Patent ID: 8449458

Claim:
A body-insertable apparatus that is used in a state of being introduced inside a body of a subject and that executes a predetermined function inside the body of the subject, comprising: a driving controller that controls a driving condition of the predetermined function, an information acquiring unit that acquires in-vivo information of an examined area inside the body of the subject; a radio unit that modulates a signal relating to the in-vivo information, the signal generated by the information acquiring unit, to transmit the modulated signal by radio communication; a power source unit that accumulates driving power to drive the information acquiring unit and the radio unit; and a detector that emits light and detects a distance to an object which lies in a path of the light as a distance to the examined area based on the light reflected from the object, wherein the driving controller includes a supply controller that controls supply of the driving power from the power source unit to the radio unit based on a result of detection by the detector.