Patents by Inventor Hemant Agrawal

Hemant Agrawal 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).

  • Zero-copy data transmission system
    Patent number: 9584628
    Abstract: A data transmission system for transmitting a data file from a server to a client device includes a processor, a memory and a network interface device. The memory includes a user space and a kernel space. The data file is stored in the kernel space. The processor receives a transmission request from the client device for transmitting the data file. The processor maps a set of virtual addresses corresponding to the data file to the user space as a mapped data file, and stores a set of physical addresses corresponding to the set of virtual addresses in a set of meta-buffers of a socket created in the user space. The network interface device retrieves the data file from the kernel space based on the set of physical addresses from the set of meta-buffers, and transmits the data file to the client device.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: February 28, 2017
    Assignee: FREESCALE SEMICONDUCTOR, INC.
    Inventors: Arun Pathak, Hemant Agrawal, Sahil Malhotra
  • ZERO-COPY DATA TRANSMISSION SYSTEM
    Publication number: 20160275042
    Abstract: A data transmission system for transmitting a data file from a server to a client device includes a processor, a memory and a network interface device. The memory includes a user space and a kernel space. The data file is stored in the kernel space. The processor receives a transmission request from the client device for transmitting the data file. The processor maps a set of virtual addresses corresponding to the data file to the user space as a mapped data file, and stores a set of physical addresses corresponding to the set of virtual addresses in a set of meta-buffers of a socket created in the user space. The network interface device retrieves the data file from the kernel space based on the set of physical addresses from the set of meta-buffers, and transmits the data file to the client device.
    Type: Application
    Filed: March 17, 2015
    Publication date: September 22, 2016
    Inventors: ARUN PATHAK, Hemant Agrawal, Sahil Malhotra
  • Method and apparatus for S.I.P./H.323 interworking
    Patent number: 9420009
    Abstract: An interworking function (IWF) for a first and second protocol based network, for example, an H.323 protocol based network and an SIP protocol based network comprises an interworking gateway server including a state machine for defining each call processing state and a translation table for use in translating addresses formatted in each protocol.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: August 16, 2016
    Assignee: AT&T INTELLECTUAL PROPERTY II, L.P.
    Inventors: Hemant Agrawal, Radhika R. Roy, Vipin Palawat
  • Method And Apparatus For S.I.P./H.323 Interworking
    Publication number: 20140226654
    Abstract: An interworking function (IWF) for a first and second protocol based network, for example, an H.323 protocol based network and an SIP protocol based network comprises an interworking gateway server including a state machine for defining each call processing state and a translation table for use in translating addresses formatted in each protocol.
    Type: Application
    Filed: April 15, 2014
    Publication date: August 14, 2014
    Applicant: AT&T Intellectual Property II, L.P.
    Inventors: Hemant Agrawal, Radhika R. Roy, Vipin Palawat
  • Method and apparatus for S.I.P./H.323 interworking
    Patent number: 8699516
    Abstract: An interworking function (IWF) for a first and second protocol based network, for example, an H.323 protocol based network and an SIP protocol based network comprises an interworking gateway server including a state machine for defining each call processing state and a translation table for use in translating addresses formatted in each protocol.
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: April 15, 2014
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Hemant Agrawal, Radhika R. Roy, Vipin Palawat
  • METHOD AND APPARATUS FOR S.I.P./H.323 INTERWORKING
    Publication number: 20110191486
    Abstract: An interworking function (IWF) for a first and second protocol based network, for example, an H.323 protocol based network and an SIP protocol based network comprises an interworking gateway server including a state machine for defining each call processing state and a translation table for use in translating addresses formatted in each protocol.
    Type: Application
    Filed: April 8, 2011
    Publication date: August 4, 2011
    Applicant: AT&T INTELLECTUAL PROPERTY II, L.P.
    Inventors: Hemant Agrawal, Radhika R. Roy, Vipin Palawat
  • Method and apparatus for S.I.P./H.323 interworking
    Patent number: 7953111
    Abstract: An interworking function (IWF) for a first and second protocol based network, for example, an H.323 protocol based network and an SIP protocol based network comprises an interworking gateway server including a state machine for defining each call processing state and a translation table for use in translating addresses formatted in each protocol.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: May 31, 2011
    Assignee: AT&T Intellectual Property II, LP
    Inventors: Hemant Agrawal, Radhika R. Roy, Vipin Palawat
  • Method and apparatus for S.I.P./H. 323 interworking
    Patent number: 7002989
    Abstract: An interworking function (IWF) for a first and second protocol based network, for example, an H.323 protocol based network and an SIP protocol based network comprises an interworking gateway server including a state machine for defining each call processing state and a translation table for use in translating addresses formatted in each protocol.
    Type: Grant
    Filed: April 4, 2001
    Date of Patent: February 21, 2006
    Assignee: AT&T Corp.
    Inventors: Hemant Agrawal, Radhika R. Roy, Vipin Palawat
  • Method and apparatus for S.I.P./H.323 interworking
    Publication number: 20060007954
    Abstract: An interworking function (IWF) for a first and second protocol based network, for example, an H.323 protocol based network and an SIP protocol based network comprises an interworking gateway server including a state machine for defining each call processing state and a translation table for use in translating addresses formatted in each protocol.
    Type: Application
    Filed: September 16, 2005
    Publication date: January 12, 2006
    Inventors: Hemant Agrawal, Radhika Roy, Vinpin Palawat
  • Method and apparatus for S.I.P./H. 323 interworking
    Publication number: 20010046234
    Abstract: An interworking function (IWF) for a first and second protocol based network, for example, an H.323 protocol based network and an SIP protocol based network comprises an interworking gateway server including a state machine for defining each call processing state and a translation table for use in translating addresses formatted in each protocol.
    Type: Application
    Filed: April 4, 2001
    Publication date: November 29, 2001
    Inventors: Hemant Agrawal, Radhika R. Roy, Vipin Palawat