Patents by Inventor Srirama Chandra

Srirama Chandra 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: 20250131081
    Abstract: Various techniques are provided for providing a root of trust chain, updating security protocols, and generating trusted customer configuration bitstreams for a programmable logic device (PLD). In one example, a method includes configuring hardware components of a PLD with an inherently trusted default set of operations immutably stored in a non-volatile memory and comprising a first root of trust for the PLD. The method also includes authenticating, by the hardware components configured with the default set of operations, a customer configuration bitstream comprising an updated set of operations. The method also includes reconfiguring the hardware components to replace the default set of operations with the updated set of operations if the authenticating is successful, wherein the updated set of operations comprise a second root of trust for the PLD. Additional devices, systems and methods are also provided.
    Type: Application
    Filed: October 15, 2024
    Publication date: April 24, 2025
    Inventors: Srirama Chandra, Mamta Gupta, Eric Sivertson
  • Publication number: 20250046108
    Abstract: A classification system is provided that separates unclassified pages into unclassified, separated documents and classifies the separated documents. The classification system applies a page-level recognition model to the unclassified pages to recognize the logical boundaries between documents and, based on the logical boundaries, separates the pages into unclassified, separated documents. The classification system further applies a document-level recognition model to classify the separated documents.
    Type: Application
    Filed: October 22, 2024
    Publication date: February 6, 2025
    Inventors: Sangeetha Yanamandra, Srirama Chandra Akella, Satish Chandra Paled, Newton Isaac Rajkumar
  • Patent number: 12197581
    Abstract: Systems and methods for provisioning secure programmable logic devices (PLDs) are disclosed. An example secure PLD provisioning system includes an external system comprising a processor and a memory and configured to be coupled to a secure PLD through a configuration input/output (I/O) of the secure PLD. The external system is configured to generate a locked PLD comprising the secure PLD based, at least in part, on a request from a secure PLD customer, wherein the request from the secure PLD customer comprises a customer public key; and to provide a secured unlock package for the locked secure PLD. The external system may also be configured to provide an authenticatable key manifest comprising a customer programming key token and a corresponding programming public key associated with the locked secure PLD, wherein the authenticatable key manifest is signed using a programming private key generated by the locked secure PLD.
    Type: Grant
    Filed: November 9, 2020
    Date of Patent: January 14, 2025
    Assignee: Lattice Semiconductor Corporation
    Inventors: Srirama Chandra, Fulong Zhang, Sreepada Hegade, Joel Coplen, Wei Han, Yu Sun
  • Patent number: 12189777
    Abstract: Systems and methods for secure booting of secure programmable logic devices (PLDs) are disclosed. An example system includes a secure PLD including programmable logic blocks (PLBs) arranged in a PLD fabric of the secure PLD, and a configuration engine configured to program the PLD fabric according to a configuration image stored in a non-volatile memory (NVM) of the secure PLD and/or coupled through a configuration input/output (I/O) of the secure PLD to the configuration engine. The secure PLD is configured to retrieve a pre-authentication status associated with the configuration image from the NVM, determine or verify the retrieved pre-authentication status associated with the configuration image includes a valid status, and boot the PLD fabric of the secure PLD using the configuration image.
    Type: Grant
    Filed: November 9, 2020
    Date of Patent: January 7, 2025
    Assignee: Lattice Semiconductor Corporation
    Inventors: Fulong Zhang, Srirama Chandra, Sreepada Hegade, Joel Coplen, Wei Han, Yu Sun
  • Patent number: 12159476
    Abstract: A classification system is provided that separates unclassified pages into unclassified, separated documents and classifies the separated documents. The classification system applies a page-level recognition model to the unclassified pages to recognize the logical boundaries between documents and, based on the logical boundaries, separates the pages into unclassified, separated documents. The classification system further applies a document-level recognition model to classify the separated documents.
