Patent ID: 11914773
Assignee: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 7:
8. An intention determination method of determining a user's intention according to a brain-machine interface based intention determination device using a virtual environment, the intention determination method comprising:
receiving a control mode input from a user;
outputting training information set according to the control mode;
collecting a brain signal generated from an imagination of the user for the training information;
extracting frequency information according to a preset frequency band from the brain signal, and extracting time-frequency information of a preset time interval from the frequency information;
generating physical information representing a physical magnitude of the extracted time-frequency information by calculating a power spectral density from the extracted time-frequency information;
determining control information according to the physical information based on a classification model generated by learning control information indicating a user's intention according to a pattern in the physical information provided in advance;
outputting a control command when the control command matches the control information; and
when the control command does not match the control information, regenerating the physical information by calculating another power spectral density based on another brain signal having a time and frequency different from the brain signal,
wherein the regenerated physical information is input to the classification model to generate matched control information.