US20020110311A1 - Apparatus and method for providing a power line communication device for safe transmission of high-frequency, high-bandwidth signals over existing power distribution lines - Google Patents

Apparatus and method for providing a power line communication device for safe transmission of high-frequency, high-bandwidth signals over existing power distribution lines Download PDF

Info

Publication number
US20020110311A1
US20020110311A1 US09915459 US91545901A US2002110311A1 US 20020110311 A1 US20020110311 A1 US 20020110311A1 US 09915459 US09915459 US 09915459 US 91545901 A US91545901 A US 91545901A US 2002110311 A1 US2002110311 A1 US 2002110311A1
Authority
US
Grant status
Application
Patent type
Prior art keywords
high
coupling
power line
signals
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US09915459
Inventor
Paul Kline
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Current Technologies LLC
Original Assignee
Current Technologies LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Images

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/46Processes or apparatus adapted for installing optical fibres or optical cables
    • G02B6/48Overhead installation
    • G02B6/483Installation of aerial type
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G11/00Arrangements of electric cables or lines between relatively-movable parts
    • H02G11/02Arrangements of electric cables or lines between relatively-movable parts using take-up reel or drum
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B3/00Line transmission systems
    • H04B3/54Systems for transmission via power distribution lines
    • H04B3/56Circuits for coupling, blocking, or by-passing of signals
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/24Coupling light guides
    • G02B6/42Coupling light guides with opto-electronic elements
    • G02B6/4201Packages, e.g. shape, construction, internal or external details
    • G02B6/4246Bidirectionally operating package structures
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B2203/00Indexing scheme relating to line transmission systems
    • H04B2203/54Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5462Systems for power line communications
    • H04B2203/5483Systems for power line communications using coupling circuits
    • H04B2203/5487Systems for power line communications using coupling circuits cables

Abstract

The fiber optic isolator of the present invention transports data signals between high voltage power lines and a communications interface device, bypassing a step down transformer to low voltage power. The communication interface device includes a low voltage power line as well as telecommunications and wireless interfaces. The signals are coupled and de-coupled off of a high voltage power line by a power line coupler. The fiber optic isolator gets the signals (in light form) and transports them to and from the communications interface device. This insulates the system from current flow between the high voltage power lines and the communications interface.

