Patents by Inventor Toru Ibane

Toru Ibane 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: 7982485
    Abstract: It is possible to provide a semiconductor test device capable improving the test efficiency. The semiconductor test device includes: a driver (14) which generates a driver signal outputted to a device under test; a variable delay circuit (12) provided at the preceding stage of the driver (14); a register (16) for setting an output level of a driver signal outputted from the driver (14); a correction value memory (26) which outputs correction data corresponding to a shift of the rise timing or the fall timing of the driver signal when the output level is modified from a predetermined value serving as a reference value of the output level; an amplitude correction value register (28) which sets a delay amount by a variable delay circuit (12) by considering correction data which is outputted from the correction value memory (26); an adder circuit (30).
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: July 19, 2011
    Assignee: Advantest Corporation
    Inventor: Toru Ibane
  • Publication number: 20100001754
    Abstract: It is possible to provide a semiconductor test device capable improving the test efficiency. The semiconductor test device includes: a driver (14) which generates a driver signal outputted to a device under test; a variable delay circuit (12) provided at the preceding stage of the driver (14); a register (16) for setting an output level of a driver signal outputted from the driver (14); a correction value memory (26) which outputs correction data corresponding to a shift of the rise timing or the fall timing of the driver signal when the output level is modified from a predetermined value serving as a reference value of the output level; an amplitude correction value register (28) which sets a delay amount by a variable delay circuit (12) by considering correction data which is outputted from the correction value memory (26); an adder circuit (30).
    Type: Application
    Filed: September 25, 2007
    Publication date: January 7, 2010
    Applicant: ADVANTEST CORPORATION
    Inventor: Toru Ibane
  • Patent number: 7121132
    Abstract: A method for calibrating a semiconductor test instrument leading cost reduction, simplified work, and short working time. Drivers are related to comparators in one-to-one correspondence. A clock signal and a strobe signal have a one-to-one correspondence. The phase of either a clock signal or a strobe signal is adjusted with reference to the phase of the other signal. The relative phase difference between clock signals or between strobe signals are determined. The phases of the clock and strobe signals are adjusted with reference to the relative phase difference.
    Type: Grant
    Filed: February 11, 2006
    Date of Patent: October 17, 2006
    Assignee: Advantest Corporation
    Inventor: Toru Ibane
  • Patent number: 7111490
    Abstract: A method for calibrating a semiconductor test instrument leading cost reduction, simplified work, and short working time. Drivers are related to comparators in one-to-one correspondence. A clock signal and a strobe signal have a one-to-one correspondence. The phase of either a clock signal or a strobe signal is adjusted with reference to the phase of the other signal. The relative phase difference between clock signals or between strobe signals are determined. The phases of the clock and strobe signals are adjusted with reference to the relative phase difference.
    Type: Grant
    Filed: February 11, 2006
    Date of Patent: September 26, 2006
    Assignee: Advantest Corporation
    Inventor: Toru Ibane
  • Patent number: 7107816
    Abstract: A method for calibrating a semiconductor test instrument leading cost reduction, simplified work, and short working time. Drivers are related to comparators in one-to-one correspondence. A clock signal and a strobe signal have a one-to-one correspondence. The phase of either a clock signal or a strobe signal is adjusted with reference to the phase of the other signal. The relative phase difference between clock signals or between strobe signals are determined. The phases of the clock and strobe signals are adjusted with reference to the relative phase difference.
    Type: Grant
    Filed: February 11, 2006
    Date of Patent: September 19, 2006
    Assignee: Advantest Corporation
    Inventor: Toru Ibane
  • Patent number: 7107817
    Abstract: A method for calibrating a semiconductor test instrument leading cost reduction, simplified work, and short working time. Drivers are related to comparators in one-to-one correspondence. A clock signal and a strobe signal have a one-to-one correspondence. The phase of either a clock signal or a strobe signal is adjusted with reference to the phase of the other signal. The relative phase difference between clock signals or between strobe signals are determined. The phases of the clock and strobe signals are adjusted with reference to the relative phase difference.
    Type: Grant
    Filed: February 11, 2006
    Date of Patent: September 19, 2006
    Assignee: Advantest Corporation
    Inventor: Toru Ibane
  • Patent number: 7107815
    Abstract: A method for calibrating a semiconductor test instrument leading cost reduction, simplified work, and short working time. Drivers are related to comparators in one-to-one correspondence. A clock signal and a strobe signal have a one-to-one correspondence. The phase of either a clock signal or a strobe signal is adjusted with reference to the phase of the other signal. The relative phase difference between clock signals or between strobe signals are determined. The phases of the clock and strobe signals are adjusted with reference to the relative phase difference.
