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1. 发明授权

US5633681A Electrically controlled camera positioning system 失效
标题翻译：电子摄像机定位系统
公开(公告)号：US5633681A
公开(公告)日：1997-05-27
申请号：US398546
申请日：1995-03-06
申请人： Larry K. Baxter , Daniel R. Phelps , Anthony M. Duys , Frank Labuski
发明人： Larry K. Baxter , Daniel R. Phelps , Anthony M. Duys , Frank Labuski
IPC分类号： G03B15/00 , F16M11/12 , G01D5/241 , H04N5/225 , H04N5/232 , H04N7/14
CPC分类号： G01D5/2412 , H04N5/2251 , H04N5/232 , H04N7/142
摘要： A camera positioning system for rotating a video camera about a rotation axis. The system includes a camera platform to which the camera is rotatably attached; a motor mounted to a base for driving the camera platform to effect rotation of the platform about the axis and relative to the base; a drive for coupling the motor to the camera platform; an electrically driven capacitive sensor assembly for generating electrical position signals for determining a rotational position of the camera platform relative to the base; and a feedback control circuit for using the position signals from the capacitive sensor assembly to control rotational positioning of the motor, resulting in rotating the camera to a desired camera position. The capacitive sensor has a conductive guard plate which helps immunize the capacitive sensor assembly from noise and from ground potentials. The rotation axis can be horizontal or vertical with the camera rotated to effect pan or tilt respectively.
摘要翻译：摄像机定位系统，用于围绕旋转轴旋转摄像机。该系统包括相机可旋转地附接到的相机平台; 安装到基座的电动机，用于驱动相机平台以实现平台绕轴线和相对于基座的旋转; 用于将马达耦合到相机平台的驱动器; 用于产生用于确定相机平台相对于基座的旋转位置的电位置信号的电驱动电容式传感器组件; 以及反馈控制电路，用于使用来自电容传感器组件的位置信号来控制电动机的旋转定位，导致相机旋转到期望的照相机位置。电容传感器具有导电防护板，其有助于免受电容传感器组件的噪声和地电位的影响。旋转轴可以水平或垂直，相机旋转分别实现平移或倾斜。

2. 发明授权

US07471320B2 Electronic pan tilt zoom video camera with adaptive edge sharpening filter 有权
标题翻译：具有自适应边缘锐化滤波器的电子摇摄变焦摄像机
公开(公告)号：US07471320B2
公开(公告)日：2008-12-30
申请号：US10425535
申请日：2003-04-29
申请人： Kenneth W. Malkin , Larry K. Baxter , Steven C. Taetzsch , Daniel R. Phelps
发明人： Kenneth W. Malkin , Larry K. Baxter , Steven C. Taetzsch , Daniel R. Phelps
IPC分类号： H04N5/208
CPC分类号： H04N5/208
摘要： An apparatus and a method is provided for enhancing a digital image comprised of pixels by adaptively sharpening the pixels and clipping the numerical values of the sharpened edge pixels so as to fall between the smallest unsharpened numerical value and the greatest unsharpened numerical value, respectively, of the pixels located within a neighborhood of the pixels. Pixels which are located on an edge are sharpened in the direction perpendicular to the edge. The threshold value used to ascertain the presence of an edge and sharpening parameter used to control the degree of sharpening can be adaptively controlled by the zoom ratio. The apparatus of the invention is particularly suited for an electronic set-top video camera.
摘要翻译：提供了一种装置和方法，用于通过自适应地锐化像素并削减锐化的边缘像素的数值，以分别落在最小的未钝化数值和最大未钝化数值之间来增强包括像素的数字图像位于像素附近的像素。位于边缘上的像素在与边缘垂直的方向上被锐化。用于确定用于控制锐化程度的边缘的存在和锐化参数的阈值可以由缩放倍率自适应地控制。本发明的装置特别适用于电子机顶视频摄像机。

