JP2005304513A - Receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent an inspection from being performed (an initialization processing before the inspection from being performed) by using a battery whose charge state is insufficient. <P>SOLUTION: The charge state of the battery 17 is judged in a charge state judgement part 33 inside a cradle 30 and a control part C inside an external device 2b judges the charge state of the battery 17 on the basis of the judged result. In the case that the control part C judges that the charging of the battery 17 is not completed for instance, responding to a communication request from a display device 4 is not performed and thereby the initialization of a receiver 2 is made impossible. Also, in the case of judging that the charging of the battery 17 is completed, responding to the communication request from the display device 4 is performed and the initialization of the receiver 2 is made possible. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an in-subject introduction device introduced into a subject, for example, a reception device that receives a wireless video signal transmitted from a swallowable capsule endoscope using a plurality of antennas outside the subject, In particular, the present invention relates to a receiving device that enables initial setting based on the state of charge of a battery as a power source.

  In recent years, in the field of endoscopes, capsule endoscopes equipped with an imaging function and a wireless communication function have appeared. This capsule endoscope is an observation period after it is swallowed from the subject's mouth, which is a subject for observation (examination), until it is naturally discharged from the subject's body, for example, the stomach, the small intestine, etc. The internal organs (inside the body cavity) move with the peristaltic movement, and images are sequentially captured using the imaging function.

  Also, during this observation period of moving through these organs, image data imaged in the body cavity by the capsule endoscope is sequentially transmitted to the outside of the subject by a wireless communication function such as wireless communication, and an external receiving device It is stored in a memory provided in the inside. When the subject carries the receiving device equipped with the wireless communication function and the memory function, the subject is incapable of performing the observation even during the observation period from swallowing the capsule endoscope until it is discharged. It is possible to act freely without incurring freedom. After the observation, a doctor or a nurse can make a diagnosis by displaying an image in the body cavity on a display means such as a display based on the image data stored in the memory of the receiving device.

  In general, a receiving apparatus distributes and arranges a plurality of antennas for receiving video signals transmitted from a capsule endoscope outside a subject, and selects and receives one antenna having good reception sensitivity. ing. In Patent Document 1, reception switching of a plurality of antennas arranged outside the subject is performed, and capsule-type endoscopy in the subject, which is a transmission source of the video signal, based on the electric field strength received by each antenna. A receiver for detecting the position of the mirror is described.

Japanese Patent Laid-Open No. 2003-19111

  By the way, such a capsule endoscope receiving apparatus is based on the premise that a fully charged battery is used to receive and record a video signal as an inspection result from the capsule endoscope. However, in this conventional receiving apparatus, whether or not the battery can be used until the end of the inspection does not monitor the state of charge of the battery in advance, so for example, the inspection is started using a battery with an insufficiently charged state. In such a case, the battery may run out during use, and the inspection record may be interrupted.

  The present invention has been made in view of the above problems, and monitors the state of charge of the battery before the inspection. If the charge of the battery does not reach a predetermined value, the inspection is performed for the subject. It is an object of the present invention to provide a receiving apparatus that prevents an inspection using a battery with insufficient charge by preventing the initial setting of the receiving apparatus.

  In order to solve the above-described problems and achieve the object, a receiving apparatus according to the present invention has an antenna capable of receiving a radio signal transmitted from a transmitting apparatus introduced into a subject, and is used as a drive power source. In a receiving apparatus having a dischargeable battery, a determination unit that determines a state of charge of the battery, and another unit for performing an initial setting of the receiving apparatus related to the examination of the subject based on a determination result of the determination unit Communication control means for controlling communication with the other device.

  Further, in the receiving device according to the invention of claim 2, in the above invention, the communication control means indicates that the determination result by the determination means indicates that the state of charge of the battery has reached a state of charge greater than or equal to a predetermined value. In addition, the communication is permitted in response to a communication request from the other device.

  According to a third aspect of the present invention, in the above invention, the receiving device further includes a charger for charging the battery, wherein the determination unit is provided in the charger, and the determination result is transmitted to the communication control unit. It is characterized by being output to.

