An information processing device includes a communication unit conducting a videophone call, a memory storing a telephone directory which registers at least each individual telephone number and which is capable of registering a portrait image associated with each individual telephone number, a portrait image registration determination unit determining whether or not a portrait image of a calling party is registered in the telephone directory by referring to the telephone directory based on the telephone number of the calling party when sending and receiving data according to the videophone call, a portrait image capturing unit capturing a portrait image received from the calling party as a calling party portrait image if the portrait image registration determination unit determines that the portrait image of the calling party is not registered in the telephone directory, and a portrait image automatic registration unit registering automatically the portrait image captured in the portrait image capturing unit as the calling party portrait image in the memory.