Patents by Inventor Takao Saotome

Takao Saotome 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).

  • Publication number: 20040170044
    Abstract: There is provided a semiconductor integrated circuit device which has realized high speed operation, high integration density and highly efficient layout of the RAM macro, in which a memory array which is divided into four sections in the X and Y coordinates directions is disposed, a first input circuit for receiving a signal which requires optimization for a signal delay is disposed to the center of such four memory arrays, a second input circuit for receiving a data input and control signals thereof is disposed to the center of Y coordinate corresponding to the extending direction of the word line and a signal line for transferring an input signal from the external circuit of the RAM macro to the first and second input circuits is formed using an upper layer wiring for the wiring to form the memory array.
    Type: Application
    Filed: March 4, 2004
    Publication date: September 2, 2004
    Applicants: Renesas Technology Corporation, Hitachi ULSI Systems Co., Ltd.
    Inventors: Takao Saotome, Takeshi Suzuki, Hiroyuki Tanaka, Shigeru Nakahara, Keiichi Higeta
  • Patent number: 6727532
    Abstract: There is provided a semiconductor integrated circuit device which has realized high speed operation, high integration density and highly efficient layout of the RAM macro, in which a memory array which is divided into four sections in the X and Y coordinates directions is disposed, a first input circuit for receiving a signal which requires optimization for a signal delay is disposed to the center of such four memory arrays, a second input circuit for receiving a data input and control signals thereof is disposed to the center of Y coordinate corresponding to the extending direction of the word line and a signal line for transferring an input signal from the external circuit of the RAM macro to the first and second input circuits is formed using an upper layer wiring for the wiring to form the memory array.
    Type: Grant
    Filed: June 24, 2002
    Date of Patent: April 27, 2004
    Assignees: Renesas Technology Corp., Hitachi ULSI Systems Co., Ltd.
    Inventors: Takao Saotome, Takeshi Suzuki, Hiroyuki Tanaka, Shigeru Nakahara, Keiichi Higeta
  • Publication number: 20030030073
    Abstract: There is provided a semiconductor integrated circuit device which has realized high speed operation, high integration density and highly efficient layout of the RAM macro, in which a memory array which is divided into four sections in the X and Y coordinates directions is disposed, a first input circuit for receiving a signal which requires optimization for a signal delay is disposed to the center of such four memory arrays, a second input circuit for receiving a data input and control signals thereof is disposed to the center of Y coordinate corresponding to the extending direction of the word line and a signal line for transferring an input signal from the external circuit of the RAM macro to the first and second input circuits is formed using an upper layer wiring for the wiring to form the memory array.
    Type: Application
    Filed: June 24, 2002
    Publication date: February 13, 2003
    Applicant: Hitachi, Ltd.
    Inventors: Takao Saotome, Takeshi Suzuki, Hiroyuki Tanaka, Shigeru Nakahara, Keiichi Higeta