Patents by Inventor Kota Asaka

Kota Asaka 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: 9912116
    Abstract: A burst optical signal transmission device which includes a light source for generating and outputting burst signal light, a light source driving circuit for outputting, to the light source, a driving signal for switching between an output time and a stop time of the burst signal light, based on a burst control signal, and a pre-emphasis circuit for outputting a pre-emphasis control signal for superimposing an additional signal for charging a capacitor included in the light source, onto the driving signal, at a timing in the vicinity of the beginning of the burst control signal.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: March 6, 2018
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Kota Asaka, Katsuhisa Taguchi
  • Publication number: 20170237232
    Abstract: A burst optical signal transmission device which includes a light source for generating and outputting burst signal light, a light source driving circuit for outputting, to the light source, a driving signal for switching between an output time and a stop time of the burst signal light, based on a burst control signal, and a pre-emphasis circuit for outputting a pre-emphasis control signal for superimposing an additional signal for charging a capacitor included in the light source, onto the driving signal, at a timing in the vicinity of the beginning of the burst control signal.
    Type: Application
    Filed: October 26, 2015
    Publication date: August 17, 2017
    Inventors: Kota ASAKA, Katsuhisa TAGUCHI
  • Publication number: 20160127045
    Abstract: A bias point of an external modulator is set to different values according to on and off of a burst control signal and an optical source is driven continuously in a burst optical signal transmission device. The burst optical signal transmission device avoid generation of transient fluctuation of a wavelength and a light amount at the time of burst signal rising.
    Type: Application
    Filed: June 24, 2014
    Publication date: May 5, 2016
    Inventors: Kota ASAKA, Katsuhisa TAGUCHI, Hirotaka NAKAMURA
  • Publication number: 20110170832
    Abstract: An optical transceiver module that is capable of being inserted into and removed from a cage includes a housing that houses a photoelectric conversion element, the housing having a guiding section formed along a front-rear direction, an operating lever that has an operating section and a lever-side contact section, the operating lever being attached to the housing in a rotatable manner about an axis of rotation; and a slider that has a wedge section that engages with a latching section provided to the cage, and a slider-side contact section that comes into contact with the lever-side contact section, the slider being guided in the front-rear direction by the guiding section, the lever-side contact section being located opposite the operating section with respect to the axis of rotation, and as the operating section is pushed rearward, the lever-side contact section pushes the slider-side contact section forward and the slider moves forward to a position where the wedge section is unlatched from the latching s
    Type: Application
    Filed: January 4, 2011
    Publication date: July 14, 2011
    Applicants: Fujikura Ltd., Nippon Telegraph and Telephone Corporation, NTT Electronics Corporation
    Inventors: Sawako Yamai, Susumu Okabe, Tsuyoshi Ito, Kota Asaka, Koji Kitahara, Toshio Ishikawa