Patents by Inventor Stuart Patterson
Stuart Patterson 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).
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Patent number: 11942473Abstract: Electrostatic discharge protection for high speed transceiver interface is disclosed. In one aspect, an electrical overstress (EOS) protection device includes an anode terminal and a cathode terminal, a silicon controlled rectifier, a second NPN bipolar transistor including a base connected to the anode terminal and an emitter connected to an emitter of the first PNP bipolar transistor, and a second PNP bipolar transistor including an emitter connected to an emitter of the second NPN bipolar transistor and a base connected to a base of the first PNP bipolar transistor. Two or more paths for current conduction are present during a positive overstress transient that increases a voltage of the anode terminal relative to the cathode terminal, including a first path through the silicon controlled rectifier and a second path through the second NPN bipolar transistor and the second PNP bipolar transistor.Type: GrantFiled: June 14, 2022Date of Patent: March 26, 2024Assignee: Analog Devices, Inc.Inventors: Sirui Luo, Srivatsan Parthasarathy, Piotr Olejarz, Daniel Boyko, Ara Arakelian, Stuart Patterson
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Publication number: 20240004446Abstract: In some examples of both networks and methods, a data communication network includes a plurality of nodes. The nodes include a main node (MN) and at least one sub node (SNi=SN0, . . . SNX). Each node includes a node transceiver. The node transceiver is operable to perform data communication in accordance with a first network protocol for power over data via a pair of conductors (e.g., the conductors of bus). A physical layer includes a cable segment (e.g., the cable segment of bus) between each node. Each cable segment includes a plurality of pairs of conductors (e.g., pairs) and a connector (e.g., 8P8C connector—though other connectors with multiple pairs of conductors can be used) at each end. A first pair of the conductors (e.g., connected to pin 4 and pin 5 of the 8P8C connector) implements the first network protocol between the nodes. One or more of the remaining pairs of the conductors provide supplemental power to the nodes 102.Type: ApplicationFiled: July 1, 2023Publication date: January 4, 2024Inventors: Martin KESSLER, Stuart PATTERSON
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Publication number: 20230402448Abstract: Electrostatic discharge protection for high speed transceiver interface is disclosed. In one aspect, an electrical overstress (EOS) protection device includes an anode terminal and a cathode terminal, a silicon controlled rectifier, a second NPN bipolar transistor including a base connected to the anode terminal and an emitter connected to an emitter of the first PNP bipolar transistor, and a second PNP bipolar transistor including an emitter connected to an emitter of the second NPN bipolar transistor and a base connected to a base of the first PNP bipolar transistor. Two or more paths for current conduction are present during a positive overstress transient that increases a voltage of the anode terminal relative to the cathode terminal, including a first path through the silicon controlled rectifier and a second path through the second NPN bipolar transistor and the second PNP bipolar transistor.Type: ApplicationFiled: June 14, 2022Publication date: December 14, 2023Inventors: Sirui Luo, Srivatsan Parthasarathy, Piotr Olejarz, Daniel Boyko, Ara Arakelian, Stuart Patterson
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Patent number: 10852799Abstract: Disclosed herein are systems and techniques for adaptive use of multiple power supplies in a communication system. For example, in some embodiments, a slave device may include: an upstream transceiver to couple to an upstream link of a bus of a communication system; and circuitry to couple to the upstream link of the bus and to a local power supply, wherein the circuitry is to switch from providing the local power supply to power the slave device to providing bus power supplied by the upstream link of the bus to power the slave device.Type: GrantFiled: June 27, 2018Date of Patent: December 1, 2020Assignee: Analog Devices Global Unlimited CompanyInventors: Stuart Patterson, Martin Kessler, Prashant Tripathi
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Publication number: 20190018467Abstract: Disclosed herein are systems and techniques for adaptive use of multiple power supplies in a communication system. For example, in some embodiments, a slave device may include: an upstream transceiver to couple to an upstream link of a bus of a communication system; and circuitry to couple to the upstream link of the bus and to a local power supply, wherein the circuitry is to switch from providing the local power supply to power the slave device to providing bus power supplied by the upstream link of the bus to power the slave device.Type: ApplicationFiled: June 27, 2018Publication date: January 17, 2019Applicant: Analog Devices Global Unlimited CompanyInventors: Stuart PATTERSON, Martin KESSLER, Prashant TRIPATHI
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Patent number: 9772665Abstract: In an example embodiment, a power switching circuit of an automobile audio bus (A2B) chip is provided in a bi-directional, multi-node two-wire conductor system that includes a plurality of A2B chips interconnected on a twisted wire pair bus (A2B bus), with at least one A2B chip functioning as a master and the remaining A2B chips functioning as slaves. The power switching circuit of the A2B chip powers up a next downstream A2B chip in the A2B bus sequentially according to a power switching procedure, and the power switching circuit is configured to detect faults in the A2B bus before, during, and after the power switching procedure. Each A2B chip enables power to the next downstream A2B chip without risk of damage to any components in the system due to line faults on the downstream A2B bus, or collapse of the power supply at the local A2B chip.Type: GrantFiled: December 11, 2013Date of Patent: September 26, 2017Assignee: ANALOG DEVICES, INC.Inventor: Stuart Patterson
