Patents by Inventor Stephen F. Shirron

Stephen F. Shirron 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).

  • Patent number: 6647508
    Abstract: Multiple instances of operating systems execute cooperatively in a single multiprocessor computer wherein all processors and resources are electrically connected together. The single physical machine with multiple physical processors and resources is subdivided by software into multiple partitions, each with the ability to run a distinct copy, or instance, of an operating system. At different times, different operating system instances may be loaded on a given partition. Resources, such as CPUs and memory, can be dynamically assigned to different partitions and used by instances of operating systems running within the machine by modifying the configuration. The partitions themselves can also be changed without rebooting the system by modifying the configuration tree.
    Type: Grant
    Filed: June 10, 1998
    Date of Patent: November 11, 2003
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Stephen H. Zalewski, Andrew H. Mason, Gregory H. Jordan, Karen L. Noel, James R. Kauffman, Paul K. Harter, Jr., Frederick G. Kleinsorge, Stephen F. Shirron
  • Publication number: 20020016892
    Abstract: Multiple instances of operating systems execute cooperatively in a single multiprocessor computer wherein all processors and resources are electrically connected together. The single physical machine with multiple physical processors and resources is subdivided by software into multiple partitions, each with the ability to run a distinct copy, or instance, of an operating system. At different times, different operating system instances may be loaded on a given partition. Resources, such as CPUs and memory, can be dynamically assigned to different partitions and used by instances of operating systems running within the machine by modifying the configuration. The partitions themselves can also be changed without rebooting the system by modifying the configuration tree.
    Type: Application
    Filed: June 10, 1998
    Publication date: February 7, 2002
    Inventors: STEPHEN H. ZALEWSKI, ANDREW H. MASON, GREGORY H. JORDAN, KAREN L. NOEL, JAMES R. KAUFFMAN, PAUL K. HARTER, JR., FREDERICK G. KLEINSORGE, STEPHEN F. SHIRRON
  • Publication number: 20010037426
    Abstract: A translation technique facilitates servicing of device interrupts by a proxy processor of a multiprocessor system having an interrupt delivery/handling subsystem. A target processor of the system is originally designated to service the interrupts, whereas the proxy processor is configured to service the interrupts in response to hot-swap of the target processor. The translation technique provides dual mapping of a device interrupt queue (DIQ) associated with the target processor and used to store vectors describing the device interrupts. The dual mapping technique allows the DIQ to be accessed via either a “fast access” or “slow access” mode. The fast access mode provides optimized access to the DIQ by the target processor via processor-specific space addressing, whereas the slow access mode provides slower, yet flexible, access to the DIQ by any other processor, such as the proxy processor, via general system space addressing.
    Type: Application
    Filed: April 18, 2001
    Publication date: November 1, 2001
    Inventors: Chester W. Pawlowski, Stephen F. Shirron, Stephen R. Van Doren
  • Patent number: 6247109
    Abstract: Multiple instances of operating systems execute cooperatively in a single multiprocessor computer wherein all processors and resources are electrically connected together. The single physical machine with multiple physical processors and resources is subdivided by software into multiple partitions, each with the ability to run a distinct copy, or instance, of an operating system. At different times, different operating system instances may be loaded on a given partition. Resources, such as CPUs and memory, can be dynamically assigned to different partitions and used by instances of operating systems running within the machine by modifying the configuration. The partitions themselves can also be changed without rebooting the system by modifying the configuration tree. CPUs, in particular, may be migrated, or reassigned, from one operating system instance to another, allowing different loads in the system to be accommodated.
    Type: Grant
    Filed: June 10, 1998
    Date of Patent: June 12, 2001
    Assignee: Compaq Computer Corp.
    Inventors: Frederick G. Kleinsorge, Stephen F. Shirron
  • Patent number: 6226734
    Abstract: Multiple instances of operating systems execute cooperatively in a single multiprocessor computer wherein all processors and resources are electrically connected together. The single physical machine with multiple physical processors and resources is subdivided by software into multiple partitions, each with the ability to run a distinct copy, or instance, of an operating system. At different times, different operating system instances may be loaded on a given partition. Resources, such as CPUs and memory, can be dynamically assigned to different partitions and used by instances of operating systems running within the machine by modifying the configuration. The partitions themselves can also be changed without rebooting the system by modifying the configuration tree. CPUs, in particular, may be migrated, or reassigned, from one partition and operating system instance to another, allowing different loads in the system to be accommodated.
    Type: Grant
    Filed: June 10, 1998
    Date of Patent: May 1, 2001
    Assignee: Compaq Computer Corporation
    Inventors: Frederick G. Kleinsorge, Stephen F. Shirron
  • Patent number: 5797023
    Abstract: An apparatus is described to provide a fault tolerant power-on of a computer system, using a BIOS memory containing a primary power-on system level configuration program for a computer system and a separate memory which contains a subset of the primary power-on system level configuration program. The subset program is accessed automatically, without human intervention, responding to a checksum detector of the BIOS memory data.
    Type: Grant
    Filed: July 10, 1997
    Date of Patent: August 18, 1998
    Assignee: Digital Equipment Corporation
    Inventors: Rachael Berman, Stephen F. Shirron, Fidelma Hayes, Kevin Peterson, Marco Ciaffi
  • Patent number: 5408612
    Abstract: An apparatus which allows for software sharing between multiple controllers includes a computer bus and a plurality of processors each having input and output ports coupled to the bus. Each processor also has at least one internal storage register. The apparatus further includes means, which are responsive to a signal indicating which one of the plurality of processors is controlling the computer bus and to a portion of address data on the bus, for issuing a control signal to one of the plurality of processors to permit that one processor access to at least one of its internal storage register when that processor issues a bus access request having an address which is within the range of addresses of all the processors.
    Type: Grant
    Filed: September 9, 1992
    Date of Patent: April 18, 1995
    Assignee: Digital Equipment Corporation
    Inventors: Stephen F. Shirron, Ralph O. Weber, Thomas E. Hunt