Patents by Inventor Takafumi Okuyama
Takafumi Okuyama 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).
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Publication number: 20240144602Abstract: A distribution system according to one embodiment includes: an arrangement unit that arranges a plurality of virtual viewpoints around an object represented by stereoscopic data constituting stereoscopic video content; a first creation unit that creates, for each of the virtual viewpoints, one side stereoscopic data in which an amount of data of a portion of the object that cannot be visually recognized from the virtual viewpoint is reduced; and a distribution unit that distributes one side stereoscopic data of one virtual viewpoint among the one side stereoscopic data for each of the virtual viewpoints to a terminal of a user according to a position and a field of view of the user in a virtual space in which the object is arranged.Type: ApplicationFiled: April 30, 2021Publication date: May 2, 2024Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Xiaotian ZHAO, Takafumi OKUYAMA, Hiroyuki KITADA
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Patent number: 11924484Abstract: A system control apparatus for acquiring a prototype manifest file that is a basis of a manifest file to be transmitted to a viewing client in a system for delivering video data over a network, includes: an estimation unit configured to analyze content of a prototype manifest file acquired from an origin server, to determine a next acquisition timing of the prototype manifest file; and an acquisition unit configured to acquire the prototype manifest file from the origin server, based on the next acquisition timing determined by the estimation unit.Type: GrantFiled: November 26, 2019Date of Patent: March 5, 2024Assignee: Nippon Telegraph and Telephone CorporationInventors: Takafumi Okuyama, Hiroyuki Kitada, Xiaotian Zhao
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DISTRIBUTION CONTROL APPARATUS, DISTRIBUTION CONTROL SYSTEM, DISTRIBUTION CONTROL METHOD AND PROGRAM
Publication number: 20240064360Abstract: A distribution control device configured to distribute three-dimensional video data including a plurality of meshlets and a texture of each meshlet to a client PC, the device comprising: a distribution control unit configured to select a high-quality meshlet as a meshlet under a viewpoint of a user based on information regarding the viewpoint and the field of view of the user received from the client PC, select a high-quality texture as the texture, select a low-quality meshlet as a meshlet at a position not present in the field of view of the user, and select a low-quality texture as the texture; and a transmission processing unit that transmits the meshlet and the texture selected by the distribution control unit to the client PC.Type: ApplicationFiled: January 5, 2021Publication date: February 22, 2024Inventors: Xiaotian ZHAO, Takafumi OKUYAMA, Hiroyuki KITADA -
Patent number: 11838452Abstract: A control device that controls a bit rate selectable by a client terminal in a video distribution network in which video data is distributed includes a database configured to store distribution information, band allocation information, and distribution system information, the distribution information containing information on video data in a distribution system, the band allocation information containing an allocated band of each session in which the distribution system performs video distribution, and the distribution system information containing a channel band of the distribution system, and a control unit configured to receive a viewing request from the client terminal, calculate an available band in the distribution system with reference to the database, and determine a maximum bit rate selectable by the client terminal based on the available band and one or more bit rates of video data corresponding to the viewing request.Type: GrantFiled: August 19, 2019Date of Patent: December 5, 2023Assignee: Nippon Telegraph and Telephone CorporationInventors: Hiroyuki Kitada, Takafumi Okuyama, Seisho Yasukawa
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Publication number: 20230020645Abstract: A system control apparatus for acquiring a prototype manifest file that is a basis of a manifest file to be transmitted to a viewing client in a system for delivering video data over a network, includes: an estimation unit configured to analyze content of a prototype manifest file acquired from an origin server, to determine a next acquisition timing of the prototype manifest file; and an acquisition unit configured to acquire the prototype manifest file from the origin server, based on the next acquisition timing determined by the estimation unit.Type: ApplicationFiled: November 26, 2019Publication date: January 19, 2023Inventors: Takafumi OKUYAMA, Hiroyuki KITADA, Xiaotian ZHAO
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Patent number: 11463745Abstract: A system control device that transmits a manifest file describing information necessary for acquiring video data to a viewing client in a system that performs distribution of the video data via a network includes: generation means for generating the manifest file on the basis of at least one of identification information indicating a viewer attribute, a time zone, and a state of the system according to a prescribed control policy; and transmission means for transmitting the manifest file generated by the generation means to the viewing client.Type: GrantFiled: November 11, 2019Date of Patent: October 4, 2022Assignee: Nippon Telegraph and Telephone CorporationInventors: Takafumi Okuyama, Hiroyuki Kitada, Hiroshi Inoue, Kenichi Endo, Toshiaki Tsuchiya, Seisho Yasukawa
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Publication number: 20220279249Abstract: A control device that controls a bit rate selectable by a client terminal in a video distribution network in which video data is distributed includes a database configured to store distribution information, band allocation information, and distribution system information, the distribution information containing information on video data in a distribution system, the band allocation information containing an allocated band of each session in which the distribution system performs video distribution, and the distribution system information containing a channel band of the distribution system, and a control unit configured to receive a viewing request from the client terminal, calculate an available band in the distribution system with reference to the database, and determine a maximum bit rate selectable by the client terminal based on the available band and one or more bit rates of video data corresponding to the viewing request.Type: ApplicationFiled: August 19, 2019Publication date: September 1, 2022Inventors: Hiroyuki KITADA, Takafumi OKUYAMA, Seisho YASUKAWA
