MATHEMATICAL EXPRESSION DISPLAY CONTROL APPARATUS, MATHEMATICAL EXPRESSION DISPLAY CONTROL METHOD, AND COMPUTER READABLE MEDIUM RECORDING MATHEMATICAL EXPRESSION DISPLAY CONTROL PROGRAM

摘要

A mathematical expression display control apparatus includes a mathematical expression input unit, a mathematical expression display control unit, a cursor display control unit, an inverse number function input unit, an inverse number target detection unit and an inverse number display control unit. The mathematical expression input unit recognizes a mathematical expression. The mathematical expression display control unit displays the recognized mathematical expression on a display unit. The cursor display control unit moves and displays a cursor in the displayed mathematical expression. The inverse number function input unit recognizes an inverse number function. The inverse number target detection unit detects a chunk region of the mathematical expression as a target of the inverse number function. The inverse number display control unit replaces the detected chunk region with a fraction having the detected chunk region as a denominator and 1 as a numerator to display.

主权项

1. A mathematical expression display control apparatus which naturally displays a mathematical expression, comprising:
a mathematical expression input unit that recognizes a mathematical expression based on user's input operations; a mathematical expression display control unit that displays the mathematical expression recognized by the mathematical expression input unit on a display unit; a cursor display control unit that moves and displays a cursor based on a user's operation, with respect to the mathematical expression displayed by the mathematical expression display control unit; an inverse number function input unit that recognizes an inverse number function based on a user's input operation; an inverse number target detection unit that detects a chunk region of the mathematical expression which is a target of the inverse number function in a predetermined direction from a position of the displayed cursor with respect to the mathematical expression, based on the inverse number function recognized by the inverse number function input unit; and an inverse number display control unit that replaces the chunk region of the mathematical expression detected by the inverse number target detection unit with a fraction which has the detected chunk region as a denominator and 1 as a numerator and that displays the replaced fraction.