| Patent Number |
Title Of Patent |
Date Issued |
| D413863 |
Electrical housing with module |
September 14, 1999 |
|
| D405422 |
Electrical housing |
February 9, 1999 |
|
| D405421 |
Electrical housing |
February 9, 1999 |
|
| D404721 |
Electrical housing with module |
January 26, 1999 |
|
| 7583202 |
Method and apparatus for an electric meter |
September 1, 2009 |
| An improved meter and its operation is described. The meter can be a part of a larger automated meter reading process that allows for remote reading of the meter though power line communication. Using a microcomputer core, the meter processes incoming analog data and can calculate se |
| 7277672 |
System and method for selecting repeaters |
October 2, 2007 |
| A method is described for selecting repeaters comprising: transmitting a first signal from a first node to a second node; measuring signal strength of the first signal at the second node; transmitting a second signal from the second node to the first node; measuring signal strength o |
| 7227341 |
Circuit for use with switched leg power supply |
June 5, 2007 |
| A circuit for use with a power supply coupled in a switched leg of, for example, a lighting circuit, is described. The circuit provides a low impedance near the zero crossing of the AC signal and a high impedance thereafter, thereby allowing the power supply to draw current that bypa |
| 7198521 |
Power line phase coupler system |
April 3, 2007 |
| A power line phase coupler system for repeating data signals between power line phases that can be easily installed by a user. The power line phase coupler system includes a housing, a female connector positioned within the housing, a male connector electrically connected to the female |
| 7187986 |
Internet based home communications system |
March 6, 2007 |
| An Internet based home communications system for allowing a homeowner to monitor and control various features of their home. The system comprises a plurality of control devices positioned within a home, a control unit in communication with the plurality of control devices wherein the |
| 7103016 |
System and method for providing transaction control on a data network |
September 5, 2006 |
| A system is described having: a source node configured to transmit a data packet to a target node across a data network, the source node having a first retry timer set to a first retry time period after which the source node will retransmit a data packet if it has not received an appropr |
| 6896551 |
Power line phase coupler system |
May 24, 2005 |
| A power line phase coupler system for repeating data signals between power line phases that can be easily installed by a user. The power line phase coupler system includes a housing, a female connector positioned within the housing, a male connector electrically connected to the female |
| 6862430 |
System and method for selecting repeaters |
March 1, 2005 |
| A method is described for selecting repeaters comprising: transmitting a first signal from a first node to a second node; measuring signal strength of the first signal at the second node; transmitting a second signal from the second node to the first node; measuring signal strength of th |
| 6836508 |
Method and apparatus for using unintended radio frequency propagation in a network |
December 28, 2004 |
| An improvement in a network is described where messages are communicated over different somewhat unconnected branches of a network. The invention is used where the messages cause radio frequency radiation from lines in the network which typically is unintended. The radiation from one bra |
| 6741571 |
Method and apparatus for using unintended radio frequency propagation in a network |
May 25, 2004 |
| An improvement in a network is described where messages are communicated over different somewhat unconnected branches of a network. The invention is used where the messages cause radio frequency radiation from lines in the network which typically is unintended. The radiation from one bra |
| 6694209 |
Cell fabricated as an IC with a redesigned transceiver package which can be multiplexed to diffe |
February 17, 2004 |
| A circuit improvement which permits a cell fabricated as an integrated circuit and a transceiver package having a transceiver and transformer to be redesigned into a single integrated circuit without redesigning a printed circuit board is disclosed. A multiplexer within the cell cont |
| 6636117 |
Input/output buffer incorporating filter for powerline communications line |
October 21, 2003 |
| An improvement in a buffer for driving a signal onto a power line is described. The buffer includes a second order filter. With the improvement, the collector-to-emitter potential of an emitter follower is maintained constant to substantially reduce the distortion associated with bas |
| 6600775 |
Adaptive reference pattern for spread spectrum detection claims |
July 29, 2003 |
| A receiver for detecting spread spectrum binary data particularly on a power line in the presence of channel distortion. In one embodiment a standard pattern ideally suited for minimal distortion in the channel is used in conjunction with an alternate pattern which is developed to better |
| 6580950 |
Internet based home communications system |
June 17, 2003 |
| An Internet based home communications system for allowing a homeowner to monitor and control various features of their home from a distant location via a global computer network. The inventive system comprises a plurality of control devices positioned within a home, a control unit in |
| 6507260 |
Electrical transformer for use with twisted pair |
January 14, 2003 |
| A toroidal transformer for a communications application where a first winding is wound on the core. A separator comprising a pair of annular-shaped cups then encloses the core and first winding. A second winding is wound on the outer surface of the separator. The separator, fabricate |
| 6493739 |
