Nippon Telegraph and Telephone Corporation

Yamaichi Electronics Co., Ltd.

Hiroyuki Kitada

Takafumi Okuyama

Seisho Yasukawa

Hiroshi Inoue

Masaru Sato

Toshiaki Tsuchiya

Kenichi Endo

Xiaotian Zhao

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.

Distribution control system, distribution control apparatus, distribution control method, and program

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.

System control apparatus and prototype manifest file acquisition method

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.

Control apparatus, control method and program

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.

System control apparatus, system control method and program

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.

Quality information collection system, quality information collection method and program

An accommodation portion for a semiconductor device to be mounted is formed of an accommodation portion of a positioning member that is restricted in its position to a socket body and supported on the same, and an accommodation portion of a positioning member that is supported on the socket body relatively movably with respect to the socket body.

Semiconductor device-socket

A semiconductor device-socket is provided, in which the amount of the movement of a contact deviation member is restricted by a protrusion P such that a predetermined gap CL is formed between a partition wall W and a movable contact portion A , and a predetermined gap CL is also formed between an outer peripheral surface of the partition wall W and a movable contact portion A

Growing community of inventors

Tokyo, Japan

Hiroyuki Kitada