公开(公告)号：US06256318B1

公开(公告)日：2001-07-03

申请号：US09140019

申请日：1998-08-26

申请人： Pauric O'Callaghan ,  Nigel Horspool ,  David Law ,  Justin Drummond-Murray ,  Nicholas Stapleton

发明人： Pauric O'Callaghan ,  Nigel Horspool ,  David Law ,  Justin Drummond-Murray ,  Nicholas Stapleton

IPC分类号： H04L12413

CPC分类号： H04L43/0847 ,  H04L12/44 ,  H04L43/06

摘要： The occurrence of collision and activity in a computer network is indicated by activation of a visual indication device. The device is activated for periods which are longer than the actual periods of collision and activity to permit the human eye to register the visual indications. This is particularly useful for high speed networks where the periods of collision and activity may be very brief.

摘要翻译： 通过激活视觉指示装置来指示计算机网络中的碰撞和活动的发生。 该装置被激活的时间长于实际碰撞周期和活动时间，以允许人眼注册视觉指示。 这对于高速网络尤其有用，在这些网络中碰撞和活动的时间段可能很短暂。

公开(公告)号：US06594283B1

公开(公告)日：2003-07-15

申请号：US09203184

申请日：1998-11-30

申请人： Nigel Horspool ,  David Law ,  Quang Tran ,  Patrick Overs

发明人： Nigel Horspool ,  David Law ,  Quang Tran ,  Patrick Overs

IPC分类号： H04L12413

CPC分类号： H04L49/351

摘要： A network communications device is arranged to have a fast throughput of data packets. This is achieved by recognising that, in protocols such as Ethernet, the first symbols in a data packet do not carry any data and therefore do not necessarily require to be properly carried through a communications hub. Rather, a known number of symbols are discarded from the start of a packet on receipt and replaced on re-transmission. This discarding reduces the reception delays particularly in bussed-architecture repeaters where bus arbitration must take place for each received packet.

摘要翻译： 网络通信设备被布置为具有数据分组的快速吞吐量。 这通过认识到，在诸如以太网的协议中，数据分组中的第一个符号不携带任何数据，因此不一定需要通过通信集线器正确地传输。 相反，已知数量的符号从接收到的分组的开始被丢弃并且在重传时被替换。 这种丢弃减少了接收延迟，特别是在总线仲裁必须对每个接收的分组进行总线仲裁时。

公开(公告)号：US06538994B1

公开(公告)日：2003-03-25

申请号：US09286474

申请日：1999-04-06

申请人： Nigel Horspool ,  Paul J. Moran ,  David J. Law ,  Paul Cramphorn

发明人： Nigel Horspool ,  Paul J. Moran ,  David J. Law ,  Paul Cramphorn

IPC分类号： G01R3108

CPC分类号： H04L1/0002 ,  Y02D50/10

摘要： A data connection between two network stations such as an Ethernet hub and an end station which are both capable of exchanging data at the higher of two rates, the higher rate being selected by an auto-negotiation process, is monitored for the occurrence of error represented by a symbol representing the start of a data packet immediately followed by an idle symbol. The rate of occurrence of such errors is compared against a threshold and the speed of the data connection is downgraded to the lower rate.

摘要翻译： 监视两个网络站之间的数据连接，例如以太网集线器和终端站，能够以两个较高的速率交换数据，通过自动协商过程选择的较高速率被表示为出现错误 通过表示紧随其后的空闲符号的数据分组的开始的符号。 将这种错误的发生率与阈值进行比较，并将数据连接的速度降级到较低的速率。

公开(公告)号：US06430192B1

公开(公告)日：2002-08-06

申请号：US09229753

申请日：1999-01-14

申请人： Tadhg Creedon ,  David J. Law ,  Terence D. Lockyer ,  Nigel Horspool

发明人： Tadhg Creedon ,  David J. Law ,  Terence D. Lockyer ,  Nigel Horspool

IPC分类号： H04L1254

CPC分类号： H04L12/4015 ,  H04L12/413 ,  H04L45/742

摘要： A method of operating a repeater for a packet-based data transmission system wherein the repeater has a receiving port associated with a buffer whereby packets received at the port are temporarily stored before they are onwardly transmitted and wherein the repeater performs a contention resolution process such that if an attempted onward transmission of a packet is prevented by virtue of contention with a prior or an existing transmission, a subsequent attempt at transmission of that packet is delayed for a time which is likely to be substantially greater than a selected minimum time. The method includes examining a received packet to determine whether the packet is a multi-media packet, and giving the packet a higher priority in the contention resolution process such that if the packet is not transmitted onwardly owing to contention with a prior transmission, a fresh attempt at transmission of the packet is made on the expiry of the selected minimum time.

摘要翻译： 一种操作用于基于分组的数据传输系统的中继器的方法，其中所述中继器具有与缓冲器相关联的接收端口，由此在端口处接收的分组在它们被向前发送之前被临时存储，并且其中所述中继器执行争用解决过程，使得 如果通过与先前或现有传输的竞争来防止分组的尝试向前传输，则后续的该分组的传输尝试被延迟一段可能显着大于所选择的最小时间的时间。 该方法包括检查接收的分组以确定分组是否是多媒体分组，并且在争用解决过程中给予分组更高的优先级，使得如果分组由于与先前传输的竞争而不在内部传输，则新鲜的 在所选择的最小时间期满时尝试发送分组。