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1. 发明申请

US20060083520A1 Communication by radio waves and optical waveguides 审中-公开
标题翻译：通过无线电波和光波导进行通信
公开(公告)号：US20060083520A1
公开(公告)日：2006-04-20
申请号：US10966509
申请日：2004-10-15
申请人： Peter Healey , Paul Townsend , Colin Ford
发明人： Peter Healey , Paul Townsend , Colin Ford
IPC分类号： H04B10/12
CPC分类号： H04B10/25759
摘要： The invention relates to improvements to full-duplex bi-directional opto-electrical transducers, primarily for use in radio-over-fiber installations, such as remote-antenna installations for cellular radio apparatus. The transducer is of the kind based on an electroabsorption modulator, and the first improvement consists in biasing it by means of a constant-current source rather than conventionally by directly setting a bias voltage. With appropriate selection of the EAM, a preset constant current source is considered adequate, but its setting may be adjusted to operating conditions by a control algorithm if found desirable. A second improvement consists in increasing the effective load impedance of the EAM by using an inductive load that forms a tuned circuit with the internal capacitance of the EAM, resonant at a frequency in the operating range..
摘要翻译：本发明涉及全双工双向光电换能器的改进，主要用于无线电光纤安装，例如蜂窝无线电设备的远程天线安装。传感器是基于电吸收调制器的类型，并且第一改进在于通过恒流源而不是常规地通过直接设置偏置电压来偏置传感器。通过对EAM的适当选择，预设的恒流源被认为是足够的，但如果需要，其设置可以通过控制算法调整到工作条件。第二个改进在于通过使用形成具有EAM的内部电容的调谐电路的感性负载来增加EAM的有效负载阻抗，在工作范围内以频率谐振。

2. 发明申请

US20080101798A1 Communication by radio waves and optical waveguides 审中-公开
标题翻译：通过无线电波和光波导进行通信
公开(公告)号：US20080101798A1
公开(公告)日：2008-05-01
申请号：US11985488
申请日：2007-11-15
申请人： Peter Healey , Paul Townsend , Colin Ford
发明人： Peter Healey , Paul Townsend , Colin Ford
IPC分类号： H04B10/00
CPC分类号： H04B10/25759
摘要： The invention relates to improvements to full-duplex bi-directional opto-electrical transducers, primarily for use in radio-over-fiber installations, such as remote-antenna installations for cellular radio apparatus. The transducer is of the kind based on an electroabsorption modulator, and the first improvement consists in biasing it by means of a constant-current source rather than conventionally by directly setting a bias voltage. With appropriate selection of the EAM, a preset constant current source is considered adequate, but its setting may be adjusted to operating conditions by a control algorithm if found desirable. A second improvement consists in increasing the effective load impedance of the EAM by using an inductive load that forms a tuned circuit with the internal capacitance of the EAM, resonant at a frequency in the operating range.
摘要翻译：本发明涉及全双工双向光电换能器的改进，主要用于无线电光纤安装，例如蜂窝无线电设备的远程天线安装。传感器是基于电吸收调制器的类型，并且第一改进在于通过恒流源而不是常规地通过直接设置偏置电压来偏置传感器。通过对EAM的适当选择，预设的恒流源被认为是足够的，但如果需要，其设置可以通过控制算法调整到工作条件。第二个改进在于通过使用形成具有EAM的内部电容的调谐电路的感性负载来增加EAM的有效负载阻抗，在工作范围内以频率谐振。