    Type: Grant
    Filed: January 2, 2023
    Date of Patent: December 3, 2024
    Assignee: OPEN TEXT SA ULC
    Inventors: Sangeetha Yanamandra, Srirama Chandra Akella, Satish Chandra Paled, Newton Isaac Rajkumar
  • Publication number: 20240232439
    Abstract: Systems and methods for asset tamper detection management for secure programmable logic devices (PLDs) are disclosed. An example system includes a secure PLD including programmable logic blocks (PLBs) arranged in a PLD fabric of the secure PLD, and a configuration engine configured to program the PLD fabric according to a configuration image stored in a non-volatile memory (NVM) of the secure PLD and/or coupled through a configuration input/output (I/O) of the secure PLD to the configuration engine. The secure PLD is configured to detect an asset tamper attempt on a targeted asset of the secure PLD, and to lock a securable asset associated with the detected asset tamper attempt, where the securable asset includes the targeted asset, the configuration I/O, and/or a communication bus of the secure PLD.
    Type: Application
    Filed: February 22, 2024
    Publication date: July 11, 2024
    Inventors: Fulong Zhang, Yu Sun, Srirama Chandra, Sreepada Hegade, Joel Coplen, Wei Han, Warren Juenemann
  • Patent number: 11971992
    Abstract: Systems and methods for failure characterization of secure programmable logic devices (PLDs) are disclosed. An example system includes a secure PLD including programmable logic blocks (PLBs) arranged in PLD fabric of the secure PLD, and a configuration engine configured to program the PLD fabric according to a configuration image stored in non-volatile memory (NVM) of the secure PLD and/or coupled through a configuration input/output (I/O) of the secure PLD. The secure PLD is configured to receive a failure characterization (FC) command from the PLD fabric or an external system coupled to the secure PLD through the configuration I/O, and to execute the FC command to, at least in part, erase and/or nullify portions of the NVM. The secure PLD may also be configured to boot a debug configuration for the PLD fabric that identifies and/or characterizes operational failures of the secure PLD.
    Type: Grant
    Filed: November 9, 2020
    Date of Patent: April 30, 2024
    Assignee: Lattice Semiconductor Corporation
    Inventors: Fulong Zhang, Srirama Chandra, Sreepada Hegade, Joel Coplen, Wei Han, Yu Sun
  • Patent number: 11914716
    Abstract: Systems and methods for asset management for secure programmable logic devices (PLDs) are disclosed. An example system includes a secure PLD including programmable logic blocks (PLBs) arranged in PLD fabric of the secure PLD, and a configuration engine configured to program the PLD fabric according to a configuration image stored in non-volatile memory (NVM) of the secure PLD and/or coupled through a configuration input/output (I/O) of the secure PLD. The secure PLD is configured to receive a secure PLD asset access request from the PLD fabric or an external system coupled to the secure PLD through the configuration I/O, and to perform a secure PLD asset update process corresponding to the secure PLD asset access request, where the performing the asset update process is based on a lock status associated with a secure PLD asset corresponding to the secure PLD asset access request.
    Type: Grant
    Filed: November 9, 2020
    Date of Patent: February 27, 2024
    Assignee: Lattice Semiconductor Corporation
    Inventors: Fulong Zhang, Srirama Chandra, Sreepada Hegade, Joel Coplen, Wei Han, Yu Sun
  • Publication number: 20230315913
    Abstract: Various techniques are provided to implement multi-chip secure and programmable systems and methods. In one example, a multi-chip module system for providing an integrated programmable logic functionality and security functionality. The multi-chip module system includes a first die including a programmable logic device (PLD) configured to provide at least a portion of the programmable logic functionality. The multi-chip system further includes a second die including a security engine configured to perform at least a portion of the security functionality. The security engine is further configured to receive, from the first die, data associated with a first and second configuration image; perform a read operation on a memory for the second configuration image based on the data; and authenticate the second configuration image. The multi-chip system further includes a configuration engine configured to program the PLD according to the first configuration image. Related devices and methods are provided.
    Type: Application
    Filed: June 7, 2023
    Publication date: October 5, 2023
    Inventors: Srirama Chandra, Tim Vogt, Mamta Gupta, Sharath Raghava
  • Publication number: 20230145743
    Abstract: A classification system is provided that separates unclassified pages into unclassified, separated documents and classifies the separated documents. The classification system applies a page-level recognition model to the unclassified pages to recognize the logical boundaries between documents and, based on the logical boundaries, separates the pages into unclassified, separated documents. The classification system further applies a document-level recognition model to classify the separated documents.
