Patents by Inventor Toby Opferman

Toby Opferman 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: 20160011872
    Abstract: Methods and apparatuses for generating a suppressed address trace are described. In some embodiments, a processor includes a trace generator having a trace suppressor that outputs a suppressed address trace for instructions executed by the processor. In some embodiments, a method to generate a suppressed address trace for a processor includes generating a suppressed address trace of executed instructions from a trace suppressor of a trace generator of the processor.
    Type: Application
    Filed: July 9, 2014
    Publication date: January 14, 2016
    Inventors: TOBY OPFERMAN, JAMES B. CROSSLAND, JASON W. BRANDT, BEEMAN C. STRONG
  • Patent number: 9207940
    Abstract: Robust system call and system return instructions are executed by a processor to transfer control between a requester and an operating system kernel. The processor includes execution circuitry and registers that store pointers to data structures in memory. The execution circuitry receives a system call instruction from a requester to transfer control from a first privilege level of the requester to a second privilege level of an operating system kernel. In response, the execution circuitry swaps the data structures that are pointed to by the registers between the requester and the operating system kernel in one atomic transition.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: December 8, 2015
    Assignee: Intel Corporation
    Inventors: Baiju V. Patel, James B. Crossland, Atul A. Khare, Toby Opferman
  • Publication number: 20140365742
    Abstract: An example processing system may comprise: a lower stack bound register configured to store a first memory address, the first memory address identifying a lower bound of a memory addressable via a stack segment; an upper stack bound register configured to store a second memory address, the second memory address identifying an upper bound of the memory addressable via the stack segment; and a stack bounds checking logic configured to detect unauthorized stack pivoting, by comparing a memory address being accessed via the stack segment with at least one of the first memory address and the second memory address.
    Type: Application
    Filed: June 5, 2013
    Publication date: December 11, 2014
    Inventors: BAIJU V. PATEL, XIAONING LI, H P. ANVIN, ASIT K. MALLICK, GILBERT NEIGER, JAMES B. CROSSLAND, TOBY OPFERMAN, ATUL A. KHARE, JASON W. BRANDT, JAMES S. COKE, BRIAN L. VAJDA
  • Publication number: 20140281437
    Abstract: Robust system call and system return instructions are executed by a processor to transfer control between a requester and an operating system kernel. The processor includes execution circuitry and registers that store pointers to data structures in memory. The execution circuitry receives a system call instruction from a requester to transfer control from a first privilege level of the requester to a second privilege level of an operating system kernel. In response, the execution circuitry swaps the data structures that are pointed to by the registers between the requester and the operating system kernel in one atomic transition.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Inventors: Baiju V. Patel, James B. Crossland, Atul A. Khare, Toby Opferman
  • Patent number: 8677022
    Abstract: A system and method for updating a remote display unit that communicates with a computing system are described. The method includes accessing display update information from an update queue that stores drawing commands issued by an application executing on the computing system, caching the display update information, applying a lossy compression algorithm to the display update information to create a lossy display update, and transmitting the lossy update to the remote display. The method also includes applying a lossless compression algorithm to the display update information in the cache to create a lossless display update and transmitting the lossless display update a predetermined of time after transmitting the lossy update.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: March 18, 2014
    Assignee: Citrix Systems, Inc.
    Inventors: Justin Bullard, Toby Opferman
  • Publication number: 20140013045
    Abstract: A method and system are disclosed. In one embodiment the method includes allocating several memory locations within a phase change memory and switch (PCMS) memory to be utilized as a Random Access Memory (RAM) Disk. The RAM Disk is created for use by a software application running in a computer system. The method also includes mapping at least a portion of the allocated amount of PCMS memory to the software application address space. Finally, the method also grants the software application direct access to at least a portion of the allocated amount of the PCMS memory.