Description

    CROSS REFERENCE TO RELATED APPLICATIONS
  • This application claims priority under 35 U.S.C. §119(e) from provisional application No. 60/268,519, filed Feb. 14, 2001. The 60/268,519 provisional application is incorporated by reference herein, in its entirety, for all purposes.[0001]
  • FIELD OF THE INVENTION
  • The present invention is drawn to a power line communications system for transmitting and receiving high frequency, high bandwidth signals safely over power lines. The system comprises a power line coupler, a fiber optic isolator and a communications interface to various media. The present invention is related to a portion of the system concerned with the fiber optic isolator and communications interface. [0002]
  • BACKGROUND
  • With well-established power distribution systems (PDSs) already in place throughout much of the world, an efficient power line communication system (PLCS) could provide more users with high-speed telecommunications access with the minimum investment of “add-on” devices. [0003]
  • The infrastructure for providing broadband Internet access is presently insufficient to meet demand. A power distribution system (PDS), however, could be an ideal vehicle for carrying communications signals in order to meet this demand. Development of a power line communication system (PLCS) would therefore provide more users with high-speed telecommunications access. Since the PDS is already built, the time required to implement a PLCS would be minimal. [0004]
  • Of course, there are a series of problems to be overcome before a PDS can be used as an efficient, high-speed power line communications medium. The following issues, while not exhaustive, are representative considerations of what such a system would require in order to use an existing PDS to transport communication data: a sufficient signal to noise ratio, non-disruptive installation of the “add on” device; safety means such that users and circuitry are protected and isolated from stray current; a signal carrier with a frequency sufficient to support high data transfer rate (e.g. 10 Mbps); means for the data signal to bypass a distribution transformer without loss; bidirectional data transmission; coupling devices that do not interfere with data signal handling; an independent power source for electronic conditioning circuitry at power line interfaces; a power line interface that is impervious to extreme environmental conditions; and means for the data to be readily routed to intended locations without loss. [0005]
  • Given the advantages of being able to use the existing PDS for high-speed data communication, an effective method is required to couple and decouple the signals onto and off of a high or medium voltage power line. The coupling and decoupling of the data signal must be at a level sufficient to maintain an adequate signal to noise ratio in order to discern between the data signal and noise or interference on the line. For any method developed, a significant challenge lies in being able to mitigate the adverse effects of the high voltage 50-60 Hz power signal might have on the communications signal. Additionally, safety from high voltage is of concern. [0006]
  • Whyte, et al. in U.S. Pat. No. 4,142,178 observe: “The use of the distribution network conductors for the transmission of carrier communication signals presents many problems not encountered in high voltage transmission line communication systems. Some of these problems include the poor high frequency impedance characteristics and the high level of electrical noise present on the distribution network conductors which, along with the plurality of distribution transformers and power factor correction capacitors attached to the distribution network, rapidly attenuate the communication signals.”[0007]
  • Whyte teaches using a direct circuitry from a line coupler to a remote data terminal thus bypassing the PDS transformer, which is the primary source of data attenuation. The main use for the transmission of communication signals addressed by Whyte was to perform distribution functions such as automatic reading of utility meters and selective load control. Those functions are still desirable, but the function of high speed, high bandwidth communication transmission preclude direct connection from a transformer to remote data terminals economically. [0008]
  • Use of a low voltage power distribution system as a data communications carrier within a premise is well known. Abraham, U.S. Pat. No. 6,014,386 teaches a communications network within a building using the AC wiring as the infrastructure of the network. Different types of appliances using digital signals may be included within the network. The Abraham patent uses an impedance matching scheme to direct a specific signal to a specific location. Couplers at a control location have unique impedances that are matched by corresponding couplers elsewhere within the building. Thus, specific signals will be de-coupled based an impedance match. Abraham also teaches the use of dielectric inductors in circuit with capacitors to tune the impedance characteristics of couplers. [0009]
  • In a similar manner, Abraham in U.S. Pat. No. 5,625,863 teaches the distribution of multiple video signals distributed within a building using the building's AC wiring as the distribution system. Unique impedance settings direct the signals to unique locations. Abraham in U.S. Pat. No. 5,818,127 describes a distribution system for FM signals within a building by use of the building's AC wiring. [0010]
  • Abraham in U.S. Pat. No. 5,717,685 describes the coupling of data signal on and off a building's AC wiring infrastructure. His invention uses capacitive circuits in serial connection. The circuitry also includes air-core transformers. This arrangement allows impedance tuning of the specific couplers. While Abraham claims a system with a fiber optic source for an input signal in his U.S. Pat. No. 6,014,386 patent, there is no description as to the use of fiber optic isolators. [0011]
  • Abraham also states that the utility firm may use the communications system to communicate utility meter information over the PDS. [0012]
  • Methods for avoidance of distribution transformers are well known. Perkins in a series of patents including U.S. Pat. No. 4,473,816 teaches a communications signal bypassing a multi-phase power transformer where the signal uses the PDS as a carrier. The signal is bidirectional and uses conductive material to affect the bypass. The invention uses multiple capacitors in parallel to neutralize the coupling impedance. Further, the winding ratio, R, between the primary and secondary windings ratio is maintained in the signal frequency across the signal bypass. Signal carrier frequency is in the 3-10 KHz range. Similarly, Perkins in U.S. Pat. No. 4,473,817 teaches a communications signal bypassing a single-phase power transformer. [0013]
  • Kennon, U.S. Pat. No. 4,644,321 uses a non-intrusive coupler to capture the data signal. Kennon teaches the use of a toroid having a multiplicity of turns of a conductor that is in circuit with an amplifier and receiver. The toroid core is non-conductive. The signal thus inductively de-coupled is amplified and used for a load management and filed configuration utility terminal. The system requires a battery for circuitry management. [0014]
  • Brown, U.S. Pat. No. 5,949,327 teaches the use of transformer bypass by coupling using capacitors connected to the primary and secondary terminals of the step transformer. Brown recognizes the need for multiple couplings at different points within the EDN (Electrical Distribution Network or, as referred to in the present description as PDS). Brown also teaches that the communication system use a high frequency signal carrier technique such as CDMA. [0015]
  • Moore, U.S. Pat. No. 5,210,519, describes a communication system that couples data signal from a transmission source using an inductor and de-couples the data at the receiver. This methodology is applied in a closed network and requires selective de-coupling as opposed to routing of the signal. Further, Moore teaches the use of a second transformer for reversing any inductor core saturation that may have occurred in the data de-coupling. This method requires time division of the data coupler between data coupling and saturation neutralization. [0016]
  • Dzung, European Pat. Application EP948143, describes a high voltage power line communication system that combines multiple source data signals, couples the combined signal onto multiple power lines using capacitive coupling and de-couples and demodulates the signals, separating and converting the signals back to the original form at the receiver. [0017]
  • Power lines can be located in areas with extreme environmental conditions. [0018]
  • Thus, the mechanical design must ensure proper operation when exposed to these extreme conditions and also maintain the required level of safety. Furthermore, any methods developed should be designed so as to have minimal impact to service of customers during installation. [0019]
  • As stated above, public safety is an absolute requirement. Any system using the PDS must isolate the end user (and public in general) from exposure to electric current. The PDS steps medium and high voltage power down to low voltage power (approximately in the 100-240 volt range) using transformers. Transformers are designed to filter out and ground high frequency signals as a safety precaution. Since a high frequency signal carrier is the ideal medium for high bandwidth data transfer, a communications data delivery system needs to circumvent the transformer filtration process while preserving safety protection. [0020]
  • SUMMARY OF THE INVENTION
  • It is an object of the present invention to provide a safe interface to a power line coupler for use with a power line communication system (PLCS). [0021]
  • It is still another object of the present invention to provide a bypass between a high voltage power line coupler and across a power distribution transformer. [0022]
  • It is a further object of the present invention to provide a bypass across a power distribution transformer wherein the data signal is preserved and consistent on either side of each of the transformer. [0023]
  • It is yet another object of the present invention to provide electrical current isolation between components and circuits within the PLCS by use of dielectric materials between components of the PLCS. [0024]
  • It is another object of the present invention to provide a high speed power line communication system (PLCS) using inductive signal coupling where the coupler's core stay's unsaturated. [0025]
  • It is yet another object of the present invention to provide a PLCS that performs data packet management. [0026]
  • It is a further object of the present invention to provide a power line coupler for use with a PLCS that is non-intrusive. [0027]
  • It is still a further object of the present invention to provide a power line coupler for use with a PLCS that inductively draws operating power from the power line. [0028]
  • It is a further object of the present invention to provide a power line coupler device for use with a PLCS that is self-contained and is nearly impervious to environmental conditions. [0029]
  • It is another object of the present invention to provide a PLCS that uses a toroid inductor to inductively couple and de-couple signals to and from a power line. [0030]
  • It is yet another object of the present invention to provide a power line coupler that provides an electro-optical transducer to interface with a fiber optic insulator. [0031]
  • It is still another object of the present invention to provide a non-intrusive power line coupler that is hinged for ease of installation. [0032]
  • It is still a further object of the present invention to provide a quality monitoring feedback system whereby a power company. [0033]
  • The PDS topology can be used to deliver high-speed communications to residential homes in a cost effective way. Applications for such communication systems include high speed Internet, telephony, video conferencing and video delivery. This recitation of applications is not meant to be exhaustive. [0034]
  • The system involves coupling and de-coupling communications data between a data source and a PDS. High frequency signals allow high bandwidth transfers (the higher the frequency of the data carrier, the more cycles per unit time available for data transfer). The carrier should exhibit high signal to noise characteristics relative to the underlying system of a 50 or 60 Hz PDS. (The U.S. standard is 60 Hz, but most countries use a 50 cycle per second power system.) [0035]
  • The data signals are coupled on to and off of the power line with a power line coupler (PLC). One embodiment of the present invention uses an inductive method to couple and de-couple data signals off of the power line. A toroid with conductive windings is placed around the power line. This method effectively provides a transformer between the power line and the PLC thus facilitating the transmission and receiving of the data signal. For the PLC side of the transformer, the number of windings and the orientation of the windings around the magnetic toroid is guided by the desire to maximize the flux linkage. [0036]
  • The type of signal used on this channel can be almost any signal used in communications (CDMA, TDMA, FDM, OFDM to name a few). A wideband signal such as CDMA that is relatively flat in the spectral domain is preferred to minimize radiated interference to other systems while delivering high data rates. [0037]
  • Since communications signals are very high frequency, a step down transformer would filter a signal coupled on the power line. The present invention avoids this by bypassing the transformer with a power line bridge (PLB). The PLB de-couples data signals from the medium or high voltage line a short distance from a transformer. The PLB interfaces between the power line on the primary of the transformer and the LV line on the secondary of the transformer. (The primary is the side of the transformer where the relatively high voltage enters; the secondary is the side of the transformer where the stepped down, lower voltage exits the transformer.) [0038]
  • The PLB is used to prevent the relatively high voltage from passing to the transformer's secondary side yet allowing the communications signal to pass between the PDS on either side of the transformer by using an isolator. A preferred embodiment of the present invention is to use an optical medium. The de-coupled signal from the relatively high voltage power line is converted to light energy (i.e. light signal) by using a transducer and transmitting the light signal over a nonelectric conductive but light conductive medium. In a like manner, light signals from the light conductive medium are converted to electrical signals for coupling to the power line. [0039]
  • One embodiment of the present invention uses a fiber optic cable as the isolator. The isolator is a light pipe that bypasses the transformer. Fiber optic cable is a dielectric thus insulating the PDS on the secondary transformer side from relatively high voltage. [0040]
  • The signal is next modulated and de-modulated by a first modem. The signal goes through a data router and then a second modem. The router serves the purpose of matching data packets with specific messages and destinations. The second modem modulates and de-modulates the signal in a form consistent with transport over a LV power line. [0041]
  • The light signal is converted back to an electronic signal and then coupled onto the LV power line (LV coupler). In an embodiment of the present invention a second isolator is inserted in the system between the second modem and the data router for conversion of the light signal to electrical signal. Additionally the isolator proves an additional layer of safety because of the dielectric quality of the second isolator. [0042]
  • The high speed, high frequency signal is then delivered, over the LV power line to the end user's residence or place of business. A power line interface device (PLID) serves as the gateway between the end user's various data appliances and local area network (LAN) and the high speed data transport.[0043]
  • BRIEF DESCRIPTION OF DRAWINGS
  • FIG. 1 discloses the typical electric distribution topology of the prior art. [0044]
  • FIG. 2 illustrates typical electric distribution topology modified for communication in accordance with the present invention. [0045]
  • FIG. 3 illustrates a block diagram of the AP in accordance with the present invention. [0046]
  • FIG. 4 illustrates a block diagram of the PLB in accordance with the present invention. [0047]
  • FIG. 5 illustrates a conceptual diagram of a power line coupling in accordance with one embodiment of the present invention. [0048]
  • FIG. 6 illustrates a diagram of a self-contained power line coupling in accordance with one embodiment of the present invention.[0049]
  • DETAILED DESCRIPTION OF THE INVENTION
  • Referring to FIG. 1, the typical electric distribution topology of the prior art is illustrated. Medium voltage (MV) half loop power delivery system, as illustrated, is common to the U.S. PDS. Many transformers are used. Each transformer services a few homes or small businesses. Many other countries, such as the European states, use a high voltage delivery system with many end users serviced from a transformer. The present invention applies to either environment. [0050]
  • The present invention may be implemented in a high voltage and medium voltage PDS environment. For purposes of this description and subsequent claims, the high and medium voltage portion of the PDS is described as “primary” voltage (PV). The low voltage portion of the system is described alternatively as LV or “secondary” voltage (SV). These terms are arbitrary but used to improve clarity of the description. Similarly, the side of a transfer where the PV line enters is called the “primary” side. The SV side of the transformer is referred to as the “secondary” side of the transformer. [0051]
  • A sub-station [0052] 10 delivers PV power to a half loop distribution point, pole dip 12. The power is delivered in parallel to multiple transformers 20 over a PV power line 14. After the transformer is stepped down to a SV power (in the range of 100 to 240 VAC), several end user premises 26 are serviced via a SV power line 24. The step down transformer 20 grounds high frequency signals for safety purposes. Since a high data transfer (high bandwidth) power line communication delivery system requires a high frequency signal carrier, an object of the present invention is to avoid the removal of the high frequency signal by the transformer 20. It is noted that the PV power lines 14 may be above ground or subterranean. The transformers 20 may be aerial mounted on a pole or pad mounted on the ground.
  • Referring to FIG. 2 the typical electric distribution topology as shown in FIG. 1 as modified for communication in accordance with the present invention is illustrated. A point of presence [0053] 40 (POP), the terminus for high frequency, high bandwidth data signal, serves as the gateway to the digital communications world. It both sends and receives data to the end user over the PDS. A backhaul link 42 connects the POP 40. Data is manipulated and coupled and de-coupled from the PV power line at an aggregation point 44 (AP). A more detailed description of the AP follows in the FIG. 3 discussion.
  • The PDS is viewed as having three channels: PV power line; SV power line; and the premise's wiring. The first channel (the PV cable) has the least amount of noise and least amount of reflections. This channel has the highest potential bandwidth for communications. This is important because it is the channel that concentrates all of the bandwidth from the other channels. The type of signal used on this channel can be almost any signal used in communications (CDMA, TDMA, FDM, OFDM to name a few). A wideband signal such as CDMA that is relatively flat in the spectral domain is preferred to minimize radiated interference to other systems while delivering high data rates. [0054]
  • The second channel (SV line from the transformer to the premise) and third channel (premise wiring) have noise present from electrical appliances and reflections due to the “web” of wires. These channels can support a lower bandwidth than the PV channel and they need a more intelligent (with more overhead) modulation schemes. There are several companies with chip sets to achieve good communications for local area networks (LANs) such as: Adaptive Networks (Newton, Mass.), Inari (Draper, Utah), Intellion (Ocala, Fla.), DS[0055] 2 (Valencia, Spain) and Itran (Beer-Sheva, Israel). These devices would work well for the SV and premise channels.
  • Data signal and power are carried over the PV power line [0056] 14 as previously stated. A power line bridge 46 (PLB) allows the data signal to bypass the transformer 20 thus avoiding the grounding of the high frequency data signal. More description of the PLB follows in the FIG. 4 description. The data signal after manipulation is delivered to the end user's premise. The data signal enters premise via the SV wiring. The end user may have a local area network (LAN) or have individual digital appliances.
  • In one embodiment of the present invention, the signal is carried through the premise's wiring and is available to various digital appliances [0057] 29, 30, including PC's, by a power line interface device 28 (PLID). The PLID 28 plugs into a standard electrical socket and allows the digital appliance to send and receive digital data. An alternative embodiment as described later, uses a communications interface located outside of the premise and the data signal is directly fed to the premise.
  • Referring next to FIG. 3, a block diagram of the AP in accordance with the present invention is illustrated. The AP [0058] 44 is the point where digital data is coupled and de-coupled to the PV power line. Additionally, the data is processed so that it can be readily communicated. Data signal communication to and from POP 40 is provided by the backhaul link 42.
  • A backhaul interface [0059] 50 allows direct communication with POP 40. The signal is passed through a signal modem 52 (PV modem). An isolator 54 is used to prevent electric current from flowing between the PDS and the components leading to the POP 40. The isolator 54 is made from dielectric material. The isolator, in a preferred embodiment of the present invention, is a fiber optic light pipe. More description of the isolator and its components occurs in the description referring to FIG. 6.
  • The isolator [0060] 54 bridges between the PV modem 52 and a power line coupler 56 (PLC). The PV modem 52 within the AP 44 conditions the signal for transmission over the PV power line 14. When data is transmitted by the end user and is de-coupled off of the PV power line, the PV modem 52 conditions the signal for transmission back to the POP 40.
  • In one embodiment of the present invention the PLC [0061] 56 comprises, along with other components, an inductor having a toroid (donut-like) shaped core. The toroid core has permeability qualities to maximize signal to noise ratio. More description of a preferred embodiment for the PLC is presented below. The inductor component couples and de-couples a high frequency signal to and from the power line without invading the power line. Once the data signal has been coupled to the PV power line, it is transported on the PV power line 14.
  • Referring to FIG. 4, a block diagram of the PLB in accordance with the present invention is illustrated. The PLB [0062] 46 bypasses the transformer 20 linking the data signal between the PV power line and the SV power line. At either end of the PLB 46 is a coupler. A PV coupler 60 couples and de-coupes signal with a PV power line 14. A SV coupler 72 couples and de-coupes signal with a SV power line 24.
  • An isolator is present between the PLB end couplers [0063] 60,72 and the interior of the PLB 46. The isolators, a PV isolator 62 and a SV isolator 70, are composed of dielectric material and insulate the balance of the PLB from potential electrical damage and user injury. A preferred embodiment of the isolator uses fiber optic material. The isolator will be discussed in more detail below.
  • A PV modem [0064] 64 modulates and de-modulates the signal to and from the PV isolator. The PV modem conditions the high frequency signals for transmission over the PV power line 14. The SV modem 68 conditions the signal for communication over a SV power line. In one embodiment of the present invention, a data router 66 is between the SV modem 68 and the PV modem 64. The function of the data router 66 is to prioritize and gather packets from all of the devices on SV power line side PV power line side. The data router 66 provides data packet management of end user transmission.
  • The signal (going to the end user) is coupled onto the SV power line by the SV coupler [0065] 72. The SV power line 24 delivers the power service to an end user premise 26. A “web” of wires distributes power and signal within the premise. The user draws power on demand by plugging an appliance into a power outlet. In a similar manner, the user may use a power line interface device 28 (PLID) to digitally connect data appliances to receive and send data signals carried by the power wiring.
  • A PLID [0066] 28 can have a variety of interfaces to the subscriber's equipment 29, 30.
  • Some examples are RJ-11 Plain Old Telephone Service (POTS), RS-232, USB, and 10 Base-T. A subscriber can have multiple PLIDs [0067] 28 on the same internal wiring.
  • Referring to FIG. 5, a conceptual diagram of a power line coupling in accordance with one embodiment of the present invention is illustrated. The prior disclosed embodiments of the PLCS include a PLB 46. The embodiment conceptualized in FIG. 5 replaces the PLB [0068] 46 with a self-contained power line coupler 100, a fiber optic isolator 130 and a communications interface 140. Further, the transformer 20 is depicted as pole mounted. The Communications Interface 140 separates signal carried over the PV power line 14 into three components: SV power line 24; wireless link 150; and telephone line 160.
  • Referring to FIG. 6, a diagram of a self-contained power line coupling in accordance with one embodiment of the present invention is illustrated. The self-contained PLC is packaged in a weatherproof housing [0069] 102 to militate against harsh weather and environment conditions. The PV power line 14 passes through sealed openings in the container. A data signal coupler 104 couples and de-couples data signals transported by the PV power line 14. One embodiment of the present invention uses a magnetic toroid shaped inductor. Windings 108 are placed around the inductor 104 to facilitate flux linkage of the data signal. The number of windings and the winding orientation is selected to maximize flux linkage. The permeability of the magnetic core is chosen for maximum coupling with the high frequency data signal. The permeability characteristics must also prevent low frequency (50-60 Hz) power line signal saturation of the toroid core to allow the data signal to couple and de-couple.
  • The toroid has direct electrical connection to the signal conditioning electronics used for transmitting and receiving the data signal. Transmit and receive circuitry [0070] 110 carries data signal to signal conditioning electronic components. As depicted in FIG. 6, the transmit circuitry 112 and the receive circuitry 114 are in parallel. Another embodiment of the present invention employs two data signal coupling toroids as opposed to one data signaling coupling toroid as depicted. One coupler for receiving and one for transmitting in order to optimize the flux linkage for the two cases.
  • The design of the transmit side is done to maximize the power of the drive signal in order to keep the signal to noise ratio of the coupled signal at least to the level acceptable for the overall communications system. The receive side contains a low noise amplifier designed to handle the lowest acceptable transmit signal level of the system. At a system level, the modulation and signaling scheme is done to minimize interference between transmit and receive signals. [0071]
  • The signal conditioning circuitry is connected to the fiber optics interface via an electro-optical transducer [0072] 116, such as laser diodes. The transducer converts an electrical signal to a light signal in the receive circuitry 114. The transducer converts light signals to electrical signals in the transmit circuitry 112. The light signal is transmitted to and from a light pipe 130 to a fiber-optic isolator 120 (fiber optic line or cable). The data signals are communicated back and forth between the PLC 100 and the Communications Interface 140 via a fiber optic line 120. The Fiber Optic Isolator breaks any electrical path between the two devices and provides the inherent safety required by the power distributors.
  • With the PLC being a “closed” system, power for the electronics must be derived internally. Although batteries may be an option, replacement would be costly and impractical. As a result, the PLC contains a power draw toroid [0073] 106 having magnetic characteristics appropriate for coupling 60 Hz signals that will inductively draw some of the 60 Hz signal off of the power line charging a power supply 118 component. The power supply 118 powers the PLC electronics.
  • For additional safety, the PLC housing [0074] 102 is constructed with high dielectric, corrosive resistant materials and is designed to significantly reduce any possible exposure to the high voltage potential present on the power line. The fiber optic isolator 120 and light pipe 130 is the only connection between the PLC 100 and the communications interface 140. Further, the light pipe 130 is encased in the insulated housing 102. The housing's 102 first priority is to protect exposure to the high voltage potential. It is also designed to ensure proper operation under extreme environmental conditions.
  • In another embodiment of the present invention, a “hinged” toroid design allows for easy installation and minimal impact to customer service. The toroid simply snaps around the power line using existing utility tools and techniques. [0075]
  • The communications interface [0076] 140 communicates with the PLC 100 via the fiber optic isolator 120. Received signals are separated into digital data signals and any other communication signal that may be carried by the PV power line. FIG. 5 depicts three types of leads from the communications interface: 120/240 V power line 24 (SV power line); wireless link 150; and telephone link 160. The SV power line receives current from the transformer 24. The digital data signal is coupled on and off the SV power line 24 within the communications interface.
  • The description of one embodiment of the present invention for the PLB [0077] 46 providing a means for converting light signals received via a PV isolator to coupled digital data signals as delivered to a premise over SV power line has been offered above. The communications interface implements the coupling and de-coupling of digital data signal on and off the SV power line in a similar fashion.
  • A system as disclosed herein is useful to provide data services to the residential market place at 10 Mbps. This makes an entire new range of applications practically available. Each device that is connected to the power would (if desired) have an address and would be accessible remotely. Some examples include remote utility meter reading, Internet Protocol (IP)-based stereo systems, IP-based video delivery systems, and IP telephony, although these are not meant as limitations. [0078]
  • The present invention has been described in terms of preferred embodiments, however, it will be appreciated that various modifications and improvements may be made to the described embodiments without departing from the scope of the invention. [0079]

