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1. 发明授权

US4853498A Position measurement apparatus for capacitive touch panel system 失效
标题翻译：电容式触摸屏系统位置测量装置
公开(公告)号：US4853498A
公开(公告)日：1989-08-01
申请号：US205896
申请日：1988-06-13
申请人： Robert D. Meadows , Roger J. McCoy
发明人： Robert D. Meadows , Roger J. McCoy
IPC分类号： G06F3/045 , G06F3/033 , G06F3/041 , G06K11/06
CPC分类号： G06F3/041
摘要： A capacitive touch panel system (10) having a faceplate (14) with an electrically conductive layer (20) of a consistent resistivity employs a position measurement apparatus (12) to generate an address signal indicative of a position (46) on the faceplate in contact with a stylus (48). The position measurement apparatus includes a position measurement signal source (62) that generates a square-wave measurement signal of substantially constant frequency and a preselected magnitude. The position measurement signal is applied to a first pair of opposed electrodes (36) and (40) and a second pair of opposed electrodes (38) and (42) positioned along respective side margins (26, 30, 28, and 32) of the faceplate. The resistivity of the conductive layer establishes effective resistances of R.sub.x and R.sub.y between the respective first and second pairs of electrodes. Position measurement subcircuits (60a-60d) measure currents drawn through the electrodes whenever the stylus contacts the conductive layer, thereby to form an address signal indicative of the location at which the stylus contacts the faceplate.
摘要翻译：具有具有一致电阻率的导电层（20）的面板（14）的电容式触摸面板系统（10）采用位置测量装置（12），以产生指示面板上位置（46）的地址信号与触控笔（48）接触。位置测量装置包括产生基本上恒定频率的方波测量信号和预选量值的位置测量信号源（62）。位置测量信号被施加到第一对相对电极（36）和（40）以及第二对相对电极（38）和（42），其沿着相应侧边缘（26,30,28和32）定位面板。导电层的电阻率在相应的第一和第二对电极之间建立Rx和Ry的有效电阻。位置测量子电路（60a-60d）测量每当触控笔接触导电层时通过电极汲取的电流，从而形成指示触控笔接触面板的位置的地址信号。

2. 发明授权

US4698460A Touch panel system 失效
标题翻译：触摸屏系统
公开(公告)号：US4698460A
公开(公告)日：1987-10-06
申请号：US900646
申请日：1986-08-26
申请人： Philip T. Krein , Robert D. Meadows , Bruce Murdock , Daniel G. Teichmer
发明人： Philip T. Krein , Robert D. Meadows , Bruce Murdock , Daniel G. Teichmer
IPC分类号： G06F3/044 , G06F3/033 , G06F3/041 , G06F3/045 , G06F3/048 , G08C21/00
CPC分类号： G06F3/0418 , G06F3/045
摘要： A touch panel has panel scanning signals selectively applied to the four sides of a touch sensing surface of the panel so as to establish alternating current voltage gradients in desired directions across the touch sensing surface. When the panel is touched, touch signals or currents result and are utilized by a touch location circuit in determining the location of touch. The impedance touch current resulting from a user's touch may also be determined and used. The touch panel circuit automatically compensates for changes in impedance touch current, such as result when users touch the panel with ungloved and gloved fingers. An analog multiplier is included in the touch location circuit to improve noise rejection. Auto nulling and automatic frequency adjustment is included in the touch panel device, together with overcurrent protection circuitry.
摘要翻译：触摸面板具有选择性地施加到面板的触摸感测表面的四个侧面的面板扫描信号，以便在穿过触摸感测表面的期望方向上建立交流电压梯度。当面板被触摸时，触摸信号或电流产生并被触摸位置电路用于确定触摸的位置。也可以确定和使用由用户触摸产生的阻抗触摸电流。触摸面板电路自动补偿阻抗触摸电流的变化，例如用户用不受欢迎和戴手套的手指触摸面板时的结果。触摸定位电路中包含一个模拟乘法器，以改善噪声抑制。自动归零和自动频率调整包括在触摸屏设备中，以及过流保护电路。

