JP2014022999A - Transmitter and receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique that enables, even when a plurality of medical devices are installed in the same space, more medical devices to perform radio communication by preventing occurrence of crosstalk.SOLUTION: In a radio video transmission system 10, a video transmission part 14 of a processor 1 that transmits a medical image to an opposing monitor 2 in a radio manner transmits a wireless video signal. A control transmission/reception part 16 obtains a radio state of another device in the same space. A millimeter wave radar part 17 detects a physical relationship with the other device in the same space using a millimeter wave. A radio output control part 18 analyzes a radio state in the same space with reference to information obtained at each of the control transmission/reception part 16 and the millimeter wave radar part 17 and adjusts radio output of the video transmission part 14 so that there occurs no crosstalk with radio communication by the other device.

Description

  The present invention relates to a transmission device and a reception device that transmit and receive medical images wirelessly.

  As an alternative to a conventional endoscope that is wired via a light guide cable or a scope cable, there is a wireless endoscope that does not require a cable connection. When a wireless endoscope is used, the acquired video signal can be transmitted and received via radio. In wireless transmission of a video signal, a signal transmission device and a reception device use a predetermined frequency.

  With regard to a wireless endoscope, for example, when a video signal of an observation image obtained by an endoscope is transmitted wirelessly to a receiving device, a high-frequency output output from an electric scalpel device used around the endoscope is used. A technique for controlling is disclosed (for example, Patent Document 1).

In addition, regarding a wireless endoscope, a technique for giving a warning when the distance between the imaging unit and the display screen surface of the monitor unit is within a predetermined value is also disclosed (for example, Patent Document 2).
Also, in a capsule endoscope system, a technique in which a receiving device attached to a belt or the like carried by a patient wirelessly receives image data from a capsule endoscope or exchanges image data with a processor. It is disclosed (for example, Patent Document 3).

JP 2001-46334 A JP 2009-233172 A JP 2008-237639 A

When video signals are transmitted via radio using a device such as a wireless endoscope, the following problems occur due to the characteristics of radio transmission.
For example, when the same frequency is used in a plurality of devices, interference may occur and transmission errors may increase. Also, if you try to set the operating frequency so that there is no overlap between each device, the number of devices that can be used in the same space is limited because the frequency that can be used is limited depending on how each device is arranged. It will be restricted.

  An object of the present invention is to provide a technology that enables more medical devices to perform wireless communication by preventing the occurrence of interference even when a plurality of medical devices are arranged in the same space. And

  According to an aspect of the present invention, a transmitting device that wirelessly transmits a medical image toward a receiving device that is opposite to the wireless transmitting device transmits a wireless video signal, and wirelessly communicates with other communication devices in the same space. From the control transmitter / receiver that acquires the state, the detection unit that detects the positional relationship with other communication devices in the same space using millimeter waves, and the information acquired in each of the control transmitter / receiver and the detector, And an adjustment unit that analyzes a wireless state of the same space and adjusts a wireless output of the video transmission unit so as not to cause interference with wireless communication of another communication device.

  According to another aspect of the present invention, a transmission device that wirelessly transmits a medical image, and a control that acquires a wireless state of a video transmission unit that transmits a wireless video signal and another communication device in the same space. A wireless unit in the same space is obtained from information acquired in the transmission / reception unit, a detection unit that detects a positional relationship between the communication device and another communication device using the millimeter wave, and the control transmission / reception unit and the detection unit. Reception for receiving a medical image wirelessly from a transmission device that analyzes a state and includes an adjustment unit that adjusts the wireless output of the video transmission unit so as not to cause interference with wireless communication of another communication device An apparatus comprising: a video receiving unit that receives a wireless video signal; and a control receiving unit that transmits a radio state of the own device with respect to a radio signal transmitted from the control transmission / reception unit of the transmission device. When That.

  According to the present invention, even when a plurality of medical devices are arranged in the same space, it is possible to prevent radio interference and more medical devices can perform wireless communication.

1 is a diagram illustrating a configuration of a wireless video transmission system according to a first embodiment. It is a block diagram of a processor concerning a 1st embodiment. It is a block diagram of a monitor concerning a 1st embodiment. It is a figure which shows the structural example of the internal table which the control transmission / reception part of the processor which concerns on 1st Embodiment produces | generates. It is a figure which illustrates the layout image of the device which the wireless output control part of a processor draws. It is FIG. (1) which shows the communication sequence in the radio | wireless video transmission system which concerns on 1st Embodiment. It is FIG. (2) which shows the communication sequence in the radio | wireless video transmission system which concerns on 1st Embodiment. It is a figure which shows typically the process which adjusts the radio | wireless output of a video transmission part. It is the flowchart which showed the radio | wireless output adjustment process by a processor. It is a figure which illustrates the structure of the radio | wireless video transmission system which concerns on 2nd Embodiment. It is a block diagram of a processor concerning a 2nd embodiment. It is a figure which shows the structural example of the internal table which the control transmission / reception part of the processor which concerns on 2nd Embodiment produces | generates. It is FIG. (1) which shows the communication sequence in the radio | wireless video transmission system which concerns on 2nd Embodiment. It is FIG. (2) which shows the communication sequence in the radio | wireless video transmission system which concerns on 2nd Embodiment. It is a block diagram of the transmission / reception module of the monitor which concerns on 3rd Embodiment. It is a figure explaining the method to manage the frequency of a wireless unit transmitter and a receiver in the radio video transmission system concerning a 4th embodiment. It is an example of the setting screen of the use frequency displayed on a touch panel. It is a figure which shows the structural example of the table which a system controller hold | maintains. FIG. 3 is a diagram (part 1) illustrating a state where a communication failure has occurred; FIG. 18 is a diagram illustrating a method for adjusting the frequencies of a transmitter and a receiver when the communication failure of FIG. 17 occurs in the wireless video transmission system according to the fifth embodiment. FIG. 6 is a diagram (part 2) illustrating a state in which a communication failure has occurred. FIG. 20 is a diagram illustrating a first method of adjusting the frequencies of a transmitter and a receiver when the communication failure of FIG. 19 occurs in the wireless video transmission system according to the sixth embodiment. FIG. 20 is a diagram illustrating a second method of adjusting the frequencies of a transmitter and a receiver when the communication failure of FIG. 19 occurs in the wireless video transmission system according to the sixth embodiment. It is a figure explaining the 1st method of setting a frequency in the radio video transmission system concerning a 7th embodiment. It is a figure which illustrates the information table which the system controller acquired. It is a figure explaining the 2nd method of setting a frequency in the wireless video transmission system concerning a 7th embodiment. It is a figure which shows the structural example of the information table which a server acquires.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
<First Embodiment>
FIG. 1 is a diagram illustrating a configuration of a wireless video transmission system including a transmission device and a reception device according to this embodiment. A wireless video transmission system 10 illustrated in FIG. 1 includes a processor 1 of an endoscope apparatus and a monitor 2. The processor 1 and the monitor 2 incorporate a wireless transmission device and a wireless reception device, respectively, and the processor 1 transmits an endoscope image acquired in the imaging circuit of the endoscope device to the monitor 2 via wireless.

