Sony Corporation

Sharp Kabushiki Kaisha Corporation

Sony Group Corporation

Sony Corporations

Yoshinobu Kure

Masato Kawada

Osamu Yoshimura

Chihiro Fujita

Hideaki Murayama

Kensaku Wakuda

Tamotsu Munakata

Vijitha Sanjeewa Ranatunga

Yoshihiro Kosaka

Tatsuya Igarashi

Takahiro Fukuhara

Shinji Kobayashi

Eisaburo Itakura

Akio Tanaka

Takaaki Fuchie

Kazuhito Nagura

Yoichi Toriumi

Kazuyoshi Horie

Kuninori Shino

Koichi Ogasawara

Yoshifumi Masuda

Yuta Choki

Shunsuke Miura

Yutaka Takahashi

Shoji Kasahara

Youichi Toriumi

Ken′ Iti Ookubo

Chuan Yu

An information processing device () includes a data classification unit () and a target transmission rate setting unit (). The data classification unit () classifies a plurality of pieces of data transmitted via a network () into one or more groups based on a sharing state of a communication resource between the data. The target transmission rate setting unit () sets, for each group, a target transmission rate of each data belonging to the group based on a setting reference of the target transmission rate defined for each group.

Information processing device, information processing system, and information processing method for data classification

In the present disclosure, a network monitoring system is provided including an IP network monitoring unit () that monitors an IP network to which an IP device is connected; and a non-IP device monitoring unit () that monitors a non-IP device. It is possible to monitor both the IP network and the non-IP device in a system that includes the IP network including the IP device and the non-IP device.

Network monitoring system, network monitoring method, and program

[Object] To provide a communication control device configured to efficiently secure bands of an IP network in order to transmit data streams. [Solution] There is provided a communication control device including: a channel information acquisition unit configured to acquire, when AV streams are transmitted from a plurality of transmission apparatuses to one or more reception apparatuses on an IP network while being switched, all channel information from the transmission apparatuses to the reception apparatuses; a traffic calculation unit configured to calculate a maximum traffic generated in switching patterns of the transmission of the AV streams from the transmission apparatuses to the reception apparatuses, on the basis of the channel information acquired by the channel information acquisition unit; and a transmission band reservation unit configured to reserve a transmission band on the IP network, on the basis of the maximum traffic calculated by the traffic calculation unit.

Communication control device, communication control method, and communication system

There is provided an information processing device including an adjustment unit that adjusts respective lengths of delay times, which delay data transmission, for a plurality of different delay elements regarding the data transmission, so as to match with the longest delay time of the plurality of delay times or a predetermined time equal to or more than the longest delay time, and a setting unit that sets the respective plurality of delay times of which the lengths are adjusted by the adjustment unit in a processing unit which performs a process for the data transmission.

Information processing device and method

Provided is a relay management apparatus including: a session management unit configured to perform registration of session information for multicast transmission of a data stream that is performed between one or two or more transmission apparatuses and one or two or more reception apparatuses via relay links of a relay apparatus, separately for information on a transmission apparatus side and information on a reception apparatus side; and a band reservation unit configured to perform band reservation of a relay link on the transmission apparatus side or band reservation of a relay link on the reception apparatus side, based on the registration of the session information on the transmission apparatus side or the reception apparatus side performed by the session management unit.

Relay management apparatus, relay management method, program, and relay management system

There is provided a reception device including a reception unit that receives stream data transmitted by multicast transmission from a plurality of transmitters at respective different transmission rates in a physical layer, an acquisition unit that acquires environment change information related to a change in a network environment with the transmitters, and a connection destination selection unit that selects, on the basis of the acquired environment change information, one transmitter from among the plurality of transmitters as a connection destination of the reception unit.

Reception device, transmission/reception system, reception method, and program

An apparatus includes a receiver, a delay value receiver, a time stamp calculation unit, and a transmitter. The receiver is configured to receive a content signal. The delay value receiver is configured to receive a delay value from another apparatus. The time stamp calculation unit is configured to determine a time stamp based on the delay value. The transmitter is configured to send the content signal including the time stamp to the other apparatus.

Apparatus and method for synchronized transmission of multimedia content over an asynchronous network

The present invention relates to an information processing apparatus, a method, and a program capable of suppressing deterioration of content quality. An integrated reception buffer time adjustment unitobtains a maximum transmission delay time that is the longest delay time among the transmission delays of data transmission performed by each reception unit. The reception buffer time setting unitcalculates a reception buffer time using the maximum transmission delay time, a transmission delay time of the data transmission by the reception unit, and a prescribed reception buffer time. The reception buffer time setting unitsets various delay times and waiting times such as a variable compression encoding delay time, a redundant encoding block reception waiting time, an ARQ retransmission packet waiting time, and a network jitter handling buffer time from the reception buffer time. The present invention can be applied to an information processing apparatus, for example.