Claims (12)

    I claim:
  1. 1. A method of safely transporting high-frequency signals over power transmission lines, comprising the steps of:
    coupling and de-coupling high-frequency electrical signals on a first power transmission line;
    converting said high-frequency electrical signals to light signals and light signals to said high-frequency electrical signals with an electro-optical transducer for coupling and de-coupling said high-frequency electrical signals to and from a non-electrically conductive but light conductive medium.
  2. 2. The method of claim 1, further comprising performing said steps within a non-electrically conductive enclosure.
  3. 3. The method of claim 1, wherein said light conductive medium is a fiber-optic isolator.
  4. 4. The method of claim 3, wherein said fiber-optic isolator is a fiber-optic transmission line.
  5. 5. The method of claim 3, further comprising transmitting said light signals to and from an interface device for digital appliances.
  6. 6. The method of claim 3, further comprising:
    transmitting said light signals to and from a second electro-optical transducer to for coupling and de-coupling said high-frequency electrical signals to and from an opposite end of said fiber-optic isolator; and
    coupling and de-coupling said high-frequency electrical signals on a second power transmission line;
    so as to form an electrically isolated power line bridge.
  7. 7. An apparatus for safely transporting high-frequency signals over power transmission lines, comprising:
    coupler means for coupling and de-coupling high-frequency electrical signals on a first power transmission line;
    an electro-optical transducer capable of converting said high-frequency electrical signals to light signals and light signals to said high-frequency electrical signals; and
    a non-electrically conductive but light conductive medium adjacent said transducer for coupling and de-coupling said light signals.
  8. 8. The apparatus of claim 7, further comprising a non-electrically conductive enclosure for at least said coupler means and said transducer.
  9. 9. The apparatus of claim 7, wherein said light conductive medium comprises a fiber-optic isolator.
  10. 10. The apparatus of claim 9, wherein said fiber-optic isolator is a fiber-optic transmission line.
  11. 11. The apparatus of claim 9, further comprising an interface device for digital appliances connected to an opposite end of said fiber-optic isolator.
  12. 12. The apparatus of claim 9, further comprising:
    a second electro-optical transducer connected to an opposite end of said fiber-optic isolator for coupling and de-coupling said high-frequency electrical signals and said light signals to and from an opposite end of said fiber-optic isolator; and
    a second coupling means for coupling and de-coupling said high-frequency electrical signals on a second power transmission line so as to form an electrically isolated power line bridge.
US09915459 2001-02-14 2001-07-26 Apparatus and method for providing a power line communication device for safe transmission of high-frequency, high-bandwidth signals over existing power distribution lines Abandoned US20020110311A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US26851901 true 2001-02-14 2001-02-14
US09915459 US20020110311A1 (en) 2001-02-14 2001-07-26 Apparatus and method for providing a power line communication device for safe transmission of high-frequency, high-bandwidth signals over existing power distribution lines

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US09915459 US20020110311A1 (en) 2001-02-14 2001-07-26 Apparatus and method for providing a power line communication device for safe transmission of high-frequency, high-bandwidth signals over existing power distribution lines
US10315725 US6998962B2 (en) 2000-04-14 2002-12-10 Power line communication apparatus and method of using the same
US10319317 US6965302B2 (en) 2000-04-14 2002-12-13 Power line communication system and method of using the same
US10884564 US7187276B2 (en) 2001-02-14 2004-07-02 Power line communication system and method of using the same
US11218579 US7245212B2 (en) 2000-04-14 2005-09-06 Power line communication apparatus and method of using the same

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US09912633 Continuation-In-Part US7103240B2 (en) 2001-02-14 2001-07-25 Method and apparatus for providing inductive coupling and decoupling of high-frequency, high-bandwidth data signals directly on and off of a high voltage power line

Related Child Applications (4)

Application Number Title Priority Date Filing Date
US10075332 Continuation-In-Part US7414518B2 (en) 2001-02-14 2002-02-14 Power line communication device and method
US10315725 Continuation-In-Part US6998962B2 (en) 2000-04-14 2002-12-10 Power line communication apparatus and method of using the same
US10319317 Continuation-In-Part US6965302B2 (en) 2000-04-14 2002-12-13 Power line communication system and method of using the same
US10884564 Division US7187276B2 (en) 2001-02-14 2004-07-02 Power line communication system and method of using the same

Publications (1)

Publication Number Publication Date
US20020110311A1 true true US20020110311A1 (en) 2002-08-15

Family

ID=26953148

Family Applications (2)

Application Number Title Priority Date Filing Date
US09915459 Abandoned US20020110311A1 (en) 2001-02-14 2001-07-26 Apparatus and method for providing a power line communication device for safe transmission of high-frequency, high-bandwidth signals over existing power distribution lines
US10884564 Active US7187276B2 (en) 2001-02-14 2004-07-02 Power line communication system and method of using the same

Family Applications After (1)

Application Number Title Priority Date Filing Date
US10884564 Active US7187276B2 (en) 2001-02-14 2004-07-02 Power line communication system and method of using the same

Country Status (1)

Country Link
US (2) US20020110311A1 (en)

