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1. 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。

2. 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.

3. 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。

4. 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.

5. 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.

6. 发明授权

US4135385A Method of determining the location of underwater pipeline leaks 失效
标题翻译：确定水下管道泄漏位置的方法
公开(公告)号：US4135385A
公开(公告)日：1979-01-23
申请号：US717570
申请日：1976-08-26
申请人： John H. Watkins
发明人： John H. Watkins
IPC分类号： G01M3/28
CPC分类号： G01M3/2815
摘要： A method for determining the location of underwater pipeline leaks comprising first measuring the resulting pressure within the pipeline, calculating depth of pipeline at the site of the leak and then determining the location of the leak by reference to a graph of the profile of the pipeline which plots the depth of the pipeline against the distance of the pipeline from shore.
摘要翻译：一种用于确定水下管道泄漏的位置的方法，包括首先测量管道内产生的压力，计算泄漏现场处的管道深度，然后通过参考管道轮廓的曲线确定泄漏位置根据管道距离岸线的距离绘制管道的深度。

7. 发明授权

US6008987A Electronic circuitry 失效
标题翻译：电子电路
公开(公告)号：US6008987A
公开(公告)日：1999-12-28
申请号：US62773
申请日：1998-04-21
申请人： Geoffrey N. Gale , John H. Watkins
发明人： Geoffrey N. Gale , John H. Watkins
IPC分类号： H05K1/02 , H05K7/20
CPC分类号： H05K7/20336 , H05K1/0207 , H05K1/0272 , H05K1/0206 , H05K2201/064 , H05K2201/066
摘要： An electronic circuit in which a heat pipe is mounted on a substrate for transporting heat from one region to another, the heat pipe also being secured to the substrate at a plurality of positions along the heat pipe for the purpose of increasing the stiffness of the substrate. The heat pipe may extend across a surface of the substrate or around an edge of the substrate. Heat conductive paths from the heat source may be provided by a ground plane within the substrate or a heat conductor may extend from the heat source to the heat pipe at a position spaced from the substrate.
摘要翻译：一种电子电路，其中热管安装在用于将热量从一个区域传送到另一个区域的基板上，该热管还沿着热管在多个位置处固定到基板，以增加基板的刚度。热管可以延伸穿过衬底的表面或围绕衬底的边缘。来自热源的导热路径可以由衬底内的接地平面提供，或者热导体可以在与衬底间隔开的位置处从热源延伸到热管。

8. 发明授权

US06591399B1 Technique for facilitating circuitry design 有权
标题翻译：促进电路设计的技术
公开(公告)号：US06591399B1
公开(公告)日：2003-07-08
申请号：US09749406
申请日：2000-12-28
申请人： Aneta O. Wyrzykowska , Amanda L. Ellis , John H. Watkins
发明人： Aneta O. Wyrzykowska , Amanda L. Ellis , John H. Watkins
IPC分类号： G06F1750
CPC分类号： G06F17/5036 , G06F17/5022 , G06F17/5045 , G06F17/5068 , G06F2217/78
摘要： A technique for facilitating circuitry design by providing minimum technology to minimize power consumption is disclosed. In one embodiment, the technique is realized by providing a system comprising estimation tools including power/density estimation tools, subsystem performance estimation tools, and performance analysis tools. Based on components and goals input by the user the system provides comparisons to facilitate minimum power consumption, maximum density, and maximum throughput. The user proceeds from a component level to a system level to arrive at an optimal system design.
摘要翻译：公开了一种通过提供最小技术来最小化功耗来促进电路设计的技术。在一个实施例中，该技术通过提供包括估计工具的系统来实现，包括功率/密度估计工具，子系统性能估计工具和性能分析工具。基于用户输入的组件和目标，系统提供比较，以促进最小功耗，最大密度和最大吞吐量。用户从组件级别进入系统级别，以获得最佳的系统设计。

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