Patents by Inventor Dewitt Clinton Seward, IV
Dewitt Clinton Seward, IV 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: 11323239Abstract: A system and method for determining whether a cryptographic system is being observed for power consumption analysis in an attempt to decipher secret keys. The system comprises a first external connection to receive an input voltage, an internal voltage regulator with an external capacitor to produce the desired voltage for the cryptographic system. The internal voltage regulator typically includes a switch that passes current from the first external connection to the external capacitor. By monitoring the frequency at which the switch is activated, it is possible to detect that an external voltage is being applied to the external capacitor. This external voltage is typically used to perform SPA or DPA operations. Thus, the cryptographic system may cease performing any encryption or decryption operations if an external voltage is detected.Type: GrantFiled: August 20, 2020Date of Patent: May 3, 2022Assignee: Silicon Laboratories Inc.Inventor: Dewitt Clinton Seward, IV
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Patent number: 11012898Abstract: A system and method of allowing a new device to join an existing network are disclosed. A configuration tool is used to communicate relevant information from the new network device to the gateway in the existing network using a secondary network protocol different from that used by the primary network. For example, in one embodiment, messages are exchanged between the configuration tool and the new device and between the configuration tool and the gateway using BLUETOOTH®. Once all of the pertinent information has been exchanged, the new device is able to securely join the primary network, which may be based on the IEEE802.15.4 standard.Type: GrantFiled: October 27, 2016Date of Patent: May 18, 2021Assignee: Silicon Laboratories, Inc.Inventors: Wing Ming Cheung, DeWitt Clinton Seward, IV, Gregory Allan Hodgson, Rasmus Christian Larsen, Bernt Georg Breivik
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Publication number: 20200382272Abstract: A system and method for determining whether a cryptographic system is being observed for power consumption analysis in an attempt to decipher secret keys. The system comprises a first external connection to receive an input voltage, an internal voltage regulator with an external capacitor to produce the desired voltage for the cryptographic system. The internal voltage regulator typically includes a switch that passes current from the first external connection to the external capacitor. By monitoring the frequency at which the switch is activated, it is possible to detect that an external voltage is being applied to the external capacitor. This external voltage is typically used to perform SPA or DPA operations. Thus, the cryptographic system may cease performing any encryption or decryption operations if an external voltage is detected.Type: ApplicationFiled: August 20, 2020Publication date: December 3, 2020Inventor: DeWitt Clinton Seward, IV
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Patent number: 10771942Abstract: A system and method of allowing a network device to receive a customized version of a reference design is disclosed. In one embodiment, many values that may be subject to customization are no longer fixed by the reference design. Rather, the reference design utilizes rewritable non-volatile memory to store a set of customization values that can be changed, based on a customer's preference. The system also includes a configuration tool, which interfaces with the network device. Using vendor-unique commands, the configuration tool is able to initialize this set of customization values to the values requested by the customer. In operation, the reference design is downloaded into the network device. The configuration tool is then used to establish the customized parameters for a particular customer. This process allows the manufacturer to create one reference design, which can be customized without the need to modify the code or recompile the source code.Type: GrantFiled: November 1, 2018Date of Patent: September 8, 2020Assignee: Silicon Laboratories, Inc.Inventors: DeWitt Clinton Seward, IV, Clayton Hollis Daigle, Gregory Allan Hodgson
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Publication number: 20200036509Abstract: A system and method for determining whether a cryptographic system is being observed for power consumption analysis in an attempt to decipher secret keys. The system comprises a first external connection to receive an input voltage, an internal voltage regulator with an external capacitor to produce the desired voltage for the cryptographic system. The internal voltage regulator typically includes a switch that passes current from the first external connection to the external capacitor. By monitoring the frequency at which the switch is activated, it is possible to detect that an external voltage is being applied to the external capacitor. This external voltage is typically used to perform SPA or DPA operations. Thus, the cryptographic system may cease performing any encryption or decryption operations if an external voltage is detected.Type: ApplicationFiled: July 25, 2018Publication date: January 30, 2020Inventor: DeWitt Clinton Seward, IV
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Patent number: 10396910Abstract: A system and method of allowing a network device to enter RF test mode without changing the software image or attaching cables to it is disclosed. In one embodiment, the software image loaded into the network device has the capability to execute in both normal operating mode and RF test mode. A command is issued by a RF test tool which instructs the network device to enter one of one or more different RF modes. In certain embodiments, the network device remains in this RF test mode for a predetermined period of time. In other embodiments, the network device remains in this RF test mode until the power is cycled.Type: GrantFiled: October 26, 2016Date of Patent: August 27, 2019Assignee: Silicon Laboratories, Inc.Inventors: DeWitt Clinton Seward, IV, Clayton Hollis Daigle
