Patents by Inventor Takuya Tsuchikawa

Takuya Tsuchikawa 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).

  • Illumination device
    Patent number: 8830067
    Abstract: The illumination device disclosed in the present specification has a light source, a touchless sensor for detecting proximity and movement of an object without contact, and a control unit for controlling the driving of the light source on the basis of an output of the touchless sensor.
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: September 9, 2014
    Assignee: Rohm Co., Ltd.
    Inventors: Masaru Igaki, Hideharu Osawa, Takuya Tsuchikawa
  • Calculation device, movement detection device, and electronic instrument
    Patent number: 8675008
    Abstract: The calculation device (36) according to the present invention receives a plurality of reflected light intensity information for indicating the intensity of each reflected light which reaches a single light receiver via a reflecting object, the reflected light having been emitted in sequence from a plurality of light emitters (31 through 33) provided in mutually different positions, computes a phase difference of an intensity variation which occurs among the reflected light, and determines a movement of the reflecting object on the basis of the calculation result.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: March 18, 2014
    Assignee: Rohm Co., Ltd.
    Inventors: Takuya Tsuchikawa, Yoshitsugu Uedaira, Yuichiro Nakata, Junji Fujino
  • ILLUMINATION DEVICE
    Publication number: 20120019165
    Abstract: The illumination device disclosed in the present specification has a light source, a touchless sensor for detecting proximity and movement of an object without contact, and a control unit for controlling the driving of the light source on the basis of an output of the touchless sensor.
    Type: Application
    Filed: July 21, 2011
    Publication date: January 26, 2012
    Applicant: ROHM CO., LTD.
    Inventors: Masaru Igaki, Hideharu Osawa, Takuya Tsuchikawa
  • CALCULATION DEVICE, MOVEMENT DETECTION DEVICE, AND ELECTRONIC INSTRUMENT
    Publication number: 20110254864
    Abstract: The calculation device (36) according to the present invention receives a plurality of reflected light intensity information for indicating the intensity of each reflected light which reaches a single light receiver via a reflecting object, the reflected light having been emitted in sequence from a plurality of light emitters (31 through 33) provided in mutually different positions, computes a phase difference of an intensity variation which occurs among the reflected light, and determines a movement of the reflecting object on the basis of the calculation result.
    Type: Application
    Filed: April 14, 2011
    Publication date: October 20, 2011
    Applicant: ROHM CO., LTD.
    Inventors: Takuya Tsuchikawa, Yoshitsugu Uedaira, Yuichiro Nakata, Junji Fujino