Filed: February 14, 2006
    Date of Patent: December 14, 2010
    Assignee: Current Technologies, LLC
    Inventors: William H. Berkman, Alice Shirley Filemyr, Robert Douglas Kehn
  • Patent number: 7840181
    Abstract: A first bias circuit outputs a first direct-current voltage to charge a first capacitor based on a clock signal. A second bias that outputs a second direct-current voltage to charge a second capacitor based on a clock signal. A first MOS transistor has a gate and a source. The first direct-current voltage is applied between the gate and the source of the first MOS transistor to bias the gate of the first MOS transistor. A second MOS transistor has a gate and a source, and a drain connected to the source of the first MOS transistor. The second direct-current voltage is applied between the gate and the source of the second MOS transistor to bias the gate of the second MOS transistor. A coupling capacitor has a first end connected to the source of the first MOS transistor, and a second end to which an alternating-current signal is input.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: November 23, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Toshiyuki Umeda, Shoji Ootaka
  • Patent number: 7796025
    Abstract: A power line communication device configured to facilitate communications over a low voltage power line between a downstream user device and an external power line communication device is provided. In one embodiment, the device may include a communication module configured to communicate over a low voltage power line and a controller configured to control the module. The controller is configured to operate the module in a first configuration in which all repeating is disabled; and a second configuration wherein upstream repeating is enabled and downstream repeating is disabled. The controller may transition from the first configuration to the second configuration in response to a command received via the low voltage power line or upon determining that a triggering event has been detected such as an unacceptable data rate, error rate, or noise detection. In some embodiments, the device may form part of a utility meter and also transmit utility data to the power line communication device.
    Type: Grant
    Filed: March 27, 2006
    Date of Patent: September 14, 2010
    Assignee: Current Technologies, LLC
    Inventor: William H. Berkman
  • Patent number: 7795994
    Abstract: A power line coupler for communicating data signals over a power distribution system having a first and second overhead energized medium voltage power line conductors is provided. In one embodiment, the coupler includes a first lightening arrestor having a first end and a second end, wherein the first end of the first arrestor is connected to the first power line conductor. The coupler further includes a first high frequency impedance having a first end connected to the second end of the first lightening arrestor and the first impedance having a second end connected to a neutral conductor of the power line distribution system. The coupler may further include a second lightening arrestor having a first end and a second end, wherein the first end of the second arrestor is connected to the second power line conductor. The coupler further including a second high frequency impedance having a first end connected to the second end of the second lightening arrestor and a second end connected to the neutral conductor.
    Type: Grant
    Filed: June 26, 2007
    Date of Patent: September 14, 2010
    Assignee: Current Technologies, LLC
    Inventor: William O. Radtke
  • Patent number: 7714682
    Abstract: A device and method for attenuating high frequency signals on a power line carrying power is provided. In one embodiment the device may include a toroid shaped core formed of magnetically permeable material and having an inner surface to be disposed substantially around the entire circumference of the power line and a winding formed of a conductor that encircles the toroid. The conductor may include a first spiral coil comprised of a plurality of insulated loops such as concentric loops. The first coil is configured to act as an impedance to high frequency signals traversing the conductor and to allow signals below one hundred hertz to traverse the conductor substantially unimpeded to thereby prevent saturation of the core by the power carried by the power line.
    Type: Grant
    Filed: June 21, 2007
    Date of Patent: May 11, 2010
    Assignee: Current Technologies, LLC
    Inventor: William O. Radtke
  • Patent number: 7667344
    Abstract: In one embodiment, a system for coupling communications signals to an underground medium-voltage power line includes a medium-voltage power line, a ground conductor, one or more ferrites, and a low-voltage communications line. The medium-voltage power line includes a center phase conductor and a concentric neutral conductor. The ground conductor couples the concentric neutral conductor to a ground connection. The one or more ferrites substantially surround at least a portion of the ground conductor. The low-voltage communications line includes a first conductor and a second conductor. The first conductor is coupled to the ground conductor between the one or more ferrites and the concentric neutral conductor. And the second conductor is coupled to the ground conductor between the one or more ferrites and the ground connection.
    Type: Grant
    Filed: June 23, 2006
    Date of Patent: February 23, 2010
    Assignee: International Broadband Electric Communications, Inc.
    Inventors: Brent R. Zitting, Thomas R. Parker, III, William D. Hudson
  • Patent number: 7667594
    Abstract: A sensor of this comprises a receiving section that receives a signal that is sent from outside, a circuit whose impedance changes irreversibly in accordance with an environmental change, a measurement section that measures the impedance of the circuit in an event that a signal is received by the receiving section, and a sending section that sends data representing a measurement result of the measurement section.
