Apparatus and Method for Removing Unwanted Optical Radiation from an Optical Fiber

    公开(公告)号:US20100303104A1

    公开(公告)日:2010-12-02

    申请号:US12863099

    申请日:2009-01-19

    CPC classification number: G02B6/14 G02B6/4296 H01S3/06704 H01S3/06708

    Abstract: Apparatus comprising a source of optical radiation (15), an optical fibre (1), and an absorbing material (2), wherein; the optical fibre (1) comprises a core (37), at least one cladding (38), and an optical surface (3); the source of optical radiation (15) provides optical radiation (16) that propagates along the core (37) of the optical fibre (1), and unwanted optical radiation (14) that propagates along the cladding (38) that surrounds the core (37); and the absorbing material (2) is in contact with the optical surface (3) over a length (5) of the optical fibre (1). The apparatus is characterized in that: the absorbing material (2) has a refractive index (101) that is higher than a refractive index (100) of the optical surface (3) within a temperature range (102) thus enabling the unwanted optical radiation (14) to pass from the optical fibre (1) into the absorbing material (2) within said temperature range (102); the absorbing material (2) is such that it can absorb at least some of the unwanted optical radiation (14) that enters into it from the optical fibre (1); the absorbing material (2) is such that its temperature increases upon absorption of the unwanted optical radiation (14); and the absorbing material (2) is such that its said refractive index (101) reduces with increasing temperature. This has the effect of limiting the amount of the unwanted optical radiation (14) that can be removed per unit length of optical fibre (1) to a predetermined absorption per unit length (62). Thus the apparatus is such that it is able to remove the unwanted optical radiation (14) up to a power level (12) substantially equal to the product of the predetermined absorption per unit length (62) and the length (5) over which the absorbing material (2) is in contact with the optical surface (3).

    Network virtual memory for a cable television settop terminal
    4.
    发明授权
    Network virtual memory for a cable television settop terminal 失效
    用于有线电视机顶端的网络虚拟内存

    公开(公告)号:US5781226A

    公开(公告)日:1998-07-14

    申请号:US554990

    申请日:1995-11-13

    Inventor: Patrick Sheehan

    Abstract: The present invention comprises a memory management system employed in a settop terminal which utilizes memory available at the headend of a CATV system through a bidirectional CATV network to augment the memory resident within the settop terminal. The system includes a memory management unit that monitors the software application running on the settop terminal microprocessor, pre-fetches blocks of the program from the headend and stores these blocks in resident memory. The memory management unit manages the limited pool of settop terminal memory by dividing it into segments large enough to hold a single program block. Program blocks are fetched from the headend as needed by the microprocessor, and segments of memory containing program blocks not likely to be used are reused. The system provides sufficient read-ahead capability to ensure that the microprocessor has enough executable code to process at all times. The location of the memory is completely transparent to the microprocessor.

    Abstract translation: 本发明包括一种在机顶终端中采用的存储器管理系统,其利用通过双向CATV网络在CATV系统的前端可用的存储器来增加驻留在机顶终端内的存储器的存储器。 该系统包括一个内存管理单元,用于监视在机顶终端微处理器上运行的软件应用程序,从头端预取程序块,并将这些块存储在驻留存储器中。 存储器管理单元通过将其分成足够大以容纳单个程序块的段来管理机顶终端存储器的有限池。 由微处理器根据需要从头端取出程序块,并且重复使用不太可能使用的包含程序块的存储器段。 系统提供足够的预读功能,以确保微处理器始终具有足够的可执行代码来处理。 存储器的位置对于微处理器是完全透明的。

    Mobile separation unit
    5.
    发明授权
    Mobile separation unit 失效
    移动分离单元

    公开(公告)号:US5221302A

    公开(公告)日:1993-06-22

    申请号:US803527

    申请日:1991-12-09

    Inventor: Patrick Sheehan

    CPC classification number: B65G53/24

    Abstract: The mobile separation unit, for separating particulate solids from a transport gas, has a filtration housing for separating the solids from the transport gas connected to a vacuum pump or air compressor for inducing the flow of transport gas into the housing. The housing is mounted such that it is movable between a stowed position and operating position, the center of gravity of the housing in the stowed position being below its center of gravity in the operating position thereby improving the stability of the unit during transportation.

