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    • 6. 发明授权
    • Method for correction of position location indicator for a large area
display system
    • 大面积显示系统位置指示器校正方法
    • US5341155A
    • 1994-08-23
    • US864271
    • 1992-04-06
    • Scott A. ElrodBrent B. WelchDavid Goldberg
    • Scott A. ElrodBrent B. WelchDavid Goldberg
    • G06F3/041G06F3/038G06F3/042G09G3/02G09G3/20
    • G06F3/0425G06F3/0386
    • In a large area display system, multiple persons may work together with multiple input devices for supplying and receiving information in an interactive system with a single large area display. The large area display system comprises a screen wherein computer generated information is projected upon one side of the screen, and users interact with the computer from the opposite side of the the screen. Data coordinates for an input device corresponding to a pseudo image sensed by the receiving subsystem electronics are provided to the controlling computer. The input data coordinates from the pseudo image are normalized for variations due to frequency dependence and electronic drift. The normalized data coordinates are looked up in a calibration table to account for distortion in the pseudo image detection electronics. Screen coordinates corresponding to pixel locations on the large area screen are found by interpolation from the data From the calibration table. The calibration table is prepared off-line, based on a bicubic spline interpolating function which is then compressed using a delta compression scheme. During on-line operation of the system, screen coordinates are looked-up directly from the compressed table. The screen coordinates are then jitter smoothed to provide a smooth path of response closely conforming to original input locations. The jitter smoothing method uses an exponential function based on the magnitude of the change in the position of the input.
    • 在大面积显示系统中,多个人可以与多个输入设备一起工作,用于在具有单个大面积显示的交互系统中提供和接收信息。 大面积显示系统包括其中计算机生成的信息被投影在屏幕的一侧的屏幕,并且用户从屏幕的相对侧与计算机进行交互。 将与由接收子系统电子装置感测到的伪图像对应的输入装置的数据坐标提供给控制计算机。 由于频率依赖和电子漂移,来自伪图像的输入数据坐标被归一化以用于变化。 在校准表中查找归一化的数据坐标以解决伪图像检测电子设备中的失真。 通过从校准表中的数据进行插值,找出与大区域屏幕上的像素位置对应的屏幕坐标。 校准表基于双三次样条插值函数离线准备,然后使用增量压缩方案进行压缩。 在系统的在线操作期间,直接从压缩表查找屏幕坐标。 然后屏幕坐标被抖动平滑以提供与原始输入位置紧密相符的平滑响应路径。 抖动平滑方法使用基于输入位置变化幅度的指数函数。
    • 10. 发明申请
    • AIR FLOW CONTROL BLIND
    • US20230013249A1
    • 2023-01-19
    • US17378515
    • 2021-07-16
    • Scott A. Elrod
    • Scott A. Elrod
    • A01M31/02E04H15/16E04H15/00F24F7/003
    • Embodiments disclosed herein relate to air flow control blinds or tents useful for controlling scents emitted therefrom. The air flow control blinds include one or more walls, a roof, windows in the one or more walls, and at least one directional vent disposed on the one or more walls, where the at least one directional vent includes an inlet on the inner surface of the blind and an outlet fluidly connected to the inlet, the outlet facing downward on the outer surface of the blind to direct fluids flowing therethrough towards the ground. The air flow control blinds may include one or more roof vents adjacent to the one or more walls on the roof to remove air from an interior of the blind therethrough. The air flow control blind includes at least one oxidant generator mount on one or more of the roof or the one or more walls to mount an oxidant generator thereon. Blind systems include a portable oxidant generator positioned in the blind. The blinds and blind systems are used to control scents therein or therearound.