Patents by Inventor D. Matthew Landry
D. Matthew Landry 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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Publication number: 20180063656Abstract: A device includes a network interface to communicate with a communication network and a microphone to convert sounds into an electrical signal. The device further includes a processor coupled to the microphone and the network interface. The processor is configured to process the electrical signal to generate acoustic data based on the electrical signal and to provide the acoustic data to the network interface for transmission to a data storage device.Type: ApplicationFiled: August 8, 2017Publication date: March 1, 2018Inventors: Frederick Charles Neumeyer, D. Matthew Landry, Samir Ibrahim, John Michael Page Knox, John Gray Bartkowiak
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Patent number: 9231402Abstract: A circuit device includes a diode bridge having a first power input and a second power input and having a first output terminal and a second output terminal. The diode bridge includes a plurality of diodes and a respective plurality of diode bypass elements associated with the plurality of diodes. The circuit device further includes a logic circuit to detect a power event at the first and second power inputs and to selectively activate one or more of the respective plurality of diode bypass elements in response to detecting the power event to limit a rectified power supply at the first and second output terminals.Type: GrantFiled: December 26, 2007Date of Patent: January 5, 2016Assignee: Silicon Laboratories Inc.Inventor: D. Matthew Landry
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Patent number: 8716886Abstract: In a particular embodiment, a power sourcing equipment (PSE) device includes at least one network port adapted to couple to a powered device to provide power and optionally data to the powered device via a network cable. The PSE device further includes a current limiter circuit coupled to the at least one network port and having an adjustable threshold. The PSE device also includes a logic circuit coupled to the current limiter circuit and adapted to reduce the adjustable threshold of the current limiter circuit to have a threshold level that is below a nominal operating current level. After a period of time has elapsed during which the current limiter circuit is not activated, the logic circuit is adapted to determine that the powered device is disconnected from the at least one network port.Type: GrantFiled: September 26, 2008Date of Patent: May 6, 2014Assignee: Silicon Laboratories Inc.Inventors: D. Matthew Landry, John Gammel
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Patent number: 8375231Abstract: A method is disclosed that includes receiving a classification voltage at a powered device from a network. The classification voltage includes a baseline voltage level that is below an operating voltage range of the powered device and includes a sequence of distinct signal elements derived from the classification voltage. The method further includes detecting a number of signal elements of the sequence of distinct signal elements. A current is drawn until the number of signal elements exceeds a predetermined number.Type: GrantFiled: July 28, 2010Date of Patent: February 12, 2013Assignee: Silison Laboratories Inc.Inventors: D. Matthew Landry, Russell J. Apfel
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Patent number: 8261104Abstract: A method is disclosed that includes receiving a classification voltage at a powered device from a network. The classification voltage includes a baseline voltage level that is below an operating voltage range of the powered device and includes a sequence of distinct signal elements derived from the classification voltage. The method further includes detecting a number of signal elements of the sequence of distinct signal elements. A current is drawn until the number of signal elements exceeds a predetermined number.Type: GrantFiled: November 30, 2009Date of Patent: September 4, 2012Assignee: Silicon Laboratories Inc.Inventors: D. Matthew Landry, Russell J. Apfel
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Publication number: 20110254619Abstract: In a particular embodiment, a method includes receiving a powered device (PD) detection signal at a PD from a powered network and applying the PD detection signal to an external resistor to provide a detection signature to the powered network. Further, the method includes receiving a PD classification mark signal at the PD, applying the received PD classification mark signal to the external resistor, and selectively activating a classification mark current path in parallel with the external resistor to produce a classification mark signature.Type: ApplicationFiled: June 30, 2011Publication date: October 20, 2011Inventors: Alejandro Velez, D. Matthew Landry
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Patent number: 7979168Abstract: In a particular embodiment, a method includes receiving a powered device (PD) detection signal at a PD from a powered network and applying the PD detection signal to an external resistor to provide a detection signature to the powered network. Further, the method includes receiving a PD classification mark signal at the PD, applying the received PD classification mark signal to the external resistor, and selectively activating a classification mark current path in parallel with the external resistor to produce a classification mark signature.Type: GrantFiled: September 11, 2008Date of Patent: July 12, 2011Assignee: Silicon Laboratories Inc.Inventors: Alejandro Velez, D. Matthew Landry
