Antenna connection unit, received strength correction apparatus and capsule endoscope system

A received strength correction apparatus for correcting a received strength of an antenna connection unit, the antenna connection unit including:

• a received electric field strength detector configured to detect received strength of a wireless signal according to input power from a plurality of receiving antennas for receiving the wireless signal transmitted from a capsule endoscope which is introduced into a subject to acquire image data inside the subject;
• and a storage unit configured to store various pieces of information, the received strength correction apparatus comprising:
• a reference power output unit configured to output a plurality of pieces of reference power to the antenna connection unit;
• a correction parameter generation unit configured to generate a received strength correction parameter for correcting the received electric field strength detector, based on the pieces of reference power output by the reference power output unit and the received strength corresponding to each reference power;
• and
• an output unit configured to output the received strength correction parameter generated by the correction parameter generation unit, to the antenna connection unit.

A capsule endoscope system, comprising:

• a capsule endoscope configured to be introduced into a subject to acquire image data inside the subject, convert the image data into a wireless signal, and transmit the wireless signal to outside;
• a plurality of receiving antennas configured to receive the wireless signal;
• an antenna connection unit including a received electric field strength detector configured to detect received strength of the wireless signal according to a plurality of pieces of input power from the plurality of receiving antennas;
• a receiving device to which the antenna connection unit is removably attached;
• and
• an image display device configured to acquire the image data via the receiving device and display an image corresponding to the image data, wherein
• the antenna connection unit comprises:
• a correction parameter generation unit configured to cause the received electric field strength detector to input pieces of reference power as the pieces of input power, and to generate a received strength correction parameter for correcting the received strength which is obtained by the received electric field strength detector with respect to the pieces of input power from the plurality of receiving antennas, based on the pieces of reference power and the received strength detected by the received electric field strength detector according to the pieces of input power;
• and
• a storage unit for storing the received strength correction parameter generated by the correction parameter generation unit.