公开(公告)号：US5031180A

公开(公告)日：1991-07-09

申请号：US336499

申请日：1989-04-11

Applicant: George W. McIver ,  John R. Marum ,  James B. Cho

Inventor： George W. McIver ,  John R. Marum ,  James B. Cho

IPC: G06F11/18

CPC classification number: G06F11/183

Abstract: A fault tolerant register employing triple redundant storage of data and continuous voting to protect the data from Single Event Upset, or SEU. The fault tolerant register includes a single master multiplexer, three slave multiplexers connected in parallel to the output of the master multiplexer and three voting circuits positioned in feedback paths of the slave multiplexers. The slave multiplexers provide triple redundant storage for the data and the voting circuits correct any data that might become disrupted. The fault tolerant register of the present invention provides greatly improved SEU tolerance without a large increase in circuit area or without resorting to error correction and its attendant scrubbing process.

Abstract translation: 一个容错寄存器，采用三重数据冗余存储和连续投票，以保护单事件不正常或SEU的数据。 容错寄存器包括单个主复用器，与主复用器的输出并联连接的三个从属多路复用器和位于从属多路复用器的反馈路径中的三个投票电路。 从属多路复用器为数据提供三重冗余存储，并且投票电路可以纠正任何可能中断的数据。 本发明的容错寄存器提供大大提高的SEU容限，而不会大大增加电路面积，或者不采用纠错及其伴随的擦洗过程。

公开(公告)号：US07781915B2

公开(公告)日：2010-08-24

申请号：US11695772

申请日：2007-04-03

Applicant: Harold H. Webber ,  John R. Marum

Inventor： Harold H. Webber ,  John R. Marum

IPC: H04B3/00

CPC classification number: G06F1/266 ,  H04L12/10

Abstract: Apparatus for delivering operating power from a data terminus to a utilization device includes a first data connection connecting the data terminus to a data repeater station and a second data connection connecting the data repeater station to the utilization device. A first power sourcing equipment delivers DC operating power to the data repeater station over a physical layer of the first data connection. A second power sourcing equipment at the repeater station receives operating power over the physical layer of the first data connection and delivers operating power over a physical layer of the second data connection to the utilization device.

Abstract translation: 用于从数据终端向利用装置传送工作电力的装置包括将数据终端连接到数据中继站的第一数据连接和将数据中继站连接到利用装置的第二数据连接。 第一个电源设备通过第一个数据连接的物理层向数据中继站提供直流工作电源。 中继站上的第二电源设备通过第一数据连接的物理层接收工作电力，并将第二数据连接的物理层上的工作电力传送到利用装置。

公开(公告)号：US06553062B1

公开(公告)日：2003-04-22

申请号：US09140716

申请日：1998-08-26

Applicant: John R. Marum

Inventor： John R. Marum

IPC: H04B138

CPC classification number: H04L5/1446 ,  H04L1/0002 ,  Y02D50/10

Abstract: An apparatus and method for automatically selecting different data rates for communicating data over a high bit rate, digital signal line (HDSL) line such as a dry pair line. In one embodiment master/slave interface circuits at opposite ends of a line attempt to establish communications at a higher frequency. If this fails, communications are attempted at a lower frequency. If communications are successful at the higher frequency and communications continue for a predetermined period of time at the higher frequency and then communications fail, an attempt is made to reestablish communications at the higher frequency. An algorithm is set forth for enabling selecting among a plurality of different speeds.

Abstract translation: 一种用于自动选择用于通过高比特率，数字信号线（HDSL）线（例如干线对）传送数据的不同数据速率的装置和方法。 在一个实施例中，线路的相对端处的主/从接口电路尝试以更高的频率建立通信。 如果失败，则尝试以较低的频率进行通信。 如果通信在较高频率下成功，并且通信以较高频率继续预定时间段，然后通信失败，则尝试以较高频率重新建立通信。 提出了一种用于使得能够在多个不同速度之间进行选择的算法。

公开(公告)号：US5297141A

公开(公告)日：1994-03-22

申请号：US814888

申请日：1991-12-27

Applicant: John R. Marum

Inventor： John R. Marum

IPC: H04L12/413 ,  H04L12/40 ,  H04B10/20

CPC classification number: H04L12/40013 ,  H04L12/40169 ,  Y10T307/729

Abstract: An Ethernet adapter card for automatically switching a workstation into a network is provided. The adapter card utilizes a current circuit to sense current drawn by an external communications network and a circuit for automatically switching between a card-mounted internal transceiver and the network's external transceiver whenever the external network is coupled to the workstation via an AUI port. The adapter card provides for default selection of the internal transceiver when the external communication network is disconnected from the workstation AUI port.

Abstract translation: 提供了一个用于将工作站自动切换到网络中的以太网适配卡。 当外部网络通过AUI端口耦合到工作站时，适配器卡利用电流电路来感测由外部通信网络和由卡安装的内部收发器与网络的外部收发器之间自动切换的电流。 当外部通信网络与工作站AUI端口断开连接时，适配器卡提供内部收发器的默认选择。

公开(公告)号：US4928022A

公开(公告)日：1990-05-22

申请号：US74608

申请日：1987-07-17

Applicant: John R. Marum

Inventor： John R. Marum

IPC: G06F11/20 ,  G06F13/00 ,  G06F15/16 ,  G06F15/177 ,  G11C29/00

CPC classification number: G06F11/2007 ,  G11C29/006

Abstract: Switching circuitry for automatically connecting two sets of terminals in two circuit modules, through a larger set of conductors, some of which may be defective or unavailable for other reasons. The circuitry includes two identical switching matrices, each of which receives signals indicative of the availability status of the conductors, and connects the terminals to an available subset of the conductors. Each switching matrix has an array of switching cells arranged in such a manner that a cell will connect a terminal to a conductor unless the conductor is not available, or unless the same terminal has already been assigned to another conductor, or the same conductor has already been assigned to another terminal.