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Publication number: 20190069148Abstract: A system and method of allowing a network device to receive a customized version of a reference design is disclosed. In one embodiment, many values that may be subject to customization are no longer fixed by the reference design. Rather, the reference design utilizes rewritable non-volatile memory to store a set of customization values that can be changed, based on a customer's preference. The system also includes a configuration tool, which interfaces with the network device. Using vendor-unique commands, the configuration tool is able to initialize this set of customization values to the values requested by the customer. In operation, the reference design is downloaded into the network device. The configuration tool is then used to establish the customized parameters for a particular customer. This process allows the manufacturer to create one reference design, which can be customized without the need to modify the code or recompile the source code.Type: ApplicationFiled: November 1, 2018Publication date: February 28, 2019Inventors: DeWitt Clinton Seward, IV, Clayton Hollis Daigle, Gregory Allan Hodgson
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Patent number: 10154394Abstract: A system and method of allowing a network device to receive a customized version of a reference design is disclosed. In one embodiment, many values that may be subject to customization are no longer fixed by the reference design. Rather, the reference design utilizes rewritable non-volatile memory to store a set of customization values that can be changed, based on a customer's preference. The system also includes a configuration tool, which interfaces with the network device. Using vendor-unique commands, the configuration tool is able to initialize this set of customization values to the values requested by the customer. In operation, the reference design is downloaded into the network device. The configuration tool is then used to establish the customized parameters for a particular customer. This process allows the manufacturer to create one reference design, which can be customized without the need to modify the code or recompile the source code.Type: GrantFiled: October 26, 2016Date of Patent: December 11, 2018Assignee: Silicon Laboratories, Inc.Inventors: DeWitt Clinton Seward, IV, Clayton Hollis Daigle, Gregory Allan Hodgson
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Publication number: 20180199246Abstract: A system and method of allowing a new device to join an existing network are disclosed. A configuration tool is used to communicate relevant information from the new network device to the gateway in the existing network using a secondary network protocol different from that used by the primary network. For example, in one embodiment, messages are exchanged between the configuration tool and the new device and between the configuration tool and the gateway using BLUETOOTH®. Once all of the pertinent information has been exchanged, the new device is able to securely join the primary network, which may be based on the IEEE802.15.4 standard.Type: ApplicationFiled: October 27, 2016Publication date: July 12, 2018Inventors: Wing Ming Cheung, DeWitt Clinton Seward, IV, Gregory Allan Hodgson, Rasmus Christian Larsen, Bernt Georg Breivik
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Publication number: 20180115372Abstract: A system and method of allowing a network device to enter RF test mode without changing the software image or attaching cables to it is disclosed. In one embodiment, the software image loaded into the network device has the capability to execute in both normal operating mode and RF test mode. A command is issued by a RF test tool which instructs the network device to enter one of one or more different RF modes. In certain embodiments, the network device remains in this RF test mode for a predetermined period of time. In other embodiments, the network device remains in this RF test mode until the power is cycled.Type: ApplicationFiled: October 26, 2016Publication date: April 26, 2018Inventors: DeWitt Clinton Seward, IV, Clayton Hollis Daigle
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Publication number: 20180115856Abstract: A system and method of allowing a network device to receive a customized version of a reference design is disclosed. In one embodiment, many values that may be subject to customization are no longer fixed by the reference design. Rather, the reference design utilizes rewritable non-volatile memory to store a set of customization values that can be changed, based on a customer's preference. The system also includes a configuration tool, which interfaces with the network device. Using vendor-unique commands, the configuration tool is able to initialize this set of customization values to the values requested by the customer. In operation, the reference design is downloaded into the network device. The configuration tool is then used to establish the customized parameters for a particular customer. This process allows the manufacturer to create one reference design, which can be customized without the need to modify the code or recompile the source code.Type: ApplicationFiled: October 26, 2016Publication date: April 26, 2018Inventors: DeWitt Clinton Seward, IV, Clayton Hollis Daigle, Gregory Allan Hodgson
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Patent number: 8000288Abstract: A method for monitoring a wireless network includes, at a device including a communication interface coupling the device to a wireless network, monitoring messages transmitted between the communication interface and the wireless network, and outputting monitoring data associated with the monitored messages from the device.Type: GrantFiled: March 22, 2010Date of Patent: August 16, 2011Assignee: Ember CorporationInventors: Andrew James Wheeler, Dewitt Clinton Seward, IV, Jonathan Everett Avey
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Patent number: 7782813Abstract: A method for monitoring a wireless network includes, at a device including a communication interface coupling the device to a wireless network, monitoring messages transmitted between the communication interface and the wireless network, and outputting monitoring data associated with the monitored messages from the device.Type: GrantFiled: February 22, 2005Date of Patent: August 24, 2010Assignee: Ember CorporationInventors: Andrew James Wheeler, Dewitt Clinton Seward, IV, Jonathan Everett Avey
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Publication number: 20100172265Abstract: A method for monitoring a wireless network includes, at a device including a communication interface coupling the device to a wireless network, monitoring messages transmitted between the communication interface and the wireless network, and outputting monitoring data associated with the monitored messages from the device.Type: ApplicationFiled: March 22, 2010Publication date: July 8, 2010Applicant: EMBER CORPORATIONInventors: Andrew James Wheeler, Dewitt Clinton Seward, IV, Jonathan Everett Avey