  According to a fourth aspect of the present invention, there is provided a receiving apparatus according to the above-mentioned invention, further comprising notification means for notifying a charged state of the battery.

  In the receiving device according to the present invention, when the battery does not reach a predetermined charging state, the communication control unit prohibits communication with another device, and when the battery reaches a predetermined charging state, communication with the other device is performed. Therefore, it is possible to prevent the inspection from being performed using a battery having an insufficient charge state.

  Embodiments of a receiving apparatus according to the present invention will be described below in detail with reference to the drawings of FIGS. The present invention is not limited to these embodiments, and various modifications can be made without departing from the scope of the present invention.

(Embodiment 1)
FIG. 1 is a schematic diagram illustrating an overall configuration of a wireless in-vivo information acquiring system including a receiving apparatus according to the first embodiment. In FIG. 1, a wireless in-vivo information acquisition system includes a receiving device 2 having a wireless receiving function, and a body cavity image that is introduced into the subject 1 to capture data such as a video signal to the receiving device 2. A capsule endoscope (intra-subject introducing device) 3 that performs transmission is provided. In addition, the wireless in-vivo information acquiring system performs data transfer between the display device 4 that displays the intra-body cavity image based on the video signal received by the receiving device 2 and the receiving device 2 and the display device 4. And a cradle 30 for the purpose. The receiving device 2 includes a receiving jacket 2a worn by the subject 1 and an external device 2b that performs processing of received radio signals.

  The display device 4 is a device for displaying an in-vivo image taken by the capsule endoscope 3 with another device according to the present invention, and displays an image based on data obtained via the cradle 30. It has a configuration such as a workstation for performing. Specifically, the display device 4 may be configured to directly display an image using a CRT display, a liquid crystal display, or the like, or may be configured to output an image to another medium such as a printer.

  Next, the configuration of the receiving apparatus will be described with reference to the schematic diagram of FIG. 2 and the block diagram of FIG. The receiving device 2 has a function of receiving image data in the body cavity that is wirelessly transmitted from the capsule endoscope 3. As shown in FIG. 2 and FIG. 3, the receiving device 2 has a shape that can be worn by the subject 1 and is received via the receiving jacket 2a and the receiving jacket 2a including the receiving antennas A1 to An. And an external device 2b for processing radio signals. The receiving antennas A1 to An may be directly attached to the outer surface of the subject 1 and may not be provided on the receiving jacket 2a, or may be detachable from the receiving jacket 2a.

  As shown in FIG. 2, a battery pack 6 for storing a power supply battery is mounted on the outer surface of the external device 2b, and driving power is supplied from the battery to the internal device of the external device 2b. Yes. On the front surface of the outer surface, a display unit 14 is provided as a display unit made of, for example, a liquid crystal display, and displays identification information such as the registered inspection ID. Further, when the external device 2b is placed on the cradle 30 on the bottom surface of the outer surface, it is connected to the cradle 30 via the power supply line LB and the signal line LS to enable charging of a battery described later. A charging terminal 17a of the power supply line LB and a connection terminal 18a of the signal line LS that enables data communication between the external device 2b and the display device 4 that is another device are provided. Further, a connection part CON for connecting the receiving antennas A1 to An is provided on the upper surface of the outer surface. Note that these receiving antennas A1 to An have connectors CON1 to CONn connected to the connection part CON.

  The external device 2b has a function of processing a radio signal transmitted from the capsule endoscope 3. That is, as shown in FIG. 3, the external device 2b is connected to the selector switch SW for switching the connection of each of the receiving antennas A1 to An and the reception switch connected by the selector switch SW. A receiving circuit 11 for amplifying and demodulating radio signals from the antennas A1 to An, and a signal processing circuit 12 and a sample hold circuit 15 are connected to the subsequent stage of the receiving circuit 11. An A / D converter 16 is further connected to the subsequent stage of the sample hold circuit 15.

