Patents by Inventor J. Marcus Stewart

J. Marcus Stewart has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10070499
    Abstract: A system to control an electrical device, such as a lighting component or set of components. The system includes a set of connection lines, a power control module and a load interface component. The power control module is responsive to an alternating current source being connected to one of a first connection line and a second connection line to provide a regulated voltage signal output. A load interface component receives the regulated voltage signal output to control the electrical device.
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: September 4, 2018
    Assignee: Brilliant Home Technology, Inc.
    Inventors: J. Marcus Stewart, Aaron T. Emigh, Steven Stanek
  • Publication number: 20180192496
    Abstract: A system to control an electrical device, such as a lighting component or set of components. The system may include a set of connection lines, a power control module and a load interface component. The power control module is responsive to an alternating current source being connected to one of a first connection line or a second connection line, to provide a regulated voltage signal output. A load interface component receives the regulated voltage signal output to control the load device.
    Type: Application
    Filed: January 3, 2018
    Publication date: July 5, 2018
    Inventors: J. Marcus Stewart, Aaron T. Emigh, Steven Stanek
  • Publication number: 20110298301
    Abstract: An apparatus, system, and method includes a housing having at least one inlet plug suitable for connection to an alternating current (AC) power outlet and at least one outlet receptacle suitable receiving an AC plug connected to a load device. An AC measurement module is contained within the housing and is coupled to the inlet plug and the outlet receptacle to measure AC voltage and AC current usage of the load device connected to the outlet receptacle. A communication module is operative to transmit AC power values calculated based on the measured AC voltage and AC current in accordance with the IEEE 802.11 wireless networking standard (Wi-Fi) to a wireless network access point.
    Type: Application
    Filed: April 19, 2011
    Publication date: December 8, 2011
    Applicant: Equal Networks, Inc.
    Inventors: Simon Wong, J. Marcus Stewart, Richard Mincher, John Metzger, Dale Loia, Eric Wai, Jacob Chang
  • Patent number: 6600775
    Abstract: 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 detect carrier and data in the presence of certain channel distortion. The receiver switches between the standard and alternate pattern to provide improved detection. In another embodiment an adaptive pattern is used which is developed from the receive signal. For instance, the signal over several bit times is averaged to provide a pattern which is correlated with a receive signal.
    Type: Grant
    Filed: August 8, 2002
    Date of Patent: July 29, 2003
    Assignee: Echelon Corporation
    Inventors: Philip H. Sutterlin, J. Marcus Stewart
  • Publication number: 20020191679
    Abstract: 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 detect carrier and data in the presence of certain channel distortion. The receiver switches between the standard and alternate pattern to provide improved detection. In another embodiment an adaptive pattern is used which is developed from the receive signal. For instance, the signal over several bit times is averaged to provide a pattern which is correlated with a receive signal.
    Type: Application
    Filed: August 8, 2002
    Publication date: December 19, 2002
    Inventors: Philip H. Sutterlin, J. Marcus Stewart
  • Patent number: 6473450
    Abstract: 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 detect carrier and data in the presence of certain channel distortion. The receiver switches between the standard and alternate pattern to provide improved detection. In another embodiment an adaptive pattern is used which is developed from the receive signal. For instance, the signal over several bit times is averaged to provide a pattern which is correlated with a receive signal.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: October 29, 2002
    Assignee: Echelon Corporation
    Inventors: Philip H. Sutterlin, J. Marcus Stewart
  • Patent number: 6301290
    Abstract: 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 detect carrier and data in the presence of certain channel distortion. The receiver switches between the standard and alternate pattern to provide improved detection. In another embodiment an adaptive pattern is used which is developed from the receive signal. For instance, the signal over several bit times is averaged to provide a pattern which is correlated with a receive signal.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: October 9, 2001
    Assignee: Echelon Corporation
    Inventors: Philip H. Sutterlin, J. Marcus Stewart
  • Patent number: 6108368
    Abstract: 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 detect carrier and data in the presence of certain channel distortion. The receiver switches between the standard and alternate pattern to provide improved detection. In another embodiment an adaptive pattern is used which is developed from the receive signal. For instance, the signal over several bit times is averaged to provide a pattern which is correlated with a receive signal.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: August 22, 2000
    Assignee: Echelon Corporation
    Inventors: Philip H. Sutterlin, J. Marcus Stewart
  • Patent number: 5937003
    Abstract: 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 detect carrier and data in the presence of certain channel distortion. The receiver switches between the standard and alternate pattern to provide improved detection. In another embodiment an adaptive pattern is used which is developed from the receive signal. For instance, the signal over several bit times is averaged to provide a pattern which is correlated with a receive signal.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: August 10, 1999
    Assignee: Echelon Corporation
    Inventors: Philip H. Sutterlin, J. Marcus Stewart
  • Patent number: 5812557
    Abstract: 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 locations under test. Each PLCA is coupled to a power line communication network via an electrical outlet and power lines. In actual operation, one of the PLCAs acts as a data transmitter and the other PLCA acts as a data receiver. The mode of operation of the PLCA can be dynamically altered during operation of the system. The PLCA comprises control logic that receives command inputs from a keypad, generates data packets for transmission on the power line communication network, receives and analyzes data packets received from the power line communication network, detects the power line signal and/or noise level and drives the LED display accordingly, and displays packet transmission information on an LCD display.