    Type: Grant
    Filed: October 16, 2006
    Date of Patent: February 23, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hiroyuki Funo, Masao Watanabe, Kiyoshi Iida, Ryota Mizutani, Yasuaki Konishi
  • Patent number: 7537172
    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: May 26, 2009
    Assignee: Comverge, Inc.
    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
  • Patent number: 7510126
    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: March 31, 2009
    Assignee: Comverge, Inc.
    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
  • Publication number: 20080297339
    Abstract: An apparatus for converting a low voltage alternating current (AC) wiring circuit to a high speed data communications link, comprising a primary coupling circuit and a secondary coupling circuit. The apparatus provides low voltage AC power to a data device and couples data signals between the data device and the AC power line via the converted low voltage AC wiring circuit. An example is provided for retrofitting a door chime system to a high speed data link such as a video camera system.
    Type: Application
    Filed: July 18, 2008
    Publication date: December 4, 2008
    Inventors: David K. Mathews, Alfred C. Griffin
  • Patent number: 7450001
    Abstract: A power line communications system (PLCS) that provides communications to one or more user devices by repeating data packets on the power distribution network is provided. The PLCS may employ any or all of the MV power line conductors and/or the neutral conductor and be dynamically and remotely transitioned to one of a plurality of potential configurations.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: November 11, 2008
    Assignee: Current Technologies, LLC
    Inventor: William H. Berkman
  • Publication number: 20080238656
    Abstract: In one embodiment, a load connected to power sourcing equipment (PSE) compatible with a Power over Ethernet (PoE) standard is characterized to determine whether the load corresponds to a valid powered device (PD). A switching signal having a first frequency is generated on the isolated side and used to generate an electrical current through the isolated-side primary coil of a power transformer in the PSE. A first voltage measurement, corresponding to a first line-side voltage across the transformer's secondary coil, is generated on the isolated side, e.g., using an isolated-side auxiliary transformer coil. The load is characterized based on the first voltage measurement and the first frequency. To compensate for voltage offset, a second voltage measurement can be generated corresponding to a second frequency of the switching signal, where the load is then characterized based on the first and second voltage measurements and frequencies.
    Type: Application
    Filed: March 28, 2007
    Publication date: October 2, 2008
    Applicant: AGERE SYSTEMS INC.
    Inventors: Luis de la Torre Vega, Fadi Saibi
  • Patent number: 7369045
    Abstract: A device is provided for monitoring an electric overhead line, which device is constituted by an independently operating real time multisensor for mounting in a position on a span of the overhead line. The device has a built-in transmitter for transmitting sensor signals to a remote central, and comprises a laser range finder for measuring distance to the ground beneath the overhead line, as well as a camera for visual inspection of the line and its surroundings.
    Type: Grant
    Filed: October 7, 2003
    Date of Patent: May 6, 2008
    Inventor: Roger Hansen
  • Patent number: 7352281
    Abstract: A data display system including a plurality of data sources; a data transmitter coupled to the data sources and to a transmission network comprising a power line; wherein the data transmitter comprises means for modulating the data as a frequency modulated carrier and means for transmitting the carrier over the power line; and a plurality of gauges each having a display and coupled to the power line, and a data receiver comprising means for demodulating the carrier and means for translating the data to the display. The gauges are coupled to the data transmitter only by the power line, disregarding any ground connections, and the power line provides power to the gauges and the data transmitter.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: April 1, 2008
    Assignee: Instrument Systems Inc.
    Inventor: W. Timothy Stevenson
  • Patent number: 7336193
    Abstract: A device for monitoring a leakage current of a surge arrester has a measuring element for detecting a leakage current in a leakage current circuit. A filter assembly filters the leakage current in order to extract a third harmonic oscillation which is evaluated by an evaluation circuit with respect to the value thereof. The evaluation circuit delivers at least one warning signal to a display device. In a preferred embodiment, three display devices operating as a signaling light are provided. A power supply for the used circuits is obtainable by way of a transformer which extracts a necessary auxiliary zero-potential energy contained in the leakage current and with the aid of a main power supply unit connected to the transformer.
    Type: Grant
    Filed: September 16, 2004
    Date of Patent: February 26, 2008
    Assignee: Siemens Aktiengesellschaft
    Inventors: Haiko Schillert, Matthias Schubert, Kai Steinfeld
  • Publication number: 20080007416
    Abstract: 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 that couples a communications signal from the power line, (b) separating the power frequency voltage from the communications signal, and (c) determining a value of a parameter of the power frequency current from the power frequency voltage. There is also provided a system and an apparatus for measuring the parameter.
