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    • 3. 发明授权
    • Data length compensating device for compensating lost cells in packet
data composed of a plurality of cells
    • 用于补偿由多个单元组成的分组数据中的丢失单元的数据长度补偿装置
    • US5657316A
    • 1997-08-12
    • US574245
    • 1995-12-18
    • Tatsuru NakagakiToshio Irie
    • Tatsuru NakagakiToshio Irie
    • H04Q3/00H04J3/14H04L12/851H04L12/927H04L12/951H04L12/953
    • H04J3/14
    • A packet data is formed of a plurality of ATM cells. When cells of the packet data are lost, especially if the packet data is an image or picture signal including synchronous signals, it becomes difficult to reproduce the image or picture on a receiving terminal. A data length compensating device compensates the lost cell. In order to deal with the lost cells lying over between two packets, a data length compensating device includes a lost cell detecting circuit which detects a lost cell to be included in the data according to the sequence number of the plurality of cells, compensation control circuit which outputs compensation information including the number of lost cells to be compensated, and inserting circuit inserts dummy data corresponding to the lost cells to be compensated based on the compensation information.
    • 分组数据由多个ATM信元形成。 当分组数据的小区丢失时,特别是如果分组数据是包括同步信号的图像或图像信号,则难以在接收终端上再现图像或图像。 数据长度补偿装置补偿丢失的单元。 为了处理两个分组之间的丢失的小区,数据长度补偿装置包括:丢失小区检测电路,根据多个小区的序列号检测包含在数据中的丢失小区,补偿控制电路 其输出包括要补偿的单元数目的补偿信息,并且插入电路基于补偿信息插入与要补偿的丢失单元相对应的伪数据。