Patent ID: 7162295

Claim:
An apparatus for recognizing positive/negative intention using a fine change of gamma wave of a brainwave, comprising: a brainwave detecting portion for detecting the brainwave from a head of a user; a brainwave amplifying portion for amplifying the brainwave detected from the brainwave detecting portion; an A/D converting portion for converting the amplified brainwave received from the brainwave amplifying portion to one of a digital type; and a recognizer for recognizing the positive/negative intention of the user by detecting the fine change of the gamma wave of the brainwave in the digital type, which is transmitted from the A/D converting portion; wherein the recognizer is configured to: receive the brainwave of the digital type; calculate the fine change of frequency components included in the gamma wave band from the brainwave of the digital type; and determine positive/negative and presence/absence of the intention in response to the fine change; and wherein the fine change of the frequency components is calculated to be [P(first frequency)−P(second frequency)]/[P(first frequency)+P(second frequency)] or P(first frequency)/[P(first frequency)+P(second frequency)], and the first and the second frequencies are ones of the gamma wave band.