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Patent number: 11277661Abstract: A quality information collecting system acquiring video data distributed in response to a viewing request and collecting quality-related information regarding video viewing from a viewing client playing back a video includes a quality information control functional unit configured to determine whether or not to request the viewing client having made a viewing request to report quality-related information, based on a network communication situation in which the video data is distributed, and a quality information collecting and analysis functional unit configured to receive, in accordance with a determination of the quality information control functional unit, the quality-related information transmitted from the viewing client.Type: GrantFiled: October 29, 2019Date of Patent: March 15, 2022Assignee: Nippon Telegraph and Telephone CorporationInventors: Hiroshi Inoue, Toshiaki Tsuchiya, Takafumi Okuyama, Seisho Yasukawa, Kenichi Endo, Hiroyuki Kitada
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Publication number: 20220007064Abstract: A system control device that transmits a manifest file describing information necessary for acquiring video data to a viewing client in a system that performs distribution of the video data via a network includes: generation means for generating the manifest file on the basis of at least one of identification information indicating a viewer attribute, a time zone, and a state of the system according to a prescribed control policy; and transmission means for transmitting the manifest file generated by the generation means to the viewing client.Type: ApplicationFiled: November 11, 2019Publication date: January 6, 2022Inventors: Takafumi OKUYAMA, Hiroyuki KITADA, Hiroshi INOUE, Kenichi ENDO, Toshiaki TSUCHIYA, Seisho YASUKAWA
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Publication number: 20210400336Abstract: A quality information collecting system acquiring video data distributed in response to a viewing request and collecting quality-related information regarding video viewing from a viewing client playing back a video includes a quality information control functional unit configured to determine whether or not to request the viewing client having made a viewing request to report quality-related information, based on a network communication situation in which the video data is distributed, and a quality information collecting and analysis functional unit configured to receive, in accordance with a determination of the quality information control functional unit, the quality-related information transmitted from the viewing client.Type: ApplicationFiled: October 29, 2019Publication date: December 23, 2021Inventors: Hiroshi INOUE, Toshiaki TSUCHIYA, Takafumi OKUYAMA, Seisho YASUKAWA, Kenichi ENDO, Hiroyuki KITADA
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Publication number: 20210168051Abstract: Included are a communication quality requirement derivation unit that derives, for a specific service session between a server and a terminal, a communication quality requirement to be satisfied between the server and the terminal based on a requested quality of experience of the specific service session; a monitoring unit that monitors a communication quality of the specific service session between the server and the terminal; a determination unit that determines whether the communication quality of the specific service session satisfies the communication quality requirement derived for the specific service session; and a control unit that controls, when the communication quality of the specific service session does not satisfy the communication quality requirement derived for the specific service session, a communication route used for the specific service session between the server and the terminal so as to satisfy the communication quality requirement.Type: ApplicationFiled: August 2, 2019Publication date: June 3, 2021Inventors: Takafumi OKUYAMA, Hiroshi INOUE, Kenichi ENDO, Toshiaki Tsuchiya, Seisho YASUKAWA
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Publication number: 20210120067Abstract: A quality prediction apparatus includes a first acquisition unit acquiring a first throughput for an access network of a terminal from the terminal, the terminal acquiring video data in a divided state from a plurality of video streaming servers, a second acquisition unit acquiring a second throughput for a core network to which the plurality of video streaming servers connect, the terminal being to acquire the video data from one of the video streaming servers, and a prediction unit selecting smaller one of the first throughput and the second throughput as a prediction value of a throughput for the video data to be acquired, and therefore, an efficient prediction of the throughput for the video data streaming can be enabled.Type: ApplicationFiled: February 1, 2019Publication date: April 22, 2021Inventors: Takafumi OKUYAMA, Seishou YASUKAWA, Masataka MASUDA, Kenichi ENDOU
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Patent number: 10986156Abstract: A quality prediction apparatus includes a first acquisition unit acquiring a first throughput for an access network of a terminal from the terminal, the terminal acquiring video data in a divided state from a plurality of video streaming servers, a second acquisition unit acquiring a second throughput for a core network to which the plurality of video streaming servers connect, the terminal being to acquire the video data from one of the video streaming servers, and a prediction unit selecting smaller one of the first throughput and the second throughput as a prediction value of a throughput for the video data to be acquired, and therefore, an efficient prediction of the throughput for the video data streaming can be enabled.Type: GrantFiled: February 1, 2019Date of Patent: April 20, 2021Assignee: Nippon Telegraph and Telephone CorporationInventors: Takafumi Okuyama, Seishou Yasukawa, Masataka Masuda, Kenichi Endou