  When the video signal is wirelessly transmitted from the video transmission unit 14 of the processor 1 to the video reception unit 21 of the monitor 2 to be connected, the processor 1 interferes with the wireless communication of another processor-monitor pair. The wireless output from the device itself is adjusted so that no problem occurs.

  In the configuration example shown in FIG. 1, the processor “a” acquires the positional relationship and the wireless state of the device within the same space including the monitor “a” with the millimeter wave radar unit 17 and the control transmission / reception unit 16. The control transmission / reception unit 16 of the processor a requests that the information indicating the wireless state of the device be transmitted to the processor a toward the device whose distance is detected by the millimeter wave radar unit 17. The monitor includes a control receiver 24, and the processor includes a control transmitter / receiver 16. The control receiver 24 or the control transmitter / receiver 16 returns a response to a request from the processor a. If the wireless output control unit 18 of the processor a determines from the information acquired in this way that interference may occur between the wireless communication of other devices in the same space, the wireless output of the video transmission unit 14 Make adjustments to suppress

  In the following, taking a wireless endoscope device as an example, a medical device (processor of the endoscope device) incorporating the wireless transmission device according to the present embodiment is configured to provide an endoscopic image or the like toward a monitor incorporating the wireless reception device. A method for wirelessly transmitting medical images will be described. However, the transmission device and the reception device according to the present embodiment are not limited to those built in a medical device or a monitor, but are externally connected to a medical device such as a wireless endoscope device or a monitor. Including.

  FIG. 2 is a block diagram of the processor according to the present embodiment. The processor 1 shown in FIG. 2 includes an operation unit 12, a control transmission / reception unit 16, a wireless output control unit 18, a millimeter wave radar unit 17, a processor main circuit 11, a video transmission unit 14, and an error rate detection unit 15.

  The processor main circuit 11 of the processor 1 includes an imaging circuit 51 and an image processing circuit 52. The processor main circuit 11 performs image processing in the image processing circuit 52 on the endoscopic image input from the imaging circuit 51 provided at the distal end of the insertion portion of the endoscope. The processor main circuit 11 executes processing such as generating a color signal for each of a plurality of color signals for generating an image.

  The operation unit 12 accepts various settings related to wireless communication and the like based on input operations by a user of the wireless video transmission system 10 such as an operator, and displays setting contents and communication status. Various settings relating to wireless communication and the like can be made by receiving input from an external device via, for example, a scope switch, a touch panel of the processor 1 main body, a panel switch of the processor 1 main body and LED (Light Emitting Diode) display, and serial communication. Do. The scope switch is provided so that an operator who performs endoscopic surgery using an endoscope can perform a setting operation from the sterilized area.

  The video transmission unit 14 includes a wireless communication management unit 41, a modulation unit 42, a memory 43, a video memory 44, a transmission antenna 45, a reception antenna 46, a demodulation unit 47, and a reception data analysis unit 48. The video transmission unit 14 performs necessary processing on the video signal input from the processor main circuit 11 and transmits the video signal wirelessly. The video transmission unit 14 receives a wireless signal from the monitor 2 for the transmitted video signal and performs necessary processing.

  The wireless communication management unit 41 manages wireless communication with the monitor 2 according to the wireless setting (used channel or the like) set via the operation unit 12. Specifically, the wireless communication management unit 41 executes wireless connection (link) processing and transaction (retransmission control) processing. Information necessary for wireless communication, for example, information such as a MAC address (Media Access Control address) of the monitor 2 as a connection destination is stored in the memory 43.

  In the embodiment, wireless modulation schemes such as QAM (Quadrature Amplitude Modulation) and QPSK (Quadrature Phase Shift Keying), and wireless transmission schemes such as polarization scheme and MIMO (Multiple Input Multiple Output) are not particularly specified. Any method can be adopted. In addition, there are also methods for avoiding errors when a wireless communication error occurs, such as frequency band change, transmission method change, retransmission control, etc., but there is no particular limitation, and any method can be adopted.

Further, the wireless communication management unit 41 controls the wireless output of the video transmission unit 14 in accordance with an instruction from the wireless output control unit 18. Regarding the wireless output control of the video transmission unit 14, the modulation unit 42 described later modulates the video signal input from the processor main circuit 11. The video memory 44 is used to store a video when the modulation unit 42 executes a modulation process.

  The transmission antenna 45 transmits the modulation signal input from the modulation unit 42 to the outside as a radio signal. In this way, the video signal for the endoscopic image is transmitted to the monitor 2 in FIG. When the monitor 2 receives the radio signal from the processor 1, the monitor 2 returns the packet including the error rate to the processor 1.

The receiving antenna 46 receives the radio signal transmitted from the monitor 2 in this way.
The demodulator 47 demodulates the radio signal received by the receiving antenna 46.

  The reception data analysis unit 48 analyzes the reception data obtained by demodulation, and notifies each unit such as the wireless communication management unit 41 and the error rate detection unit 15 of necessary information. The information notified to the wireless communication management unit 41 is information necessary for maintaining wireless communication with the monitor 2, and since this is a known technique, detailed description thereof is omitted here. The error rate detector 15 is notified of the detected error rate.

  The error rate detection unit 15 compares the error rate notified from the reception data analysis unit 48 of the video transmission unit 14 with a predetermined threshold value, and determines whether or not the error rate needs to be notified to the wireless output control unit 18. judge. When it is determined that the error rate needs to be notified, the error rate detection unit 15 notifies the wireless output control unit 18.

  The millimeter wave radar unit 17 includes an angle / beamform control unit 91, a transmission antenna 92, a reception antenna 93, a distance measurement unit 94, and a timer. In the embodiment, the millimeter wave radar unit 17 uses a phased array radar, and measures a distance from another processor or a device such as a monitor arranged around the processor 1 using the millimeter wave.

  The angle / beamform control unit 91 changes the angle of the millimeter wave radar. The transmission antenna 92 outputs a millimeter wave toward the angle set by the angle / beamform control unit 91. The receiving antenna 93 receives a reflected wave from an object arranged around the processor 1. The distance measuring unit 94 measures the arrival time of the reflected wave with respect to the output millimeter wave, that is, the time from when the millimeter wave is output via the transmitting antenna 92 until the reflected wave is received via the receiving antenna 93. The distance measuring unit 94 calculates the distance from the device based on the measured arrival time. The timer 95 is used for measuring the arrival time.

  The control transmission / reception unit 16 includes a wireless communication management unit 31, a memory 32, a modulation unit 33, a transmission antenna 34, a reception antenna 35, a demodulation unit 36, and a reception data analysis unit 37. The control transmission / reception unit 16 acquires the wireless state of another device in the same space as the processor 1.

  The wireless communication management unit 31 manages communication for acquiring the wireless state of devices in the same space in accordance with instructions from the wireless output control unit 18. Details of the information to be acquired will be described later in detail with reference to FIG. The memory 32 stores information necessary for communication for acquiring the wireless state of devices in the same space.

The operations of the modulation unit 33, the transmission antenna 34, the reception antenna 35, and the demodulation unit 36 are the same as those of the wireless communication management unit 41, respectively.
The reception data analysis unit 37 analyzes a signal input via the reception antenna 35 and the demodulation unit 36 and passes the analysis result to the wireless communication management unit 31. The wireless communication management unit 31 creates a list of other devices in the same space based on the data received from the reception data analysis unit 37 and the distance between the devices measured by changing the angle in the millimeter wave radar unit 17. The generated data is generated and stored in the memory 32. The reception data analysis unit 37 passes the data generated by the wireless communication management unit 31 to the wireless output control unit 18. Details of the data passed to the wireless output control unit 18 will be described in detail later with reference to FIG.