  The control unit C includes a selection control unit C1 as control means, and connects the signal processing circuit 12, the A / D conversion unit 16, the storage unit 13 for recording image data, the display unit 14, and the switching control unit SC. The switching control unit SC has an intensity receiving antenna number N1 and a video receiving antenna number N2. Based on these pieces of number information, the switching control unit SC issues a switching instruction for the changeover switch SW, and the sample hold circuit 15 and the A / D conversion unit. 16 and the processing timing of the selection control unit C1 are instructed. Moreover, the control part C has a function as a communication control means, and controls whether communication with the display apparatus 4 is permitted based on the determination result from the charge condition determination part 33 mentioned later. Yes. That is, in the examination inside the subject using the capsule endoscope, the examination process starts after the initial setting of the receiving device 2, so that the control unit C determines from the charge state judgment unit 33. Based on the result, it is determined whether or not the communication for performing the initial setting is permitted, thereby preventing the inspection record from being interrupted. The power supply unit 17 includes a battery in the battery pack 6 and supplies power to each internal device described above.

  The change-over switch SW of the external device 2b outputs radio signals from the receiving antennas A1 to An to the receiving circuit 11 based on a switching instruction from the switching control unit SC. Here, the changeover switch SW has a connection part CON as antenna switching means for connecting the reception antennas A1 to An in correspondence with the arrangement positions of the reception antennas A1 to An, respectively.

  The connection part CON has a detection function for detecting the connection state of the connectors CON1 to CONn. For example, for the connector CON1, the connection part CON has an antenna connection detection part 21 as shown in FIG. 4, and also has the same antenna connection detection part for the other connectors CON2 to CONn. In FIG. 4, the connector CON1 connects the signal line LS and the ground line LG from the receiving antenna A1 to the connection part CON, and branches and outputs the ground line LG. The connection unit CON connects the signal line LS to the switching unit SW1 as it is, and is switched and connected to the receiving circuit 11 based on the signal S5 instructing switching.

  On the other hand, one of the ground lines LG is grounded as it is, and the other of the ground lines LG is connected to the constant voltage source VDD. When the connector CON1 is connected to the connection part CON, the voltage signal from the constant voltage source VDD flows to one side of the ground line LG, so that the signal S6 is not output to the selection control part C1 of the control part C that is external. When the connector CON1 is not connected to the connection part CON, the voltage signal from the constant voltage source VDD is output as it is to the selection control part C1 as the signal S6. Therefore, the selection control unit C1 can determine whether or not the connector CON1, that is, the receiving antenna A1 is connected, by detecting the presence or absence of the signal S6 that is the voltage signal. By providing a similar detection unit corresponding to each of the connectors CON2 to CONn, the selection control unit C1 can determine whether or not each reception antenna A1 to An is connected.

  In FIG. 3, as described above, the receiving circuit 11 amplifies the radio signal, outputs the demodulated video signal S1 to the signal processing circuit 12, and receives the received intensity signal that is the received electric field strength of the amplified radio signal. S2 is output to the sample hold circuit 15. The video data processed by the signal processing circuit 12 is stored in the storage unit 13 by the control unit C and displayed and output by the display unit 14. The signal sampled and held by the sample and hold circuit 15 is converted into a digital signal by the A / D conversion unit 16 and taken into the control unit C, and the receiving antenna that has received the highest received electric field strength is used for receiving the video signal period. In addition to selecting as an antenna, receiving antennas other than the selected receiving antenna are sequentially selected as receiving antennas in the intensity receiving period, and each receiving antenna number is set as a video receiving antenna number N2 and an intensity receiving antenna number. The signal S4 for N1 is output to the switching control unit SC. Here, the selection control unit C1 sets the reception antennas to be switched only for the reception antennas A1 to An that are currently connected based on the signal S6. Further, the control unit C stores the received electric field strength in the intensity receiving period and the received electric field strength in the video receiving period in the storage unit 13 together with the video data in association with the reception antenna selected at that time. The stored received electric field strength of each receiving antenna becomes information for calculating the position of the capsule endoscope 3 in the body cavity when the video data is received.

