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1. 发明授权

US5526355A Method and apparatus for use in a network of the ethernet type, to improve performance by reducing the occurrence of collisions in the event of channel capture 失效
标题翻译：在以太网类型的网络中使用的方法和装置，通过减少在通道捕获的情况下发生碰撞来提高性能
公开(公告)号：US5526355A
公开(公告)日：1996-06-11
申请号：US447283
申请日：1995-05-22
申请人： Henry S. Yang , Kadangode K. Ramakrishnan , William R. Hawe , Anthony G. Lauck
发明人： Henry S. Yang , Kadangode K. Ramakrishnan , William R. Hawe , Anthony G. Lauck
IPC分类号： H04L12/413 , H04J3/14
CPC分类号： H04L12/413
摘要： A technique for modifying the IEEE 802.3 standard for selecting transmit-to-transmit interpacket gap (IPG) intervals in a Carrier Sense Multiple Access with Collision Detection (CSMA/CD) network, to provide fairness and good channel utilization in the event that a node has captured the network communication channel. If there is a small number of active nodes on the network, one node may capture the channel and the standard backoff algorithm makes it increasingly unlikely for another node to transmit. The new technique provides for use of a longer interpacket gap (IPG) interval to be used by a node that has been initially unsuccessful in contention for the channel, thereby ensuring that the other node may continue to transmit back-to-back data packets without interruption or collision. After a preselected time interval, the nodes reverse their roles by selecting the opposite IPG intervals. The initial receiver now selects the shorter IPG interval and captures the channel for the preselected time interval.
摘要翻译：一种用于在具有冲突检测（CSMA / CD）网络的载波侦听多路访问（CSMA / CD）网络中修改IEEE 802.3标准以选择发射到发送分组间隙（IPG）间隔的技术，以在节点已经捕获了网络通信通道。如果网络上存在少量活动节点，则一个节点可以捕获该信道，并且标准退避算法使得另一节点不太可能传输。新技术提供了使用较早的间隔间隔（IPG）间隔来使用，该节点最初不成功地用于信道的争用，从而确保其他节点可以继续传送背对背数据分组而不用中断或碰撞。在预选的时间间隔之后，节点通过选择相反的IPG间隔来反转其角色。初始接收机现在选择较短的IPG间隔，并捕获预选时间间隔的通道。

2. 发明授权

US5418784A Method and apparatus for use in a network of the ethernet type, to improve fairness by controlling the interpacket gap in the event of channel capture 失效
标题翻译：在以太网类型的网络中使用的方法和装置，通过在信道捕获的情况下控制分组间隙来改善公平性
公开(公告)号：US5418784A
公开(公告)日：1995-05-23
申请号：US86443
申请日：1993-06-30
申请人： Kadangode K. Ramakrishnan , Henry S. Yang , William R. Hawe , Anthony G. Lauck
发明人： Kadangode K. Ramakrishnan , Henry S. Yang , William R. Hawe , Anthony G. Lauck
IPC分类号： H04L12/413 , H04J3/14
CPC分类号： H04L12/413
摘要： A technique for modifying the IEEE 802.3 standard for selecting transmit-to-transmit interpacket gap (IPG) intervals in a Carrier Sense Multiple Access with Collision Detection (CSMA/CD) network, in the event that a node has captured the network communication channel. If there is a small number of active nodes on the network, one node may capture the channel and the standard backoff algorithm makes it increasingly unlikely for another node to transmit. The new technique provides for less aggressive, i.e. longer, interpacket gap (IPG) intervals to be used by a node that has captured the channel, thereby increasing the likelihood that another node will gain access.
摘要翻译：在节点已经捕获了网络通信信道的情况下，修改用于在具有冲突检测（CSMA / CD）网络的载波侦听多路访问中选择发送到发送分组间隙（IPG）间隔的IEEE 802.3标准的技术。如果网络上存在少量活动节点，则一个节点可以捕获该信道，并且标准退避算法使得另一节点不太可能传输。新技术提供了较少的积极性，即较长的间隔间隔（IPG）间隔，以被捕获信道的节点使用，从而增加了另一个节点获得访问的可能性。

