System and method for recognizing user's emotional state using short-time monitoring of physiological signals

An emotion recognition system, comprising:

• a physiological signal acquiring unit wearable by a user in the form of a wrist watch, acquires one or more physiological signals from a user
• and wirelessly transmit the acquired physiological signals
• and an emotion recognition unit receives the physiological signals transmitted from the physiological signal acquiring unit and monitor them for a time period to perceive an emotional state of the user,
• wherein the emotion recognition unit comprises:
• a feature analyzer analyzes features of the physiological signals and generate feature values corresponding to the results of the analysis;
• a subtractor obtains differences between the feature values of the results generated by the feature analyzer and feature values used as a standard to perceive an emotional state of the user;
• and
• an emotion classifier analyzes the differences obtained by the subtractor to classify an emotion into a plurality of emotional categories to perceive an emotional category exhibiting the greatest intensity to be an emotional state of the user.