JP2006075538A - Antenna inspection device and antenna unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily inspect whether all receiving antennas to be inspected are in a state of being capable of normally receiving radio signals. <P>SOLUTION: This antenna inspection device is provided with an inspection control section 104 for inspecting whether the receiving antennas to be inspected are in the state of being capable of normally receiving radio signals from an imaging device led into a subject, based on the receiving result of the receiving antennas to be inspected out of receiving antennas 4a-4d provided at an antenna unit 4 electrically connected in a detachable manner to a device body of a receiving device for acquiring image data imaged by the imaging device, and a connector 107 attachable to and detachable from a connector 45 on the antenna unit 4 side for electrically connecting the antenna unit 4 in a detachable manner to the device body, and electrically connecting the antenna unit 4 to the inspection control section 104. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an antenna inspection apparatus and an antenna unit for inspecting a state of a receiving antenna that receives a radio signal including image data captured by an imaging apparatus, for example, a capsule endoscope, introduced into the body of a subject. .

  In recent years, in the endoscope field, a capsule endoscope, which is a swallowable endoscope provided with an imaging function and a wireless communication function, has been proposed, and a subject imaged by the capsule endoscope Capsule-type endoscope systems that acquire image data are being developed. The capsule endoscope is swallowed from the subject's mouth for observation (examination) until it is naturally excreted from the subject, for example, an organ such as the stomach or the small intestine. The inside moves in accordance with the peristaltic motion and functions to image the inside of the subject at a predetermined interval, for example, 0.5 second interval.

  While the capsule endoscope moves within the subject, image data captured by the capsule endoscope is sequentially transmitted to a receiving system arranged outside the subject via a predetermined radio wave. For example, the reception system includes one or more reception antennas that are attached to a subject and receive radio signals including image data captured by a capsule endoscope, and radio signals received by the reception antennas A demodulator that demodulates an image signal corresponding to data and a data processing system that acquires the image data based on the image signal demodulated by the demodulator are provided (see Patent Document 1).

  In such a receiving system, the demodulator and the receiving apparatus main body provided with the data processing system and an antenna unit in which one or more receiving antennas are collectively provided are detachably connected by connectors. is there.

Special table 2003-526268 gazette

  However, in the conventional reception system described in Patent Document 1 described above, an antenna inspection for inspecting whether or not all the reception antennas provided in the reception apparatus main body or the antenna unit can receive radio signals normally. It has no function. For this reason, for example, before the capsule endoscope transmits a radio signal including the image data in the subject, whether all these receiving antennas can normally receive the radio signal from the capsule endoscope. It was difficult to check whether or not.

  If the state of the receiving antenna is not inspected, imaging of the subject with the capsule endoscope is started with the receiving antenna attached to the subject that cannot normally receive a radio signal from the capsule endoscope. This may cause a situation in which image data captured by the capsule endoscope is not obtained.

  The present invention has been made in view of the above circumstances, and provides an antenna inspection apparatus and an antenna unit that can easily inspect whether or not all receiving antennas to be inspected can normally receive radio signals. For the purpose.

  In order to solve the above-described problems and achieve the object, an antenna inspection apparatus according to claim 1 is detachably electrically connected to a receiving apparatus main body that acquires image data captured by an imaging apparatus introduced into a subject. Based on the reception result of the receiving antenna to be inspected among one or more receiving antennas that are provided in an antenna unit connected to the receiver unit and receive a radio signal from the imaging device that causes the receiving device body to acquire the image data. In addition, an inspection control means for inspecting whether or not the receiving antenna to be inspected can normally receive a radio signal from the imaging device, and the receiving device main body and the antenna unit are electrically connected in a detachable manner. A connector that is detachable from the antenna unit side connector and electrically connects the antenna unit and the inspection control means. And wherein the door.

  According to a second aspect of the present invention, in the above invention, the antenna inspection apparatus detects at least one of horizontal synchronization and vertical synchronization of an image signal included in a radio signal received by the reception antenna to be inspected. Synchronization detection means, and the inspection control means receives the synchronization detection result indicating that the synchronization detection means has detected at least one of horizontal synchronization and vertical synchronization of the image signal of the image signal. If it is acquired as, it is determined that the reception antenna to be inspected can be normally received, and if the synchronization detection result is not acquired, the reception antenna to be inspected is not in a state in which it can be normally received. It is characterized by determining.

  Also, in the antenna inspection apparatus according to claim 3, in the above invention, the inspection control means displays a synchronization detection result indicating that synchronization of a radio signal received by the reception antenna to be inspected is detected as the reception result. If it is acquired as, it is determined that the reception antenna to be inspected can be normally received, and if the synchronization detection result is not acquired, the reception antenna to be inspected is not in a state in which it can be normally received. It is characterized by determining.

  In the antenna inspection apparatus according to claim 4, in the above invention, the inspection control unit acquires a reception electric field strength of a radio signal received by the reception antenna to be inspected as the reception result, and receives the reception electric field strength. Is equal to or greater than a predetermined threshold value, it is determined that the reception antenna to be inspected is in a state in which it can be normally received, and when the received electric field strength is less than the predetermined threshold value, It is determined that the receiving antenna is not in a state where it can be normally received.

  According to a fifth aspect of the present invention, in the above antenna inspection apparatus, the image signal has a signal pattern similar to an image signal including image data captured by the imaging apparatus.

  According to a sixth aspect of the present invention, in the above invention, the antenna inspection apparatus generates a test image signal having a signal pattern similar to the image signal of the image data imaged by the imaging apparatus, and the test image signal is the image signal. And a test signal generating / outputting means for receiving the receiving antenna to be inspected.

  In addition, in the above invention, the antenna inspection apparatus according to claim 7 instructs the inspection control unit to start a process of inspecting whether or not the reception antenna to be inspected is in a state where it can be normally received, and It is characterized by comprising start instruction means for instructing the test signal generation output means to start processing for generating the test image signal.

  Further, in the antenna inspection apparatus according to claim 8, in the above invention, the antenna unit includes a plurality of the reception antennas, and the inspection control unit inspects whether or not the normal reception is possible. Control for sequentially selecting and switching the receiving antennas to be inspected from among the plurality of receiving antennas is automatically performed.

  According to a ninth aspect of the present invention, in the above invention, the antenna inspection apparatus selects a reception antenna to be inspected to inspect whether or not the normal reception is possible among the plurality of reception antennas provided in the antenna unit. It is characterized by having an antenna switching means for switching automatically.

  The antenna inspection apparatus according to claim 10 is characterized in that, in the above invention, the antenna inspection apparatus further comprises an informing means for informing outside of the inspection result indicating whether or not the receiving antenna to be inspected can be normally received. To do.

  The antenna unit according to claim 11 is detachably electrically connected to a receiving device body that acquires image data captured by an imaging device introduced into the subject, and the image data is connected to the receiving device body. In an antenna unit provided with one or more receiving antennas for receiving a radio signal from the imaging device to be acquired, based on a reception result of the receiving antenna to be examined among the one or more receiving antennas, The inspection control means for inspecting whether or not the receiving antenna is in a state where the radio signal from the imaging device can be normally received, and the processing for inspecting whether or not the reception control state is normal can be started for the inspection control means And a start instructing means for instructing.

  According to a twelfth aspect of the present invention, in the above invention, the antenna unit detects at least one of a horizontal synchronization and a vertical synchronization of an image signal included in a radio signal received by the receiving antenna to be inspected. A detection means, and the inspection control means uses, as the reception result, a synchronization detection result indicating that the synchronization detection means has detected at least one of horizontal synchronization and vertical synchronization of the image signal of the image signal. If acquired, it is determined that the reception antenna to be inspected can be normally received, and if the synchronization detection result is not acquired, it is not in a state in which the reception antenna to be inspected can be normally received. It is characterized by determining.

  The antenna unit according to claim 13 is the above invention, wherein the inspection control means uses, as the reception result, a synchronization detection result indicating that synchronization of a radio signal received by the reception antenna to be inspected is detected. If acquired, it is determined that the reception antenna to be inspected can be normally received, and if the synchronization detection result is not acquired, it is not in a state in which the reception antenna to be inspected can be normally received. It is characterized by determining.

  In the antenna unit according to claim 14, in the above invention, the inspection control unit acquires a reception electric field strength of a radio signal received by the reception antenna to be inspected as the reception result, and the reception electric field strength is When it is equal to or greater than a predetermined threshold, it is determined that the reception antenna to be inspected is in a state where it can be normally received. When the received electric field strength is less than the predetermined threshold, It is determined that the antenna is not in a state where it can be normally received.

  Further, the antenna unit according to claim 15 is characterized in that, in the above-mentioned invention, the antenna unit further comprises an informing means for informing the outside of an inspection result indicating whether or not the receiving antenna to be inspected can be normally received. .

  The antenna unit according to claim 16 is the above-described invention, wherein the inspection control unit determines whether or not the reception unit provided in the antenna unit is in a state where it can receive normally. From the above, it is characterized in that the control is performed to sequentially select and switch the receiving antennas to be inspected.

  According to a seventeenth aspect of the present invention, there is provided the antenna unit according to the above invention, wherein a reception antenna to be inspected for inspecting whether or not the reception is normally performed is selected from the plurality of reception antennas provided in the antenna unit. An antenna switching means for switching to is provided.

  According to the present invention, it is possible to determine whether or not a radio signal from the capsule endoscope can be normally received for each reception antenna to be inspected, and all the reception antennas to be inspected are wireless from the capsule endoscope. There is an effect that it is possible to realize an antenna inspection apparatus and an antenna unit that can easily inspect whether or not a signal can be normally received.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of an antenna inspection apparatus and an antenna unit according to the present invention will be described in detail with reference to the drawings, but the present invention is not limited thereto.

