Patent application number | Description | Published |
20120224494 | TRANSMISSION SYSTEM, TRANSMISSION METHOD, AND COMMUNICATION DEVICE - A transmission system includes a transmission device and a reception device connected with each other via two lines. When the transmission device switches a line, used for transmitting VLAN traffic, from a first line to a second line, the transmission device transmits the VLAN traffic to the second line by switching the line after transmitting a post-switching message to the first line. The reception device includes a first buffer which stores the VLAN traffic received from the first line and a second buffer which stores the VLAN traffic received from the second line. When the reception device receives the post-switching message from the first line, the reception device starts reading of the VLAN traffic from the second buffer after reading the entire VLAN traffic stored in the first buffer. | 09-06-2012 |
20120257511 | DETERMINATION DEVICE, TRANSMISSION DEVICE, DETERMINATION METHOD, AND COMPUTER PROGRAM - Disclosed is a determination device provided with: a determination unit for determining whether or not a received frame is a predetermined specific frame; an error detection unit for detecting errors in relation to the frame; a disposal unit for disposing of the frame when an error is detected in relation to the frame and the frame is not the specific frame; and a rewriting unit for rewriting code for detecting errors in relation to the specific frame, in accordance with the state of the current frame. | 10-11-2012 |
20120263193 | TRANSMISSION SYSTEM, TRANSMITTING DEVICE, RECEIVING DEVICE, TRANSMISSION METHOD, AND COMPUTER PROGRAM - Disclosed is a transmission system, having a transmitting device and a receiving device, which divides a series of data streams into a plurality of unit data and transmitting the unit data. The transmitting device and receiving devices include synchronization units outputting mutually synchronized clock signals. A frequency change unit changes a frequency of a time division multiplexing (TDM) signal on the basis of the clock signal output from the synchronization unit of its own device. A conversion unit converts the TDM signal with the changed frequency into the unit data and transmitting the unit data to the receiving device. A decoding unit receives the unit data from the transmitting device and generates the TDM signal with the changed frequency. A frequency restoration unit restores the TDM signal by returning a frequency of the TDM signal with the changed frequency to an original on the basis of the clock signal. | 10-18-2012 |
20130010683 | RELAY APPARATUS, RELAY METHOD AND COMPUTER PROGRAM - A relay apparatus includes a first control section which connects to a first network, a second control section which connects to a second network, the type of which is different from that of the first network, and a relay section which selects a path to be operated as an active system from the first network and the second network and switches paths based on information regarding the first network and information regarding the second network, wherein the second control section converts a transmission unit for transmission in the first network into a transmission unit for transmission in the second network, and transmits the transmission unit to the second network. | 01-10-2013 |
20130010811 | TRANSMITTING DEVICE AND TRANSMITTING METHOD - A transmitting device is provided which includes a plurality of input interfaces, each of which receives a signal from another device, a plurality of output interfaces, each of which transmits a signal to another device, a multiplexing unit which multiplexes the signals received by the plurality of input interfaces, a distributing unit which transmits the signal multiplexed by the multiplexing unit to each of the plurality of output interfaces, and a table storage unit which stores a switching table in which a transmission destination of each signal is defined. The output interface extracts a signal which the output interface is to transmit according to content of the switching table from each signal included in the signal multiplexed by the multiplexing unit, and transmits the extracted signal to a transfer destination according to the content of the switching table. | 01-10-2013 |
20130024750 | TRANSMISSION SYSTEM - When a first communication device receives a predetermined message from a second communication device via a third line (L | 01-24-2013 |
20130033985 | TRANSMISSION DEVICE, TRANSMISSION METHOD AND COMPUTER PROGRAM - Flow control can be performed for every piece of end-to-end traffic. A transmission device includes a reception buffer which temporarily accumulates received transmission unit data, a signal generation section configured to generate a control signal for instructing to stop transmission of transmission unit data by designating another transmission device serving as an end point of a transmission side for traffic of the transmission unit data to be received by its own device as a transmission destination when an amount of accumulation in the reception buffer has exceeded a predetermined upper-limit threshold value, and a transmission section configured to transmit the control signal. | 02-07-2013 |
20130077559 | TRANSMISSION DEVICE, BANDWIDTH CONTROL METHOD AND COMPUTER PROGRAM - In a transmission network of a multi-hop connection in which a transmission bandwidth between relay stations changes, it is possible to prevent congestion from occurring due to a change in the transmission bandwidth between the relay stations. A transmission device connected to a network constituted of a plurality of relay stations includes a transmission section configured to transmit a signal to the network, and a bandwidth control section configured to control a transmission bandwidth of the transmission section based on a lowest transmission bandwidth among transmission bandwidths between the relay stations. | 03-28-2013 |
20130272352 | TRANSMISSION DEVICE, TRANSMISSION METHOD AND COMPUTER PROGRAM - Provided is a transmission device that transmits or receives synchronous data used to perform synchronization of a clock through a transmission path having a variable transmission band and includes a transmission band acquiring unit that acquires a current transmission band in the transmission path, a calculating unit that calculates a time necessary until the synchronous data is received after the synchronous data is transmitted through the transmission path based on the transmission band, and accumulates the calculated time and a staying time of the synchronous data in its own device as delay information recorded in the synchronous data, and a transmitting unit that writes a value of a result of accumulation by the calculating unit to the synchronous data as new delay information of the synchronous data, and transmits the synchronous data. | 10-17-2013 |
20130336341 | SYNCHRONIZING SYSTEM, SYNCHRONIZING METHOD, FIRST SYNCHRONIZING DEVICE, SECOND SYNCHRONIZING DEVICE, AND COMPUTER PROGRAM - Provided is a synchronization system comprising a first synchronization device and a second synchronization device which carry out synchronization processing by transmitting and receiving synchronization packets in accordance with a synchronization protocol and which synchronize the times thereof. The first synchronization device, which corresponds to a slave device, notifies an abnormality to the second synchronization device when an abnormality related to time synchronization processing is detected. The second synchronization device, which corresponds to a master device, increases the interval during which synchronization is performed as the length of time during which an abnormality notification is not received increases. | 12-19-2013 |