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1. 发明授权

US06636201B1 Acoustic touchscreen having waveguided reflector arrays 有权
标题翻译：具有波导反射器阵列的声学触摸屏
公开(公告)号：US06636201B1
公开(公告)日：2003-10-21
申请号：US09579584
申请日：2000-05-26
申请人： Paulo Irulegui Gomes , Joel Kent , James L. Aroyan , Shigeki Kambara
发明人： Paulo Irulegui Gomes , Joel Kent , James L. Aroyan , Shigeki Kambara
IPC分类号： G09G500
CPC分类号： G06F3/0436
摘要： An acoustic touchscreen (1a) has transmitting transducers (23a, 23b) for generating acoustic signals which are deflected across a touch-sensitive area (2) by an array 13 of partially acoustically reflective elements 14. A touch on the touch-sensitive area causes a perturbation in the acoustic signals. After traversing the touch-sensitive area, the acoustic signals are redirected by another array 13 of partially acoustically reflective elements 14, towards receiving transducers (26a, 26b), where the signals (and any perturbations) are sensed. To accommodate touchscreens having narrow border regions (15a), the acoustic signals are propagated across the border regions using acoustic waveguides (18). The waveguide confines the acoustic signals to traveling along a narrow path width, but yet permit them to be deflected across the touch-sensitive area. In this manner, the transducers and reflective elements can in turn be of narrower construction and can fit within narrow border regions.
摘要翻译：声学触摸屏（1a）具有用于产生通过部分声学反射元件14的阵列13在触敏区域（2）上偏转的声学信号的发射换能器（23a，23b）。触敏区域上的触摸导致声信号的扰动。在穿过触摸敏感区域之后，声信号由另一个部分声学反射元件阵列13重定向到接收换能器（26a，26b），其中感测到信号（和任何扰动）。为了适应具有窄边界区域（15a）的触摸屏，声信号通过声波导（18）在边界区域传播。波导将声信号限制在沿着窄路径宽度行进，但是允许它们在触敏区域上偏转。以这种方式，换能器和反射元件又可以具有更窄的结构并且可以适合于狭窄的边界区域。

2. 发明授权

US6163313A Touch sensitive screen and method 失效
标题翻译：触摸屏和方法
公开(公告)号：US6163313A
公开(公告)日：2000-12-19
申请号：US989928
申请日：1997-12-12
申请人： James L. Aroyan , Paulo Irulegui Gomes , Joel Kent
发明人： James L. Aroyan , Paulo Irulegui Gomes , Joel Kent
IPC分类号： G06F3/033 , G06F3/045 , G09G5/00
CPC分类号： G06F3/045 , G06F2203/04113
摘要： A position touch sensor having a substrate and a resistive layer disposed on the substrate. At least one pair of electrodes is positioned on the resistive layer. A portion of one electrode is spaced from a portion of another electrode to produce an overlapped resistive region between the spaced portions of the electrodes. An insulating region extends into and terminates in the overlapped resistive region from a resistive region of the resistive layer outside the overlapped resistive region. A method for controlling the flow of current through a resistive layer for converting physical position information on the resistive layer into electrical signals. The method includes determining a dimension of a length of a generally continuous resistive section which is to be located in the resistive layer. The dimension of the length is determined through the use of electrical excitation in the resistive layer. A first insulating region is disposed in the resistive layer to form a first boundary of the generally continuous resistive section. Subsequently and at a distance from the first insulating region essentially equaling the dimension of the length, a second insulating region is disposed in the resistive layer to form a second boundary of the generally continuous resistive section such that current may be conducted through the generally continuous resistive section between the first and second insulating regions.
摘要翻译：一种位置触摸传感器，其具有设置在基板上的基板和电阻层。至少一对电极位于电阻层上。一个电极的一部分与另一个电极的一部分隔开，以在电极间隔开的部分之间产生重叠的电阻区域。绝缘区域从重叠电阻区域外侧的电阻层的电阻区域延伸到并且终止于重叠电阻区域。一种用于控制通过电阻层的电流流动的方法，用于将电阻层上的物理位置信息转换为电信号。该方法包括确定要位于电阻层中的大致连续的电阻部分的长度尺寸。通过在电阻层中使用电激励来确定长度的尺寸。第一绝缘区域设置在电阻层中以形成大致连续的电阻部分的第一边界。随后并且距离第一绝缘区域的距离基本上等于长度的尺寸，在电阻层中设置第二绝缘区域以形成大致连续的电阻部分的第二边界，使得电流可以通过大体上连续的电阻在第一和第二绝缘区域之间。