Cited By (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020110310A1 (en) * 2001-02-14 2002-08-15 Kline Paul A. Method and apparatus for providing inductive coupling and decoupling of high-frequency, high-bandwidth data signals directly on and off of a high voltage power line
US20020121963A1 (en) * 2001-02-14 2002-09-05 Kline Paul A. Data communication over a power line
US20040003934A1 (en) * 2002-06-24 2004-01-08 Cope Leonard David Power line coupling device and method of using the same
US20040056734A1 (en) * 2001-05-18 2004-03-25 Davidow Clifford A. Medium voltage signal coupling structure for last leg power grid high-speed data network
US20040151427A1 (en) * 2001-05-30 2004-08-05 Anders Sorum Fiberoptic coupling
US20040246107A1 (en) * 2001-02-14 2004-12-09 Current Technologies, L.L.C. Power line communication system and method of using the same
US20050001694A1 (en) * 2003-07-03 2005-01-06 Berkman William H. Power line communication system and method of operating the same
US20050030118A1 (en) * 2001-11-30 2005-02-10 Deging Wang Broadband access transmission network integrating the functions of electric power network, telecommunication network, tv network and internet
US20050111533A1 (en) * 2003-10-15 2005-05-26 Berkman William H. Surface wave power line communications system and method
US20050168326A1 (en) * 2002-12-10 2005-08-04 Current Technologies, Llc Power line repeater system and method
US20050169056A1 (en) * 2002-12-10 2005-08-04 Berkman William H. Power line communications device and method
EP1579668A2 (en) * 2002-12-10 2005-09-28 Current Technologies LLC A power line communication system and method of operating the same
US20050232344A1 (en) * 2002-12-10 2005-10-20 Mollenkopf James D Power line communications device and method
US20050275495A1 (en) * 2002-06-21 2005-12-15 Pridmore Charles F Jr Power line coupling device and method of using the same
US20060097574A1 (en) * 2004-10-26 2006-05-11 Gidge Brett D Power line communications device and method of use
US20060114925A1 (en) * 2004-12-01 2006-06-01 At&T Corp. Interference control in a broadband powerline communication system
US20060125609A1 (en) * 2000-08-09 2006-06-15 Kline Paul A Power line coupling device and method of using the same
US7091849B1 (en) 2004-05-06 2006-08-15 At&T Corp. Inbound interference reduction in a broadband powerline system
US20060220833A1 (en) * 2005-04-04 2006-10-05 Berkman William H Power line communications system and method
US20060244571A1 (en) * 2005-04-29 2006-11-02 Yaney David S Power line coupling device and method of use
US20060255930A1 (en) * 2005-05-12 2006-11-16 Berkman William H Power line communications system and method
US20060291575A1 (en) * 2003-07-03 2006-12-28 Berkman William H Power Line Communication System and Method
US20070002772A1 (en) * 2005-04-04 2007-01-04 Berkman William H Power Line Communication Device and Method
US20070008074A1 (en) * 2005-06-21 2007-01-11 Mollenkopf James D Multi-subnet power line communications system and method
US7173935B2 (en) 2002-06-07 2007-02-06 Current Grid, Llc Last leg utility grid high-speed data communication network having virtual local area network functionality
US7173938B1 (en) 2001-05-18 2007-02-06 Current Grid, Llc Method and apparatus for processing outbound data within a powerline based communication system
US20070052532A1 (en) * 2005-09-02 2007-03-08 Berkman William H Power meter bypass device and method for a power line communications system
US7194528B1 (en) 2001-05-18 2007-03-20 Current Grid, Llc Method and apparatus for processing inbound data within a powerline based communication system
US20070217414A1 (en) * 2006-03-14 2007-09-20 Berkman William H System and method for multicasting over power lines
US20070223381A1 (en) * 2006-03-27 2007-09-27 Radtke William O Underground power line communication system and method
US20070286079A1 (en) * 2006-06-09 2007-12-13 James Douglas Mollenkopf Power Line Communication Device and Method
US20070287405A1 (en) * 2006-06-09 2007-12-13 Radtke William O Method and Device for Providing Broadband Over Power Line Communications
US7312694B2 (en) 2003-03-14 2007-12-25 Ameren Corporation Capacitive couplers and methods for communicating data over an electrical power delivery system
US20080056338A1 (en) * 2006-08-28 2008-03-06 David Stanley Yaney Power Line Communication Device and Method with Frequency Shifted Modem
US20080152354A1 (en) * 2006-12-22 2008-06-26 Busby James L Fiber Optically Coupled Control System for Homes and Businesses
US20090002137A1 (en) * 2007-06-26 2009-01-01 Radtke William O Power Line Coupling Device and Method
US20090002094A1 (en) * 2007-06-26 2009-01-01 Radtke William O Power Line Coupling Device and Method
US20090085726A1 (en) * 2007-09-27 2009-04-02 Radtke William O Power Line Communications Coupling Device and Method
US7675897B2 (en) 2005-09-06 2010-03-09 Current Technologies, Llc Power line communications system with differentiated data services
US20100109862A1 (en) * 2008-11-06 2010-05-06 Manu Sharma System, Device and Method for Communicating over Power Lines
US20100109907A1 (en) * 2008-11-06 2010-05-06 Manu Sharma System, Device and Method for Communicating over Power Lines
US20100111199A1 (en) * 2008-11-06 2010-05-06 Manu Sharma Device and Method for Communicating over Power Lines
US7852837B1 (en) 2003-12-24 2010-12-14 At&T Intellectual Property Ii, L.P. Wi-Fi/BPL dual mode repeaters for power line networks
US20110012437A1 (en) * 2009-07-17 2011-01-20 Searete Llc Maintaining insulators in power transmission systems
US20110012583A1 (en) * 2009-07-17 2011-01-20 Searete Llc, A Limited Liability Corporation Of The State Of Delaware Use pairs of transformers to increase transmission line voltage
US20110011623A1 (en) * 2009-07-17 2011-01-20 Searete Llc Smart link coupled to power line
US20110018704A1 (en) * 2009-07-24 2011-01-27 Burrows Zachary M System, Device and Method for Providing Power Line Communications
US20110101989A1 (en) * 2009-07-17 2011-05-05 Searete Llc, A Limited Liability Corporation Of The State Of Delaware Systems and methods for testing the standoff capability of an overhead power transmission line
US8462902B1 (en) 2004-12-01 2013-06-11 At&T Intellectual Property Ii, L.P. Interference control in a broadband powerline communication system
CN103398741A (en) * 2013-07-31 2013-11-20 成都电业局双流供电局 Wireless transmission-based power transmission line on-line monitoring system
CN103532244A (en) * 2012-07-02 2014-01-22 张大堃 Equipotential power supply and signal transmission system of high-voltage power transmission line on-line monitoring device
CN103944611A (en) * 2014-04-02 2014-07-23 中国人民解放军信息工程大学 Unbalanced feed network system
CN104316107A (en) * 2014-10-28 2015-01-28 成都峰达科技有限公司 Electric transmission line monitoring system
CN105656215A (en) * 2016-03-25 2016-06-08 浙江大学 Wireless energy transmission device for high-voltage transmission line non-contact power supply and method thereof
US9614588B2 (en) * 2015-01-29 2017-04-04 Koolbridge Solar, Inc. Smart appliances
US9785213B2 (en) 2015-01-29 2017-10-10 Koolbridge Solar, Inc. Addressable electrical outlets

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7558206B2 (en) * 2005-06-21 2009-07-07 Current Technologies, Llc Power line communication rate limiting system and method
US7319717B2 (en) * 2005-06-28 2008-01-15 International Broadband Electric Communications, Inc. Device and method for enabling communications signals using a medium voltage power line
US7414526B2 (en) * 2005-06-28 2008-08-19 International Broadband Communications, Inc. Coupling of communications signals to a power line
US7778514B2 (en) * 2005-07-15 2010-08-17 International Broadband Electric Communications, Inc. Coupling of communications signals to a power line
US7667344B2 (en) * 2005-07-15 2010-02-23 International Broadband Electric Communications, Inc. Coupling communications signals to underground power lines
US7522812B2 (en) 2005-07-15 2009-04-21 International Broadband Electric Communications, Inc. Coupling of communications signals to a power line
US20070076666A1 (en) * 2005-10-03 2007-04-05 Riveiro Juan C Multi-Wideband Communications over Power Lines
US8213895B2 (en) * 2005-10-03 2012-07-03 Broadcom Europe Limited Multi-wideband communications over multiple mediums within a network
EP1770870A1 (en) 2005-10-03 2007-04-04 Gigle Semiconductors Limited Powerline communication device and method
US9705562B2 (en) * 2006-07-25 2017-07-11 Broadcom Europe Limited Dual transformer communication interface
US8406239B2 (en) * 2005-10-03 2013-03-26 Broadcom Corporation Multi-wideband communications over multiple mediums
US7860146B2 (en) * 2006-07-06 2010-12-28 Gigle Networks, Inc. Adaptative multi-carrier code division multiple access
US8885814B2 (en) * 2006-07-25 2014-11-11 Broadcom Europe Limited Feedback impedance control for driving a signal
US7808985B2 (en) * 2006-11-21 2010-10-05 Gigle Networks Sl Network repeater
US20080159358A1 (en) * 2007-01-02 2008-07-03 David Ruiz Unknown Destination Traffic Repetition
US8213582B2 (en) * 2008-03-14 2012-07-03 Broadcom Europe Limited Coupling signal processing circuitry with a wireline communications medium
US7602220B1 (en) 2008-06-24 2009-10-13 Gigle Semiconductor, Ltd. Resistor-input transconductor including common-mode compensation
US7956689B2 (en) * 2008-10-13 2011-06-07 Broadcom Corporation Programmable gain amplifier and transconductance compensation system
US7795973B2 (en) 2008-10-13 2010-09-14 Gigle Networks Ltd. Programmable gain amplifier
US9325374B2 (en) * 2012-06-15 2016-04-26 Qualcomm Incorporated Powerline communication diversity coupling technique
US9461707B1 (en) * 2015-05-21 2016-10-04 Landis+Gyr Technologies, Llc Power-line network with multi-scheme communication

