公开(公告)号：US4160128A

公开(公告)日：1979-07-03

申请号：US918429

申请日：1978-06-23

申请人： Alain G. Texier

发明人： Alain G. Texier

IPC分类号： H04J3/00 ,  H04J3/06 ,  H04J3/24 ,  H04L12/52 ,  H04J3/02

CPC分类号： H04J3/0629 ,  H04J3/24 ,  H04L12/52

摘要： Digital transmission system providing multipoint connections in which a main data transceiver can communicate with a plurality of secondary data transceivers and the secondary data transceivers can each, in turn, communicate with the main data transceiver, transmission occurring via component digital words at certain low rates multiplexed into intermediate rate incoming digital channels which are themselves multiplexed into a high rate incoming highway. The words are given a first partial address in the low to intermediate rate multiplexing step and a second partial address in the intermediate to high rate multiplexing step. A digital switching network is provided for selectively switching the component words from the high rate incoming highway to word positions in a high rate outgoing highway according to their first and second partial addresses. A multipoint unit is connected to the switching network by intermediate rate incoming and outgoing digital channels and the high rate highway. The multipoint unit comprises means for simultaneously transferring the input words assigned to the main transceiver on the intermediate rate incoming digital channel to output word positions assigned to the secondary transceivers on the intermediate rate outgoing digital channel and means for sequentially transferring the input words assigned to the secondary transceivers on the intermediate rate incoming digital channel to output word positions assigned to the main transceiver on the intermediate rate outgoing digital channel.

摘要翻译： 该装置在数字分配器（7）之间建立多点链路，以便连接主数据收发器（1）与多个辅助数据收发器（2-5）。 次级收发器可以与主收发器进行通信。 数据传输在数字线路（10-50）上以低速率传输的数字信封中进行，这些数字信封不同于彼此的倍数，它们根据中间速率双向数字 线（110-130）。 信封的第一位是形成伪随机序列的地址位。 链接到分配器（7）的多点单元（8）使得可以形成与从主收发器接收的包络相同的次级复制信封，因为存在次级收发器，并且将地址位重新分配给次级复制信封作为 目的地二次收发器的功能。

公开(公告)号：US3952162A

公开(公告)日：1976-04-20

申请号：US581081

申请日：1975-05-27

申请人： Alain G. Texier ,  Michel R. Davancens

发明人： Alain G. Texier ,  Michel R. Davancens

IPC分类号： H04J3/00 ,  H04L12/52 ,  H04Q11/04

CPC分类号： H04J3/0611 ,  H04L12/52

摘要： A time division digital switching network comprises first multiplexing means in which first-order digital data channels transmitting words consisting of a given number of bits and having first rates which are different from but multiples of one another undergo a first multiplexing converting them into a second-order digital data channels having a second predetermined rate. Thereafter there are provided second multiplexing means in which the second-order digital channels undergo a second multiplexing converting them into third-order digital data channels having a third predetermined rate. In a digital switching unit having at least one buffer store, the first-order-channel words multiplexed into the third-order channels are grouped at an address whose first part depends upon the second-order channel they occupy in the third-order channel and whose second part depends upon the first-order channel they occupy in the second-order channel. The bits of a given rank of the words of a second-order channel form a pseudorandom sequence having a known period and, therefore, the bits of a given rank of the words of a third-order channel form a number of interleaved pseudorandom sequences. The digital switching unit includes means for separating the interleaved pseudorandom sequences and for deducing from the bits composing them the second part of the address of the words.

摘要翻译： 时分数字交换网络包括第一多路复用装置，其中传送由给定数量的比特组成的具有第一速率的一阶数字数据信道，其中第一速率彼此不同但是彼此的倍数经过第一复用，将它们转换为第二复用装置， 具有第二预定速率的数字数据通道。 此后，提供第二多路复用装置，其中二阶数字信道进行第二复用，将它们转换成具有第三预定速率的三阶数字数据信道。 在具有至少一个缓冲存储器的数字切换单元中，多路复用到三阶信道中的一阶通道字被分组在其第一部分取决于它们在三阶信道中占据的二阶信道的地址， 其第二部分取决于他们在二级渠道中占据的一级渠道。 二阶通道的字的给定秩的位形成具有已知周期的伪随机序列，因此，三阶通道的字的给定秩的位形成交错的伪随机序列的数目。 数字切换单元包括用于分离交织的伪随机序列和从构成它们的比特中排除词的地址的第二部分的装置。