Patent ID: 8619045
Filing Date: 2013-12-31
Classification: G06F,G06K

Abstract:
1. A calculator comprising: a display unit having a touch panel; a recognition unit configured to (i) recognize a numerical expression which is handwritten on the touch panel, (ii) convert the handwritten numerical expression in a text format, and (iii) display the text-converted numerical expression on the display unit; an automatic input unit configured to, if the recognition unit recognizes the handwritten numerical expression as a certain function, add an item for the certain function into the handwritten numerical expression and the text-converted numerical expression; and an erasing unit configured to, if a part of the text-converted numerical expression is erroneously recognized and the erroneously-recognized part is specified, erase the erroneously-recognized part and a part of the handwritten numerical expression corresponding to the erroneously recognized part, wherein if information is handwritten again in the erased part of the handwritten numerical expression, the recognition unit recognizes the handwritten information again, and then the erroneously-recognized part of the text-converted numerical expression is corrected.