Patents by Inventor Stephen P. Cherniak

Stephen P. Cherniak 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: 10958727
    Abstract: A time server of a server time protocol (STP) facility of a coordinated timing network (CTN) receives a primary-reference-time (PRT) update, with the primary-reference-time update having been determined with reference to a time source, which includes a precision-time-protocol (PTP) source. The time server sets a primary reference time correction steering rate for the coordinated timing network based on receiving the primary-reference-time update, and broadcasts to one or more other servers of the coordinated timing network a PRT-correction-steering information block (PCSIB). The PRT-correction-steering information block includes a precision-time-protocol identifier for the time source used in determining the primary-reference-time update, and the primary-reference-time correction steering rate set by the time server.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: March 23, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Stephen R. Guendert, John S. Houston, Donald Crabtree, Stephen P. Cherniak, Paul Wojciak
  • Patent number: 10903924
    Abstract: A time server of a coordinated timing network (CTN) receives a command, including a primary-reference-time (PRT) source identifier identifying a time source in use for the server time protocol (STP) facility as a precision-time-protocol (PTP) time server. The time server obtains the primary-reference-time source identifier from the command, and distributes the primary-reference-time source identifier obtained from the command to one or more other servers of the coordinated timing network to facilitate processing within the coordinated timing network.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: January 26, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Stephen R. Guendert, John S. Houston, Donald Crabtree, Stephen P. Cherniak, Paul Wojciak
  • Publication number: 20200259897
    Abstract: A time server of a server time protocol (STP) facility of a coordinated timing network (CTN) receives a primary-reference-time (PRT) update, with the primary-reference-time update having been determined with reference to a time source, which includes a precision-time-protocol (PTP) source. The time server sets a primary reference time correction steering rate for the coordinated timing network based on receiving the primary-reference-time update, and broadcasts to one or more other servers of the coordinated timing network a PRT-correction-steering information block (PCSIB). The PRT-correction-steering information block includes a precision-time-protocol identifier for the time source used in determining the primary-reference-time update, and the primary-reference-time correction steering rate set by the time server.
    Type: Application
    Filed: February 7, 2019
    Publication date: August 13, 2020
    Inventors: Stephen R. GUENDERT, John S. HOUSTON, Donald CRABTREE, Stephen P. CHERNIAK, Paul WOJCIAK
  • Publication number: 20200259577
    Abstract: A time server of a coordinated timing network (CTN) receives a command, including a primary-reference-time (PRT) source identifier identifying a time source in use for the server time protocol (STP) facility as a precision-time-protocol (PTP) time server. The time server obtains the primary-reference-time source identifier from the command, and distributes the primary-reference-time source identifier obtained from the command to one or more other servers of the coordinated timing network to facilitate processing within the coordinated timing network.
    Type: Application
    Filed: February 7, 2019
    Publication date: August 13, 2020
    Inventors: Stephen R. GUENDERT, John S. HOUSTON, Donald CRABTREE, Stephen P. CHERNIAK, Paul WOJCIAK
  • Patent number: 9934113
    Abstract: An enhanced console assisted recovery capability provides an efficient technique for communicating the failure of a primary time server to the backup time server in order to provide fast failure recovery of a synchronized timing network with the intent of avoiding a complete network outage. The primary time server efficiently notifies the backup time server that the primary time server is about to become unavailable. The backup time server can then begin an immediate takeover of time serving to the synchronized network.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: April 3, 2018
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Stephen P. Cherniak, Donald Crabtree, John S. Houston
  • Publication number: 20170097874
    Abstract: An enhanced console assisted recovery capability provides an efficient technique for communicating the failure of a primary time server to the backup time server in order to provide fast failure recovery of a synchronized timing network with the intent of avoiding a complete network outage. The primary time server efficiently notifies the backup time server that the primary time server is about to become unavailable. The backup time server can then begin an immediate takeover of time serving to the synchronized network.
    Type: Application
    Filed: October 5, 2015
    Publication date: April 6, 2017
    Inventors: Stephen P. Cherniak, Donald Crabtree, John S. Houston
  • Patent number: 7958384
    Abstract: A server of a network of servers determines that its power source is failing. In response, the server communicates to one or more other servers of this network that it is leaving the network. This communication is powered by another power source.
    Type: Grant
    Filed: August 14, 2009
    Date of Patent: June 7, 2011
    Assignee: International Business Machines Corporation
    Inventors: Scott M. Carlson, Stephen P. Cherniak, Donald Crabtree, Dennis J. Dahlen, Noshir R. Dhondy, Denise M. Sevigny, Judith A. Wierbowski
  • Patent number: 7873862
    Abstract: A primary time server of a Coordinated Timing Network remains as current time server, even if time code information of the primary time server is unavailable. The primary time server receives the necessary or desired timing information from a secondary time server and uses that information to maintain time synchronization within the Coordinated Timing Network.
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: January 18, 2011
    Assignee: International Business Machines Corporation
    Inventors: Scott M. Carlson, Stephen P. Cherniak, Donald Crabtree, Dennis J. Dahlen, Noshir R. Dhondy, Michel H. T. Hack, Denise M. Sevigny, Judith A. Wierbowski
  • Publication number: 20100100761
    Abstract: A primary time server of a Coordinated Timing Network remains as current time server, even if time code information of the primary time server is unavailable. The primary time server receives the necessary or desired timing information from a secondary time server and uses that information to maintain time synchronization within the Coordinated Timing Network.
    Type: Application
    Filed: October 21, 2008
    Publication date: April 22, 2010
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Scott M. Carlson, Stephen P. Cherniak, Donald Crabtree, Dennis J. Dahlen, Noshir R. Dhondy, Michel H. T. Hack, Denise M. Sevigny, Judith A. Wierbowski
  • Publication number: 20100100762
    Abstract: A server of a network of servers determines that its power source is failing. In response, the server communicates to one or more other servers of this network that it is leaving the network. This communication is powered by another power source.
    Type: Application
    Filed: August 14, 2009
    Publication date: April 22, 2010
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Scott M. Carlson, Stephen P. Cherniak, Donald Crabtree, Dennis J. Dahlen, Noshir R. Dhondy, Michel H.T. Hack, Denise M. Sevigny, Judith A. Wierbowski