Digital transmission system
    1.
    发明授权
    Digital transmission system 失效
    数字传输系统

    公开(公告)号:US4679188A

    公开(公告)日:1987-07-07

    申请号:US779639

    申请日:1985-09-24

    CPC分类号: H04L5/1492 H04L5/1423

    摘要: A digital transmission system comprising at least two transmitting-receiving (T/R) units and a single transmission line connected therebetween. One of the T/R units the first transmits a control signal to the other T/R units with which frame synchronization and timing recovery are carried out using the transmitted control signal. At the same time, the other T/R unit inhibits transmission of send signal therefrom to the first T/R unit. Further, the send signal from one T/R unit to the other T/R unit is transmitted in the form of a frame. Each frame includes, at its end portion, a non-signal duration portion.

    摘要翻译: 一种包括至少两个发送接收(T / R)单元和连接在它们之间的单个传输线的数字传输系统。 T / R单元之一首先利用这样传输的控制信号将控制信号发送到执行帧同步和定时恢复的其它T / R单元。 同时,另一个T / R单元禁止发送信号到第一T / R单元。 此外,从一个T / R单元到另一个T / R单元的发送信号以帧的形式发送。 每个帧在其端部包括非信号持续时间部分。

    Initial training apparatus for use in a transmitter and receiver
apparatus
    2.
    发明授权
    Initial training apparatus for use in a transmitter and receiver apparatus 失效
    用于发射机和接收机设备的初始训练装置

    公开(公告)号:US5353305A

    公开(公告)日:1994-10-04

    申请号:US465225

    申请日:1990-02-14

    IPC分类号: H04B3/23 H03H7/30

    摘要: An initial gain of an automatic equalizer is fixed to a predetermined value. Then, the most appropriate gain of the automatic equalizer is determined when a training signal is received by the automatic equalizer. An echo replica signal produced by an echo canceler is multiplied by the value obtained by dividing the most appropriate gain by the initial gain. Thus, the echo replica signal is corrected to cancel the echo signal included in the output of the automatic equalizer. The sampling rate of the A/D converter used in the transmitter and receiver is shifted by a predetermined value from the transmission line rate at an initial training stage. Thereafter, the sampling rate of the A/D converter is determined to be near that of the transmission line.

    摘要翻译: PCT No.PCT / JP89 / 00595 Sec。 371 1990年2月14日第 102(e)1990年2月14日PCT PCT。1989年6月14日PCT公布。 第WO89 / 12934号公报 日期为1989年12月28日。自动均衡器的初始增益固定为预定值。 然后,当自动均衡器接收到训练信号时,确定自动均衡器最合适的增益。 由回波消除器产生的回波复制信号乘以通过将最适当的增益除以初始增益而获得的值。 因此,校正回波复制信号以消除包括在自动均衡器的输出中的回波信号。 在发射机和接收机中使用的A / D转换器的采样率在初始训练阶段从传输线路速率偏移预定值。 此后,A / D转换器的采样率被确定为接近传输线的采样率。

    Digital subscriber line communicating system
    3.
    发明授权
    Digital subscriber line communicating system 有权
    数字用户线通信系统

    公开(公告)号:US07555055B2

    公开(公告)日:2009-06-30

    申请号:US10918071

    申请日:2004-08-13

    IPC分类号: H04B15/00 H04B1/38

    摘要: A digital subscriber line communicating system having a central office and a remote terminal connected through a telephone line, the transmitting side comprising a sliding window transmitting unit for transmitting DMT symbols according to the sliding window through the telephone line to the receiving side, and the receiving side comprising a sliding window receiving unit for receiving DMT symbols according to the sliding window from the transmitting side, the sliding window indicating the phase of cross-talk condition due to a TCM-ISDN transmission at the receiving side, whereby TCM cross-talk can be reduced without largely departing from the standard system.

    摘要翻译: 一种具有通过电话线连接的中心局和远程终端的数字用户线路通信系统,发送侧包括滑动窗口发送单元,用于通过电话线向接收侧发送根据滑动窗口的DMT符号,并且接收 其包括滑动窗口接收单元,用于根据来自发送侧的滑动窗口接收DMT符号,所述滑动窗口指示由于接收侧的TCM-ISDN传输而导致的串扰状态的相位,由此TCM串话可以 在不偏离标准体系的情况下减少。

    Echo canceller and waveform-distortion compensation device
    5.
    发明授权
    Echo canceller and waveform-distortion compensation device 失效
    回波消除器和波形失真补偿装置

