Patents by Inventor Hirohumi Wada

Hirohumi Wada 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).

  • Digital signal processor with memory having data shift function
    Patent number: 5047972
    Abstract: This invention relates to a digital signal processor equipped with a RAM having the functions of reading memory from a first address and outputting it to a predetermined bus and writing the memory into a second address designated in the same memory cycle in order to make product/sum calculation necessary for filter calculation.
    Type: Grant
    Filed: March 23, 1990
    Date of Patent: September 10, 1991
    Assignee: Hitachi, Ltd.
    Inventor: Hirohumi Wada
  • Digital signal processor
    Patent number: 4959815
    Abstract: This invention relates to a digital signal processor equipped with a RAM having the functions of reading memory from a first address and outputting it to a predetermined bus and writing the memory into the second address designated in the same memory cycle in order to make product/sum calculation necessary for filter calculation.
    Type: Grant
    Filed: April 21, 1988
    Date of Patent: September 25, 1990
    Assignee: Hitachi, Ltd.
    Inventor: Hirohumi Wada