Writing apparatus

Abstract

A writing apparatus includes: a voltage application unit that applies a voltage to a display medium whose display changes according to an irradiation of light and an applied voltage; an optical output unit that irradiates light toward the display medium; and a controller that (i) receives a position signal that has been output from an apparatus upon contact with an input device, the position signal indicating a position of the contact with the input device, (ii) specifies, based on the received position signal, a position on the display medium at which a display is to be changed, and (iii) controls the optical output unit so that light is irradiated toward the specified position on the display medium for a predetermined time period.

Dependencies are inferred from the claim text.