Patents by Inventor Yonosuke Hara

Yonosuke Hara 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).

  • Lamp failure detecting device, method for setting lamp failure detecting device, light source failure detecting device, method for setting light source failure detecting device, and lamp assembly
    Patent number: 10849204
    Abstract: Each of a low beam lamp and a high beam lamp connected in series includes at least one light source. A lamp driving circuit is configured to supply current to each of the n lamps. A first voltage detecting circuit is configured to detect a first voltage that is a sum of voltages applied to each of the low beam lamp and the high beam lamp. A second voltage detecting circuit is configured to detect a second voltage that is applied to the high beam lamp. A processor is configured to obtain a difference between the first voltage and the second voltage, and to detect a failure in the low beam lamp based on comparison between the difference and a rewritable normal operation voltage of the low beam lamp.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: November 24, 2020
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventors: Yonosuke Hara, Takaaki Nakamura
  • LAMP FAILURE DETECTING DEVICE, METHOD FOR SETTING LAMP FAILURE DETECTING DEVICE, LIGHT SOURCE FAILURE DETECTING DEVICE, METHOD FOR SETTING LIGHT SOURCE FAILURE DETECTING DEVICE, AND LAMP ASSEMBLY
    Publication number: 20200178367
    Abstract: Each of a low beam lamp and a high beam lamp connected in series includes at least one light source. A lamp driving circuit is configured to supply current to each of the n lamps. A first voltage detecting circuit is configured to detect a first voltage that is a sum of voltages applied to each of the low beam lamp and the high beam lamp. A second voltage detecting circuit is configured to detect a second voltage that is applied to the high beam lamp. A processor is configured to obtain a difference between the first voltage and the second voltage, and to detect a failure in the low beam lamp based on comparison between the difference and a rewritable normal operation voltage of the low beam lamp.
    Type: Application
    Filed: November 27, 2019
    Publication date: June 4, 2020
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Yonosuke Hara, Takaaki Nakamura