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Apparatus and method for reducing system overhead while inking strokes in a finger or stylus-based input device of a data processing system
Apparatus and method for reducing system overhead while inking strokes in a finger or stylus-based input device of a data processing system
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机译:用于减少在数据处理系统的手指或基于手写笔的输入设备中进行笔画时系统开销的设备和方法
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摘要
The present invention reduces overhead processing of a data processing system by storing a predetermined number of points corresponding to the position of a pointing device as it moves on a workpad or other touch sensitive input device. A predetermined number of points are stored in a buffer, wherein the predetermined number is dependent upon the type of pointing device (e.g., finger, stylus, etc.) used with the workpad. The stored points are periodically displayed or inked on a visual display at a rate of at least 20 times per second. As a result, the user moving the pointing device receives both tactile and visual feedback information similar to that provided by a pencil used to make markings on a piece of paper. An alternative embodiment provides a similar reduction of overhead associated with erasing graphical information displayed on the visual display.
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