3. 发明授权

US06614474B1 Electronic pan tilt zoom video camera with adaptive edge sharpening filter 有权
公开(公告)号：US06614474B1
公开(公告)日：2003-09-02
申请号：US09141057
申请日：1998-08-27
申请人： Kenneth W. Malkin , Larry K. Baxter , Steven C. Taetzsch , Daniel R. Phelps
发明人： Kenneth W. Malkin , Larry K. Baxter , Steven C. Taetzsch , Daniel R. Phelps
IPC分类号： H04N5208
CPC分类号： H04N5/208
摘要： An apparatus and a method is provided for enhancing a digital image comprised of pixels by adaptively sharpening the pixels and clipping the numerical values of the sharpened edge pixels so as to fall between the smallest unsharpened numerical value and the greatest unsharpened numerical value, respectively, of the pixels located within a neighborhood of the pixels. Pixels which are located on an edge are sharpened in the direction perpendicular to the edge. The threshold value used to ascertain the presence of an edge and sharpening parameter used to control the degree of sharpening can be adaptively controlled by the zoom ratio. The apparatus of the invention is particularly suited for an electronic set-top video camera.

4. 发明授权

US5471043A Electro-optic barcode reader 失效
标题翻译：电光条码阅读器
公开(公告)号：US5471043A
公开(公告)日：1995-11-28
申请号：US228514
申请日：1994-04-15
申请人： Herbert C. Knapp , Vance A. Parker , Larry K. Baxter , Jon F. Evans
发明人： Herbert C. Knapp , Vance A. Parker , Larry K. Baxter , Jon F. Evans
IPC分类号： G06K7/10
CPC分类号： G06K7/10851 , G06K7/10762
摘要： An optical assembly and electronic reader circuit cooperate to provide a highly-efficient and low-cost electro-optic barcode reader. The optical assembly includes a shielded housing, a photo detector and optical elements disposed about an un-folded optical path that provide a virtual reading window at one end of the housing whose field of view, which is focused to a point at the photo detector, is shaped to be no wider than constitutive barcode indicia. The electronic reader circuit includes a pulse amplifier and manual-adjustment-free average D.C. offset negative feedback and A.C. information peak detect negative feedback loops that respectively maintain the electrical pulse stream input to the pulse amplifier within the dynamic range thereof and eliminate electrical pulse stream peak noise. A circuit is coupled to a comparator with hysteresis square-up stage to deactivate the comparator in the state of no input signal.
摘要翻译：光学组件和电子读取器电路协作提供高效率和低成本的电光条形码读取器。光学组件包括屏蔽壳体，光电检测器和围绕未折叠光路布置的光学元件，该光学元件在壳体的一端处提供虚拟读取窗口，其视场聚焦到光电检测器处的点，形状不比本构条形码标记宽。电子读取器电路包括脉冲放大器和无手动调节的平均DC偏移负反馈和AC信息峰值检测负反馈回路，其分别保持在其动态范围内输入到脉冲放大器的电脉冲流，并消除电脉冲流峰值噪声。电路耦合到具有滞后平方的级比较器，以在无输入信号的状态下去激活比较器。

5. 发明授权

US5326963A Electro-optic barcode reader 失效
标题翻译：电光条码阅读器
公开(公告)号：US5326963A
公开(公告)日：1994-07-05
申请号：US956726
申请日：1992-10-02
申请人： Herbert C. Knapp , Vance A. Parker , Larry K. Baxter , Jon F. Evans
发明人： Herbert C. Knapp , Vance A. Parker , Larry K. Baxter , Jon F. Evans
IPC分类号： G06K7/10
CPC分类号： G06K7/10851 , G06K7/10762
摘要： An optical assembly and electronic reader circuit cooperate to provide a highly-efficient and low-cost electro-optic barcode reader. The optical assembly includes a shielded housing, a photo detector and optical elements disposed about an un-folded optical path that provide a virtual reading window at one end of the housing whose field of view, which is focused to a point at the photo detector, is shaped to be no wider than constitutive barcode indicia. The electronic reader circuit includes a pulse amplifier and manual-adjustment-free average D.C. offset negative feedback and A.C. information peak detect negative feedback loops that respectively maintain the electrical pulse stream input to the pulse amplifier within the dynamic range thereof and eliminate electrical pulse stream peak noise. A circuit is coupled to a comparator with hysteresis square-up stage to deactivate the comparator in the state of no input signal.
摘要翻译：光学组件和电子读取器电路协作提供高效率和低成本的电光条形码读取器。光学组件包括屏蔽壳体，光电检测器和围绕未折叠光路布置的光学元件，该光学元件在壳体的一端处提供虚拟读取窗口，其视场聚焦到光电检测器处的点，形状不比本构条形码标记宽。电子读取器电路包括脉冲放大器和无手动调节的平均DC偏移负反馈和AC信息峰值检测负反馈回路，其分别保持在其动态范围内输入到脉冲放大器的电脉冲流，并消除电脉冲流峰值噪声。电路耦合到具有滞后平方的级比较器，以在无输入信号的状态下去激活比较器。

