公开(公告)号：US20180247182A1

公开(公告)日：2018-08-30

申请号：US15881056

申请日：2018-01-26

Applicant: Hitachi, Ltd.

Inventor： Toru MOTOYA ,  Goichi ONO ,  Hidehiro TOYODA

IPC: G06N3/04 ,  G06N3/08 ,  G06K9/46 ,  G06K9/62

CPC classification number: G06N3/04 ,  G06K9/00973 ,  G06K9/4604 ,  G06K9/4628 ,  G06K9/4652 ,  G06K9/6265 ,  G06K9/6285 ,  G06N3/0454 ,  G06N3/063 ,  G06N3/08

Abstract: An information processing apparatus having an input device for receiving data, an operation unit for constituting a convolutional neural network for processing data, a storage area for storing data to be used by the operation unit and an output device for outputting a result of the processing. The convolutional neural network is provided with a first intermediate layer for performing a first processing including a first inner product operation and a second intermediate layer for performing a second processing including a second inner product operation, and is configured so that the bit width of first filter data for the first inner product operation and the bit width of second filter data for the second inner product operation are different from each other.

公开(公告)号：US20140294388A1

公开(公告)日：2014-10-02

申请号：US14065750

申请日：2013-10-29

Applicant: Hitachi, Ltd.

Inventor： Toshiyuki ODAKA ,  Jun SUGAWA ,  Hidehiro TOYODA

IPC: H04B10/27

CPC classification number: H04B10/27 ,  H04J3/1694 ,  H04Q11/0067 ,  H04Q2011/0064 ,  H04Q2011/0086

Abstract: In a PON system in which plural kinds of modulation schemes coexist, when uplink burst signals from respective ONUs are received, the receiving efficiency degrades as the number of the times of switching of the modulation scheme increases. In an optical access (PON) system supporting plural kinds of modulation schemes, an OLT allocates bandwidths for uplink signals, i.e., transmission timings each including a transmission start time and a transmission duration, to ONUs, respectively, such that the bandwidths allocated to plural ONUs for the same modulation scheme are as successive as possible. Based on the transmission timings allocated to the respective ONUs, the OLT switches the modulation scheme of a modulation-scheme variable burst-mode optical transmitter/receiver by control of a modulation scheme controller.

Abstract translation: 在多种调制方案共存的PON系统中，当接收到来自各个ONU的上行链路突发信号时，接收效率随着调制方案的切换次数的增加而降低。 在支持多种调制方式的光接入（PON）系统中，OLT分别向ONU分配用于上行链路信号的带宽（即，包括发送开始时间和发送持续时间的发送定时），使得分配给多个 相同调制方案的ONU尽可能连续。 基于分配给各个ONU的传输定时，OLT通过调制方案控制器的控制来切换调制方案可变突发模式光发射机/接收机的调制方案。

公开(公告)号：US20140293826A1

公开(公告)日：2014-10-02

申请号：US14105614

申请日：2013-12-13

Applicant: Hitachi, Ltd.

Inventor： Masashi KONO ,  Hidehiro TOYODA

IPC: H04L12/26

CPC classification number: H04L43/0894 ,  H04J3/0623 ,  H04J3/1658

Abstract: A receiver includes a data unit decomposer for receiving data units transmitted via a transmission channel and extracting user data including invalid data and valid data by removing management data from the received data units, and a plurality of rate estimators for receiving data forwarded by the data unit decomposer and outputting the data to different output interfaces. Each rate estimator selects valid data from the user data forwarded by the data unit decomposer, inputs the selected valid data to a FIFO unit, controls read frequency of the FIFO unit based on an amount of remaining data in the FIFO unit, and estimates a transmission data rate of an associated input interface in the transmitter based on at least one of a write cycle in writing the valid data to the FIFO unit and the amount of remaining data in the FIFO unit.