    公开(公告)号:US5659609A

    公开(公告)日:1997-08-19

    申请号:US503620

    申请日:1995-07-18

    CPC分类号: H04B3/23

    摘要: An echo canceller is disclosed which generates an echo replica based on a transmit signal to cancel an echo. The echo canceller includes a linear echo canceller circuit for generating an echo replica of the transmit signal in the absence of distortion. The echo canceller further includes a waveform-distortion compensation circuit, coupled with the linear echo canceller circuit, for generating an echo replica for compensating waveform distortion occurred in an echo response when the transmit signal is distorted. In the echo canceller, the echo is canceled by use of the echo replica generated in the linear echo canceller circuit in the absence of distortion in the transmit signal, and is canceled by use of the echo replica generated in the waveform-distortion compensation circuit when the transmit signal is distorted.

    摘要翻译: 公开了一种回波消除器,其基于发送信号产生回波复制以消除回波。 回波消除器包括用于在不存在失真的情况下产生发射信号的回波复制品的线性回波消除器电路。 回波消除器还包括与线性回波消除器电路耦合的波形失真补偿电路,用于产生用于在发送信号失真时在回波响应中发生的波形失真的回波复制品。 在回波消除器中,通过在发送信号中没有失真的情况下,通过使用在线性回波消除器电路中生成的回波副本来消除回波,并且通过使用在波形失真补偿电路中产生的回波复制来解除回波 发送信号失真。

    Circuit for detecting object signal from input signal
    6.
    发明授权
    Circuit for detecting object signal from input signal 失效
    用于从输入信号中检测物体信号的电路

    公开(公告)号:US5471507A

    公开(公告)日:1995-11-28

    申请号:US122500

    申请日:1993-09-28

    摘要: An input analog signal having a periodicity is converted into one-bit digital signals by an A/D converter (42), and the one-bit digital signals are converted into parallel signals by a serial-to-parallel converter (43). A correlation between the parallel signals and a reference signal string is detected by a correlation device (45). When the correlation is detected, a hold circuit (48) holds detection of the correlation and hence outputs a tone signal detection result. With the above simple, low power consumption circuit structure, the tone signal can be detected.

    摘要翻译: PCT No.PCT / JP93 / 00100 Sec。 371日期:1993年9月28日 102(e)日期1993年9月28日PCT 1993年1月28日PCT公布。 公开号WO93 / 15580 日期:1993年5月8日。具有周期性的输入模拟信号由A / D转换器(42)转换成1位数字信号,一位数字信号通过串行到并行转换成并行信号 转换器(43)。 相关装置(45)检测并行信号和参考信号串之间的相关性。 当检测到相关时,保持电路(48)保持相关的检测,从而输出音调信号检测结果。 利用上述简单的低功耗电路结构,可以检测音调信号。

    Workflow management apparatus, workflow management program, and workflow management method
    8.
    发明申请
    Workflow management apparatus, workflow management program, and workflow management method 审中-公开
    工作流管理装置,工作流管理程序和工作流程管理方法

    公开(公告)号:US20060026595A1

    公开(公告)日:2006-02-02

    申请号:US11003462

    申请日:2004-12-06

    IPC分类号: G06F9/46

    CPC分类号: G06F8/71 G06Q10/10

    摘要: A workflow management apparatus that manages a plurality of processes constituting a workflow, comprises: an I/O information acquisition unit 13 that acquires I/O information defining, in each of the processes, output data obtained as a processing result and input data serving as the data related to processing; a process management unit 14 that allows each of the processes to perform processing based on input data of a currently acquired version number; a version number acquisition unit 15 that acquires information related to version numbers of the input and output data handled in each of the processes; and a state registration unit 11 that registers the state of each of the processes, wherein when the output data in any of the processes is updated, the state registration unit resisters the state of the process including the updated output data in the input data thereof as “Being executed” based on the information related to the acquired I/O information and version number.

    摘要翻译: 一种管理构成工作流程的多个处理的工作流管理装置,包括:I / O信息获取单元13,其获取在每个处理中定义作为处理结果获得的输出数据和作为 与处理有关的数据; 处理管理单元14,其允许每个处理基于当前获取的版本号的输入数据执行处理; 版本号获取单元15,其获取与在每个处理中处理的输入和输出数据的版本号有关的信息; 以及状态登记单元11,其登记每个处理的状态,其中当任何处理中的输出数据被更新时,状态登记单元将其输入数据中包括更新的输出数据的处理的状态保持为 基于与获取的I / O信息和版本号有关的信息“执行”。