Patents by Inventor Tadahiro Omata

Tadahiro Omata 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: 7242222
    Abstract: An output circuit has an output transistor, or a complementary pair of output transistors, that generate a bi-level voltage signal with a high output level and a low output level. The signals applied to the gates of the output transistors have high and low levels that are more narrowly separated than are the output high and low levels. For example, one gate signal may swing between the output high level and an intermediate level, and another gate signal may swing between the output low level and the same or a different intermediate level. The relatively narrow voltage swing reduces current consumption, and the intermediate level or levels can be adjusted to adjust the rise time and fall time of the output signal.
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: July 10, 2007
    Assignee: Oki Electric Industry Co., Ltd.
    Inventor: Tadahiro Omata
  • Publication number: 20060066353
    Abstract: An output circuit has an output transistor, or a complementary pair of output transistors, that generate a bi-level voltage signal with a high output level and a low output level. The signals applied to the gates of the output transistors have high and low levels that are more narrowly separated than are the output high and low levels. For example, one gate signal may swing between the output high level and an intermediate level, and another gate signal may swing between the output low level and the same or a different intermediate level. The relatively narrow voltage swing reduces current consumption, and the intermediate level or levels can be adjusted to adjust the rise time and fall time of the output signal.
    Type: Application
    Filed: June 15, 2005
    Publication date: March 30, 2006
    Applicant: Oki Electric Industry Co., Ltd.
    Inventor: Tadahiro Omata
  • Publication number: 20030081482
    Abstract: A sense amplifier for amplifying the potential difference between paired bit lines has a first transistor having the drain thereof connected to a bit line BL and the gate thereof connected to a bit line/BL, a second transistor having the drain thereof connected to the bit line/BL and the gate thereof connected to the bit line BL, and a third transistor and a fourth transistor provided in association with the first and second transistors, an identical sense amplifier actuating signal being applied to the gates thereof.
    Type: Application
    Filed: May 24, 2000
    Publication date: May 1, 2003
    Inventors: Tadahiro Omata, Hidenori Uehara, Yuki Hashimoto, Shinya Takahashi
  • Publication number: 20010026489
    Abstract: A sense amplifier for amplifying the potential difference between paired bit lines has a first transistor having the drain thereof connected to a bit line BL and the gate thereof connected to a bit line /BL, a second transistor having the drain thereof connected to the bit line /BL and the gate thereof connected to the bit line BL, and a third transistor and a fourth transistor provided in association with the first and second transistors, an identical sense amplifier actuating signal being applied to the gates thereof.
    Type: Application
    Filed: June 6, 2001
    Publication date: October 4, 2001
    Inventors: Tadahiro Omata, Hidenori Uehara, Yuki Hashimoto, Shinya Takahashi
  • Patent number: 6091095
    Abstract: A sense amplifier for amplifying the potential difference between paired bit lines has a first transistor having the drain thereof connected to a bit line BL and the gate thereof connected to a bit line /BL, a second transistor having the drain thereof connected to the bit line /BL and the gate thereof connected to the bit line BL, and a third transistor and a fourth transistor provided in association with the first and second transistors, an identical sense amplifier actuating signal being applied to the gates thereof.
    Type: Grant
    Filed: July 28, 1999
    Date of Patent: July 18, 2000
    Assignee: Oki Electric Industry Co., Ltd.
    Inventors: Tadahiro Omata, Hidenori Uehara, Yuki Hashimoto, Shinya Takahashi