公开(公告)号：US4841523A

公开(公告)日：1989-06-20

申请号：US137801

申请日：1987-12-23

申请人： Daniele Roffinella ,  Maurizio Sposini

发明人： Daniele Roffinella ,  Maurizio Sposini

IPC分类号： H04L12/433 ,  H04L12/64

CPC分类号： H04L12/433 ,  H04L12/64

摘要： A method of accessing a local-area network which allows transmission on a unidirectional ring, of circuit-switched or packet-switched communications organized in hybrid frames, in which overlapping between the beginning of a frame and a residual of the preceding frame which is still to reach its destination is avoided without reporting to a rigid band allotment to the indiviual communications and to a network synchronization system, where a well defined node acts as a master clock. According to the method the individual nodes of the network, access in sequence the transmission line in each frame, maintaining the same order of asynchronous access in the circuit and packet regions. To avoid overlapping between adjacent frames, in the packet region of each frame, starting from an instant preceding by a predetermined time period the end of the frame, the packet transmission by the node which has the right of access at the instant or by the nodes which would have the right of access from that instant to the end of the new frame, is disabled. y

摘要翻译： 一种访问局域网的方法，其允许在单向环上进行传输，组合在混合帧中的电路交换或分组交换通信，其中帧的开始和仍在前一帧的剩余之间重叠 避免到达其目的地，而不需要报告到单独通信的刚性波段分配和网络同步系统，其中良好定义的节点用作主时钟。 根据该方法，网络的各个节点按顺序访问每个帧中的传输线，在电路和分组区域中保持异步访问的相同顺序。 为了避免相邻帧之间的重叠，在每帧的分组区域中，从在帧的结束之前的预定时间段开始的时刻，由即时或由节点具有访问权限的节点的分组传输 这将具有从即时到新帧结束的权限，被禁用。

公开(公告)号：US4696001A

公开(公告)日：1987-09-22

申请号：US817031

申请日：1986-01-08

申请人： Fabrizio Gagliardi ,  Livio Lambarelli ,  Gianfranco Panarotto ,  Daniele Roffinella ,  Maurizio Sposini

发明人： Fabrizio Gagliardi ,  Livio Lambarelli ,  Gianfranco Panarotto ,  Daniele Roffinella ,  Maurizio Sposini

IPC分类号： H04M3/00 ,  H04L12/28 ,  H04L12/437 ,  H04Q3/00 ,  H04J3/14

CPC分类号： H04L12/437 ,  H04L12/28 ,  H04Q3/0079

摘要： The local network comprises a plurality of active nodes (N1 . . . Nn) placed along a folded unidirectional bus (1) which presents a writing branch (1W) and a reading branch (1R). The nodes present means (RR) for network reconfiguration in the presence of a failure, through an isolation of the parts concerned by the failure, through an isolation of the parts concerned by the failure, and for regular service restoration after the repair, and means (GA) for the implementation of an ordered access protocol, which is based on the physical position of the nodes (N1 . . . Nn) and allows hybrid frames to be transmitted through the bus (FIG. 1).

摘要翻译： 本地网络包括沿着呈现写分支（1W）和读分支（1R）的折叠单向总线（1）放置的多个活动节点（N1 ... Nn）。 在存在故障的情况下，节点存在用于网络重新配置的装置（RR），通过故障相关部件的隔离，通过故障相关部件的隔离以及修复之后的常规服务恢复， （GA），用于实现基于节点（N1 ... Nn）的物理位置的有序接入协议，并允许混合帧通过总线发送（图1）。

公开(公告)号：US4663758A

公开(公告)日：1987-05-05

申请号：US768861

申请日：1985-08-23

申请人： Livio Lambarelli ,  Daniele Roffinella ,  Maurizio Sposini

发明人： Livio Lambarelli ,  Daniele Roffinella ,  Maurizio Sposini

IPC分类号： H04L12/407 ,  H04L12/64 ,  H04J3/26

CPC分类号： H04L12/40032 ,  H04L12/407 ,  H04L12/64

摘要： The system comprises a plurality of units arranged along a unidirectional line whereupon information is transmitted relevant to circuit switched and packet switched communications and organized into hybrid frames comprising a region for each communication type. The units comprise devices handling the access to the line which cooperate with one another and with a frame signal generator, centralized or associated with each unit, to implement in distributed way an ordered protocol without collisions in both frame region, based on physical unit location.

摘要翻译： 该系统包括沿着单向线路布置的多个单元，因此与电路交换和分组交换通信有关的信息被传输并被组织成包括用于每种通信类型的区域的混合帧。 这些单元包括处理对彼此协作的线的接入以及与每个单元集中或相关联的帧信号发生器的设备，以基于物理单元位置在两个帧区域中以分布式方式实现有序协议而没有冲突。