When receiving a signal from another processor 1, the control transmission / reception unit 18 returns the wireless state of its own device to the other processor 1.
The wireless output control unit 18 controls each unit of the processor 1 illustrated in FIG. In the present embodiment, the wireless output control unit 18 acquires the listed data from the memory 32 of the control transmission / reception unit 16 and analyzes the wireless state in the same space as the processor 1 based on the listed data. Then, the wireless output control unit 18 adjusts the wireless output of the video transmission unit 14 so that interference does not occur between the processor 1 and wireless communication of other devices in the same space.

  FIG. 3 is a block diagram of a monitor according to the present embodiment. The monitor 2 shown in FIG. 3 has a video reception unit 21, a monitor main circuit 23, a control reception unit 24, and an operation unit 22. The monitor 2 receives a video signal transmitted from the processor 1 by wireless communication, and displays it on the screen. Display medical images such as mirror images.

  The operation unit 22 receives various settings related to wireless communication with the processor 1 based on an input operation by a user of the wireless video transmission system 10 such as an operator, and displays the set contents. Various settings relating to wireless communication are performed, for example, by receiving input from an external device via the touch panel of the monitor 2 main body, similarly the panel switch and LED display of the monitor 2 main body, and serial communication.

  The monitor main circuit 23 includes an image processing circuit 71 and a display circuit 72. The image processing circuit 71 performs image processing on the video signal received from the processor 1 via the video receiving unit 21, and the display circuit 72 Display video on the screen.

  The video reception unit 21 includes a reception antenna 61, a demodulation unit 62, a reception data analysis unit 63, a wireless communication management unit 64, a memory 65, a modulation unit 66, and a transmission antenna 67. The video receiver 21 receives a wireless video signal or the like from the processor 1 and performs necessary processing, and also performs necessary processing on a signal transmitted to the processor 1 to transmit the signal wirelessly.

The receiving antenna 61 receives a radio signal transmitted from the processor 1 of FIG.
The demodulator 62 demodulates the radio signal received by the receiving antenna 61.

  The reception data analysis unit 63 analyzes data obtained by demodulation and calculates an error rate. The error rate is obtained by, for example, a sum check, CRC (Cyclic Redundancy Check) code, or the like. The received data analysis unit 63 edits the video signal of the received signals into a video format that can be received by the monitor main circuit 23 and outputs the edited video format to the monitor main circuit 23. A video format editing method will be described with reference to FIG.

  The wireless communication management unit 64 manages wireless communication with the processor 1 using a communication method set via the operation unit 22. Specifically, the wireless communication management unit 64 executes wireless connection (link) processing and transaction (retransmission control) processing. Information necessary for wireless communication, for example, information such as the MAC address of the processor 1 that is the connection destination is stored in the memory 65.

The modulation unit 66 modulates a signal to be transmitted to the processor 1.
The transmission antenna 67 transmits the modulation signal input from the modulation unit 66 to the outside as a radio signal.

  The control reception unit 24 includes a reception antenna 81, a demodulation unit 82, a reception data analysis unit 83, a wireless communication management unit 84, a modulation unit 85, and a transmission antenna 86. The control reception unit 24 returns the wireless state of the own device to the wireless signal transmitted from the control transmission / reception unit 16 of the processor 1 in FIG.

Operations of the reception antenna 81, the demodulation unit 82, the modulation unit 85, and the transmission antenna 86 are the same as those of the video reception unit 21, respectively.
When the reception data analysis unit 83 analyzes the signal received via the reception antenna 81 and the demodulation unit 82 and recognizes that it is a request from the processor 1 to transmit information about the state of wireless communication of the own device. This is transmitted to the wireless communication management unit 84.

  When the wireless communication management unit 84 recognizes a request from the processor 1 based on an input from the received data analysis unit 83, the wireless communication management unit 84 acquires the wireless state of the device itself via the wireless communication management unit 64 of the video reception unit 21. Then, the wireless communication management unit 84 performs control to transmit the acquired information to the processor 1 via the modulation unit 85 and the transmission antenna 86.

  As described above, in the wireless video transmission system 10 according to the present embodiment, the processor 1 acquires the wireless state of other devices including the opposing monitor 2 and the positional relationship with the processor 1. The processor 1 adjusts the wireless output from its own device so that interference does not occur with other devices when transmitting a video signal from the wireless state of the other device and its position relative to the processor 1. . A specific method for adjusting the wireless output from the own apparatus by generating list data including the wireless state of the devices in the same space and the positional relationship with the processor 1 will be described below.

  FIG. 4 is a diagram illustrating an example of the structure of the list data generated by the control transmission / reception unit 16 of the processor 1 according to the present embodiment. Hereinafter, the list data generated by the control transmission / reception unit 16 is referred to as an internal table.

As shown in FIG. 4, the internal table includes a device, a connection target, a use frequency, an angle, a distance, and an output level / input level.
In the device, identification information such as a device ID (IDentification) for identifying the device in response to the status request is stored. The status request is a telegram requesting the processor 1 to return its communication state to peripheral devices. In the connection target, identification information such as a device ID for identifying a device facing the device is stored. In FIG. 4 and the following description, the same reference numerals such as a, b, and c are given to indicate devices that are opposite to each other on the transmission side and the reception side.

The frequency used is stored in the used frequency. In the embodiment, a value representing a channel is stored as the use frequency.
As the angle and the distance, an angle and a distance at which the device is positioned with respect to the processor 1 are stored.

The output level / input level stores the input / output level of radio waves when the device is a transmission side device such as a processor / reception side device such as a monitor.
The wireless output control unit 18 of the processor 1 refers to the generated internal table of FIG. 4 to indicate which device is located in which direction with respect to the own apparatus and what is the input / output level of the device. Draw a layout image. This will be described with reference to FIG.

  FIG. 5 is a diagram illustrating a device layout image drawn by the wireless output control unit 18 of the processor 1. Here, the processor 1 (processor c in FIG. 4) that generated the internal table of FIG. 4 draws its own device (processor c), opposing monitor c, processor d, and monitor d among devices in the same space. Shows the layout image.

  As described above, the millimeter wave radar unit 17 obtains the angle and distance between the processor 1 (processor c) and each device, and the control transmission / reception unit 16 obtains the output level / input level of each device. Since the attenuation amount of the radio wave is determined by the distance, the wireless output control unit 18 of the processor 1 (processor c) refers to the angle, the distance, and the output level / input level of the internal table, as shown in FIG. Draw an image.

  In order to avoid communication and interference between the processor d and the monitor d, for example, the output level from the own device is set so as not to overlap with the radio wave range when the processor d performs wireless output at an output level of −20 dB. Just decide. From the layout image illustrated in FIG. 5, it can be seen that the output level from the own apparatus may be set to about −45 dB or less.