(Embodiment 1)
First, a configuration of a capsule endoscope system using a receiving device provided with a receiving antenna to be inspected by an antenna inspection device according to an embodiment of the present invention will be described. FIG. 1 is a schematic view schematically illustrating a configuration example of the capsule endoscope system. As shown in FIG. 1, the capsule endoscope system includes a capsule endoscope 2 that moves along a passage route in the subject 1 and images the inside of the subject 1, and a capsule endoscope 2 Receiving apparatus 3 that receives the image data captured by the capsule endoscope 2, a workstation 6 that displays an image in the subject 1 based on the image data captured by the capsule endoscope 2, the receiving apparatus 3 and the workstation 6 and a portable recording medium 7 for exchanging information with 6.

  The capsule endoscope 2 has an imaging function that can image the inside of the subject 1 and a wireless communication function that transmits image data obtained by imaging the inside of the subject 1 to the receiving device 3. The capsule endoscope 2 passes through the esophagus in the subject 1 by being swallowed by the subject 1, and advances in the body cavity by peristalsis of the digestive tract cavity. At the same time, the capsule endoscope 2 sequentially captures images in the body cavity of the subject 1 and sequentially transmits the obtained image data in the subject 1 to the receiving device 3.

  The workstation 6 is for displaying an image in the subject 1 imaged by the capsule endoscope 2, image data obtained by the capsule endoscope 2 obtained through the portable recording medium 7, and the like. Based on the above, an image of an organ or the like in the subject 1 is displayed. Further, the workstation 6 has a processing function for a doctor or nurse to make a diagnosis based on an image of an organ or the like in the subject by the capsule endoscope 2.

  The portable recording medium 7 is a portable recording medium such as compact flash (registered trademark) or smart media. The portable recording medium 7 is detachable from the receiving device 3 and the workstation 6 and has a structure capable of outputting and recording information when attached to both. Specifically, when the portable recording medium 7 is attached to the receiving device 3, image data in the subject 1 received by the receiving device 3 from the capsule endoscope 2 can be sequentially stored. The portable recording medium 7 is taken out from the receiving device 3 and mounted on the workstation 6 after the capsule endoscope 2 is ejected from the subject 1. The workstation 6 can read various data such as image data in the subject 1 stored in the mounted portable recording medium 7.

  By exchanging data between the receiving device 3 and the workstation 6 using the portable recording medium 7, the subject 1 is different from the case where the receiving device 3 and the workstation 6 are wire-connected by a communication cable or the like. Even when the capsule endoscope 2 is moving inside the subject 1, it can act freely with the receiver 3 being carried.

  The receiving antennas 4a to 4d are realized by using, for example, a loop antenna, and receive a radio signal transmitted from the capsule endoscope 2. As shown in FIG. 1, the receiving antennas 4 a to 4 d are arranged at predetermined positions on the body surface of the subject 1, for example, at positions corresponding to the passage route of the capsule endoscope 2. The receiving antennas 4a to 4d may be arranged at predetermined positions of a jacket to be worn on the subject 1. In this case, the receiving antennas 4a to 4d are arranged at predetermined positions on the body surface of the subject 1 when the subject 1 wears this jacket. The subject 1 may be provided with one or more receiving antennas, and preferably a plurality of receiving antennas. In this case, the number of receiving antennas is not particularly limited to four.

  The receiving device 3 is for performing reception processing of a radio signal received via any one of the receiving antennas 4a to 4d. As shown in FIG. 1, the receiving device 3 includes an antenna unit 4 provided with receiving antennas 4 a to 4 d and a device body 5 that acquires image data and the like by the capsule endoscope 2 via the antenna unit 4. Have. The antenna unit 4 is electrically connected to the receiving antennas 4a to 4d, respectively, and receives image data or the like based on the radio signal received from the capsule endoscope 2 via any of the receiving antennas 4a to 4d. Send. The apparatus body 5 sequentially acquires image data in the subject 1 by the capsule endoscope 2 via a predetermined radio wave transmitted and received between the capsule endoscope 2 and any of the receiving antennas 4a to 4d. . In this case, the receiving apparatus 3 has a plurality of receiving antennas arranged on the subject 1, so that the antenna at a position suitable for receiving a radio signal according to the position of the capsule endoscope 2 in the subject 1. The image data from the capsule endoscope 2 can be received via the.

  FIG. 2 is a block diagram schematically illustrating a configuration example of the receiving device 3. As shown in FIG. 2, the receiving device 3 is configured using an antenna unit 4 and a device body 5. The antenna unit 4 has a connector 45 that functions as an input / output interface for signals with the apparatus body 5. The apparatus main body 5 has a connector 51 that is detachable from the connector 45 and functions as an input / output interface for signals with the antenna unit 4. That is, the antenna unit 4 and the apparatus main body 5 are detachably connected via the connectors 45 and 51.

  In addition, the antenna unit 4 is one of the antenna switching unit 41 that switches the receiving antennas 4a to 4d to a receiving antenna suitable for receiving a radio signal, and the receiving antennas 4a to 4d that are selected by the antenna switching unit 41. And a demodulator 42 that performs a predetermined demodulation process or the like on the radio signal received via. Further, the antenna unit 4 is detected by the reception intensity detection unit 43 and the reception intensity detection unit 43 that detect the reception electric field strength of the received radio signal based on the baseband signal extracted by the demodulation unit 42. And a switching control unit 44 for controlling the antenna switching operation of the antenna switching unit 41 based on the received electric field strength.

  The antenna switching unit 41 selects a predetermined reception antenna based on the control of the switching control unit 44 from the plurality of reception antennas 4a to 4d that are electrically connected, and electrically connects the selected reception antenna and the demodulation unit 42 to each other. Connect to. As a result, the antenna switching unit 41 can switch from the receiving antennas 4a to 4d to a receiving antenna suitable for receiving a radio signal as a receiving antenna electrically connected to the demodulating unit 42. The antenna switching unit 41 outputs a radio signal received via the reception antenna selected from the reception antennas 4 a to 4 d to the demodulation unit 42.

  The demodulator 42 includes a synchronization detector 42 a that detects synchronization of a radio signal received by a receiving antenna electrically connected via the antenna switching unit 41. The demodulator 42 performs predetermined demodulation processing or the like on the radio signal whose synchronization is detected by the synchronization detector 42a, and extracts a baseband signal based on the radio signal. When the antenna unit 4 and the apparatus main body 5 are electrically connected via the connectors 45 and 51, the demodulator 42 outputs the obtained baseband signal to the apparatus main body 5 via the connectors 45 and 51. . Further, the demodulator 42 outputs the obtained baseband signal to the reception intensity detector 43.

  Based on the baseband signal input from the demodulator 42, the received intensity detector 43 detects the received electric field strength of the received radio signal corresponding to the baseband signal. In this case, the reception intensity detection unit 43 outputs an intensity detection signal indicating the detected reception electric field intensity to the switching control unit 44.

  The switching control unit 44 controls the antenna switching operation by the antenna switching unit 41 described above. Specifically, a reception antenna suitable for receiving a radio signal is determined from the reception antennas 4a to 4d based on the intensity detection signal input from the reception intensity detection unit 43, and the determined reception antenna and demodulation unit are determined. The antenna switching unit 41 is controlled so as to be electrically connected to the terminal 42.

  On the other hand, the apparatus body 5 includes an input unit 52 for inputting information necessary for observation (examination) in the subject, a display unit 53 for displaying information input by the input unit 52 on the screen, and a demodulation unit 42. And a signal processing unit 54 that extracts image data and the like by the capsule endoscope 2 based on the extracted baseband signal. The apparatus body 5 includes a control unit 55 that performs predetermined control regarding output of information extracted by the signal processing unit 54, a storage unit 56 that stores extracted information such as image data, and the apparatus body 5. A power supply unit 57 that supplies driving power to each component of the antenna unit 4 and each component of the apparatus body 5 that are electrically connected is provided.

  The input unit 52 is realized using a plurality of input keys and the like. The input unit 52 inputs information necessary for the examination of the subject such as a patient ID and an examination ID or instruction information for instructing the control unit 55 to the control unit 55 in accordance with an input operation by the user.

  The display unit 53 is realized by using a thin display such as a liquid crystal display device or an organic EL panel, and displays information based on the control of the control unit 55. The display unit 53 displays, for example, information corresponding to input information from the input unit 52 such as information necessary for examination on the subject or instruction information input from the input unit 3.

  The signal processing unit 54 is electrically connected to the demodulation unit 42 via the connectors 45 and 51 when the antenna unit 4 and the apparatus main body 5 are electrically connected via the connectors 45 and 51. In this state, the signal processing unit 54 receives the baseband signal extracted by the demodulation unit 42. Based on the baseband signal received from the demodulator 42, the signal processor 54 extracts predetermined information, for example, image data in the subject 1 captured by the capsule endoscope 2. The signal processing unit 54 outputs predetermined information such as image data extracted based on the baseband signal to the control unit 55.

  The control unit 55 includes a CPU (Central Processing Unit) that executes various processing programs, a ROM in which various processing programs are stored in advance, calculation parameters for each process, information input from the input unit 52, or a signal processing unit. This is implemented using a RAM that stores image data input from 54. The control unit 55 controls each component of the apparatus main body 5. The control unit 55 transfers, for example, information input from the input unit 52 or image data extracted by the signal processing unit 54 to the storage unit 56 and stores the information. The control unit 55 controls each component of the antenna unit 4 via the connectors 45 and 51 in a state where the antenna unit 4 and the apparatus main body 5 are electrically connected via the connectors 45 and 51.

  The storage unit 56 can detachably mount the portable recording medium 7, and can store information based on the control of the control unit 55, for example, image data extracted by the signal processing unit 54 or information input from the input unit 2. Write to 7. The storage unit 56 may include a memory IC such as a RAM or a flash memory so that the storage unit 56 itself stores information.

  The power supply unit 57 supplies driving power to each component of the apparatus main body 5 when a power switch (not shown) provided in the apparatus main body 5 is turned on. In addition, the power supply unit 57 supplies driving power to each component of the antenna unit 4 via the connectors 45 and 51 in a state where the antenna unit 4 and the apparatus main body 5 are electrically connected via the connectors 45 and 51. Supply. Examples of the power supply unit 57 include a dry battery, a lithium ion secondary battery, or a nickel hydride battery. The power supply unit 57 may be rechargeable.

