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1. 发明授权

US07224813B2 Loudspeaker using an electro-active device 失效
标题翻译：扬声器使用电动装置
公开(公告)号：US07224813B2
公开(公告)日：2007-05-29
申请号：US10168736
申请日：2000-12-21
申请人： Anthony Hooley , David Henry Pearce , Gareth McKevitt , Mark Richard Shepherd , James Allan , Simon Andrew Longbottom , Ursula Ruth Lenel
发明人： Anthony Hooley , David Henry Pearce , Gareth McKevitt , Mark Richard Shepherd , James Allan , Simon Andrew Longbottom , Ursula Ruth Lenel
IPC分类号： H04R25/00
CPC分类号： H04R17/00 , H01L41/094 , H04R2217/01 , Y10S310/80
摘要： A loudspeaker comprising: a support, a sound-generating element mounted to the support for vibration to generate sound; and an electro-active device coupled between the support and the sound-generating element for vibrating the sound-generating element in response to an electrical signal. The electro-active device comprises a structure extending along a minor axis which extends in a curve around a major axis parallel to the vibration direction of the sound-generating element, the structure comprising successive electro-active portions arranged with electrodes to bend around the minor axis on activation in response to application of the electrical signal to the electrodes, and coupled together such that bending of successive portions causes concomitant rotation of adjacent portions around the minor axis adding incrementally along the minor axis, which rotation causes concomitant change of the axial length of the structure along the major axis.
摘要翻译：一种扬声器，包括：支撑件，安装到所述支撑件上以产生声音的振动的发音元件; 以及耦合在所述支撑件和所述发声元件之间的电活动装置，用于响应于电信号振动所述发声元件。电活动装置包括沿着短轴延伸的结构，所述结构沿着平行于发声元件的振动方向的长轴的曲线延伸，该结构包括连续的电活动部分，其布置有电极以围绕次要弯曲响应于将电信号施加到电极而被激活，并且耦合在一起，使得连续部分的弯曲导致围绕短轴的相邻部分的伴随旋转沿着短轴逐渐增加，该旋转引起轴向长度的伴随变化的长轴上的结构。

2. 发明授权

US06833656B2 Electro active devices 有权
标题翻译：电活动装置
公开(公告)号：US06833656B2
公开(公告)日：2004-12-21
申请号：US10168730
申请日：2002-10-10
申请人： Anthony Hooley , David Henry Pearce , Ursula Ruth Lenel , Gareth McKevitt , Mark Richard Shepherd
发明人： Anthony Hooley , David Henry Pearce , Ursula Ruth Lenel , Gareth McKevitt , Mark Richard Shepherd
IPC分类号： H01L4108
CPC分类号： H04R17/00 , H01L41/094 , H04R2217/01 , Y10S310/80
摘要： The present invention relates to an electro-active device having an electro-active structure extending along a minor axis (36) which is curved, for example in a helix around a major axis (37). The electro-active structure comprises successive electro-active portions (35) extending around said minor axis and arranged with electrodes to bend, when activated, around the minor axis (36) such that bending of the successive portions (35) is concomitant with rotation of the electro-active structure about the minor axis (36) adding incrementally along the minor axis (36). The electro-active structure generates displacement out of the local plane in which the minor axis is curved. The electra-active structure may be continuous electro-active member (35) extending along and curving around the minor axis (35), for example helically to form a helical helix. Alternatively, the electro-active structure may be a plurality of discrete elements (211) connected together. The electro-active portions preferably have a bender structure formed from a plurality of layers. The device may be used as a driver, a sensor or a generator.
摘要翻译：本发明涉及具有沿着短轴（36）延伸的电活性结构的电活性器件，该短轴（36）例如以围绕长轴（37）的螺旋线弯曲。电活性结构包括围绕所述短轴延伸的连续的电活动部分（35），并布置有电极，当被激活时，其绕着短轴（36）弯曲，使得连续部分（35）的弯曲伴随着旋转所述电活性结构围绕所述短轴（36）沿着所述短轴（36）逐渐增加。电活动结构在短轴弯曲的局部平面中产生位移。电活性结构可以是沿着短轴（35）延伸并围绕短轴（35）弯曲的连续的电活性构件（35），例如螺旋形以形成螺旋形螺旋。或者，电活性结构可以是连接在一起的多个分立元件（211）。电活性部分优选具有由多个层形成的弯曲结构。该装置可以用作驱动器，传感器或发生器。