3. 发明授权

US5436903A Method and apparatus for use in a network of the ethernet type, to improve fairness by controlling collision backoff times and using stopped backoff timing in the event of channel capture 失效
标题翻译：用于以太网类型的网络的方法和装置，通过控制冲突回退时间来提高公平性，并在通道捕获的情况下使用停止的退避时间
公开(公告)号：US5436903A
公开(公告)日：1995-07-25
申请号：US263698
申请日：1994-06-22
申请人： Henry S. Yang , Kadangode K. Ramakrishnan , Anthony G. Lauck
发明人： Henry S. Yang , Kadangode K. Ramakrishnan , Anthony G. Lauck
IPC分类号： H04L12/413
CPC分类号： H04L12/413
摘要： A technique for modifying the IEEE 802.3 standard for selecting backoff times in a Carrier Sense Multiple Access with Collision Detection (CSMA/CD) network, in the event that a collision is sensed by a node that has captured the network communication channel. If there is a small number of active nodes on the network, one node may capture the channel and the standard backoff algorithm makes it increasingly unlikely for another node to transmit. The new technique provides for less aggressive, i.e. longer, backoff times before at least the first retransmission attempt made by a node that has captured the channel, and in addition provides for the use of a stopped backoff algorithm. Three specific examples of methods to choose a backoff time and two methods of using a stopped backoff algorithm are disclosed. Even though the invention represents a departure from the standard CSMA/CD backoff algorithm, the overall average backoff times provided by the invention can be selected to be consistent with the average times provided by the standard. Moreover, nodes using the invention interoperate successfully with nodes that do not use the invention.
摘要翻译：在捕获网络通信信道的节点感测到冲突的情况下，修改用于在具有冲突检测（CSMA / CD）网络的载波侦听多路访问中选择退避时间的IEEE 802.3标准的技术。如果网络上存在少量活动节点，则一个节点可以捕获该信道，并且标准退避算法使得另一节点不太可能传输。该新技术在至少捕获了该信道的节点进行的第一次重传尝试之前提供较少的侵略性，即更长的退避时间，并且还提供了使用停止的退避算法。公开了选择退避时间的方法的三个具体示例和使用停止退避算法的两种方法。即使本发明代表与标准CSMA / CD退避算法的偏离，本发明提供的整体平均退避时间可以被选择为与标准提供的平均时间一致。此外，使用本发明的节点与不使用本发明的节点成功地相互操作。

4. 发明授权

US5546543A Method for assigning priority to receive and transmit requests in response to occupancy of receive and transmit buffers when transmission and reception are in progress 失效
标题翻译：用于在发送和接收进行时响应于接收和发送缓冲器的占用而分配接收和发送请求的优先级的方法
公开(公告)号：US5546543A
公开(公告)日：1996-08-13
申请号：US37287
申请日：1993-03-26
申请人： Henry S. Yang , Kadangode K. Ramakrishnan , Gady Daniely , Aviad Wertheimer
发明人： Henry S. Yang , Kadangode K. Ramakrishnan , Gady Daniely , Aviad Wertheimer
IPC分类号： G06F13/30 , G06F13/362 , G06F13/14
CPC分类号： G06F13/30 , G06F13/362
摘要： An arbiter of an I/O controller implements an arbitration process for controlling bi-directional data flow between a local area network and a main memory connected to a system bus having variable latency. A receive state machine of the controller manages inbound data bursts from the network by temporarily storing the data in a receive buffer before transfer to the main memory. Outbound data bursts from the main memory are managed by a transmit state machine of the controller, and are temporarily stored in a transmit buffer prior to transmission onto the network. The arbitration process assigns each of the receive and transmit state machines priority for accessing the system bus depending upon certain status conditions of the controller. These conditions include: (i) whether one or both of the state machines are contending for access to the system bus; (ii) whether the controller is configured for full-duplex or half-duplex communication over the network; (iii) the current status of the transmit and receive network ports; and (iv) the current state of the receive and transmit buffers.
摘要翻译： I / O控制器的仲裁器实现仲裁过程，用于控制连接到具有可变等待时间的系统总线的局域网与主存储器之间的双向数据流。控制器的接收状态机通过在传送到主存储器之前将数据临时存储在接收缓冲器中来管理来自网络的入站数据突发。来自主存储器的出站数据突发由控制器的发送状态机管理，并且在传输到网络之前临时存储在发送缓冲器中。仲裁过程根据控制器的某些状态条件将接收和发送状态机中的每一个分配给访问系统总线的优先级。这些条件包括：（i）一台或两台状态机是否竞争访问系统总线; （ii）控制器是否配置为通过网络进行全双工或半双工通信; （iii）发送和接收网络端口的当前状态; 和（iv）接收和发送缓冲器的当前状态。

