JP2010025660A - Radio wave state detection device, radio wave state detection method, and radio wave state detection program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a radio wave state detection device capable of notifying a user of a radio wave state in an environment in which a receiving device is placed in a simple manner. <P>SOLUTION: The radio wave state detection device is applied to a receiving device, and detects the radio wave state in the receiving device. Specifically, a radio wave state detection means detects the radio wave state in a place in which the receiving device is placed, on the basis of a signal processed by a processing part in the receiving device when a transmission device and the receiving device are in a non-communication state. A display means displays information corresponding to the detected radio wave state, thereby notifying the user of the radio wave state in the environment in which the receiving devices placed in a simple manner so that the receiving device is optimally installed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a technical field for detecting a radio wave state in a receiving device that receives a radio signal transmitted from a transmitting device.

  This type of technique is proposed in Patent Documents 1 to 5. Patent Document 1 proposes detecting a deterioration in communication status and notifying the user of the status. Patent Document 2 proposes that the interference wave of the reception channel and its adjacent channel is specified and the content of the viewing disturbance is notified by displaying the interference wave profile on the monitor unit. Patent Document 3 proposes detecting interference due to an interference wave and displaying the state. Patent Document 4 proposes to notify the transmission status of video and audio data by TV OSD or audio. Patent Document 5 proposes that a radio receiver with an AGC circuit (automatic gain control circuit) detects an interference wave and adjusts an input level according to the level. In addition, techniques related to the present invention are proposed in Patent Documents 6 and 7.

JP-A-8-8802 Japanese Patent Laid-Open No. 2004-236076 JP 2005-348338 A JP 2004-336729 A JP 2002-111522 A JP-A-9-102766 JP 2001-267998 A

  However, with the techniques described in Patent Documents 1 to 7 described above, it is difficult to simply inform the user of the radio wave condition in the receiving device and guide the user to install the receiving device in a position where the radio wave environment is good. It was.

  Examples of the problem to be solved by the present invention are as described above. The present invention provides a radio wave state detection device, a radio wave state detection method, and a radio wave state capable of optimally installing a device by simply notifying a user of the radio wave state of an environment where a receiving device is placed. It is an object to provide a detection program.

  In the first aspect of the present invention, the radio wave state detection device applied to the reception device having a processing unit that receives a radio signal transmitted from the transmission device and performs processing on the radio signal is When the receiving device is in a non-communication state, a radio wave state detecting unit that detects a radio wave state at a place where the receiving device is installed based on a signal processed by the processing unit, and the radio wave state detecting unit detects Display means for displaying information corresponding to the radio wave condition.

  In a thirteenth aspect of the present invention, a radio wave state detection method performed in a receiving device that includes a processing unit that receives a radio signal transmitted from a transmitting device and performs processing on the radio signal includes: When the receiving device is in a non-communication state, the radio wave state detecting step for detecting the radio wave state at the installation location of the receiving device based on the signal processed by the processing unit, and the radio wave state detecting step detects the radio wave state A display step of displaying information corresponding to the radio wave condition.

  In a fourteenth aspect of the present invention, a radio wave state detection program executed by a receiving device that has a processing unit that receives a radio signal transmitted from a transmitting device and performs processing on the radio signal includes: A radio wave state detecting means for detecting a radio wave state at a place where the receiving device is installed based on a signal processed by the processing unit when the transmitting device and the receiving device are in a non-communication state; The display unit displays information corresponding to the radio wave state detected by the unit.

  In one embodiment of the present invention, a radio wave state detection device applied to a reception device that includes a processing unit that receives a radio signal transmitted from a transmission device and performs processing on the radio signal includes: When the receiving device is in a non-communication state, a radio wave state detecting unit that detects a radio wave state at a place where the receiving device is installed based on a signal processed by the processing unit, and the radio wave state detecting unit detects Display means for displaying information corresponding to the radio wave condition.

  The above-described radio wave state detection device is applied to a reception device and detects a radio wave state in the reception device. Specifically, the radio wave state detection means detects the radio wave state at the installation location of the receiving device based on the signal processed by the processing unit in the receiving device when the transmitting device and the receiving device are not in communication. To do. The display means displays information corresponding to the detected radio wave condition. Thereby, it is possible to simply inform the user of the radio wave condition of the environment where the receiving device is placed. Therefore, by notifying the user that the receiving device should be installed in another location, it can be urged to install the receiving device in a place with good radio environment, or if the source of interference is known It can be prompted to move the disturbing source.