  Next, the antenna inspection apparatus according to the first embodiment of the present invention will be described in detail. FIG. 3 is a block diagram schematically illustrating a configuration example of the antenna inspection apparatus according to the first embodiment of the present invention. As shown in FIG. 3, the antenna inspection apparatus 100 is provided with a receiving antenna to be inspected in an antenna state inspection process for inspecting whether or not a radio signal from the capsule endoscope 2 can be normally received. As the antenna unit, the antenna unit 4 is electrically connected. In this case, the antenna inspection apparatus 100 includes a connector 107 that is detachable from the connector 45 and functions as an input / output interface for signals with the antenna unit 4. The antenna inspection device 100 is electrically connected to the antenna unit 4 via connectors 45 and 107. It is desirable that the antenna inspection device 100 has a housing structure that is substantially the same as that of the device body 5 described above. Thereby, the handleability of the antenna inspection apparatus 100 can be improved, and the connection structure between the antenna inspection apparatus 100 and the antenna unit 4 can be optimized.

  The antenna inspection apparatus 100 also instructs the start of the antenna state inspection process and inputs a signal (start instruction signal) for instructing to output a test radio signal for performing the antenna state inspection process, A test signal transmission unit 102 that generates and outputs a radio signal, and a synchronization detection unit 103 that detects synchronization of the baseband signal extracted by the demodulation unit 42. Further, the antenna inspection device 100 includes an inspection control unit 104 that performs predetermined control related to the antenna state inspection process and the antenna state inspection process, and a notification unit that notifies the outside of the result of the antenna state inspection process performed by the inspection control unit 104. 105, and each component of the antenna unit 4 electrically connected to the antenna inspection apparatus 100 and a power supply unit 106 that supplies driving power to each component of the antenna inspection apparatus 100.

  The switch 101 is realized using various switches that can be switched between an on state and an off state, such as a push button switch, a rotary switch, a toggle switch, or a slide switch. The switch 101 inputs a start instruction signal to the test signal transmission unit 102 and the inspection control unit 104 when switched on by the user.

  The test signal transmission unit 102 generates and outputs a test radio signal using the start instruction signal input from the switch 101 as a trigger. In this case, the test signal transmission unit 102 generates a test image signal having a signal pattern similar to the image signal from the capsule endoscope 2, and receives the test radio signal including the generated test image signal from the reception antennas 4a to 4a. Transmit to 4d side.

  The synchronization detector 103 is electrically connected to the demodulator 42 via the connectors 45 and 107 when the antenna unit 4 and the antenna inspection device 100 are electrically connected via the connectors 45 and 107. In this state, the synchronization detector 103 receives a baseband signal extracted by the demodulator 42, for example, an image signal, and performs synchronization detection processing for detecting horizontal synchronization of the received image signal. When the synchronization detection unit 103 performs the synchronization detection process and detects the synchronization in the horizontal direction of the image signal, the synchronization detection unit 103 outputs a synchronization detection signal indicating that the synchronization in the horizontal direction has been detected to the inspection control unit 104.

  The inspection control unit 104 is implemented using a CPU that executes various processing programs, a ROM that stores various processing programs and the like, and a RAM that stores various information such as calculation parameters for each processing. The inspection control unit 104 performs an antenna state inspection process and controls the synchronization detection unit 103, the notification unit 105, the antenna switching unit 41, and the switching control unit 44. For example, the inspection control unit 104 performs an antenna state inspection process and controls the antenna switching unit 41 to switch the receiving antennas 4a to 4d. In this case, the inspection control unit 104 controls the switching control unit 44 to stop the control function for the antenna switching unit 41 described above.

  The notification unit 105 is realized by using a thin display such as a liquid crystal display device or an organic EL panel, a light emitting element such as a light emitting diode, a buzzer or a sound source device, or a screen display based on the control of the inspection control unit 104. , Light, or sound alone or in combination. Thereby, the notification unit 105 notifies the outside of the result of the antenna state inspection process.

  The power supply unit 106 supplies driving power to each component of the antenna inspection apparatus 100 when a power switch (not shown) provided in the antenna inspection apparatus 100 is turned on. The power supply unit 106 is driven to each component of the antenna unit 4 via the connectors 45 and 107 in a state where the antenna unit 4 and the antenna inspection device 100 are electrically connected via the connectors 45 and 107. Supply power. Examples of the power supply unit 106 include a dry battery, a lithium ion secondary battery, or a nickel metal hydride battery. The power supply unit 106 may be rechargeable.

  Next, the receiving antennas 4a to 4d provided in the antenna unit 4 are exemplified as receiving antennas to be inspected, and the operation of the inspection control unit 104 performed until the antenna state inspection processing for the receiving antennas 4a to 4d is achieved. This will be described in detail. FIG. 4 is a flowchart illustrating a processing procedure until the inspection control unit 104 achieves the antenna state inspection processing. In FIG. 4, the inspection control unit 104 does not detect the start instruction signal unless the start instruction signal is input from the switch 101 in a state where the driving power is supplied from the power supply unit 106 (No in step S <b> 101). This step S101 is repeated. That is, the inspection control unit 104 constantly monitors whether or not a start instruction signal is input from the switch 101 in a state where the driving power is supplied.

  In addition, when the user switches the switch 101 to the on state in the state where the driving power is supplied, the inspection control unit 104 detects a start instruction signal input from the switch 101 (Yes in step S101), Using this detected start instruction signal as a trigger, the antenna switching operation for electrically connecting any one of the reception antennas 4a to 4d and the demodulation unit 42 to the antenna switching unit 41 is controlled, and the reception antennas 4a to 4d are controlled. The current receiving antenna (for example, receiving antenna 4a) electrically connected to the demodulator 42 is identified as the receiving antenna to be inspected (step S102). In this case, the inspection control unit 104 detects the electrical connection state between the reception antennas 4a to 4d and the demodulation unit 42 by the antenna switching unit 41, and based on the detected electrical connection state, the reception antenna 4a. The receiving antenna to be examined is specified from ˜4d. Further, the inspection control unit 104 stores the detected electrical connection state.

  At the same time, the inspection control unit 104 controls the switching control unit 44 to stop the control function for the antenna switching unit 41 using the detected start instruction signal as a trigger. The inspection control unit 104 maintains control over the switching control unit 44 in the processing procedure after step S101.

  On the other hand, the test signal transmission unit 102 generates a test image signal using the start instruction signal input from the switch 101 as a trigger, and transmits the test radio signal including the generated test image signal to the reception antennas 4a to 4d. Output. This test radio signal is input to the demodulator 42 through the reception antennas currently inspected, for example, the reception antenna 4a and the antenna switching unit 41, identified in step S102 from the reception antennas 4a to 4d. The synchronization detection unit 42a detects the synchronization of the test radio signal input to the demodulation unit 42. The demodulation unit 42 performs a predetermined demodulation process on the test radio signal whose synchronization is detected by the synchronization detection unit 42a. The baseband signal based on the test radio signal, that is, the test image signal is extracted. Thereafter, the demodulator 42 outputs the extracted test image signal to the synchronization detector 103 via the connectors 45 and 107.

  The synchronization detection unit 103 receives the test image signal extracted by the demodulation unit 42 and performs synchronization detection processing on the received test image signal. When the synchronization detection unit 103 performs the synchronization detection processing and detects the horizontal synchronization of the test image signal, the synchronization detection unit 103 outputs a synchronization detection signal indicating that the horizontal synchronization is detected to the inspection control unit 104. To do. When receiving the synchronization detection signal from the synchronization detection unit 103, the inspection control unit 104 detects that the horizontal synchronization of the test image signal has been detected as a reception result of the reception antenna to be inspected (step S103). , Yes), based on this, it is determined that the reception state of the test image signal by the reception antenna to be inspected, for example, the reception antenna 4a is good (step S104). In this case, the inspection control unit 104 determines that the reception antenna 4a having a good reception state is in a state in which the radio signal from the capsule endoscope 2 can be normally received, and uses the determination result as antenna inspection result information. Remember.

  Next, the inspection control unit 104 electrically connects, to the antenna switching unit 41, a reception antenna that has been determined to have a good reception state in step S104, for example, another reception antenna and the demodulation unit 42 instead of the reception antenna 4a. The antenna switching operation to be performed is controlled (step S105). At the same time, the inspection control unit 104 detects the electrical connection state between the receiving antennas 4a to 4d after the antenna switching operation by the antenna switching unit 41 and the demodulation unit 42, and the detected electrical connection state and the already detected electrical connection state are already detected. Based on the stored electrical connection state, it is determined whether or not the control of the antenna switching operation for electrically connecting any one of the reception antennas 4a to 4d and the demodulation unit 42 has been completed for all reception antennas. To do. If the inspection control unit 104 does not determine that the antenna switching operation of all the receiving antennas to be inspected has been completed (No at Step S106), the processing procedure after Step S102 described above is repeated. Thereby, the inspection control unit 104 can determine whether or not the radio signal from the capsule endoscope 2 can be normally received for each of the receiving antennas to be inspected, for example, the receiving antennas 4a to 4d. .

  Thereafter, the inspection control unit 104 determines that the reception states of the reception antennas 4a to 4d to be inspected are all good, and determines that the antenna switching operation of all the reception antennas to be inspected has been completed (step S106, Yes), the notification unit 105 is controlled so as to notify the outside that all the receiving antennas 4a to 4d to be inspected can normally receive the radio signal from the capsule endoscope 2 (good reception state). (Step S107). In this case, the alerting | reporting part 105 alert | reports outside the screen display, light, or sound which shows a reception favorable state individually or in combination as a result of an antenna state inspection process. The user can easily grasp that all of the receiving antennas 4a to 4d to be inspected are in a good reception state by checking the notification contents output from the notification unit 105.