5. 发明授权

US5257264A Automatically deactivated no-owner frame removal mechanism for token ring networks 失效
标题翻译：自动停用令牌环网络的无所有者帧去除机制
公开(公告)号：US5257264A
公开(公告)日：1993-10-26
申请号：US736836
申请日：1991-07-29
申请人： Henry S. Yang , Kadangode K. Ramakrishnan
发明人： Henry S. Yang , Kadangode K. Ramakrishnan
IPC分类号： H04L12/42 , H04L12/433
CPC分类号： H04L12/42 , H04L12/433
摘要： A purging station selected for removal of no-owner frames in a token ring network, and a corresponding method for its operation. The purging station initiates a purge cycle only if the network is not "idle" and, optionally, only if the network is not "near fully loaded," these terms being defined in relation to a token cycle. Therefore, no unnecessary purge marker frames are transmitted onto the network when it is idle or near fully loaded. Once purging is initiated, the purging station transmits at least one purge marker frame onto the ring network, and strips data received from the ring until a purge termination flag is set, upon detection of a received purge marker frame, a received token, or detection of a ring re-initialization procedure.
摘要翻译：选择用于去除令牌环网络中不拥有帧的清除站，以及用于其操作的相应方法。净化站只有在网络不是“空闲”的情况下启动清除循环，并且可选地，只有当网络不是“接近完全加载”时，这些术语是相对于令牌周期定义的。因此，当空闲或接近满载时，不会将不必要的清除标记帧传输到网络上。一旦清除开始，清除站将至少一个清除标记框架发送到环网上，并且在检测到接收到的清除标记帧，接收的标记或检测时，剥离从环接收的数据，直到设置清除终止标志的环重新初始化程序。

6. 发明授权

US5155726A Station-to-station full duplex communication in a token ring local area network 失效
标题翻译：站点到站在一个丁香环本地区网络的全双工通信
公开(公告)号：US5155726A
公开(公告)日：1992-10-13
申请号：US468480
申请日：1990-01-22
申请人： Barry A. Spinney , Henry S. Yang , William R. Hawe
发明人： Barry A. Spinney , Henry S. Yang , William R. Hawe
IPC分类号： H04L5/14 , H04L12/433
CPC分类号： H04L12/433 , H04L5/1423
摘要： A technique for establishing and maintaining full duplex communication between two stations connected to a token ring network, without physically reconfiguring the station connections or otherwise disturbing the network. In an auto-configuration full duplex mode of operation, each station ascertains whether there are only two active stations on the network and, if so, performs an exchange of frames with the other station to establish full duplex communication. One way to ascertain whether only two stations are active is for each station to transmit periodically a neighbor information frame, which contains the indentities of the source station and the source station's nearest upstream neighbor. Once established, full duplex communication can proceed at a greater bandwidth than communication in a token ring network, and without latency delays and distance limitations associated with token ring networks. Periodic checks are made by each station in full duplex communication, to ascertain if the other station is still participating or if any third station has become active. In either case, stations in the auto-configuration mode revert to token ring mode automatically. In a variant form of the invention, stations can operate in a fixed full duplex mode, in which the detection of tokens or third stations are merely reported and do not necessarily result in reversion to the token ring mode.