  The switching control unit SC holds the strength receiving antenna number N1 and the video receiving antenna number N2 instructed by the selection control unit C1, and sets the receiving antennas A1 to An corresponding to the strength receiving antenna number N1 during the strength receiving period. The switch SW is instructed to make a selective connection, and a signal S5 instructing the changeover switch SW to make a selective connection to the receiving antennas A1 to An corresponding to the video receiving antenna number N2 during the video reception period. , A signal S3a for instructing the sample / hold timing by the sample / hold circuit 15, a signal S3b for instructing the A / D conversion timing by the A / D converter 16, and a signal S3c for instructing the selection control timing by the selection controller C1 Is output.

  FIG. 5 is a configuration diagram showing a connection form between the receiving device and the display device shown in FIG. 1, and FIG. 6 is a block diagram showing a configuration of the connection form portion shown in FIG. In these drawings, the cradle 30 determines a communication unit 31 that enables data transfer between the external device 2b and the display device 4, a charger 32 that charges the battery of the external device 2b, and the state of charge of this battery. A charging state determination unit 33. The communication unit 31 of the cradle 30 is electrically connected to the display device 4 by wire or wirelessly, and enables data transfer by synchronizing data between the external device 2b and the display device 4. The charger 32 includes a charge control IC, and performs charge control of the battery 17 by, for example, a change with time of charge (change in a rising slope in the voltage of the battery to be charged). The charge state determination unit 33 can determine the charge state of the battery 17 by detecting an output signal indicating the operation state or the charge state of the charge control IC.

  When the external device 2 b of the receiving device 2 is placed on the cradle 30, the battery 17 is connected to the charger 32 of the cradle 30 via the cradle 30, the charging terminal 17 a and the connection terminal 18 a of the interface unit 18. The interface unit 18 is configured to be connected to the communication unit 31 and the charging state determination unit 33, respectively. Further, in the external device 2b, when the state of charge of the battery 17 is insufficient, the control unit C performs communication control of the communication unit 31 to disallow communication with the display device 4 and to provide notification means. The display unit 14 is controlled to display to that effect, such as “charging” or “initial setting not possible”. Note that the control unit C performs communication control of the communication unit 31 so that communication with the display device 4 is possible when the state of charge of the battery 17 is sufficient, that is, when the state of charge reaches a predetermined value or more. I do. Here, the state of charge equal to or greater than a predetermined value is a state of charge in which the receiving device 2 can be driven for a longer time than the time during which the capsule endoscope 3 can perform an imaging operation inside the subject 1. pointing.

  The external device 2b includes a hard disk as an internal storage medium as the storage unit 13 shown in FIG. Therefore, before the inspection, the external device 2b is placed on the cradle 30, and identification information such as the inspection ID from the display device 4 of the workstation is stored in the storage unit 13 of the external device 2b via the cradle 30. The

  Next, while the capsule endoscope 3 is moving in the body cavity of the subject 1, the external device 2 b is detached from the cradle 30, attached to the subject 1, and removed from the capsule endoscope 3. Record the data to be sent. Then, after the imaging of the inside of the subject 1 is completed, the external device 2b is placed on the cradle 30 again, and the data recorded in the storage unit 13 is read by the display device 4.

  Next, the communication control operation of the receiving device 2 will be described based on the flowchart of FIG. In FIG. 7, when the previous investigation is completed (step 101) and the external device 2b of the receiving device 2 is placed on the cradle 30, the battery 17 is charged by the charger 32 of the cradle 30 (step 102). . Then, the control unit C determines whether or not the charging state K determined by the charging state determination unit 33 is equal to or higher than a preset reference charging state K0 (step 103). In this determination, the reference charge state K0 indicates the state of charge of the battery that does not run out of battery during the inspection. For example, the charge state is expressed as a percentage, and the state of charge of the battery is the reference charge state. Judgment is made based on whether% is reached.

  Here, when the state of charge K of the battery 17 is less than the reference state of charge K0, the control unit C displays this fact on the display unit 14 and controls the communication unit 31 to display from the display device 4. The charging in step 102 is continued without responding to the communication request. When the charging state K of the battery 17 reaches the reference charging state K0, the control unit C controls the communication unit 31 to respond to a communication request from the display device 4 and permits communication. After initial settings such as registration of identification information such as an inspection ID (step 104), the external device 2b is removed from the cradle and a new inspection can be started (step 105).