  On the other hand, the synchronization detection unit 103 performs synchronization detection processing on the test image signal received from the demodulation unit 42, and detects horizontal synchronization when the horizontal synchronization of the test image signal cannot be detected. The synchronization detection signal indicating that the process has been performed is not output to the inspection control unit 104. For example, if the synchronization detection signal is not received from the synchronization detection unit 103 within a predetermined time after specifying the current reception antenna to be inspected, the inspection control unit 104 uses this test as a reception result of the reception antenna to be inspected. It is detected that the horizontal synchronization of the image signal for detection has not been detected (No in step S103), and based on this, the reception state of the image signal for test by the current receiving antenna to be inspected is determined to be defective. (Step S108). In this case, the inspection control unit 104 determines that the reception antenna having a poor reception state is in a state in which the radio signal from the capsule endoscope 2 cannot be normally received, and stores the determination result as antenna inspection result information. To do.

  Thereafter, the inspection control unit 104 notifies the outside that any of the receiving antennas 4a to 4d to be inspected is in a state where the wireless signal from the capsule endoscope 2 cannot be normally received (reception failure state). Then, the notification unit 105 is controlled (step S109). In this case, the alerting | reporting part 105 alert | reports outside the screen display, light, or sound which shows a poor reception state individually or in combination as a result of an antenna state inspection process. The user can easily grasp that any of the receiving antennas 4a to 4d to be inspected is in a poor reception state by checking the content of the notification output from the notification unit 105. In this case, the user can easily estimate that any of the reception antennas 4a to 4d is in a state where the wireless signal cannot be received due to, for example, a disconnected state or noise.

  Next, the configuration of the test signal transmission unit 102 provided in the antenna inspection apparatus 100 will be described in detail. FIG. 5 is a block diagram schematically illustrating a configuration example of the test signal transmission unit 102. As shown in FIG. 5, the test signal transmission unit 102 includes a timing generation unit 102a, a pattern generation unit 102b, a modulation unit 102c, an RF circuit 102d, and a transmission antenna 102e.

  The timing generation circuit 102a is for generating the same timing as the processing timing of the image sensor incorporated in the capsule endoscope 2. Specifically, the timing generation circuit 102a is electrically connected to the switch 101. When a start instruction signal is input from the switch 101, the timing generation circuit 102a is similar to the processing timing of the image sensor based on a predetermined basic clock signal. The timing is generated. In this case, the timing generation unit 102a outputs a timing signal corresponding to the generated timing to the pattern generation unit 102b.

  The pattern generator 102b generates a signal pattern similar to the image signal from the image sensor based on the timing signal input from the timing generator 102a. The pattern generation unit 102b generates an image signal of the generated signal pattern as the test image signal described above, and outputs the generated test image signal to the modulation unit 102c.

  The modulation unit 102c performs a predetermined modulation process on the test image signal input from the pattern generation unit 102b, and modulates the test image signal. The modulation unit 102c outputs the modulated test image signal to the RF circuit 102d.

  The RF circuit 102d is for transmitting the test image signal after the modulation process input from the modulation unit 102c to the outside, for example, the receiving antennas 4a to 4d as a test radio signal. Specifically, the RF circuit 102d performs power amplification processing or the like on the test image signal after the modulation process input from the modulation unit 102c, and the high-frequency signal including the test image signal, that is, the test radio signal Is generated. The RF circuit 102d is electrically connected to a transmission antenna 102e such as a loop antenna, and outputs the generated test radio signal from the transmission antenna 102e.

  Here, when the inspection control unit 104 performs the antenna state inspection process, the test signal transmission unit 102 includes a test radio signal including a test image signal having a signal pattern similar to the image signal from the capsule endoscope 2. The signal is transmitted to the receiving antennas 4a to 4d side. In this case, the demodulator 42 selects a reception antenna in a good reception state among the reception antennas 4a to 4d even in the presence of a wireless signal transmitted from another wireless signal transmission source not involved in the antenna state inspection process. The test radio signal can be received via the test radio signal, and the test image signal can be extracted based on the received test radio signal. Therefore, the synchronization detection unit 103 can perform synchronization detection processing on the test image signal even in the presence of a radio signal that is not involved in the antenna state inspection processing, indicating that horizontal synchronization has been detected. Can be output to the inspection control unit 104. For this reason, the inspection control unit 104 can reliably perform the antenna state inspection process without erroneously determining the reception state of the receiving antenna due to the radio signal not involved in the antenna state inspection process.

  Further, the inspection control unit 104 determines the reception state of the reception antenna to be inspected based on whether or not the horizontal synchronization of the image signal received via the reception antenna to be inspected, for example, the test image signal is detected. Therefore, it can be practically determined whether or not the receiving antenna to be inspected can receive a radio signal from the capsule endoscope 2. This is based on whether the vertical synchronization of the test image signal received through the receiving antenna to be inspected is detected or whether both the vertical synchronization and the horizontal synchronization are detected. The same applies when the reception state of the receiving antenna to be inspected is determined. That is, the synchronization detection unit 103 performs synchronization detection processing for detecting the vertical synchronization of the image signal received from the demodulation unit 42, for example, the test image signal, in addition to the horizontal synchronization described above, and performs the vertical synchronization. When detected, a synchronization detection signal indicating that the detection has been performed may be output to the inspection control unit 104. Alternatively, the synchronization detection unit 103 performs synchronization detection processing for detecting both the horizontal synchronization and the vertical synchronization of the test image signal received from the demodulation unit 42, and the horizontal synchronization and the vertical synchronization are detected. When both are detected, a synchronization detection signal indicating the detection may be output to the inspection control unit 104.

  In the first embodiment of the present invention, this inspection is performed when at least one of the horizontal synchronization and the vertical synchronization of the image signal received via the receiving antenna to be inspected, for example, the test image signal is detected. Although the target receiving antenna has been determined to be in a good reception state, the present invention is not limited to this, and the radio signal received through the receiving antenna to be inspected before being demodulated, for example, the synchronization of the test radio signal May be determined to be in a good reception state.

  FIG. 6 is a block diagram schematically illustrating a configuration example of an antenna inspection apparatus which is Modification 1 of Embodiment 1 of the present invention. This antenna inspection device 110 is provided with an inspection control unit 111 in place of the inspection control unit 104 of the antenna inspection device 100 described above, and does not have the synchronization detection unit 103 described above. The inspection control unit 111 is electrically connected to the synchronization detection unit 42a of the demodulation unit 42 instead of the synchronization detection unit 103 described above. Other configurations are the same as those of the first embodiment described above, and the same components are denoted by the same reference numerals.

  As described above, the synchronization detection unit 42a detects the synchronization of a radio signal, for example, a test radio signal, received by the reception antenna electrically connected to the demodulation unit 42 via the antenna switching unit 41. When detecting the synchronization of the test radio signal, the synchronization detection unit 42a outputs a synchronization detection signal indicating that the synchronization is detected to the inspection control unit 111.

  The inspection control unit 111 has substantially the same configuration and function as the inspection control unit 104 described above. Specifically, the inspection control unit 111 performs substantially the same processing procedure as the above-described steps S101 to S109, determines whether the receiving antenna to be inspected is in a good reception state or a poor reception state, The determination result is output to the notification unit 105. In this case, the inspection control unit 111 determines whether the reception antenna to be inspected is in a good reception state or a bad reception state based on the synchronization detection signal from the synchronization detection unit 42a instead of the synchronization detection signal from the synchronization detection unit 103 described above. It is determined whether it is.

  In Embodiment 1 of the present invention and Modification 1 thereof, when the receiving antenna to be inspected is determined to be in a good reception state, the receiving antenna is sequentially switched from the receiving antenna to the remaining receiving antennas to be inspected. When the reception antenna to be inspected is determined to be in a poor reception state, the remaining reception antennas to be inspected and the demodulator 42 are not electrically connected, and the inspection indicating this reception failure state is performed. Although the result has been reported to the outside, the present invention is not limited to this, and all the receiving antennas to be inspected are sequentially connected to the demodulator 42 regardless of the determination result of the receiving state of the receiving antenna to be inspected. May be connected to each other, and the reception state may be determined for each of all the receiving antennas to be inspected. In this case, the result of the antenna state inspection process for each reception antenna to be inspected may be notified to the outside.

  In Embodiment 1 of the present invention and Modification 1 thereof, when performing antenna state inspection processing on a reception antenna to be inspected, any one of the reception antennas 4a to 4d and the demodulation unit 42 via the antenna switching unit 41 However, the present invention is not limited to this, and the connection state between the receiving antenna to be inspected and the demodulation unit 42 is controlled. It may be switched manually.

  FIG. 7 is a block diagram schematically illustrating a configuration example of an antenna inspection apparatus which is Modification Example 2 of Embodiment 1 of the present invention. In this antenna inspection device 120, an inspection control unit 122 is provided instead of the inspection control unit 104 of the antenna inspection device 100 described above, and a changeover switch 121 is further provided. The changeover switch 121 is electrically connected to the inspection control unit 122. Other configurations are the same as those of the first embodiment described above, and the same components are denoted by the same reference numerals.

  The changeover switch 121 is realized by using various switches such as a rotary switch that can switch a plurality of contacts. The change-over switch 121 can switch the same number of contacts as the receiving antenna to be inspected, and has at least four contacts corresponding to the receiving antennas 4a to 4d, for example. The changeover switch 121 inspects and controls a changeover instruction signal for instructing the user to electrically connect any of the receiving antennas 4a to 4d and the demodulator 42, for example, when the user performs a switch operation to select the contact point. Input to the unit 122.