3. 发明授权

US07069795B2 Sensor using electro active curved helix and double helix 失效
标题翻译：传感器使用电活性弯曲螺旋和双螺旋
公开(公告)号：US07069795B2
公开(公告)日：2006-07-04
申请号：US10480675
申请日：2002-06-19
申请人： Gareth McKevitt , Anthony Hooley , David Henry Pearce , Ursula Ruth Lenel , Mark Richard Shepherd
发明人： Gareth McKevitt , Anthony Hooley , David Henry Pearce , Ursula Ruth Lenel , Mark Richard Shepherd
IPC分类号： G01L1/04 , H04R17/00
CPC分类号： H01L41/1132 , G01D5/12
摘要： Various sensors use an electro-active device (11) electrically connected to a detector circuit. The electro-active device (11) comprises an electro-active structure in the form of a continuous electro-active member (12) curving in a helix around a minor axis (13) which is in itself curved for example in a helix around a major axis (14). On activation by relative displacement of the ends (16) of the device (11), the electro-active structure twists around the minor axis due to the fact that the minor axis (13) is curved. The continuous member (12) has a bender construction of a plurality of layers (21) and (22) including at least one layer of electro-active material so that concomitantly with the twisting the continuous member (12) bends generating an electrical signal detected by the detector circuit. The electro-active device (11) is advantageous as a sensing element in a sensor because it has a large displacement, high sensitivity and low compliance.
摘要翻译：各种传感器使用电连接到检测器电路的电活动装置（11）。电活性器件（11）包括呈短轴弯曲的连续电活性部件（12）形式的电活性结构，短轴（13）本身例如以螺旋形弯曲长轴（14）。在通过装置（11）的端部（16）的相对位移激活时，由于短轴（13）弯曲的事实，电活动结构围绕短轴扭转。连续构件（12）具有包括至少一层电活性材料的多个层（21）和（22）的弯曲结构，从而与扭转相伴随，连续构件（12）弯曲产生检测到的电信号由检测器电路。电动装置（11）作为传感器中的感测元件是有利的，因为它具有大的位移，高灵敏度和低顺应性。

4. 发明授权

US07068930B2 Camera lens positioning using a electro-active device 失效
标题翻译：相机镜头定位使用电动装置
公开(公告)号：US07068930B2
公开(公告)日：2006-06-27
申请号：US10480664
申请日：2002-06-19
申请人： Gareth McKevitt , Anthony Hooley , James Allan , David Henry Pearce , Ursula Ruth Lenel
发明人： Gareth McKevitt , Anthony Hooley , James Allan , David Henry Pearce , Ursula Ruth Lenel
IPC分类号： G03B3/10
CPC分类号： G02B7/023 , G03B17/00 , H04N5/2254
摘要： A camera (30) uses an electro-active device (11) to position a movable lens. The electro-active device (11) comprises an electro-active structure in the form of a continuous electro-active member (12) curving in a helix around a minor axis (13) which is in itself curved for example in a helix around a major axis (14). The continuous member (12) has a bender construction of a plurality of layers (21 and 22) including at least one layer of electro-active material so that it bends, on activation, around the minor axis (13). Concomitantly with the bending, the electro-active structure twists around the minor axis. Concomitantly with that twisting, relative displacement of the ends (16) of the device (11) occurs due to the combination of the twisting around the minor axis (13) and the fact that the minor axis (13) is curved. This structure of the electro-active device (11) is compact and provides for linear displacement, thereby making it suitable for positioning the lens of the camera (30).
摘要翻译：相机（30）使用电动装置（11）来定位可移动透镜。电活性器件（11）包括呈短轴弯曲的连续电活性部件（12）形式的电活性结构，短轴（13）本身例如以螺旋形弯曲长轴（14）。连续构件（12）具有包括至少一层电活性材料层的多个层（21和22）的弯曲结构，使得其在启动时绕短轴（13）弯曲。伴随着弯曲，电活动结构围绕短轴扭转。伴随着扭转，由于围绕短轴（13）的扭转和短轴（13）弯曲的事实的组合，发生装置（11）的端部（16）的相对位移。电活动装置（11）的这种结构是紧凑的并且提供线性位移，从而使其适合于定位相机（30）的透镜。

