CAPSULE ENDOSCOPE APPARATUS AND RECEIVING APPARATUS

1 . A capsule endoscope apparatus that is configured to be introduced into a subject to acquire information on an inside of the subject and to wirelessly communicate with a receiving apparatus provided outside the capsule endoscope apparatus, the capsule endoscope apparatus comprising:

an imaging unit configured to capture images of the subject and generate image data of the inside of the subject;

a transmission unit configured to transmit a wireless signal including the image data, outside the capsule endoscope apparatus;

a receiving unit configured to receive a control signal for instructing an operation of the capsule endoscope apparatus, the control signal having been transmitted from the receiving apparatus; and

a capsule controller configured to activate the receiving unit in synchronization with a transmission timing when the transmission unit transmits the wireless signal, wherein

the imaging unit is configured to capture the images at a specified frame rate, and

the capsule controller is configured to decide the number of times of activation to activate the receiving unit in accordance with the specified frame rate.

2 . The capsule endoscope apparatus according to claim 1 , wherein the capsule controller activates the receiving unit immediately after the transmission unit starts transmitting the wireless signal.

3 . The capsule endoscope apparatus according to claim 1 , wherein the capsule controller activates the receiving unit after the transmission unit completes transmission of the wireless signal.

4 . The capsule endoscope apparatus according to claim 1 , wherein the capsule controller is configured to cause the imaging unit to halt image capture at specified frame intervals, and activate the receiving unit in a pause period during which the imaging unit pauses.

5 . The capsule endoscope apparatus according to claim 1 , wherein when the receiving unit receives the control signal having the same instruction content a plurality of times, the capsule controller causes the capsule endoscope apparatus to execute an operation in accordance with the control signal only once.

6 . A receiving apparatus to which an antenna apparatus having a plurality of antennas is detachably attached, the receiving apparatus comprising:

an antenna selector configured to select one antenna from among the plurality of antennas for receiving a wireless signal transmitted from outside when the antenna apparatus is attached;

a break determination unit configured to determine whether or not a break occurs in the antenna selected by the antenna selector;

a display unit configured to display an image corresponding to image data;

a display controller configured to cause the display unit to display break information indicating that the break occurs in the selected antenna if the break determination unit determines that the break occurs in the selected antenna; and

an operation input unit configured to receive input of an instruction signal to delete the break information, wherein

the display controller causes the display unit to delete only the break information when the instruction signal is input.

7 . A receiving apparatus for receiving a wireless signal having information on an inside of a subject transmitted from a capsule endoscope apparatus introduced into the subject, the receiving apparatus comprising:

a power supply unit configured to supply power to component parts of the receiving apparatus;

a display unit configured to display an image corresponding to image data;

a remaining capacity detection unit configured to detect remaining capacity stored in the power supply unit;

a remaining capacity determination unit configured to determine whether or not the remaining capacity detected by the remaining capacity detection unit is equal to or more than a preset first threshold value;

a display controller configured to cause the display unit to display a warning when the remaining capacity determination unit determines that the remaining capacity is less than the first threshold value; and

a power measurement unit configured to measure power consumption consumed by the display unit, wherein

the remaining capacity determination unit is configured to determine whether or not remaining capacity obtained by subtracting the power consumption measured by the power measurement unit from the remaining capacity detected by the remaining capacity detection unit at a start of an examination is equal to or more than a second threshold value.

8 . The receiving apparatus according to claim 7 , wherein the power measurement unit starts measuring the power consumption when the remaining capacity determination unit determines that the remaining capacity is less than the first threshold value.

9 . The receiving apparatus according to claim 8 , further comprising an operating mode switching unit configured to switch to one of an arbitrary operating mode to allow an arbitrary operation and a restriction mode in which operation is restricted, to set for the receiving apparatus, wherein

the operating mode switching unit sets the receiving apparatus in the restriction mode when the remaining capacity determination unit determines that the remaining capacity of the power supply unit is less than a preset third threshold value.

10 . The receiving apparatus according to claim 9 , further comprising an operation input unit configured to receive input of an instruction signal to set a setting condition for the receiving apparatus before the start of the examination, wherein

the operating mode switching unit switches from the restriction mode to the arbitrary operating mode when the receiving apparatus satisfies the setting condition.

11 . The receiving apparatus according to claim 10 , further comprising a recording unit configured to record the image data, wherein

the setting condition is any of data amount of the image data to be recorded by the recording unit, the remaining capacity of the power supply unit, and elapsed time from execution of the examination.