  In one aspect of the radio wave state detection device, the processing unit includes an automatic gain control circuit that automatically adjusts gain for the radio signal transmitted from the transmission device, and the radio wave state detection unit Acquires the gain from the automatic gain control circuit and detects the radio wave state based on the gain. Thereby, since it is not necessary to add a new circuit etc., a cost increase can be suppressed appropriately.

  In another aspect of the above-described radio wave state detection device, the radio wave state detection unit detects the radio wave state when the receiving device is installed at a plurality of installation locations, and the display unit includes the plurality of installation locations. In addition to displaying information corresponding to the radio wave condition detected in step 1, the comparison result of the radio wave condition is displayed. Thereby, it is possible to appropriately tell the user how the radio wave state has changed due to the change of the installation location, and it is possible to notify the user of the radio wave tendency in the environment where the receiving device is installed.

  In another aspect of the above-described radio wave state detection device, the radio wave state detection unit is configured to operate and / or move an interference source capable of generating an interference wave while fixing the installation location of the reception device. The radio wave condition is detected, and the display means displays information corresponding to the radio wave condition detected when the interference source is operated and / or moved.

  In another aspect of the radio wave state detection device, the radio wave state detection unit detects the radio wave state when the reception device is fixed and the direction of the reception device is rotated. The display means displays information corresponding to the radio wave state detected when the direction of the receiving device is rotated.

  Preferably, in the radio wave state detection device, the radio wave state detection unit detects the radio wave state for each reception channel in the reception device, and the display unit detects the radio wave state detected for each reception channel. Displays information corresponding to. In addition, the wireless communication apparatus further includes means for setting the reception channel having the best radio wave state among the detection of the radio wave state for each reception channel.

  Preferably, the display means displays information corresponding to a level of an interference wave based on the radio wave state detected by the radio wave state detection means.

  Preferably, the display means displays information corresponding to the radio wave state on a remote controller that operates the transmitting device and / or the receiving device. Thereby, even when the user is performing detection at a position away from the receiving device to some extent, the radio wave state can be easily recognized.

  More preferably, it further comprises means for generating a sound corresponding to the radio wave condition detected by the radio wave condition detecting means. This also makes it possible to easily recognize the radio wave state even when the user is performing detection at a position some distance from the receiving device.

  Preferably, the radio wave state detection apparatus further includes a storage unit that stores the radio wave state detected by the radio wave state detection unit, and the display unit includes information corresponding to the radio wave state stored in the storage unit. Is displayed.

  In one embodiment, the radio wave condition detection device described above is applied to an audio wireless speaker.

  In another aspect of the present invention, a radio wave state detection method performed in a receiving device having a processing unit that receives a radio signal transmitted from a transmitting device and performs processing on the radio signal includes the transmitting device and the receiving device. A radio wave state detection step for detecting a radio wave state at a place where the receiving device is installed based on a signal processed by the processing unit when the device is in a non-communication state; and the radio wave state detected by the radio wave state detection step A display step for displaying information corresponding to the state.

  In another aspect of the present invention, a radio wave state detection program executed by a receiving device that has a processing unit that receives a radio signal transmitted from a transmitting device and performs processing on the radio signal is provided on the receiving device. A radio wave state detecting means for detecting a radio wave state at an installation location of the receiving device based on a signal processed by the processing unit when the transmitting device and the receiving device are in a non-communication state; It functions as display means for displaying information corresponding to the radio wave state detected by the detection means.

  According to the radio wave condition detection method and the radio wave condition detection program described above, it is possible to simply inform the user of the radio wave condition of the environment where the receiving apparatus is placed, and to make it possible to optimally install the receiving apparatus. Become.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

[Device configuration]
FIG. 1 is a schematic configuration diagram of an audio wireless speaker 100 according to the present embodiment. The audio wireless speaker 100 mainly includes a transmission device 2 and a reception device 3. The audio wireless speaker 100 is an example of a wireless transmission device (wireless transmission system).