3. 发明授权

US5223784A Method and circuit for triggering an electronic instrument only once during a period of a signal 失效
标题翻译：在信号期间仅触发电子仪器一次的方法和电路
公开(公告)号：US5223784A
公开(公告)日：1993-06-29
申请号：US711007
申请日：1991-06-01
申请人： Theodore G. Nelson , Calvin D. Diller , Robert D. Meadows
发明人： Theodore G. Nelson , Calvin D. Diller , Robert D. Meadows
IPC分类号： G01R13/32
CPC分类号： G01R13/32
摘要： A method and circuit for triggering an electronic instrument only once during a period of an input signal having multiple triggering events during that period. A signal applied to an electronic instrument, such as an oscilloscope, is acquired. Qualified triggering events occurring on the acquired signal are identified. A selected one of the qualified triggering events during the period of the applied signal causes a trigger signal output to occur, while other qualified triggering events are ignored. In the preferred embodiment a triggering event is qualified by a first comparator that compares the input signal to a first reference level and produces a predetermined logic level output if the input signal bears a predetermined relationship to the reference level. When a qualified triggering event occurs, a buffer amplifier applies the predetermined logic level to charge a capacitor, which thereafter stores some energy from the input signal and applies it to a comparator for a predetermined period of time. The comparator compares the voltage on the capacitor to a second reference level and produces a pulse if the capacitor voltage has a predetermined relationship to the second reference level. The leading edge of the pulse comprises a trigger output signal. Subsequent triggering events which occur before a predetermined period of time are unable to produce another trigger signal. Five alternative embodiments employing the same general principle as the preferred embodiment are disclosed.
摘要翻译：一种用于在该期间具有多次触发事件的输入信号期间仅触发一次电子仪器的方法和电路。获取施加到诸如示波器的电子仪器的信号。识别在获取的信号上发生的合格触发事件。在施加的信号周期期间选定的一个合格的触发事件导致触发信号输出发生，而其他合格的触发事件被忽略。在优选实施例中，触发事件由第一比较器限定，第一比较器将输入信号与第一参考电平进行比较，并且如果输入信号与参考电平具有预定关系，则产生预定的逻辑电平输出。当发生合格的触发事件时，缓冲放大器施加预定的逻辑电平以对电容器进行充电，此后电容器从输入信号中存储一些能量并将其施加到比较器预定的时间段。比较器将电容器上的电压与第二参考电平进行比较，并且如果电容器电压与第二参考电平具有预定关系，则产生脉冲。脉冲的前沿包括触发输出信号。在预定时间段之前发生的后续触发事件不能产生另一个触发信号。公开了采用与优选实施例相同的一般原理的五个替代实施例。

4. 发明授权

US4916308A Integrated liquid crystal display and optical touch panel 失效
标题翻译：集成液晶显示器和光学触摸屏
公开(公告)号：US4916308A
公开(公告)日：1990-04-10
申请号：US258420
申请日：1988-10-17
申请人： Robert D. Meadows
发明人： Robert D. Meadows
IPC分类号： G06F3/042 , G06F3/033 , G06F3/041 , G06F3/048 , G06K11/06
CPC分类号： G06F3/0412 , G06F3/0421
摘要： A flat panel liquid crystal display (12) with an integrated touch panel has a multitude of pixels (28) arranged in multiple columns and multiple rows. The pixels (28) of the first column (54) and last column (66), and of the first row (60) and of the last row (72) are controlled in conjunction with emitters (52, 58) and detectors (64, 70) with associated mirrors (74, 80, 82, 84) to create a sequence of light beams that extend across the display panel (12) in both the X and Y directions. Whenever a stylus (86) is placed near the display panel, two orthogonal light beams are interrupted corresponding to the X and Y positions of the stylus (86) relative to the display panel (12).

5. 发明授权

US4962380A Method and apparatus for calibrating an interleaved digitizer 失效
标题翻译：用于校准交错数字化仪的方法和装置
公开(公告)号：US4962380A
公开(公告)日：1990-10-09
申请号：US410687
申请日：1989-09-21
申请人： Robert D. Meadows
发明人： Robert D. Meadows
IPC分类号： H03M1/10 , H03M1/12
CPC分类号： H03M1/1009 , H03M1/1215
摘要： An apparatus and method for calibrating an interleaved digitizer includes a system oscillator for generating a master clock signal and two or more cascaded phase shifting circuits for producing clock signals that are phase shifted copies of the master clock signal. The calibrator further includes two or more A/D converters for digitizing the master clock signal at time intervals provided by the phase shifted clock signals to produce a digitized output. The digitized output is then stored in a memory. Once stored, the digitized output is compared to predetermined reference levels and the phase shift of the phase shifting circuits is appropriately adjusted as a function of the difference between the stored digitized output and the predetermined reference levels. After the phase shift of each of the phase shifting circuits has been adjusted the digitizer input is switched from digitizing the master clock signal to digitizing an analog input signal, thus converting the calibrator into an accurately calibrated digitizing system.
摘要翻译：用于校准交错数字转换器的装置和方法包括用于产生主时钟信号的系统振荡器和用于产生作为主时钟信号的相移副本的时钟信号的两个或多个级联移相电路。校准器还包括两个或更多个A / D转换器，用于以由相移时钟信号提供的时间间隔数字化主时钟信号以产生数字化输出。然后将数字化输出存储在存储器中。一旦存储，将数字化输出与预定参考电平进行比较，并且相移电路的相移作为存储的数字化输出和预定参考电平之间的差的函数被适当地调整。在每个移相电路的相移已被调整之后，数字转换器输入从数字化主时钟信号切换到数字化模拟输入信号，从而将校准器转换成精确校准的数字化系统。