Citations (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1547242A (en) * 1924-04-29 1925-07-28 American Telephone & Telegraph Carrier transmission over power circuits
US2577731A (en) * 1942-02-20 1951-12-11 Int Standard Electric Corp High-frequency traffic system over power supply lines
US3369078A (en) * 1965-06-28 1968-02-13 Charles R. Stradley System for transmitting stereophonic signals over electric power lines
US3605009A (en) * 1970-05-06 1971-09-14 Deltaray Corp Stabilized power supply
US3641536A (en) * 1970-04-14 1972-02-08 Veeder Industries Inc Gasoline pump multiplexer system for remote indicators for self-service gasoline pumps
US3696383A (en) * 1970-01-17 1972-10-03 Tokyo Electric Power Co Information transmission system for metered magnitudes
US3846638A (en) * 1972-10-02 1974-11-05 Gen Electric Improved coupling arrangement for power line carrier systems
US3973087A (en) * 1974-12-05 1976-08-03 General Electric Company Signal repeater for power line access data system
US3993110A (en) * 1974-02-27 1976-11-23 Telefonaktiebolaget L M Ericsson Method of diffusing gas into a sealed vessel and a device for carrying out the method
US4053876A (en) * 1976-04-08 1977-10-11 Sidney Hoffman Alarm system for warning of unbalance or failure of one or more phases of a multi-phase high-current load
US4250489A (en) * 1978-10-31 1981-02-10 Westinghouse Electric Corp. Distribution network communication system having branch connected repeaters
US4263549A (en) * 1979-10-12 1981-04-21 Corcom, Inc. Apparatus for determining differential mode and common mode noise
US4359644A (en) * 1978-06-09 1982-11-16 The Electricity Trust Of South Australia Load shedding control means
US4367522A (en) * 1980-03-28 1983-01-04 Siemens Aktiengesellschaft Three-phase inverter arrangement
US4383243A (en) * 1978-06-08 1983-05-10 Siemens Aktiengesellschaft Powerline carrier control installation
US4386436A (en) * 1981-02-27 1983-05-31 Rca Corporation Television remote control system for selectively controlling external apparatus through the AC power line
US4409542A (en) * 1980-05-27 1983-10-11 Siemens Aktiengesellschaft Monitoring system for an LC filter circuit in an AC power network
US4413250A (en) * 1981-09-03 1983-11-01 Beckman Instruments, Inc. Digital communication system for remote instruments
US4419621A (en) * 1980-05-27 1983-12-06 Siemens Aktiengesellschaft Monitoring system for the capacitor batteries of a three-phase filter circuit
US4471399A (en) * 1982-03-11 1984-09-11 Westinghouse Electric Corp. Power-line baseband communication system
US4475209A (en) * 1982-04-23 1984-10-02 Westinghouse Electric Corp. Regenerator for an intrabundle power-line communication system
US4479033A (en) * 1982-03-29 1984-10-23 Astech, Inc. Telephone extension system utilizing power line carrier signals
US4517548A (en) * 1982-12-20 1985-05-14 Sharp Kabushiki Kaisha Transmitter/receiver circuit for signal transmission over power wiring
US4599598A (en) * 1981-09-14 1986-07-08 Matsushita Electric Works, Ltd. Data transmission system utilizing power line
US4652855A (en) * 1984-12-05 1987-03-24 Westinghouse Electric Corp. Portable remote meter reading apparatus
US4701945A (en) * 1984-10-09 1987-10-20 Pedigo Michael K Carrier current transceiver
US4724381A (en) * 1986-02-03 1988-02-09 Niagara Mohawk Power Corporation RF antenna for transmission line sensor
US4772870A (en) * 1986-11-20 1988-09-20 Reyes Ronald R Power line communication system
US4904996A (en) * 1988-01-19 1990-02-27 Fernandes Roosevelt A Line-mounted, movable, power line monitoring system
US4912553A (en) * 1986-03-28 1990-03-27 Pal Theodore L Wideband video system for single power line communications
US5066939A (en) * 1989-10-04 1991-11-19 Mansfield Jr Amos R Method and means of operating a power line carrier communication system
US5068890A (en) * 1986-10-22 1991-11-26 Nilssen Ole K Combined signal and electrical power distribution system
US5151838A (en) * 1989-09-20 1992-09-29 Dockery Gregory A Video multiplying system
US5410720A (en) * 1992-10-28 1995-04-25 Alpha Technologies Apparatus and methods for generating an AC power signal for cable TV distribution systems
US5426360A (en) * 1994-02-17 1995-06-20 Niagara Mohawk Power Corporation Secondary electrical power line parameter monitoring apparatus and system
US5477091A (en) * 1991-11-27 1995-12-19 Merlin Gerin High quality electrical power distribution system
US5533054A (en) * 1993-07-09 1996-07-02 Technitrol, Inc. Multi-level data transmitter
US5598406A (en) * 1992-11-06 1997-01-28 Hewlett-Packard Company High speed data transfer over twisted pair cabling
US5818821A (en) * 1994-12-30 1998-10-06 Intelogis, Inc. Universal lan power line carrier repeater system and method
US5870016A (en) * 1997-02-03 1999-02-09 Eva Cogenics Inc Euaday Division Power line carrier data transmission systems having signal conditioning for the carrier data signal
US5952914A (en) * 1997-09-10 1999-09-14 At&T Corp. Power line communication systems
US5994999A (en) * 1997-07-17 1999-11-30 Gec Alsthom T & D Sa Low voltage link for transmitting on/off orders
US5994998A (en) * 1997-05-29 1999-11-30 3Com Corporation Power transfer apparatus for concurrently transmitting data and power over data wires
US6037857A (en) * 1997-06-06 2000-03-14 Allen-Bradley Company, Llc Serial data isolator industrial control system providing intrinsically safe operation
US6141634A (en) * 1997-11-26 2000-10-31 International Business Machines Corporation AC power line network simulator
US6229434B1 (en) * 1999-03-04 2001-05-08 Gentex Corporation Vehicle communication system
US6452482B1 (en) * 1999-12-30 2002-09-17 Ambient Corporation Inductive coupling of a data signal to a power transmission cable