  The transmission device 2 mainly includes a control unit 21, an RF (Radio Frequency) output unit 22, a modulation unit 23, and an audio reproduction device 24. The audio reproduction device 24 is configured to be able to reproduce audio, and supplies the reproduced audio signal A21 to the modulation unit 23. For example, the audio reproduction device 24 is configured to be able to reproduce media such as a DVD. The modulation unit 23 modulates the audio signal A21 supplied from the audio reproduction device 24 and supplies the modulated audio signal A22 to the RF output unit 22. The RF output unit 22 acquires the audio signal A22 supplied from the modulation unit 23, performs predetermined processing on the signal, and wirelessly transmits the signal to the reception device 3 as the RF signal A20. The control unit 21 performs control by transmitting / receiving control signals C22, C23, and C24 to / from each of the RF output unit 22, the modulation unit 23, and the audio reproduction device 24.

  The receiving device 3 includes a control unit 31, an RF input unit 32, a demodulation unit 33, a speaker 34, a storage unit 35, and a display unit 36. The RF input unit 32 receives the RF signal A20 wirelessly transmitted from the RF output unit 22 of the transmission device 2 via an antenna (not shown), performs predetermined processing on this signal, and demodulates the signal as an audio signal A31. 33. The demodulator 33 demodulates the audio signal A31 supplied from the RF input unit 32, and supplies the demodulated audio signal A32 to the speaker 34. The speaker 34 also includes an amplifying unit (not shown), and amplifies the audio signal A32 supplied from the demodulating unit 33 and outputs it as sound. The control unit 31 performs control by transmitting and receiving control signals C32, C33, and C34 to and from the RF input unit 32, the demodulation unit 33, and the speaker 34, respectively. In addition, the control unit 31 performs processing for storing various data in the storage unit 35 and processing for displaying information on the display unit 36. The display unit 36 is composed of, for example, a liquid crystal display device.

  FIG. 2 is a schematic configuration diagram of the RF input unit 32 of the receiving device 3 described above. As illustrated, the RF input unit 32 includes a bandpass filter 321, an AGC circuit (automatic gain control circuit) 322, an amplifier 323, a mixer 324, a local oscillator 325, a lowpass filter 326, an amplifier 327, and the like. And an AD conversion unit 328. The bandpass filter 321 performs a process of allowing only a predetermined band to pass through the signal received from the antenna 39 (for example, the RF signal A20 wirelessly transmitted from the RF output unit 22 of the transmission device 2). In addition, the band pass filter 321 performs the process on the reception channel corresponding to the control signal S321 supplied from the control unit 31.

  The AGC circuit 322 performs a process of automatically adjusting the gain (sensitivity) on the signal processed by the bandpass filter 321. That is, the AGC circuit 322 adjusts the gain in the receiving device 3 according to the strength of the radio wave received from the antenna 39. In this case, the gain tends to increase when the received radio wave is very small, and the gain tends to decrease when the received radio wave is strong. Further, the AGC circuit 322 supplies information related to such a gain situation to the control unit 31 as a signal D1. The amplifier 323 amplifies the signal processed by the AGC circuit 322, and the local oscillator 325 oscillates a signal having a predetermined frequency. The mixer 324 mixes the signal output from the amplifier 323 and the signal output from the local oscillator 325 and supplies the mixed signal to the low-pass filter 326. The low-pass filter 326 performs a process of allowing only a predetermined band to pass through the signal supplied from the mixer 324. The amplifier 327 performs processing for amplifying the signal supplied from the low-pass filter 326, and the AD converter 328 AD-converts the signal amplified by the amplifier 327 and supplies the signal to the demodulator 33.

  Here, an outline of processing performed by the control unit 31 of the receiving device 3 in the present embodiment will be described. In the present embodiment, the control unit 31 performs processing for notifying the user of the radio wave condition (radio wave situation or radio background noise) of the environment where the receiving device 3 is placed. Specifically, when the transmission device 2 and the reception device 3 are in a non-communication state, the control unit 31 detects a radio wave state at the installation location of the reception device 3, and stores information on the detected radio wave state in the storage unit 35. To display the information on the display unit 36. That is, the radio wave environment of the place where the receiver 3 is installed is detected without transmitting radio waves from the transmitter 2 side. Specifically, the control unit 31 detects a radio wave state based on information about the gain status acquired from the AGC circuit 322 (corresponding to the signal D1 described above). As described above, the gain tends to increase when the received radio wave is very small, and the gain tends to decrease when the received radio wave is strong. Can be detected appropriately. Furthermore, the control unit 31 detects the radio wave state for each reception channel in the reception device 3 and displays information corresponding to the level (intensity) of the interference wave for each reception channel based on the detected radio wave state.

