EARPHONE, PORTABLE TERMINAL, ELECTRONIC SYSTEM, AND CONTROL METHOD OF ELECTRONIC SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide an earphone that can be switched between closed-type and open type, depending on the situation of a user.SOLUTION: A state management unit 591 acquires or detects the information about the physical conditions of the user of a portable terminal, or the environment where the user is located. An earphone control unit 592 switches an earphone 51 to closed-type or open type, on the basis of the physical conditions of the user or the environment where the user is located.SELECTED DRAWING: Figure 2