6. 发明授权

US5486853A Electrical cable interface for electronic camera 失效
标题翻译：电子摄像机电缆接口
公开(公告)号：US5486853A
公开(公告)日：1996-01-23
申请号：US355036
申请日：1994-12-13
申请人： Larry K. Baxter , John J. Coffey
发明人： Larry K. Baxter , John J. Coffey
IPC分类号： H04N5/232 , H04N5/228
CPC分类号： H04N5/23203
摘要： The invention features a video camera system where horizontal and vertical synchronizing signals and a pixel clock signal are generated and added to analog video signals from a video imaging device within an electronic camera head that is connected, via an electrical cable, to a remote host processor having digital signal processing circuitry for processing the video signals. The analog video signals generated by the video imaging device received by the host processor, over the electrical cable, are converted to digital video signals at the remote host, and are then processed by the digital signal processing circuitry.
摘要翻译：本发明的特征在于一种视频摄像机系统，其中生成水平和垂直同步信号和像素时钟信号，并将其附加到电子照相机头内的视频成像装置的模拟视频信号，电子照相机头通过电缆连接到远程主机处理器具有用于处理视频信号的数字信号处理电路。由主处理器通过电缆接收的由视频成像设备产生的模拟视频信号在远程主机处转换成数字视频信号，然后被数字信号处理电路处理。

7. 发明授权

US4586260A Capacitive displacement measuring instrument 失效
标题翻译：电容位移测量仪
公开(公告)号：US4586260A
公开(公告)日：1986-05-06
申请号：US614818
申请日：1984-05-29
申请人： Larry K. Baxter , Robert J. Buehler
发明人： Larry K. Baxter , Robert J. Buehler
IPC分类号： G01B3/20 , G01B7/02
CPC分类号： G01B3/205
摘要： A scale and slider in a linear displacement measuring instrument have spaced opposed parallel surfaces bearing aligned patterns of thin flat conductive elements. The scale pattern consists of equally spaced parallel bars transverse to displacement with enlarged aligned central portions which form collectively a single set of coupling electrodes. A pair of aligned sensor electrodes are fixed on the surface of the slider opposite the coupling electrodes of the scale and matching arrays of transmitter elements are arranged on opposite sides of the sensor electrodes and grouped axially in space quadrature. Alternate interdigitated sets of the transmitter electrodes on the slider are excited with oppositely phased square wave signals. The signals picked up by the sensor electrodes on the slider are fed to separate coarse plate counting and fine plate interpolation circuits. In the fine count circuit, the displacement-dependent amplitude of the signals from first one and then the other of the sensor electrodes is amplitude demodulated and digitally converted by a dual slope integrator. The reference signal for the return slope is furnished by placing cophase signals on the transmitter electrodes. Battery life is prolonged by staged power down modes which remove bias voltages from selected analog components while retaining limit values.
摘要翻译：线性位移测量仪器中的刻度尺和滑块具有间隔开的相对的平行表面，其具有对准的薄平坦导电元件的图案。刻度图形由横向于位移的等间距平行条组成，放大的对准的中心部分共同形成一组耦合电极。一对对准的传感器电极固定在与标尺的耦合电极相对的滑块的表面上，并且发射器元件的匹配阵列布置在传感器电极的相对侧上并且在空间正交中轴向分组。滑块上的发射器电极的交替的交错组被相反相位方波信号激发。由滑块上的传感器电极拾取的信号被馈送以分离粗板计数和精细板插补电路。在精细计数电路中，来自第一个传感器电极和另一个传感器电极的信号的位移相关幅度由双斜率积分器进行幅度解调和数字转换。通过在发射器电极上放置同相信号来提供返回斜率的参考信号。通过分级掉电模式延长电池寿命，从而在保留极限值的同时清除所选模拟组件的偏置电压。