Family Cites Families (95)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3656112A (en) * 1969-03-14 1972-04-11 Constellation Science And Tech Utility meter remote automatic reading system
US3810096A (en) * 1972-09-14 1974-05-07 Integrated Syst Co Method and system for transmitting data and indicating room status
US3911415A (en) * 1973-12-18 1975-10-07 Westinghouse Electric Corp Distribution network power line carrier communication system
US3973240A (en) * 1974-12-05 1976-08-03 General Electric Company Power line access data system
US3944723A (en) * 1974-12-05 1976-03-16 General Electric Company Station for power line access data system
US3967264A (en) * 1975-01-31 1976-06-29 Westinghouse Electric Corporation Distribution network power line communication system including addressable interrogation and response repeater
US3942168A (en) * 1975-01-31 1976-03-02 Westinghouse Electric Corporation Distribution network power line communication system
US3942170A (en) * 1975-01-31 1976-03-02 Westinghouse Electric Corporation Distribution network powerline carrier communication system
US4004110A (en) * 1975-10-07 1977-01-18 Westinghouse Electric Corporation Power supply for power line carrier communication systems
US4012733A (en) * 1975-10-16 1977-03-15 Westinghouse Electric Corporation Distribution power line communication system including a messenger wire communications link
US4057793A (en) 1975-10-28 1977-11-08 Johnson Raymond E Current carrier communication system
US4060735A (en) 1976-07-12 1977-11-29 Johnson Controls, Inc. Control system employing a programmable multiple channel controller for transmitting control signals over electrical power lines
US4408186A (en) * 1981-02-04 1983-10-04 General Electric Co. Power line communication over ground and neutral conductors of plural residential branch circuits
US4357598A (en) 1981-04-09 1982-11-02 Westinghouse Electric Corp. Three-phase power distribution network communication system
US4433284A (en) * 1982-04-07 1984-02-21 Rockwell International Corporation Power line communications bypass around delta-wye transformer
US4473816A (en) * 1982-04-13 1984-09-25 Rockwell International Corporation Communications signal bypass around power line transformer
US4473817A (en) * 1982-04-13 1984-09-25 Rockwell International Corporation Coupling power line communications signals around distribution transformers
US4569045A (en) * 1983-06-06 1986-02-04 Eaton Corp. 3-Wire multiplexer
US4675648A (en) * 1984-04-17 1987-06-23 Honeywell Inc. Passive signal coupler between power distribution systems for the transmission of data signals over the power lines
US4638298A (en) * 1985-07-16 1987-01-20 Telautograph Corporation Communication system having message repeating terminals
US4642607A (en) * 1985-08-06 1987-02-10 National Semiconductor Corporation Power line carrier communications system transformer bridge
US4686382A (en) * 1985-08-14 1987-08-11 Westinghouse Electric Corp. Switch bypass circuit for power line communication systems
US6104707A (en) * 1989-04-28 2000-08-15 Videocom, Inc. Transformer coupler for communication over various lines
US5559377A (en) * 1989-04-28 1996-09-24 Abraham; Charles Transformer coupler for communication over various lines
US5625863A (en) * 1989-04-28 1997-04-29 Videocom, Inc. Video distribution system using in-wall wiring
US5717685A (en) * 1989-04-28 1998-02-10 Abraham; Charles Transformer coupler for communication over various lines
US6014386A (en) * 1989-10-30 2000-01-11 Videocom, Inc. System and method for high speed communication of video, voice and error-free data over in-wall wiring
FR2677190B1 (en) 1991-06-03 1993-09-03 Merlin Gerin A teletransmission a power line carrier for the control command of an electrical network, in particular a medium voltage.
JP3165724B2 (en) * 1992-02-14 2001-05-14 キヤノン株式会社 Communication device
GB9222205D0 (en) * 1992-10-22 1992-12-02 Norweb Plc Low voltage filter
US6282405B1 (en) * 1992-10-22 2001-08-28 Norweb Plc Hybrid electricity and telecommunications distribution network
US6144292A (en) 1992-10-22 2000-11-07 Norweb Plc Powerline communications network employing TDMA, FDMA and/or CDMA
GB9324152D0 (en) * 1993-11-24 1994-01-12 Remote Metering Systems Ltd Mains communication system
GB9417359D0 (en) * 1994-08-26 1994-10-19 Norweb Plc A power transmission network and filter therefor
GB2299494B (en) * 1995-03-30 1999-11-03 Northern Telecom Ltd Communications Repeater
US5777769A (en) * 1995-12-28 1998-07-07 Lucent Technologies Inc. Device and method for providing high speed data transfer through a drop line of a power line carrier communication system
JP3419627B2 (en) * 1996-06-11 2003-06-23 株式会社日立製作所 Router device
US5937342A (en) * 1997-01-28 1999-08-10 Dynamic Telecommunications, Inc. Wireless local distribution system using standard power lines
US6160795A (en) * 1997-03-21 2000-12-12 Siemens Aktiengesellschaft Network communication
US5978371A (en) 1997-03-31 1999-11-02 Abb Power T&D Company Inc. Communications module base repeater
US6151480A (en) * 1997-06-27 2000-11-21 Adc Telecommunications, Inc. System and method for distributing RF signals over power lines within a substantially closed environment
US6130896A (en) 1997-10-20 2000-10-10 Intel Corporation Wireless LAN segments with point coordination
US6091709A (en) * 1997-11-25 2000-07-18 International Business Machines Corporation Quality of service management for packet switched networks
US6175860B1 (en) * 1997-11-26 2001-01-16 International Business Machines Corporation Method and apparatus for an automatic multi-rate wireless/wired computer network
US6157292A (en) 1997-12-04 2000-12-05 Digital Security Controls Ltd. Power distribution grid communication system
US6463068B1 (en) * 1997-12-31 2002-10-08 Cisco Technologies, Inc. Router with class of service mapping
US6040759A (en) * 1998-02-17 2000-03-21 Sanderson; Lelon Wayne Communication system for providing broadband data services using a high-voltage cable of a power system
GB9805763D0 (en) 1998-03-17 1998-05-13 Northern Telecom Ltd Transmitting communications signals over a power line network
US6243413B1 (en) * 1998-04-03 2001-06-05 International Business Machines Corporation Modular home-networking communication system and method using disparate communication channels
US6628609B2 (en) * 1998-04-30 2003-09-30 Nortel Networks Limited Method and apparatus for simple IP-layer bandwidth allocation using ingress control of egress bandwidth
US6304578B1 (en) * 1998-05-01 2001-10-16 Lucent Technologies Inc. Packet routing and queuing at the headend of shared data channel
US6480510B1 (en) 1998-07-28 2002-11-12 Serconet Ltd. Local area network of serial intelligent cells
US6243571B1 (en) * 1998-09-21 2001-06-05 Phonex Corporation Method and system for distribution of wireless signals for increased wireless coverage using power lines
US6449646B1 (en) * 1998-10-13 2002-09-10 Aspect Communications Corporation Method and apparatus for allocating mixed transaction type messages to resources via an integrated queuing mechanism
US6798743B1 (en) * 1999-03-22 2004-09-28 Cisco Technology, Inc. Packet prioritization processing technique for routing traffic in a packet-switched computer network
US6590867B1 (en) * 1999-05-27 2003-07-08 At&T Corp. Internet protocol (IP) class-of-service routing technique
US6300881B1 (en) 1999-06-09 2001-10-09 Motorola, Inc. Data transfer system and method for communicating utility consumption data over power line carriers
US6526581B1 (en) * 1999-08-03 2003-02-25 Ucentric Holdings, Llc Multi-service in-home network with an open interface
CA2390945A1 (en) * 1999-11-15 2001-05-25 Amos R. Mansfield Highly reliable power line communications system
US6331814B1 (en) 1999-11-25 2001-12-18 International Business Machines Corporation Adapter device for the transmission of digital data over an AC power line
US6668058B2 (en) 2000-03-07 2003-12-23 Telkonet Communications, Inc. Power line telephony exchange
US6980091B2 (en) * 2002-12-10 2005-12-27 Current Technologies, Llc Power line communication system and method of operating the same
US6998962B2 (en) * 2000-04-14 2006-02-14 Current Technologies, Llc Power line communication apparatus and method of using the same
US6965303B2 (en) * 2002-12-10 2005-11-15 Current Technologies, Llc Power line communication system and method
US7064654B2 (en) * 2002-12-10 2006-06-20 Current Technologies, Llc Power line communication system and method of operating the same
US6965302B2 (en) * 2000-04-14 2005-11-15 Current Technologies, Llc Power line communication system and method of using the same
US6980090B2 (en) * 2002-12-10 2005-12-27 Current Technologies, Llc Device and method for coupling with electrical distribution network infrastructure to provide communications
KR20030019349A (en) 2000-04-14 2003-03-06 커런트 테크놀로지스, 엘엘씨 Digital communication utilizing medium voltage power distribution lines
US6842459B1 (en) * 2000-04-19 2005-01-11 Serconet Ltd. Network combining wired and non-wired segments
US6748435B1 (en) * 2000-04-28 2004-06-08 Matsushita Electric Industrial Co., Ltd. Random early demotion and promotion marker
US6922135B2 (en) * 2000-05-23 2005-07-26 Satius, Inc. High frequency network multiplexed communications over various lines using multiple modulated carrier frequencies
US6396392B1 (en) * 2000-05-23 2002-05-28 Wire21, Inc. High frequency network communications over various lines
US6275144B1 (en) * 2000-07-11 2001-08-14 Telenetwork, Inc. Variable low frequency offset, differential, ook, high-speed power-line communication
US6373377B1 (en) * 2000-10-05 2002-04-16 Conexant Systems, Inc. Power supply with digital data coupling for power-line networking
CA2472968A1 (en) * 2002-01-09 2003-07-17 Geir Monsen Vavik Analogue regenerative transponders, including regenerative transponder systems
EP1371219A4 (en) * 2001-02-14 2006-06-21 Current Tech Llc Data communication over a power line
US20020110311A1 (en) * 2001-02-14 2002-08-15 Kline Paul A. Apparatus and method for providing a power line communication device for safe transmission of high-frequency, high-bandwidth signals over existing power distribution lines
US7103240B2 (en) * 2001-02-14 2006-09-05 Current Technologies, Llc Method and apparatus for providing inductive coupling and decoupling of high-frequency, high-bandwidth data signals directly on and off of a high voltage power line
US20020109585A1 (en) * 2001-02-15 2002-08-15 Sanderson Lelon Wayne Apparatus, method and system for range extension of a data communication signal on a high voltage cable
US7245472B2 (en) * 2001-05-18 2007-07-17 Curretn Grid, Llc Medium voltage signal coupling structure for last leg power grid high-speed data network
US6624532B1 (en) * 2001-05-18 2003-09-23 Power Wan, Inc. System and method for utility network load control
US7245625B2 (en) * 2001-08-04 2007-07-17 Arkados, Inc. Network-to-network adaptor for power line communications
WO2003036932A8 (en) * 2001-08-17 2003-07-31 Enikia Llc Coupling between power line and customer in power line communication system
JP4075461B2 (en) * 2001-11-27 2008-04-16 ソニー株式会社 Communication system, a communication terminal and communication method
US6844809B2 (en) * 2001-12-04 2005-01-18 Constantine N. Manis Passive optical network backhaul for powerline communications
GB0200370D0 (en) * 2002-01-09 2002-02-20 Hewlett Packard Co Load balancing in data transfer networks
WO2003100996A3 (en) 2002-05-28 2004-04-01 Amperion Inc Broadband communications using a medium-voltage power line
US7173935B2 (en) 2002-06-07 2007-02-06 Current Grid, Llc Last leg utility grid high-speed data communication network having virtual local area network functionality
US20040047335A1 (en) * 2002-06-21 2004-03-11 Proctor James Arthur Wireless local area network extension using existing wiring and wireless repeater module(s)
US20040157551A1 (en) * 2002-06-21 2004-08-12 Tantivy Communications, Inc Repeater for extending range of time division duplex communication system
US20050164666A1 (en) * 2002-10-02 2005-07-28 Lang Jack A. Communication methods and apparatus
US6993317B2 (en) * 2002-10-02 2006-01-31 Amperion, Inc. Method and system for signal repeating in powerline communications
US7058524B2 (en) * 2002-10-25 2006-06-06 Hudson Bay Wireless, Llc Electrical power metering system
US20050076149A1 (en) * 2002-12-04 2005-04-07 Macphy Technologies, Inc. Method and apparatus for providing broadband wireless access services using the low voltage power line
US20050085259A1 (en) * 2003-10-15 2005-04-21 Conner W. S. Technique to coordinate wireless network over a power line or other wired back channel

Patent Citations (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1547242A (en) * 1924-04-29 1925-07-28 American Telephone & Telegraph Carrier transmission over power circuits
US2577731A (en) * 1942-02-20 1951-12-11 Int Standard Electric Corp High-frequency traffic system over power supply lines
US3369078A (en) * 1965-06-28 1968-02-13 Charles R. Stradley System for transmitting stereophonic signals over electric power lines
US3696383A (en) * 1970-01-17 1972-10-03 Tokyo Electric Power Co Information transmission system for metered magnitudes
US3641536A (en) * 1970-04-14 1972-02-08 Veeder Industries Inc Gasoline pump multiplexer system for remote indicators for self-service gasoline pumps
US3605009A (en) * 1970-05-06 1971-09-14 Deltaray Corp Stabilized power supply
US3846638A (en) * 1972-10-02 1974-11-05 Gen Electric Improved coupling arrangement for power line carrier systems
US3993110A (en) * 1974-02-27 1976-11-23 Telefonaktiebolaget L M Ericsson Method of diffusing gas into a sealed vessel and a device for carrying out the method
US3973087A (en) * 1974-12-05 1976-08-03 General Electric Company Signal repeater for power line access data system
US4053876A (en) * 1976-04-08 1977-10-11 Sidney Hoffman Alarm system for warning of unbalance or failure of one or more phases of a multi-phase high-current load
US4383243A (en) * 1978-06-08 1983-05-10 Siemens Aktiengesellschaft Powerline carrier control installation
US4359644A (en) * 1978-06-09 1982-11-16 The Electricity Trust Of South Australia Load shedding control means
US4250489A (en) * 1978-10-31 1981-02-10 Westinghouse Electric Corp. Distribution network communication system having branch connected repeaters
US4263549A (en) * 1979-10-12 1981-04-21 Corcom, Inc. Apparatus for determining differential mode and common mode noise
US4367522A (en) * 1980-03-28 1983-01-04 Siemens Aktiengesellschaft Three-phase inverter arrangement
US4409542A (en) * 1980-05-27 1983-10-11 Siemens Aktiengesellschaft Monitoring system for an LC filter circuit in an AC power network
US4419621A (en) * 1980-05-27 1983-12-06 Siemens Aktiengesellschaft Monitoring system for the capacitor batteries of a three-phase filter circuit
US4386436A (en) * 1981-02-27 1983-05-31 Rca Corporation Television remote control system for selectively controlling external apparatus through the AC power line
US4413250A (en) * 1981-09-03 1983-11-01 Beckman Instruments, Inc. Digital communication system for remote instruments
US4599598A (en) * 1981-09-14 1986-07-08 Matsushita Electric Works, Ltd. Data transmission system utilizing power line
US4471399A (en) * 1982-03-11 1984-09-11 Westinghouse Electric Corp. Power-line baseband communication system
US4479033A (en) * 1982-03-29 1984-10-23 Astech, Inc. Telephone extension system utilizing power line carrier signals
US4475209A (en) * 1982-04-23 1984-10-02 Westinghouse Electric Corp. Regenerator for an intrabundle power-line communication system
US4517548A (en) * 1982-12-20 1985-05-14 Sharp Kabushiki Kaisha Transmitter/receiver circuit for signal transmission over power wiring
US4701945A (en) * 1984-10-09 1987-10-20 Pedigo Michael K Carrier current transceiver
US4652855A (en) * 1984-12-05 1987-03-24 Westinghouse Electric Corp. Portable remote meter reading apparatus
US4724381A (en) * 1986-02-03 1988-02-09 Niagara Mohawk Power Corporation RF antenna for transmission line sensor
US4912553A (en) * 1986-03-28 1990-03-27 Pal Theodore L Wideband video system for single power line communications
US5068890A (en) * 1986-10-22 1991-11-26 Nilssen Ole K Combined signal and electrical power distribution system
US4772870A (en) * 1986-11-20 1988-09-20 Reyes Ronald R Power line communication system
US4904996A (en) * 1988-01-19 1990-02-27 Fernandes Roosevelt A Line-mounted, movable, power line monitoring system
US5151838A (en) * 1989-09-20 1992-09-29 Dockery Gregory A Video multiplying system
US5066939A (en) * 1989-10-04 1991-11-19 Mansfield Jr Amos R Method and means of operating a power line carrier communication system
US5477091A (en) * 1991-11-27 1995-12-19 Merlin Gerin High quality electrical power distribution system
US5410720A (en) * 1992-10-28 1995-04-25 Alpha Technologies Apparatus and methods for generating an AC power signal for cable TV distribution systems
US5598406A (en) * 1992-11-06 1997-01-28 Hewlett-Packard Company High speed data transfer over twisted pair cabling
US5533054A (en) * 1993-07-09 1996-07-02 Technitrol, Inc. Multi-level data transmitter
US5426360A (en) * 1994-02-17 1995-06-20 Niagara Mohawk Power Corporation Secondary electrical power line parameter monitoring apparatus and system
US5818821A (en) * 1994-12-30 1998-10-06 Intelogis, Inc. Universal lan power line carrier repeater system and method
US5870016A (en) * 1997-02-03 1999-02-09 Eva Cogenics Inc Euaday Division Power line carrier data transmission systems having signal conditioning for the carrier data signal
US5994998A (en) * 1997-05-29 1999-11-30 3Com Corporation Power transfer apparatus for concurrently transmitting data and power over data wires
US6140911A (en) * 1997-05-29 2000-10-31 3Com Corporation Power transfer apparatus for concurrently transmitting data and power over data wires
US6037857A (en) * 1997-06-06 2000-03-14 Allen-Bradley Company, Llc Serial data isolator industrial control system providing intrinsically safe operation
US5994999A (en) * 1997-07-17 1999-11-30 Gec Alsthom T & D Sa Low voltage link for transmitting on/off orders
US5952914A (en) * 1997-09-10 1999-09-14 At&T Corp. Power line communication systems
US6141634A (en) * 1997-11-26 2000-10-31 International Business Machines Corporation AC power line network simulator
US6229434B1 (en) * 1999-03-04 2001-05-08 Gentex Corporation Vehicle communication system
US6452482B1 (en) * 1999-12-30 2002-09-17 Ambient Corporation Inductive coupling of a data signal to a power transmission cable

