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1. 发明申请

WO2003073093A1 METHOD OF INSPECTING FOOD STUFFS AND/OR ASSOCIATED PACKAGING 审中-公开
标题翻译：检查食品和/或相关包装的方法
公开(公告)号：WO2003073093A1
公开(公告)日：2003-09-04
申请号：PCT/GB2003/000828
申请日：2003-02-26
申请人： UNIVERSITY OF WARWICK , HUTCHINS, David, Arthur , BILLSON, Duncan, Robert , GAN, Tat, Hean , SCHINDEL, David
发明人： HUTCHINS, David, Arthur , BILLSON, Duncan, Robert , GAN, Tat, Hean , SCHINDEL, David
IPC分类号： G01N29/10
CPC分类号： G01N29/50 , G01N29/0672 , G01N29/11 , G01N29/2406 , G01N29/348 , G01N29/449 , G01N2291/015 , G01N2291/044 , G01N2291/102 , G01N2291/2695
摘要： According to the present invention there is provided a system to perform measurements on liquids, meat, viscous sugar or starch-based materials, and other foodstuffs using air-coupled ultrasound. The technique uses ultrasonic transducers (advantageously capacitive transducers with polymer membranes), to generate ultrasonic signals in air, and to receive these signals after they have passed through the material under test. An ultrasonic pulse-compression process is then applied to increase the sensitivity of signals transmitted through the materials.
摘要翻译：根据本发明，提供了一种使用空气耦合超声波对液体，肉，粘性糖或淀粉基材料以及其他食品进行测量的系统。该技术有利于具有聚合物膜的电容换能器的超声换能器，以在空气中产生超声信号，并且在它们通过被测材料之后接收这些信号。然后应用超声波脉冲压缩处理以增加通过材料传输的信号的灵敏度。

2. 发明申请

WO2007077438A1 ELECTROSTATIC LOUDSPEAKERS 审中-公开
标题翻译：静电扬声器
公开(公告)号：WO2007077438A1
公开(公告)日：2007-07-12
申请号：PCT/GB2006/050468
申请日：2006-12-19
申请人： WARWICK AUDIO TECHNOLOGIES LIMITED , MEDLEY, Andrew, Peter , BILLSON, Duncan, Robert
发明人： MEDLEY, Andrew, Peter , BILLSON, Duncan, Robert
IPC分类号： H04R19/02
CPC分类号： H04R19/02 , H04R29/00
摘要： An electrostatic loudspeaker comprises a multi-layer panel (1) incorporating an electrically insulating middle layer (2) sandwiched between first and second electrically conducting outer layers (3, 4). A signal generator is provided for applying an alternating electrical voltage across the outer layers (3, 4) to initiate vibration due to variation of the electrostatic forces acting between the layers, thereby serving as a loudspeaker. Furthermore at least one of the outer layers (3, 4) is permeable to air displaced by such vibration. Such a loudspeaker can serve as a low cost audio loudspeaker which can be made lightweight and flexible or large-area so as to render it suitable for a wide range of applications, for example to provide sound reproduction in a home environment without requiring any bulky enclosure, public-address systems, or in a notebook computer or mobile telephone.
摘要翻译：静电扬声器包括多层面板（1），其包含夹在第一和第二导电外层（3,4）之间的电绝缘中间层（2）。提供信号发生器，用于跨越外层（3,4）施加交变电压，以由于作用在层之间的静电力的变化而引起振动，由此用作扬声器。此外，外层（3,4）中的至少一个对通过这样的振动而移动的空气是可透过的。这样的扬声器可以用作低成本的音频扬声器，其可以制成轻便和灵活或大面积，以使其适合于广泛的应用，例如在家庭环境中提供声音再现，而不需要任何庞大的外壳，公共地址系统，或在笔记本电脑或移动电话中。

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