5. 发明授权

US07166952B2 Piezoelectric structures 失效
标题翻译：压电结构
公开(公告)号：US07166952B2
公开(公告)日：2007-01-23
申请号：US10491220
申请日：2002-09-26
申请人： Richard Topliss , David Livingstone , Andrew Matheson , Gareth McKevitt , Mark Richard Shepherd , Anthony Hooley
发明人： Richard Topliss , David Livingstone , Andrew Matheson , Gareth McKevitt , Mark Richard Shepherd , Anthony Hooley
IPC分类号： H01L41/08
CPC分类号： H01L41/094 , H01L41/098
摘要： An equivalent to the spatial separation either side of a nominal median plane that is inherent in a bimorph (with one piezoelectric layer on one side, and the second on the other side of the plane) is attained by structurally shaping the cross-section of a simple, single piezoelectric layer (11) such that it has a multiplicity of piezoelectric portions arranged in two generally-planar groups one either side of a median plane, so that any dimension change undergone by a portion on one side of that plane will tend to bend the whole device in the opposite direction to the same sense dimension change undergone by a portion on the other side of that plane. The simple, single layer acts as though it were a bimorph if elongate and beam-like, bending along its length, one end moving up/down, or back/forth, relative to the other but with any need for an internal, electrode.
摘要翻译：相当于双压电晶片中固有的标称中间平面的两侧（在一侧具有一个压电层，而在该平面的另一侧上的第二面）的空间分离是通过结构地成形一个简单的单个压电层（11），使得其具有多个压电部分，其布置在中间平面的任一侧上的两个大致平面的组中，使得由该平面的一侧上的部分所经历的任何尺寸变化将倾向于使整个设备沿与该平面另一侧的部分相同的感官尺寸变化的相反方向弯曲。简单的单层如同细长的和束状的，像其一样弯曲，一端向上/向下移动，或相对于另一端向前/向前弯曲，但是任何需要内部的电极。

6. 发明申请

US20050040736A1 Piezoelectric structures 失效
标题翻译：压电结构
公开(公告)号：US20050040736A1
公开(公告)日：2005-02-24
申请号：US10491220
申请日：2002-09-26
申请人： Richard Topliss , David Livingstone , Andrew Matheson , Gareth McKevitt , Mark Shepherd , Anthony Hooley
发明人： Richard Topliss , David Livingstone , Andrew Matheson , Gareth McKevitt , Mark Shepherd , Anthony Hooley
IPC分类号： H01L41/09 , H01L41/187 , H01L41/22 , H02N2/00 , H01L41/08
CPC分类号： H01L41/094 , H01L41/098
摘要： An equivalent to the spatial separation either side of a nominal median plane that is inherent in a bimorph (with one piezoelectric layer on one side, and the second on the other side of the plane) is attained by structurally shaping the cross-section of a simple, single piezoelectric layer (11) such that it has a multiplicity of piezoelectric portions arranged in two generally-planar groups one either side of a median plane, so that any dimension change undergone by a portion on one side of that plane will tend to bend the whole device in the opposite direction to the same sense dimension change undergone by a portion on the other side of that plane. The simple, single layer acts as though it were a bimorph if elongate and beam-like, bending along its length, one end moving up/down, or back/forth, relative to the other but with any need for an internal, electrode.
摘要翻译：相当于双压电晶片中固有的标称中间平面的两侧（在一侧具有一个压电层，而在该平面的另一侧上的第二面）的空间分离是通过结构地成形一个简单的单个压电层（11），使得其具有多个压电部分，其布置在中间平面的任一侧上的两个大致平面的组中，使得由该平面的一侧上的部分所经历的任何尺寸变化将倾向于使整个设备沿与该平面另一侧的部分相同的感官尺寸变化的相反方向弯曲。简单的单层如同细长的和束状的，像其一样弯曲，一端向上/向下移动，或相对于另一端向前/向前弯曲，但是任何需要内部的电极。

