Patents by Inventor Wen-Tzer T. Chen

Wen-Tzer T. Chen 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: 5548735
    Abstract: A system and method for asynchronously managing the issuance of program I/O store instructions from a high speed central processor to a multiplicity of relatively lower speed I/O adapter devices. An interface between the central processor and the I/O adapter devices includes a program I/O store queue, a state machine, and a token pool related in count to the concurrent processing capabilities of I/O controllers. The interface queue includes information for uniquely identifying program I/O store instructions by adapter device destination and user application program to manage error recovery. As preferably implemented, the interface system and method also distinctly manages program I/O instructions requiring synchronous execution, such as program I/O load instructions.
    Type: Grant
    Filed: September 15, 1993
    Date of Patent: August 20, 1996
    Assignee: International Business Machines Corporation
    Inventors: Wen-Tzer T. Chen, Steven M. Thurber, Gary Y. Tsao