    Air filtration system and method
    7.
    发明申请
    Air filtration system and method 有权
    空气过滤系统及方法

    公开(公告)号:US20090139404A1

    公开(公告)日:2009-06-04

    申请号:US11987695

    申请日:2007-12-04

    Inventor: Patrick Sheehan

    CPC classification number: B01D46/02 B01D46/0001 B01D2265/02 B01D2273/30

    Abstract: An airnet constructed of a filtering fabric sewn in the shape of a windsock is connected to the discharge end of a fan. Actuation of the fan causes ambient air to flow through the fan and into the airnet. The air passes through the filtering fabric of the airnet and particulate matter in the ambient air is trapped and retained within the airnet. The airnet and fan combined form a portable air filtration system capable of filtering the ambient air in confined spaces, such as bathrooms being finished or remodeled, in a relatively quick and efficient manner.

    Abstract translation: 由风口形状的过滤织物构成的空气网被连接到风扇的排出端。 风扇的致动会使环境空气流过风扇进入空气网。 空气通过空气网的过滤织物,环境空气中的颗粒物质被捕获并保留在空气网内。 组合的空中网络和风扇形成便携式空气过滤系统,其能够以相对快速和有效的方式过滤密闭空间中的环境空气,例如正在完成或改造的浴室。

    TARGETING CONTENT BASED ON LOCATION
    8.
    发明申请
    TARGETING CONTENT BASED ON LOCATION 有权
    基于位置的目标内容

    公开(公告)号:US20090044246A1

    公开(公告)日:2009-02-12

    申请号:US12024696

    申请日:2008-02-01

    Abstract: Assets of broadcast network content are targeted to network users of interest based on location information regarding user equipment devices. Asset providers can specify location targeting criteria via a graphical user interface displaying mapping information. This location targeting criteria can then be compared to location information regarding user equipment devices so that assets are delivered to appropriate devices. The comparison of the location targeting criteria to the device location information can be performed at the user equipment devices or at another location. In the latter case the assets can be addressed to appropriate user equipment devices or appropriate user equipment devices can be directed to select the asset, which is broadcast via the network. In this manner, assets can be targeted to individual network users on a basis independent of network topology.

    Abstract translation: 基于关于用户设备设备的位置信息,广播网络内容的资源针对感兴趣的网络用户。 资产提供商可以通过显示映射信息的图形用户界面来指定位置定位标准。 然后可以将此位置定位条件与有关用户设备设备的位置信息进行比较,以便将资产传递到适当的设备。 位置定位标准与设备位置信息的比较可以在用户设备设备或其他位置进行。 在后一种情况下,资产可以被寻址到适当的用户设备设备,或者适当的用户设备设备可以被引导以选择通过网络广播的资产。 以这种方式,资产可以在独立于网络拓扑的基础上针对个别网络用户。

    Printer controlled default driver configuration
    9.
    发明申请
    Printer controlled default driver configuration 有权
    打印机控制的默认驱动程序配置

    公开(公告)号:US20060170943A1

    公开(公告)日:2006-08-03

    申请号:US11047834

    申请日:2005-01-31

    Abstract: Methods and systems for permitting a rendering device, such as a printer, to be automatically configured at the time of device driver installation, regardless of the means utilized to install the driver are disclosed. In general, a device driver (e.g., a printer driver) is associated with the rendering device. The device driver includes a driver default configuration. The driver default configuration can be initially set in the rendering device via an embedded network server (e.g., an embedded web server) in the rendering device. The driver installer can then query the driver default configuration as set on the rendering device. The driver can then be automatically adjusted prior to the installation of the driver, in response to querying the driver default configuration by the driver installer. The rendering device can be implemented as a printer, a scanner, a multi-function device, a photocopy machine, and the like.

    Abstract translation: 公开了用于允许诸如打印机之类的呈现设备在设备驱动程序安装时自动配置的方法和系统,而不管用于安装驱动程序的方式如何。 通常,设备驱动程序(例如,打印机驱动程序)与呈现设备相关联。 设备驱动程序包括驱动程序默认配置。 驱动程序默认配置可以在渲染设备中通过渲染设备中的嵌入式网络服务器(例如,嵌入式Web服务器)进行初始设置。 然后,驱动程序安装程序可以查看在渲染设备上设置的驱动程序默认配置。 然后可以在安装驱动程序之前自动调整驱动程序,以响应驱动程序安装程序查询驱动程序默认配置。 呈现装置可以被实现为打印机,扫描仪,多功能装置,复印机等。

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