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1. 发明授权

US07778554B2 System and method for transmitting data on return path of a cable television system 有权
标题翻译：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
申请人： Frank H. Levinson , Gerald F. Sage , Arthur Michael Lawson , Willem A. Mostert
发明人： Frank H. Levinson , Gerald F. Sage , Arthur Michael Lawson , Willem A. Mostert
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。

2. 发明授权

US07257328B2 System and method for transmitting data on return path of a cable television system 有权
标题翻译：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：US07257328B2
公开(公告)日：2007-08-14
申请号：US09735710
申请日：2000-12-12
申请人： Frank H. Levinson , Gerald F. Sage , Arthur Michael Lawson , Willem A. Mostert
发明人： Frank H. Levinson , Gerald F. Sage , Arthur Michael Lawson , Willem A. Mostert
IPC分类号： H04B10/04
CPC分类号： H04N21/615 , H04N7/17309 , H04N7/22 , H04N21/6168
摘要： An optical signal return path system includes a transmitter having a sample clock generator for generating a sample clock and an RF signal receiver for receiving and converting an analog RF data signal into a first data stream of digitized RF data samples at a rate determined by the sample clock. Supplemental channel circuitry provides a second data stream. A multiplexor receives and combines the first data stream and second data stream, and an optical transmitter converting the combined data stream into a serialized optical data signal for transmission over an optical fiber. The second data stream may contain maintenance data reflecting an operational state of the transmitter. A receiver receives the optical data signal 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 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具有用于产生采样时钟的采样时钟发生器和RF信号接收器的发射器，RF信号接收器以模拟RF数据信号的速率接收数字化RF数据样本的第一数据流，时钟。补充信道电路提供第二数据流。多路复用器接收并组合第一数据流和第二数据流，以及光发送器，将组合的数据流转换成串行化的光数据信号，以在光纤上传输。第二数据流可以包含反映发射机的操作状态的维护数据。接收器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。

3. 发明授权

US07222358B2 Cable television return link system with high data-rate side-band communication channels 有权
标题翻译：具有高数据速率边带通信信道的有线电视返回链路系统
公开(公告)号：US07222358B2
公开(公告)日：2007-05-22
申请号：US10285205
申请日：2002-10-30
申请人： Frank H. Levinson , Gerald F. Sage , Arthur Michael Lawson , Willem A. Mostert
发明人： Frank H. Levinson , Gerald F. Sage , Arthur Michael Lawson , Willem A. Mostert
IPC分类号： H04N7/173
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。

4. 发明授权

US07529487B2 System and method for transmitting data on return path of a cable television system 有权
标题翻译：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：US07529487B2
公开(公告)日：2009-05-05
申请号：US11838167
申请日：2007-08-13
申请人： Frank H. Levinson , Gerald F. Sage , Arthur Michael Lawson , Willem A. Mostert
发明人： Frank H. Levinson , Gerald F. Sage , Arthur Michael Lawson , Willem A. Mostert
IPC分类号： H04B10/00
CPC分类号： H04N21/615 , H04N7/17309 , H04N7/22 , H04N21/6168
摘要： A return path transmitter includes an optical signal receiver configured to receive a digital optical signal and generate therefrom a first digitized RF data stream and a sample clock. The return path transmitter further includes an RF signal receiver, coupled to the optical signal receiver, configured to receive and convert the analog RF data signal into a second digitized RF data stream of digitized RF data samples at a rate determined by the sample clock. The return path transmitter further includes a summing circuit configured to mathematically sum the first and second digitized RF data streams so as to generate a third digitized RF data stream. The return path transmitter further includes an optical transmitter configured to convert an output data stream into a serialized optical data signal for transmission over an optical fiber, the output data stream including the third digitized RF data stream.
摘要翻译：返回路径发射器包括光信号接收器，其被配置为接收数字光信号并由其产生第一数字化RF数据流和采样时钟。返回路径发射机还包括耦合到光信号接收器的RF信号接收器，其被配置为以由采样时钟确定的速率接收并将模拟RF数据信号转换成数字化RF数据样本的第二数字化RF数据流。返回路径发射机还包括一个求和电路，其被配置为对第一和第二数字化的RF数据流进行数学求和，以产生第三数字化的RF数据流。返回路径发射机还包括配置成将输出数据流转换成串行化的光数据信号以便通过光纤传输的光发射机，该输出数据流包括第三数字化的RF数据流。

5. 发明授权

US5566171A Multi-mode high speed network switch for node-to-node communication 失效
标题翻译：用于节点到节点通信的多模高速网络交换机
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
IPC分类号： H04L12/52 , H04L12/56
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。

6. 发明授权

US5008877A Optical signal recovery for distribution communication system 失效
标题翻译：配电通信系统的光信号恢复
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
IPC分类号： H04L7/00 , H04L12/28
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。

7. 发明授权

US4770529A Alignment of optical waveguides 失效
标题翻译：光波导对准
公开(公告)号：US4770529A
公开(公告)日：1988-09-13
申请号：US904750
申请日：1986-09-08
申请人： Frank H. Levinson , Joseph Zucker , Nelson M. Shen , Robert Schlingensiepen
发明人： Frank H. Levinson , Joseph Zucker , Nelson M. Shen , Robert Schlingensiepen
IPC分类号： G01B11/27 , G02B6/38 , G01B11/26
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。

8. 发明授权

US4542502A Reconfigurable collision avoiding system, station and protocol for a two path multiple access digital communications system 失效
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.

9. 发明授权

US09065571B2 Modular controller that interfaces with modular optical device 有权
标题翻译：与模块化光学设备连接的模块化控制器
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
IPC分类号： H04B10/50 , H04B10/40
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。

10. 发明授权

US08891970B2 Modular optical device with mixed signal interface 有权
标题翻译：具有混合信号接口的模块化光学器件
公开(公告)号：US08891970B2
公开(公告)日：2014-11-18
申请号：US11118589
申请日：2005-04-29
申请人： Frank H. Levinson , James K. Guenter , Jimmy A. Tatum
发明人： Frank H. Levinson , James K. Guenter , Jimmy A. Tatum
IPC分类号： H04B10/40 , H04B10/80
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。

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