Nippon Telegraph and Telephone Corporation

Daisuke Shirai

Takahiro Yamaguchi

Yasuhiro Mochida

Takayuki Nakachi

Yoshihide Tonomura

Tatsuya Fujii

Toru Mano

Yukio Tsukishima

Junki Ichikawa

Tomoya Hibi

Takuro Yamaguchi

Masahiko Kitamura

A video transmission system includes a video transmitter for storing a packet of video data in a transmitting buffer and transmitting the packet stored in the transmitting buffer, a video receiver for receiving the packet, and an estimation unit for estimating a characteristic of a transmission line between the video transmitter and the video receiver from an arrival time of each packet in the video receiver. The video transmitter transmits a packet at a timing specified from an inverse characteristic of a characteristic of the transmission line.

Video transmission system, video transmission method and video transmitter

An object of the present disclosure is to provide a data communication system, a computing apparatus, a data communication method, and a program, which are capable of highly reliable data transfer with low latency between computing apparatuses. The present disclosure achieves a highly reliable communication path by directly connecting computing apparatuses via an optical path and transmitting data through the optical path. Further, the present disclosure uses the optical path to achieve RDAM over wavelength transmission in which existing RDMA-enabled protocol stacks such as InfiniBand and TCP/IP/Ether are eliminated. The present disclosure eliminates the protocol stacks, enabling transfer with lower latency than in a case of 'simply performing RDMA transmission over the wavelength path'.

Data communication system, computer, data communication method, and program

A selective PEG algorithm, creating a sparse matrix while maintaining row weight/column weight at arbitrary multi-levels, and in the process, inactivating an arbitrary edge so that a minimum loop formed between arbitrary nodes is enlarged or performing constrained interleaving, so that encoding efficiency in the case where a matrix space is narrow is improved.

Sparse graph creation device and sparse graph creation method

This method and device makes it possible to implement maximum likelihood decoding of a sparse graph code at low computational complexity in the maximum likelihood decoding of the sparse graph code. This is, in the maximum likelihood of decoding of the sparse graph code, a lost data decoding process by a trivial decoding method and a lost data decoding process by a Gauss elimination method are performed repeatedly and alternately.

Channel decoding method and channel decoding device

Growing community of inventors

Yokosuka, Japan

Daisuke Shirai