    Type: Application
    Filed: January 2, 2023
    Publication date: May 11, 2023
    Inventors: Sangeetha Yanamandra, Srirama Chandra Akella, Satish Chandra Paled, Newton Isaac Rajkumar
  • Patent number: 11544947
    Abstract: A classification system is provided that separates unclassified pages into unclassified, separated documents and classifies the separated documents. The classification system applies a page-level recognition model to the unclassified pages to recognize the logical boundaries between documents and, based on the logical boundaries, separates the pages into unclassified, separated documents. The classification system further applies a document-level recognition model to classify the separated documents.
    Type: Grant
    Filed: May 25, 2021
    Date of Patent: January 3, 2023
    Assignee: OPEN TEXT SA ULC
    Inventors: Sangeetha Yanamandra, Srirama Chandra Akella, Satish Chandra Paled, Newton Isaac Rajkumar
  • Patent number: 11295492
    Abstract: An electronic device associated with rendering of web content, a server, and a controlling method thereof are provided. The controlling method includes receiving a request for the web content from an electronic device by the server executing a program for a content renderer, generating a render structure associated with render commands by the server executing the program for the content renderer, and sending, by the server executing the program for the content renderer, the render structure to the electronic device to render the web content, and the render commands are issued to each layer of a rendering engine to render the web content of the electronic device.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: April 5, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Naveen Kumar S G, Pruthvi Kumar Madugundu, Srirama Chandra Sekhar Mogali, Joy Bose
  • Publication number: 20210286992
    Abstract: A classification system is provided that separates unclassified pages into unclassified, separated documents and classifies the separated documents. The classification system applies a page-level recognition model to the unclassified pages to recognize the logical boundaries between documents and, based on the logical boundaries, separates the pages into unclassified, separated documents. The classification system further applies a document-level recognition model to classify the separated documents.
    Type: Application
    Filed: May 25, 2021
    Publication date: September 16, 2021
    Inventors: Sangeetha Yanamandra, Srirama Chandra Akella, Satish Chandra Paled
  • Patent number: 11030446
    Abstract: A classification system is provided that separates unclassified pages into unclassified, separated documents and classifies the separated documents. The classification system applies a page-level recognition model to the unclassified pages to recognize the logical boundaries between documents and, based on the logical boundaries, separates the pages into unclassified, separated documents. The classification system further applies a document-level recognition model to classify the separated documents.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: June 8, 2021
    Assignee: Open Text SA ULC
    Inventors: Sangeetha Yanamandra, Srirama Chandra Akella, Satish Chandra Paled, Newton Isaac Rajkumar
  • Publication number: 20210081578
    Abstract: Systems and methods for failure characterization of secure programmable logic devices (PLDs) are disclosed. An example system includes a secure PLD including programmable logic blocks (PLBs) arranged in PLD fabric of the secure PLD, and a configuration engine configured to program the PLD fabric according to a configuration image stored in non-volatile memory (NVM) of the secure PLD and/or coupled through a configuration input/output (I/O) of the secure PLD. The secure PLD is configured to receive a failure characterization (FC) command from the PLD fabric or an external system coupled to the secure PLD through the configuration I/O, and to execute the FC command to, at least in part, erase and/or nullify portions of the NVM. The secure PLD may also be configured to boot a debug configuration for the PLD fabric that identifies and/or characterizes operational failures of the secure PLD.
    Type: Application
    Filed: November 9, 2020
    Publication date: March 18, 2021
    Inventors: Fulong Zhang, Srirama Chandra, Sreepada Hegade, Joel Coplen, Wei Han, Yu Sun
  • Publication number: 20210081536
    Abstract: Systems and methods for secure booting of secure programmable logic devices (PLDs) are disclosed. An example system includes a secure PLD including programmable logic blocks (PLBs) arranged in a PLD fabric of the secure PLD, and a configuration engine configured to program the PLD fabric according to a configuration image stored in a non-volatile memory (NVM) of the secure PLD and/or coupled through a configuration input/output (I/O) of the secure PLD to the configuration engine. The secure PLD is configured to retrieve a pre-authentication status associated with the configuration image from the NVM, determine or verify the retrieved pre-authentication status associated with the configuration image includes a valid status, and boot the PLD fabric of the secure PLD using the configuration image.