3. 发明授权

US06473075B1 Adaptive frequency touchscreen controller employing digital signal processing 有权
标题翻译：采用数字信号处理的自适应频率触摸屏控制器
公开(公告)号：US06473075B1
公开(公告)日：2002-10-29
申请号：US09408591
申请日：1999-09-29
申请人： Paulo Irulegui Gomes , Shigeki Kambara , Hiroshi Kaneda , Joel Kent , Arie Ravid
发明人： Paulo Irulegui Gomes , Shigeki Kambara , Hiroshi Kaneda , Joel Kent , Arie Ravid
IPC分类号： G09G500
CPC分类号： G06F3/0418 , G06F3/0436
摘要： A method and apparatus for adapting an acoustic touchscreen controller to the operating frequency requirements of a specific touchscreen are provided. The adaptive controller can either utilize look-up tables to achieve the desired output frequency or the it can use a multi-step process in which it first determines the frequency requirements of the touchscreen, and then adjusts the burst frequency characteristics, the receiver circuit center frequency, or both in accordance with the touchscreen requirements. In one embodiment, the adaptive controller compensates for global frequency mismatch errors. In this embodiment a digital multiplier is used to modify the output of a crystal reference oscillator. The reference oscillator output is used to control the frequency of the signal from the receiving transducers and/or to generate the desired frequency of the tone burst sent to the transmitting transducers. In another embodiment that is intended to compensate for both global and local frequency variations, the adaptive controller uses a digital signal processor. The digital signal processor, based on correction values contained in memory, defines a specific center frequency which preferably varies according to the signal delay, thus taking into account variations caused by localized variations in the acoustic wave reflective array. In yet another embodiment, a non-crystal local oscillator is used to provide the reference signal in the adaptive controller. The use of such an oscillator allows the controller to be miniaturized to a sufficient extent that it can be mounted directly to a touchscreen substrate. A feedback loop is used to compensate for oscillator drift. A discriminator circuit determines the degree of deviation from the desired frequency. The output from the discriminator is used to adjust the frequency of the local oscillator such that it tracks the frequency of the touchscreen.
摘要翻译：提供了一种用于使声学触摸屏控制器适应特定触摸屏的操作频率要求的方法和装置。自适应控制器可以使用查找表来实现期望的输出频率，或者可以使用多步骤过程，其中它首先确定触摸屏的频率要求，然后调整突发频率特性，接收器电路中心频率或两者均符合触屏要求。在一个实施例中，自适应控制器补偿全局频率失配误差。在本实施例中，使用数字乘法器来修改晶体参考振荡器的输出。参考振荡器输出用于控制来自接收换能器的信号的频率和/或产生发送到发射换能器的音调脉冲串的期望频率。在旨在补偿全局和局部频率变化的另一实施例中，自适应控制器使用数字信号处理器。数字信号处理器基于存储器中包含的校正值来定义特定的中心频率，其优选地根据信号延迟而变化，因此考虑到由声波反射阵列中的局部变化引起的变化。在又一个实施例中，使用非晶体本地振荡器来在自适应控制器中提供参考信号。使用这种振荡器允许控制器被小型化到足以使其可以直接安装到触摸屏基板上。反馈回路用于补偿振荡器漂移。鉴频器电路确定与期望频率的偏差程度。来自鉴别器的输出用于调整本地振荡器的频率，以便跟踪触摸屏的频率。

4. 发明授权

US5739479A Gentle-bevel flat acoustic wave touch sensor 失效
标题翻译：柔和斜面平面声波触摸传感器
公开(公告)号：US5739479A
公开(公告)日：1998-04-14
申请号：US610260
申请日：1996-03-04
申请人： Marcia M. Davis-Cannon , Robert De Renzi , Paulo Irulegui Gomes , Joel Christopher Kent , Michael LeRoy Lewis , Michelle Ocampo , Daniel H. Scharff
发明人： Marcia M. Davis-Cannon , Robert De Renzi , Paulo Irulegui Gomes , Joel Christopher Kent , Michael LeRoy Lewis , Michelle Ocampo , Daniel H. Scharff
IPC分类号： G06F3/033 , G08C21/00 , G09G3/02
CPC分类号： G06F3/0436
摘要： An acoustic wave touch sensor comprising an acoustic wave transducer, for transducing an acoustic wave; a substrate, having a front surface. A surface bound acoustic wave interface, having at one least bevel edge, is provided, having an transmitted acoustic wave signal attenuation of less than about 3 dB. The acoustic wave transducer is mounted to transmit the acoustic wave through the interface into the substrate, so that the energy of the acoustic wave appears at the surface. The acoustic wave transducer is mounted on a beveled region of the substrate, inclined to the front surface. The beveled edge has an effective radius which is small as compared to the wavelength and a bevel angle such that the acoustic wave is attenuated by less than about 3 dB on transmission across the edge. In this manner, means are provided to recess transducers for improved product robustness and compactness of design.
摘要翻译：一种声波触摸传感器，包括用于传导声波的声波换能器; 具有前表面的基板。提供具有至少一个斜边缘的表面结合声波接口，其具有小于约3dB的传播声波信号衰减。安装声波传感器以将声波通过界面传输到基板中，使得声波的能量出现在表面。声波传感器安装在基板的倾斜区域上，与前表面倾斜。斜边具有与波长相比较小的有效半径和斜角，使得声波在穿过边缘的透射上衰减小于约3dB。以这种方式，提供了用于凹入换能器的装置，以提高产品的鲁棒性和设计的紧凑性。

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