7. 发明授权

US06677034B1 Aerogels, piezoelectric devices, and uses therefor 失效
标题翻译：气凝胶，压电装置及其用途
公开(公告)号：US06677034B1
公开(公告)日：2004-01-13
申请号：US09508009
申请日：2000-03-06
申请人： Anthony Hooley , David Henry Pearce , Luc Forest
发明人： Anthony Hooley , David Henry Pearce , Luc Forest
IPC分类号： B32B516
CPC分类号： H04R1/288 , B06B1/0603 , B41J2/1607 , B41J2/1623 , B41J2/1632 , F16C29/00 , F16C29/02 , F16C29/025 , F16C32/06 , G10K11/002 , G10K11/162 , H01F1/44 , H01L41/0825 , H01L41/094 , H01L41/333 , H02K1/02 , H02K7/088 , H02K33/16 , H02K41/0354 , H04R2217/01 , Y10T428/25 , Y10T428/2848 , Y10T428/2982
摘要： In its first aspect the invention provides an electromechanical acoustic transducer (5) which is resistively terminated at the rear with a closely-coupled sound absorber (7) made from an aerogel with good acoustic absorption at low frequencies. The invention also provides an aerogel suitable for this use and which is a conglomerate of small particles packed so that there are spaces left therebetween to allow the passage of sound. Moreover, the invention provides an aerogel suitable for this use and comprised of multiple layers (17a etc.) of materials of graded properties, or comprised of material of continuously varying properties throughout the thickness of the absorbing structure, in the principal direction of sound from the source.
摘要翻译：在其第一方面，本发明提供了一种机电声学换能器（5），其在后部通过紧密耦合的吸声器（7）电阻终止，所述吸声器（7）由在低频下具有良好的吸声性的气凝胶制成。本发明还提供了一种适合于这种用途的气凝胶，并且是一种小颗粒的聚集体，其中包含一些留在其间的空间以允许声音通过。此外，本发明提供了一种适合于这种用途的气凝胶，其由层叠性质的材料的多层（17a等）组成，或由吸收结构的整个厚度上连续变化的材料构成，其主要方向为来源。

8. 发明申请

US20070177860A1 Camera autofocus 审中-公开
标题翻译：相机自动对焦
公开(公告)号：US20070177860A1
公开(公告)日：2007-08-02
申请号：US10593100
申请日：2005-03-14
申请人： Anthony Hooley , David Richards , James Allan , Robert Leedham , Mark Shepherd
发明人： Anthony Hooley , David Richards , James Allan , Robert Leedham , Mark Shepherd
IPC分类号： G02B7/02 , G11B7/00 , G03B17/00
CPC分类号： G02B7/08 , G03B13/36 , H04N5/23212
摘要： A camera comprises an image sensor arranged to generate an image signal, and a lens arrangement, which focuses an image onto the image sensor, the focus being variable in accordance with a control signal applied thereto. In the case that a piezoelectric actuator experiencing hysteresis is used to drive movement of the lens arrangement to vary the focus of the image, autofocusing is achieved by applying a control signal to the piezoelectric actuator with a value at an extreme of a predetermined range and subsequently changing the control signal monotonically across the predetermined range to determine a position at which the focus quality is at an acceptable level. Thus, this position may be returned to despite the hysteresis. In the case that an encoder is arranged to encode the image signal from the image sensor into an encoded signal compressed form, the encoder is operated in two modes in which different spatial frequency components are encoded preferentially, the amount of data in one of the modes being used as the basis for autofocusing. To assist in autofocusing the position of the lens arrangement may be determined using a light source and an optical element which is fixed to and movable with the lens arrangement, the optical element being arranged so that movement of the lens arrangement causes variation in the light incident on the image sensor.
摘要翻译：相机包括被配置为产生图像信号的图像传感器和将图像聚焦到图像传感器上的透镜装置，所述焦点可根据施加到其上的控制信号而变化。在使用经历滞后的压电致动器来驱动透镜装置的移动以改变图像的焦点的情况下，通过将控制信号施加到具有预定范围的极端处的值的压电致动器来实现自动聚焦在预定范围内单调地改变控制信号，以确定聚焦质量处于可接受水平的位置。因此，尽管有迟滞，仍可能返回这个位置。在编码器被配置为将来自图像传感器的图像信号编码成编码信号压缩形式的情况下，编码器以两种模式操作，其中不同的空间频率分量被优先编码，在一种模式中的数据量被用作自动对焦的基础。为了帮助自动对焦，可以使用光源和固定到透镜装置并可移动的光学元件来确定透镜装置的位置，光学元件布置成使得透镜装置的移动导致光入射的变化在图像传感器上。