8. 发明授权

US07129714B2 Capacitive measurement system 失效
标题翻译：电容测量系统
公开(公告)号：US07129714B2
公开(公告)日：2006-10-31
申请号：US10994536
申请日：2004-11-22
申请人： Larry K. Baxter
发明人： Larry K. Baxter
IPC分类号： G01R27/26
CPC分类号： G01D5/24
摘要： Sensor circuits for the measurement of small variations in the value of a sensing capacitor. An alternating voltage excites the sensing capacitor a predetermined frequency whereby the voltage on the sensing capacitor reverses polarity. This voltage on the sensing capacitor is sampled each time the voltage reverses polarity. An accumulator accumulates the sampled charges from the sensing capacitor. An output signal that represents the charge in the charge accumulating means indicates the measured capacitance.
摘要翻译：传感器电路用于测量感测电容器值的小变化。交流电压将感测电容器激励预定频率，由此感测电容器上的电压反转极性。每次电压反转极性时，感测电容器上的电压都会被采样。累加器从感测电容器累加采样的电荷。表示电荷累积装置中的电荷的输出信号表示测量的电容。

9. 发明授权

US06704048B1 Adaptive electronic zoom control 失效
标题翻译：自适应电子变焦控制
公开(公告)号：US06704048B1
公开(公告)日：2004-03-09
申请号：US09140941
申请日：1998-08-27
申请人： Kenneth W. Malkin , Larry K. Baxter
发明人： Kenneth W. Malkin , Larry K. Baxter
IPC分类号： G09G500
CPC分类号： G06T3/40 , H04N5/3454 , H04N7/142
摘要： An adaptive electronic zoom system is described which includes an electronic camera having an image sensor with pixels, a controller communicating with an address generator to select in response to an external input or feedback signals from the electronic camera a subset of pixels from the pixels of the image sensor, the subset of pixels defining a zoom area. The zoom area can be located at any position within the image sensor area. The zoom ratio/pan/tilt of the zoom area is automatically adjusted so as to maintain the location of the zoom area entirely within the image sensor area. The adaptive electronic zoom system is particularly suited for set-top boxes for video conferencing applications.
摘要翻译：描述了一种自适应电子变焦系统，其包括具有带有像素的图像传感器的电子照相机，与地址发生器通信的控制器，以响应于外部输入或来自电子照相机的反馈信号来选择来自所述像素的像素的子集图像传感器，定义缩放区域的像素子集。变焦区域可以位于图像传感器区域内的任何位置。自动调整变焦区域的变焦比/平移/俯仰，以便将变焦区域的位置完全保持在图像传感器区域内。自适应电子变焦系统特别适用于视频会议应用的机顶盒。

10. 发明授权

US4270043A Methods of and apparatus for time clock recording and computation and related uses 失效
标题翻译：时间记录和计算及相关用途的方法和装置
公开(公告)号：US4270043A
公开(公告)日：1981-05-26
申请号：US20223
申请日：1979-03-13
申请人： Larry K. Baxter , Robert D. Cohen , Mark S. Ain , Sheldon P. Apsell
发明人： Larry K. Baxter , Robert D. Cohen , Mark S. Ain , Sheldon P. Apsell
IPC分类号： G07C1/00 , G06K7/016 , G07C1/10 , G07C1/14 , G07C1/16 , G07C1/18 , G06C15/00 , G06F3/08 , G06F15/12 , G06K7/10
CPC分类号： G07C1/16 , G07C1/14
摘要： This disclosure is concerned with time-clock recording and computation that, through a novel clock track card and separate clock track and data channel optical reading, in cooperation with microprocessor calculation, storage and control, enables automating employee time and attendance and similar data in a format directly recordable on the card and also directly useable by payroll or other processing computers and the like.
摘要翻译：本公开涉及时钟记录和计算，通过新颖的时钟轨迹卡和单独的时钟轨道和数据通道光学读取，与微处理器计算，存储和控制协作，使得能够自动化员工的时间和考勤以及类似的数据格式可直接记录在卡上，也可直接用于工资单或其他处理计算机等。

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