Patents by Inventor Souvik Das

Souvik Das 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).

  • Publication number: 20260112911
    Abstract: A system for dissipating energy stored in a battery system includes a direct current (DC)-DC converter, an active front end (AFE), and a controller including one or more memories and one or more processors. The one or more processors are configured to determine a current state of charge (SOC) of the battery system; retrieve, from the one or more memories, the minimum energy value to be maintained in the battery system; compare the current SOC of the battery system with the minimum energy value; and dissipate the energy stored in the battery system if the current SOC is greater than the minimum energy value through the DC-DC converter, the AFE, both of the DC-DC converter and the AFE, and/or both of a first semiconductor device of the DC-DC converter and a second semiconductor device of the AFE.
    Type: Application
    Filed: October 22, 2024
    Publication date: April 23, 2026
    Applicant: Caterpillar Inc.
    Inventors: Karthikeyan Kottaisamy, Souvik Das, Malay Bhunia, Umesh BS, Aravinth Manivannan
  • Publication number: 20260018905
    Abstract: A method of operating a battery charging circuit for charging a battery is described. The method includes controlling the battery charging circuit to operate in a first mode to output a direct current (DC) current at a first voltage less than or equal to a predefined threshold and controlling the battery charging circuit to operate in a second mode to output the DC current at a second voltage greater than the predefined threshold. In the first mode, the AC-to-DC converter is controlled to regulate a DC link voltage across a DC link capacitor and the DC-to-DC converter is configured to output the DC current at the first voltage. In the second mode, the AC-to-DC converter is controlled to output the DC current and the DC-to-DC converter is bypassed to equalize the DC link voltage with the second voltage.
    Type: Application
    Filed: July 9, 2024
    Publication date: January 15, 2026
    Applicant: Caterpillar Inc.
    Inventors: Bharadwaj Kaka, Divakar, Souvik Das
  • Patent number: 11449769
    Abstract: A cognitive cartography system receives a set of legacy documents, such as maps, in the form of physical hardcopy or as simple graphic images. The system, using rules derived from prior training and experience, revises the documents to resolve formal inconsistences like differences in resolution, orientation, or scale. The system assembles the adjusted documents into a seamless composite document represented as a computerized model. Applying learned rules and logic to contextual information received from extrinsic sources, the system infers semantic meaning from features represented by the composite, such as geographical features of a map. These inferences allow the system to derive new knowledge about the represented features, which is added to the model. When additional documents or contextual information are received, the system further refines the model by repeating this procedure. When the model has been sufficiently refined, the system makes the knowledge available to downstream systems.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: September 20, 2022
    Assignee: International Business Machines Corporation
    Inventors: Ravi Kumar Reddy Kanamatareddy, Gottumukkala Venkata Kalyan Rajesh, Souvik Das
  • Patent number: 10867270
    Abstract: This disclosure relates generally to vehicle diagnostics, and more particularly to systems and methods for vehicle tracking and service prediction. In one embodiment, a processor-implemented vehicle tracking and prediction method is disclosed. The method includes sending an electronic signal to activate in-vehicle data collection by an on-board data aggregator disposed in communication with each of an on-board vehicle computer, via an on-board diagnostic port, and one or more user devices. The method further includes receiving aggregated in-vehicle data from the on-board data aggregator, predicting a future vehicle service event based on the aggregated data, and generating a vehicle valuation metric based on the aggregated data. The method further includes sending a notification to at least one of the on-board vehicle computer and the one or more user devices, where the notification is based on the predicted future vehicle service event and the generated vehicle valuation metric.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: December 15, 2020
    Assignee: CAPITAL ONE SERVICES, LLC
    Inventors: Jason Hoover, Qiaochu Tang, Avid Ghamsari, Souvik Das
  • Patent number: 10824748
    Abstract: A method and system for providing a plurality of host systems shared access to data files from a file server. The method includes monitoring a control file for updates, the control file located within a corresponding host directory located within the file server; receiving a request for access to a data file stored on the file server, the access request being written to the control file, the access request including a requested data file operation; performing the requested data file operation in response to the control file being updated with the access request; creating a status file in the host directory in which the requested data file operation was performed upon completion of the requested data file operation; writing status data in the status file, the status data including a result of the performance of the requested data file operation; and allowing access to the host directory in which the requested data file operation was performed in response to the status data being written to the status file.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: November 3, 2020
    Assignee: Unisys Corporation
    Inventors: Carl R Crandall, Robert M Malek, Ravi Kumar Rao, Souvik Das, Manish Ranjan Mahanta
  • Patent number: 10810531
