Patents by Inventor SankaraRao KUNAPAREDDY

SankaraRao KUNAPAREDDY 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).

  • DRAM access in self-refresh state
    Patent number: 9824742
    Abstract: Systems and method are directed to accessing a Dynamic Random Access Memory (DRAM) system. A DRAM controller is designed to determine that a DRAM bank of a DRAM system is in a self-refresh state and allow one or more commands to access the DRAM bank without exiting the self-refresh state. The DRAM controller may select these one or more commands, based on one or more of a clock frequency, traffic conditions related to requests for accessing the DRAM bank, or a command type. The one or more commands may include at least one of read (RD), write (WR), or precharge (PRE) commands received while the DRAM bank is in the self-refresh state.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: November 21, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Mosaddiq Saifuddin, SankaraRao Kunapareddy
  • DRAM ACCESS IN SELF-REFRESH STATE
    Publication number: 20170316818
    Abstract: Systems and method are directed to accessing a Dynamic Random Access Memory (DRAM) system. A DRAM controller is designed to determine that a DRAM bank of a DRAM system is in a self-refresh state and allow one or more commands to access the DRAM bank without exiting the self-refresh state. The DRAM controller may select these one or more commands, based on one or more of a clock frequency, traffic conditions related to requests for accessing the DRAM bank, or a command type. The one or more commands may include at least one of read (RD), write (WR), or precharge (PRE) commands received while the DRAM bank is in the self-refresh state.
    Type: Application
    Filed: August 26, 2016
    Publication date: November 2, 2017
    Inventors: Mosaddiq Saifuddin, SankaraRao Kunapareddy
  • Controlling a refresh mode of a dynamic random access memory (DRAM) die
    Patent number: 9754655
    Abstract: In an embodiment, a dynamic random-access memory (DRAM) system configures an inactive portion of a DRAM die to operate in accordance with a self-refresh mode that is characterized by refreshes of the DRAM die being controlled by a local DRAM die controller integrated into the DRAM die. The DRAM system also configures an active portion of the DRAM die to operate in accordance with a controller-managed refresh mode while the inactive portion of the DRAM die operates in the self-refresh mode, the controller-managed refresh mode characterized by refreshes of the DRAM die being controlled by a controller that is external to the DRAM die.
    Type: Grant
    Filed: November 1, 2016
    Date of Patent: September 5, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Mosaddiq Saifuddin, SankaraRao Kunapareddy, Keunsoo Roh, Chun Xiang He, Pratik Patel, Nicholas Ambur, Jeremy Haugen
  • CONTROLLING A REFRESH MODE OF A DYNAMIC RANDOM ACCESS MEMORY (DRAM) DIE
    Publication number: 20170148504
    Abstract: In an embodiment, a dynamic random-access memory (DRAM) system configures an inactive portion of a DRAM die to operate in accordance with a self-refresh mode that is characterized by refreshes of the DRAM die being controlled by a local DRAM die controller integrated into the DRAM die. The DRAM system also configures an active portion of the DRAM die to operate in accordance with a controller-managed refresh mode while the inactive portion of the DRAM die operates in the self-refresh mode, the controller-managed refresh mode characterized by refreshes of the DRAM die being controlled by a controller that is external to the DRAM die.
    Type: Application
    Filed: November 1, 2016
    Publication date: May 25, 2017
    Inventors: Mosaddiq SAIFUDDIN, SankaraRao KUNAPAREDDY, Keunsoo ROH, Chun Xiang HE, Pratik PATEL, Nicholas AMBUR, Jeremy HAUGEN