  In the embodiment, in the structure example shown in FIG. 4, the internal table also stores the connection target facing each device. Utilizing this fact, as described above, the output of the processor c is determined so that the wireless output from the processor c is not received by the monitor d and does not overlap the radio wave range from the processor d. The method for determining the output level of the device itself is not limited to this. For example, the processor c is a monitor other than the monitor c that is a connection target of the own device, and a monitor that uses the same frequency (the monitor d in the example of FIG. 4) does not receive the video transmitted by the processor c. The output of the processor c may be determined. In the example illustrated in FIG. 5, interference with the monitor d can be prevented by reducing the wireless output of the processor c to −30 dB or less.

  6A and 6B are diagrams illustrating a communication sequence in the wireless video transmission system 10 according to the present embodiment. 6A and 6B, in the wireless video transmission system 10 according to the present embodiment, when the processor 1 transmits a video signal to the monitor 2, it is connected to a device that uses the same frequency in the same space. A method for adjusting its own wireless output so that interference does not occur will be described.

  Here, as in the description of FIG. 5, a case where the processor c adjusts its own wireless output will be described as an example. In addition, the processor 1 (processor c) according to the present embodiment adjusts the wireless output between devices using the same frequency. For this reason, as in FIG. 5, in FIGS. 6A and 6B, only communication sequences with devices using the same frequency as the processor c among the devices in the same space are shown. Specifically, a communication sequence with the processor d and the monitor d in addition to the monitor c to be connected to the processor c will be described.

  First, the processor c and the processor d transmit video signals from the video transmission unit 13 in FIG. 2 to the monitor c and the monitor d, respectively, at a fixed frame period. In the initial state, the output level of the processor c is -15 dBm. Although not shown in FIGS. 6A and 6B, the processor c performs the following wireless output adjustment process while continuing to transmit the video signal from the video transmission unit 13.

  In the wireless output adjustment process, first, (1) the angle / beamform control unit 91 of the millimeter wave radar unit 17 sets an angle. Then, the millimeter wave is emitted with respect to the set angle, and the distance measuring unit 94 of the millimeter wave radar unit 17 measures the distance to the device.

  (2) The control transmission / reception unit 16 transmits a status request to the device detected by the millimeter wave radar unit 17. From the response from the device (status response), the device ID, the connection target, the used frequency, and the input level / output level, which are information for identifying the device, are acquired. (3) The control transmission / reception unit 16 receives information on the positional relationship with the device from the millimeter wave radar 17, stores the information in the internal table together with the information included in the status response, and updates the internal table. (4) The wireless output control unit 18 creates a layout image as illustrated in FIG. 5 with reference to the newly stored information in the internal table, and (5) determines whether the wireless output needs to be adjusted. The wireless output from the video transmission unit 14 of the processor c is adjusted if necessary.

  The millimeter wave radar unit 17 starts measuring the distance from the angle “0 °”. In the measurement of the angle “0 °”, the monitor c that is a connection target of the processor c is detected, and the processor c sets a wireless output suitable for communication with the monitor c of the connection target.

  Thereafter, when the angle is gradually increased, detection is performed in the order of the monitor d and the processor d. The processor c adds to the layout image in order from the detected device. In this way, the processor c determines whether or not it is necessary to adjust the wireless output of the own device in relation to the device newly added to the layout image.

  When each device is arranged as shown in FIGS. 4 and 5, the monitor d is first detected, and the monitor d is added to the layout when the processor c and the monitor c are arranged. As described above, the output level of the video signal unit 14 of the processor c is −15 dBm. On the other hand, the input level of the monitor d is −24 dBm. Here, since the monitor d cannot determine where the radio signal of −24 dBm is input, it is determined that the adjustment of the wireless output of the processor c is unnecessary in relation to the monitor d.

  Next, when the processor d is detected, the processor d is further added to the layout. The layout after the addition is as shown in FIG. The layout image of the radio wave range by the processor d in FIG. 5 can be obtained from the positional relationship between the processor d and the monitor d and the output level of the processor d. In this case, the wireless output control unit 18 of the processor c recognizes that the signal from the processor c interferes with the monitor d if the output level of the video signal unit 14 of the processor c remains −15 dBm. Therefore, the wireless output control unit 18 of the processor c adjusts the wireless output of the video transmission unit 14 of the processor c so as not to cause interference, and weakens it from −15 dBm to −45 dBm.

  FIG. 7 is a diagram schematically illustrating processing in which the processor c acquires the wireless state for each detected device in the same space and adjusts the wireless output of the video transmission unit 14 of the processor c. In FIG. 7, in order to indicate which monitor 2 in the figure is connected to the processor 1, “processor 1 c”, “monitor 1 c”, and the like are indicated.

As described with reference to FIG. 6, first, information is sequentially acquired from the connection target monitor 2 c located at the angle “0 °”, and output adjustment is performed.
Here, the processor 1 is generally capable of setting a use frequency from among a plurality of frequencies. In the embodiment, the processor 1c determines that the adjustment of the radio output is unnecessary, because no interference occurs between the processors (processors 1b and 1e in FIG. 7) for which different frequencies are set. Further, when a reflected wave does not return to the millimeter wave emitted from the millimeter wave radar unit 17 or when there is no response to the status request, it can be determined that no interference occurs with the device. The processor 1c changes the set angle of the millimeter wave radar unit 17 to a predetermined direction (the clockwise rotation direction in FIG. 7), and executes the processing illustrated in FIG. 6 for all directions from 0 ° to 360 °. Go. Thereby, the processor 1c can set the wireless output of the own apparatus so that interference does not occur with all other devices in the same space.

  FIG. 8 is a flowchart showing the wireless output adjustment process by the processor c. Here, a case where the angular resolution of the millimeter wave radar unit 17 is 5 ° is illustrated. As described in the description of the communication sequence shown in FIG. 6, the processor 1c monitors the monitor 2c at a fixed frame period at the output level determined by the wireless output adjustment processing in parallel with the wireless output adjustment processing shown in FIG. The video signal transmission process is being executed. The processor 1c periodically executes the wireless output adjustment process shown in FIG. 8 so that the video signal transmitted to the monitor 2c does not interfere with other devices.

  In the wireless output adjustment process, first, in step S1, the device detection and the wireless state at the angle “0 °” are acquired, the internal table is updated, and the layout as shown in FIG. 5 is updated from the updated internal table. Draw an image. When the necessity of adjusting the wireless output is recognized, the output level is suppressed to an appropriate value.

  In steps S2 to S4, even if the angle is changed by 5 ° and the millimeter wave is emitted from the millimeter wave radar unit 17, the reflected wave is not received. When the reflected wave is not received and the device is not detected or there is no response to the status request, no processing is performed and the processing proceeds to the next step.

In step S5, the monitor 2d is detected at an angle of 20 °. The communication sequence when the monitor 2d is detected is as described with reference to FIG.
Even after step S6, the set angle is sequentially changed in accordance with the angular resolution of the millimeter wave radar unit 17, and when a device is detected, the set angle of the millimeter wave radar unit 17, the measured distance, and the status request The internal table is updated from the information included in the response and the layout image is drawn. When the used frequency overlaps with the processor 1c, it is determined whether interference occurs, and if necessary, adjustment is performed to suppress the wireless output of the video transmission unit 14 of the processor 1c.

