Patent ID: 7620450

Claim:
A method of removing noise by using a change in an activity pattern, comprising: recognizing an activity pattern of the subject using an activity sensor; sensing a first bio signal corresponding to the activity pattern from the subject using an electric potential sensor; recognizing a noise generation pattern according to the activity pattern by analyzing a noise component for each section of the first bio signal; selecting filter information for each section according to the noise generation pattern; storing the filter information selected for each section in association with the activity pattern to a memory unit; and removing noise from a second bio signal sensed from the subject by applying the stored filter information, wherein the removing the noise of the second bio signal comprises: recognizing an activity pattern of the subject corresponding to the second bio signal; searching the memory unit for filter information corresponding to the recognized activity pattern for the second bio signal; and removing noise from the second bio signal by applying a filter designated by a result of the searching of the memory for the filter information with respect to a certain section of the second bio signal, of plural sections of the second bio signal.