    Type: Grant
    Filed: February 11, 2006
    Date of Patent: September 19, 2006
    Assignee: Advantest Corporation
    Inventor: Toru Ibane
  • Publication number: 20060123881
    Abstract: A method for calibrating a semiconductor test instrument leading cost reduction, simplified work, and short working time. Drivers are related to comparators in one-to-one correspondence. A clock signal and a strobe signal have a one-to-one correspondence. The phase of either a clock signal or a strobe signal is adjusted with reference to the phase of the other signal. The relative phase difference between clock signals or between strobe signals are determined. The phases of the clock and strobe signals are adjusted with reference to the relative phase difference.
    Type: Application
    Filed: February 11, 2006
    Publication date: June 15, 2006
    Inventor: Toru Ibane
  • Publication number: 20060123879
    Abstract: A method for calibrating a semiconductor test instrument leading cost reduction, simplified work, and short working time. Drivers are related to comparators in one-to-one correspondence. A clock signal and a strobe signal have a one-to-one correspondence. The phase of either a clock signal or a strobe signal is adjusted with reference to the phase of the other signal. The relative phase difference between clock signals or between strobe signals are determined. The phases of the clock and strobe signals are adjusted with reference to the relative phase difference.
    Type: Application
    Filed: February 11, 2006
    Publication date: June 15, 2006
    Inventor: Toru Ibane
  • Publication number: 20060123880
    Abstract: A method for calibrating a semiconductor test instrument leading cost reduction, simplified work, and short working time. Drivers are related to comparators in one-to-one correspondence. A clock signal and a strobe signal have a one-to-one correspondence. The phase of either a clock signal or a strobe signal is adjusted with reference to the phase of the other signal. The relative phase difference between clock signals or between strobe signals are determined. The phases of the clock and strobe signals are adjusted with reference to the relative phase difference.
    Type: Application
    Filed: February 11, 2006
    Publication date: June 15, 2006
    Inventor: Toru Ibane
  • Publication number: 20060123882
    Abstract: A method for calibrating a semiconductor test instrument leading cost reduction, simplified work, and short working time. Drivers are related to comparators in one-to-one correspondence. A clock signal and a strobe signal have a one-to-one correspondence. The phase of either a clock signal or a strobe signal is adjusted with reference to the phase of the other signal. The relative phase difference between clock signals or between strobe signals are determined. The phases of the clock and strobe signals are adjusted with reference to the relative phase difference.
    Type: Application
    Filed: February 11, 2006
    Publication date: June 15, 2006
    Inventor: Toru Ibane
  • Publication number: 20060123878
    Abstract: A method for calibrating a semiconductor test instrument leading cost reduction, simplified work, and short working time. Drivers are related to comparators in one-to-one correspondence. A clock signal and a strobe signal have a one-to-one correspondence. The phase of either a clock signal or a strobe signal is adjusted with reference to the phase of the other signal. The relative phase difference between clock signals or between strobe signals are determined. The phases of the clock and strobe signals are adjusted with reference to the relative phase difference.
    Type: Application
    Filed: February 11, 2006
    Publication date: June 15, 2006
    Inventor: Toru Ibane
  • Patent number: 7043959
    Abstract: A method for calibrating a semiconductor test instrument leading cost reduction, simplified work, and short working time. Drivers are related to comparators in one-to-one correspondence. A clock signal and a strobe signal have a one-to-one correspondence. The phase of either a clock signal or a strobe signal is adjusted with reference to the phase of the other signal. The relative phase difference between clock signals or between strobe signals are determined. The phases of the clock and strobe signals are adjusted with reference to the relative phase difference.
    Type: Grant
    Filed: June 6, 2002
    Date of Patent: May 16, 2006
    Assignee: Advantest Corporation
    Inventor: Toru Ibane
  • Publication number: 20040173003
    Abstract: A method for calibrating a semiconductor test instrument leading cost reduction, simplified work, and short working time. Drivers are related to comparators in one-to-one correspondence. A clock signal and a strobe signal have a one-to-one correspondence. The phase of either a clock signal or a strobe signal is adjusted with reference to the phase of the other signal. The relative phase difference between clock signals or between strobe signals are determined. The phases of the clock and strobe signals are adjusted with reference to the relative phase difference.
    Type: Application
    Filed: December 5, 2003
    Publication date: September 9, 2004
    Inventor: Toru Ibane