  As described above, according to the wireless video transmission system 10 according to the present embodiment, the processor 1 that wirelessly transmits a medical video signal such as an endoscopic image is located in the same space by the millimeter wave radar unit 17. Obtain device angles and distances with high accuracy. Then, the control transmitter / receiver 16 acquires the wireless state of the devices in the same space. The wireless output control unit 18 analyzes the wireless state of the same space from the information acquired by the millimeter wave radar unit 17 and the control transmission / reception unit 16. Then, the wireless output of the video transmission unit 14 is adjusted so that interference does not occur with the wireless communication of other devices.

  The wireless video transmission system 10 is disposed in an operating room or the like of a medical institution, and a plurality of operating rooms may be provided adjacent to each other. As described above, even if medical devices that perform a plurality of wireless communications are arranged in the same space, the wireless video transmission system 10 according to the present embodiment does not cause interference with other communication devices. The control which suppresses the radio | wireless output from an own apparatus is performed. As a result, more medical devices can perform wireless communication while preventing the occurrence of interference with other communication devices.

In an endoscopy room or the like, other devices may be arranged in a space partitioned by a curtain or a simple partition. In the present embodiment, since the processor 1 measures the distance from the device in the same space using the millimeter wave radar, even if there is a shield or the like between the device and the device, the processor 1 It is possible to detect a certain device and adjust the wireless output so that interference does not occur.
<Second Embodiment>

  In the above embodiment, the processor 1 recognizes the positional relationship with the devices in the same space by the millimeter wave radar unit 17. On the other hand, in this embodiment, the processor 1 is different in that the distance to the device is calculated from information representing the signal level included in the status response received from the device.

  Hereinafter, a method of adjusting the wireless output by the processor 1 in the wireless video transmission system 10 according to the present embodiment will be specifically described with a focus on differences from the first embodiment. In the present embodiment as well, as in the first embodiment, a wireless endoscope will be described as an example of a medical device. Similarly to the description of the above embodiment, the medical device (the processor of the endoscopic device) including the transmitting device according to the present embodiment is used for medical treatment such as an endoscopic image toward the monitor including the wireless receiving device. A method for wirelessly transmitting a video for use will be described.

  FIG. 9 is a diagram illustrating a configuration of the wireless video transmission system according to the present embodiment. Compared with the wireless video transmission system according to the above embodiment, the processor 1 does not include the millimeter wave radar unit 17, and the control transmission / reception unit 16 acquires the reception level of the signal in the device in the same space, and The difference is that the distance to the device is calculated.

The wireless output control unit 18 also acquires the angle and distance at which the device is located from the control transmission / reception unit 16 and adjusts the wireless output of the video transmission unit 14.
FIG. 10 is a block diagram of a processor according to the present embodiment. Compared with the block diagram of the processor according to the first embodiment shown in FIG. 2, it is different in that it does not have the millimeter wave radar unit 17 and further has an angle / beamform control unit 38 in the control transmission / reception unit 16.

  Similar to the above embodiment, as information representing the positional relationship between devices in the same space as the processor 1, it is necessary to recognize the angle and distance of the device 1 relative to the processor 1. In the processor 1 according to the present embodiment, the control transmission / reception unit 16 calculates and obtains the distance from the device that has returned the status response, and does not need to include a millimeter wave radar.

  For the above reason, in the present embodiment, the angle / beamform control unit 38 of the control transmission / reception unit 16 sets the angle for transmitting the status request, and the control transmission / reception unit 16 transmits and receives the status request by millimeter wave communication. Receives status responses. Thereby, when a device exists at the set angle and a response is returned, the angle of the device with respect to the processor 1 can be recognized. Also, information (angle and distance) representing the positional relationship with the device is obtained by calculating the distance to the device in the received data analysis unit 37 of the control transmission / reception unit 16 from the information representing the signal level included in the response. .

  The control transmission / reception unit 16 generates an internal table from the information included in the status response and information indicating the positional relationship with the obtained device, as in the above embodiment, and the wireless output control unit 18 generates the generated internal table. Is used to adjust the wireless output of the video transmission unit 14.

  The block diagram of the monitor 2 is the same as that in the above embodiment, and is as shown in FIG. However, in the present embodiment, when the wireless communication management unit 84 of the control reception unit 24 in FIG. 3 generates a response to the received status request, the processor 1 including the reception level of the video reception unit 21 of its own device is included. Return to.

  FIG. 11 is a diagram illustrating a structure example of an internal table generated by the control transmission / reception unit 16 of the processor 1 according to the present embodiment. The internal table shown in FIG. 11 is different from the internal table of the first embodiment shown in FIG. 4 in that it further includes a status request reception level.

  The status request reception level represents a radio wave level [dBm] when the device represented by “device” in the internal table receives a status request from the processor 1. The radio wave level when the status request is received is determined by the distance between the processor 1 and the device represented by “device”. Thus, when the processor 1 receives the status response from the device, the processor 1 obtains the distance from the device and stores various information included in the status request and the angle at the time of transmitting the status request in a predetermined location. 11 internal tables are generated.

A known technique is used as a technique for obtaining the distance from the device from the status request reception level.
Even when the internal table is generated by the above method, the layout image drawn using the internal table is the same as that of the above embodiment, as shown in FIG.

12A and 12B are diagrams illustrating a communication sequence in the wireless video transmission system 10 according to the present embodiment.
Compared with the communication sequence in the above-described embodiment shown in FIGS. 6A and 6B, the procedure for detecting a device by the millimeter wave radar unit 17 of (1) in FIGS. 6A and 6B is not included. Instead, the processor c transmits a status request by millimeter wave communication at the angle set in (2). As described above, the status response received from the device includes the status request reception level in the device. include. In step (2), the processor c calculates the distance to the device from the reception level of the status request. Other processes are the same as those in FIGS. 6A and 6B.

As described above, according to the wireless video transmission system 10 according to the present embodiment, the processor 1 uses the reception level of the device received from the device in the same space by the millimeter wave communication to communicate with the device. Find the distance. The millimeter wave radar circuit is not required, and the same effect as that of the above embodiment is obtained while having a simple configuration.
<Third Embodiment>

  In the first and second embodiments described above, the processor 1 and the monitor 2 are associated with each other in one-to-one correspondence. The image is displayed. On the other hand, in this embodiment, the monitor 2 is different in that it has not only a function as a receiver but also a function as a transmitter.

  FIG. 13 is a configuration diagram of a transmission / reception module of the monitor 2 according to the present embodiment. FIG. 13A shows a configuration when the transmission / reception module 200A controls which of the transmission circuit and the reception circuit is turned on in the monitor 2, and FIG. 13B shows transmission / reception from the outside (in the monitor 2). The structure in the case of controlling which of the transmission function / reception function of the module 200B is functioned is shown.

  A transmission / reception module 200A illustrated in FIG. 13A includes a microcomputer 201, a transmission circuit 202, a high frequency circuit 203, and a reception circuit 204. The microcomputer 201 turns on the circuit to be operated in the transmission circuit 202 or the reception circuit 204 and controls the other circuit to be off. The microcomputer 201 detects video input and video output to the transmission / reception module 200A, and determines which of the transmission circuit 202 and the reception circuit 204 is to be turned on based on this. In the embodiment, when both video input and video output are detected, video output is given priority.

