Patents by Inventor Ughochukwu C. Njoku

Ughochukwu C. Njoku 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).

  • Early termination of an I/O operation in an I/O processing system
    Patent number: 8176222
    Abstract: A computer program product, apparatus, and method for handling early termination of an I/O operation at a channel subsystem in an I/O processing system are provided. The computer program product includes a tangible storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method. The method includes receiving a request to terminate an I/O operation, and transmitting an abort command to a control unit in communication with the channel subsystem in response to receiving the request to terminate the I/O operation. The method also includes transmitting a purge path command to purge a path associated with the I/O operation, where the purge path command includes an error code identifying the request to terminate the I/O operation.
    Type: Grant
    Filed: February 14, 2008
    Date of Patent: May 8, 2012
    Assignee: International Business Machines Corporation
    Inventors: Mark P. Bendyk, Scott M. Carlson, Daniel F. Casper, John R. Flanagan, Catherine C. Huang, Matthew J. Kalos, Ughochukwu C. Njoku, Louis W. Ricci, Harry M. Yudenfriend
  • EARLY TERMINATION OF AN I/O OPERATION IN AN I/O PROCESSING SYSTEM
    Publication number: 20090210580
    Abstract: A computer program product, apparatus, and method for handling early termination of an I/O operation at a channel subsystem in an I/O processing system are provided. The computer program product includes a tangible storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method. The method includes receiving a request to terminate an I/O operation, and transmitting an abort command to a control unit in communication with the channel subsystem in response to receiving the request to terminate the I/O operation. The method also includes transmitting a purge path command to purge a path associated with the I/O operation, where the purge path command includes an error code identifying the request to terminate the I/O operation.
    Type: Application
    Filed: February 14, 2008
    Publication date: August 20, 2009
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Mark P. Bendyk, Scott M. Carlson, Daniel F. Casper, John R. Flanagan, Catherine C. Huang, Matthew J. Kalos, Ughochukwu C. Njoku, Louis W. Ricci, Harry M. Yudenfriend