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Patent number: 9211101Abstract: A method and device for real-time mechanical and dosimetric quality assurance measurements in radiation therapy provides a unified measurement of mechanical motion and radiation components of the machine. The device includes an imaging surface for receiving multiple energy sources. The imaging surface has an imaging plane positioned on a same plane as an isocenter of a medical accelerator. A camera measures and records data related to the multiple energy sources. A mirror system can be used to direct the multiple energy sources to the camera for further processing. However, in some instances the mirror system may not be necessary. Accordingly, a single device can be used to unify the measurement of mechanical motion and radiation component of the machine. The device can also include computer control in order to automate the movement of the device and/or automation of the QA protocol.Type: GrantFiled: May 15, 2013Date of Patent: December 15, 2015Assignee: The Johns Hopkins UniversityInventors: John Wai-chiu Wong, Michael Stuart Patterson, Iulian Ioan Iordachita
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Publication number: 20140267697Abstract: A method and device for real-time mechanical and dosimetric quality assurance measurements in radiation therapy provides a unified measurement of mechanical motion and radiation components of the machine. The device includes an imaging surface for receiving multiple energy sources. The imaging surface has an imaging plane positioned on a same plane as an isocenter of a medical accelerator. A camera measures and records data related to the multiple energy sources. A mirror system can be used to direct the multiple energy sources to the camera for further processing. However, in some instances the mirror system may not be necessary. Accordingly, a single device can be used to unify the measurement of mechanical motion and radiation component of the machine. The device can also include computer control in order to automate the movement of the device and/or automation of the QA protocol.Type: ApplicationFiled: May 15, 2013Publication date: September 18, 2014Applicant: The Johns Hopkins UniversityInventors: John Wai-chiu Wong, Michael Stuart Patterson, Iulian Ioan Iordachita
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Publication number: 20140101477Abstract: In an example embodiment, a power switching circuit of an automobile audio bus (A2B) chip is provided in a bi-directional, multi-node two-wire conductor system that includes a plurality of A2B chips interconnected on a twisted wire pair bus (A2B bus), with at least one A2B chip functioning as a master and the remaining A2B chips functioning as slaves. The power switching circuit of the A2B chip powers up a next downstream A2B chip in the A2B bus sequentially according to a power switching procedure, and the power switching circuit is configured to detect faults in the A2B bus before, during, and after the power switching procedure. Each A2B chip enables power to the next downstream A2B chip without risk of damage to any components in the system due to line faults on the downstream A2B bus, or collapse of the power supply at the local A2B chip.Type: ApplicationFiled: December 11, 2013Publication date: April 10, 2014Applicant: ANALOG DEVICES, INC.Inventor: Stuart Patterson
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Patent number: 8027489Abstract: A multi-voltage biasing system with over voltage protection has an amplifier with a stage including at least one output device and one cascode protection device having a predetermined maximum recommended voltage; a biasing network is selectively responsive to a plurality of different supply voltages at least one of which is higher than the maximum recommended voltage for providing to the stage a bias voltage to operate the cascode device and output device below their maximum recommended voltages.Type: GrantFiled: July 7, 2006Date of Patent: September 27, 2011Assignee: Analog Devices, Inc.Inventors: Georges El Bacha, Stuart Patterson, Ara Arakelian
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Patent number: 7912668Abstract: A system and method for determining the true electrical characteristics of a device. A codec is configured to measure at least one electrical characteristic of a device connected to a jack and to identify the device based on the measured electrical characteristics. An updateable database is populated with application circuit information and a software routine is responsive to the measured electrical characteristic and configured to adjust the electrical characteristics measured by the codec based on the application circuit information in the database.Type: GrantFiled: June 10, 2004Date of Patent: March 22, 2011Assignee: Analog Devices, Inc.Inventors: George Stephan, Frederick Loeb, John Howley, Ludgero Leonardo, Stuart Patterson
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Patent number: 7890284Abstract: An identification system and method for recognizing a device as one of a plurality of different types of devices connected to at least one terminal of an information handling system includes supplying a test signal to a device in a test mode; measuring an electrical characteristic of the device in response to the test signal being applied to the device in the test mode; and matching a representation of the electrical characteristic of the device with representations of the electrical characteristics of the plurality of devices for recognizing the device connected to the terminal as one of the plurality of different devices.Type: GrantFiled: June 19, 2003Date of Patent: February 15, 2011Assignee: Analog Devices, Inc.Inventors: Stuart Patterson, Frederick Loeb, John Howley, Ludgero Leonardo
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Patent number: 7882879Abstract: Apparatus for bonding rubber O-Rings from cord stock, rubber extrusions and extruded tubing materials, consists of heated die-sets, holding fixtures, electronic module, assembly device, spring clamping and pneumatic clamping arrangement. The combined heated die-set and holding fixture are two separable heat conductive blocks having a common interface. Apertures are located across the interface having diameters or matching shapes of extrusions, these apertures are slightly less than the cord or extrusion dimensions, the rubber is axially mated in the open heated aperture, and will stay unlovable when the clamping device is closed. The electronic module controls both a heating and timing device for proper control of maintaining a constant temperature and accurate timing cycle.Type: GrantFiled: July 26, 2008Date of Patent: February 8, 2011Inventors: Paul Stuart Patterson, George Everett Warrin