6. 发明授权

US4707845A Touch panel with automatic nulling 失效
标题翻译：触摸面板具有自动归零
公开(公告)号：US4707845A
公开(公告)日：1987-11-17
申请号：US900559
申请日：1986-08-26
申请人： Philip T. Krein , Robert D. Meadows , Bruce Murdock , Daniel G. Teichmer
发明人： Philip T. Krein , Robert D. Meadows , Bruce Murdock , Daniel G. Teichmer
IPC分类号： G06F3/044 , G06F3/033 , G06F3/041 , G06F3/045 , G06F3/048 , G08C21/00
CPC分类号： G06F3/0418
摘要： A touch panel has panel scanning signals selectively applied to the four sides of a touch sensing surface of the panel so as to establish alternating current voltage gradients in desired directions across the touch sensing surface. When the panel is touched, touch signals result and are utilized by a touch location circuit in determining the location of touch. The impedence touch current resulting from a user's touch may also be determined and used. The touch panel circuit automatically compensates for any variations in touch signals which occur when the touch panel is untouched and automatically nulls the touch signals under such circumstances to enhance the accuracy of touch location determination.
摘要翻译：触摸面板具有选择性地施加到面板的触摸感测表面的四个侧面的面板扫描信号，以便在穿过触摸感测表面的期望方向上建立交流电压梯度。当面板被触摸时，触摸信号的结果被触摸位置电路用于确定触摸的位置。也可以确定和使用由用户触摸产生的阻抗触摸电流。触摸面板电路自动补偿当触摸面板未触摸时发生的触摸信号的任何变化，并且在这种情况下自动使触摸信号为零，以增强触摸位置确定的准确性。

7. 发明授权

US4698461A Touch panel with automatic frequency control 失效
标题翻译：具有自动频率控制的触摸面板
公开(公告)号：US4698461A
公开(公告)日：1987-10-06
申请号：US900567
申请日：1986-08-26
申请人： Robert D. Meadows , Philip T. Krein , Bruce Murdock
发明人： Robert D. Meadows , Philip T. Krein , Bruce Murdock
IPC分类号： G06F3/044 , G06F3/033 , G06F3/041 , G06F3/045 , G06F3/048 , G08C21/00
CPC分类号： G06F3/0418 , G06F3/045
摘要： A touch panel has panel scanning signals selectively applied to the four sides of a touch sensing surface of the panel so as to establish alternating current voltage gradients in desired directions across the touch sensing surface. When the panel is touched, touch signals result and are utilized by a touch location circuit in determining the location of touch. The impedence touch current resulting from a user's touch may also be determined and used. The touch panel circuit automatically adjusts the frequency of the applied panel signals to shift this frequency away from fixed frequency interference spectra, such as due to cathode-ray tube flyback signals, in the environment in which the touch panel is used. The touch location thereby minimizes the effects of such spectra on touch location determinations.
摘要翻译：触摸面板具有选择性地施加到面板的触摸感测表面的四个侧面的面板扫描信号，以便在穿过触摸感测表面的期望方向上建立交流电压梯度。当面板被触摸时，触摸信号的结果被触摸位置电路用于确定触摸的位置。也可以确定和使用由用户触摸产生的阻抗触摸电流。触摸面板电路自动调整所应用的面板信号的频率，以便在使用触摸面板的环境中将该频率从固定频率干扰频谱（例如由于阴极射线管反激信号）偏离。因此，触摸位置使得这种光谱对触摸位置确定的影响最小化。

