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1. 发明授权

US07599620B2 Communications network for a metropolitan area 失效
公开(公告)号：US07599620B2
公开(公告)日：2009-10-06
申请号：US09893493
申请日：2001-06-29
申请人： Alan F. Graves , Ian M. Cunningham , Ryan Stark , Kent E. Felske , Chris Hobbs , John H. Watkins
发明人： Alan F. Graves , Ian M. Cunningham , Ryan Stark , Kent E. Felske , Chris Hobbs , John H. Watkins
IPC分类号： H04B10/00
CPC分类号： H04Q11/0066 , H04Q2011/0075 , H04Q2011/0084
摘要： A communications network for a metropolitan area is disclosed. The network is comprised of three basic types of nodes: an access multiplexer, a photonic switch, and a core node. The access multiplexer provides multiplexing of data packets from end-users onto at least one sparse wavelength division multiplexed (SWDM) wavelength. The SWDM wavelengths are carried over fiber cable to the photonic switches, which consolidate these wavelengths into dense wavelength division multiplexed (DWDM) wavelengths for transmission to the core node. The core nodes include a photonic switch (PSX) and a service-aware terabit router core for routing packets within the metropolitan area via the network or out to a long haul network. The photonic switches and core nodes are capable of switching at the wavelength, group of wavelength, and fiber levels.

2. 发明授权

US07035541B2 Wavelength architecture and implementation for a photonically switched network 失效
标题翻译：光子交换网络的波长架构和实现
公开(公告)号：US07035541B2
公开(公告)日：2006-04-25
申请号：US09870665
申请日：2001-06-01
申请人： Alan F. Graves , John H. Watkins
发明人： Alan F. Graves , John H. Watkins
IPC分类号： H04J14/00
CPC分类号： H04J14/0227 , H04J14/0241 , H04J14/0284 , H04Q11/0005 , H04Q2011/0016 , H04Q2011/0024 , H04Q2011/0081 , H04Q2011/0083
摘要： The photonic network of the present invention uses a cost-effective DWDM optimized switch architecture allowing the introduction of DWDM into the metro network. In this invention the optical carriers are all generated in the photonic layer at the edge photonic switching node and are allocated out to the photonic access nodes or central core data switch for modulation. This has the advantage of providing the optical carriers to be modulated from a centralized highly stable and precise source, thereby meeting the requirements for DWDM carrier precision, whilst generating these carriers in relatively close proximity to the modulators. Sparse WDM components can be used in the access portion of the network without adversely affecting the ability of the signal to transit the DWDM portion of the core network, since the optical carrier frequency is fixed at the centralized source and is unaffected by these components.
摘要翻译：本发明的光子网络使用成本有效的DWDM优化的交换机架构，允许将DWDM引入城域网。在本发明中，光载波全部在边缘光子交换节点的光子层产生，并被分配给光子接入节点或中心核心数据交换机进行调制。这具有从集中的高度稳定和精确的源提供要调制的光载波的优点，从而满足DWDM载波精度的要求，同时在相对靠近调制器的同时产生这些载波。由于光载波频率固定在集中式源并且不受这些组件的影响，稀疏WDM组件可以用于网络的接入部分，而不会不利地影响信号传输核心网的DWDM部分的能力。

3. 发明授权

US07079772B2 Optical signal generator with stabilized carrier frequency output 失效
公开(公告)号：US07079772B2
公开(公告)日：2006-07-18
申请号：US09892492
申请日：2001-06-28
申请人： Alan F. Graves , Dominic J. Goodwill , John H. Watkins
发明人： Alan F. Graves , Dominic J. Goodwill , John H. Watkins
IPC分类号： H01S3/00 , H01S3/10 , H04B10/20 , H04J14/08
CPC分类号： H04B10/506 , H04B10/572 , H04J14/02 , H04Q2011/0009 , H04Q2011/0075
摘要： Method and apparatus for stabilizing an optical carrier frequency of a generated carrier signal with respect to a target carrier frequency. The apparatus includes a multi-channel optical filter for filtering the generated carrier signal, thereby to provide a first filtered optical signal and a second filtered optical signal, each filtered optical signal including the portion of the generated carrier signal contained in a pass band surrounding a respective channel center frequency. The apparatus also includes a detection unit for determining an indication of a characteristic of the target carrier frequency in the first and second filtered optical signals, as well as a control unit for adjusting the optical carrier frequency of the generated carrier signal as a function of the difference in the indication of the characteristic of the target carrier frequency in the first and second filtered optical signals.