Abstract translation: 接收机包括用于接收通过传输信道发送的数据单元的数据单元分解器，并且通过从接收的数据单元中去除管理数据来提取包括无效数据和有效数据的用户数据;以及多个速率估计器，用于接收数据单元转发的数据 分解器并将数据输出到不同的输出接口。 每个速率估计器从由数据单元分解器转发的用户数据中选择有效数据，将所选择的有效数据输入到FIFO单元，基于FIFO单元中的剩余数据量来控制FIFO单元的读取频率，并估计传输 基于将有效数据写入FIFO单元的写入周期和FIFO单元中的剩余数据量中的至少一个，发送器中相关联的输入接口的数据速率。

公开(公告)号：US20140161456A1

公开(公告)日：2014-06-12

申请号：US13783646

申请日：2013-03-04

Applicant: HITACHI, LTD.

Inventor： Jun SUGAWA ,  Toshiyuki ODAKA ,  Hidehiro TOYODA

IPC: H04J14/02

CPC classification number: H04J14/0227 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/025 ,  H04J14/0252 ,  H04J14/0254 ,  H04J14/0257 ,  H04J14/026 ,  H04J14/0267 ,  H04J14/0282

Abstract: An aspect of this invention is a network system including subscriber apparatuses and a station-side apparatus for communicating with the subscriber apparatuses. The station-side apparatus communicates with the subscriber apparatuses using wavelengths. The station-side apparatus determines a wavelength to be used by each of at least one subscriber apparatus of the subscriber apparatuses based on effective transmission rates used by the subscriber apparatuses in communications with the station-side apparatus.

Abstract translation: 本发明的一个方面是一种网络系统，包括用户设备和用于与用户设备通信的站侧设备。 站侧装置使用波长与用户装置进行通信。 站侧装置基于用户装置在与站侧装置的通信中使用的有效传输速率来确定用户装置的至少一个用户装置中的每一个使用的波长。

公开(公告)号：US20150085877A1

公开(公告)日：2015-03-26

申请号：US14477951

申请日：2014-09-05

Applicant: HITACHI, LTD.

Inventor： Masashi KONO ,  Hidehiro TOYODA ,  Satoshi TSUTSUMI

IPC: H04L29/06 ,  H04L12/931

CPC classification number: H04L49/208

Abstract: A transport system comprises 2 apparatuses. The first transport apparatus notifies, for each of first physical ports, to the second transport apparatus, a valid first lane count and identification information of the first physical port. The second transport apparatus is configured to: obtain, for each of second physical ports, a valid second lane count and identification information of the second physical port; associate, based on the valid second lane count and the identification information of the second physical port, and the valid first lane count and the identification information of the first physical port, the identification information of the first and second physical port; and transmit, when data including identification information of one of the first physical ports is transmitted, the data from the second physical port that is identified by the identification information associated with the identification information of the one of the first physical ports.

Abstract translation: 传送系统包括2个装置。 第一传送装置对于第一物理端口的每一个向第二传送装置通知第一物理端口的有效的第一通道数和识别信息。 第二传送装置被配置为：对于第二物理端口中的每一个，获得有效的第二通道数和第二物理端口的识别信息; 根据有效的第二通道数和第二物理端口的识别信息，以及第一物理端口的有效第一通道数和识别信息，第一和第二物理端口的识别信息， 并且当发送包括所述第一物理端口之一的识别信息的数据时，从与所述第一物理端口中的所述一个的所述识别信息相关联的所述识别信息识别的来自所述第二物理端口的数据发送。

公开(公告)号：US20130283108A1

公开(公告)日：2013-10-24

申请号：US13863456

申请日：2013-04-16

Applicant: HITACHI, LTD.

Inventor： Masashi KONO ,  Hidehiro TOYODA

IPC: H04L12/26

CPC classification number: H04L43/50 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/0061 ,  H04L1/0066 ,  H04L1/0075 ,  H04L1/203 ,  H04L25/14 ,  H04L2001/0096

Abstract: A transmitter of a data transmission system using n transmission lanes generates an error code such as an error detection code or an error correction code from transmitted data on x transmission lanes input to an error detection/correction code generating unit, and transmits the same to a lane number switching controlling unit. The lane number switching controlling unit distributes the transmitted data and the error code to at least some of the n transmission lanes as data strings based on lane information indicating a normal lane, a failure lane, or a lane with a sign of a failure received from a receiver. Further, markers including the lane information indicating a normal or failure lane and information to detect a failure of the n transmission lanes are generated and inserted into data strings transmitted on the n transmission lanes, so that communications are performed with the receiver.