The high-frequency circuit 203 can be configured to be used in common regardless of whether the transmitter circuit 202 or the receiver circuit 204 is turned on.
A transmission / reception module 200 </ b> B illustrated in FIG. 13B includes a transmission / reception circuit 205 and a high-frequency circuit 203. It is determined whether to operate the transmission / reception circuit 205 as a transmission unit or a reception unit according to control from the outside of the transmission / reception module 200B. Regardless of whether the transmission / reception circuit 205 operates as a transmission unit or a reception unit, the high-frequency circuit 205 can be used in common as in FIG.

As described above, according to this embodiment, the monitor 2 can operate not only as a receiver but also as a transmitter. In recent years, when endoscopic images are transmitted wirelessly, video signals are increasingly transmitted from the monitor 2 to which the processor 1 is connected to a stand-alone monitor. By incorporating the transmission / reception module having the configuration shown in FIG. 13 in the monitor 2, it is possible to incorporate the wireless module in the monitor in a smaller space than in the case where both the transmission module and the reception module are installed in the monitor.
<Fourth Embodiment>

  In the above-described embodiment, the processor 1 on the transmission side performs an adjustment to suppress the wireless output from its own device so that the communication with the monitor 2 on the reception side does not interfere with the communication of the other processor-monitor pair. Yes. On the other hand, the present embodiment is different in that the frequency used by the transmission device-reception device pair is managed by the system controller that is the host device.

  FIG. 14 is a diagram illustrating a method for managing the frequencies of the wireless unit transmitter and the receiver in the wireless video transmission system 10 according to the present embodiment. FIG. 14A is a diagram illustrating a configuration example of the wireless video transmission system 10 including the system controller 50 according to the present embodiment. As shown in FIG. 14A, the wireless video transmission system 10 includes a plurality of sets of a transmission side unit 95 and a reception side unit 96.

  In the example illustrated in FIG. 14, the wireless video transmission system 10 includes wireless unit transmitters (hereinafter abbreviated as transmitters) 95 a to 95 c in video sources such as a video processor 91, a room camera 92, and a recorder 93. Or connected externally. The monitors 94a to 94c incorporate wireless unit receivers (hereinafter abbreviated as receivers) 96a to 96c, or are connected externally. The system controller 50 sets the frequency used by each of the transmitters 95a to 95c and the receivers 96a to 96c, and holds information regarding the set frequency in a table. A user of the wireless video transmission system 10 such as an operator sets a frequency to be used for each of the video sources 91, 92, and 93 and the monitors 94a to 94c that are video output destinations via a touch panel or the like.

  FIG. 15 is an example of a setting screen for the used frequency displayed on the touch panel. The wireless video transmission system 10 prepares a GUI (Graphical User Interface) as illustrated in FIG. 15, and allows the user to select which video source and which output destination are associated with each other via the touch panel. .

  For example, to display the video of the video processor 91 of FIG. 14A on the monitor 94a, the user presses the button B1 representing the video processor 91 from the video source in the screen 60 of FIG. To do. Following the selection of the video source, the user presses the button B2 representing the monitor 94a from the output destination.

  When the system controller 50 recognizes such user input, the system controller 50 sets a frequency common to the transmitter 95a corresponding to the video processor 91 and the receiver 96a corresponding to the monitor 94a, and information set in a table or the like. Thereafter, the used frequencies are held in a table, and the used frequencies of the transmitters 95a to 95c and the receivers 96a to 96c are managed.

FIG. 16 is a diagram illustrating a structure example of a table held by the system controller 50.
As shown in FIG. 16, the information table for managing the frequencies used by the transmitters 95a to 95c and the receivers 96a to 96c held by the system controller 50 includes wireless unit information, connection destination information, and frequencies.

  The wireless unit information stores information for identifying the transmitters 95a to 95c and the receivers 96a to 96c. The connection destination information stores information for identifying devices to which the transmitters 95a to 95c and the receivers 96a to 96c are respectively connected.

  In the example illustrated in FIG. 16, for example, “W-TRAa” representing the transmitter 95a is the video processor 91, and therefore “CV” representing the video processor 91 is stored in the connection destination information. As for the frequency, a frequency “1.0 GHz” common to the receiver “W-RECa” associated via the touch panel of FIG. 15 is stored.

  In the operating room or the like, a plurality of devices are arranged, and when the transmitter 95 and the receiver 96 are associated with each other via the touch panel, the device displayed on the touch panel screen is the actual surgery. There may be a case where it is desired to determine a video output destination by confirming where it is placed in the room. In such a case, by providing an LED or the like for each device, when the transmitting device and the receiving device are associated with each other through the touch panel, the device displayed on the screen is placed in any place in the operating room. It can be set as the structure which can be confirmed.

  FIG. 14B is a diagram schematically illustrating a configuration in which each device is provided with an LED. For example, when the user presses the button B1 in FIG. 15, the LED 97a provided in the transmitter 95a connected to the video processor “CV” 91 is turned on. This makes it easier for the user to display the images from the desired video sources 91, 92, 93 on the desired monitor 94.

For example, as in the above example, even if the video processor 91 and the monitor 94a are associated with each other, depending on the actual arrangement of each device, the video of the video processor 91 should be displayed on the monitor 94b. It is also possible that there are needs of the elderly. According to the wireless video transmission system 10 according to the present embodiment, it is possible to easily switch to a desired monitor without using a device such as a video matrix switcher box. As described above, according to the present embodiment, while reducing the introduction cost and product space, interference and interference between a plurality of devices are prevented, and an image from a desired device is transmitted to a desired monitor. Can be displayed.
<Fifth Embodiment>

  Even when the frequency used by the transmitter / receiver is managed by the system controller 50, when the wireless video transmission system 10 is arranged and used in an operating room or the like, other communication units not under the system controller 50 are used. Interference and interference may occur between the two. In such a case, the system controller 50 according to the present embodiment appropriately switches the frequencies of the subordinate transmitters and receivers.

  FIG. 17 is a diagram illustrating a state where a communication failure has occurred. Here, a case where the operating table control wireless transmission unit 3 and the reception unit 4 are used together with transmitters 95a to 95c and receivers 96a to 96c managed by the system controller 50 is illustrated.

  The system controller 50 does not manage the frequency of the operating table transmitting unit 3 and receiving unit 4 under its own apparatus. For this reason, the fixed frequency set in the transmission unit 3 and the reception unit 4 may overlap with the transmitter 95 and the receiver 96 under the system controller 50. In the example illustrated in FIG. 17, the frequency “1.2 GHz” is set in the transmitter 95 c and the receiver 96 c, and the frequencies overlap with those of the transmission unit 3 and the reception unit 4 for the operating table. It is assumed that an abnormality is detected in communication between the transmitter 95c and the receiver 96c due to interference with the transmission unit 3 and the reception unit 4.

  18 is a diagram for explaining a method of adjusting the frequencies of the transmitter 95 and the receiver 96 under the system controller 50 when the communication failure shown in FIG. 17 occurs in the wireless video transmission system 10 according to the present embodiment. It is.

  First, (1) when an abnormality in communication between the transmitter 95c and the receiver 96c is detected, a notification to that effect is sent from the transmitter 95c and the receiver 96c to the system controller 50. When the system controller 50 receives the notification that the communication abnormality is detected, the system controller 50 transmits an instruction to switch the use frequency to the transmitter and the receiver in which the communication abnormality is detected. In the example shown in FIG. 18, “1.2 GHz” is set when an abnormality is detected. The system controller 50 refers to the information table illustrated in FIG. 16, sets a value that does not overlap with other transmitters and receivers to the frequency after switching, and transmits the transmitter 95 c and the receiver 96 c in which an abnormality has been detected. Switch the frequency of use.