    Type: Grant
    Filed: September 4, 1997
    Date of Patent: September 22, 1998
    Assignee: Echelon Corporation
    Inventors: J. Marcus Stewart, Glen M. Riley, Philip H. Sutterlin, Marie E. Andrus, Amy O. Hurlbut, Milton T. Tormey
  • Patent number: 5748671
    Abstract: 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 detect carrier and data in the presence of certain channel distortion. The receiver switches between the standard and alternate pattern to provide improved detection. In another embodiment an adaptive pattern is used which is developed from the receive signal. For instance, the signal over several bit times is averaged to provide a pattern which is correlated with a receive signal.
    Type: Grant
    Filed: December 29, 1995
    Date of Patent: May 5, 1998
    Assignee: Echelon Corporation
    Inventors: Philip H. Sutterlin, J. Marcus Stewart
  • Patent number: 5703766
    Abstract: 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 allowing the capacitor to recharge. A timing circuit is used to determine when to begin transmission to compensate for variables in the node such as line voltages and part tolerances.
    Type: Grant
    Filed: March 5, 1996
    Date of Patent: December 30, 1997
    Assignee: Echelon Corporation
    Inventors: Philip H. Sutterlin, J. Marcus Stewart, Amy O. Hurlbut
  • Patent number: 5701240
    Abstract: 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 capacitor. During the time that the inductor is coupled to that AC line, the switched leg is open. For instance, the signal used to close the switch also prevents a triac in the switched leg from conducting. When the voltage on the capacitor drops to a predetermined level transmission from the transmitter is inhibited. A timing circuit is used to determine when to begin transmissions to compensate for variables in the node such as line voltages and part tolerances.
    Type: Grant
    Filed: May 17, 1996
    Date of Patent: December 23, 1997
    Assignee: Echelon Corporation
    Inventors: Walter J. Downey, Philip H. Sutterlin, J. Marcus Stewart, Amy O. Hurlbut
  • Patent number: 5579335
    Abstract: 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 correlation value determined from the ICS in that sub-band) is delayed relative to the other sub-band. The ICS (or correlation values) from the two sub-bands are recombined after the delay and processed in an ordinary manner. The time delay is selected so as to compensate for the distortion. In one embodiment, the correlation peaks in each of the sub-bands are examined and the time delay is determined by, in effect, aligning the peaks in the two sub-bands in time so that when the two sub-bands are combined, a sharper correlation peak is obtained.
    Type: Grant
    Filed: September 27, 1995
    Date of Patent: November 26, 1996
    Assignee: Echelon Corporation
    Inventors: Philip H. Sutterlin, J. Marcus Stewart
  • Patent number: 5553081
    Abstract: 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 detects is initially determined by a quick qualification process. This initial number is subsequently adjusted by a more accurate qualification process. The transmitted signal is modulated with a particular pattern. Upon receiving the signal, it is demodulated to retrieve that pattern. The demodulated pattern is correlated against multiple reference patterns and combined to provide a measure of peak correlation that is independent of pattern phase. Furthermore, a tone detector is used to distinguish valid signals from interfering tones. Two different types of detection methods are performed in parallel. One is based on the energy of the received signal, whereas the other is based on the correlation of the received signal.
    Type: Grant
    Filed: April 8, 1994
    Date of Patent: September 3, 1996
    Assignee: Echelon Corporation
    Inventors: Walter J. Downey, Philip H. Sutterlin, Amy O. Hurlbut, J. Marcus Stewart, Benjamin W. Chui, Robert A. Dolin, Jr.
  • Patent number: 5463662
    Abstract: An apparatus for snubbing or blanking digital signals representing a band of signals that includes an encoded carrier signal transmitted over a power line. An average signal level is compared with the instantaneous signal level to develop a blanking circuit control signal. Additionally, snubbing occurs in the circuit which determines the average signal level to prevent noise from building-up the average signal level. A hold-off signal is used in this circuit to prevent the average signal level from being latched permanently low. A unique infinite impulse filter subtracts out the D.C. offset thereby improving the dynamic range of the blanking. Additionally, the average signal level is used by AGC logic to control the gain at the front end of the apparatus. The state and switching of the AGC is controlled to minimize errors.
    Type: Grant
    Filed: April 8, 1994
    Date of Patent: October 31, 1995
    Assignee: Echelon Corporation
    Inventors: Philip H. Sutterlin, Walter J. Downey, Benjamin W. Chui, J. Marcus Stewart, Amy O. Hurlbut
  • Patent number: 5249270
    Abstract: The present invention works in combination with an integrated set of hardware and software tools that support rapid design, programming, debugging, implementation, and testing of local operation network local operation network nodes and applications. These hardware and software tools speed development by enabling developers to use object-oriented concepts, such as network variables and input/output objects, rather than low-level constructs. The development environment operates with an IBM PC/AT or compatible computer and can grow from a single emulated application node to a completely distributed system of up to 24 emulated nodes and hundreds of remote nodes. The invention is mainly directed to a repeater circuit which is part of a control processor board, and is used to send and receive the serial signals between the PC and connected development stations, and the serial data protocol which enables the development stations to be automatically configured at system start-up.
    Type: Grant
    Filed: March 29, 1991
    Date of Patent: September 28, 1993
    Assignee: Echelon Corporation
    Inventors: J. Marcus Stewart, Karl Osterlund