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1. 发明授权

US4395116A Artwork generation apparatus and process for charts 失效
标题翻译：绘图生成装置和图表的过程
公开(公告)号：US4395116A
公开(公告)日：1983-07-26
申请号：US227215
申请日：1981-01-22
申请人： Charles R. Patton, III , Douglas E. Lippincott
发明人： Charles R. Patton, III , Douglas E. Lippincott
IPC分类号： B41B23/00 , G03B27/32 , G03B41/00
CPC分类号： B41B23/00
摘要： An apparatus and automated process to improve the accuracy and reduce the time, cost, and effort necessary to prepare reproduction artwork for charts is disclosed. A numerically or computer controlled imaging system is used to expose photographic film or emulsion with specially prepared halftone pattern symbols. This allows a computer to be used to select both the symbol and location, instead of slow and costly manual methods. Greatest benefits accrue when the final chart is to be in color. One sheet of film per primary color is exposed using a few basic symbols, which are then combined to yield a wide range of color in the symbols of the final chart. Typically, the final product of this process is one or more sheets of monochromatic film used as masters for a color printing or color key process. Further, a method is described to avoid erroneous density (and resultant color) changes where halftone symbols overlap, as well as various other methods to improve legibility and produceability of the charts.
摘要翻译：公开了一种设备和自动化过程，以提高准确性并减少为图表准备再现艺术作品所需的时间，成本和努力。使用数字或计算机控制的成像系统来曝光具有特别制备的半色调图案符号的照相胶片或乳液。这允许使用计算机来选择符号和位置，而不是缓慢而昂贵的手动方法。最终的图表是彩色时最大的收益。使用几个基本符号来暴露每张原色的一片胶片，然后将其组合在最终图表的符号中产生宽范围的颜色。通常，该方法的最终产品是用作彩色打印或色键处理的主体的一张或多张单色膜。此外，描述了一种方法，以避免半色调符号重叠的错误密度（和所得到的颜色）变化，以及提高图表的易读性和可生产性的各种其他方法。

2. 发明授权

US5179368A Method and apparatus for interfacing computer light pens 失效
标题翻译：用于连接计算机光笔的方法和装置
公开(公告)号：US5179368A
公开(公告)日：1993-01-12
申请号：US434072
申请日：1989-11-09
申请人： Douglas E. Lippincott
发明人： Douglas E. Lippincott
IPC分类号： G06F3/033
CPC分类号： G06F3/03542
摘要： A method and apparatus to improve the accuracy and responsiveness of computer light pens, while simultaneously reducing the associated computing overhead, is disclosed. A light pen is a device that generates an electrical signal when touched to an illuminated section of a computer screen. The position of the pen on the screen can be determined by timing relationships between the signal from the pen and the synchronizing signals being sent to the screen by its controller. The interface apparatus utilizes a pair of synchronous digital counters, one for each axis, to accumulate the timing information. A special processing method is used for the data that is read from the counters to substantially reduce the false horizontal movement normally associated with light pens. The special processing eliminates the need for frame-to-frame averaging, resulting in greatly improved responsiveness. The improved interface method and apparatus utilize a combination of hardware and software interrupts to reduce computational overhead.
摘要翻译：公开了一种提高计算机光笔的精度和响应性同时降低相关计算开销的方法和装置。光笔是当触摸计算机屏幕的照明部分时产生电信号的装置。笔在屏幕上的位置可以通过来自笔的信号与通过其控制器发送到屏幕的同步信号之间的定时关系来确定。接口装置利用一对同步数字计数器，每个轴一个，以累积定时信息。对于从计数器读取的数据，使用特殊的处理方式来大幅度地减少通常与光笔相关联的假水平移动。特殊处理消除了对帧间平均的需要，从而大大提高了响应速度。改进的接口方法和装置利用硬件和软件中断的组合来减少计算开销。

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