Patents by Inventor Yasunobu KASAHARA

Yasunobu KASAHARA 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).

  • Content distribution system, unicast multicast converter, content distribution method and content distribution program
    Patent number: 11882340
    Abstract: The present disclosure is intended to enable efficient content forwarding in an HTTP-based web distribution system while maintaining HTTP, which is unicast. In the present disclosure, a unicast-multicast conversion device and a multicast-unicast conversion device that are connected, by using a multicast communication network, with a network between a content server and a terminal that perform web distribution are provided. The unicast-multicast conversion device and the multicast-unicast conversion device execute, in both multicast and unicast, forwarding of a content group into which a plurality of contents are grouped.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: January 23, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Toshihito Fujiwara, Yasunobu Kasahara, Hidekazu Shimizu
  • CONTENT DISTRIBUTION SYSTEM, UNICAST MULTICAST CONVERTER, CONTENT DISTRIBUTION METHOD AND CONTENT DISTRIBUTION PROGRAM
    Publication number: 20220295155
    Abstract: The present disclosure is intended to enable efficient content forwarding in an HTTP-based web distribution system while maintaining HTTP, which is unicast. In the present disclosure, a unicast-multicast conversion device 105 and a multicast-unicast conversion device 104 that are connected, by using a multicast communication network 102, with a network between a content server 106 and a terminal 107 that perform web distribution are provided, and the unicast-multicast conversion device 105 and the multicast-unicast conversion device 104 execute, in both multicast and unicast, forwarding of a content group into which a plurality of contents are grouped.
    Type: Application
    Filed: July 10, 2019
    Publication date: September 15, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Toshihito FUJIWARA, Yasunobu KASAHARA, Hidekazu SHIMIZU
  • CONTENT DISTRIBUTION SYSTEM, MULTICAST UNICAST / MULTICAST MULTICAST CONVERTER, MULTICAST UNICAST CONVERTER, CONTENT DISTRIBUTION METHOD AND CONTENT DISTRIBUTION PROGRAM
    Publication number: 20220263673
    Abstract: An object of the present disclosure is to enable content to be efficiently transferred in an HTTP-based web delivery system while maintaining a unicast HTTP and further avoiding the limitations associated with the multicast. In the present disclosure, a unicast-multicast converting apparatus 105, a multicast-unicast/multicast-multicast converting apparatus 113, and a multicast-unicast converting apparatus 114 are connected to a network between a content server 106 performing web delivery and a terminal 117 using a multicast communication networks 102 and 112. Through the multicast-unicast/multicast-multicast converting apparatus 113, a content group each including a plurality of contents grouped is transferred both in multicast and unicast.
    Type: Application
    Filed: July 23, 2019
    Publication date: August 18, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Toshihito FUJIWARA, Yasunobu KASAHARA, Satoshi IKEDA