Patent ID: 8038601

Claim:
A wireless in-vivo information acquiring system comprising: a body-insertable device that is inserted into a body of a patient, receives a plurality of power supply signals, and transmits a plurality of level determining signals each of which is relevant to the each of the received power supply signals, the body-insertable device including a level determining unit that determines a level of a power supplied by each of the received power supply signals to transmit the plurality of level determining signals each of which indicating the level of the power relevant to each of the power supply signals, wherein the power is used for the body-insertable device to function; a function executing unit that executes a predetermined function to acquire in-vivo information on the body of the patient, wherein the function executing unit uses the received plurality of power supply signals to execute the predetermined function; an external device that is disposed outside the body of the patient and receives a plurality of level determining signals from the body-insertable device, the external device including a power source that generates the plurality of power supply signals for supplying the power to the body-insertable device; a plurality of power supply signal transmitting units each of which is arranged on its predetermined position with respect to the body of the patient and each of which wirelessly transmits one of the power supply signals to the body-insertable device; and a power detecting unit that selects one of the plurality of power supply signal transmitting units based on the received plurality of level determining signals each of which indicates the level of the supplied power, wherein the selected power supply signal transmitting unit is capable of performing the most effective power supply to the body-insertable device and the selected power supply signal transmitting unit wirelessly transmits the power supply signal to the body-insertable device.