Patents by Inventor Hariharasudhan VIGNESWARAN
Hariharasudhan VIGNESWARAN 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: 12386013Abstract: A method for detecting anomalies in a positioning system comprises receiving, for a plurality of locator devices (ANC1, ANC2, ANC3, ANC4), respective location indicators associated with at least one mobile device (TG1, TG2, TG3), determining a position of the at least one mobile device (TG1, TG2, TG3) based on the received location indicators, acquiring, for at least one of the location indicators received, a confidence indicator associated with the at least one of the location indicators, determining, for each acquired confidence indicator, whether a confidence criterion is met, and storing an anomaly indicator in an anomaly cache, if the confidence criterion is not met, wherein each anomaly indicator is associated with the locator device, for which the location indicator is received; and generating an anomaly alert message for at least one of the locator devices based on an evaluation of the anomaly indicators that are stored for the at least one of the locator devices.Type: GrantFiled: November 16, 2022Date of Patent: August 12, 2025Assignee: u-blox AGInventors: Dimitris Kalogiros, Hariharasudhan Vigneswaran, Matthias Mahlig
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Publication number: 20240259991Abstract: A wireless mobile device in a group of wireless mobile devices, configured for wireless communication with a locator device and one or more neighbor wireless mobile devices in the group, configured to obtain a neighbor information list comprising positioning information relative to the neighbor wireless mobile devices, and broadcast a location data message comprising an identity of the wireless mobile device, the neighbor information list and a message authentication code. A locator device, configured for wireless communication with a group of wireless mobile devices and for locating a target wireless mobile device in the group, configured to determine that the target wireless mobile device is not in wireless communication with the locator device, and search for the target wireless mobile device based on the neighbor information lists in the location data messages received from the wireless mobile devices in the group until positioning information of the target wireless mobile device is found.Type: ApplicationFiled: January 25, 2024Publication date: August 1, 2024Inventors: Davide Lenzarini, Peter Karlsson, Bruce Jackson, Hariharasudhan Vigneswaran
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Publication number: 20240004020Abstract: A method for position estimation in a positioning system includes receiving, by a locator devices, positioning signals from a mobile device, generating positioning information with associated synchronization identifiers based on the respective received positioning signals, and providing the positioning information with the associated synchronization identifiers to a positioning engine. The positioning engine compiles a set of related positioning information selected from the provided positioning information based on a similarity measure of the associated synchronization identifiers, and determines an estimated position of the mobile device based on the set of related positioning information.Type: ApplicationFiled: June 23, 2023Publication date: January 4, 2024Inventors: Farshid Rezaei, Hariharasudhan Vigneswaran, Jakob Krantz, Matthias Mahlig
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Patent number: 11863535Abstract: A system and a method for secure communications over a network, the method comprising: receiving a data packet from a first device, the data packet comprising an encrypted data part and a metadata part, the metadata part comprising a cleartext part and removable metadata, the removable metadata comprising a network access code that is authenticatable by means of a network access key; validating the data packet, wherein validating the data packet comprises authenticating the network access code using the network access key; removing the removable metadata from the data packet after validating the data packet, thereby altering the data packet; and transmitting the altered data packet to a second device. The system comprises a first, a second, and a third device. The third device may comprise a receiver and a transmitter, and a validator that comprises a processor and a memory.Type: GrantFiled: December 21, 2020Date of Patent: January 2, 2024Assignee: u-blox AGInventor: Hariharasudhan Vigneswaran
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Publication number: 20230308868Abstract: The present disclosure relates to a method (60, 70) for performing key management for a plurality of communication devices, each of the plurality of communication devices being configured to perform wireless communication using a first wireless communication technology. The method comprises establishing (S60, S70, S62, S72)), by at least one of the plurality of communication devices, a first secure connection with a key management service using a second wireless communication technology. The method further comprises negotiating (S61, S71, S63, S73), by the at least one communication device with the key management service using the first secure connection, first authentication information comprising a first authentication bundle for secure communication and/or data protection on the first wireless communication technology.Type: ApplicationFiled: March 22, 2023Publication date: September 28, 2023Inventors: Peter Karlsson, Davide Lenzarini, Hariharasudhan Vigneswaran