  As a result of the above procedures (1) and (2), it is assumed that the use frequency “1.3 GHz” is set in the transmitter 95c and the receiver 96c. In this case, the frequency has already been switched to a frequency that does not overlap with the frequency used by the transmission unit 3 or the reception unit 4. If a communication abnormality is detected in the wireless video transmission system 10 even after frequency switching, the same frequency switching process as described above is repeated until no communication abnormality is detected.

As described above, according to the wireless video transmission system 10 according to the present embodiment, the frequency of the transmitter 95 and the receiver 96 is appropriately set even when the frequency overlaps with the device using the fixed frequency by the system controller 50. To effectively avoid interference and interference.
<Sixth Embodiment>

  In the fifth embodiment, when a communication abnormality is detected in the transmitter 95 and the receiver 96 managed by the system controller 50, the frequencies of the transmitter 95 and the receiver 96 in which the communication abnormality is detected. Is switched to another frequency. In contrast, in the present embodiment, when a communication abnormality is detected in a communication unit that is not managed under the system controller 50, the system controller 50 switches the frequencies of the transmitter 95 and the receiver 96 that are managed. To avoid interference and interference.

  FIG. 19 is a diagram illustrating a state where a communication failure has occurred. Similar to the description of the fifth embodiment, the operating table control wireless transmission unit 3 and the reception unit 4 are used together with transmitters 95a to 95c and receivers 96a to 96c managed by the system controller 50. The case where it does is illustrated.

  Similarly to the example of the fifth embodiment, the fixed frequency set in the transmission unit 3 and the reception unit 4 is “1.2 GHz”, and the frequency set in the transmitter 95c and the receiver 96c. It shall be duplicated. However, here, a case where a communication abnormality is detected on the transmission unit 3 side and the reception unit 4 side of the operating table due to overlapping frequencies is shown.

  FIG. 20 shows a first method for adjusting the frequencies of the transmitter 95 and the receiver 96 under the system controller 50 when the communication failure shown in FIG. 19 occurs in the wireless video transmission system 10 according to the present embodiment. It is a figure explaining.

  In the first method, first, (1) when an abnormality in communication between the transmission unit 3 and the reception unit 4 is detected, a notification to that effect is sent from the transmission unit 3 or the reception unit 4 to the system controller 50. The system controller 50 does not recognize the frequency used by the transmission unit 3 or the reception unit 4. However, the frequency set in the subordinate transmitters 95a to 95c and the receivers 96a to 96c is recognized from the information table described above with reference to FIG. For this reason, the system controller 50 determines that one of the frequencies stored in the information table overlaps with the frequency used by the transmission unit 3 or the reception unit 4, and the subordinate transmitter 95 and receiver 96 Change the frequency.

  Specifically, (2) the frequency set in all transmitters 95 managed in the information table is changed to a value different from the frequency currently stored in the information table. Further, (3) similarly for the receivers 96, the frequencies of all the receivers 96 are changed to values corresponding to the transmitters 95 after switching. Then, it is determined whether a communication abnormality is detected including the transmission unit 3 and the reception unit 4.

  In the example shown in FIG. 20, the transmitter 95a and the receiver 96a are changed from 1.0 GHz to 2.0 GHz, the transmitter 95b and the receiver 96b are changed from 1.1 GHz to 2.1 GHz, the transmitter 95c and the receiver 96c. Is transmitted to change the frequency of each unit by transmitting an instruction to change from 1.2 GHz to 2.2 GHz. As described above, the system controller 50 recognizes which frequency is set for each transmitter 95 and receiver 96 when a communication abnormality is detected. Using this, the system controller 50 can set a band that does not overlap with the frequency of the transmission unit 3 and the reception unit 4 of the operating table for the frequency after switching. For this reason, it is expected that interference, interference, and the like can be avoided by one frequency change process.

  FIG. 21 shows a second method of adjusting the frequencies of the transmitter 95 and the receiver 96 under the system controller 50 when the communication failure shown in FIG. 19 occurs in the wireless video transmission system 10 according to the present embodiment. It is a figure explaining.

  In the second method, in (1), similarly to the first method shown in FIG. 20, the system controller 50 receives a notification from the transmission unit 3 and the reception unit 4 that a communication abnormality has been detected.

  Upon receiving the notification, in (2), the system controller 50 changes the frequencies of the pair of transmitters 95 and receivers 96 (in FIG. 21, transmitters 95a and receivers 96a) to unused values. Then, it is determined whether or not a communication abnormality is no longer detected. In the example shown in FIG. 21, since the frequency overlap has not yet been resolved, even if the frequency is changed between the transmitter 95a and the receiver 96a, the communication failure is still notified to the system controller 50.

  Therefore, the system controller 50 sets the frequencies of the transmitter 95 and the receiver 96 (transmitter 95b and receiver 96b in FIG. 21) different from those in the previous procedure (2) in (3). It is changed to a value and it is determined whether or not communication abnormality is no longer detected. At the same time, the transmitter 95a and the receiver 96a whose frequencies are changed in the procedure (2) are returned to the original frequencies. In the example shown in FIG. 21, even if the frequencies of the transmitter 95b and the receiver 96b are changed, a communication failure is still notified to the system controller 50.

  In (4), the system controller 50 changes the frequencies of a further different set of transmitter 95 and receiver 96 (in FIG. 21, transmitter 95c and receiver 96c) to unused values, and detects a communication abnormality. Determine if it is no longer being used. At the same time, the transmitter 95b and the receiver 96b whose frequencies are changed in the procedure (3) are returned to the original frequencies. In the example shown in FIG. 21, the frequency overlapping with the transmission unit 3 and the reception unit 4 of the operating table is switched to a different value by the procedure (4), and thereafter no communication abnormality is detected.

According to the second method, only one set of frequencies is changed, and if the communication abnormality is not solved, the set is returned to the original frequency and the frequency of the other set is changed. By setting it as such a structure, the same frequency as the time of the previous frequency change can be used also about the group which changes a frequency next. Therefore, there is an advantage that a large number of necessary frequencies (frequency after change) are not required.
<Seventh Embodiment>

  In the fourth to sixth embodiments, the system controller 50 is arranged in the wireless video transmission system 10 to manage the frequencies of the transmitter 95 and the receiver 96 in the wireless video transmission system 10. By the way, the wireless video transmission system 10 includes a video source provided in a certain operating room and a monitor 94 as an output destination thereof. A medical institution where the wireless video transmission system 10 is installed often has a plurality of operating rooms. Therefore, in the wireless video transmission system 10 according to the present embodiment, the frequency is adjusted so that the frequency to be used does not overlap with devices in other systems arranged in an adjacent operating room or the like.

  FIG. 22 is a diagram illustrating a first method for setting a frequency in the wireless video transmission system 10 according to the present embodiment. In the first method, the system controller 50 sets the frequencies of the subordinate transmitters 95 and receivers 96 so that the frequencies do not overlap with other wireless video transmission systems.

