A control device implantable in a human body\u2014includes a control unit and at least one electrode, said control unit being connected to each electrode to control stimulation andor measurement thereof. Portable unit includes a housing, unit controller, tactile input mechanism, audio processor and video processor. An event remains in an associated channel for a period until is retrieved by a peripheral system or expired. The second protocol enables further data to be transmitted in a second frequency range with a second signal sequence and a second signal level. The controller receives a positive response from the subscription server and determines whether a repairencryption module exists for this multicast session. Through the self-calibration hole, the invention needn’t to provide extra photoresists to form holes.