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1. 发明授权

US5444695A Token ring local area network testing apparatus providing station history information 失效
标题翻译：令牌环局域网测试仪提供站历史信息
公开(公告)号：US5444695A
公开(公告)日：1995-08-22
申请号：US3244
申请日：1993-01-11
申请人： Mark Copley , David G. Fish , Chris L. Odell , Charles H. Whiteside
发明人： Mark Copley , David G. Fish , Chris L. Odell , Charles H. Whiteside
IPC分类号： H04L12/26 , H04L12/433
CPC分类号： H04L43/50 , H04L12/2697 , H04L12/433
摘要： A token ring local area network (LAN) testing apparatus is provided. The apparatus monitors history or status of token ring stations. Such information is useful in isolating token ring faults that may occur during its operation. The apparatus includes current and past memory lists that contain status information for each token ring station. The current station memory list contains addresses of all token ring stations that are present during a current neighbor notification process. The last station memory list contains addresses of all token ring stations that were present in the token ring during the neighbor notification process that was previous to the current neighbor notification process. A neighbor notification process is a conventional part of the token ring media access control (MAC) protocol. Included with the addresses in these lists is a determined one of a number of state characters that is indicative of station status. The state character for each token ring station is determined using predetermined algorithms that are based on the presence/absence of stations in the token ring.
摘要翻译：提供令牌环局域网（LAN）测试设备。该设备监视令牌环站的历史或状态。这样的信息可用于隔离在其操作期间可能发生的令牌环故障。该装置包括包含每个令牌环站的状态信息的当前和过去的存储器列表。当前站内存列表包含在当前邻居通知过程中存在的所有令牌环站的地址。最后一个站内存列表包含在当前邻居通知过程之前的邻居通知过程中存在于令牌环中的所有令牌环站的地址。邻居通知过程是令牌环媒体访问控制（MAC）协议的常规部分。包括在这些列表中的地址是指示站状态的多个状态字符中的确定的一个。使用基于令牌环中的站的存在/不存在的预定算法来确定每个令牌环站的状态字符。

2. 外观设计

USD353342S Token ring local area network tester 失效
公开(公告)号：USD353342S
公开(公告)日：1994-12-13
申请号：US7767
申请日：1993-04-30
申请人： Indle G. King , Roger L. Howell , Chris L. Odell , Jeffrey T. Samson , Harry B. Taylor , Steven W. Fisher
设计人： Indle G. King , Roger L. Howell , Chris L. Odell , Jeffrey T. Samson , Harry B. Taylor , Steven W. Fisher

3. 发明授权

US5425017A Token ring local area network testing apparatus inserted in an active "T" c o 失效
标题翻译：令牌环局域网测试仪器插入活动的“T”配置
公开(公告)号：US5425017A
公开(公告)日：1995-06-13
申请号：US3239
申请日：1993-01-11
申请人： Mark Copley , David G. Fish , Gordon A. Jensen , Chris L. Odell , Charles H. Whiteside , Thomas S. Wisdom, Jr.
发明人： Mark Copley , David G. Fish , Gordon A. Jensen , Chris L. Odell , Charles H. Whiteside , Thomas S. Wisdom, Jr.
IPC分类号： H04L12/26 , H04L12/433 , H04J3/14
CPC分类号： H04L43/50 , H04L12/2697 , H04L12/433
摘要： A testing apparatus for token ring local area networks (LANs) which can insert into the token ring network without requiring a separate port on a media access unit (MAU). The testing apparatus of the present invention is connected between a regular network station and the MAU. The testing apparatus is insertable into the network through the MAU, and the regular network station is able to insert into the network through the testing apparatus. Once inserted, the regular network station and the testing apparatus act as separate stations in series on the LAN. Due to its central position in this configuration, the testing apparatus is able to test for possible faults that might be present in the network and/or in the station to which it is connected. In addition, since the testing apparatus does not require a separate port on the MAU, no active user on the network needs to be disconnected for any extended period of time.
摘要翻译：用于令牌环局域网（LAN）的测试设备，其可以插入到令牌环网络中，而不需要媒体接入单元（MAU）上的单独端口。本发明的测试装置连接在常规网络站和MAU之间。测试装置可以通过MAU插入网络，普通网络台可以通过测试设备插入网络。一旦插入，常规网络站和测试设备在LAN上串联起来作为单独的站。由于其在该配置中的中心位置，测试装置能够测试可能存在于网络和/或其所连接的站中的故障。另外，由于测试装置不需要MAU上的单独端口，因此网络上的活动用户不需要长时间断开连接。

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