  The inspection control unit 122 has substantially the same configuration and function as the inspection control unit 104 described above. Specifically, the inspection control unit 111 performs substantially the same processing procedure as the above-described steps S101 to S109, determines whether the receiving antenna to be inspected is in a good reception state or a poor reception state, The determination result is output to the notification unit 105. In this case, the inspection control unit 122 performs the processing procedure of step S104 described above, and then performs the processing procedure of step S107 without performing the processing procedure of steps S105 and S106 described above. Thereafter, the inspection control unit 122 waits to receive a switching instruction signal from the selector switch 121. When the inspection control unit 122 receives from the selector switch 121 a switching instruction signal for instructing switching from the current receiving antenna to be inspected to another receiving antenna, the inspection control unit 122 electrically connects the receiving antenna and the demodulation unit 42 based on the switching instruction signal. The antenna switching unit 41 is controlled so as to be connected to. Thereafter, the inspection control unit 122 sequentially determines whether the reception antenna to be inspected is in a good reception state or a poor reception state for each reception antenna switched for each switching instruction signal input from the changeover switch 121. The determination result is sequentially output to the notification unit 105.

  In Embodiment 1 of the present invention and Modifications 1 and 2 thereof, an antenna unit provided with a plurality of receiving antennas is electrically connected to an antenna inspection apparatus, and an antenna is provided for each of the receiving antennas of the plurality of receiving antennas. However, the present invention is not limited to this, and the antenna unit provided with one receiving antenna is electrically connected to the antenna inspection apparatus, and the receiving antenna is connected to the receiving antenna. Antenna state inspection processing can also be performed.

  Further, in Embodiment 1 of the present invention and Modifications 1 and 2 thereof, the test signal transmission unit 102 is provided in the housing of the antenna inspection apparatus. However, the present invention is not limited to this, and the test is performed. An external radio signal transmission source that can output a test radio signal similar to that of the signal transmission unit 102 may be used, and the test radio signal output from the radio signal transmission source may be received by the receiving antenna to be inspected. In this case, the wireless signal transmission source has a small housing structure that is almost the same as that of the capsule endoscope 2, and has a functional configuration that is substantially the same as that of the test signal transmission unit 102 in the housing structure. It is desirable. Thereby, the handleability of the antenna inspection apparatus and the workability of the antenna state inspection process can be improved.

  As described above, according to the first embodiment of the present invention, whether at least one of horizontal synchronization and vertical synchronization of an image signal, for example, a test image signal received via a receiving antenna to be inspected has been detected. Is detected as the reception result of this reception antenna, and based on the detected reception result, the reception state of this reception antenna is judged to be good or bad, so the radio signal from the capsule endoscope is received normally Antenna inspection that can determine whether or not it can be performed for each receiving antenna to be inspected, and can easily inspect whether or not all receiving antennas to be inspected can normally receive radio signals from the capsule endoscope An apparatus can be realized.

  Further, in the first modification of the first embodiment, the synchronization detection unit in the existing demodulation unit is used as the antenna unit, and the radio signal before demodulation processing, for example, the test radio signal received via the receiving antenna to be inspected is synchronized. And detecting whether or not this synchronization is detected as a reception result of this reception antenna, and based on the detected reception result, it is determined that the reception state of this reception antenna is good or bad. The operation and effect of the above-described first embodiment can be enjoyed without newly providing a synchronization detection unit for performing synchronization detection processing on an image signal extracted by the processing, for example, a test image signal. An antenna inspection apparatus that can promote reduction in size and weight can be realized.

  Furthermore, in the second modification of the first embodiment of the present invention, the reception antenna to be inspected is configured to be manually switched, so that the reception antenna to be inspected is used from all the reception antennas provided in the antenna unit. The user can freely select and can easily check the inspection result for each selected receiving antenna to be inspected.

(Embodiment 2)
Next, a second embodiment of the present invention will be described in detail. In the first embodiment described above, based on whether or not at least one of the horizontal synchronization and the vertical synchronization of the image signal received through the reception antenna to be inspected, for example, the test image signal, has been detected, this reception antenna. In the second embodiment, the reception electric field strength of the radio signal received through the receiving antenna to be inspected, for example, the test radio signal is the reception result of this receiving antenna. And the reception antenna is determined to be in a good reception state or a poor reception state based on the acquired reception field strength.

  FIG. 8 is a block diagram schematically showing a configuration example of an antenna inspection apparatus according to Embodiment 2 of the present invention. The antenna inspection device 130 includes an inspection control unit 131 instead of the inspection control unit 104 of the antenna inspection device 100 described above, and does not include the synchronization detection unit 103 described above. The inspection control unit 111 is electrically connected to the reception intensity detection unit 43 instead of the synchronization detection unit 103. Other configurations are the same as those of the first embodiment described above, and the same components are denoted by the same reference numerals.

  As described above, the reception intensity detection unit 43 detects the reception field intensity of the test radio signal corresponding to the test image signal based on the baseband signal input from the demodulation unit 42, for example, the test image signal. When the reception intensity detection unit 43 detects the reception electric field intensity of the test radio signal, that is, the reception electric field intensity of the test radio signal received via the reception antenna to be inspected, the intensity detection signal indicating the detected reception electric field intensity Is output to the inspection control unit 131.

  The inspection control unit 131 has substantially the same configuration and function as the inspection control unit 104 described above. In addition, the inspection control unit 131 stores a threshold value for comparison with the received electric field strength acquired from the received strength detection unit 43 in advance. The inspection control unit 131 uses this threshold value as determination criterion information for determining the reception state of the receiving antenna to be inspected based on the received electric field strength.

  FIG. 9 is a flowchart illustrating a processing procedure until the inspection control unit 131 achieves the antenna state inspection processing. In FIG. 9, the inspection control unit 131 performs the same processing procedure as in steps S101 and S102 described above, specifies the reception antenna to be inspected from the reception antennas 4a to 4d (steps S201 and S202), and the antenna switching unit. The connection state between the receiving antenna 41 and the demodulator 42 is stored.

  Next, the inspection control unit 131 receives the intensity detection signal from the reception intensity detection unit 43, and acquires the received electric field intensity based on the intensity detection signal (step S203). In this case, the reception strength detection unit 43 detects the reception field strength of a radio signal received through the reception antenna to be inspected, for example, a test radio signal, and the strength detection signal indicating the detected reception field strength is detected by the inspection control unit. It outputs to 131. That is, in step S203, the inspection control unit 131 acquires the reception field strength of the test radio signal received via the reception antenna to be inspected from the reception intensity detection unit 43 as a reception result of the reception antenna.

  When acquiring the received electric field intensity from the received intensity detecting unit 43, the inspection control unit 131 performs an intensity comparison process for comparing the threshold value stored in advance with the acquired received electric field intensity. When the inspection control unit 131 performs this intensity comparison process and determines that the acquired received electric field intensity is equal to or greater than the threshold value (Yes in step S204), based on this, the current receiving antenna to be inspected Is determined to be good (step S205). In this case, the inspection control unit 131 determines that the reception antenna having a good reception state is the above-described reception good state, and stores this determination result as antenna inspection result information.

  Thereafter, the inspection control unit 131 performs a processing procedure similar to the processing procedure after step S105 described above (steps S206 to S208). In this case, as in the case of the above-described first embodiment, the inspection control unit 131 repeats the processing procedure after step S202 described above unless it determines that the antenna switching operation of all the receiving antennas to be inspected has been completed. .

  On the other hand, when the inspection control unit 131 performs the intensity comparison process described above and determines that the acquired received electric field intensity is less than the threshold value (No in step S204), based on this, the current inspection object The receiving state of the receiving antenna is determined to be defective (step S209). In this case, the inspection control unit 131 determines that the reception antenna having a poor reception state is the reception failure state described above, and stores the determination result as antenna inspection result information. After that, the inspection control unit 131 controls the notification unit 105 to notify the outside that any of the reception antennas 4a to 4d is in a poor reception state, similarly to step S109 described above (step S210).

  In the second embodiment of the present invention, any of the reception antennas 4a to 4d and the demodulation unit 42 are electrically connected via the antenna switching unit 41 when the antenna state inspection process is performed on the reception antenna to be inspected. The inspection control unit 131 automatically controls the antenna switching operation to be performed, but the present invention is not limited to this, and a changeover switch is provided in the same manner as in the second modification of the first embodiment described above, You may comprise so that the connection state of a receiving antenna and the demodulation part 42 may be switched manually.

  In Embodiment 2 of the present invention, an antenna unit provided with a plurality of receiving antennas is electrically connected to an antenna inspection device, and an antenna state inspection process is performed for each of the receiving antennas of the plurality of receiving antennas. However, the present invention is not limited to this, and an antenna unit provided with one receiving antenna is electrically connected to an antenna inspection device, and an antenna state inspection process is performed on the receiving antenna. You can also.

  Furthermore, in the second embodiment of the present invention, the test signal transmission unit 102 is provided in the housing of the antenna inspection apparatus. However, the present invention is not limited to this, and a predetermined value that can be demodulated by the demodulation unit 42 is provided. A radio signal transmission source capable of outputting a radio signal having a frequency may be disposed inside or outside the housing of the antenna inspection apparatus, and the radio signal output from the radio signal transmission source may be received by the receiving antenna to be inspected. In this case, the radio signal output from the radio signal transmission source may not include an image signal having the same signal pattern as the image signal from the capsule endoscope 2. In addition, when the wireless signal transmission source is disposed outside, the wireless signal transmission source has a small housing structure that is almost the same as that of the capsule endoscope 2, and is substantially the same as the test signal transmission unit 102 in the housing structure. It is desirable to have a functional configuration. Thereby, the handleability of the antenna inspection apparatus and the workability of the antenna state inspection process can be improved.

  As described above, in the second embodiment of the present invention, the received electric field strength of the radio signal received via the receiving antenna to be inspected is acquired as the reception result of the receiving antenna, and the acquired received electric field strength is obtained. Originally, since the reception state of this receiving antenna is determined to be good or bad, even if a wireless signal that does not include an image signal having a signal pattern similar to the image signal by the capsule endoscope is used, Whether or not the radio signal from the capsule endoscope can be normally received can be determined for each receiving antenna to be inspected, and the effects of the first embodiment described above can be enjoyed. An antenna inspection device that can promote reduction in size and weight can be realized.

