Patents by Inventor Abhishek Ranjan

Abhishek Ranjan 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: 11516098
    Abstract: Systems, methods, and computer-readable media are provided for determining a packet's round trip time (RTT) in a network. A system can receive information of a packet sent by a component of the network and further determine an expected acknowledgement (ACK) sequence number associated with the packet based upon received information of the packet. The system can receive information of a subsequent packet received by the component and determine an ACK sequence number and a receiving time of the subsequent packet. In response to determining that the ACK sequence number of the subsequent TCP packet matches the expected ACK sequence number, the system can determine a round trip time (RTT) of the packet based upon the received information of the packet and the received information of the subsequent packet.
    Type: Grant
    Filed: April 22, 2021
    Date of Patent: November 29, 2022
    Assignee: Cisco Technology, Inc.
    Inventors: Mohammadreza Alizadeh Attar, Navindra Yadav, Abhishek Ranjan Singh, Vimalkumar Jeyakumar, Shashidhar Gandham, Roberto Fernando Spadaro
  • Patent number: 11502922
    Abstract: Systems, methods, and computer-readable media for managing compromised sensors in multi-tiered virtualized environments. In some embodiments, a system can receive, from a first capturing agent deployed in a virtualization layer of a first device, data reports generated based on traffic captured by the first capturing agent. The system can also receive, from a second capturing agent deployed in a hardware layer of a second device, data reports generated based on traffic captured by the second capturing agent. Based on the data reports, the system can determine characteristics of the traffic captured by the first capturing agent and the second capturing agent. The system can then compare the characteristics to determine a multi-layer difference in traffic characteristics. Based on the multi-layer difference in traffic characteristics, the system can determine that the first capturing agent or the second capturing agent is in a faulty state.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: November 15, 2022
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Navindra Yadav, Abhishek Ranjan Singh, Anubhav Gupta, Shashidhar Gandham, Jackson Ngoc Ki Pang, Shih-Chun Chang, Hai Trong Vu
  • Patent number: 11477097
    Abstract: Systems, methods, and computer-readable media for hierarchichal sharding of flows from sensors to collectors. A first collector can receive a first portion of a network flow from a first capturing agent and determine that a second portion of the network flow was not received from the first capturing agent. The first collector can then send the first portion of the network flow to a second collector. A third collector can receive the second portion of the network flow from a second capturing agent and determine that the third collector did not receive the first portion of the network flow. The third collector can then send the second portion of the network flow to the second collector. The second collector can then aggregate the first portion and second portion of the network flow to yield the entire portion of the network flow.
    Type: Grant
    Filed: July 15, 2020
    Date of Patent: October 18, 2022
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Shashidhar Gandham, Rohit Chandra Prasad, Abhishek Ranjan Singh, Navindra Yadav, Khawar Deen, Varun Sagar Malhotra
  • Publication number: 20220321836
    Abstract: A method is disclosed for representing an obscured area of a mobile platform environment relative to an object area of a first and second imaging devices of the mobile platform, including determining a delta-area, being the difference of a second obscured area of the environment which is obscured in respect to the object area at a second time step, and a first obscured area of the environment which is obscured in respect to the object area at a first time step. First and second overlap-images, being an overlap of an image of the first imaging device respectively of an image of the second imaging device with the delta-area, are determined, wherein both images are taken at the first time step. A difference of an optical property of the images is determined, and the difference of the optical property is harmonized within at least one of the overlap-images.
    Type: Application
    Filed: May 20, 2020
    Publication date: October 6, 2022
    Applicant: Continental Automotive GmbH
    Inventors: Markus Friebe, Chetan Gotur, Pavan Nag Prabhakar, Abhishek Ranjan
  • Patent number: 11451536
    Abstract: Described are various embodiments of a system for monitoring a physical user presence during an authenticated user access session at an access point. In one embodiment, the system comprises a wireless digital user authentication device (UAD) operable to wirelessly establish the authenticated user access session, periodically communicate an authenticated presence code to actively maintain the session and acquire motion-related data during the session to capture a UAD departure motion representative of the user departing from the access point. The system further comprises a digital application operatively associated with the access point and operable to wirelessly establish the session with the UAD upon arrival at the access point, and periodically receive the authenticated presence code to maintain the authenticated user access session. The authenticated user session is terminated upon identifying the UAD departure motion from said the motion-related data.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: September 20, 2022
    Assignee: NYMI INC.
