The invention enables estimation of a real-time emotional state of an input worker using an electronic pen at the time of input work so as to permit processing corresponding to the estimated emotional state.There are provided a position detection apparatus part that includes a sensor for detecting the position pointed by the electronic pen and means acquiring pen state information regarding the electronic pen held by a user; a transmission part that transmits to an emotion estimation apparatus an emotional state estimation request including the pen state information acquired by the position detection apparatus part, the emotion estimation apparatus including a database that stores an emotional state of a person holding the electronic pen and range information regarding a range of values that may be taken by the pen state information regarding the electronic pen held by the person at the time of being in the emotional state, the emotional state and the range information being associated with one another; and a processing part that receives information corresponding to the emotional state transmitted from the emotion estimation apparatus in response to the pen state information included in the transmitted emotional state estimation re-quest, the processing part further performing processing using the received information corresponding to the emotional state.
COORDINATE INPUT PROCESSING DEVICE, EMOTION ESTIMATION DEVICE, EMOTION ESTIMATION SYSTEM, AND DEVICE FOR CONSTRUCTING DATABASE FOR EMOTION ESTIMATION