4. 发明授权

US07050667B2 Metropolitan photonic switch 失效
公开(公告)号：US07050667B2
公开(公告)日：2006-05-23
申请号：US10768050
申请日：2004-02-02
申请人： Alan F. Graves , George S. Irwin , John H. Watkins
发明人： Alan F. Graves , George S. Irwin , John H. Watkins
IPC分类号： G02B6/26
CPC分类号： H04J14/0289 , H04J14/02 , H04J14/0208 , H04J14/0212 , H04J14/0213 , H04J14/022 , H04J14/0221 , H04J14/0284 , H04J14/0297 , H04Q11/0005 , H04Q11/0067 , H04Q2011/0016 , H04Q2011/0075
摘要： A photonic switch uses a cost-effective DWDM optimized switch architecture allowing the introduction of DWDM into the metro network. In order to implement this architecture cost-effective ways of implementing the optical carrier frequency/wavelength precision required for a Dense Wavelength Division Multiplexing 100 GHz or 50 GHz on-grid solutions are needed. The photonic switch acts as an intermediary between the WDM density of the access portion of the metropolitan photonic network and the DWDM density of the core photonic network. The metro photonic switch introduces optical carriers that are all generated in the photonic layer adjacent to it and allocates them out to the photonic access nodes for modulation. This has the advantage of providing the optical carriers to be modulated from a centralized highly stable and precise source, thereby meeting the requirements for DWDM carrier precision, whilst generating these carriers in relatively close proximity to the modulators. Coarse WDM components can be used in the access portion of the network without adversely affecting the ability of the signal to transit the DWDM portion of the core network, since the optical carrier frequency is fixed at the centralized source and is unaffected by these components.

5. 发明授权

US06690848B2 Metropolitan photonic switch 失效
标题翻译：大都市光子开关
公开(公告)号：US06690848B2
公开(公告)日：2004-02-10
申请号：US09893498
申请日：2001-06-29
申请人： Alan F. Graves , George G. Irwin , John H. Watkins
发明人： Alan F. Graves , George G. Irwin , John H. Watkins
IPC分类号： G02B626
CPC分类号： H04J14/0289 , H04J14/02 , H04J14/0208 , H04J14/0212 , H04J14/0213 , H04J14/022 , H04J14/0221 , H04J14/0284 , H04J14/0297 , H04Q11/0005 , H04Q11/0067 , H04Q2011/0016 , H04Q2011/0075
摘要： A photonic switch uses a cost-effective DWDM optimized switch architecture allowing the introduction of DWDM into the metro network. In order to implement this architecture cost-effective ways of implementing the optical carrier frequency/wavelength precision required for a Dense Wavelength Division Multiplexing 100 GHz or 50 GHz on-grid solutions are needed. The photonic switch acts as an intermediary between the WDM density of the access portion of the metropolitan photonic network and the DWDM density of the core photonic network. The metro photonic switch introduces optical carriers that are all generated in the photonic layer adjacent to it and allocates them out to the photonic access nodes for modulation. This has the advantage of providing the optical carriers to be modulated from a centralized highly stable and precise source, thereby meeting the requirements for DWDM carrier precision, whilst generating these carriers in relatively close proximity to the modulators. Coarse WDM components can be used in the access portion of the network without adversely affecting the ability of the signal to transit the DWDM portion of the core network, since the optical carrier frequency is fixed at the centralized source and is unaffected by these components.
摘要翻译：光子交换机采用成本效益好的DWDM优化交换机架构，可将DWDM引入城域网。为了实现这种架构，需要实现高密度波分复用100 GHz或50 GHz并网解决方案所需的光载波频率/波长精度的经济有效的方法。光子开关充当城市光网络的接入部分的WDM密度与核心光子网络的DWDM密度之间的中介。城市光电开关引入光子载体，其全部在与其相邻的光子层中产生，并将其分配给光子接入节点进行调制。这具有从集中的高度稳定和精确的源提供要调制的光载波的优点，从而满足对DWDM载波精度的要求，同时在相对靠近调制器的同时产生这些载波。由于光载波频率固定在集中式源并且不受这些组件的影响，所以可以在网络的接入部分中使用粗WDM组件，而不会不利地影响信号传输核心网的DWDM部分的能力。