(Embodiment 3)
Next, a third embodiment of the present invention will be described in detail. In the above-described first embodiment and its modifications 1 and 2 and the second embodiment, the antenna unit provided with the receiving antenna to be inspected is detachably connected electrically, and the receiving antenna to be inspected is connected to the antenna unit. Although the antenna inspection apparatus for performing the antenna state inspection processing is configured, in the third embodiment, the functional configuration substantially similar to that of the antenna inspection apparatus is built in the antenna unit itself.

  FIG. 10 is a block diagram schematically illustrating a configuration example of the antenna unit according to the third embodiment of the present invention. As shown in FIG. 10, the antenna unit 200 has the same configuration as the antenna unit 4 described above, and further includes a switch 201, a synchronization detection unit 202, an inspection control unit 203, and a notification unit 204. Therefore, the antenna unit 200 is detachably electrically connected to the above-described apparatus body 5 via the connectors 45 and 51. In this case, the antenna unit 200 and the apparatus main body 5 constitute a receiving apparatus used in the above-described capsule endoscope system.

  When the reception unit of the capsule endoscope system is configured by the antenna unit 200 and the apparatus main body 5, the demodulation unit 42 is electrically connected to the signal processing unit 54 via the connectors 45 and 51, and the inspection control unit 203. Are electrically connected to the control unit 55 via connectors 45 and 51. The power supply unit 57 supplies driving power to each component of the apparatus body 5 and each component of the antenna unit 200 via the connectors 45 and 51.

  The switch 201 is realized using various switches that can be switched between an on state and an off state, such as a push button switch, a rotary switch, a toggle switch, or a slide switch. The switch 201 inputs the above-described start instruction signal to the inspection control unit 203 when switched on by the user.

  The synchronization detection unit 202 functions in the same manner as the synchronization detection unit 103 of the antenna inspection apparatus 100 described above. Specifically, the synchronization detection unit 202 is electrically connected to the demodulation unit 42 and receives a baseband signal, for example, an image signal extracted by the demodulation unit 42. In addition, the synchronization detection unit 202 performs synchronization detection processing for detecting horizontal synchronization of the baseband signal received from the demodulation unit 42, for example, an image signal, and detects horizontal synchronization of the image signal. A synchronization detection signal indicating that synchronization has been detected is output to the inspection control unit 203.

  The inspection control unit 203 has substantially the same function and configuration as the inspection control unit 104 of the antenna inspection apparatus 100 described above. That is, the inspection control unit 104 performs the antenna state inspection process and controls the synchronization detection unit 202, the notification unit 204, the antenna switching unit 41, and the switching control unit 44 in the same manner as the above-described inspection control unit 104.

  The inspection control unit 203 is controlled by the control unit 55 when the antenna unit 200 and the apparatus main body 5 are electrically connected via the connectors 45 and 51. Specifically, when the antenna unit 200 and the apparatus main body 5 are electrically connected via the connectors 45 and 51, the control unit 55 electrically connects the antenna unit 200 and the apparatus main body 5 to each other. This is detected, and a standby signal for switching the operation mode of the inspection control unit 203 from the normal mode to the standby mode is output to the inspection control unit 203. The inspection control unit 203 switches the operation mode from the normal mode to the standby mode based on the standby signal received from the control unit 55. The inspection control unit 203 is in a low power consumption state in which almost no driving power from the power supply unit 57 is consumed in the standby mode, almost stops its function, and waits for a start instruction signal from the switch 201. When receiving the start instruction signal from the switch 201, the inspection control unit 203 switches the operation mode from the standby mode to the normal mode based on the start instruction signal. This normal mode is an operation mode in which the inspection control unit 203 operates in the same manner as the above-described inspection control unit 104 using the driving power from the power supply unit 57.

  Furthermore, the control unit 55 performs, for example, processing operation and control for acquiring image data or the like by the capsule endoscope 2 based on instruction information input from the input unit 52, with respect to the inspection control unit 203. An operation inhibition signal for switching the operation mode of the inspection control unit 203 to the operation inhibition mode is output. The inspection control unit 203 switches the operation mode from the standby mode to the operation inhibition mode based on the operation inhibition signal received from the control unit 55. The inspection control unit 203 is in a low power consumption state in which almost no driving power from the power supply unit 57 is consumed in the operation prohibition mode, and its function is almost stopped. In this case, even if the user performs an input operation of the start instruction signal using the switch 201, the inspection control unit 203 does not perform an operation based on the start instruction signal. Thus, the examination control unit 203 does not hinder the processing operation and control of the control unit 55 for acquiring image data and the like by the capsule endoscope 2.

  On the other hand, when the operation control mode is switched from the standby mode to the normal mode, the inspection control unit 203 prohibits the control unit 55 from performing processing operation and control for acquiring image data or the like by the capsule endoscope 2. The control signal is output. The control unit 55 stops this processing operation and control based on the control signal received from the inspection control unit 203. Accordingly, the control unit 55 can prevent the image data based on the test image signal described above from being erroneously acquired as the image data obtained by the capsule endoscope 2.

  Further, the notification unit 204 has substantially the same configuration and function as the notification unit 105 of the antenna inspection apparatus 100 described above. That is, the notification unit 204 notifies the outside of the result of the antenna state inspection process by outputting the screen display, light, or sound based on the control of the inspection control unit 203 alone or in combination to the outside.

  The dummy capsule 300 is for generating and outputting a test radio signal used for the antenna state inspection process for the reception antennas to be inspected, for example, the reception antennas 4a to 4d. The dummy capsule 300 has substantially the same configuration and function as the test signal transmission unit 102 of the antenna inspection apparatus 100 described above. The dummy capsule 300 is provided with a power supply unit 301 that supplies driving power for generating and outputting a test radio signal to the dummy capsule 300. The power supply unit 301 is a portable power source such as a dry battery, a lithium ion secondary battery, or a nickel metal hydride battery. When the power switch 301a is switched to an on state, a predetermined driving power is supplied to the dummy capsule 300. Supply. The dummy capsule 300 uses the driving power from the power supply unit 301 to generate the above-described test image signal, and transmits the test radio signal including the generated test image signal to the reception antenna to be inspected, for example, the reception antennas 4a to 4d. To do.

  Further, the dummy capsule 300 has a small housing structure that is substantially the same as that of the capsule endoscope 2, and has a functional configuration that is substantially the same as that of the test signal transmission unit 102 described above. Thereby, the portability of the dummy capsule 300 and the workability of the antenna state inspection process can be improved.

  Next, the operation of the inspection control unit 203 performed until the antenna state inspection process for the receiving antennas 4a to 4d provided in the antenna unit 200 is achieved will be described. The inspection control unit 203 performs the same processing procedure as that in steps S101 to S109 described above, determines whether the reception antenna to be inspected is in a good reception state or a poor reception state, and notifies the determination result to the notification unit. 204. In this case, the test radio signal generated and output by the dummy capsule 300 is received by one of the reception antennas 4a to 4d instead of the test radio signal by the test signal transmission unit 102 described above.

  Here, as in the case of the first embodiment described above, the demodulator 42 receives the reception antenna 4a even in the presence of a radio signal transmitted from another radio signal transmission source not involved in the antenna state inspection process. The test radio signal can be received through the reception antennas in the good reception state among ˜4d, and the test image signal can be extracted based on the received test radio signal. The synchronization detection unit 202 performs synchronization detection processing on the test image signal. Therefore, the inspection control unit 203 can reliably perform the antenna state inspection process without erroneously determining the reception state of the receiving antenna due to the radio signal not involved in the antenna state inspection process.

  Also, the inspection control unit 203 actually determines whether or not the receiving antenna to be inspected can receive a radio signal from the capsule endoscope 2 as in the case of the inspection control unit 104 of the first embodiment described above. Can be judged automatically. This is based on whether the vertical synchronization of the test image signal received through the receiving antenna to be inspected is detected or whether both the vertical synchronization and the horizontal synchronization are detected. The same applies when the reception state of the receiving antenna to be inspected is determined. That is, the synchronization detection unit 202 performs not only the above-described horizontal synchronization but also a synchronization detection process for detecting the vertical synchronization of the image signal received from the demodulation unit 42, for example, the test image signal, and performs the vertical synchronization. If detected, a synchronization detection signal indicating this detection may be output to the inspection control unit 203. Alternatively, the synchronization detection unit 202 performs a synchronization detection process for detecting both the horizontal synchronization and the vertical synchronization of the test image signal received from the demodulation unit 42, and the horizontal synchronization and the vertical synchronization are detected. When both are detected, a synchronization detection signal indicating this detection may be output to the inspection control unit 203.

  In the third embodiment of the present invention, when at least one of the horizontal synchronization and the vertical synchronization of the image signal received via the receiving antenna to be inspected, for example, the test image signal is detected, this inspection is performed. Although the target receiving antenna has been determined to be in a good reception state, the present invention is not limited to this, and the radio signal received through the receiving antenna to be inspected before being demodulated, for example, the synchronization of the test radio signal May be determined to be in a good reception state.

  FIG. 11 is a block diagram schematically illustrating a configuration example of an antenna unit that is Modification 1 of Embodiment 3 of the present invention. This antenna unit 210 is provided with an inspection control unit 211 instead of the above-described inspection control unit 203 of the antenna unit 200, and does not have the above-described synchronization detection unit 202. The inspection control unit 211 is electrically connected to the synchronization detection unit 42a of the demodulation unit 42 instead of the synchronization detection unit 202 described above. Other configurations are the same as those of the third embodiment described above, and the same components are denoted by the same reference numerals.

  When the synchronization detection unit 42 a detects the synchronization of the test radio signal input to the demodulation unit 42, the synchronization detection unit 42 a outputs a synchronization detection signal indicating that this synchronization has been detected to the inspection control unit 211. The inspection control unit 211 has substantially the same configuration and function as the inspection control unit 203 described above. Specifically, the inspection control unit 211 determines whether the reception antenna to be inspected is in a good reception state or a poor reception state by performing almost the same processing procedure as in Steps S101 to S109 described above. The determination result is output to the notification unit 204. In this case, the inspection control unit 211 determines whether the reception antenna to be inspected is in a good reception state or in a poor reception state based on the synchronization detection signal from the synchronization detection unit 42a instead of the synchronization detection signal from the synchronization detection unit 202 described above. It is determined whether it is.