    Type: Application
    Filed: July 7, 2006
    Publication date: January 10, 2008
    Inventor: Yehuda Cern
  • Patent number: 7312694
    Abstract: Capacitive couplers and methods for communicating data over an electrical power delivery system are disclosed. A device for coupling a signal onto a conductor of an electrical power delivery system includes a conductive member having a length of at least six inches but less than 200 feet and a data signal generator connected to the conductive member for supplying a data signal to the conductive member. The conductive member is adapted to capacitively couple the data signal onto the conductor. The conductive member may comprise an outer layer of a coaxial cable wherein an inner conductor of the coaxial cable is adapted to be connected to the conductor of the electrical power delivery system. The conductor may comprise a grounding wire of a surge arrester wherein the conductive member comprises a conductive medium adapted to be wrapped around the grounding wire. A method of installing a device for capacitively coupling a signal onto a conductor of an electrical power delivery system is also disclosed.
    Type: Grant
    Filed: March 15, 2004
    Date of Patent: December 25, 2007
    Assignee: Ameren Corporation
    Inventor: Andrew Sugg
  • Patent number: 7307511
    Abstract: The last portion of the electrical distribution system is used to provide high-speed communications to residential homes. An aggregation point interfaces a medium voltage power line with a point-of-presence, and a power line bridge enables flow of communications signals between the medium voltage power line and a low voltage power line across a distribution transformer.
    Type: Grant
    Filed: May 23, 2005
    Date of Patent: December 11, 2007
    Assignee: Current Technologies, LLC
    Inventor: Paul A. Kline
  • Patent number: 7265664
    Abstract: A power line communications system (PLCS) that provides communications to one or more user devices by repeating data packets on the power distribution network is provided. The PLCS may employ any or all of the MV power line conductors and/or the neutral conductor and be dynamically and remotely transitioned to one of a plurality of potential configurations.
    Type: Grant
    Filed: April 4, 2005
    Date of Patent: September 4, 2007
    Assignee: Current Technologies, LLC
    Inventor: William H. Berkman
  • Patent number: 7215245
    Abstract: An activator circuit responsive to power line disturbances. In condition of false alarm, the user will toggle a local light switch causing electrical disturbances on the power line. The activator circuit detects these disturbances and activates an output, which is further connected to the silence function on the detector, silencing the false alarm. The activator circuit comprising a power line interface circuit, a signal conditioning circuit, a threshold detector circuit, a pulse train comparison circuit and an output circuit.
    Type: Grant
    Filed: May 31, 2005
    Date of Patent: May 8, 2007
    Inventor: Fu Ching Lee
  • Patent number: 7167090
    Abstract: A method and apparatus for performing far-field power extraction are presented. The method includes receiving an electromagnetic radiation signal, rectifying the signal to produce a direct current (D.C.) voltage and providing the D.C. voltage to a circuit. A far-field power extraction circuit includes an antenna for receiving an electromagnetic radiation signal, a rectifier for rectifying the electromagnetic radiation signal. The circuit may further include a charge pump for amplifying the rectified voltage, an impedance matching network for coupling the antenna to the rectifier and a feedback tuning circuit for optimizing performance of the extraction circuit.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: January 23, 2007
    Assignee: Massachusetts Institute of Technology
    Inventors: Soumyajit Mandal, Rahul Sarpeshkar
  • Patent number: 7167089
    Abstract: 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 into analog signals, which are amplified and then carried via a power cord; and a decoding horn provided with a power supply voltage regulator circuit, a reference voltage circuit, an RLC oscillation circuit, a comparison circuit, a CPU circuit, and a horn voice driving circuit to decode and compare a received burglar-alarming signal and drive a horn to make vocal and sounding warnings. The burglar alarm is controlled via different frequencies that represent codes 1 and 0, or a base frequency and different pulse widths representing codes 1 and 0, so that the signals are carriable via the power cord without interference from noise on the power word.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: January 23, 2007
    Inventor: Tse-Hsing Chen
  • Patent number: 7163158
    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 13, 2005
    Date of Patent: January 16, 2007
    Assignees: Comverge, Inc., Emerson Electric, Inc.
    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
  • Patent number: 7164344
    Abstract: A non-contact IC card reading/writing apparatus having a superior reception characteristic includes a loop antenna, a resonant circuit unit, a wireless transmitting unit, and a wireless receiving unit. The resonant circuit unit, the wireless transmitting unit, and the wireless receiving unit are coupled to each other via any one of a directional coupler, a circulator, and an isolator.
    Type: Grant
    Filed: December 24, 2003
    Date of Patent: January 16, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Futoshi Deguchi, Hiroshi Yoshinaga, Akihiko Hirata, Masahiko Tanaka