专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2004112203A2 MODULAR OPTICAL DEVICE THAT INTERFACES WITH AN EXTERNAL CONTROLLER 审中-公开
标题翻译：与外部控制器接口的模块化光学设备
公开(公告)号：WO2004112203A2
公开(公告)日：2004-12-23
申请号：PCT/US2004/018844
申请日：2004-06-14
申请人： FINISAR CORPORATION
发明人： LEVINSON, Frank, H.
IPC分类号： H01S
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。

2. 发明申请

WO1992005608A1 SEMICONDUCTOR LASER DIODE CONTROLLER AND LASER DIODE BIASING CONTROL METHOD 审中-公开
标题翻译：半导体激光二极管控制器和激光二极管偏置控制方法
公开(公告)号：WO1992005608A1
公开(公告)日：1992-04-02
申请号：PCT/US1991005302
申请日：1991-07-31
申请人： FINISAR CORPORATION
发明人： FINISAR CORPORATION , LEVINSON, Frank, H.
IPC分类号： H01S03/10
CPC分类号： H05B33/0851 , H01S5/0014 , H01S5/0617 , H01S5/06209 , H01S5/06812 , H01S5/06825 , H01S5/0683 , H05B33/0854 , H05B37/03
摘要： A laser diode controller (102) uses a programmed microcontroller (162) to accurately control the process of turning on and selecting the operating point of the laser diode (100). The laser diode (100) has a front facet (110) for transmitting light, and a back facet (114) for monitoring the laser diode's optical output power. Once the back facet (114) of the laser diode (100) is calibrated, the controller can accurately monitor the laser diode's operating characteristics, and can select the best operating point current based on the current operating characteristics of the laser diode (100). During calibration of the laser diode (100), the controller (102) can check the linearity of the laser diode's optical output power as a function of drive current, and can thereby detect defects in the laser diode (100). In a full duplex optical link, the controller (102) of the present invention prevents the laser diodes from generating light at their full normal intensity until the integrity of the link has been established, thereby preventing light from the laser diode's from accidentally damaging user's eyes. Furthermore, the controller (102) can use the full duplex link to establish lower operating point drive currents that would otherwise be used, thereby significantly lengthening the lifetime of the laser diodes (100). A laser diode's operating characteristics change over time in such a way as to enable the controller (102) to predict when the laser will fail. The controller (102) records the operating characteristics of the laser diode (100) in a nonvolatile memory, analyzes changes in those characteristics, and generates a failure warning message when those changes match predefined failure prediction criteria.

3. 发明申请

WO1996028917A1 HIGH SPEED NETWORK SWITCH 审中-公开
标题翻译：高速网络开关
公开(公告)号：WO1996028917A1
公开(公告)日：1996-09-19
申请号：PCT/US1996003149
申请日：1996-03-06
申请人： FINISAR CORPORATION
发明人： FINISAR CORPORATION , LEVINSON, Frank, H. , FARLEY, Mark, J. , VU, Minh, Q. , LEUNG, Calvin, Poon-Kuen
IPC分类号： H04L12/56
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 (100) including a plurality of transceivers (104) for interfacing directly with a like plurality of nodes (102). Each of the transceivers (104) has a receive (112) and transmit (110) through port links for passing data to and from nodes. Transmitted data includes a connect/disconnect sequence, a first wait sequence, and user data. The switching apparatus (100) further includes circuitry for isolating each transceiver (104) so as to loop back data when not in use and a switching matrix (106) for directly connecting any pair of transceivers (104). Each of the transceivers (104) includes circuitry for detecting a connect and disconnect sequence and an interface for connection to a serial asynchronous receiver (T/R O) to derive node requests, routing data, priority and other information from the connect sequence detected at the transceiver (104). 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 (106). 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 (102) may set a priority for a connection request, queue a connection request or alternatively request data from the switch controller (114) 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多个节点（102）直接接口的多个收发器（104）的交换设备（100）。每个收发器（104）具有通过端口链路的接收（112）和发送（110），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（100）还包括用于隔离每个收发器（104）以便在不使用时环回数据的电路和用于直接连接任何一对收发器（104）的开关矩阵（106）。每个收发机（104）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（T / RO）的接口，以从所述接收序列中检测到的连接序列导出节点请求，路由数据，优先级和其他信息收发机（104）。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用于配置矩阵交换机（106）的总线架构中。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（102）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（114）微控制器核心请求数据。

