Patents by Inventor Seizou Furubeppu

Seizou Furubeppu 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).

  • Semiconductor merged logic and memory capable of preventing an increase in an abnormal current during power-up
    Patent number: 6418075
    Abstract: A semiconductor integrated circuit in which a logic and a memory are merged, includes a voltage generation unit for generating two or more internal power supply voltages based on two or more external power supply voltages supplied from outside the voltage generation unit with different timings and for furnishing the plurality of internal power supply voltages to the memory. The voltage generation unit includes a standby unit with a small current-feed ability that is always activated, for generating the plurality of internal power supply voltages, and an active unit with a large current-feed ability that is activated as needed, for generating the plurality of internal power supply voltages. An activation control unit prevents the active unit from being activated until all of the plurality of external power supply voltages rise.
    Type: Grant
    Filed: January 16, 2001
    Date of Patent: July 9, 2002
    Assignees: Mitsubishi Denki Kabushiki Kaisha, Mitsubishi Electric Engineering Company Limited
    Inventors: Hiroki Shimano, Kazutami Arimoto, Yasuhiro Ishizuka, Seizou Furubeppu, Hiroki Sugano
  • Semiconductor integrated circuit
    Publication number: 20020008547
    Abstract: A semiconductor integrated circuit in which a logic and a memory are merged, includes a voltage generation unit for generating two or more internal power supply voltages based on two or more external power supply voltages supplied from outside the voltage generation unit with different timings and for furnishing the plurality of internal power supply voltages to the memory. The voltage generation unit includes a standby unit with a small current-feed ability that is always activated, for generating the plurality of internal power supply voltages, and an active unit with a large current-feed ability that is activated as needed, for generating the plurality of internal power supply voltages. An activation control unit prevents the active unit from being activated until all of the plurality of external power supply voltages rise.
    Type: Application
    Filed: January 16, 2001
    Publication date: January 24, 2002
    Inventors: Hiroki Shimano, Kazutami Arimoto, Yasuhiro Ishizuka, Seizou Furubeppu, Hiroki Sugano