Coordinate input apparatus, control method therefor, and computer-readable memory
First Claim
1. A coordinate input apparatus which detects three-dimensional position coordinates of an indicating tool used in combination with a display for displaying a window based on two-dimensional coordinates, comprising:
- storage means for storing a plurality of a set of coordinate values of a plurality of points for defining each of a plurality kinds of a three-dimensional space area which is positioned at a relative coordinate position against a position of the display;
coordinate detection means for detecting a three-dimensional absolute coordinate value of the indicating tool in a three-dimensional space area;
determination means for determining which three-dimensional space area defined by each of the plurality of the set of coordinate values stored in said storage means the detected three-dimensional absolute coordinate value belongs to; and
conversion means for converting, responsive to a determination of said determination means that said three-dimensional absolute coordinate value belongs to said three-dimensional space area, a position of said three-dimensional absolute coordinate value in the three-dimensional space area into a display coordinate value of said display.
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Accused Products
Abstract
An arithmetic control circuit stores a set of coordinate values of a plurality of points for defining a coordinate input area in an arbitrary space in advance, and determines whether a three-dimensional coordinate value as the position coordinates of the indicating tool belongs to the coordinate input area defined by the stored set of coordinate values. The three-dimensional coordinates of the indicating tool are then converted into a two-dimensional coordinate value corresponding to a display window on the basis of the determination result obtained by a determination unit.
55 Citations
11 Claims
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1. A coordinate input apparatus which detects three-dimensional position coordinates of an indicating tool used in combination with a display for displaying a window based on two-dimensional coordinates, comprising:
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storage means for storing a plurality of a set of coordinate values of a plurality of points for defining each of a plurality kinds of a three-dimensional space area which is positioned at a relative coordinate position against a position of the display; coordinate detection means for detecting a three-dimensional absolute coordinate value of the indicating tool in a three-dimensional space area; determination means for determining which three-dimensional space area defined by each of the plurality of the set of coordinate values stored in said storage means the detected three-dimensional absolute coordinate value belongs to; and conversion means for converting, responsive to a determination of said determination means that said three-dimensional absolute coordinate value belongs to said three-dimensional space area, a position of said three-dimensional absolute coordinate value in the three-dimensional space area into a display coordinate value of said display. - View Dependent Claims (2, 3, 4, 10)
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5. A control method for a coordinate input apparatus which detects three-dimensional position coordinates of an indicating tool used in combination with a display for displaying a window based on two-dimensional coordinates, comprising:
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a storage step of storing, in a storage medium, a plurality of a set of coordinate values of a plurality of points for defining each of a plurality kinds of a three-dimensional space area which is positioned at a relative coordinate position against a position of the display; a coordinate detection step of detecting a three-dimensional absolute coordinate value of the indicating tool in a three-dimensional space area; a determination step of determining which three-dimensional space area defined by each of the plurality of the set of coordinate values stored in the storage medium the detected three-dimensional absolute coordinate value belongs to; and a conversion step of converting, responsive to a determination of said determination step that said three-dimensional absolute value belongs to said three-dimensional space area, a position of said three-dimensional absolute coordinate value in the determined three-dimensional space area into a display coordinate value of said display. - View Dependent Claims (6, 7, 8, 11)
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9. A computer-readable memory storing a program code for controlling a coordinate input apparatus which detects three-dimensional position coordinates of an indicating tool used in combination with a display for displaying a window based on two-dimensional coordinates, wherein the program code includes:
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a program code for a storage step of storing, in a storage medium, a plurality of a set of coordinate values of a plurality of points for defining each of a plurality kinds of a three-dimensional space area which is positioned at a relative coordinate position against a position of the display; a program code for a coordinate detection step of detecting a three-dimensional absolute coordinate value of the indicating tool in a three-dimensional space area; a program code for a determination step of determining which three-dimensional space area defined by each of the plurality the set of coordinate values stored in the storage medium the detected three-dimensional absolute coordinate value belongs to; and a program code for a conversion step of converting, responsive to a determination of said determination step that said three-dimensional absolute value belongs to said three-dimensional space area, a position of said three-dimensional absolute coordinate value in the determined three-dimensional space area into a display coordinate value of said display.
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Specification