4. 发明申请

WO1993009631A1 INFORMATION BROADCASTING SYSTEM AND METHOD 审中-公开
标题翻译：信息广播系统和方法
公开(公告)号：WO1993009631A1
公开(公告)日：1993-05-13
申请号：PCT/US1992009087
申请日：1992-10-27
申请人： FINISAR CORPORATION
发明人： FINISAR CORPORATION , LEVINSON, Frank, H.
IPC分类号： H04N01/00
CPC分类号： H04H40/90 , H04B7/18523 , H04H20/16 , H04H20/40 , H04H60/06 , H04H60/27 , H04H60/87 , H04N7/173 , H04N7/20
摘要： An information broadcasting system (100) provides a large number of subscribers access to a large amount of information using one or more satellite transmission channels. The system (100) can also use cable television transmission channels. A program supplier station (102) stores an information database (112) and tags all the information in the database with indices so as to form a single hierarchical structure which encompasses the entire information database (112). Portions of the information database (112) are transmitted often, at least once per day, in order to provide the basic subscriber with information need to access the remainder of the database (112). The information provided by the basic subscriber service, which will typically include at least 50 gigabytes of data, is available to all subscribers without requiring two way communications between the subscribers and the program supplier station. Using a tiered system for scheduling transmission of the 50 gigabytes or so of information included in the basic subscriber service, as well as an intelligent subscriber request anticipation scheme for retrieving information before the subscriber asks for it, the present invention provides subscribers with reasonably quick access to all the contents of the large database while using only a modest amount of bandwidth.
摘要翻译：信息广播系统（100）使用一个或多个卫星传输信道提供大量用户对大量信息的访问。系统（100）还可以使用有线电视传输通道。程序供应站（102）存储信息数据库（112），并且将数据库中的所有信息标记为索引，以形成包含整个信息数据库（112）的单个层次结构。通常每天至少发送一次信息数据库（112）的部分，以便为基本用户提供需要访问数据库的其余部分的信息（112）。基本用户服务提供的信息通常包括至少50GB的数据，对所有用户可用，而不需要用户和节目供应商站之间的双向通信。使用分层系统来调度包含在基本用户业务中的信息的50G字节的传输，以及用户在要求用户之前检索信息的智能用户请求预期方案，本发明为用户提供了相当快速的接入到大型数据库的所有内容，同时只使用适量的带宽。

5. 发明申请

WO2003061267A2 CABLE TELEVISION RETURN LINK SYSTEM WITH HIGH DATA-RATE SIDE-BAND COMMUNICATION CHANNELS 审中-公开
标题翻译：具有高数据速率边带通信信道的电缆电视返回链路系统
公开(公告)号：WO2003061267A2
公开(公告)日：2003-07-24
申请号：PCT/US2003/000812
申请日：2003-01-13
申请人： FINISAR CORPORATION
发明人： LEVINSON, Frank, H. , SAGE, Gerald, F. , LAWSON, Arthur, Michael , MOSTERT, Willem, A.
IPC分类号： H04N
CPC分类号： H04N21/2221 , H04J14/0227 , H04J14/0247 , H04J14/0252 , H04J14/0282 , H04J14/0283 , H04J14/0298 , H04L7/0029 , H04L7/005 , H04L12/2801 , H04N7/17309 , H04N7/22 , H04N21/2381 , H04N21/615 , H04N21/6168
摘要： A Cable Television (CATV) digital return link system that provides dedicated, high-speed, full-duplex and point-to-point connections between users and the head end system is disclosed. The CATV digital return link system includes return path transmitters, intermediate hubs and a head end hub coupled to each other via a network of fiber optics cables. The return path transmitters are each coupled to a relatively large number of users via a local CATV-subtree. Signals from cable modems are transmitted via the local CATV-subtree to the return path transmitters for transmission to the head end. A number of users are individually and directly connected to the return path transmitters. Data from these directly connected users is transmitted to the head end via the network of fiber optics cables in conjunction with the RF data from the subtree. Likewise, data from the head end to these directly connected users is transmitted in the forward path direction using the digital return link system.
摘要翻译：公开了一种在用户和头端系统之间提供专用，高速，全双工和点对点连接的有线电视CATV数字返回链路系统。 CATV数字返回链路系统包括返回路径发射机，中间集线器和通过光纤电缆网络彼此耦合的头端集线器。返回路径发射机各自经由本地CATV子树被耦合到相对大量的用户。来自电缆调制解调器的信号通过本地CATV子树传输到返回路径发射机，以传输到头端。多个用户单独并直接连接到返回路径发送器。来自这些直接连接的用户的数据通过光纤网络的网络结合来自子树的RF数据传输到头端。类似地，使用数字返回链路系统在前向路径方向上发送从头端到这些直接连接的用户的数据。

6. 发明申请

WO1993024978A1 METHOD AND APPARATUS FOR STIMULATING A LASER DIODE IN A FIBER OPTIC TRANSMITTER 审中-公开
标题翻译：用于在光纤传输器中激光激光二极管的方法和装置
公开(公告)号：WO1993024978A1
公开(公告)日：1993-12-09
申请号：PCT/US1993005215
申请日：1993-06-01
申请人： FINISAR CORPORATION
发明人： FINISAR CORPORATION , LEVINSON, Frank, H.
IPC分类号： H01S03/13
CPC分类号： H01S5/06213 , H01S5/0427 , H01S5/06832
摘要： A fiber optic transmitter circuit (10) includes a DC bias circuit (12) that produces a DC voltage, an amplifier circuit (U1) having data signal inputs and that produces a data signal and wherein the data signal and the DC voltage are supplied to a laser diode (U2) to stimulate the diode (U2) to produce light of a corresponding nature. The amplifier (U1) is selected so that the inherent noise level or noise figure characteristics of the amplifier are such as to provide stimulation of a single mode laser diode in the frequency band wherein the resonant frequency of the laser diode is typically found. The resulting impact of the noise on the laser diode is to transform the single mode laser diode into a multi-mode laser diode thereby reducing the impact of modal noise on the fiber optic data transmission system that incorporates the disclosed fiber optic transmitter device.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式