  As described above, in the first embodiment, the charging state of the battery is monitored, and when the charging of the battery is not completed, the communication unit does not respond to the communication request of the display device that is the workstation. By preventing the initial setting of the receiving device, it is possible to prevent a test using a battery with an insufficiently charged state.

  Further, in the first embodiment, the charge state determination is a function that is not necessary during actual inspection, and the cradle is provided with a charge control IC, so that this reception state determination unit is provided on the cradle side. Thus, it is possible to reduce the size of the receiving device and reduce the manufacturing cost.

(Embodiment 2)
FIG. 8 is a block diagram showing a second embodiment of the configuration of the connection form portion shown in FIG. 8 differs from the block diagram shown in FIG. 6 in that a charging state determination unit is provided in the external device 2b to determine the charging state of the battery 17. Normally, such a receiving device 2 uses a rechargeable dry battery such as a lithium battery to monitor the remaining battery voltage (hereinafter referred to as “residual voltage”), and this residual voltage is constant. A power supply voltage monitoring circuit is provided to prevent the receiving device from being turned on when the value is reached. The charge state determination unit 19 according to this embodiment uses the power supply voltage monitoring circuit to connect the external device 2b to the cradle 30 and connect it, that is, the battery 17 that is being charged or in a fully charged state. The remaining voltage is monitored to determine whether or not charging is complete.

  When the remaining voltage of the battery 17 is less than a certain value, the control unit C performs communication control of the communication unit 31 and performs communication with the display device 4 without responding to a communication request from the display device 4. If not permitted and the remaining voltage of the battery 17 reaches a certain value, communication control of the communication unit 31 is performed so that communication is possible in response to a communication request from the display device 4.

  Thus, in this embodiment, since the state of charge of the battery is determined using the existing power supply voltage monitoring circuit in the receiving device, the same effects as in the first embodiment can be obtained, and the circuit of the receiving device can be obtained. Even if the new function according to this embodiment is provided without increasing the scale, the circuit of the receiving apparatus can be constructed in the same occupied space as in the prior art.

(Embodiment 3)
By the way, when communication for initializing the receiving device 2 is performed in a state where the external device 2b of the receiving device 2 is mounted on the cradle 30 and the charger 32 and the battery 17 are connected, before that, Even if the charging is completed, if the remaining voltage of the battery 17 is equal to or lower than a certain value using electric power for this communication, the controller C may determine that charging is in progress again. Therefore, in the third embodiment, in order to solve this problem, once charging is completed, the battery 17 is always charged from the commercial power source unless the external device 2b is removed from the cradle 30, The control unit C determines that the charging of the battery 17 has been completed, and sets the communication control operation.

  Therefore, in this embodiment, a detection function for detecting whether or not the external device 2b is attached to the cradle 30 (charger 32) is provided. This detection function can be configured similarly to the antenna connection detection unit 21 shown in FIG. 4, for example. That is, the charging terminal 17a of the external device 2b has a cradle connection detection unit, and also has a similar cradle connection detection unit for the other connection terminals 18a. The connecting portion of the cradle 30 with which the charging terminal 17a abuts connects the power line LB and the ground line (corresponding to the ground line LG in FIG. 4) to the charging terminal 17a and branches and outputs this ground line. The charging terminal 17a is connected to the receiving circuit 11 by switching the power source line LB as it is to the switching unit and switching based on a signal instructing switching (corresponding to the signal S5 in FIG. 4).

  On the other hand, one of the ground wires is grounded as it is, and the other of the ground wires is connected to the constant voltage source VDD. When the charging terminal 17a is connected to the connection part of the cradle 30, the voltage signal from the constant voltage source VDD flows to one of the ground wires, so that the voltage signal (corresponding to the signal S6 in FIG. 4) is an external control. When the charging terminal 17a is not connected to the connection part of the cradle 30 without being output to the selection control part C1 of the part C, the voltage signal from the constant voltage source VDD is directly selected as a signal (corresponding to the signal S6 in FIG. 4). It is output to the control unit C1. Therefore, the selection control unit C1 can determine whether or not the charging terminal 17a is connected to the connection unit of the cradle by detecting the presence or absence of this voltage signal. By providing a similar detection unit corresponding to the connection terminal 18a, the selection control unit C1 can determine whether or not the terminals 17a and 18a are connected. As a result, the external device 2b is connected to the cradle 30. It is possible to determine whether it is attached. In addition, the control unit C determines whether to permit communication with the display device 4 by setting a flag indicating communication permission.