公开(公告)号：US20120164877A1

公开(公告)日：2012-06-28

申请号：US12980299

申请日：2010-12-28

Applicant: Patrick J. Wallace ,  Daran G. Hermans ,  John R. Marum ,  Harold H. Webber

Inventor： Patrick J. Wallace ,  Daran G. Hermans ,  John R. Marum ,  Harold H. Webber

IPC: H01R13/60 ,  H01R43/00

CPC classification number: H04L12/2898 ,  Y10T29/49117

Abstract: An access point which is installed over the standard electronic wall box and provides access to different types of existing cables in a standard electronic wall box is disclosed. The access point includes at least one pass-through slot which houses a pass-through port. The pass-through port supports different types of connectors for different types of cables installed in the standard electronic wall box. The pass-through slot is used to expose the different types of connectors on the access point. The access point also includes a connection port to connect the access point to a wall cable which is a network uplink cable for connecting the access point to a network. The access point further includes an expansion slot to connect an expansion module to the access point. When the access point is installed on the standard electronic wall box, the pass-through slot is used to expose a cable that is different from the wall cable.

Abstract translation: 公开了一种安装在标准电子墙箱上并提供对标准电子墙箱中不同类型的现有电缆的接入点。 接入点包括至少一个容纳通过端口的直通槽。 通过端口支持不同类型的连接器，用于安装在标准电子墙箱中的不同类型的电缆。 直通槽用于暴露接入点上不同类型的连接器。 接入点还包括将接入点连接到作为用于将接入点连接到网络的网络上行链路电缆的墙壁电缆的连接端口。 接入点还包括用于将扩展模块连接到接入点的扩展槽。 当接入点安装在标准电子墙箱上时，通过槽用于暴露与墙壁电缆不同的电缆。

公开(公告)号：US5930312A

公开(公告)日：1999-07-27

申请号：US845560

申请日：1997-04-24

Applicant: John R. Marum

Inventor： John R. Marum

IPC: H04L1/00 ,  H04L5/14 ,  H04L23/00

CPC classification number: H04L5/1446 ,  H04L1/0002 ,  Y02B60/31

Abstract: An apparatus and method for automatically selecting different data rates for communicating data over a high bit rate, digital signal line (HDSL) line such as a dry pair line. In one embodiment master/slave interface circuits at opposite ends of a line attempt to establish communications at a higher frequency. If this fails, communications are attempted at a lower frequency. If communications are successful at the higher frequency and communications continue for a predetermined period of time at the higher frequency and then communications fail, an attempt is made to reestablish communications at the higher frequency. An algorithm is set forth for enabling selecting among a plurality of different speeds.

Abstract translation: 一种用于自动选择用于通过高比特率，数字信号线（HDSL）线（例如干线对）传送数据的不同数据速率的装置和方法。 在一个实施例中，线路的相对端处的主/从接口电路尝试以更高的频率建立通信。 如果失败，则尝试以较低的频率进行通信。 如果通信在较高频率下成功，并且通信以较高频率继续预定时间段，然后通信失败，则尝试以较高频率重新建立通信。 提出了一种用于使得能够在多个不同速度之间进行选择的算法。

公开(公告)号：US4800302A

公开(公告)日：1989-01-24

申请号：US74602

申请日：1987-07-17

Applicant: John R. Marum

Inventor： John R. Marum

IPC: G06F11/20 ,  H03K19/003

CPC classification number: G06F11/1666 ,  G06F11/20

Abstract: An electronic system having multiple identical subsystems, some of which can be excluded from the system when defective or held as spares. A mapping circuit associated with each subsystem has a first register for storing a physical address of the subsystem and a second register for storing a logical address. To configure the system to include a selection of subsystems, pairs of physical and corresponding logical addresses are transmitted to the subsystem mapping circuits. When a transmitted physical address matches the address stored in the first register, the second register is enabled to receive a transmitted logical address. The mapping of physical to logical address is therefore distributed among all of the subsystems rather than being handled in a central mapping unit. Subsystems that are to remain out of service have a null address stored in their second registers. In normal operation of the entire system, a logical address transmitted to the subsystems is compared with the logical address stored in each second register, and only the matching subsystem is selected for operation.

Abstract translation: 具有多个相同子系统的电子系统，其中一些子系统在有缺陷或作为备件保存时可以从系统中排除。 与每个子系统相关联的映射电路具有用于存储子系统的物理地址的第一寄存器和用于存储逻辑地址的第二寄存器。 为了配置系统以包括子系统的选择，物理和对应逻辑地址的对被传送到子系统映射电路。 当发送的物理地址与存储在第一寄存器中的地址相匹配时，第二寄存器被允许接收发送的逻辑地址。 因此，物理到逻辑地址的映射分布在所有子系统中，而不是在中央映射单元中处理。 要保持停用的子系统在其第二个寄存器中存储一个空地址。 在整个系统的正常操作中，将发送到子系统的逻辑地址与存储在每个第二寄存器中的逻辑地址进行比较，并且仅选择匹配子系统进行操作。