-
公开(公告)号：US5604735A
公开(公告)日：1997-02-18
申请号：US440088
申请日：1995-05-12
CPC分类号： H04L49/351 , H04L12/52 , H04L49/101 , H04L49/205 , H04L49/25 , H04L49/254
摘要： The present invention provides an improvement in circuit switching for a network comprising a switching apparatus including a plurality of transceivers for interfacing directly with a like plurality of nodes. Each of the transceivers has a receive and transmit through port for passing data to and from nodes. Transmitted data includes a connect/disconnect sequence, a first wait sequence, and user data. The switching apparatus further includes circuitry for isolating each transceiver so as to loop back data when not in use and a switching matrix for directly connecting any pair of transceivers. Each of the transceivers includes circuitry for detecting a connect and disconnect sequence and an interface for connection to a serial asynchronous receiver to derive node requests, routing data, priority and other information from the connect sequence detected at the transceiver. Derived switch configuration requests are processed by a node route control state machine, with each node route control state machine integrated in a bus architecture for configuring the matrix switch. A bus arbitration state machine controls the bus architecture servicing bus requests and providing bus grants for the transfer of routing information to switch control logic and a command sequencer. The requesting node may set a priority for a connection request, queue a connection request or alternatively request data from the switch controller micro-controller core.
摘要翻译： 本发明提供了一种用于网络的电路交换的改进，包括包括用于直接与相似多个节点进行接口的多个收发器的交换设备。 每个收发器具有接收和发送端口，用于将数据传送到节点和从节点传送数据。 发送的数据包括连接/断开序列，第一等待序列和用户数据。 开关装置还包括用于隔离每个收发器以便在不使用时回送数据的电路和用于直接连接任何一对收发器的交换矩阵。 每个收发器包括用于检测连接和断开序列的电路以及用于连接到串行异步接收器的接口，以从在收发器处检测到的连接序列导出节点请求，路由数据，优先级和其他信息。 派生交换机配置请求由节点路由控制状态机处理，每个节点路由控制状态机集成在总线架构中，用于配置矩阵切换。 总线仲裁状态机控制总线架构服务总线请求，并提供总线授权，用于将路由信息传输到交换机控制逻辑和命令定序器。 请求节点可以设置连接请求的优先级，对连接请求进行队列，或者替代地从交换机控制器微控制器核心请求数据。
-
公开(公告)号：US5956168A
公开(公告)日：1999-09-21
申请号：US924852
申请日：1997-09-05
CPC分类号： H04B10/2503
摘要： A dual optical fiber transceiver, for use with first and second optical fibers, includes a laser transmitter for transmitting laser light into the first optical fiber, a laser light receiver for receiving laser light from the second optical fiber, and a controller coupled to the laser transmitter and laser light receiver. The controller includes a multi-protocol state machine for establishing the full duplex connection whenever the other device operates in compliance with either (A) a predefined "on-off-on" signaling protocol for establishing full duplex connections, or (B) a second predefined signaling protocol for establishing full duplex connections. In a preferred embodiment, the predefined "on-off-on" signaling protocol is the Open Fiber Control (OFC) protocol and the second predefined signaling protocol is a standard "laser transmitter always on" protocol. In the preferred embodiment, the multi-protocol state machine disables operation of the laser transmitter whenever a loss of light condition is detected by the transceiver's laser light receiver that is not in compliance with the OFC protocol.
摘要翻译： 用于第一和第二光纤的双光纤收发器包括用于将激光发射到第一光纤中的激光发射器，用于从第二光纤接收激光的激光接收器，以及耦合到激光器的控制器 发射器和激光接收器。 控制器包括多协议状态机，用于在其他设备按照（A）用于建立全双工连接的预定义的“开 - 关”信令协议（A）操作时建立全双工连接，或者（B）第二 用于建立全双工连接的预定义信令协议。 在优选实施例中，预定义的“开 - 关”信令协议是开放光纤控制（OFC）协议，第二预定义信令协议是标准的“激光发射机始终处于”协议。 在优选实施例中，多协议状态机每当由不兼容OFC协议的收发器的激光接收器检测到光损失时，就禁用激光发射器的操作。
-
3.发明授权System and method for transmitting data on return path of a cable television system 有权用于在有线电视系统的返回路径上发送数据的系统和方法公开(公告)号：US07778554B2
公开(公告)日：2010-08-17
申请号：US11838165
申请日：2007-08-13
IPC分类号： H04B10/06
CPC分类号： H04N21/615 , H04N7/17309 , H04N7/22 , H04N21/6168
摘要： An optical signal return path system includes a transmitter and a receiver. The receiver receives an optical data signal from the transmitter and recovers therefrom a digital data stream and an associated first clock having an associated first clock rate. The data stream is stored in a memory device at the first clock rate. A clock generator generates a second clock having an associated second clock rate that is adjusted in accordance with a clock control signal. A control circuit reads data from the memory device at a rate corresponding to the second clock rate and generates a fullness signal that indicates whether the memory device is fuller more full than a predefined threshold fullness level. A clock speed adjusting circuit generates the clock control signal in accordance with the fullness signal.