  Next, the communication control operation of the receiving apparatus 2 according to this embodiment will be described based on the flowchart of FIG. Here, the communication control operation in the case of the configuration shown in FIG. 6 will be described. In FIG. 9, when the previous investigation is completed (step 201) and the external device 2b of the receiving device 2 is placed on the cradle 30, the control unit C defeats the communication permission flag and resets the communication permission. (Step 202), the battery 17 is charged by the charger 32 of the cradle 30 (Step 203). Then, the control unit C determines whether or not the charging state K determined by the charging state determination unit 33 is equal to or higher than a preset reference charging state K0 (step 204).

  Here, when the state of charge K of the battery 17 is less than the reference state of charge K0, the control unit C controls the communication unit 31 so as not to respond to the communication request from the display device 4, and at step 203, Continue charging. When the charging state K of the battery 17 reaches the reference charging state K0, the control unit C sets a communication permission flag (step 205), and after enabling the communication with the display device 4, A charger attachment determination is made as to whether or not the external device 2b is attached to the cradle 30 (charger 32) (step 206).

  Here, when the external device 2b is detached (detached) from the cradle 30, the communication permission flag is reset to reset the communication permission (step 207), and the external device 2b is attached to the cradle 30. In the case of (attachment), it is determined whether the communication permission has been reset (step 208).

  Here, when the communication permission is reset, the process returns to step 203 to charge the battery 17, and when the communication permission flag is set and the communication permission state is set, the communication request from the display device 4 is performed. After the communication unit 31 is controlled to respond to the request, the communication is permitted and the initial setting such as the registration of the inspection ID is performed (step 209), the external device 2b is removed from the cradle and the new inspection can be started. (Step 210).

  As described above, in this embodiment, the state of charge of the battery is monitored, the attachment / detachment state of the receiving device from the cradle is detected, and communication is performed when the receiving device is removed from the cradle. Is not allowed and the receiver is still attached to the cradle, the receiver can be initialized and data communication can be performed. The inspection using an insufficient battery can be prevented and communication control for finer initial settings can be performed.

(Embodiment 4)
FIG. 10 is a flowchart illustrating another communication control operation for solving the problem described in the second embodiment. In FIG. 10, in order to determine the charging state of the battery 17, for example, a first reference charging state K1 indicating a charging state close to full charging and a charging state capable of performing data communication with the display device 4 are illustrated. When the reference charge state K2 of 2 is set and the battery 17 reaches the first reference charge state K1, data communication is possible until the charge state of the battery falls below a certain value of the second reference charge state K2. Therefore, the control unit C determines that the charging of the battery 17 has been completed, and sets the communication control operation.

  That is, in FIG. 10, when the previous investigation is completed (step 301) and the external device 2b of the receiving device 2 is placed on the cradle 30 (step 302), the battery 17 is charged by the charger 32 of the connected cradle 30. Is charged (step 303). Then, the control unit C determines whether or not the charging state K determined by the charging state determination unit 33 is equal to or higher than a first reference charging state K1 set in advance (step 304).

  Here, when the state of charge K of the battery 17 is less than the reference state of charge K1, the control unit C controls the communication unit 31 and does not respond to the communication request from the display device 4; Continue charging. When the state of charge K of the battery 17 has reached the first reference state of charge K1, the control unit C determines that the state of charge K determined by the state of charge determination unit 33 is the second preset state. It is determined whether or not the reference charging state K2 has been reached (step 304).

  Here, when the state of charge K of the battery 17 is less than the reference state of charge K2, the control unit C sets a communication permission flag, resets the communication permission (step 306), and then displays on the display unit 14. A charge request display is performed (step 307), and the control operation is terminated. When the charging state K of the battery 17 reaches the reference charging state K2, a communication permission flag is set (step 308) to enable communication with the display device 4, and then the current display device 4 It is determined whether communication is in progress (step 309).

