Patents by Inventor Yujiro Eto

Yujiro Eto 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).

  • System, method, and program for distributing live video
    Patent number: 11115684
    Abstract: A video distribution server according to an embodiment provides a live video distribution service for distributing and viewing live video to a user via a user terminal. This server determines the ranking of distributors on the basis of live video distribution performance, sets a base reward quantity for distributors on the basis of the determined ranking, and gives distributors rewards in a quantity based on the distribution duration of the live video and the base reward quantity, so even if a distributor is a novice, he can obtain a reward in a quantity based on the distribution duration and the base reward quantity by continuing to distribute live video.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: September 7, 2021
    Assignee: DeNA CO., LTD.
    Inventors: Kazuto Shibata, Yasunori Beppu, Seiichiro Sumiyoshi, Yujiro Eto, Koji Murata
  • SYSTEM, METHOD, AND PROGRAM FOR DISTRIBUTING LIVE VIDEO
    Publication number: 20200029103
    Abstract: A video distribution server according to an embodiment provides a live video distribution service for distributing and viewing live video to a user via a user terminal. This server determines the ranking of distributors on the basis of live video distribution performance, sets a base reward quantity for distributors on the basis of the determined ranking, and gives distributors rewards in a quantity based on the distribution duration of the live video and the base reward quantity, so even if a distributor is a novice, he can obtain a reward in a quantity based on the distribution duration and the base reward quantity by continuing to distribute live video.
    Type: Application
    Filed: July 16, 2019
    Publication date: January 23, 2020
    Inventors: Kazuto SHIBATA, Yasunori BEPPU, Seiichiro SUMIYOSHI, Yujiro ETO, Koji MURATA
  • Quantum entanglement generating system and method, and quantum entanglement generating and detecting system and method
    Patent number: 8228507
    Abstract: A quantum entanglement generating system includes: a laser light source for producing a light beam of light frequency 2f0; a ring interferometer comprising a beam splitter into which the light beam of light frequency 2f0 is incident and a plurality of mirrors, the beam splitter and the mirrors forming an optical path in the form of a ring; a parametric amplifier inserted in the optical path of the ring interferometer for producing a beam of light of light frequency f0 upon receiving the light beam of light frequency 2f0 incident into the optical parametric amplifier; and a dispersive medium inserted in the optical path of the ring interferometer for varying relative optical path length for the light beam of light frequency 2f0 and the light beam of light frequency f0.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: July 24, 2012
    Assignees: Japan Science and Technology Agency, The Gakushuin School Corporation
    Inventors: Takuya Hirano, Yujiro Eto
  • QUANTUM ENTANGLEMENT GENERATING SYSTEM AND METHOD, AND QUANTUM ENTANGLEMENT GENERATING AND DETECTING SYSTEM AND METHOD
    Publication number: 20110032532
    Abstract: A quantum entanglement generating system (30) comprises: a laser light source (1) for producing a light beam of light frequency 2f0; a ring interferometer (20) comprising a beam splitter (4) into which the light beam of light frequency 2f0 is incident and a plurality of mirrors (5, 7, 8), the beam splitter and the mirrors forming an optical path in the form of a ring; a parametric amplifier (6) inserted in the optical path of the ring interferometer for producing a beam of light of light frequency f0 upon receiving the light beam of light frequency 2f0 incident into the optical parametric amplifier; and a dispersive medium (9) inserted in the optical path of the ring interferometer for varying relative optical path length for the light beam of light frequency 2f0 and the light beam of light frequency f0, whereby two light beams of light frequency 2f0 split into at the beam splitter (4) so as to travel mutually contrariwise in direction of advance in the ring interferometer are incident into the optical parame
    Type: Application
    Filed: August 11, 2008
    Publication date: February 10, 2011
    Inventors: Takuya Hirano, Yujiro Eto