Electronic apparatus and drawing method

#This application is based upon and claims the benefit of priority from Japanese Patent Application No. 2012-240991, filed Oct. 31, 2012, the entire contents of which are incorporated herein by reference.

#Embodiments described herein relate generally to stylus input on a screen.

#Digitizers which use inductive styluses are widely used. The current positional correction (calibration) method is performed by displaying + marks in the four corners of the display screen of the LCD, and requiring the user to tap the center of each + mark. In using the above method, the user often holds the stylus so that it is as perpendicular as possible to the display screen, to accurately put the tip of the stylus on the + mark, and performs operation from immediately above.

#A general architecture that implements the various features of the embodiments will now be described with reference to the drawings. The drawings and the associated descriptions are provided to illustrate the embodiments and not to limit the scope of the invention.

#FIG. 1 is a perspective view of an external appearance of an electronic apparatus according to an embodiment.

#FIG. 2 is an exemplary block diagram illustrating a system configuration of the electronic apparatus of the embodiment.

#Various embodiments will be described hereinafter with reference to the accompanying drawings.

#In general, according to one embodiment, an electronic apparatus comprises a display, a corrector, and a drawing module. The display is configure to be able to detect a position of a first contact in which an area of contact with an object is equal to or smaller than a first threshold value, and a position of a second contact in which an area of contact with an object is equal to or larger than a second threshold value, the second threshold value being equal to or larger than the first threshold value. The corrector is configured to correct the position in which the first contact is sensed. The drawing module is configured to draw at least one of a locus of a position corrected by the correction module, and a locus of the position of the first contact. The corrector is configured to correct the position in which the first contact is sensed, by using at least one of whether the second contact is sensed, and a positional relationship between the first contact and the second contact.

#FIG. 1 is a perspective view of an external appearance of a tablet computer 10 according to an embodiment. The tablet computer 10 is a portable electronic apparatus which is called tablet or slate computer, and comprises a main body 11 and a touchscreen display 17, as illustrated in FIG. 1. The touchscreen display 17 is attached to the main body 11 such that the touchscreen display 17 is superposed on an upper surface of the main body 11.