  Here, when the receiving device 2 is not communicating with the display device 4, the process returns to step 305 to determine whether or not the charging state K of the battery 17 has reached the second reference charging state K 2, and the display device 4. If communication is being performed, initial settings such as registration of the examination ID transmitted from the display device 4 are performed (step 310).

  Thus, in this embodiment, the battery is charged in two charging states: a first reference charging state that is close to full charging and a second reference charging state that allows data communication with the display device. Even if the state of charge of the battery does not satisfy the first reference charge state, if the second reference charge state is reached, the receiver can be initialized, and the second reference charge state Since it will not enter the charged state unless it becomes below, it is possible to prevent the inspection using a battery with insufficient charged state as in the first embodiment, and to perform communication control for finer initial settings. It can be carried out. Further, in this embodiment, each time the communication with the display device, the determination of the charging state of the battery is determined to be a charging state near the set reference charging state, or determined to be a charging completion state, It is also possible to prevent the determination result from fluctuating on the border line.

  In the above embodiment, the state of charge of the battery is displayed by the display on the display unit. However, the present invention is not limited to this, and the battery can be charged together with this display or alone using, for example, a speaker. It is also possible to make a warning sound or play a sound when necessary. It is also possible to provide visual notification by providing a plurality of LEDs that emit different colors in the receiving device and changing the color display or blinking during charging. Furthermore, this receiving device can be configured to have a vibrator function, and when the above charging is required, the vibrator can be activated to notify a doctor or the like.

1 is a schematic diagram illustrating an overall configuration of a wireless in-vivo information acquiring system including a receiving apparatus according to a first embodiment. It is a schematic diagram which shows the outline of the external appearance of the receiver shown in FIG. Similarly, it is a block diagram which shows the structure of a receiver. It is a block diagram which shows the structure of the connection part containing an example of the antenna connection detection part in a changeover switch. It is a block diagram which shows Embodiment 1 of the connection form of the receiver shown in FIG. 1, and a display apparatus. It is a block diagram which shows the structure of the connection form part shown in FIG. It is a flowchart for demonstrating the operation | movement of communication control of the external device shown in FIG. It is a block diagram which shows Embodiment 2 of the structure of the connection form part shown in FIG. 14 is a flowchart of Embodiment 3 for explaining an operation of communication control of an external device. Similarly, it is the flowchart of Embodiment 4 for demonstrating the operation | movement of communication control of an external device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Subject 2 Reception apparatus 2a Reception jacket 2b External apparatus 3 Capsule endoscope 4 Display apparatus 6 Battery pack 11 Reception circuit 12 Signal processing circuit 13 Memory | storage part 14 Display part 15 Sample hold circuit 16 A / D conversion part 17 Electric power supply Part (battery)
17a charge terminal 18 interface unit 18a connection terminal 19 charge state determination unit 21 antenna connection detection unit 30 cradle 31 communication unit 32 charger 33 charge state determination unit A1 to An receiving antenna C control unit C1 selection control unit CON connection unit CON1 CONn connector LB power line LG ground line LS signal line SC switching control unit SW switching switch SW1 switching unit

Claims (4)

In a receiving apparatus having an antenna capable of receiving a radio signal transmitted from a transmitting apparatus introduced into a subject and having a chargeable / dischargeable battery as a driving power source,
Determining means for determining the state of charge of the battery;
Communication control means for controlling communication with other devices for performing initial setting of the receiving apparatus related to the examination of the subject based on the determination result of the determination means;
A receiving apparatus comprising:   The communication control means performs the communication in response to a communication request from the other device when the determination result by the determination means indicates that the state of charge of the battery has reached a state of charge greater than or equal to a predetermined value. The receiving apparatus according to claim 1, wherein permission is provided. The receiving device includes a charger for charging the battery.
The receiving apparatus according to claim 1, further comprising: the determination unit provided in the charger and outputting the determination result to the communication control unit. The receiving device includes notification means for notifying the state of charge of the battery.
The receiving apparatus according to claim 1, further comprising:

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