Patents by Inventor John D. Service
John D. Service 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: 7441159Abstract: Checksum values are used to detect low-level data corruption. I/O operations, such as, for example, read operations and write operations, cause data blocks to pass through a number of low-level drivers when the data blocks are transferred between an operating system and mass storage location. A checksum filter driver intercepts a data block as the data block passes between low-level drivers as a result of the performance of an I/O operation. The checksum filter driver calculates a first checksum value for the data block. The checksum filter subsequently intercepts the data block as the data block passes between low-level drivers as a result of the performance of a subsequent I/O operation. The checksum filter driver calculates a second checksum value for the data block. The first checksum value and the second checksum value are compared. Data corruption is detected when a checksum mismatch occurs.Type: GrantFiled: January 26, 2006Date of Patent: October 21, 2008Assignee: Microsoft CorporationInventors: Yi Meng, John D. Service, Sidhartha
-
Patent number: 7302613Abstract: A system, method and interface for consistently capturing kernel resident information are provided. An operating system architecture includes user mode modules and kernel mode applications. A user mode module initiates a kernel mode information request through an application program interface identifying one or more process threads of interest. A kernel mode module captures information corresponding to standard kernel mode information and corresponding to the specifically identified process threads. The information is returned in a pre-allocated buffer.Type: GrantFiled: November 12, 2003Date of Patent: November 27, 2007Assignee: Microsoft CorporationInventors: Andrew L. Bliss, John D. Service, Narayanan Ganapathy, Neill M. Clift, Yi Meng
-
Patent number: 7028172Abstract: A method and a system for obtaining shutdown information for a computer allows a user to indicate a reason or reasons for the shutdown. The states of the user mode processes that are running on the computer are saved for later analysis. The state information as well as the shutdown reason entered by the user is stored in a computer-readable memory, such as in the form of a log file. A user may report a shutdown reason by selecting a reason from a predefined reason list and/or by typing a reason in a comment area.Type: GrantFiled: October 29, 2001Date of Patent: April 11, 2006Assignee: Microsoft CorporationInventors: Björn B. Levidow, John D. Service, Vincent R. Orgovan, Wael H. Bahaa-El-Din
-
Patent number: 7020798Abstract: Checksum values are used to detect low-level data corruption. I/O operations, such as, for example, read operations and write operations, cause data blocks to pass through a number of low-level drivers when the data blocks are transferred between an operating system and mass storage location. A checksum filter driver intercepts a data block as the data block passes between low-level drivers as a result of the performance of an I/O operation. The checksum filter driver calculates a first checksum value for the data block. The checksum filter subsequently intercepts the data block as the data block passes between low-level drivers as a result of the performance of a subsequent I/O operation. The checksum filter driver calculates a second checksum value for the data block. The first checksum value and the second checksum value are compared. Data corruption is detected when a checksum mismatch occurs.Type: GrantFiled: June 27, 2002Date of Patent: March 28, 2006Assignee: Microsoft CorporationInventors: Yi Meng, John D. Service, FNU Sidhartha
-
Publication number: 20040003316Abstract: Checksum values are used to detect low-level data corruption. I/O operations, such as, for example, read operations and write operations, cause data blocks to pass through a number of low-level drivers when the data blocks are transferred between an operating system and mass storage location. A checksum filter driver intercepts a data block as the data block passes between low-level drivers as a result of the performance of an I/O operation. The checksum filter driver calculates a first checksum value for the data block. The checksum filter subsequently intercepts the data block as the data block passes between low-level drivers as a result of the performance of a subsequent I/O operation. The checksum filter driver calculates a second checksum value for the data block. The first checksum value and the second checksum value are compared. Data corruption is detected when a checksum mismatch occurs.Type: ApplicationFiled: June 27, 2002Publication date: January 1, 2004Inventors: Yi Meng, John D. Service, Sidhartha
-
Publication number: 20030084276Abstract: A method and a system for obtaining shutdown information for a computer allows a user to indicate a reason or reasons for the shutdown. The states of the user mode processes that are running on the computer are saved for later analysis. The state information as well as the shutdown reason entered by the user is stored in a computer-readable memory, such as in the form of a log file. A user may report a shutdown reason by selecting a reason from a predefined reason list and/or by typing a reason in a comment area.Type: ApplicationFiled: October 29, 2001Publication date: May 1, 2003Applicant: Microsoft CorporationInventors: Bjorn B. Levidow, John D. Service, Vincent R. Orgovan, Wael H. Bahaa-El- Din
-
Patent number: 5968185Abstract: In a fault-tolerant computer system, a primary replica supervisor is interposed between an operating system and a primary replica of an application program being executed by a primary processor. An object-code editor locates calls to the operating system and loops in the application program and inserts instruction sequences that enable the replica supervisor to intercept the calls to the operating system, results returned by the operating system as a result of the calls and asynchronous events delivered by the operating system to the replica. A backup replica supervisor is similarly interposed between an operating system and a backup replica of the application program being executed by a backup processor. The primary replica interacts with an environment.Type: GrantFiled: July 16, 1998Date of Patent: October 19, 1999Assignee: Stratus Computer, Inc.Inventors: Thomas C. Bressoud, John E. Ahern, Kenneth P. Birman, Robert C. B. Cooper, Bradford B. Glade, Fred B. Schneider, John D. Service
-
Patent number: 5802265Abstract: In a fault-tolerant computer system, a primary replica supervisor is interposed between an operating system and a primary replica of an application program being executed by a primary processor. An object-code editor locates calls to the operating system and loops in the application program and inserts instruction sequences that enable the replica supervisor to intercept the calls to the operating system, results returned by the operating system as a result of the calls and asynchronous events delivered by the operating system to the replica. A backup replica supervisor is similarly interposed between an operating system and a backup replica of the application program being executed by a backup processor. The primary replica interacts with an environment.Type: GrantFiled: December 1, 1995Date of Patent: September 1, 1998Assignee: Stratus Computer, Inc.Inventors: Thomas C. Bressoud, John E. Ahern, Kenneth P. Birman, Robert C. B. Cooper, Bradford B. Glade, Fred B. Schneider, John D. Service
-
Patent number: 5694541Abstract: A console terminal arrangement is disclosed for use in connection with a fault-tolerant computer system including a plurality of processing modules, at least some of the processing modules including an operator input/output interface for receiving operator input from an operator input device and operator display output on an operator display device. The console terminal arrangement facilitates management of all of the processing modules by a single operator from a single location. The arrangement includes a console terminal and a plurality of processing module interfaces interconnected by a network. The console terminal includes an operator input device and an operator display device, and generates operator input messages including processing module management information generated by the operator input device in response to inputs provided by an operator and an address identifying one of the processing modules to be managed by the console terminal.Type: GrantFiled: October 20, 1995Date of Patent: December 2, 1997Assignee: Stratus Computer, Inc.Inventors: John D. Service, Walter A. Jones, Jr., Richard Urmston, Arthur J. Beaverson, Charles J. Horvath, Matthew A. Trask, John T. Vachon, Jeffrey D. Carter