    Inventors: Stuart Keith MacLean, Abhishek Ranjan
  • Patent number: 11431592
    Abstract: A method includes capturing first data associated with a first packet flow originating from a first host using a first capture agent deployed at the first host to yield first flow data, capturing second data associated with a second packet flow originating from the first host from a second capture agent deployed on a second host to yield second flow data and comparing the first flow data and the second flow data to yield a difference. When the difference is above a threshold value, the method includes determining that the second packet flow was transmitted by a component that bypassed an operating stack of the first host or a packet capture agent at the device to yield a determination, detecting that hidden network traffic exists, and predicting a malware issue with the first host based on the determination.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: August 30, 2022
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Khawar Deen, Navindra Yadav, Anubhav Gupta, Shashidhar Gandham, Rohit Chandra Prasad, Abhishek Ranjan Singh, Shih-Chun Chang
  • Publication number: 20220229895
    Abstract: Described are various embodiments of a digital user authentication device to authenticate an authorized user. The device comprises a wearable user authentication interface operable to receive unique user identification data and a finger physiological signal; an onbody physiological sensor operable to simultaneously acquire a distinct onbody physiological signal; and a digital data processor operable to execute a user authentication process based on the unique user identification data while confirming a user presence based on the finger physiological signal, and further digitally compare the finger physiological signal and the distinct onbody physiological signal to automatically confirm that they match within a designated level of confidence so to confirm that they were both acquired from a same user.
    Type: Application
    Filed: May 6, 2020
    Publication date: July 21, 2022
    Inventors: Abhishek RANJAN, Avrum Douglas HOLLINGER, Masoud HOSSEINI, Shahin ETEMADZADEH, Stephen OUNG
  • Patent number: 11368378
    Abstract: Systems, methods, and computer-readable media for identifying bogon addresses. A system can obtain an indication of address spaces in a network. The indication can be based on route advertisements transmitted by routers associated with the network. The system can receive a report generated by a capturing agent deployed on a host. The report can identify a flow captured by the capturing agent at the host. The system can identify a network address associated with the flow and, based on the indication of address spaces, the system can determine whether the network address is within the address spaces in the network. When the network address is not within the address spaces in the network, the system can determine that the network address is a bogon address. When the network address is within the address spaces in the network, the system can determine that the network address is not a bogon address.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: June 21, 2022
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Shashidhar Gandham, Rohit Chandra Prasad, Abhishek Ranjan Singh, Navindra Yadav, Khawar Deen, Varun Sagar Malhotra
  • Publication number: 20220141103
    Abstract: Systems, methods, and computer-readable media for identifying bogon addresses. A system can obtain an indication of address spaces in a network. The indication can be based on route advertisements transmitted by routers associated with the network. The system can receive a report generated by a capturing agent deployed on a host. The report can identify a flow captured by the capturing agent at the host. The system can identify a network address associated with the flow and, based on the indication of address spaces, the system can determine whether the network address is within the address spaces in the network. When the network address is not within the address spaces in the network, the system can determine that the network address is a bogon address. When the network address is within the address spaces in the network, the system can determine that the network address is not a bogon address.
    Type: Application
    Filed: January 18, 2022
    Publication date: May 5, 2022
    Inventors: Shashidhar Gandham, Rohit Chandra Prasad, Abhishek Ranjan Singh, Navindra Yadav, Khawar Deen, Varun Sagar Malhotra
  • Publication number: 20220131773
    Abstract: A network analytics system can receive first sensor data, including first network activity and a first timestamp associated with a first clock of a first node, and second sensor data, including second network activity and a second timestamp associated with a second clock of a second node. The system can determine a first delta between the first clock and a third clock based on the first timestamp, and a second delta between the second clock and the third clock. The system can determine a first communication latency associated with a first sensor of the first node, and a second communication latency associated with a second sensor of the second node. The system can generate a report that synchronizes one or more data flows between the first node and the second node based on the first delta, the second delta, the first communication latency, and the second communication latency.