8. 发明授权

US06319732B1 Method for controlling the temperature of a layer growing on a wafer 失效
标题翻译：用于控制在晶片上生长的层的温度的方法
公开(公告)号：US06319732B1
公开(公告)日：2001-11-20
申请号：US09341954
申请日：1999-10-25
申请人： Ray Dils , Robert D. Meadows
发明人： Ray Dils , Robert D. Meadows
IPC分类号： H01L2100
CPC分类号： B24B37/013 , H01L22/12 , H01L22/26
摘要： A method for controlling the temperature of a growing semitransparent layer (12) during a production deposition process on a major surface of a production wafer (14). During the production process heat is applied to the wafer by an intensity adjustable heat source (34) and the production wafer emits a broad spectrum of light. In the method a test deposition process is performed using a set of infrared wavelengths of the light emitted from a test wafer to determine a set of test parameter values including temperature values over time for the test growing layer. The production deposition process is then performed and the intensity of infrared light emissions from the wafer are measured to form a set of production infrared light intensity values at the same test run set of infrared wavelengths used in the test deposition. The production infrared light intensity values and the set of test parameter values are used to compute an error correction value that is used to correct the intensity of the heat source during the production deposition.
摘要翻译：一种用于在生产沉积过程中在生产晶片（14）的主表面上控制生长中的半透明层（12）的温度的方法。在生产过程中，热量通过强度可调的热源（34）施加到晶片上，并且生产晶片发出宽光谱。在该方法中，使用从测试晶片发射的光的一组红外波长来执行测试沉积过程，以确定包括测试生长层随着时间的温度值的一组测试参数值。然后进行生产沉积过程，并且测量来自晶片的红外光发射的强度，以在测试沉积中使用的相同测试运行的红外波长组上形成一组生产红外光强度值。产生红外光强度值和测试参数值集合用于计算在生产沉积期间用于校正热源强度的误差校正值。

9. 发明授权

US5053757A Touch panel with adaptive noise reduction 失效
标题翻译：具有自适应降噪功能的触摸屏
公开(公告)号：US5053757A
公开(公告)日：1991-10-01
申请号：US455892
申请日：1989-12-27
申请人： Robert D. Meadows
发明人： Robert D. Meadows
IPC分类号： G06F3/033 , G06F3/044
CPC分类号： G06F3/044
摘要： A touch panel has panel scanning signals selectively applied to the four sides of a touch sensing surface of the panel so as to establish alternating current voltage gradients in desired directions across the touch sensing surface. When the panel is touched, touch signals result and are utilized by a touch location circuit in determining the location of touch. The impedance touch current resulting from a user's touch may also be determined and used. The touch panel circuit automatically filters the touch signals to an extent which varies depending upon the rate of movement of touch from one location on the touch sensing surface to a subsequent location. Filtering is decreased with the increasing rates of movement. The touch panel thereby minimizes the effects of noise on touch location determination.
摘要翻译：触摸面板具有选择性地施加到面板的触摸感测表面的四个侧面的面板扫描信号，以便在穿过触摸感测表面的期望方向上建立交流电压梯度。当面板被触摸时，触摸信号的结果被触摸位置电路用于确定触摸的位置。也可以确定和使用由用户触摸产生的阻抗触摸电流。触摸面板电路自动地将触摸信号过滤到根据触摸从触摸感测表面上的一个位置到后续位置的移动速度而变化的程度。过滤随着运动速度的增加而降低。因此，触摸面板使得噪声对触摸位置确定的影响最小化。

10. 发明授权

US4939672A Method and apparatus for classifying graphics segments to facilitate pick and display operation 失效
标题翻译：用于分类图形段以方便拾取和显示操作的方法和装置
公开(公告)号：US4939672A
公开(公告)日：1990-07-03
申请号：US118481
申请日：1987-11-09
申请人： Robert D. Meadows
发明人： Robert D. Meadows
IPC分类号： G06F17/50 , G06F3/033 , G06F3/048 , G06T11/00 , G06T11/80
CPC分类号： G06F3/04842 , G06T11/00
摘要： A display system comprises a data base memory for storing data representing a picture, a display device for displaying the picture, and manipulation means for causing the display device to display a cursor at a position which is under user control. The picture is composed of objects and each object is represented in the data base memory by a segment which represents both the object and the position of the object in the picture. A pointer, which divides the address domain of the display device into at least two regions, is generated. The manipulation means provides a signal which identifies the region of the pictures in which the cursor is positioned, and this signal is compared with the contents of the data base memory to facilitate selection of an object which lies in the identified region of the picture.

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