Patents by Inventor Yeong-Chang L. Lien

Yeong-Chang L. Lien 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: 5179700
    Abstract: An interactive computer system for converting user interface presentations from a first application specified format to a second user specified format. The system accepts application program output designed to be displayed on a target type of computer system terminal and, converts the display to a user specified form prior to display. Through conversion apparatus and process the user may specify a customized format for presentation of the data from the application program to take advantage of the capabilities of a particular display device employed by that user. The system analyses the application program output, and converts the output to a form required by the customized interface and display the resulting output on the user display device. The system is able to accept data input and commands from the user display device, convert them into a form required by the application program and transmit that input or command to the application program.
    Type: Grant
    Filed: July 18, 1990
    Date of Patent: January 12, 1993
    Assignee: International Business Machines Corporation
    Inventors: Toru Aihara, Masanobu Ogata, Takashi Kurosawa, Yeong-Chang L. Lien
  • Patent number: 4879551
    Abstract: A cross-point switching array in which each cross-point of the array is controlled by the output of a first memory. Each first memory is associated with a second memory. The second memories can be sequentially set by a single controller while the cross-point connections are maintained according to the first memories. The contents of all second memories are concurrently loaded into the associated first memories to simultaneously reconfigure the cross-point array.
    Type: Grant
    Filed: April 26, 1985
    Date of Patent: November 7, 1989
    Assignee: International Business Machines Corporation
    Inventors: Christos J. Georgiou, Yeong-Chang L. Lien, Kiyoshi Maruyama
  • Patent number: 4706150
    Abstract: A protocol for a switching system that establishes multiple parallel paths between users through multiple autonomous switching planes by having a user desiring connection to issue connection requests to each of the switching planes. According to the invention, the user monitors the number of connections that have been successfully completed and if only some of the connections have been completed, because of conflicting requests, it follows a conflict protocol to issue retry requests to the planes on which the connection request was unsuccessful. Each switching plane follows the conflict protocol to respond to the retry request by disconnecting existing connections and completing at most one retried connection request.
    Type: Grant
    Filed: November 21, 1986
    Date of Patent: November 10, 1987
    Assignee: International Business Machines Corporation
    Inventors: Gerald Lebizay, Yeong-Chang L. Lien, Philip S. Yu
  • Patent number: 4679190
    Abstract: A method of switching synchronous and asynchronous data packets through a multi-stage interconnection network (MIN), so as to insure that packets with the highest assignable priority level will never be blocked at any stage of the network. More specifically, this invention relates to a method of switching voice and data packets over the MIN wherein each of the address bits in each packet determine the connection to be established at each particular stage in the network and wherein each packet has therein a priority level. In each time slot of a frame, the priority level of the packets stored in a particular originating adapter are compared and the packet with the highest priority level in each adapter is forwarded through the MIN and routed through the MIN as described above. Also, at each subswitch at each stage of the MIN, if two or more packets request the same subswitch output, only the packet with the higher priority is forwarded to the subswitch output.
    Type: Grant
    Filed: April 28, 1986
    Date of Patent: July 7, 1987
    Assignee: International Business Machines Corporation
    Inventors: Daniel M. Dias, Manoj Kumar, Yeong-Chang L. Lien, Kiyoshi Maruyama