Abstract: 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.

Abstract: 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.

Abstract: An information processing device includes: an obtaining means for obtaining encoded data obtained by encoding image data formed by blocks with predetermined data unit, for each block, and redundant data for the encoded data obtained by encoding the encoded data using a forward error correction method; a decoding means for decoding each block using the encoded data and intermediate data generated during a decoding process if the encoded data is all collected or using dummy data, the encoded data, and intermediate data generated during a decoding process if the encoded data is not all collected; a forward error correction method decoding means for decoding the encoded data and the redundant data and recovers lost encoded data; and a setting means for decoding the encoded data and setting intermediate data obtained during the decoding to be used to decode a subsequent block as intermediate data during a decoding process for a block which has been decoded.

Abstract: A packet transmission apparatus to transmit a packet limited in arrival deadline through a best-effort network includes a packet automatic retransmission section to control retransmission of an undelivered packet, a forward error correction coding section to add redundant packet to a data packet block, and a redundancy determining section to dynamically determine redundancy of the redundant packet based on observed network state information so that a loss rate after error correction at a receiver achieved by only the retransmission of the undelivered packet satisfies an allowable loss rate after error correction.

Abstract: 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 unit 114 obtains a maximum transmission delay time that is the longest delay time among the transmission delays of data transmission performed by each reception unit 113. The reception buffer time setting unit 208 calculates a reception buffer time using the maximum transmission delay time, a transmission delay time of the data transmission by the reception unit 113, and a prescribed reception buffer time. The reception buffer time setting unit 208 sets 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.

Abstract: An information processing apparatus includes: a coding mechanism for generating hierarchical data hierarchized in descending order of importance with respect to resolution from image data, and coding the hierarchical data for each hierarchy; and a redundancy coding mechanism for blocking the hierarchical data for each of the hierarchies using a block size determined for each of the hierarchies on the basis of dependencies of the hierarchies between pieces of the hierarchical data generated by the coding mechanism or between the hierarchical data and the image data, and performing redundancy coding to generate redundant data of the hierarchical data for each of the blocks.

Abstract: A packet transmission apparatus to transmit a packet limited in arrival deadline through a best-effort network includes a packet automatic retransmission section to control retransmission of an undelivered packet, a forward error correction coding section to add redundant packet to a data packet block, and a redundancy determining section to dynamically determine redundancy of the redundant packet based on observed network state information so that a loss rate after error correction at a receiver achieved by only the retransmission of the undelivered packet satisfies an allowable loss rate after error correction.

Abstract: A packet transmission apparatus is provided. The packet transmission apparatus transmits a packet having a limited arrival deadline through a best-effort network. The packet transmission apparatus includes an automatic packet retransmission section to control retransmission of an undelivered packet, a forward error correction coding section to add a redundant packet to a data packet block, and a redundancy determining section to dynamically determine redundancy of the redundant packet based on observed network state information, so that a loss rate after error correction at a receiver achieved by only the retransmission of the undelivered packet satisfies an allowable loss rate after error correction.

Abstract: 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.

Abstract: A transmitting apparatus includes a rate adjusting unit, a changing unit, an output 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 output unit reads out the data stored in the buffer and outputs the data to a transmitting unit. The transmitting unit transmits the data output by the output unit.

Abstract: 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.

Abstract: 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.

Abstract: A receiver includes a receiving section that receives communication packets transmitted from a transmitter, which transmits the communication packets each including encoded data, and an image header, sequentially from the encoded data corresponding to the beginning of an image, a first accumulating section that accumulates the encoded data and the image header included in each of the received communication packets, a detecting section that detects a picture header transmitted together with the encoded data corresponding to the beginning of the image, from the image header of each of the received communication packets, in a predetermined observation interval, a second accumulating section that accumulates the detected picture header, and a control section that reads out the picture header accumulated in the second accumulating section, and causes the picture header to be accumulated into the first accumulating section, if the picture header is not detected within the observation interval.

Abstract: 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.

Abstract: 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.

Abstract: Disclosed herein is a transmitting device, including: a reproduction time information adding portion configured to add reproduction time information specifying timing of reproduction of data as an object of transmission to the data; a control time information adding portion configured to add control time information specifying control timing when circuit control is performed on a circuit, the data being to be transmitted through the circuit, to data transfer control information; and a transmitting portion configured to transmit data to which the reproduction time information and the control time information are added.

Abstract: An information processing device includes: an obtaining means for obtaining encoded data obtained by encoding image data formed by blocks with predetermined data unit, for each block, and redundant data for the encoded data obtained by encoding the encoded data using a forward error correction method; a decoding means for decoding each block using the encoded data and intermediate data generated during a decoding process if the encoded data is all collected or using dummy data, the encoded data, and intermediate data generated during a decoding process if the encoded data is not all collected; a forward error correction method decoding means for decoding the encoded data and the redundant data and recovers lost encoded data; and a setting means for decoding the encoded data and setting intermediate data obtained during the decoding to be used to decode a subsequent block as intermediate data during a decoding process for a block which has been decoded.

Abstract: A packet transmission apparatus is provided. The packet transmission apparatus transmits a packet having a limited arrival deadline through a best-effort network. The packet transmission apparatus includes an automatic packet retransmission section to control retransmission of an undelivered packet, a forward error correction coding section to add a redundant packet to a data packet block, and a redundancy determining section to dynamically determine redundancy of the redundant packet based on observed network state information, so that a loss rate after error correction at a receiver achieved by only the retransmission of the undelivered packet satisfies an allowable loss rate after error correction.

Abstract: 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.

Abstract: 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.