9. 发明申请

US20090161880A1 METHOD AND APPARATUS TO CREATE A SOUND FIELD 审中-公开
标题翻译：创造声场的方法和设备
公开(公告)号：US20090161880A1
公开(公告)日：2009-06-25
申请号：US12391375
申请日：2009-02-24
申请人： Anthony Hooley , Paul Thomas Troughton , Angus Gavin Goudie , Mark George Easton , Irving Alexander Bienek , James Davies , Damon Thomas Ryan , Paul Raymond Windle
发明人： Anthony Hooley , Paul Thomas Troughton , Angus Gavin Goudie , Mark George Easton , Irving Alexander Bienek , James Davies , Damon Thomas Ryan , Paul Raymond Windle
IPC分类号： H04R5/00
CPC分类号： F41H13/0081 , G10K15/04 , H04R1/26 , H04R1/403 , H04R3/12 , H04R2201/401 , H04R2203/12 , H04R2205/022 , H04S1/002 , H04S3/00 , H04S3/002
摘要： The invention generally relates to a method and apparatus for taking an input signal, replicating it a number of times and modifying each of the replicas before routing them to respective output transducers such that a desired sound field is created. This sound field may comprise a directed beam, focused beam or a simulated origin. In a first aspect, delays are added to sound channels to remove the effects of different travelling distances. In a second aspect, a delay is added to a video signal to account for the delays added to the sound channels. In a third aspect, different window functions are applied to each channel to give improved flexibility of use. In a fourth aspect, a smaller extent of transducers is used top output high frequencies than are used to output low frequencies. An array having a larger density of transducers near the center is also provided. In a fifth aspect, a line of elongate transducers is provided to give good directivity in a plane. In a sixth aspect, sound beams are focused in front or behind surfaces to give different beam widths and simulated origins. In a seventh aspect, a camera is used to indicate where sound is directed.
摘要翻译：本发明一般涉及一种用于取得输入信号的方法和装置，在将它们复制到各自的输出换能器之前将其复制多次并修改每个复制品，使得产生期望的声场。该声场可以包括定向光束，聚焦光束或模拟原点。在第一方面，将声音添加到声道以消除不同移动距离的影响。在第二方面，将延迟添加到视频信号以解释添加到声音通道的延迟。在第三方面，将不同的窗口功能应用于每个通道以提供改进的使用灵活性。在第四方面，使用较小程度的换能器用于比用于输出低频的顶部输出高频。还提供了在中心附近具有较大密度的换能器的阵列。在第五方面，提供一系列细长的换能器以在平面中给出良好的方向性。在第六方面，声束聚焦在表面的前面或后面，以提供不同的光束宽度和模拟的来源。在第七方面中，使用相机来指示声音的定向。

10. 发明授权

US07215788B2 Digital loudspeaker 失效
标题翻译：数字扬声器
公开(公告)号：US07215788B2
公开(公告)日：2007-05-08
申请号：US11207110
申请日：2005-08-18
申请人： Anthony Hooley
发明人： Anthony Hooley
IPC分类号： H03F21/00
CPC分类号： H03K7/08 , H04R1/005 , H04R1/227 , H04R1/403 , H04R3/12 , H04R27/00 , H04R2203/12 , H04R2430/20
摘要： A digital pulse-width-modulation (PWM) generator comprising: an n bit digital magnitude comparator having first and second n bit inputs and an output indicative of the relative values of the signals applied at the first and second inputs; a first n bit digital up/down counter having a count direction input coupled to receive a sign bit of a digital unary input signal, an n bit parallel binary count output connected to the first n bit input of the magnitude comparator, and a clock input; a second n bit counter having a clock input coupled to receive a constant rate clock signal and an n bit parallel binary count output connected to the second n bit input of the magnitude comparator; an AND gate having a first input coupled to receive the constant rate clock signal in frequency divided form and a second input coupled to receive a magnitude portion of the digital unary input signal, and further having an output connected to the clock input of the first counter; and wherein the comparator continually generates an output signal indicative of the relative magnitudes of the counts of the first and second counters, whereby said output signal is a PWM output signal with an average value representing a ramp voltage having a slope determined by magnitude portion of the digital unary input signal with a direction of a slope of the output signal being determined by the polarity of the sign bit.
摘要翻译：一种数字脉宽调制（PWM）发生器，包括：具有第一和第二n位输入的n位数字幅度比较器和指示在第一和第二输入处施加的信号的相对值的输出; 具有耦合以接收数字一元输入信号的符号位的计数方向输入的第一n位数字上/下计数器，连接到幅度比较器的第一n位输入的n位并行二进制计数输出和时钟输入 ; 第二n位计数器，其具有耦合以接收恒定速率时钟信号的时钟输入和连接到幅度比较器的第二n位输入的n位并行二进制计数输出; 与门，其具有耦合以接收频率分频形式的恒定速率时钟信号的第一输入端和耦合以接收数字一元输入信号的幅度部分的第二输入，并且还具有连接到第一计数器的时钟输入的输出 ; 并且其中所述比较器连续地产生指示所述第一和第二计数器的计数的相对大小的输出信号，由此所述输出信号是PWM输出信号，其平均值表示具有由所述第一和第二计数器的大小部分确定的斜率的斜坡电压具有输出信号的斜率方向的数字一元输入信号由符号位的极性决定。

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