3. 发明授权

US08483391B2 Optical communication system and method for secure data communication using quantum key distribution 有权
标题翻译：光通信系统和使用量子密钥分发的安全数据通信方法
公开(公告)号：US08483391B2
公开(公告)日：2013-07-09
申请号：US12922196
申请日：2009-03-13
申请人： Paul Townsend
发明人： Paul Townsend
IPC分类号： H04L29/06 , H04L9/12
CPC分类号： H04L9/0852
摘要： The invention provides time-synchronised transmission of data on the (polarisation or phase-modulated) QKD channel and the (on-off modulated) conventional channel such that a QKD bit is only transmitted when a zero, or sequence of zeros, is transmitted on the conventional channel. Also, there is co-directional propagation of the QKD and conventional channel. Further, there is dispersion management through wavelength selection or control of fibre properties or other means such that the “walk-off in time of the QKD pulses and the Raman pulses generated by the ones on the conventional channel is less than or of the order of one bit period. The latter can be achieved, for example, by placing the conventional and QKD channel wavelengths close to the point where the group velocity-induced time delay for optical pulses propagating in the fibre reaches a minimum. This dispersion minimum occurs at a wavelength of 1.3 microns in standard fibre. The invention discloses a receiver embodiment to implement the invention.
摘要翻译：本发明提供对（偏振或相位调制）QKD信道和（开关调制的）常规信道上的数据的时间同步传输，使得仅当零或零序列被发送时才发送QKD比特传统渠道。此外，还存在QKD和常规信道的共向传播。此外，通过波长选择或光纤特性控制或其他方式进行色散管理，使得“QKD脉冲在时间上的移动和由常规信道上的信号产生的拉曼脉冲”小于或等于后一种可以通过例如将常规和QKD信道波长放置在接近于在光纤中传播的光脉冲的组速度引起的时间延迟达到最小的点来实现，该色散最小值出现在标准光纤中的波长为1.3微米，本发明公开了一种实现本发明的接收机实施例。

4. 发明授权

US08376201B2 Shoulder strap 有权
标题翻译：肩带
公开(公告)号：US08376201B2
公开(公告)日：2013-02-19
申请号：US12774067
申请日：2010-05-05
申请人： Gordon Wrigley , Paul Townsend
发明人： Gordon Wrigley , Paul Townsend
IPC分类号： A45F3/04
CPC分类号： A62B25/00 , A45F3/14 , A45F2003/146
摘要： A shoulder strap for a harness for breathing apparatus includes a first elongate strap portion generally extending along a first longitudinal axis; a second elongate strap portion attached to the first strap portion and generally extending along a second longitudinal axis that is oblique to the first axis; and a first attachment portion for attaching a first end of the shoulder strap to the harness in use and a second attachment portion for attaching a second end of the shoulder strap to the harness in use.
摘要翻译：用于呼吸器具的线束的肩带包括通常沿着第一纵向轴线延伸的第一细长带部分; 第二细长带部分附接到第一条带部分并且大致沿着与第一轴线倾斜的第二纵向轴线延伸; 以及用于将肩带的第一端附接到使用中的线束的第一附接部分和用于在使用中将肩带的第二端附接到线束的第二附接部分。

5. 外观设计

USD653324S1 Structural support member for a harness for a breathing apparatus 有权
标题翻译：用于呼吸器的线束的结构支撑构件
公开(公告)号：USD653324S1
公开(公告)日：2012-01-31
申请号：US29360213
申请日：2010-04-22
申请人： Paul Townsend , Gordon Wrigley
设计人： Paul Townsend , Gordon Wrigley