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Patent number: 7855445Abstract: In a particular embodiment, a circuit device includes a first die coupled to a circuit substrate and having a substantially planar surface. The first die includes electrical contacts distributed on the substantially planar surface adjacent to at least three edges of the first die. The circuit device further includes a second die attached to the substantially planar surface of the first die. The second die is rotated by an offset angle about an axis relative to the first die. The offset angle is selected to allow horizontal and vertical access to the electrical contacts.Type: GrantFiled: April 29, 2008Date of Patent: December 21, 2010Assignee: Silicon Laboratories, Inc.Inventors: D. Matthew Landry, Richard Webb
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Publication number: 20100293399Abstract: A method is disclosed that includes receiving a classification voltage at a powered device from a network. The classification voltage includes a baseline voltage level that is below an operating voltage range of the powered device and includes a sequence of distinct signal elements derived from the classification voltage. The method further includes detecting a number of signal elements of the sequence of distinct signal elements. A current is drawn until the number of signal elements exceeds a predetermined number.Type: ApplicationFiled: July 28, 2010Publication date: November 18, 2010Applicant: SILICON LABORATORIES INC.Inventors: D. Matthew Landry, Russell J. Apfel
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Patent number: 7804859Abstract: In a particular embodiment, a system includes an input/output (I/O) interface adapted to couple to a network cable to receive power and data and includes a physical transport layer (PHY) circuit including multiple channels coupled to the I/O interface. The PHY circuit is adapted to send data to and receive data from a network device via the multiple channels. The system further includes a multiplexer circuit coupled to the PHY circuit to multiplex data from the multiple channels into a multiplexed data stream and includes an isolation barrier circuit coupled to the multiplexer circuit and to a particular circuit. The isolation barrier is adapted to electrically isolate a particular circuit from the multiplexer circuit, the PHY circuit, and the I/O interface.Type: GrantFiled: June 30, 2008Date of Patent: September 28, 2010Assignee: Silicon Laboratories, Inc.Inventors: D. Matthew Landry, Phillip A. Callahan
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Patent number: 7793124Abstract: A power sourcing equipment (PSE) device is disclosed that includes an interface adapted to communicate with a powered device via wire pairs of a cable, a power supply circuit adapted to provide power to the interface, and device detection logic to detect the powered device coupled to the interface. The PSE device further includes power classification logic coupled to the interface and adapted to provide a power classification signal to the powered device. The power classification signal includes a first power classification signal and a second power classification signal to identify a power classification associated with the powered device. The power classification logic monitors the interface to detect a device classification response from the powered device and determines the power classification associated with the powered device based on the device classification response.Type: GrantFiled: December 31, 2007Date of Patent: September 7, 2010Assignee: Silicon Laboratories, Inc.Inventors: D. Matthew Landry, Russell J. Apfel
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Patent number: 7715165Abstract: A powered device includes a first supply terminal, a second supply terminal, and at least one input pin coupled to the first supply terminal. The powered device further includes an external capacitor having a first terminal coupled to the first supply terminal, a switch coupled to the second supply terminal and coupled to a second terminal of the external capacitor, and power surge detection logic coupled to the switch. The external capacitor is charged in response to a detected power surge that exceeds a threshold.Type: GrantFiled: July 11, 2006Date of Patent: May 11, 2010Assignee: Silicon Laboratories, Inc.Inventors: John Gammel, Richard B. Webb, D. Matthew Landry
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Publication number: 20100078992Abstract: In a particular embodiment, a power sourcing equipment (PSE) device includes at least one network port adapted to couple to a powered device to provide power and optionally data to the powered device via a network cable. The PSE device further includes a current limiter circuit coupled to the at least one network port and having an adjustable threshold. The PSE device also includes a logic circuit coupled to the current limiter circuit and adapted to reduce the adjustable threshold of the current limiter circuit to have a threshold level that is below a nominal operating current level. After a period of time has elapsed during which the current limiter circuit is not activated, the logic circuit is adapted to determine that the powered device is disconnected from the at least one network port.Type: ApplicationFiled: September 26, 2008Publication date: April 1, 2010Applicant: Silicon Laboratories, Inc.Inventors: D. Matthew Landry, John Gammel
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Publication number: 20100077245Abstract: A method is disclosed that includes receiving a classification voltage at a powered device from a network. The classification voltage includes a baseline voltage level that is below an operating voltage range of the powered device and includes a sequence of distinct signal elements derived from the classification voltage. The method further includes detecting a number of signal elements of the sequence of distinct signal elements. A current is drawn until the number of signal elements exceeds a predetermined number.Type: ApplicationFiled: November 30, 2009Publication date: March 25, 2010Applicant: SILICON LABORATORIES INC.Inventors: D. Matthew Landry, Russell J. Apfel