Task scheduling in an event driven environment |
December 10, 2002 |
| An improved programming interface which provides for event scheduling, improved variable declarations allowing for configuration of declaration parameters, and improved handling of I/O objects. In modern day computing devices and especially in networks of such devices it is important to |
| 6473450 |
Adaptive reference pattern for spread spectrum detection |
October 29, 2002 |
| A receiver for detecting spread spectrum binary data particularly on a power line in the presence of channel distortion. In one embodiment a standard pattern ideally suited for minimal distortion in the channel is used in conjunction with an alternate pattern which is developed to better |
| 6442381 |
Method and apparatus for defining and generating local oscillator signals for down converter |
August 27, 2002 |
| A method and apparatus for defining and generating a digital waveform such as used for the local oscillator for a down converter in a receiver is disclosed. The method and apparatus is particularly useful where the digital waveform is not an integer submultiple of a reference signal. A |
| 6414968 |
Transmission and detection of data in a dual channel transceiver |
July 2, 2002 |
| A dual channel transceiver which operates at two different frequencies and which may be used in a network using older transceivers operating at a single frequency is disclosed. A pilot tone is transmitted by the transceiver when it is using the second channel to cause the older trans |
| 6353861 |
Method and apparatus for treating a logical programming expression as an event in an event-drive |
March 5, 2002 |
| An improved programming interface which provides for event scheduling, improved variable declarations allowing for configuration of declaration parameters, and improved handling of I/O objects. In modern day computing devices and especially in networks of such devices it is important to |
| 6301290 |
Adaptive reference pattern for spread spectrum detection |
October 9, 2001 |
| A receiver for detecting spread spectrum binary data particularly on a power line in the presence of channel distortion. In one embodiment a standard pattern ideally suited for minimal distortion in the channel is used in conjunction with an alternate pattern which is developed to better |
| 6295625 |
Error correcting using signal anomaly as a hint |
September 25, 2001 |
| A "hint" signal is developed which points to suspected erroneous bits in received data by examining anomalies in the signal. More particularly, a delta phase pointer which quantifies one of the anomalies is used. The realigning of an IQ pointer provides an additional anomaly which is |
| 6182130 |
Method for enhancing the performance of a network |
January 30, 2001 |
| An improved apparatus and method for communicating information in a networked system wherein network variables are employed to accomplish such communication. Network variables allow for standardized communication of data between nodes in a network. A first node may be programmed, for |
| 6108368 |
Adaptive reference pattern for spread spectrum detection claims |
August 22, 2000 |
| A receiver for detecting spread spectrum binary data particularly on a power line in the presence of channel distortion. In one embodiment a standard pattern ideally suited for minimal distortion in the channel is used in conjunction with an alternate pattern which is developed to better |
| 6043635 |
Switched leg power supply |
March 28, 2000 |
| A power supply for operating from a switched leg of an AC power line is described. A switch provides current during the beginning of each AC half cycle to an inductor and charges a capacitor. When the switch is open, the inductor continues to charge the capacitor. During the time that th |
| 5942814 |
Module for controlling current to a load including sensing of the position of a switch |
August 24, 1999 |
| A module for interconnecting an AC power line to a load such as a lamp, which includes a first switch. The module detects the state of the first switch and then provides power to the load when the switch is closed. Sequentially opening and closing the first switch can be used as a comman |
| 5937003 |
Adaptive reference pattern for spread spectrum detection claims |
August 10, 1999 |
| A receiver for detecting spread spectrum binary data particularly on a power line in the presence of channel distortion. In one embodiment a standard pattern ideally suited for minimal distortion in the channel is used in conjunction with an alternate pattern which is developed to better |
| 5856972 |
Duplicate message detection method and apparatus |
January 5, 1999 |
| A method of determining a transaction identifier for a message to be sent from a node on a network. The node has an address table and a memory. The method comprising the steps of: accessing the address table to determine an address for the message; and accessing the transaction identifie |
| 5844888 |
Network and intelligent cell for providing sensing, bidirectional communications and control |
December 1, 1998 |
| A network for providing sensing and control using cells having distributed intelligence. A link between a first cell and a second cell is established by assigning some cells as repeaters. A first packet is modified with the ID of the cells that rebroadcast the packet as it makes its way |
| 5828676 |
Method and apparatus for robust communication based upon angular modulation |
October 27, 1998 |
| A robust encoding and decoding system of the present invention for communicating binary information using angular modulation system is disclosed. Binary information to be transmitted is data words consisting of 8 data bits, a parity bit, and two additional coding bits at the end of t |
| 5812557 |
Power line communications analyzer |
September 22, 1998 |
