Patents by Inventor Kunio Uchiyama

Kunio Uchiyama 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).

  • Content addressable memory having dual access modes
    Patent number: 4646271
    Abstract: In a memory device having a content addressable memory array and a random access memory array, the word coincidence lines and word selection lines of the content addressable memory array are connected to the word selection lines of the corresponding words of the random access memory array via a selection circuit, access is made to the random access memory array on the basis of the result of association of the content addressable memory array when the selection circuit selects the word coincidence lines, and access is made to the memory device as a whole as a random access memory array when the selection circuit selects the word selection lines.
    Type: Grant
    Filed: December 19, 1984
    Date of Patent: February 24, 1987
    Assignee: Hitachi, Ltd.
    Inventors: Kunio Uchiyama, Tadahiko Nishimukai