    Abstract: This disclosure relates generally to vehicle diagnostics, and more particularly to systems and methods for vehicle tracking and service prediction. In one embodiment, a processor-implemented vehicle tracking and prediction method is disclosed. The method includes sending an electronic signal to activate in-vehicle data collection by an on-board data aggregator disposed in communication with each of an on-board vehicle computer, via an on-board diagnostic port, and one or more user devices. The method further includes receiving, aggregated in-vehicle data from the on-board data aggregator, predicting a future vehicle service event based on the aggregated data, and generating a vehicle valuation metric based on the aggregated data. The method further includes sending a notification to at least one of the on-board vehicle computer and the one or more user devices, where the notification is based on the predicted future vehicle service event and the generated vehicle valuation metric.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: October 20, 2020
    Assignee: CAPITAL ONE SERVICES, LLC
    Inventors: Jason Hoover, Qiaochu Tang, Avid Ghamsari, Souvik Das
  • Publication number: 20200327429
    Abstract: A cognitive cartography system receives a set of legacy documents, such as maps, in the form of physical hardcopy or as simple graphic images. The system, using rules derived from prior training and experience, revises the documents to resolve formal inconsistences like differences in resolution, orientation, or scale. The system assembles the adjusted documents into a seamless composite document represented as a computerized model. Applying learned rules and logic to contextual information received from extrinsic sources, the system infers semantic meaning from features represented by the composite, such as geographical features of a map. These inferences allow the system to derive new knowledge about the represented features, which is added to the model. When additional documents or contextual information are received, the system further refines the model by repeating this procedure. When the model has been sufficiently refined, the system makes the knowledge available to downstream systems.
    Type: Application
    Filed: April 11, 2019
    Publication date: October 15, 2020
    Inventors: Ravi Kumar Reddy Kanamatareddy, Gottumukkala Venkata Kalyan Rajesh, Souvik Das
  • Publication number: 20190258810
    Abstract: A method and system for providing a plurality of host systems shared access to data files from a file server. The method includes monitoring a control file for updates, the control file located within a corresponding host directory located within the file server; receiving a request for access to a data file stored on the file server, the access request being written to the control file, the access request including a requested data file operation; performing the requested data file operation in response to the control file being updated with the access request; creating a status file in the host directory in which the requested data file operation was performed upon completion of the requested data file operation; writing status data in the status file, the status data including a result of the performance of the requested data file operation; and allowing access to the host directory in which the requested data file operation was performed in response to the status data being written to the status file.
    Type: Application
    Filed: March 23, 2018
    Publication date: August 22, 2019
    Applicant: Unisys Corporation
    Inventors: CARL R. CRANDALL, ROBERT M. MALEK, RAVI KUMAR RAO, SOUVIK DAS, MANISH RANJAN MAHANTA
  • Publication number: 20180137474
    Abstract: This disclosure relates generally to vehicle diagnostics, and more particularly to systems and methods for vehicle tracking and service prediction. In one embodiment, a processor-implemented vehicle tracking and prediction method is disclosed. The method includes sending an electronic signal to activate in-vehicle data collection by an on-board data aggregator disposed in communication with each of an on-board vehicle computer, via an on-board diagnostic port, and one or more user devices. The method further includes receiving, aggregated in-vehicle data from the on-board data aggregator, predicting a future vehicle service event based on the aggregated data, and generating a vehicle valuation metric based on the aggregated data. The method further includes sending a notification to at least one of the on-board vehicle computer and the one or more user devices, where the notification is based on the predicted future vehicle service event and the generated vehicle valuation metric.
    Type: Application
    Filed: January 12, 2018
    Publication date: May 17, 2018
    Applicant: Capital One Services, LLC
    Inventors: Jason HOOVER, Qiaochu TANG, Avid GHAMSARI, Souvik DAS
  • Publication number: 20170083874
    Abstract: This disclosure relates generally to vehicle diagnostics, and more particularly to systems and methods for vehicle tracking and service prediction. In one embodiment, a processor-implemented vehicle tracking and prediction method is disclosed. The method includes sending an electronic signal to activate in-vehicle data collection by an on-board data aggregator disposed in communication with each of an on-board vehicle computer, via an on-board diagnostic port, and one or more user devices. The method further includes receiving aggregated in-vehicle data from the on-board data aggregator, predicting a future vehicle service event based on the aggregated data, and generating a vehicle valuation metric based on the aggregated data. The method further includes sending a notification to at least one of the on-board vehicle computer and the one or more user devices, where the notification is based on the predicted future vehicle service event and the generated vehicle valuation metric.
    Type: Application
    Filed: September 16, 2016
    Publication date: March 23, 2017
    Inventors: Jason Hoover, Qiaochu Tang, Avid Ghamsari, Souvik Das