Patents by Inventor Kengo Miyazawa

Kengo Miyazawa 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: 6034912
    Abstract: A memory portion and a logic circuit portion of a semiconductor device are formed on a single semiconductor substrate in which a first logic circuit block and a second logic circuit block are formed in different areas and the second logic circuit is located between a pair of memory blocks. Data stored in the pair of memory blocks are transmitted to the second logic circuit block for processing via a memory peripheral circuit. A result of the data processing is transmitted to the first logic circuit block or an external device via an input/output circuit provided in the second logic circuit block. A clock signal entered at the center portion of the semiconductor chip is supplied to a plurality of first state clock distributing circuits equidistantly disposed from the center portion and then to a plurality of second stage clock distributing circuits at least equidistantly disposed from each of the first state clock distributing circuits.
    Type: Grant
    Filed: September 1, 1998
    Date of Patent: March 7, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Satoru Isomura, Atsushi Shimizu, Keiichi Higeta, Tohru Kobayashi, Takeo Yamada, Yuko Ito, Kengo Miyazawa, Kunihiko Yamaguchi
  • Patent number: 5898636
    Abstract: A semiconductor integrated circuit device having a memory portion and a logic circuit portion formed with a same semiconductor substrate comprising a first logic circuit block, a second logic circuit block disposed in an area different from an area in which the first logic circuit block is disposed, and a pair of memory blocks oppositely disposed so that the second logic circuit block comes in between. Data stored in the pair of memory blocks are transmitted to the second logic circuit block for processing via a memory peripheral circuit provided on the second logic circuit block. A result of the data processing is transmitted to the first logic circuit block or an external device via an input/output circuit provided in the second logic circuit block.
    Type: Grant
    Filed: June 7, 1994
    Date of Patent: April 27, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Satoru Isomura, Atsushi Shimizu, Keiichi Higeta, Tohru Kobayashi, Takeo Yamada, Yuko Ito, Kengo Miyazawa, Kunihiko Yamaguchi