  In Embodiment 3 of the present invention and Modification 1 thereof, when it is determined that the reception antenna to be inspected is in a good reception state, the reception antenna is sequentially switched from this reception antenna to the remaining reception antennas to be inspected. When the reception antenna to be inspected is determined to be in a poor reception state, the remaining reception antennas to be inspected and the demodulator 42 are not electrically connected, and the inspection indicating this reception failure state is performed. Although the result has been reported to the outside, the present invention is not limited to this, and all the receiving antennas to be inspected are sequentially connected to the demodulator 42 regardless of the determination result of the receiving state of the receiving antenna to be inspected. May be connected to each other, and the reception state may be determined for each of all the receiving antennas to be inspected. In this case, the result of the antenna state inspection process for each reception antenna to be inspected may be notified to the outside.

  Further, in Embodiment 3 of the present invention and Modification 1 thereof, when performing antenna state inspection processing on a reception antenna to be inspected, any one of the reception antennas 4a to 4d and the demodulation unit 42 via the antenna switching unit 41 However, the present invention is not limited to this, and the connection state between the receiving antenna to be inspected and the demodulating unit 42 is controlled. It may be switched manually.

  FIG. 12 is a block diagram schematically illustrating a configuration example of an antenna unit which is Modification Example 2 of Embodiment 3 of the present invention. In this antenna unit 220, an inspection control unit 222 is provided instead of the inspection control unit 203 of the antenna unit 200 described above, and a changeover switch 221 is further provided. The changeover switch 221 is electrically connected to the inspection control unit 222. Other configurations are the same as those of the third embodiment described above, and the same components are denoted by the same reference numerals.

  The changeover switch 221 has the same configuration and function as those of the changeover switch 121 provided in the antenna inspection device 120 of the second modification of the first embodiment described above. For example, any one of the reception antennas 4a to 4d and the demodulation unit 42 A switching instruction signal for instructing switching so as to be electrically connected is input to the inspection control unit 222.

The inspection control unit 222 has substantially the same configuration and function as the above-described inspection control unit 203,
The antenna switching control function similar to the inspection control unit 122 provided in the antenna inspection apparatus 120 according to the second modification of the first embodiment described above is provided instead of the automatic control function of the antenna switching operation. Specifically, the inspection control unit 222 determines whether the reception antenna to be inspected is in a good reception state or a poor reception state by performing almost the same processing procedure as in steps S101 to S109 described above. The determination result is output to the notification unit 105. In this case, the inspection control unit 222 operates in the same manner as the inspection control unit 122 of the antenna inspection device 120 described above.

  In the third embodiment of the present invention and the first and second modifications thereof, the power supply unit 57 of the apparatus main body 5 electrically connected via the connectors 45 and 51 includes the antenna units 200, 210, and 220. However, the present invention is not limited to this, and a power supply unit that can be detachably connected to an antenna unit having an antenna state inspection processing function is used. The power supply unit may be configured to supply driving power to each component of the antenna unit.

  FIG. 13 is a block diagram schematically illustrating a configuration in which the power supply unit is electrically connected to the antenna unit 200. As shown in FIG. 13, the power supply unit 400 includes a connector 401 that is detachable from the connector 45 and functions as a power supply interface for the antenna unit 200, for example. In this case, the power supply unit 400 is electrically connected to the antenna unit 200 in place of the apparatus main body 5 described above.

  The power supply unit 400 is realized by using various batteries such as a dry battery, a lithium ion secondary battery, or a nickel metal hydride battery, or a rechargeable power source. The power supply unit 400 includes a power switch 400a that can be switched between an on state and an off state, and, as described above, is detachably connected to the antenna unit 200 via the connectors 45 and 401. Is called. In this case, it is desirable that the power supply unit 400 be configured as small as possible within a range in which the connector 401 can be provided. Thereby, the portability of the power supply unit 400 and the antenna unit 200 and the workability of the antenna state inspection process can be improved.

  Further, the power supply unit 400 supplies driving power to each component of the antenna unit 200 via the connectors 45 and 401 when the power switch 400a is switched to the on state. Accordingly, the inspection control unit 203 can be driven using the driving power supplied from the power supply unit 400 even if the antenna unit 200 and the apparatus main body 5 are not electrically connected. Therefore, the inspection control unit 203 can perform the antenna state inspection process for the reception antennas 4a to 4d by the single antenna unit 200 to which the power supply unit 400 is electrically connected. This is the same when the antenna units 210 and 220 and the power supply unit 400 are electrically connected instead of the antenna unit 200.

  In the third embodiment and its modifications 1 and 2 of the present invention, an antenna unit provided with a plurality of receiving antennas has been exemplified. However, the present invention is not limited to this, and one receiving antenna is provided. An antenna unit may be provided. In this case, the antenna state inspection process may be performed on one receiving antenna provided in the antenna unit.

  In the third embodiment of the present invention and the first and second modifications thereof, the dummy capsules 300 are arranged outside the antenna units 200, 210, 220 and the apparatus main body 5. However, the present invention is limited to this. A wireless signal transmission source that functions in the same way as the dummy capsule 300, for example, the test signal transmission unit 102 built in the antenna inspection apparatus 100 of the first embodiment described above is provided in the antenna units 200, 210, 220 or the apparatus body 5. It may be built in.

  Further, in the third embodiment of the present invention and its modifications 1 and 2, the result of determining whether the receiving antenna to be inspected is in a good reception state or a poor reception state is used as a result of the antenna state inspection process. The notification unit 204 is notified, but the present invention is not limited to this, and the determined result may be displayed on the display unit 53 of the apparatus main body 5.

  As described above, in the third embodiment of the present invention, at least the horizontal synchronization and the vertical synchronization of the image signal, for example, the test image signal received via the receiving antenna to be inspected provided in itself are described. The functional configuration for detecting whether or not one is detected as the reception result of this receiving antenna, and the functional configuration for determining the reception status of this receiving antenna as good or bad based on the detected reception result Since it is built in the antenna unit provided with a receiving antenna, it can be determined for each receiving antenna to be inspected whether it can receive radio signals from the capsule endoscope normally. An antenna unit that can easily check whether or not all target receiving antennas can normally receive radio signals from a capsule endoscope. It can be current.

  Further, in the first modification of the third embodiment, the radio signal before demodulation processing received via the receiving antenna to be inspected provided in itself using the synchronization detection unit in the existing demodulation unit as the antenna unit, for example, The test radio signal synchronization is detected, and whether or not this synchronization is detected is detected as a reception result of this reception antenna. Based on the detected reception result, the reception state of this reception antenna is determined to be good or bad. Therefore, the operation and effect of the third embodiment described above can be enjoyed without newly providing a synchronization detection unit for performing synchronization detection processing on an image signal extracted by demodulation processing, for example, a test image signal, and the apparatus configuration is simplified. And an antenna unit that can promote reduction in size and weight of the apparatus can be realized.

  Further, in the second modification of the third embodiment of the present invention, since the receiving antenna to be inspected provided in itself can be manually switched, the inspection is performed from among all the receiving antennas provided in the antenna unit. The user can freely select the target receiving antenna, and the inspection result for each selected receiving antenna can be easily confirmed.

(Embodiment 4)
Next, a fourth embodiment of the present invention will be described in detail. In the third embodiment described above, based on whether or not at least one of the horizontal synchronization and the vertical synchronization of the image signal received through the reception antenna to be inspected, for example, the test image signal is detected, this reception antenna In the fourth embodiment, the reception electric field strength of the radio signal received through the receiving antenna to be inspected, for example, the test radio signal is the reception result of this receiving antenna. And the reception antenna is determined to be in a good reception state or a poor reception state based on the acquired reception field strength.

  FIG. 14 is a block diagram schematically showing a configuration example of an antenna unit according to the fourth embodiment of the present invention. The antenna unit 230 includes an inspection control unit 231 instead of the inspection control unit 203 of the antenna unit 200 described above, and does not include the synchronization detection unit 202 described above. The inspection control unit 231 is electrically connected to the reception intensity detection unit 43 instead of the synchronization detection unit 202 described above. Other configurations are the same as those of the third embodiment described above, and the same components are denoted by the same reference numerals.

  As described above, the reception intensity detection unit 43 detects the reception electric field intensity of a radio signal received by any of the reception antennas 4a to 4d, for example, a test radio signal, and outputs an intensity detection signal indicating the detected reception electric field intensity. The data is output to the inspection control unit 231. The inspection control unit 231 has substantially the same configuration and function as the inspection control unit 203 described above. Further, the inspection control unit 231 has the same antenna state inspection processing function as the inspection control unit 131 of the antenna inspection apparatus 130 described above. That is, the inspection control unit 231 stores in advance a threshold value for comparison with the received electric field strength acquired from the received strength detection unit 43, similarly to the inspection control unit 131 of the antenna inspection device 130 described above, and the steps described above. The same processing procedure as S201 to S210 is performed to determine whether the receiving antenna to be inspected is in a good reception state or a poor reception state, and the determination unit 204 outputs the determination result. In this case, the test radio signal generated and output by the dummy capsule 300 is received by one of the reception antennas 4a to 4d instead of the test radio signal by the test signal transmission unit 102 described above.

  In the fourth embodiment of the present invention, any of the reception antennas 4a to 4d and the demodulation unit 42 are electrically connected via the antenna switching unit 41 when the antenna state inspection process is performed on the reception antenna to be inspected. The inspection control unit 231 automatically controls the antenna switching operation to be performed, but the present invention is not limited to this, and a changeover switch is provided in the same manner as in the second modification of the third embodiment described above. You may comprise so that the connection state of a receiving antenna and the demodulation part 42 may be switched manually.