    Type: Application
    Filed: January 6, 2022
    Publication date: April 28, 2022
    Inventors: Khawar Deen, Navindra Yadav, Anubhav Gupta, Shashidhar Gandham, Rohit Chandra Prasad, Abhishek Ranjan Singh, Shih-Chun Chang
  • Patent number: 11252060
    Abstract: A network analytics system can receive first sensor data, including first network activity and a first timestamp associated with a first clock of a first node, and second sensor data, including second network activity and a second timestamp associated with a second clock of a second node. The system can determine a first delta between the first clock and a third clock based on the first timestamp, and a second delta between the second clock and the third clock. The system can determine a first communication latency associated with a first sensor of the first node, and a second communication latency associated with a second sensor of the second node. The system can generate a report that synchronizes one or more data flows between the first node and the second node based on the first delta, the second delta, the first communication latency, and the second communication latency.
    Type: Grant
    Filed: January 13, 2020
    Date of Patent: February 15, 2022
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Khawar Deen, Navindra Yadav, Anubhav Gupta, Shashidhar Gandham, Rohit Chandra Prasad, Abhishek Ranjan Singh, Shih-Chun Chang
  • Publication number: 20220038353
    Abstract: Systems, methods, and computer-readable media for annotating process and user information for network flows. In some embodiments, a capturing agent, executing on a first device in a network, can monitor a network flow associated with the first device. The first device can be, for example, a virtual machine, a hypervisor, a server, or a network device. Next, the capturing agent can generate a control flow based on the network flow. The control flow may include metadata that describes the network flow. The capturing agent can then determine which process executing on the first device is associated with the network flow and label the control flow with this information. Finally, the capturing agent can transmit the labeled control flow to a second device, such as a collector, in the network.
    Type: Application
    Filed: October 15, 2021
    Publication date: February 3, 2022
    Inventors: Navindra Yadav, Abhishek Ranjan Singh, Anubhav Gupta, Shashidhar Gandham, Jackson Ngoc Ki Pang, Shih-Chun Chang, Hai Trong Vu
  • Publication number: 20210392059
    Abstract: Systems, methods, and computer-readable media for updating configurations in sensors deployed in multi-layer virtualized environments. In some examples, a system can track information of sensors and collectors in the network. In response to determining that a specific collector becomes unavailable (e.g., the specific collector is down, offline or becomes unsupported), the system can determine affected sensors corresponding to the specific collector, determine a new collector among active collectors of the network for each of the affected sensors, and dynamically update configuration and settings of the affected sensors to maintain proper collector-to-sensor mappings and other settings on the affected sensors.
    Type: Application
    Filed: August 26, 2021
    Publication date: December 16, 2021
    Inventors: Navindra Yadav, Abhishek Ranjan Singh, Anubhav Gupta, Shashidhar Gandham, Jackson Ngoc Ki Pang, Shih-Chun Chang, Hai Trong Vu
  • Publication number: 20210358251
    Abstract: Described are various embodiments of a user activity-related monitoring system and method, and a user access authorization system and method employing same. In one embodiment, a system is provided for authenticating a user authorised to perform a designated activity in a designated environment. The system comprises a wireless digital user authentication device (UAD) operable to: wirelessly establish an authenticated access session at an access point within the designated environment for performing the designated activity; and acquire activity-related data during performance of the designated activity. The system further comprises a digital application operatively associated with the wireless digital UAD and operable to: digitally compare and evaluate compliance of the activity-related data with a digital authenticated activity template within a designated tolerance.
    Type: Application
    Filed: May 14, 2020
    Publication date: November 18, 2021
    Inventors: Stuart Keith MACLEAN, Abhishek RANJAN
  • Publication number: 20210326931
    Abstract: A digital advertising system includes an advertisements module that provides a number of digital advertisements for display on a digital display device. A digital sign module including the digital display device displays digital advertisements provided by the advertisements module, and captures video analytics data relating to previous viewers of the digital advertisements displayed by the digital sign module. A data mining module retrieves the video analytics data from the digital sign module and generates trained advertising models based thereon using a data mining algorithm. A content management system module coupled to the advertisements module and the data mining module receives the digital advertisements and the trained advertising models and generates a subset of the advertisements for display based on the trained advertising models.