    Type: Application
    Filed: December 29, 2011
    Publication date: January 9, 2014
    Inventors: James B. Crossland, Toby Opferman, Blaise Fanning
  • Publication number: 20130229431
    Abstract: A system and method for updating a remote display unit that communicates with a computing system are described. The method includes accessing display update information from an update queue that stores drawing commands issued by an application executing on the computing system, caching the display update information, applying a lossy compression algorithm to the display update information to create a lossy display update, and transmitting the lossy update to the remote display. The method also includes applying a lossless compression algorithm to the display update information in the cache to create a lossless display update and transmitting the lossless display update a predetermined of time after transmitting the lossy update.
    Type: Application
    Filed: March 18, 2013
    Publication date: September 5, 2013
    Applicant: Citrix Systems, Inc.
    Inventors: Justin Bullard, Toby Opferman
  • Patent number: 8423673
    Abstract: A system and method for updating a remote display unit that communicates with a computing system are described. The method includes accessing display update information from an update queue that stores drawing commands issued by an application executing on the computing system, caching the display update information, applying a lossy compression algorithm to the display update information to create a lossy display update, and transmitting the lossy update to the remote display. The method also includes applying a lossless compression algorithm to the display update information in the cache to create a lossless display update and transmitting the lossless display update a predetermined of time after transmitting the lossy update.
    Type: Grant
    Filed: March 14, 2005
    Date of Patent: April 16, 2013
    Assignee: Citrix Systems, Inc.
    Inventors: Justin Bullard, Toby Opferman
  • Publication number: 20120191877
    Abstract: A system and method for updating a display unit remotely located from a computing system are described. The method includes copying display information from a video buffer of a computing device executing an application to generate a display update, calculating a size of the display update, and determining an amount of available bandwidth of a network connecting the computing device and the display unit. The method also includes calculating a time period required to communicate the display update from the computing device to the display unit, transmitting the display update to the display; and repeating the method after the time period has elapsed.
    Type: Application
    Filed: March 29, 2012
    Publication date: July 26, 2012
    Inventors: JUSTIN BULLARD, Toby Opferman, David J. Kasik
  • Patent number: 8171169
    Abstract: A system and method for updating a display unit remotely located from a computing system are described. The method includes copying display information from a video buffer of a computing device executing an application to generate a display update, calculating a size of the display update, and determining an amount of available bandwidth of a network connecting the computing device and the display unit. The method also includes calculating a time period required to communicate the display update from the computing device to the display unit, transmitting the display update to the display; and repeating the method after the time period has elapsed.
    Type: Grant
    Filed: March 14, 2005
    Date of Patent: May 1, 2012
    Assignee: Citrix Systems, Inc.
    Inventors: Justin Bullard, Toby Opferman, David J. Kasik
  • Publication number: 20060203007
    Abstract: A system and method for updating a remote display unit that communicates with a computing system are described. The method includes accessing display update information from an update queue that stores drawing commands issued by an application executing on the computing system, caching the display update information, applying a lossy compression algorithm to the display update information to create a lossy display update, and transmitting the lossy update to the remote display. The method also includes applying a lossless compression algorithm to the display update information in the cache to create a lossless display update and transmitting the lossless display update a predetermined of time after transmitting the lossy update.
    Type: Application
    Filed: March 14, 2005
    Publication date: September 14, 2006
    Applicant: Citrix Systems, Inc.
    Inventors: Justin Bullard, Toby Opferman
  • Publication number: 20060206820
    Abstract: A system and method for updating a display unit remotely located from a computing system are described. The method includes copying display information from a video buffer of a computing device executing an application to generate a display update, calculating a size of the display update, and determining an amount of available bandwidth of a network connecting the computing device and the display unit. The method also includes calculating a time period required to communicate the display update from the computing device to the display unit, transmitting the display update to the display; and repeating the method after the time period has elapsed.
    Type: Application
    Filed: March 14, 2005
    Publication date: September 14, 2006
    Applicant: CITRIX SYSTEMS, INC.
    Inventors: Justin Bullard, Toby Opferman, David Kasik