7. 发明授权

US5414700A Negotiation protocol for establishment of full duplex communication on a token ring network 失效
标题翻译：用于在令牌环网上建立全双工通信的协商协议
公开(公告)号：US5414700A
公开(公告)日：1995-05-09
申请号：US226423
申请日：1994-04-12
申请人： Henry S. Yang , Barry A. Spinney , William R. Hawe , Luc A. Pariseau
发明人： Henry S. Yang , Barry A. Spinney , William R. Hawe , Luc A. Pariseau
IPC分类号： H04L5/14 , H04L12/433 , H04J3/02 , H04L12/28
CPC分类号： H04L12/433 , H04L5/1423
摘要： A technique for establishing and maintaining full duplex communication between two stations connected to a token ring network, without physically reconfiguring the station connections or otherwise disturbing the network. Each station continually performs a two node test to ascertain whether there are only two active stations on the network, and updates a two node flag that indicates whether or only two active stations are present. The two node test uses both upstream neighbor and downstream neighbor addresses to update the two node flag, and requires validation of either one of these addresses if the other one of them appears to have changed since the previous observation. A concurrently running full duplex control process uses the two node flag and other conditions to decide whether to initiate or continue transition to full duplex mode. The control process uses an exchange of full duplex request and acknowledgment frames and completes the transition to full duplex mode when each station has transmitted and received a Restricted Token.
摘要翻译：一种用于在连接到令牌环网络的两个站之间建立和维持全双工通信的技术，而无需物理地重新配置站点连接或以其他方式干扰网络。每个站连续执行两节点测试，以确定网络上是否只有两个活动站，并更新指示是否存在两个活动站的两个节点标志。双节点测试使用上游邻居和下游邻居地址来更新两个节点标志，并且如果从上一次观察看，其中一个似乎已经改变，则需要验证这两个地址之一。同时运行的全双工控制过程使用两个节点标志和其他条件来决定是启动还是继续转换到全双工模式。控制过程使用全双工请求和确认帧的交换，并且当每个站已经发送和接收到限制令牌时，完成向全双工模式的转换。

8. 发明授权

US5305306A Station-to-station full duplex communication in a token ring local area network 失效
标题翻译：令牌环局域网中的站到站全双工通信
公开(公告)号：US5305306A
公开(公告)日：1994-04-19
申请号：US23741
申请日：1993-02-25
申请人： Barry A. Spinney , Henry S. Yang , William R. Hawe
发明人： Barry A. Spinney , Henry S. Yang , William R. Hawe
IPC分类号： H04L5/14 , H04L12/433 , H04J3/02 , H04L12/42
CPC分类号： H04L12/433 , H04L5/1423
摘要： A technique for establishing and maintaining full duplex communication between two stations connected to a token ring network, without physically reconfiguring the station connections or otherwise disturbing the network. In an auto-configuration full duplex mode of operation, each station ascertains whether there are only two active stations on the network and, if so, performs an exchange of frames with the other station to establish full duplex communication. One way to ascertain whether only two stations are active is for each station to transmit periodically a neighbor information frame, which contains the identities of the source station and the source station's nearest upstream neighbor. Once established, full duplex communication can proceed at a greater bandwidth than communication in a token ring network, and without latency delays and distance limitations associated with token ring networks. Periodic checks are made by each station in full duplex communication, to ascertain if the other station is still participating or if any third station has become active. In either case, stations in the auto-configuration mode revert to token ring mode automatically. In a variant form of the invention, stations can operate in a fixed full duplex mode, in which the detection of tokens or third stations are merely reported and do not necessarily result in reversion to the token ring mode.
摘要翻译：一种用于在连接到令牌环网络的两个站之间建立和维持全双工通信的技术，而无需物理地重新配置站点连接或以其他方式干扰网络。在自动配置全双工操作模式下，每个站确定网络上是否只有两个活动站，如果是，则与其他站执行帧建立全双工通信。确定只有两个站是活动的一种方式是每个站周期性地发送包含源站和源站最近的上游邻居的标识的邻居信息帧。一旦建立，全双工通信可以以比令牌环网络中的通信更大的带宽进行，并且没有与令牌环网络相关联的延迟延迟和距离限制。每个台站进行全双工通信进行定期检查，以确定其他站是否仍在参与，或者任何第三站是否已经活动。在任一情况下，自动配置模式下的站自动恢复为令牌振铃模式。在本发明的变型形式中，站可以以固定的全双工模式操作，其中仅报告令牌或第三站的检测，并且不一定导致向令牌环模式的逆转。

