COORDINATE DETECTION SYSTEM, INFORMATION PROCESSING APPARATUS, AND RECORDING MEDIUM
First Claim
1. A coordinate detection system which detects coordinates of a position to which an electronic pen points on a surface of a display, comprising:
- a plurality of detecting elements configured to detect light emitted from each of light emission points of the electronic pen; and
a coordinate detection unit configured to detect the coordinates of the position to which the electronic pen points based on a distance relationship between first images of the light emission points in an image formed by the light detected by each of the plurality of detecting elements and second images of the light emission points formed by reflection of the first images on the surface of the display.
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Accused Products
Abstract
A coordinate detection system detects coordinates of a position to which an electronic pen points on a surface of a display. The coordinate detection system includes a plurality of detecting elements configured to detect light emitted from each of light emission points of the electronic pen, and a coordinate detection unit configured to detect the coordinates of the position to which the electronic pen points based on a distance relationship between first images of the light emission points in an image formed by the light detected by each of the plurality of detecting elements and second images of the light emission points formed by reflection of the first images on the surface of the display.
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Citations
13 Claims
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1. A coordinate detection system which detects coordinates of a position to which an electronic pen points on a surface of a display, comprising:
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a plurality of detecting elements configured to detect light emitted from each of light emission points of the electronic pen; and a coordinate detection unit configured to detect the coordinates of the position to which the electronic pen points based on a distance relationship between first images of the light emission points in an image formed by the light detected by each of the plurality of detecting elements and second images of the light emission points formed by reflection of the first images on the surface of the display. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An information processing apparatus which detects coordinates of a position to which an electronic pen points on a surface of a display, comprising:
a coordinate detection unit configured to detect the coordinates of the position to which the electronic pen points based on a distance relationship between first images of light emission points of the electronic pen in an image formed by light detected by each of a plurality of detecting elements and second images of the light emission points formed by reflection of the first images on the surface of the display. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A non-transitory computer readable recording medium storing computer readable code that, when executed by a processor of an information processing apparatus which detects coordinates of a position to which an electronic pen points on a surface of a display, configures the processor to perform a coordinate detection method comprising:
detecting the coordinates of the position to which the electronic pen points based on a distance relationship between first images of light emission points of the electronic pen in an image formed by light detected by each of a plurality of detecting elements and second images of the light emission points formed by reflection of the first images on the surface of the display.
Specification