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Īround 1954 Douglas T Ross, working on the Whirlwind computer at MIT, wrote the "first hand-drawn graphics input program to a computer". What is probably the first patent for a system that recognized handwritten characters by analyzing the handwriting motion was granted in 1915. Pen computing has very deep historical roots.įor example, the first patent for an electronic device used for handwriting, the telautograph, was granted in 1888. Prior systems which employed gesture recognition only did so within special applications, such as CAD/CAM applications or text processing. The PenPoint OS was a special operating system which incorporated gesture recognition and handwriting input at all levels of the operating system. Recent systems have used digitizers which can recognize more than one "stylus" (usually a finger) at a time, and make use of Multi-touch gestures. With Apple's Newton OS, text could be deleted by scratching in a zig-zag pattern over it. Depending on the implementation, what is deleted might be the object or text where the mark was made, or the stylus can be used as a pointing device to select what it is that should be deleted. This is the technique of recognizing certain special shapes not as handwriting input, but as an indicator of a special command.įor example, a "pig-tail" shape (used often as a proofreader's mark) would indicate a "delete" operation. Freestyle worked entirely by direct manipulation, with the addition of electronic "ink" for adding handwritten notes. The Wang Freestyle system is one example. The stylus is used to touch, press, and drag on simulated objects directly. The term "on-line handwriting recognition" is used to distinguish recognition of handwriting using a real-time digitizing tablet for input, as contrasted to "off-line handwriting recognition", which is optical character recognition of static handwritten symbols from paper. by context, such as treating any marks not recognized as text as pointing input.by pressing a special button on the side of the stylus to change modes.by writing in separate areas of the tablet for pointing mode and for handwriting-recognition mode.handwriting recognition) by different means, e.g. The characters are then input as text, as if from a keyboard.ĭifferent systems switch between the modes (pointing vs.
E PENS MOBILE NOTES PRO 2 SOFTWARE
On-line Handwriting recognition mode: The strokes made with the stylus are analyzed as an "electronic ink" by software which recognizes the shapes of the strokes or marks as handwritten characters.
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