Patents by Inventor Kazuyoshi Okawa

Kazuyoshi 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).

  • Patent number: 7613960
    Abstract: There is provided a semiconductor test apparatus which uses a test processor to apply a test signal to a DUT having a semiconductor device within it to determine whether the memory is acceptable or not on the basis of a response signal, and uses a repair analysis computing unit to analyze the result of the test to determine how to replace a defective cell of the memory with a spare line. The repair analysis computing unit includes a fail memory which stores test results and a general-purpose repair analysis part which analyzes the test results in accordance with an MRA program and inserts and executes a user function of a user analysis program between units of analysis processing.
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: November 3, 2009
    Assignee: Advantest Corporation
    Inventors: Kazuyoshi Okawa, Junko Ogino, Masayuki Yoshinaga, Hajime Honda
  • Publication number: 20070265794
    Abstract: There is provided a semiconductor test apparatus which uses a test processor to apply a test signal to a DUT having a semiconductor device within it to determine whether the memory is acceptable or not on the basis of a response signal, and uses a repair analysis computing unit to analyze the result of the test to determine how to replace a defective cell of the memory with a spare line. The repair analysis computing unit includes a fail memory which stores test results and a general-purpose repair analysis part which analyzes the test results in accordance with an MRA program and inserts and executes a user function of a user analysis program between units of analysis processing.
    Type: Application
    Filed: February 18, 2004
    Publication date: November 15, 2007
    Applicant: Advantest Corporation
    Inventors: Kazuyoshi Okawa, Junko Ogino, Masayuki Yoshinaga, Hajime Honda
  • Patent number: 5021695
    Abstract: A linear motor car system including a horizontal conveyance path, a vertical conveyance path, and a curved conveyance path connected between the horizontal and vertical conveyance paths. A controller in the linear motor car system drives a carrier so that the cariier can ascend smoothly up the curved and vertical conveyance paths with the minimum driving energy and without accidentally falling back down the vertical path.
    Type: Grant
    Filed: May 19, 1989
    Date of Patent: June 4, 1991
    Assignee: Fujitsu Limited
    Inventors: Toshimasa Miyazaki, Yoji Uzawa, Kazuyoshi Okawa, Hiroshi Kawashima, Kazumasa Moriya, Yoshitaka Murakawa, Toshimitsu Kumagai, Akihiro Nakamura, Motohiko Itoh, Tomoyuki Kashiwazaki
  • Patent number: 4876966
    Abstract: A transport control system with linear motor drive applicable for cash transport in a bank. The system uses a main controller, a rail-path, a carrier adapted to be driven along the rail-path by linear motor drive, and a plurality of stator portions coupled to the rail-path to produce a driving force in association with the carrier. Each of the stator portions includes a stator controller for controlling the driving of the carrier. The stator controller controls the driving of the carrier passing the stator portion to which the stator controller belongs to cause the carrier to reach a destination stator portion.
    Type: Grant
    Filed: June 8, 1987
    Date of Patent: October 31, 1989
    Inventors: Kazuyoshi Okawa, Kazumasa Moriya, Tomoyuki Kashiwazaki, Hiroshi Kawashima, Yoshitaka Murakawa
  • Patent number: 4849664
    Abstract: A linear motor car system including a horizontal conveyance path, a vertical conveyance path, and a curved conveyance path connected between the horizontal and vertical conveyance paths. A controller in the linear motor car system drives a carrier so that the carrier can ascend smoothly up the curved and vertical conveyance paths with the minimum driving energy and without accidentally falling back down the vertical path.
    Type: Grant
    Filed: August 11, 1986
    Date of Patent: July 18, 1989
    Assignee: Fujitsu Limited
    Inventors: Toshimasa Miyazaki, Yoji Uzawa, Kazuyoshi Okawa, Hiroshi Kawashima, Kazumasa Moriya, Yoshitaka Murakawa, Toshimitsu Kumagai, Akihiro Nakamura, Motohiko Itoh, Tomoyuki Kashiwazaki
  • Patent number: 4721045
    Abstract: A transport control system with linear motor drive applicable for cash transport in a bank. The system uses a main controller, a rail-path, a carrier adapted to be driven along the rail-path by linear motor drive, and a plurality of stator portions coupled to the rail-path to produce a driving force in association with the carrier. Each of the stator portions includes a stator controller for controlling the driving of the carrier. The stator controller controls the driving of the carrier passing the stator portion to which the stator controller belongs to cause the carrier to reach a destination stator portion.
    Type: Grant
    Filed: March 5, 1985
    Date of Patent: January 26, 1988
    Assignee: Fujitsu Limited
    Inventors: Kazuyoshi Okawa, Kazumasa Moriya, Tomoyuki Kashiwazaki, Hiroshi Kawashima, Yoshitaka Murakawa