Importance

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Abstract

There is provided a means for allowing a computer to process modifications of entered contents such as deleting, adding, replacing, and emphasizing entered characters by maintaining the same work feeling as for ordinary writing using paper and a pen as much as possible when a tablet or an electronic pen is used as an entry means. For this purpose, a user can use such symbols used for ordinary writing as a double-line or fill signifying deletion, a caret, inverted caret, or arrow signifying addition, and a surrounding line or underline signifying emphasis. These symbols are associated with control commands to specify the beginning of these modification processes and characters to be modified. These commands are automatically detected from handwriting information to automatically execute the corresponding process. The detection of characters to be modified uses character extraction information generated from the character recognition technique. When a control symbol such as the double-line or the surrounding line is written, the process finds a degree of overlapping between the character extraction information and the control symbol and uses a result for determination of characters to be modified, thus providing high-precision detection.

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First Claim