摘要翻译： 光信号返回路径系统包括发射机和接收机。 接收机从发射机接收光学数据信号并从其中恢复数字数据流和相关联的第一时钟具有相关联的第一时钟速率。 数据流以第一时钟速率存储在存储器件中。 时钟发生器产生具有根据时钟控制信号调整的相关联的第二时钟速率的第二时钟。 控制电路以对应于第二时钟速率的速率从存储器件读取数据，并产生指示存储器件是否比预定义的阈值充满度级更充满的丰满度信号。 时钟速度调节电路根据丰满度信号产生时钟控制信号。
-
公开(公告)号：US5566171A
公开(公告)日：1996-10-15
申请号：US404873
申请日：1995-03-15
申请人： Frank H. Levinson
发明人： Frank H. Levinson
CPC分类号： H04L12/52 , H04L49/351 , H04L49/101 , H04L49/205 , H04L49/25 , H04L49/254
摘要： The present invention provides a an improvement in circuit switching for a network comprising a switching apparatus having a plurality of transceivers for interfacing directly with a like plurality of user nodes. Each of the transceivers having a receive and transmit through port for passing data to and from user nodes and a network, said data comprising a connect sequence, a first wait sequence, a routing packet, a second wait sequence, user data, and a disconnect sequence. The switching apparatus further includes means for isolating each transceiver to loop back data when not in use and switching means for directly connecting any pair of transceivers. Finally a switch controller is provided for establishing and prioritizing matrix connections and disconnections, and decoding routing packets. In operation, a requesting node sequentially transmits a connect sequence, routing packet and user data to the network switch assuming node-to-node communication has been established with a target node, whereupon the isolation means loops user data back to the requesting node when the target node is unavailable.
摘要翻译： 本发明提供了一种用于网络的电路交换的改进，包括具有多个收发器的交换设备，用于直接与相似的多个用户节点进行接口。 每个收发器具有接收和发送通过端口用于向用户节点和网络传递数据，所述数据包括连接序列，第一等待序列，路由分组，第二等待序列，用户数据和断开连接 序列。 开关装置还包括用于隔离每个收发器以在不使用时回送数据的装置和用于直接连接任何一对收发器的切换装置。 最后，提供了一个开关控制器，用于建立矩阵连接和断开的优先顺序，以及解码路由分组。 在操作中，请求节点依次将连接序列，路由分组和用户数据发送到网络交换机，假定已经与目标节点建立了节点到节点的通信，因此当隔离装置将用户数据回送到请求节点时 目标节点不可用。
-
公开(公告)号：US5008877A
公开(公告)日：1991-04-16
申请号：US120308
申请日：1987-11-12
申请人： Frank H. Levinson
发明人： Frank H. Levinson
CPC分类号： H04L12/28 , H04L7/0008
摘要： A bus receiver communicates with a bus head end transmitter via a communication path different from read and write optical fibers used by a plurality of remote terminals on the bus so that the bus receiver can quickly determine beginning and end of time slots, clock frequency, and signal trigger levels using a minimum amount of bits attached to a front end of each packet in each time slot.
摘要翻译： 总线接收器通过与总线上的多个远程终端所使用的读写光纤不同的通信路径与总线头端发送器通信，使得总线接收器可以快速地确定时隙的开始和结束，时钟频率和 信号触发电平使用附加到每个时隙中每个数据包前端的最小数量的位。
-
公开(公告)号：US4770529A
公开(公告)日：1988-09-13
申请号：US904750
申请日：1986-09-08
CPC分类号： G01B11/272 , G02B6/3803
摘要： A method of aligning an optical signal source and a waveguide which comprises; directing the signal into the waveguide, monitoring the intensity of the signal backscattered along the waveguide, and altering the relative positions of source and waveguide in response to said intensity.
