Patents by Inventor Shinichiro Oshima

Shinichiro Oshima 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).

  • Testing device comprising circuitry to calculate a correction value for calibrating channel loss
    Patent number: 10317503
    Abstract: According to one embodiment, a testing device includes a signal generator that generates a first signal output to a device under test, a channel selector provided after the signal generator and configured to select one of a plurality of channels, a signal receiver that receives the second signal supplied from the device under test, a correction value calculator that calculates a correction value for calibrating loss of a respective one of the channels, wherein the correction value calculator calculates a correction value for calibrating loss of a respective one of the channels included in the channel selector, based on a signal level received by the signal receiver via a loopback channel, when a calibration-level output state indicating a state where a signal level of the first signal generated by the signal generator reaches a predetermined transmission reference level of calibration is assumed.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: June 11, 2019
    Assignee: Anritsu Corporation
    Inventors: Koji Yamashita, Hirofumi Kanno, Toru Otani, Shinichiro Oshima
  • TESTING DEVICE AND ITS CALIBRATION METHOD
    Publication number: 20160077158
    Abstract: According to one embodiment, a testing device includes a signal generator that generates a first signal output to a device under test, a channel selector provided after the signal generator and configured to select one of a plurality of channels, a signal receiver that receives the second signal supplied from the device under test, a correction value calculator that calculates a correction value for calibrating loss of a respective one of the channels, wherein the correction value calculator calculates a correction value for calibrating loss of a respective one of the channels included in the channel selector, based on a signal level received by the signal receiver via a loopback channel, when a calibration-level output state indicating a state where a signal level of the first signal generated by the signal generator reaches a predetermined transmission reference level of calibration is assumed.
    Type: Application
    Filed: August 17, 2015
    Publication date: March 17, 2016
    Applicant: Anritsu Corporation
    Inventors: Koji Yamashita, Hirofumi Kanno, Toru Otani, Shinichiro Oshima