  In the fourth embodiment of the present invention, an antenna unit provided with a plurality of receiving antennas is illustrated. However, the present invention is not limited to this and is an antenna unit provided with one receiving antenna. May be. In this case, the antenna state inspection process may be performed on one receiving antenna provided in the antenna unit itself.

  Furthermore, in the fourth embodiment of the present invention, the power supply unit 57 of the apparatus body 5 electrically connected via the connectors 45 and 51 supplies driving power to each component of the antenna unit 230. The present invention is not limited to this, and uses the power supply unit that can be detachably connected to the antenna unit 230 in the same manner as in the third embodiment and the first and second modifications thereof. The power supply unit may be configured to supply driving power to each component of the antenna unit 230.

  In the fourth embodiment of the present invention, the dummy capsule 300 is disposed outside the antenna unit 230 and the apparatus main body 5. However, the present invention is not limited to this and functions in the same manner as the dummy capsule 300. The test signal transmitter 102 incorporated in the antenna inspection apparatus 100 of the first embodiment described above may be incorporated in the antenna unit 230 or the apparatus body 5.

  Further, in the fourth embodiment of the present invention, the notification unit 204 is informed of the result of determining whether the reception antenna to be inspected is in a good reception state or a poor reception state as a result of the antenna state inspection process. However, the present invention is not limited to this, and the determination result may be displayed on the display unit 53 of the apparatus body 5.

  As described above, in the fourth embodiment of the present invention, the functional configuration for acquiring the reception electric field strength of the radio signal received through the receiving antenna to be inspected provided as the reception result of the receiving antenna. And a functional configuration for determining whether the reception state of the reception antenna is good or bad based on the acquired reception electric field strength is built in the antenna unit, so that it is the same as the image signal by the capsule endoscope. Whether or not a radio signal from a capsule endoscope can be normally received for each receiving antenna to be inspected provided by itself even if a radio signal not including an image signal having a signal pattern is used. An antenna unit that can be determined and enjoys the effects of the third embodiment described above, and that can promote simplification of the device configuration and reduction in size and weight of the device scale. It can be.

It is a schematic diagram which illustrates typically one structural example of a capsule type endoscope system. It is a block diagram which illustrates typically an example of 1 composition of a receiving device. It is a block diagram which illustrates typically the example of 1 composition of the antenna inspection device which is Embodiment 1 of this invention. It is a flowchart which illustrates the process sequence until it achieves the antenna state inspection process based on a synchronous detection. It is a block diagram which illustrates typically one structural example of a test signal transmission part. It is a block diagram which illustrates typically the example of 1 composition of the antenna inspection device which is modification 1 of Embodiment 1 of this invention. It is a block diagram which illustrates typically the example of 1 composition of the antenna inspection device which is modification 2 of Embodiment 1 of this invention. It is a block diagram which shows typically the example of 1 structure of the antenna inspection apparatus which is Embodiment 2 of this invention. It is a flowchart which illustrates the process sequence until it achieves the antenna state inspection process based on received electric field strength. It is a block diagram which illustrates typically one structural example of the antenna unit which is Embodiment 3 of this invention. It is a block diagram which illustrates typically one structural example of the antenna unit which is the modification 1 of Embodiment 3 of this invention. It is a block diagram which illustrates typically one structural example of the antenna unit which is the modification 2 of Embodiment 3 of this invention. It is a block diagram which illustrates typically the composition where the electric power supply unit was electrically connected with the antenna unit. It is a block diagram which shows typically the example of 1 structure of the antenna unit which is Embodiment 4 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Subject 2 Capsule-type endoscope 3 Receiving device 4,200,210,220,230 Antenna unit 4a-4d Receiving antenna 5 Apparatus main body 6 Workstation 41 Antenna switching part 42 Demodulating part 42a, 103,202 Synchronization detection part 43 Reception strength detection unit 44 Switching control unit 45, 51, 107, 401 Connector 52 Input unit 53 Display unit 54 Signal processing unit 55 Control unit 56 Storage unit 57, 106, 301 Power supply unit 100, 110, 120, 130 Antenna inspection device 101, 201 switch 102 test signal transmission unit 102a timing generation unit 102b pattern generation unit 102c modulation unit 102d RF circuit 102e transmission antenna 104, 111, 131, 203, 211, 222, 231 inspection control unit 105, 204 notification unit 121, 2 21 switch 300 dummy capsule 301a, 400a power switch 400 power supply unit

Claims (17)

The imaging apparatus provided in an antenna unit that is detachably electrically connected to a receiving apparatus main body that acquires image data captured by an imaging apparatus introduced into a subject, and causes the receiving apparatus main body to acquire the image data Whether or not the inspection target receiving antenna can normally receive the radio signal from the imaging device based on the reception result of the inspection target receiving antenna among the one or more receiving antennas that receive the radio signal from Inspection control means for inspecting
A connector that is detachably attached to the antenna unit side connector that detachably connects the receiving device main body and the antenna unit, and that electrically connects the antenna unit and the inspection control means;
An antenna inspection apparatus comprising:   It further comprises synchronization detection means for detecting at least one of horizontal synchronization and vertical synchronization of an image signal included in a radio signal received by the reception antenna to be inspected, and the inspection control means is the synchronization detection means When the synchronization detection result indicating that at least one of horizontal synchronization and vertical synchronization of the image signal of the image signal is detected is acquired as the reception result, the reception antenna to be inspected is normally received. The antenna inspection according to claim 1, wherein if the synchronization detection result is not acquired, it is determined that the reception antenna to be inspected is not in a state in which the antenna can be normally received when the synchronization detection result is not acquired. apparatus.   The inspection control means, when acquiring a synchronization detection result indicating that synchronization of a radio signal received by the reception antenna to be inspected is detected as the reception result, normally receiving the reception antenna to be inspected. The antenna inspection according to claim 1, wherein if the synchronization detection result is not acquired, it is determined that the reception antenna to be inspected is not in a state in which the antenna can be normally received when the synchronization detection result is not acquired. apparatus.   The inspection control means obtains the reception electric field strength of the radio signal received by the reception antenna to be inspected as the reception result, and when the reception electric field strength is a predetermined threshold value or more, the inspection target reception Determining that the antenna can be normally received, and determining that the reception antenna to be inspected is not normally received when the received electric field strength is less than the predetermined threshold value. The antenna inspection apparatus according to claim 1, wherein:   The antenna inspection apparatus according to claim 2, wherein the image signal has a signal pattern similar to an image signal including image data captured by the imaging apparatus.   Test signal generation output means for generating a test image signal having a signal pattern similar to the image signal of the image data imaged by the imaging device and causing the test antenna to receive the test image signal as the image signal. The antenna inspection apparatus according to claim 1, wherein the antenna inspection apparatus is provided.   A process for instructing the inspection control means to start a process for inspecting whether or not the receiving antenna to be inspected can be normally received, and a process for generating the test image signal to the test signal generation output means The antenna inspection apparatus according to claim 6, further comprising start instructing means for instructing to start the operation.   The antenna unit has a plurality of reception antennas, and the inspection control unit sequentially selects a reception antenna to be inspected from the plurality of reception antennas every time it checks whether or not the reception is normal. The antenna inspection apparatus according to claim 1, wherein the switching control is automatically performed.   The antenna switching means for selectively switching a receiving antenna to be inspected to check whether or not the receiving unit is in a normal receiving state among the plurality of receiving antennas provided in the antenna unit. The antenna inspection device according to any one of 1 to 7.   The antenna inspection according to any one of claims 1 to 9, further comprising an informing means for informing an inspection result indicating whether or not the receiving antenna to be inspected is in a state where the receiving antenna can be normally received. apparatus. A wireless signal is received from the imaging device that is detachably electrically connected to a receiving device main body that acquires image data captured by an imaging device introduced into the subject and that causes the receiving device main body to acquire the image data. In an antenna unit provided with one or more receiving antennas,
Inspection control for inspecting whether or not the receiving antenna to be inspected can normally receive a radio signal from the imaging device based on the reception result of the receiving antenna to be inspected among the one or more receiving antennas Means,
Start instruction means for instructing the inspection control means to start processing for inspecting whether or not the normal reception is possible;
An antenna unit comprising:   And synchronization detection means for detecting at least one of horizontal synchronization and vertical synchronization of an image signal included in a radio signal received by the reception antenna to be inspected, and the inspection control means includes the synchronization detection means When the synchronization detection result indicating that at least one of horizontal synchronization and vertical synchronization of the image signal of the image signal is detected is acquired as the reception result, the reception antenna to be inspected is normally received. The antenna unit according to claim 11, wherein it is determined that the reception target antenna is not in a state in which the inspection target reception antenna is not normally received when it is determined that the reception detection target is not acquired. .   The inspection control means, when acquiring a synchronization detection result indicating that synchronization of a radio signal received by the reception antenna to be inspected is detected as the reception result, normally receiving the reception antenna to be inspected. The antenna unit according to claim 11, wherein it is determined that the reception target antenna is not in a state in which the inspection target reception antenna is not normally received when it is determined that the reception detection target is not acquired. .   The inspection control means obtains the reception electric field strength of the radio signal received by the reception antenna to be inspected as the reception result, and when the reception electric field strength is a predetermined threshold value or more, the inspection target reception Determining that the antenna can be normally received, and determining that the reception antenna to be inspected is not normally received when the received electric field strength is less than the predetermined threshold value. The antenna unit according to claim 11, wherein   The antenna unit according to any one of claims 11 to 14, further comprising notification means for notifying an inspection result indicating whether or not the reception antenna to be inspected is in a state where the reception antenna can be normally received. .   The inspection control unit automatically performs control to sequentially select and switch the reception antennas to be inspected from among the plurality of reception antennas provided in the antenna unit each time whether or not the normal reception is possible. The antenna unit according to any one of claims 11 to 15, wherein the antenna unit is performed in an automatic manner.   The antenna switching means for selectively switching a reception antenna to be inspected to check whether or not the reception is normal among the plurality of reception antennas provided in the antenna unit. The antenna unit as described in any one of 11-15.

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