| A power line communications analyzer (PLCA) provides a signal strength metering system and selectable signal attenuation functions for adjusting the transmitting unit's attenuation and measuring error rate without the need for a user to be present at both the sending and receiving locati |
| 5754779 |
Selecting a protocol class of service for a network variable |
May 19, 1998 |
| An improved apparatus and method for communicating information in a networked system wherein network variables are employed to accomplish such communication. Network variables allow for standardized communication of data between nodes in a network. A first node may be programmed, for |
| 5748671 |
Adaptive reference pattern for spread spectrum detection |
May 5, 1998 |
| A receiver for detecting spread spectrum binary data particularly on a power line in the presence of channel distortion. In one embodiment a standard pattern ideally suited for minimal distortion in the channel is used in conjunction with an alternate pattern which is developed to better |
| 5737529 |
Networked variables |
April 7, 1998 |
| An improved apparatus and method for communicating information in a networked system wherein network variables are employed to accomplish such communication. Network variables allow for standardized communication of data between nodes in a network. A first node may be programmed, for |
| 5703766 |
Capacitor power supply for intermittent transmission |
December 30, 1997 |
| A power supply for a node that transmits data onto a power line. A DC supply and capacitor supply power to the node where the output current of the DC supply may be less than required for transmission by the node. When the voltage on the capacitor drops to Vmin transmissions are stopped |
| 5701240 |
Apparatus for powering a transmitter from a switched leg |
December 23, 1997 |
| A power supply for operating from a switched leg of an AC power line and for powering a transmitter is described. A switch provides current during the beginning of each AC half cycle to an inductor and charges a capacitor. When the switch is open, the inductor continues to charge the |
| 5579482 |
Method and apparatus for storing interface information in a computer system |
November 26, 1996 |
| An interface file structure for allowing transfer of information between nodes in a network and a binding process for configuring nodes in the network. The interface offers an advantageous format designed to provide for minimal reading and writing of records while requiring minimal stora |
| 5579335 |
Split band processing for spread spectrum communications |
November 26, 1996 |
| A method and apparatus for compensating for distortion in a spread spectrum communications system particularly useful where the spread spectrum is transmitted over a power line. The information carrying signal (ICS) is split into two sub-bands and the ICS in one sub-band (or a correlatio |
| 5553081 |
Apparatus and method for detecting a signal in a communications system |
September 3, 1996 |
| In a communications system, an apparatus and method for detecting a valid signal from noise. An adaptive threshold is used to qualify a received signal. The adaptive threshold is set according to the number of false detects occurring within a given time interval. The number of false |
| 5548614 |
Method and apparatus for interfacing between a twisted pair and an intelligent cell |
August 20, 1996 |
| A transceiver module for coupling between cells in a distributed intelligence network and a twisted pair line. The module receives power from the line and provides power to its respective cell. At the end of transmitting a packet, the transceiver transmits a code violation, then an a |
| 5521491 |
Phase detecting device for determining phase angle between two electrical signals |
May 28, 1996 |
| A transmitting box is connected to a first electrical outlet in a building. The phase of the first electrical outlet is used as the reference phase. The transmitter box senses each of the zero-cross-overs of the reference phase and injects a data packet of the data carrier frequency at e |
| 5500852 |
Method and apparatus for network variable aliasing |
March 19, 1996 |
| A method and apparatus for resolving connection conflicts in a network is provide. A network connection point on a node cannot be added to a first network connection when it already belongs to a second network connection. When a particular configuration would otherwise violate this rule, |
| 5491402 |
Apparatus and method for providing AC isolation while supplying DC power |
February 13, 1996 |
| A source power coupler for coupling a power source to a first transmission line and a second transmission line. DC power from the power source is conducted by the source power coupler to the first and the second transmission lines while AC signals on the first and the second transmis |
| 5490276 |
Programming language structures for use in a network for communicating, sensing and controlling |
February 6, 1996 |
| An improved programming interface which provides for event scheduling, improved variable declarations allowing for configuration of declaration parameters, and improved handling of I/O objects. In modern day computing devices and especially in networks of such devices it is important to |
| 5485040 |
Powerline coupling network |
January 16, 1996 |
| An apparatus for reducing power line communication signal attenuation is disclosed. This apparatus provides for reduction of power line communication signal attenuation by balancing reactance between chosen circuit elements and the typical impedances found in a house, structure, or s |
| 5475687 |
Network and intelligent cell for providing sensing, bidirectional communications and control |
December 12, 1995 |
| A cell for use in a network which provides sensing, control and communications. Each cell, as part of its manufacturing process, includes a unique 48-bit identification number. A terminal on the cell enables the broadcast of this unique number onto the network during initialization of |