Cited By (120)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060125609A1 (en) * 2000-08-09 2006-06-15 Kline Paul A Power line coupling device and method of using the same
US20080266134A1 (en) * 2001-02-14 2008-10-30 Kline Paul A Power Line Communication System, Device and Method
US20020121963A1 (en) * 2001-02-14 2002-09-05 Kline Paul A. Data communication over a power line
US20020154000A1 (en) * 2001-02-14 2002-10-24 Kline Paul A. Data communication over a power line
US7187276B2 (en) 2001-02-14 2007-03-06 Current Technologies, Llc Power line communication system and method of using the same
US7046882B2 (en) 2001-02-14 2006-05-16 Current Technologies, Llc Power line communication system and method
US20040246107A1 (en) * 2001-02-14 2004-12-09 Current Technologies, L.L.C. Power line communication system and method of using the same
US20020110310A1 (en) * 2001-02-14 2002-08-15 Kline Paul A. Method and apparatus for providing inductive coupling and decoupling of high-frequency, high-bandwidth data signals directly on and off of a high voltage power line
US7675408B2 (en) 2001-02-14 2010-03-09 Current Technologies, Llc Power line communication system, device and method
US20050213874A1 (en) * 2001-02-14 2005-09-29 Kline Paul A Power line communication system and method
US20070222637A1 (en) * 2001-05-18 2007-09-27 Davidow Clifford A Medium Voltage Signal Coupling Structure For Last Leg Power Grid High-Speed Data Network
US7173938B1 (en) 2001-05-18 2007-02-06 Current Grid, Llc Method and apparatus for processing outbound data within a powerline based communication system
US20100102987A1 (en) * 2001-05-18 2010-04-29 Heng Lou Power Line Communication Device having Virtual Local Area Network Functionality
US20040056734A1 (en) * 2001-05-18 2004-03-25 Davidow Clifford A. Medium voltage signal coupling structure for last leg power grid high-speed data network
US7773361B2 (en) 2001-05-18 2010-08-10 Current Grid, Llc Medium voltage signal coupling structure for last leg power grid high-speed data network
US7194528B1 (en) 2001-05-18 2007-03-20 Current Grid, Llc Method and apparatus for processing inbound data within a powerline based communication system
US20040151427A1 (en) * 2001-05-30 2004-08-05 Anders Sorum Fiberoptic coupling
US7113668B2 (en) * 2001-05-30 2006-09-26 Statoil Asa System for the transmission of signals to or between underwater installations
US20050030118A1 (en) * 2001-11-30 2005-02-10 Deging Wang Broadband access transmission network integrating the functions of electric power network, telecommunication network, tv network and internet
US7173935B2 (en) 2002-06-07 2007-02-06 Current Grid, Llc Last leg utility grid high-speed data communication network having virtual local area network functionality
US20070201494A1 (en) * 2002-06-07 2007-08-30 Heng Lou Last Leg Utility Grid High-Speed Data Communication Network Having Virtual Local Area Network Functionality
US7664117B2 (en) 2002-06-07 2010-02-16 Current Grid, Llc Last leg utility grid high-speed data communication network having virtual local area network functionality
US20050275495A1 (en) * 2002-06-21 2005-12-15 Pridmore Charles F Jr Power line coupling device and method of using the same
US20040003934A1 (en) * 2002-06-24 2004-01-08 Cope Leonard David Power line coupling device and method of using the same
US20050168326A1 (en) * 2002-12-10 2005-08-04 Current Technologies, Llc Power line repeater system and method
US20100176968A1 (en) * 2002-12-10 2010-07-15 White Ii Melvin Joseph Power Line Communication Apparatus and Method of Using the Same
US20050169056A1 (en) * 2002-12-10 2005-08-04 Berkman William H. Power line communications device and method
US8198999B2 (en) 2002-12-10 2012-06-12 Current Technologies, Llc Power line communication system and method of operating the same
US7466225B2 (en) 2002-12-10 2008-12-16 Current Technologies, Llc Power line communication system and method of operating the same
US7701325B2 (en) 2002-12-10 2010-04-20 Current Technologies, Llc Power line communication apparatus and method of using the same
US7224272B2 (en) 2002-12-10 2007-05-29 Current Technologies, Llc Power line repeater system and method
US20050232344A1 (en) * 2002-12-10 2005-10-20 Mollenkopf James D Power line communications device and method
US7449991B2 (en) 2002-12-10 2008-11-11 Current Technologies, Llc Power line communications device and method
EP1579668A2 (en) * 2002-12-10 2005-09-28 Current Technologies LLC A power line communication system and method of operating the same
EP1579669A2 (en) * 2002-12-10 2005-09-28 Current Technologies LLC A power line communication apparatus and method of using same
EP1579669A4 (en) * 2002-12-10 2007-08-29 Current Tech Llc A power line communication apparatus and method of using same
US20090134996A1 (en) * 2002-12-10 2009-05-28 White Ii Melvin Joseph Power Line Communication System and Method of Operating the Same
US20060038662A1 (en) * 2002-12-10 2006-02-23 White Melvin J Ii Power line communication system and method of operating the same
EP1579668A4 (en) * 2002-12-10 2007-09-05 Current Tech Llc A power line communication system and method of operating the same
US7312694B2 (en) 2003-03-14 2007-12-25 Ameren Corporation Capacitive couplers and methods for communicating data over an electrical power delivery system
US20060291575A1 (en) * 2003-07-03 2006-12-28 Berkman William H Power Line Communication System and Method
US7098773B2 (en) 2003-07-03 2006-08-29 Current Technologies, Llc Power line communication system and method of operating the same
US20050001694A1 (en) * 2003-07-03 2005-01-06 Berkman William H. Power line communication system and method of operating the same
US7280033B2 (en) 2003-10-15 2007-10-09 Current Technologies, Llc Surface wave power line communications system and method
US20050111533A1 (en) * 2003-10-15 2005-05-26 Berkman William H. Surface wave power line communications system and method
US7852837B1 (en) 2003-12-24 2010-12-14 At&T Intellectual Property Ii, L.P. Wi-Fi/BPL dual mode repeaters for power line networks
US9577706B2 (en) 2004-05-06 2017-02-21 At&T Intellectual Property Ii, L.P. Outbound interference reduction in a broadband powerline system
US7453353B1 (en) 2004-05-06 2008-11-18 At&T Intellectual Property Ii, L.P. Inbound interference reduction in a broadband powerline system
US7091849B1 (en) 2004-05-06 2006-08-15 At&T Corp. Inbound interference reduction in a broadband powerline system
US9887734B2 (en) 2004-05-06 2018-02-06 At&T Intellectual Property Ii, L.P. Outbound interference reduction in a broadband powerline system
US8938021B1 (en) 2004-05-06 2015-01-20 Paul Shala Henry Outbound interference reduction in a broadband powerline system
US20060097573A1 (en) * 2004-10-26 2006-05-11 Gidge Brett D Power line communications system and method of operating the same
US20060192672A1 (en) * 2004-10-26 2006-08-31 Gidge Brett D Power line communications device and method
US7450000B2 (en) 2004-10-26 2008-11-11 Current Technologies, Llc Power line communications device and method
US20060097574A1 (en) * 2004-10-26 2006-05-11 Gidge Brett D Power line communications device and method of use
US7321291B2 (en) 2004-10-26 2008-01-22 Current Technologies, Llc Power line communications system and method of operating the same
US7382232B2 (en) 2004-10-26 2008-06-03 Current Technologies, Llc Power line communications device and method of use
US20070076505A1 (en) * 2004-10-26 2007-04-05 Radtke William O Power Line Communications Device and Method of Use
US9172429B2 (en) 2004-12-01 2015-10-27 At&T Intellectual Property Ii, L.P. Interference control in a broadband powerline communication system
US20060114925A1 (en) * 2004-12-01 2006-06-01 At&T Corp. Interference control in a broadband powerline communication system
US9780835B2 (en) 2004-12-01 2017-10-03 At&T Intellectual Property Ii, L.P. Interference control in a broadband powerline communication system
US8804797B2 (en) 2004-12-01 2014-08-12 At&T Intellectual Property Ii, L.P. Interference control in a broadband powerline communication system
US8462902B1 (en) 2004-12-01 2013-06-11 At&T Intellectual Property Ii, L.P. Interference control in a broadband powerline communication system
US7265664B2 (en) 2005-04-04 2007-09-04 Current Technologies, Llc Power line communications system and method
US20070268124A1 (en) * 2005-04-04 2007-11-22 Berkman William H Power Line Communications System and Method
US7804763B2 (en) * 2005-04-04 2010-09-28 Current Technologies, Llc Power line communication device and method
US20060220833A1 (en) * 2005-04-04 2006-10-05 Berkman William H Power line communications system and method
US7450001B2 (en) 2005-04-04 2008-11-11 Current Technologies, Llc Power line communications system and method
US20070002772A1 (en) * 2005-04-04 2007-01-04 Berkman William H Power Line Communication Device and Method
US20060244571A1 (en) * 2005-04-29 2006-11-02 Yaney David S Power line coupling device and method of use
US20060255930A1 (en) * 2005-05-12 2006-11-16 Berkman William H Power line communications system and method
US7259657B2 (en) 2005-06-21 2007-08-21 Current Technologies, Llc Multi-subnet power line communications system and method
US20070008074A1 (en) * 2005-06-21 2007-01-11 Mollenkopf James D Multi-subnet power line communications system and method
US7307510B2 (en) 2005-09-02 2007-12-11 Current Technologies, Llc Power meter bypass device and method for a power line communications system
US7561026B2 (en) 2005-09-02 2009-07-14 Current Technologies, Llc Bypass device and method for a power line communications system
US20070052532A1 (en) * 2005-09-02 2007-03-08 Berkman William H Power meter bypass device and method for a power line communications system
US7675897B2 (en) 2005-09-06 2010-03-09 Current Technologies, Llc Power line communications system with differentiated data services
US20070217414A1 (en) * 2006-03-14 2007-09-20 Berkman William H System and method for multicasting over power lines
US20070223381A1 (en) * 2006-03-27 2007-09-27 Radtke William O Underground power line communication system and method
US7764943B2 (en) 2006-03-27 2010-07-27 Current Technologies, Llc Overhead and underground power line communication system and method using a bypass
US20070287405A1 (en) * 2006-06-09 2007-12-13 Radtke William O Method and Device for Providing Broadband Over Power Line Communications
US7761079B2 (en) 2006-06-09 2010-07-20 Current Technologies, Llc Power line communication device and method
US20070286079A1 (en) * 2006-06-09 2007-12-13 James Douglas Mollenkopf Power Line Communication Device and Method
US20080056338A1 (en) * 2006-08-28 2008-03-06 David Stanley Yaney Power Line Communication Device and Method with Frequency Shifted Modem
US20080152354A1 (en) * 2006-12-22 2008-06-26 Busby James L Fiber Optically Coupled Control System for Homes and Businesses
US20090002094A1 (en) * 2007-06-26 2009-01-01 Radtke William O Power Line Coupling Device and Method
US7876174B2 (en) 2007-06-26 2011-01-25 Current Technologies, Llc Power line coupling device and method
US7795994B2 (en) 2007-06-26 2010-09-14 Current Technologies, Llc Power line coupling device and method
US20090002137A1 (en) * 2007-06-26 2009-01-01 Radtke William O Power Line Coupling Device and Method
US20090085726A1 (en) * 2007-09-27 2009-04-02 Radtke William O Power Line Communications Coupling Device and Method
US20100109907A1 (en) * 2008-11-06 2010-05-06 Manu Sharma System, Device and Method for Communicating over Power Lines
US8279058B2 (en) 2008-11-06 2012-10-02 Current Technologies International Gmbh System, device and method for communicating over power lines
US20100111199A1 (en) * 2008-11-06 2010-05-06 Manu Sharma Device and Method for Communicating over Power Lines
US8188855B2 (en) 2008-11-06 2012-05-29 Current Technologies International Gmbh System, device and method for communicating over power lines
US20100109862A1 (en) * 2008-11-06 2010-05-06 Manu Sharma System, Device and Method for Communicating over Power Lines
US20110013327A1 (en) * 2009-07-17 2011-01-20 Searete Llc Smart link coupled to power line
US20110012437A1 (en) * 2009-07-17 2011-01-20 Searete Llc Maintaining insulators in power transmission systems
US20110011624A1 (en) * 2009-07-17 2011-01-20 Searete Llc Smart link coupled to power line
US8426736B2 (en) 2009-07-17 2013-04-23 The Invention Science Fund I Llc Maintaining insulators in power transmission systems
US20110012583A1 (en) * 2009-07-17 2011-01-20 Searete Llc, A Limited Liability Corporation Of The State Of Delaware Use pairs of transformers to increase transmission line voltage
US8456168B2 (en) 2009-07-17 2013-06-04 The Invention Science Fund I Llc Systems and methods for testing the standoff capability of an overhead power transmission line
US20110011622A1 (en) * 2009-07-17 2011-01-20 Searete Llc, A Limited Liability Corporation Maintaining insulators in power transmission systems
US8563867B2 (en) 2009-07-17 2013-10-22 The Invention Science Fund I, Llc Smart link coupled to power line
US9225170B2 (en) 2009-07-17 2015-12-29 The Invention Science Fund I, Llc Use pairs of transformers to increase transmission line voltage
US8427800B2 (en) * 2009-07-17 2013-04-23 The Invention Science Fund I Llc Smart link coupled to power line
US8692537B2 (en) 2009-07-17 2014-04-08 The Invention Science Fund I, Llc Use pairs of transformers to increase transmission line voltage
US20110011623A1 (en) * 2009-07-17 2011-01-20 Searete Llc Smart link coupled to power line
US20110011621A1 (en) * 2009-07-17 2011-01-20 Searete Llc, A Limited Liability Corporation Of The State Of Delaware Smart link coupled to power line
US8907529B2 (en) 2009-07-17 2014-12-09 The Invention Science Fund I, Llc Smart link coupled to power line
US20110101989A1 (en) * 2009-07-17 2011-05-05 Searete Llc, A Limited Liability Corporation Of The State Of Delaware Systems and methods for testing the standoff capability of an overhead power transmission line
US20110215790A1 (en) * 2009-07-17 2011-09-08 Searete Llc Use pairs of transformers to increase transmission line voltage
US20110018704A1 (en) * 2009-07-24 2011-01-27 Burrows Zachary M System, Device and Method for Providing Power Line Communications
CN103532244A (en) * 2012-07-02 2014-01-22 张大堃 Equipotential power supply and signal transmission system of high-voltage power transmission line on-line monitoring device
CN103398741A (en) * 2013-07-31 2013-11-20 成都电业局双流供电局 Wireless transmission-based power transmission line on-line monitoring system
CN103944611A (en) * 2014-04-02 2014-07-23 中国人民解放军信息工程大学 Unbalanced feed network system
CN104316107A (en) * 2014-10-28 2015-01-28 成都峰达科技有限公司 Electric transmission line monitoring system
US9614588B2 (en) * 2015-01-29 2017-04-04 Koolbridge Solar, Inc. Smart appliances
US9785213B2 (en) 2015-01-29 2017-10-10 Koolbridge Solar, Inc. Addressable electrical outlets
US9793953B2 (en) 2015-01-29 2017-10-17 Koolbridge Solar, Inc. Smart appliances
CN105656215A (en) * 2016-03-25 2016-06-08 浙江大学 Wireless energy transmission device for high-voltage transmission line non-contact power supply and method thereof