Abstract translation: 使用n个传输通道的数据传输系统的发射机在输入到错误检测/校正码产生单元的x个传输通路上产生诸如错误检测码或错误校正码的错误代码，并将其发送到 车道号切换控制单元。 车道编号切换控制单元根据车道信息，将n个传输通道中的至少一些作为数据串分发发送数据和错误代码，该车道信息表示正常车道，故障车道，或具有从 接收器 此外，生成包括指示正常或故障通道的车道信息的标记和用于检测n个传输通道的故障的信息，并将其插入到在n个传输通道上传输的数据串中，从而与接收机进行通信。

公开(公告)号：US20180276527A1

公开(公告)日：2018-09-27

申请号：US15886428

申请日：2018-02-01

Applicant: Hitachi, Ltd.

Inventor： Toru MOTOYA ,  Goichi ONO ,  Hidehiro TOYODA

IPC: G06N3/04 ,  G06F17/16 ,  G06N3/08 ,  G06K9/00 ,  G06F17/28

CPC classification number: G06N3/04 ,  G06F17/16 ,  G06F17/2715 ,  G06F17/2785 ,  G06F17/28 ,  G06K9/00624 ,  G06K9/00973 ,  G06K9/00993 ,  G06K9/4628 ,  G06K9/627 ,  G06N3/0454 ,  G06N3/08

Abstract: In a processing method using a convolutional neural network, the neural network includes a convolution calculation unit that performs a convolution calculation by using a matrix vector product and a pooling calculation unit that performs a maximum value sampling calculation. A threshold value is set related to the matrix data for the convolution calculation, the matrix data is divided into a first and second halves based on the threshold value. The convolution calculation unit divides a first half convolution calculation by using the first half of the matrix data and a second half convolution calculation by using the second half of the matrix data into two and executes the calculations. The pooling calculation unit selects vector data to which the matrix vector product convolution calculation is to be performed in the second half convolution calculation, along with the maximum value sampling calculation.

公开(公告)号：US20140241712A1

公开(公告)日：2014-08-28

申请号：US14185168

申请日：2014-02-20

Applicant: Hitachi, Ltd.

Inventor： Toshiki SUGAWARA ,  Hidehiro TOYODA ,  Kenichi TANAKA

IPC: H04B10/038

CPC classification number: H04B10/038 ,  G02B6/02042 ,  G02B6/3528 ,  H04B10/032 ,  H04B10/077 ,  H04J14/0275 ,  H04J14/029 ,  H04J14/0291

Abstract: A highly reliable optical switching device and optical switching method ensure restoration of the failure in the large-capacity high density wiring of the multicore fiber with the general number of cores (7 cores, 19 cores and the like). An optical transmission system which transmits a supervisory control signal concerning a transmission path switching to one or more cores of a single or multiple multicore fibers, an active signal to one or more cores, and a standby signal to one or more cores includes optical switching devices connected to respective ends of the optical transmission system. Upon detection of the transmission failure of the active signal based on the signal transmission condition and information from the supervisory control signal, it is switched to the standby signal. The supervisory control signal is transmitted to the center core of the multicore fiber.

Abstract translation: 高可靠性的光开关器件和光开关方法可确保多芯光纤的大容量高密度布线的故障恢复，具有一般核心数（7芯，19芯等）。 一种光传输系统，其发送关于传输路径切换到单个或多个多芯光纤的一个或多个核心的监控控制信号，到一个或多个核心的活动信号和到一个或多个核心的备用信号，包括光学开关设备 连接到光传输系统的相应端。 在根据信号传输条件和来自监控信号的信息检测到有效信号的传输故障时，切换到待机信号。 监控信号传输到多芯光纤的中心核心。