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    • 5. 发明授权
    • Data transmission apparatus and method
    • 数据传输装置及方法
    • US6014765A
    • 2000-01-11
    • US872104
    • 1997-06-10
    • Yasutoshi MaedaKatsuya MitsutakeKoh KamizawaYuji KozawaTakanori HisanagaIchiro Yamashita
    • Yasutoshi MaedaKatsuya MitsutakeKoh KamizawaYuji KozawaTakanori HisanagaIchiro Yamashita
    • G06F3/12G06F13/00H04L1/16H04L1/18H04L29/08G08C25/02
    • H04L1/165H04L1/188
    • A data transmission apparatus having a storage device for storing at least one structure data piece of a data processing device in a receiving data processing apparatus, a computation device for computing a transmission error detection code from the structure data stored in the storage device and a device for attaching the transmission error detection code computed by the computation device to the structure data stored in the storage device. The data transmission apparatus further includes a transmitter for transmitting the structure data to which the transmission error detection code is attached to a receiving apparatus, a receiver for receiving a retransmission request for each structure data piece returned from the receiving apparatus when a transmission error is detected based on the transmission error detection code and structure data transmitted by the transmitter, and a device for responding to the restransmission request for each structure data piece received by the reception means by retransmitting the corresponding structure data piece to the receiving apparatus.
    • 一种数据传输装置,具有用于在接收数据处理装置中存储数据处理装置的至少一个结构数据段的存储装置,用于从存储在存储装置中的结构数据计算传输错误检测码的计算装置, 用于将由计算装置计算的传输错误检测码附加到存储在存储装置中的结构数据。 数据发送装置还包括:发送装置,用于发送发送错误检测码附加到接收装置的结构数据;接收装置,用于当检测到发送错误时接收从接收装置返回的每个结构数据块的重发请求 基于由发送器发送的传输错误检测码和结构数据,以及用于响应于由接收装置接收的每个结构数据段的不再发送请求的装置,通过将相应的结构数据片重新发送到接收装置。
    • 7. 发明授权
    • Data transmission system having feature for predicting time completion
based on changing of states of use of bandwidth and time required for
retransmission
    • 数据传输系统具有用于基于带宽的使用状态的改变和重传所需的时间来预测时间完成的特征
    • US5907556A
    • 1999-05-25
    • US838991
    • 1997-04-23
    • Takanori HisanagaYuji KozawaYasutoshi MaedaKatsuya Mitsutake
    • Takanori HisanagaYuji KozawaYasutoshi MaedaKatsuya Mitsutake
    • G06F13/00H04L12/00
    • H04L47/10
    • The present invention provides a data transmission system having a data sending unit, a data receiving unit and a data transmission medium for data transmission from the data sending unit to the data receiving unit, which comprises an element for generating feature information of data transmission from the data sending unit to the data receiving unit in advance of execution of the data transmission, an element for storing change of states of use of a bandwidth by data transmission now under execution, an element for predicting a time of completion of the data transmission now under execution based on the change of states of use of the bandwidth and the feature information of the data transmission now under execution, an element for determining a transmission rate for data transmission to be next executed at the time of completion of the data transmission now under execution based on the change of states of use of the bandwidth and the feature information of the data transmission to be next executed, and an element for executing the data transmission to be next executed from the data sending unit according to the transmission rate at the time of completion of the data transmission now under execution.
    • 本发明提供了一种具有数据发送单元,数据接收单元和用于从数据发送单元向数据接收单元进行数据传输的数据传输介质的数据传输系统,其包括用于从 数据发送单元在数据发送执行之前发送到数据接收单元,用于通过现在正在执行的数据传输来存储带宽使用状态的改变的元素,用于预测当前数据传输完成时间的元素 基于现在正在执行的数据传输的使用状态的变化和执行中的数据传输的特征信息的执行的执行,用于确定在执行中的数据传输完成时下一次执行的数据传输的传输速率的元件 基于带宽的使用状态的变化和数据传输的特征信息 以及用于根据在执行中的数据传输完成时的传输速率从数据发送单元执行下一次执行数据传输的单元。
    • 8. 发明授权
    • Apparatus for and method of transmitting data
    • 数据传输装置及方法
    • US5896413A
    • 1999-04-20
    • US861561
    • 1997-05-22
    • Kouichi YoshimuraTakanori HisanagaYuji KozawaKatsuya Mitsutake
    • Kouichi YoshimuraTakanori HisanagaYuji KozawaKatsuya Mitsutake
    • H04L29/14H04B1/38H04L12/70
    • H04L1/1864
    • A contention control system unitarily manages a plurality of data transmissions so as to avoid contention therebetween. Data transmission command sending equipment of a data receiver continuously sends data transmission commands to a data sender according to a data transmission request. Data transmission-command receive control equipment receives the first valid one of the continuously-delivered data transmission commands therein and delivers it to data transmission control equipment. Correspondingly, data sending equipment starts to transmit data. Data transmission monitoring equipment of the data receiver monitors the state of transmission of the data. When the data transmission corresponding to the data transmission commands is made, the data transmission monitoring equipment detects it and notifies the result of detection to data transmission-command transmit control equipment, which in turns terminates the notification of the data transmission commands in response to its notification delivered from the data transmission monitoring equipment. Thus, a reduction in the efficiency of bandwidth utilization at the time that transmission errors are produced in the notification of the above commands can be restrained.
    • 竞争控制系统一体地管理多个数据传输,以避免它们之间的争用。 数据接收机的数据传输命令发送设备根据数据传输请求不断向数据发送方发送数据传输命令。 数据传输命令接收控制设备接收其中连续发送的数据传输命令中的第一个有效的一个,并将其传送到数据传输控制设备。 相应地,数据发送设备开始传输数据。 数据接收机的数据传输监控设备监控数据传输的状态。 当进行与数据传输命令相对应的数据传输时,数据传输监控设备检测并将其检测结果通知给数据传输命令发送控制设备,数据传输命令发送控制设备又响应于其发送命令的通知 数据传输监控设备提供通知。 因此,可以抑制在上述命令的通知中产生传输错误时的带宽利用效率的降低。