Also Published As

Publication number Publication date Type
US7187276B2 (en) 2007-03-06 grant
US20040246107A1 (en) 2004-12-09 application

Similar Documents

Publication Publication Date Title
US6710704B2 (en) Power transfer apparatus for concurrently transmitting data and power over data wires
US7876174B2 (en) Power line coupling device and method
US7308103B2 (en) Power line communication device and method of using the same
US20100073193A1 (en) Transparent Routing in a Power Line Carrier Network
US6977578B2 (en) Method of isolating data in a power line communications network
US7358808B2 (en) Method and device for amplification of data signals over power lines
US7053756B2 (en) Facilitating communication of data signals on electric power systems
Philipps Performance measurements of powerline channels at high frequencies
US20030071719A1 (en) Method and apparatus for attaching power line communications to customer premises
US20050226200A1 (en) A Power Line Communication System that Enables Low-Cost Last Mile Access to any Legacy or Emerging Network Infrastructure
US6396392B1 (en) High frequency network communications over various lines
US6885674B2 (en) Communications system for providing broadband communications using a medium voltage cable of a power system
US7450000B2 (en) Power line communications device and method
US7224243B2 (en) Power line coupling device and method of using the same
US20050208825A1 (en) Integrated connector for powerline network and power supply
US7508834B2 (en) Wireless link for power line communications system
US20060221995A1 (en) Multi-function modem device
US7173938B1 (en) Method and apparatus for processing outbound data within a powerline based communication system
US5406249A (en) Method and structure for coupling power-line carrier current signals using common-mode coupling
US7194528B1 (en) Method and apparatus for processing inbound data within a powerline based communication system
US6624532B1 (en) System and method for utility network load control
US6040759A (en) Communication system for providing broadband data services using a high-voltage cable of a power system
US20060193313A1 (en) Local area network above telephony infrastructure
US20040130413A1 (en) Power supply system and method using analog coupling circuitry for power-line communications
US20040218688A1 (en) Ultra-wideband communication through a power grid

Legal Events

Date Code Title Description
AS Assignment

Owner name: CURRENT TECHNOLOGIES, L.L.C., MARYLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KLINE, PAUL A.;REEL/FRAME:012394/0104

Effective date: 20010926

AS Assignment

Owner name: AP CURRENT HOLDINGS, LLC, PENNSYLVANIA

Free format text: SECURITY AGREEMENT;ASSIGNOR:CURRENT TECHNOLOGIES, LLC;REEL/FRAME:020518/0001

Effective date: 20080129

Owner name: AP CURRENT HOLDINGS, LLC,PENNSYLVANIA

Free format text: SECURITY AGREEMENT;ASSIGNOR:CURRENT TECHNOLOGIES, LLC;REEL/FRAME:020518/0001

Effective date: 20080129

AS Assignment

Owner name: CURRENT TECHNOLOGIES, LLC, MARYLAND

Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:AP CURRENT HOLDINGS, LLC;REEL/FRAME:021096/0131

Effective date: 20080516

Owner name: CURRENT TECHNOLOGIES, LLC,MARYLAND

Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:AP CURRENT HOLDINGS, LLC;REEL/FRAME:021096/0131

Effective date: 20080516