Patent ID: 7361141

Claim:
A portable, personal electronic device for body weight management of a user thereof, comprising: a control unit adapted to control the device; and a user interface coupled to the control unit adapted to enter input information and obtain output information, the control unit being configured to receive an initial weight, a target weight, and a food intake amount of the user via the user interface, the control unit being configured to generate the energy expenditure of the user, to generate the food intake amount and exercise instructions based on a difference between the user's initial weight and the user's target weight for display via the user interface, to receive the user's current weight via the user interface, and to generate a change in the user's weight, the control unit being configured to calibrate itself if the change in the user's weight does not correspond to an estimate made on the basis of the user's food intake amount and the user's energy expenditure by eliminating impact of at least one of errors caused by the user comprising incorrect input data entered by the user, levels of input data derived therefrom, and errors appearing in default settings made by the device, thereby modifying at least one of the food intake amount and the exercise instructions to be displayed via the user interface.