  In FIG. 22, it is assumed that the wireless video transmission system 10b in the adjacent operating room 2 is activated when the wireless video transmission system 10a in the operating room 1 is activated first. Hereinafter, a method for setting the frequencies of the transmitter 95 and the receiver 96 under the control of the system controller 50b of the wireless video transmission system 10b in such a case will be described with reference to FIG.

  The system controller 50b in the operating room 2 is connected to another wireless video transmission system 10 (wireless video transmission system 10a in FIG. 22) via a network such as a hospital network. Then, an information table held by the system controller 50a is acquired from the system controller 50a of the wireless video transmission system 10a via a network such as a hospital network.

  FIG. 23A is a diagram illustrating an information table acquired by the system controller 50b. Here, for simplicity of explanation, only the wireless unit information and the frequency are described in the information table. However, naturally, the information table may include information for identifying the connection destination device as in the table structure shown in FIG. Good.

  The system controller 50b refers to the acquired information table shown in FIG. 23A, determines the frequencies to be assigned to the transmitters 95d to 95f and the receivers 96d to 96f managed by the own device, and sets them in the information table. Memorize the frequency.

  FIG. 23B is a diagram illustrating an information table generated by the system controller 50b. As shown in FIG. 23B, the system controller 50b assigns a frequency different from the frequency stored in FIG. 23A to the transmitter 95 and the receiver 96 managed by the own device. This avoids the occurrence of interference and interference between the wireless video transmission system 10a and the wireless video transmission system 10b respectively disposed in the adjacent operating rooms.

  FIG. 24 is a diagram illustrating a second method for setting a frequency in the wireless video transmission system 10 according to the present embodiment. In the second method, a server is provided above the wireless video transmission system 10, and each wireless video is transmitted by the server so that the frequency does not overlap between the transmitter 95 and the receiver 96 in the other wireless video transmission system. The frequency used in the transmission system 10 is adjusted.

  As shown in FIG. 24, a server 100 is provided above the wireless video transmission system 10a and the wireless video transmission system 10b. First, (1) the server 100 receives information tables held by the respective system controllers from the system controllers 50a and 50b of the wireless video transmission systems 10a and 10b. The system controller 50 periodically transmits an information table about the subordinate transmitter 95 and receiver 96 held in the own device to the server 100 at intervals of, for example, 5 seconds.

  FIG. 25 is a diagram illustrating a structure example of an information table acquired by the server 100. Among these, FIG. 25A shows an example of the structure of an information table that the server 100 acquires from the system controllers 50a and 50b in the procedure (1).

  Next, (2) the server 100 refers to the information table received from the system controllers 50a and 50b, and determines the presence or absence of the transmitter 95 and the receiver 96 having the same frequency. If there is an identical frequency, the system controller 50 including the transmitter 95 and the receiver 96 is requested to change the frequency. At this time, for example, the information table is searched to acquire an unused frequency, and a request is made to set the obtained unused frequency. In the example shown in FIG. 25A, the frequency of the transmitter 95b and the receiver 96b in the information table acquired from the system controller 50a, and the frequency of the transmitter 95e and the receiver 96e in the information table acquired from the system controller 50b. Are consistent at “1.1 GHz”. The server 100 has the frequency of the subordinate transmitter 95 and receiver 96 (transmitter 95e and receiver 95e in the example of FIG. 24) for any one system controller 50 (system controller 50b in the example of FIG. 24). Is changed to an unused frequency “1.4 GHz”.

  (3) Upon receiving the above instruction from the server 100, the system controller 50 changes the frequencies of the subordinate transmitter 95 and receiver 96 according to the instruction. The method for changing the frequencies of the receiver 95 and the receiver 96 is the same as that in the above embodiment. At the same time, the system controller 50 updates the information table held in its own device. In the example of FIG. 24, the system controller 50b that receives the instruction from the server 100 changes the frequencies of the transmitter 95e and the receiver 96e to “1.4 GHz”.

Thereafter, the server 100 periodically acquires an information table from each system controller 50 and manages the frequency.
FIG. 25B is a diagram illustrating a structure example of the updated information table. Frequency duplication that has occurred between the wireless video transmission system 10a and the wireless video transmission system 10b is eliminated. By the server 100 managing the frequency by the above method, the frequency overlaps with the newly activated wireless video transmission system 10 to avoid occurrence of interference and interference.

  In addition to the above, the present invention can be variously improved and changed without departing from the gist of the present invention. For example, some components may be deleted from the overall configuration shown in each of the above-described embodiments, and different components in each embodiment may be combined as appropriate.

1 Processor 2 Monitor 10 Wireless Video Transmission System 50 System Controller 95 Transmitter 96 Receiver 100 Server

Claims (7)

A transmitting device that wirelessly transmits a medical image toward an opposing receiving device,
A video transmission unit for transmitting a wireless video signal;
A control transmission / reception unit that acquires the wireless state of another communication device in the same space;
Using a millimeter wave, a detection unit that detects a positional relationship with another communication device in the same space;
From the information acquired in the control transmission / reception unit and the detection unit, the wireless state of the same space is analyzed, and the wireless output of the video transmission unit is prevented from causing interference with the wireless communication of other communication devices. A transmission apparatus comprising: an adjustment unit that adjusts The adjustment unit is
The other information obtained from the input / output level of the signal of the other communication device and the detection result of the detection unit in association with the information for identifying the communication device in the same space from the information acquired in the control transmission / reception unit Store the distance and angle with the communication device in the storage unit,
The wireless output of the video transmission unit is adjusted with reference to the storage unit so as to be out of a range of wireless input and wireless output of a communication device other than the opposing receiving device. Transmitter. The adjustment unit draws a radio wave output image of the communication device in the same space with reference to the storage unit, and determines a wireless output value of the video transmission unit from the drawn radio wave output image. The transmission device according to claim 2. The adjustment unit stores the frequency used by the other communication device in the storage unit in association with the information for identifying the communication device based on the information acquired in the control transmission / reception unit, and the other communication device. The transmission apparatus according to claim 3, wherein when the frequency used by matches the frequency used for communication with the opposite receiving apparatus, the wireless output adjustment processing of the video transmission unit is executed. The transmission device according to claim 4, wherein the detection unit includes a millimeter wave radar unit that measures a distance from the communication device in the same space based on a reflected wave with respect to the transmitted millimeter wave. The detection unit performs millimeter wave communication, and the distance from the other communication device is determined based on a reception level at the other communication device included in a radio signal from the other communication device acquired by the control transmission / reception unit. The transmitter according to claim 4, wherein the transmitter is calculated. A transmission device that wirelessly transmits a medical image, a video transmission unit that transmits a wireless video signal, a control transmission / reception unit that acquires a wireless state of another communication device in the same space, and a millimeter wave, The detection unit that detects a positional relationship with another communication device in the same space, and the wireless state of the same space is analyzed from the information acquired in each of the control transmission / reception unit and the detection unit, and the wireless of another communication device A receiving device that wirelessly receives a medical image from a transmitting device that includes an adjustment unit that adjusts the wireless output of the video transmission unit so as not to cause interference with communication,
A video receiver for receiving wireless video signals;
A receiving apparatus comprising: a control receiving section that transmits a radio state of the own apparatus to a radio signal transmitted from the control transmission / reception section of the transmitting apparatus.