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Publication number: 20230176167Abstract: A method for detecting anomalies in a positioning system comprises receiving, for a plurality of locator devices (ANC1, ANC2, ANC3, ANC4), respective location indicators associated with at least one mobile device (TG1, TG2, TG3), determining a position of the at least one mobile device (TG1, TG2, TG3) based on the received location indicators, acquiring, for at least one of the location indicators received, a confidence indicator associated with the at least one of the location indicators, determining, for each acquired confidence indicator, whether a confidence criterion is met, and storing an anomaly indicator in an anomaly cache, if the confidence criterion is not met, wherein each anomaly indicator is associated with the locator device, for which the location indicator is received; and generating an anomaly alert message for at least one of the locator devices based on an evaluation of the anomaly indicators that are stored for the at least one of the locator devices.Type: ApplicationFiled: November 16, 2022Publication date: June 8, 2023Inventors: Dimitris KALOGIROS, Hariharasudhan VIGNESWARAN, Matthias MAHLIG
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Patent number: 11575385Abstract: An electronic device includes: a first input node configured to receive a dock signal; a second input node configured to receive an activation signal or a deactivation signal; a filter circuit responsive to: (a) the activation signal to activate the filter circuit to block the dock signal; or (b) the deactivation signal to deactivate the filter circuit to pass the dock signal; and an output node configured for coupling to a synchronous I/O interface of an integrated circuit to control operation of the synchronous I/O interface.Type: GrantFiled: November 6, 2020Date of Patent: February 7, 2023Assignee: U-BLOX AGInventors: Aneeb Sohail, Hariharasudhan Vigneswaran
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Patent number: 11553351Abstract: A secure indoor positioning device, system and method. A mobile electronic device is detected entering into proximity of a stationary electronic device. In response, a plurality of secure session parameters is negotiated via two-way wireless communication between the stationary electronic device and the mobile electronic device. One or more of the negotiated plurality of secure session parameters is communicated to one or more other stationary electronic devices. At one or more of the plurality of stationary electronic devices, secure messages broadcasted by the mobile electronic device are received. These messages are decrypted or authenticated using one or more of the negotiated secure session parameters and are used to determine a position of the mobile electronic device.Type: GrantFiled: December 9, 2020Date of Patent: January 10, 2023Assignee: u-blox AGInventors: Hariharasudhan Vigneswaran, Peter Karlsson
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Publication number: 20220200971Abstract: A system and a method for secure communications over a network, the method comprising: receiving a data packet from a first device, the data packet comprising an encrypted data part and a metadata part, the metadata part comprising a cleartext part and removable metadata, the removable metadata comprising a network access code that is authenticatable by means of a network access key; validating the data packet, wherein validating the data packet comprises authenticating the network access code using the network access key; removing the removable metadata from the data packet after validating the data packet, thereby altering the data packet; and transmitting the altered data packet to a second device. The system comprises a first, a second, and a third device. The third device may comprise a receiver and a transmitter, and a validator that comprises a processor and a memory.Type: ApplicationFiled: December 21, 2020Publication date: June 23, 2022Inventor: Hariharasudhan VIGNESWARAN
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Publication number: 20220182839Abstract: A secure indoor positioning device, system and method. A mobile electronic device is detected entering into proximity of a stationary electronic device. In response, a plurality of secure session parameters is negotiated via two-way wireless communication between the stationary electronic device and the mobile electronic device. One or more of the negotiated plurality of secure session parameters is communicated to one or more other stationary electronic devices. At one or more of the plurality of stationary electronic devices, secure messages broadcasted by the mobile electronic device are received. These messages are decrypted or authenticated using one or more of the negotiated secure session parameters and are used to determine a position of the mobile electronic device.Type: ApplicationFiled: December 9, 2020Publication date: June 9, 2022Inventors: Hariharasudhan Vigneswaran, Peter Karlsson
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Publication number: 20220149850Abstract: An electronic device includes: a first input node configured to receive a dock signal; a second input node configured to receive an activation signal or a deactivation signal; a filter circuit responsive to: (a) the activation signal to activate the filter circuit to block the dock signal; or (b) the deactivation signal to deactivate the filter circuit to pass the dock signal; and an output node configured for coupling to a synchronous I/O interface of an integrated circuit to control operation of the synchronous I/O interface.Type: ApplicationFiled: November 6, 2020Publication date: May 12, 2022Inventors: Aneeb Sohail, Hariharasudhan Vigneswaran
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Publication number: 20210067956Abstract: Methods and apparatus for secure communication between first and second devices over a network, the method comprising transmitting a security message from the first device to the second device through a serial data stream using packet fragmentation; configuring a secure connection between the first and second devices over the network, the secure connection being based on the security message; and communicating data via the secure connection by at least one of transmitting data from the first device to the second device, or receiving data by the first device from the second device.Type: ApplicationFiled: August 30, 2019Publication date: March 4, 2021Inventors: Hariharasudhan VIGNESWARAN, Pelle BERGKVIST, Vilhelm ULLEN