6. 发明申请

US20050014855A1 Composition containing a cross-linkable matrix precursor and a poragen, and a porous matrix prepared therefrom 有权
标题翻译：含有可交联基质前体和孔的组合物和由其制备的多孔基质
公开(公告)号：US20050014855A1
公开(公告)日：2005-01-20
申请号：US10893640
申请日：2004-07-16
申请人： Kenneth Bruza , James Godschalx , Edward Shaffer , Dennis Smith , Paul Townsend , Kevin Bouck , Qing Shan Niu
发明人： Kenneth Bruza , James Godschalx , Edward Shaffer , Dennis Smith , Paul Townsend , Kevin Bouck , Qing Shan Niu
IPC分类号： G02F1/1333 , C08F32/04 , C08F36/22 , C08F38/00 , C08J9/26 , C08L25/06 , C08L65/00 , H01L21/312 , C08J9/00
CPC分类号： H01L21/02126 , C08J9/26 , C08J2365/00 , C08L25/06 , C08L65/00 , H01L21/02118 , H01L21/02203 , H01L21/02282 , H01L21/312 , C08L2666/04 , C08L25/00 , C08L2666/06
摘要： A suitable cross-linkable matrix precursor and a poragen can be treated to form a porous cross-linked matrix having a Tg of greater than 300° C. The porous matrix material has a lower dielectric constant than the corresponding non-porous matrix material, making the porous matrix material particularly attractive for a variety of electronic applications including integrated circuits, multichip modules, and flat panel display devices.
摘要翻译：可以处理合适的可交联基质前体和孔，以形成Tg大于300℃的多孔交联基质。多孔基体材料具有比相应的无孔基体材料低的介电常数，使得多孔基质材料对于包括集成电路，多芯片模块和平板显示装置的各种电子应用特别有吸引力。

7. 发明授权

US08474457B2 Harnesses 有权
标题翻译：线束
公开(公告)号：US08474457B2
公开(公告)日：2013-07-02
申请号：US12761244
申请日：2010-04-15
申请人： Aaron Chapman , David Graham Storey , Paul Townsend
发明人： Aaron Chapman , David Graham Storey , Paul Townsend
IPC分类号： A62B7/00 , A62B9/00
CPC分类号： A45F3/14 , A45F2003/008 , A45F2003/025 , A45F2003/045 , A45F2003/146 , A45F2005/026 , A62B9/04 , A62B25/00
摘要： A harness for use with breathing apparatus has: a flexible hip plate 12 and a flexible bandolier-style shoulder panel 14, linked together by a strap 15, and a waist belt 16 fastenable by a sprung fastener. In use, the flexible hip plate 12 rests against the hip of a user (the left hip in this example), the waist belt is fitted around the waist of the user, and the shoulder panel 14 rests against the shoulder opposite to the hip against which the flexible plate is resting (the right shoulder in this example). At least the bandolier-style panel 14, and optionally also the hip plate 12 of the harness 10, are made of a resilient material which, though flexible, allows the harness substantially to retain its operational configuration even when not being worn.
摘要翻译：用于呼吸器的线束具有：柔性髋板12和通过带15连接在一起的柔性带状挡板14，以及可由弹簧紧固件固定的腰带16。在使用中，柔性髋板12靠在使用者的臀部（在本示例中为左臀部），腰带围绕使用者的腰围安装，并且肩胛板14抵靠与臀部相对的肩部抵靠柔性板静止（在本例中为右肩）。至少带式面板14以及可选地还可以是线束10的髋板12由弹性材料制成，弹性材料尽管是柔性的，但即使在不被磨损的情况下也允许线束基本上保持其操作构型。

8. 发明申请

US20130121707A1 LINEAR BURST MODE RECEIVER 有权
标题翻译：线性模式接收器
公开(公告)号：US20130121707A1
公开(公告)日：2013-05-16
申请号：US13699855
申请日：2011-05-24
申请人： Peter Ossieur , Paul Townsend
发明人： Peter Ossieur , Paul Townsend
IPC分类号： H04B10/06
CPC分类号： H04B10/6931 , H03G3/3073 , H03G3/3084 , H04B10/672
摘要： The invention provides a linear burst mode receiver comprising a first amplifier connected to a photodiode adapted to detect an optical input burst signal, a second amplifier connected to said photodiode; and means for deriving the peak input current of the detected burst signal using said second amplifier. The invention further provides means for using the derived peak input current to adjust the gain of the first amplifier during the preamble of each burst, such that the output voltage swing of the first amplifier equals a given reference, independent of the strength of the optical input burst signal. The usage of the fast feed-forward automatic gain control mechanism solves the problems with gain switching and non-linearity prevalent in today's burst-mode receivers.
摘要翻译：本发明提供一种线性突发模式接收机，包括连接到光电二极管的第一放大器，适用于检测光输入脉冲串信号，连接到所述光电二极管的第二放大器; 以及用于使用所述第二放大器导出检测到的突发信号的峰值输入电流的装置。本发明还提供了用于在每个脉冲串的前导码期间使用导出的峰值输入电流来调整第一放大器的增益的装置，使得第一放大器的输出电压摆幅等于给定的参考值，而与光输入的强度无关突发信号。快速前馈自动增益控制机制的使用解决了今天突发模式接收机中普遍存在的增益切换和非线性问题。