9. 发明授权

US5838989A Common interface for a network having different communication media employing a carrier sense multiple access with collision detection (CSMA/CD) protocol 失效
标题翻译：具有使用具有冲突检测（CSMA / CD）协议的载波侦听多路访问的不同通信介质的网络的公共接口
公开(公告)号：US5838989A
公开(公告)日：1998-11-17
申请号：US560173
申请日：1995-11-17
申请人： Jerry D. Hutchison , Henry S. Yang , William C. Mallard, Jr.
发明人： Jerry D. Hutchison , Henry S. Yang , William C. Mallard, Jr.
IPC分类号： H04L12/413 , H04L12/44 , H04L29/06 , G06F13/00
CPC分类号： H04L12/40032 , H04L12/413 , H04L12/44 , H04L29/06 , H04L69/18
摘要： A switchable interface for conveniently coupling a network station of the CSMA/CD type to a network having any of a variety of communication media. The invention provides a single interface connector through which connection may be made directly to a twisted-pair medium, using the 10BASE-T protocol, or to a medium of a different type, through an AUI protocol and an appropriate media attachment unit. The interface connector has pin assignments chosen to minimize adverse effects of misconfiguring the station by connecting to a network having a protocol that is different from the one selected in the switchable interface. In one form of the invention, the switchable interface has the ability to determine the protocol being used by the network to which it is connected, and to switch the interface accordingly. Use of the common interface reduces station equipment cost and provides for increased user convenience, since only a single connector is needed to connect to a variety of media types.
摘要翻译：一种可切换接口，用于将CSMA / CD类型的网络站方便地耦合到具有各种通信介质中的任何一种的网络。本发明提供了一个单一接口连接器，通过AUI协议和适当的媒体连接单元，通过它可以使用10BASE-T协议或通过不同类型的介质将连接直接连接到双绞线介质。接口连接器具有选择的引脚分配，以通过连接到具有不同于在可切换接口中选择的协议的网络的网络来最小化错误地配置站的不利影响。在本发明的一种形式中，可切换接口具有确定被连接到的网络使用的协议的能力，并相应地切换接口。使用通用接口可降低站设备成本，并提供增加的用户便利性，因为只需要一个连接器来连接各种介质类型。

10. 发明授权

US5481538A Frame removal mechanism for token ring networks using one or more start strip delimiter frames or circulation time interval 失效
标题翻译：使用一个或多个起始条带分隔符帧或循环时间间隔的令牌环网络的帧去除机制
公开(公告)号：US5481538A
公开(公告)日：1996-01-02
申请号：US866958
申请日：1992-04-09
申请人： Henry S. Yang , K. K. Ramakrishnan , Barry Spinney
发明人： Henry S. Yang , K. K. Ramakrishnan , Barry Spinney
IPC分类号： H04L12/433 , H04L12/46
CPC分类号： H04L12/4637 , H04L12/433
摘要： Frame processing apparatus, and a related method for its operation, for use in a station connected to a token ring network, to ensure rapid stripping of frames from the network without reference to source addresses in the frames, and in spite of the possible presence of extraneous no-owner frames on the network. The adverse effects of extraneous no-owner frames are avoided by any of three techniques. First, transmitted information frames are preceded by a start strip delimiter frame and followed by an end strip delimiter frame. The process strips all incoming frames (except tokens and ring initialization frames, which are specially handled), but does not count the stripped frames until the start strip delimiter frame is detected. Therefore, extraneous frames preceding the transmitted information frames will be stripped but not counted, and all of the transmitted frames will be stripped. In another approach, an estimated stripping time is used to terminate stripping. Frame counters are not then needed and extraneous frames will be stripped prior to the desired information frames. A third approach is to preset the transmitted frame count to some selected value, so that more frames will be stripped than were transmitted. Thus, preceding extraneous frames will be stripped, but the end strip delimiter will still terminate stripping and preclude overstripping.
摘要翻译：帧处理装置及其操作的相关方法，用于连接到令牌环网络的站，以确保帧的快速剥离，而不参考帧中的源地址，并且尽管可能存在无线网络上的无人机框架。通过三种技术中的任何一种避免了外来的非所有权框架的不利影响。首先，发送的信息帧之前是开始条带分隔符帧，后跟一个结束条带分隔符帧。该进程将剥离所有传入的帧（除特殊处理的令牌和环初始化帧外），但在检测到起始条带定界符帧之前不计算剥离的帧。因此，发送的信息帧之前的外部帧将被剥离但不被计数，并且所有发送的帧将被剥离。在另一种方法中，使用估计的剥离时间来终止剥离。然后不需要帧计数器，并且在所需信息帧之前将剥离无关帧。第三种方法是将发送的帧计数预设为某些选定的值，以便比传输更多的帧被剥离。因此，以前的外部框架将被剥离，但是终端条带分隔符将仍然终止剥离并排除超标。

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