Patents by Inventor Toshiaki Kirihara

Toshiaki Kirihara 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).

  • Sense amplifier threshold compensation
    Patent number: 6518827
    Abstract: A method and system are disclosed for adjusting the threshold in MOS devices, in particular for devices used in DRAM sense amplifiers. The effects of process and temperature variations on the threshold are compensated by a back-bias voltage. A comparison of an indicating voltage and a reference voltage is used to generate the back-bias voltage. The direction of back-bias voltage may be either in the backward, or in the forward bias direction.
    Type: Grant
    Filed: July 27, 2001
    Date of Patent: February 11, 2003
    Assignee: International Business Machines Corporation
    Inventors: John A. Fifield, Robert H. Dennard, Russell J. Houghton, Toshiaki Kirihara, Wing Luk
  • SENSE AMPLIFIER THRESHOLD COMPENSATION
    Publication number: 20030021161
    Abstract: A method and system are disclosed for adjusting the threshold in MOS devices, in particular for devices used in DRAM sense amplifiers. The effects of process and temperature variations on the threshold are compensated by a back-bias voltage. A comparison of an indicating voltage and a reference voltage is used to generate the back-bias voltage. The direction of back-bias voltage may be either in the backward, or in the forward bias direction.
    Type: Application
    Filed: July 27, 2001
    Publication date: January 30, 2003
    Inventors: John A. Fifield, Robert H. Dennard, Russell J. Houghton, Toshiaki Kirihara, Wing Luk