Patent ID: 8742888

Claim:
A human body communication apparatus, comprising: a plurality of contact sensor units including a plurality of electrodes configured to contact a human body and having conductivity; a plurality of electrostatic capacity sensor units coupled to the electrodes and configured to sense a change in electrostatic capacity as a result of contact with the human body, and further configured to generate a contact signal using the sensed electrostatic capacity; a signal analyzer unit configured to analyze the contact signal received from the contact sensor units to determine a user intent; a central processing unit configured to process information received through the electrodes; a control signal generator unit configured to generate a first control signal as the analysis result in the signal analyzer unit, wherein the first control signal is transmitted to the central processing unit as a wake-up signal to control a power state of the central processing unit; and a data signal processor unit configured to transmit and receive a data signal to and from external devices, wherein the data signal processor unit is configured to transmit and receive the data signal through a frequency division system using a frequency modulated continuous wave mode in which a transmitting carrier frequency and receiving carrier frequency are different to each other.