Patents by Inventor Toshikazu Okawa

Toshikazu Okawa 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).

  • Test apparatus and test method
    Patent number: 8299935
    Abstract: A test apparatus comprising a plurality of test units that test a device under test; a plurality of housing sections that respectively house the test units therein; a plurality of opening/closing sections that are disposed respectively in the housing sections and that expose the test units to the outside or isolate the test units from the outside; and a control section that independently controls whether each of the opening/closing sections is allowed to be opened. The control section may allow test units that are not supplied with power to be exposed to the outside. For at least one of (i) a period during which one of the test units is performing a predetermined operation, (ii) a predetermined period before the period during which one of the test units is performing the predetermined operation, and (iii) a predetermined period after the period during which one of the test units is performing the predetermined operation, the control section may prohibit other test units from being exposed to the outside.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: October 30, 2012
    Assignee: Advantest Corporation
    Inventors: Toshiyuki Kiyokawa, Toshikazu Okawa
  • TEST APPARATUS AND TEST METHOD
    Publication number: 20110298630
    Abstract: A test apparatus comprising a plurality of test units that test a device under test; a plurality of housing sections that respectively house the test units therein; a plurality of opening/closing sections that are disposed respectively in the housing sections and that expose the test units to the outside or isolate the test units from the outside; and a control section that independently controls whether each of the opening/closing sections is allowed to be opened. The control section may allow test units that are not supplied with power to be exposed to the outside. For at least one of (i) a period during which one of the test units is performing a predetermined operation, (ii) a predetermined period before the period during which one of the test units is performing the predetermined operation, and (iii) a predetermined period after the period during which one of the test units is performing the predetermined operation, the control section may prohibit other test units from being exposed to the outside.
    Type: Application
    Filed: August 16, 2010
    Publication date: December 8, 2011
    Applicant: ADVANTEST CORPORATION
    Inventors: Toshiyuki KIYOKAWA, Toshikazu OKAWA