摘要翻译： 一种对准光信号源和波导的方法，包括： 将信号引导到波导中，监测沿着波导反向散射的信号的强度，以及响应于所述强度改变源极和波导的相对位置。
-
公开(公告)号：US4542502A
公开(公告)日：1985-09-17
申请号：US567350
申请日：1983-12-30
申请人： Frank H. Levinson , John O. Limb
发明人： Frank H. Levinson , John O. Limb
IPC分类号： H04L12/417 , H04J3/00
CPC分类号： H04L12/42 , H04L12/417
摘要： In order to control the transfer of packets of information among a plurality of stations, e.g., digital computers, the instant communications system, station and protocol contemplate first and second oppositely directed signal paths. At least two stations are coupled to both the first and the second signal paths. A station includes arrangements for reading (and writing) signals from (and on) each of the two paths. Signals are read from either path by an arrangement which electrically precedes the arrangement for writing signals on the path. If the station has a packet to transmit, it can overwrite a busy control field of a packet on either path. Also having read a packet signal from the path, a logical interpretation may be made within the station as to whether the path is busy or is not busy. If the path is not busy, the packet may be written on the path by overwriting any signal thereon. If the path is busy, the station may defer the writing until the path is detected as not busy e.g. by reading a busy control field of another packet. Here the two paths are coupled to form two ring structures so the packets flow down the path to a destination station. Eventually all packets will be transmitted and the busy control field loops around to a station which is designated as a control station. The control station, responsive to detecting that all packets have been transmitted on one of the paths, may transmit a start cycle packet on the one path, responsive to which event a new cycle may be started by initializing each station on the one path and by permitting each initialized station to transmit. In the event of an electrical open, the system, station and protocol are adapted to reconfigure the system so that the station electrically preceding the open functions as an end station while the station electrically succeeding the open functions as a head station.
-
公开(公告)号：US09065571B2
公开(公告)日：2015-06-23
申请号：US10929978
申请日：2004-08-30
申请人： Frank H. Levinson
发明人： Frank H. Levinson
CPC分类号： H04B10/40
摘要： A controller for optical components. A controller includes an analog interface that is configured to connect to an optical component external to the controller. The analog interface is able to deliver and/or receive signals to and/or from the optical component. The controller includes a digital interface that is able to connect to a memory external to the controller. The digital interface may receive a digital representation of operating characteristics of the optical component. The controller is configured to deliver and/or receive signals to and/or from the optical component based on the digital representation of operating characteristics.
摘要翻译： 光学元件控制器。 控制器包括被配置为连接到控制器外部的光学部件的模拟接口。 模拟接口能够向和/或从光学部件传送和/或接收信号。 控制器包括能够连接到控制器外部的存储器的数字接口。 数字接口可以接收光学部件的操作特性的数字表示。 控制器被配置为基于操作特性的数字表示来向和/或从光学部件接收信号和/或从光学部件接收信号。
-
公开(公告)号：US08891970B2
公开(公告)日：2014-11-18
申请号：US11118589
申请日：2005-04-29
CPC分类号： H04B10/801
摘要： A controller for optical components. A controller includes mixed signal interface that is configured to connect to an optical component external to the controller. The mixed signal interface is able to deliver and/or receive signals to and/or from the optical component. The controller includes a digital interface that is able to connect to a memory external to the controller. The digital interface may receive a digital representation of operating characteristics of the optical component. The controller is configured to deliver and/or receive signals to and/or from the optical component based on the digital representation of operating characteristics.
摘要翻译： 光学元件控制器。 控制器包括被配置为连接到控制器外部的光学部件的混合信号接口。 混合信号接口能够向和/或从光学部件传送和/或接收信号。 控制器包括能够连接到控制器外部的存储器的数字接口。 数字接口可以接收光学部件的操作特性的数字表示。 控制器被配置为基于操作特性的数字表示来向和/或从光学部件接收信号和/或从光学部件接收信号。
-
公开(公告)号：US08068739B2
公开(公告)日：2011-11-29
申请号：US10866483
申请日：2004-06-11
申请人： Frank H. Levinson
发明人： Frank H. Levinson
IPC分类号： H04B10/00
CPC分类号： H04B10/801
摘要： Optical modules described herein include optical components such as lasers or photodiodes for communicating on fiber-optic networks. The lasers and photodiodes have analog interface such that the lasers and photodiodes can be controlled by a controller external to the optical modules. The optical modules also include memory modules. The memory modules store operating characteristics of the lasers and photodiodes. The operating characteristics can be read via digital interfaces that are connected to the memory modules. This allows the controller to appropriately adjust signals such that a randomly selected controller may be used with a randomly selected optical module.
摘要翻译： 本文描述的光学模块包括用于在光纤网络上通信的光学部件，例如激光器或光电二极管。 激光器和光电二极管具有模拟接口，使得激光器和光电二极管可以由光学模块外部的控制器控制。 光学模块还包括存储器模块。 存储器模块存储激光器和光电二极管的工作特性。 可以通过连接到存储器模块的数字接口读取操作特性。 这允许控制器适当地调整信号，使得随机选择的控制器可以与随机选择的光学模块一起使用。
-
-
-
-
-
-
-
-
-
搜索结果
49 条记录 (耗时 0.03 秒)