9. 发明授权

US08215303B2 Breathing apparatus 有权
标题翻译：呼吸设备
公开(公告)号：US08215303B2
公开(公告)日：2012-07-10
申请号：US12482105
申请日：2009-06-10
申请人： Paul Townsend , David Hodson
发明人： Paul Townsend , David Hodson
IPC分类号： A61M16/00 , A62B7/00
CPC分类号： A62B18/10
摘要： A face mask (10) mechanically coupled to a lung demand valve (LDV) (12). The face mask (10) comprises a main mask and an inner mask (15) which fits over the wearer's mouth and nose. The interior of the inner mask (15) is in fluidic communication with the interior of the main mask (10) by means of non-return valves (16). The interior of the main mask is in fluidic communication with an inlet port (18) which is mechanically and fluidically coupled to a supply port (20) of an LDV. The LDV (12) includes a diaphragm and a cover (44) which comprises three parts (44a, 44b) and (44c). Exhaled air is used to flush the space around the diaphragm. Thus, any toxic or undesirable gas in the vicinity of the diaphragm is pushed out to atmosphere by the exhaled air flowing past and around the diaphragm.
摘要翻译：机械耦合到肺需求阀（LDV）（12）的面罩（10）。面罩（10）包括主面罩和配合在穿戴者的嘴和鼻上的内罩（15）。内部掩模（15）的内部通过止回阀（16）与主掩模（10）的内部流体连通。主掩模的内部与机械和流体耦合到LDV的供应端口（20）的入口端口（18）流体连通。 LDV（12）包括隔膜和包括三部分（44a，44b）和（44c）的盖（44）。呼出的空气用于冲洗隔膜周围的空间。因此，膜片附近的任何有毒或不需要的气体被流经和隔离膜的呼出气体推到大气中。

10. 发明授权

US07726312B2 Harnesses 有权
公开(公告)号：US07726312B2
公开(公告)日：2010-06-01
申请号：US10812495
申请日：2004-03-30
申请人： Aaron Chapman , David Graham Storey , Paul Townsend
发明人： Aaron Chapman , David Graham Storey , Paul Townsend
IPC分类号： A62B7/00 , A62B9/00
CPC分类号： A45F3/14 , A45F2003/008 , A45F2003/025 , A45F2003/045 , A45F2003/146 , A45F2005/026 , A62B9/04 , A62B25/00
摘要： A harness for use with breathing apparatus has: a flexible hip plate 12 and a flexible bandolier-style shoulder panel 14, linked together by a strap 15, and a waist belt 16 fastenable by a sprung fastener. In use, the flexible hip plate 12 rests against the hip of a user (the left hip in this example), the waist belt is fitted around the waist of the user, and the shoulder panel 14 rests against the shoulder opposite to the hip against which the flexible plate is resting (the right shoulder in this example). At least the bandolier-style panel 14, and optionally also the hip plate 12 of the harness 10, are made of a resilient material which, though flexible, allows the harness substantially to retain its operational configuration even when not being worn. The material is preferably a composite, and may comprise closed cell, open face foam, such as compression moulded EVA foam. Two layers of such foam may be used in a sandwich construction, and may be glued or otherwise bonded together.

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