Patent ID: 8180592

Claim:
A portable monitoring device adapted to couple to a body of a user, the portable monitoring device comprising: a housing having a physical size and shape that is adapted to couple to the body of the user; a motion sensor, disposed in the housing, to detect motion of a user and, in response thereto, to generate data which is representative of motion of the user; an altitude sensor, disposed in the housing, to detect a change in altitude of the user and, in response thereto, to generate data which is representative of the change in altitude of the user; processing circuitry, disposed in the housing and coupled to the motion sensor and the altitude sensor, to calculate: a change in elevation of the user using the data which is representative of motion of the user and the data which is representative of a change in altitude of the user, and a state of an avatar using the data which is representative of motion of the user and/or the data which is representative of a change in altitude of the user; and a display, coupled to the processing circuitry, to output data which is representative of the state of the avatar, wherein the avatar is a graphical representation of the user.