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Patent number: 7783058Abstract: A system for verifying the identification of a device. A codec is configured to measure at least one electrical characteristic of a device connected to a jack and to identify the device based on the measured electrical characteristic. An updateable database is populated with the electrical characteristic of at least one device whose electrical characteristic was measured by the codec but not correctly identified by the codec and a software routine is responsive to the measured electrical characteristic and configured to adjust the codec's identification of the device based on the electrical characteristic stored in the database to correctly identify the device.Type: GrantFiled: June 10, 2004Date of Patent: August 24, 2010Assignee: Analog Devices, Inc.Inventors: George Stephan, Frederick Loeb, John Howley, Ludgero Leonardo, Stuart Patterson
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Publication number: 20100146154Abstract: A system for verifying the identification of a device. A codec is configured to measure at least one electrical characteristic of a device connected to a jack and to identify the device based on the measured electrical characteristic. An updateable database is populated with the electrical characteristic of at least one device whose electrical characteristic was measured by the codec but not correctly identified by the codec and a software routine is responsive to the measured electrical characteristic and configured to adjust the codec's identification of the device based on the electrical characteristic stored in the database to correctly identify the device.Type: ApplicationFiled: June 10, 2004Publication date: June 10, 2010Inventors: George Stephan, Frederick Loeb, John Howley, Ludgero Leonardo, Stuart Patterson
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Publication number: 20100112875Abstract: A system and method for determining the true electrical characteristics of a device. A codec is configured to measure at least one electrical characteristic of a device connected to a jack and to identify the device based on the measured electrical characteristics. An updateable database is populated with application circuit information and a software routine is responsive to the measured electrical characteristic and configured to adjust the electrical characteristics measured by the codec based on the application circuit information in the database.Type: ApplicationFiled: June 10, 2004Publication date: May 6, 2010Inventors: George Stephan, Frederick Loeb, John Howley, Ludgero Leonardo, Stuart Patterson
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Patent number: 7710152Abstract: A multistage dual logic level voltage translator for translating both high and low input logic levels to higher levels, at least one of which levels is above the maximum recommended voltage of transistors implementing the stages, includes an input stage for receiving input logic levels and an output stage including a high voltage converter having at least a pair of cross-coupled converter transistors responsive to the input stage and including a pair of clamping circuit connected one across each of the converter transistors, for providing the shifted low and high output logic levels.Type: GrantFiled: July 6, 2007Date of Patent: May 4, 2010Assignee: Analog Devices, Inc.Inventors: Georges El Bacha, Stuart Patterson, Daniel Boyko
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Publication number: 20100018651Abstract: Apparatus for bonding rubber O-Rings from cord stock, rubber extrusions and extruded tubing materials, consists of heated die-sets, holding fixtures, electronic module, assembly device, spring clamping and pneumatic clamping arrangement. The combined heated die-set and holding fixture are two separable heat conductive blocks having a common interface. Apertures are located across the interface having diameters or matching shapes of extrusions, these apertures are slightly less than the cord or extrusion dimensions, the rubber is axially mated in the open heated aperture, and will stay unlovable when the clamping device is closed. The electronic module controls both a heating and timing device for proper control of maintaining a constant temperature and accurate timing cycle.Type: ApplicationFiled: July 26, 2008Publication date: January 28, 2010Inventors: Paul Stuart Patterson, George Everett Warrin
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Publication number: 20090207544Abstract: An output driver in an integrated circuit includes a driver circuit operable by a power supply voltage and coupled to an output pad, and a driver power conditioner configured to generate a fractional pad voltage in response to a voltage on the output pad and to provide the fractional pad voltage to at least one transistor of the driver circuit as a protected supply voltage in response to an absence of the power supply voltage.Type: ApplicationFiled: February 15, 2008Publication date: August 20, 2009Applicant: Analog Devices, Inc.Inventors: Daniel T. Boyko, Stuart Patterson
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Patent number: 7573313Abstract: A voltage level translator provides an output signal having an external voltage in response to an input signal having an internal voltage. The voltage level translator includes first and second input signal transistors, first and second output signal transistors, and includes a signal stabilization circuit and/or an enable circuit. A ready-signal generation circuit provides a ready signal indicating that a voltage supply is at an operating voltage. The ready-signal generation circuit can include unbalanced transistors.Type: GrantFiled: August 17, 2005Date of Patent: August 11, 2009Assignee: Analog Devices, Inc.Inventors: Brian David Johansson, Stuart Patterson