    Type: Application
    Filed: November 9, 2020
    Publication date: March 18, 2021
    Inventors: Fulong Zhang, Srirama Chandra, Sreepada Hegade, Joel Coplen, Wei Han, Yu Sun
  • Publication number: 20210081577
    Abstract: Systems and methods for asset management for secure programmable logic devices (PLDs) are disclosed. An example system includes a secure PLD including programmable logic blocks (PLBs) arranged in PLD fabric of the secure PLD, and a configuration engine configured to program the PLD fabric according to a configuration image stored in non-volatile memory (NVM) of the secure PLD and/or coupled through a configuration input/output (I/O) of the secure PLD. The secure PLD is configured to receive a secure PLD asset access request from the PLD fabric or an external system coupled to the secure PLD through the configuration I/O, and to perform a secure PLD asset update process corresponding to the secure PLD asset access request, where the performing the asset update process is based on a lock status associated with a secure PLD asset corresponding to the secure PLD asset access request.
    Type: Application
    Filed: November 9, 2020
    Publication date: March 18, 2021
    Inventors: Fulong Zhang, Srirama Chandra, Sreepada Hegade, Joel Coplen, Wei Han, Yu Sun
  • Publication number: 20210083675
    Abstract: Systems and methods for provisioning secure programmable logic devices (PLDs) are disclosed. An example secure PLD provisioning system includes an external system comprising a processor and a memory and configured to be coupled to a secure PLD through a configuration input/output (I/O) of the secure PLD. The external system is configured to generate a locked PLD comprising the secure PLD based, at least in part, on a request from a secure PLD customer, wherein the request from the secure PLD customer comprises a customer public key; and to provide a secured unlock package for the locked secure PLD. The external system may also be configured to provide an authenticatable key manifest comprising a customer programming key token and a corresponding programming public key associated with the locked secure PLD, wherein the authenticatable key manifest is signed using a programming private key generated by the locked secure PLD.
    Type: Application
    Filed: November 9, 2020
    Publication date: March 18, 2021
    Inventors: Srirama Chandra, Fulong Zhang, Sreepada Hegade, Joel Coplen, Wei Han, Yu Sun
  • Publication number: 20200394396
    Abstract: A classification system is provided that separates unclassified pages into unclassified, separated documents and classifies the separated documents. The classification system applies a page-level recognition model to the unclassified pages to recognize the logical boundaries between documents and, based on the logical boundaries, separates the pages into unclassified, separated documents. The classification system further applies a document-level recognition model to classify the separated documents.
    Type: Application
    Filed: June 11, 2019
    Publication date: December 17, 2020
    Inventors: Sangeetha Yanamandra, Srirama Chandra Akella, Satish Chandra Paled, Newton Isaac Rajkumar
  • Patent number: 10754401
    Abstract: In one embodiment, a reconfigurable and scalable hardware management architecture includes a digital controller for controlling two or more analog sense-and-control (ASC) circuits, where each ASC monitors voltage, current, and temperature of one or more power supplies, ICs, or a circuit board. The controller and ASCs are connected in a star architecture, where each ASC is connected to the controller via a different, dedicated interface to communicate regarding the power supplies being monitored. The controller and the ASCs are also connected in a bus architecture via a shared interface. The architecture can be re-configured by adding one or more additional ASCs or by removing one or more existing ASCs, where each additional ASC is (i) connected to a different I/O interface of the digital controller via a different, dedicated interface and (ii) connected to the digital controller and the two or more existing ASCs via the shared interface.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: August 25, 2020
    Assignee: LATTICE SEMICONDUCTOR CORPORATION
    Inventors: Srirama Chandra, Robert Bartel