6. 发明授权

US06999677B2 Protection switching arrangement for an optical switching system 有权
公开(公告)号：US06999677B2
公开(公告)日：2006-02-14
申请号：US09726027
申请日：2000-11-30
申请人： Alan F. Graves , Dallas F. Smith
发明人： Alan F. Graves , Dallas F. Smith
IPC分类号： H04B10/00
CPC分类号： G02B6/359 , G02B6/3512 , G02B6/3546 , G02B6/356 , H04J14/0227 , H04J14/0241 , H04J14/0283 , H04J14/0289 , H04J14/0291 , H04J14/0293 , H04J14/0295 , H04J14/0297 , H04Q11/0005 , H04Q2011/0011 , H04Q2011/0016 , H04Q2011/003 , H04Q2011/0039 , H04Q2011/0043 , H04Q2011/0075 , H04Q2011/0083
摘要： A protection arrangement for an optical switching system includes protection switching for switch planes in the optical core and for ports in the tributary cards. For a multiple layer switch core protection is also provided between layers. A first layer is for switching optical channels. The protection switches used may be 1×N, 2×N or 3×N MEMS optical switches. The 1×N MEMS provides for protection switching. The 2×N MEMS provides protection switching and testing capability. The 3×N MEMS provides for protection switching, testing and backup of the protection switching. Application of these protection switches is shown in lambda plane switch cores, multiple layer switch cores and combined switch cores.

7. 发明授权

US06871021B2 Optical switch with connection verification 失效
标题翻译：具有连接验证的光开关
公开(公告)号：US06871021B2
公开(公告)日：2005-03-22
申请号：US09859544
申请日：2001-05-18
申请人： Alan F. Graves , John G. Gruber , Andrew J. Bryant
发明人： Alan F. Graves , John G. Gruber , Andrew J. Bryant
IPC分类号： H04Q11/00 , H04B10/08 , H04J14/00
CPC分类号： H04Q11/0005 , H04Q2011/0015 , H04Q2011/0043 , H04Q2011/0083 , H04Q2011/0084
摘要： An optical switch is equipped with a set of optical intensity controllers at its input, each intensity controller being driven to vary a corresponding WDM input traffic signal with a low power test signal. The switch is also equipped with optical splitters at its output and a path integrity analyzer connected to the splitters and to the intensity controllers. The path integrity analyzer generates or controls generation of the test signals applied by the intensity controllers. The path integrity analyzer also receives the tapped portions of the WDM output signals and separates them into their single-carrier components in order to recover a set of switched single-carrier optical signals. The path integrity analyzer is further provided with test signal detectors used to detect the presence of a test signal in each recovered switched single-carrier optical signal. The path integrity analyzer thus ascertains the integrity of the connection involving each switched single-carrier optical signal by comparing detected test signals to expected test signals that are derived from a connection map.
摘要翻译：光开关在其输入处配备有一组光强度控制器，每个强度控制器被驱动以用低功率测试信号来改变对应的WDM输入话务信号。该开关还在其输出端配有光分路器，并连接到分路器和强度控制器的路径完整性分析器。路径完整性分析器生成或控制由强度控制器施加的测试信号的产生。路径完整性分析器还接收WDM输出信号的抽头部分并将它们分离成它们的单载波分量，以便恢复一组开关单载波光信号。路径完整性分析器还提供有用于检测每个恢复的开关单载波光信号中的测试信号的存在的测试信号检测器。路径完整性分析器因此通过将检测到的测试信号与从连接图导出的预期测试信号进行比较来确定涉及每个开关单载波光信号的连接的完整性。

8. 发明授权

US07801743B2 Use of location awareness of establish communications with a target clinician in a healthcare environment 有权
标题翻译：使用位置感知来建立与医疗保健环境中的目标临床医生的沟通
公开(公告)号：US07801743B2
公开(公告)日：2010-09-21
申请号：US11064930
申请日：2005-02-25
申请人： Alan F. Graves , Jeff Fitchett
发明人： Alan F. Graves , Jeff Fitchett
IPC分类号： G06Q10/00 , G06Q50/00
CPC分类号： H04W64/00 , G06F19/00 , G06Q50/22
摘要： A method of communicating in a healthcare establishment. The method comprises receiving data indicative of a desire to communicate with a target clinician; receiving data regarding a wirelessly detectable tag associated with the target clinician; determining a location of the target clinician within the healthcare establishment based at least in part on the data regarding the wirelessly detectable tag; applying an unavailability policy to obtain an outcome indicating whether the target clinician is available for communication, the unavailability policy being a function of the location of the target clinician; and responsive to the outcome indicating that the target clinician is available for communication, performing an action to cause communication with the target clinician. In this way, time and effort will not be spent attempting to communicate with clinicians that are not considered to be available, even though they may be registered for duty.
摘要翻译：在医疗保健机构中进行沟通的方法。该方法包括接收指示与目标临床医生通信的愿望的数据; 接收关于与目标临床医生相关联的无线可检测标签的数据; 至少部分地基于关于无线可检测标签的数据来确定医疗保健机构内的目标临床医生的位置; 应用不可用性策略以获得指示目标临床医生是否可用于通信的结果，不可用性策略是目标临床医生的位置的函数; 并且响应于指示目标临床医生可用于通信的结果，执行与目标临床医生进行通信的动作。通过这种方式，即使可能注册了职务，也不会花费时间和精力与尝试与临床医生进行沟通，这些医师不被认为是可用的。