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Patent number: 7647510Abstract: A method is disclosed that includes receiving a classification voltage at a powered device from a network. The classification voltage includes a baseline voltage level that is below an operating voltage range of the powered device and includes a sequence of distinct signal elements derived from the classification voltage. The method further includes detecting a number of signal elements of the sequence of distinct signal elements. A current is drawn until the number of signal elements exceeds a predetermined number.Type: GrantFiled: June 22, 2006Date of Patent: January 12, 2010Assignee: Silicon Laboratories, Inc.Inventors: D. Matthew Landry, Russell J. Apfel
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Publication number: 20090323717Abstract: In a particular embodiment, a system includes an input/output (I/O) interface adapted to couple to a network cable to receive power and data and includes a physical transport layer (PHY) circuit including multiple channels coupled to the I/O interface. The PHY circuit is adapted to send data to and receive data from a network device via the multiple channels. The system further includes a multiplexer circuit coupled to the PHY circuit to multiplex data from the multiple channels into a multiplexed data stream and includes an isolation barrier circuit coupled to the multiplexer circuit and to a particular circuit. The isolation barrier is adapted to electrically isolate a particular circuit from the multiplexer circuit, the PHY circuit, and the I/O interface.Type: ApplicationFiled: June 30, 2008Publication date: December 31, 2009Applicant: Silicon Laboratories Inc.Inventors: D. Matthew Landry, Phillip A. Callahan
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Publication number: 20090327558Abstract: In a particular embodiment, a power sourcing equipment (PSE) device is disclosed that includes a plurality of network input/output (I/O) interfaces adapted to physically and electrically connect to a respective plurality of cables. The PSE device further includes a plurality of driver circuits. Each driver circuit of the plurality of driver circuits is coupled to a respective network I/O interface of the plurality of network I/O interfaces to send and receive data via a respective cable of the respective plurality of cables. Further, the PSE device includes a shared isolation barrier to electrically isolate control circuitry from the plurality of driver circuits.Type: ApplicationFiled: June 30, 2008Publication date: December 31, 2009Applicant: SILICON LABORATORIES INC.Inventors: D. Matthew Landry, Phillip A. Callahan
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Publication number: 20090267224Abstract: In a particular embodiment, a circuit device includes a first die coupled to a circuit substrate and having a substantially planar surface. The first die includes electrical contacts distributed on the substantially planar surface adjacent to at least three edges of the first die. The circuit device further includes a second die attached to the substantially planar surface of the first die. The second die is rotated by an offset angle about an axis relative to the first die. The offset angle is selected to allow horizontal and vertical access to the electrical contacts.Type: ApplicationFiled: April 29, 2008Publication date: October 29, 2009Applicant: Silicon Laboratories Inc.Inventors: D. Matthew Landry, Richard Bruce Webb
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Publication number: 20090172656Abstract: In a particular embodiment, a circuit device includes a plurality of network ports, power regulator circuitry coupled to the plurality of network ports, and a control input adapted to receive software updates. The circuit device further includes a memory adapted to store a plurality of instructions, including processor operating system instructions and an upgrade routine. The circuit device further includes a programmable processor that is coupled to the memory and to the control input. The programmable processor is adapted to receive software updates via the control input and to execute the upgrade routine to upgrade the processor operating system instructions to reprogram the programmable processor. Further, the programmable processor is adapted to control the power regulator circuitry to selectively provide a power supply to a network device via a selected network port of the plurality of network ports.Type: ApplicationFiled: December 31, 2007Publication date: July 2, 2009Applicant: Silicon Laboratories Inc.Inventors: D. Matthew Landry, Phillip A. Callahan
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Publication number: 20090168278Abstract: A circuit device includes a diode bridge having a first power input and a second power input and having a first output terminal and a second output terminal. The diode bridge includes a plurality of diodes and a respective plurality of diode bypass elements associated with the plurality of diodes. The circuit device further includes a logic circuit to detect a power event at the first and second power inputs and to selectively activate one or more of the respective plurality of diode bypass elements in response to detecting the power event to limit a rectified power supply at the first and second output terminals.Type: ApplicationFiled: December 26, 2007Publication date: July 2, 2009Applicant: Silicon Laboratories Inc.Inventor: D. Matthew Landry