    Type: Application
    Filed: April 5, 2021
    Publication date: October 21, 2021
    Inventors: Andrew J. Kuzma, Bradut Vrabete, Addicam V. Sanjay, Shahzad A. Malik, Abhishek Ranjan, Shweta Phadnis, Fengzhan Tian, Kunapareddy Chiranjeevi
  • Patent number: 11153184
    Abstract: Systems, methods, and computer-readable media for annotating process and user information for network flows. In some embodiments, a capturing agent, executing on a first device in a network, can monitor a network flow associated with the first device. The first device can be, for example, a virtual machine, a hypervisor, a server, or a network device. Next, the capturing agent can generate a control flow based on the network flow. The control flow may include metadata that describes the network flow. The capturing agent can then determine which process executing on the first device is associated with the network flow and label the control flow with this information. Finally, the capturing agent can transmit the labeled control flow to a second device, such as a collector, in the network.
    Type: Grant
    Filed: December 31, 2018
    Date of Patent: October 19, 2021
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Navindra Yadav, Abhishek Ranjan Singh, Anubhav Gupta, Shashidhar Gandham, Jackson Ngoc Ki Pang, Shih-Chun Chang, Hai Trong Vu
  • Patent number: 11128552
    Abstract: Systems, methods, and computer-readable media are provided for determining a packet's round trip time (RTT) in a network. A system can receive information of a packet sent by a component of the network and further determine an expected acknowledgement (ACK) sequence number associated with the packet based upon received information of the packet. The system can receive information of a subsequent packet received by the component and determine an ACK sequence number and a receiving time of the subsequent packet. In response to determining that the ACK sequence number of the subsequent TCP packet matches the expected ACK sequence number, the system can determine a round trip time (RTT) of the packet based upon the received information of the packet and the received information of the subsequent packet.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: September 21, 2021
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Mohammadreza Alizadeh Attar, Navindra Yadav, Abhishek Ranjan Singh, Vimalkumar Jeyakumar, Shashidhar Gandham, Roberto Fernando Spadaro
  • Patent number: 11121948
    Abstract: Systems, methods, and computer-readable media for updating configurations in sensors deployed in multi-layer virtualized environments. In some examples, a system can track information of sensors and collectors in the network. In response to determining that a specific collector becomes unavailable (e.g., the specific collector is down, offline or becomes unsupported), the system can determine affected sensors corresponding to the specific collector, determine a new collector among active collectors of the network for each of the affected sensors, and dynamically update configuration and settings of the affected sensors to maintain proper collector-to-sensor mappings and other settings on the affected sensors.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: September 14, 2021
    Assignee: Cisco Technology, Inc.
    Inventors: Navindra Yadav, Abhishek Ranjan Singh, Anubhav Gupta, Shashidhar Gandham, Jackson Ngoc Ki Pang, Shih-Chun Chang, Hai Trong Vu
  • Publication number: 20210243093
    Abstract: Systems, methods, and computer-readable media are provided for determining a packet's round trip time (RTT) in a network. A system can receive information of a packet sent by a component of the network and further determine an expected acknowledgement (ACK) sequence number associated with the packet based upon received information of the packet. The system can receive information of a subsequent packet received by the component and determine an ACK sequence number and a receiving time of the subsequent packet. In response to determining that the ACK sequence number of the subsequent TCP packet matches the expected ACK sequence number, the system can determine a round trip time (RTT) of the packet based upon the received information of the packet and the received information of the subsequent packet.
    Type: Application
    Filed: April 22, 2021
    Publication date: August 5, 2021
    Inventors: Mohammadreza Alizadeh Attar, Navindra Yadav, Abhishek Ranjan Singh, Vimalkumar Jeyakumar, Shashidhar Gandham, Roberto Fernando Spadaro
  • Publication number: 20210160157
    Abstract: Systems, methods, and computer-readable media for annotating process and user information for network flows. In some embodiments, a capturing agent, executing on a first device in a network, can monitor a network flow associated with the first device. The first device can be, for example, a virtual machine, a hypervisor, a server, or a network device. Next, the capturing agent can generate a control flow based on the network flow. The control flow may include metadata that describes the network flow. The capturing agent can then determine which process executing on the first device is associated with the network flow and label the control flow with this information. Finally, the capturing agent can transmit the labeled control flow to a second device, such as a collector, in the network.
    Type: Application
    Filed: January 29, 2021
    Publication date: May 27, 2021
    Inventors: Navindra Yadav, Abhishek Ranjan Singh, Anubhav Gupta, Shashidhar Gandham, Jackson Ngoc Ki Pang, Shih-Chun Chang, Hai Trong Vu