Information processing apparatus, method, and program

A data communication system includes a data transmitting apparatus and a data receiving apparatus. The data transmitting apparatus includes a packetizing section that generates data packets, an encoding section that performs redundant encoding on the data packets in predetermined time units and generates encoded blocks, a data transmitting section that transmits each encoded block to the data receiving apparatus, a data-size acquiring section that acquires a data size of transmission data in each predetermined time unit, and a packet-size determining section that, on the basis of the acquired data size, in each predetermined time unit, determines a packet size of each data packet. The data receiving apparatus includes a data receiving section that acquires data packets of the transmission data by receiving each encoded block transmitted, and a depacketizing section that analyzes the data packets of the acquired transmission data and reconfigures the transmission data.

Data communication system, data transmitting apparatus, data transmitting method, and method for determining packet size and redundancy

Image data is encoded to generate encoded data. An encoding-time buffer period that is a minimum buffer period necessary to prevent synchronous reproduction in which the encoded data is decoded and reproduced in synchronization with a timestamp added to the encoded data from failing due to a delay caused by encoding of the image data is added to the encoded data as encoding header information. A transmission-time buffer period that is a minimum buffer period necessary to prevent the synchronous reproduction from failing due to a delay caused by encoding of the image data and transmission of the encoded data is added to the encoded data as transmission header information different from the encoding header information. The encoded data having the encoding-time buffer period and the transmission-time buffer period added thereto is transmitted to another apparatus that performs the synchronous reproduction via a network.

Transmitting apparatus and method, and receiving apparatus and method

A transmitting apparatus includes a rate adjusting unit, a changing unit, a buffer control unit, and a transmitting unit. The rate adjusting unit adjusts a transmission rate of transmitting data. The changing unit changes a size of a buffer for temporarily storing the data, on the basis of the transmission rate. The buffer control unit configured to cause the buffer to temporarily store the data, which is smaller than or equal to an addable size that is smaller than the size of the buffer, and to output the data to the transmitting unit. The transmitting unit transmits the data output from the buffer.

Transmitting apparatus, transmitting method, and program

A multi-hop wireless terminal having a user application section, a traffic control section and a wireless transmitting/receiving section, the traffic control section enqueuing a packet of a transmission flow from the user application section and a packet of a forward flow from the wireless transmitting/receiving section in queues different for each flow and performing traffic control, where the traffic control section includes a queue manager for sorting a packet of each input flow into a corresponding queue and enqueuing the packet, and a packet scheduler for dequeuing a packet from each queue and outputting the packet, and where the packet scheduler selects from the queues a queue from which a packet is to be dequeued and output, based on transmission information of each of the flows.

Multi-hop wireless terminal and traffic control method thereof

A control apparatus accepts a request for transmission of a content from a content transmission apparatus to the control apparatus, passes on the request to the content transmission apparatus by way of a communication network allowing a transmission quality to be reserved, and issues a request to a content accounting server to carry out a content accounting process according to the substance and content quality. The control apparatus receives a specified substance of the content and transmits a request to the content transmission apparatus to transmit the content, determines a transmission quality and an optimum content quality, makes a reservation for the determined transmission quality of a transmission line based on the transmission quality, and issues a request to a transmission-quality accounting server to carry out an accounting process according to the transmission quality.

Control apparatus, content transmission system and content transmission method

There is provided a communication device including a communication state determination section which determines a communication state corresponding to a transmission rate demanded from a simulation engine based on a transmission rate and a state of communication at the transmission rate between a first communication state measurement device and a second communication state measurement device via a real network, a traffic generation section which generates traffic by creating data based on the communication state determined by the communication state determination section, a protocol processing section which creates a packet including the data created by the traffic generation section, and a communication section which transmits the packet created by the protocol processing section to another communication device.

Communication device, communication method, and program

Disclosed herein is a control apparatus for accepting a request for transmission of a content from a content transmission apparatus to the control apparatus and for passing on the request to the content transmission apparatus by way of a communication network allowing a transmission quality to be reserved and for issuing a request to a content accounting server to carry out a content accounting process according to the substance and content quality wherein the control apparatus: receives a specified substance and quality of the content and transmits a request to the content transmission apparatus to transmit the content; determines a transmission quality on the basis of the specified content quality and makes a reservation for the determined transmission quality of a transmission line on the basis of the transmission quality; and issues a request to a transmission-quality accounting server to carry out an accounting process according to the transmission quality.

Growing community of inventors

Kanagawa, Japan

Yoshinobu Kure