9. 发明授权

US06586724B2 Chromatic dispersion discriminator 有权
公开(公告)号：US06586724B2
公开(公告)日：2003-07-01
申请号：US09842236
申请日：2001-04-26
申请人： Alan F. Graves
发明人： Alan F. Graves
IPC分类号： G01N2125
CPC分类号： H04B10/25133
摘要： A chromatic dispersion discriminator for determining the amount of chromatic dispersion in optical signals used by optical transmission systems is described. The discriminator provides a means of detecting the polarity and magnitude of dispersion in optical signals received over a dispersive optical link, thereby allowing the correct amount of dispersion compensation to be applied to each optical signal. The dispersion discriminator includes: a splitter for dividing the optical signal into at least first and second portions; a first dispersion leg for causing a first additional amount of dispersion in the first portion; a second dispersion leg for causing a second additional amount of dispersion in the second portion that is opposite in polarity and substantially equal in magnitude to the first additional amount such that the amount of dispersion in the second portion is detectably different from the amount of dispersion in the first portion; and a dispersion detector for receiving the first and second portions from the respective dispersion legs, determining the amount of dispersion in the optical signal by detecting a difference between the amount of dispersion in the first and second portions, and providing an indication of said amount of dispersion in the optical signal.

10. 发明授权

US5029333A Communications system 失效
标题翻译：通讯系统
公开(公告)号：US5029333A
公开(公告)日：1991-07-02
申请号：US447316
申请日：1989-12-07
申请人： Alan F. Graves , Valerie A. Van Alstine , Barry B. Hagglund
发明人： Alan F. Graves , Valerie A. Van Alstine , Barry B. Hagglund
IPC分类号： H04H20/42 , H04H20/69 , H04H20/81 , H04J3/16 , H04L12/56 , H04M11/00 , H04M11/06 , H04Q11/00
CPC分类号： H04Q11/0001 , H04J3/1611 , H04Q2011/0081
摘要： A double-star communications system comprises a digital terminal, active pedestals coupled to the digital terminal via optical fibers, and subscribers' premises coupled to each active pedestal via existing telephone lines and via additional communications paths, which may comprise optical fibers or coaxial calbes. The digital terminal multiplexes broadband signal components, such as video channels, selected in response to subscriber control signals, with a multiplexed telephony signal and transmits these optically to an active pedestal, and receives the control signals, a multiplexed telephony signal, and optional upstream broadband signal components from the active pedestal. The active pedestal transmits and receives the signals on the first communications path, and demultiplexes the received multiplexed telephony signal and the broadband signal components. The received and tranmitted telephony signals are coupled to and from the telephone lines for providing telephone communications, and the selected broadband signal components are coupled to the additional communications paths. The active pedestal forwards to the digital terminal the control signals received from the subscriber via the additional communications paths, optionally multiplexed with an upstream broadband signal component.
摘要翻译：双星通信系统包括数字终端，经由光纤耦合到数字终端的有源基座，以及经由现有电话线和经由可包括光纤或同轴电缆的附加通信路径耦合到每个有源基座的用户的房屋。数字终端将具有多路电话信号的响应于用户控制信号选择的诸如视频信道的宽带信号分量复用到有源基座上，并将其发送到有源基座，并接收控制信号，复用电话信号和可选的上行宽带来自有源基座的信号分量。有源基座在第一通信路径上发送和接收信号，并且解复用接收的复用电话信号和宽带信号分量。接收和传输的电话信号耦合到电话线路和从电话线路耦合以用于提供电话通信，并且所选择的宽带信号分量耦合到附加通信路径。有源基座经由附加通信路径向数字终端转发从订户接收的控制信号，可选地与上行宽带信号分量复用。

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