Patents by Inventor Wallace A. Ritchie

Wallace A. Ritchie 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: 7257528
    Abstract: A method and apparatus for inputting Chinese character text into a machine such as a word processor or personal computer. The system consists of an apparatus which forms a closed feedback loop with the operator. The operator supplies stroke selections and other data to the apparatus which presents character selection information in response to the user's input. As a consequence of the feedback provided to the operator and subsequent actions by the operator, the desired Chinese text is produced with significant improvements in speed and ease.
    Type: Grant
    Filed: February 13, 1998
    Date of Patent: August 14, 2007
    Assignee: Zi Corporation of Canada, Inc.
    Inventors: Wallace A. Ritchie, Samuel Pun, Weigen Qiu
  • Patent number: 4829421
    Abstract: A system for transferring data from a data source such as a host computer to a data utilization device such as a remote high-speed line printer comprises a transmitter, communications circuit and receiver. The transmitter has a central processor which controls the transfer of data from an input section via a one line buffer to a communications storage buffer. The rate of transfer of data from the one line buffer is regulated by the available storage capacity of the communications storage buffer, with the higher the capacity the faster the rate of transfer.
    Type: Grant
    Filed: November 5, 1984
    Date of Patent: May 9, 1989
    Assignee: S. C. Yuter, J.S.D.
    Inventor: Wallace A. Ritchie