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1. 发明授权

US4491946A Multi-station token pass communication system 失效
标题翻译：多站令牌通过通信系统
公开(公告)号：US4491946A
公开(公告)日：1985-01-01
申请号：US241688
申请日：1981-03-09
申请人： J. Michael Kryskow, Jr. , Jeffery J. Bobzin , Bruce S. Allen
发明人： J. Michael Kryskow, Jr. , Jeffery J. Bobzin , Bruce S. Allen
IPC分类号： G06F13/00 , G06F3/00 , H04L12/417 , H04J6/02
CPC分类号： H04L12/417
摘要： A data communication system is disclosed that utilizes a synchronized serial bus for communication between multiple stations connected to the bus. A token is employed such that when owned by a station it allows that station to transmit high level messages over the bus and command other stations to transmit high level messages to it if required by the token owner. Fundamental events called primitives are perceived by stations. Each station capable of token ownership embodies the same set of rules, the rules in turn defining the circumstances when perceived events cause a station to change from one state to another.Fundamental sets of rules, or modules, are used in the communication system to achieve a system for the automatic generation of a token list of stations with periodic ownership of the token, as well as for expansion or contraction of this token list. In addition, automatic change in the token pass handshake protocol is described.The communication system allows bus interconnection to stations having no potential token access, with communication control provided by master stations which have token ownership capability.
摘要翻译：公开了一种数据通信系统，其利用同步的串行总线来连接到总线的多个站之间进行通信。使用令牌，使得当由站所拥有时，它允许该站通过总线传送高级消息，并且命令其他站以在令牌所有者需要时向其发送高级消息。称为原语的基础事件被电台感知。每个能够进行标记所有权的站都体现了相同的规则集，规则反过来又定义了当感知到的事件导致一个站点从一个状态变为另一个状态时的情况。在通信系统中使用基本的规则集或模块来实现用于自动生成具有令牌的周期性所有权的站的令牌列表的系统以及用于扩展或收缩该令牌列表的系统。此外，描述令牌通过握手协议的自动更改。通信系统允许总线互连到没有潜在的令牌访问的站，具有由拥有令牌所有权的主站提供的通信控制。

2. 发明授权

US4506360A Multi-station token pass communication system and method 失效
标题翻译：多站令牌通过通信系统和方法
公开(公告)号：US4506360A
公开(公告)日：1985-03-19
申请号：US363090
申请日：1982-03-29
申请人： J. Michael Kryskow, Jr. , Allan Tanzman
发明人： J. Michael Kryskow, Jr. , Allan Tanzman
IPC分类号： H04L12/417 , H04J6/00
CPC分类号： H04L12/417
摘要： A data communications system is disclosed which uses a passive communications medium such as coaxial cable for communication between multiple stations connected to the bus. A token concept is employed such that when the token is owned by a station, it allows that station to transmit high level messages over the bus and to command, if desired, other stations to transmit high level messages to it. The communications system is primarily masterless with each station capable of token ownership using the same set of rules to determine the circumstances when perceived events by the station cause that station to change state. Improvements are presented in the initialization of a token list, the addition of stations to an existing token list, duplicate station address protection through random numbers associated with each station, power down patch out of a station from the token list, the joining of two networks (two token lists), timer period randomization, and the use of redundant communication mediums.
摘要翻译：公开了一种数据通信系统，其使用诸如同轴电缆的无源通信介质来连接到总线的多个站之间进行通信。使用令牌概念，使得当令牌由站拥有时，其允许该站通过总线传送高级消息，并且如果需要，命令其他站向其发送高级消息。通信系统主要是无障碍的，每个站能够使用相同的一组规则进行令牌所有权，以确定当车站感知到的事件导致该站改变状态时的情况。在令牌列表的初始化中增加了改进，将现有的令牌列表添加到站，通过与每个站相关联的随机数来复制站地址保护，从令牌列表中的站中的掉电补丁，加入两个网络（两个令牌列表），定时器周期随机化以及冗余通信介质的使用。

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