  By doing this, for example, when any receiving channel is not in good condition (that is, when there is more than a certain level of interference in any receiving channel), it is urged to change the installation location or the source of the interference is known Can prompt the user to move the source. Further, as a result of performing the detection as described above, the control unit 31 performs a process of automatically setting the reception channel that is in the best radio wave condition as a default, or a process of notifying the user of the reception channel. The installation of the transmission device 2 is performed after such processing. As described above, the control unit 31 corresponds to the radio wave state detection device in the present invention. Specifically, the control unit 31 functions as a radio wave state detection unit and a display unit.

  The reason why the control unit 31 performs the above processing is as follows. In a device such as a wireless speaker that transmits sound wirelessly, symptoms such as sound interruption or noise may occur when the radio wave environment of the place where the device is installed is not good. In particular, when an AV signal is transmitted, there is a tendency to cause interruptions in image sound and noise due to interference. However, if the radio wave environment is not well understood, it can be said that it is difficult to install and set the wireless speaker in a good state.

  On the other hand, many devices using the ISW band (such as 2.4 GHz band) are introduced into the market today and often live in the same environment. In addition, when such a device is used not only in a household but also in a nearby household, it may be affected by radio waves. In this way, when receiving interference from devices in the same frequency band, the user will try to improve by changing the communication channel of the wireless device or by moving away from the disturbing device, Since the radio wave environment (which channel is disturbed, how strong it is, etc.) cannot be clearly recognized, trial and error will occur. Although a method of recognizing such a radio wave environment with a device such as a spectrum analyzer is also conceivable, it can be said that such a device is not common.

  Therefore, in the present embodiment, the control unit 31 of the receiving device 3 detects the radio wave state (radio background noise) of the environment where the receiving device 3 is placed. Thereby, it is possible to simply inform the user of the radio wave condition of the environment where the receiving device 3 is placed. Therefore, by informing the user that the receiving device 3 should be installed in another location, it is possible to prompt the user to install the receiving device 3 in a location with a good radio wave environment, or when the interference source is known Can prompt the user to move the source. Further, in this embodiment, since the radio wave state is detected using the AGC circuit 322 in the RF input unit 32, it is not necessary to add a new circuit or the like, so that an increase in cost can be appropriately suppressed. . Further, for example, by detecting the radio wave state for a long time, it is possible to appropriately notify the user of the temporal change of the radio wave state in the environment.

[Display example]
Next, a display example of information corresponding to the detected radio wave state will be described. Here, a display example when the receiving device 3 is installed in a plurality of places and the radio wave state is detected will be described. In this case, the control unit 31 stores the radio wave states detected at a plurality of installation locations in the storage unit 35 and displays the comparison result on the display unit 36 by comparing the stored radio wave states.

  FIG. 3 shows a display example when the reception device 3 is installed at a plurality of places and the radio wave state is detected. Here, an example will be described in which the relationship between the installation location and the interference wave level (A to C) for each reception channel (ch1, ch2, ch3) is displayed. It is assumed that the level of the interference wave increases in order of level A, level B, and level C, that is, the radio wave environment deteriorates.

  FIG. 3A shows a display example when detection is performed at the first installation location (Location: 1). In this case, the reception channel ch1 is level A, the reception channel ch2 is level B, and the reception channel ch3 is being detected. For example, during detection, characters such as “now detecting” are blinked, and the level determined after detection is displayed. FIG. 3B shows the case where the user installs the receiving device 3 in a location different from the first installation location (Location: 1), that is, the second installation location (Location: 2). The example of a display is shown. In this case, the reception channel ch1 is being detected, and the reception channels ch2 and ch3 are not detected.

  FIG. 3C shows a display example of the result when detection is performed by repeatedly changing the installation location as described above. Here, the status for each reception channel is displayed in the order of the installation locations with the best radio wave conditions. In this example, it can be seen that the installation location indicated by “Location: 5” has the best radio wave condition. In addition, the control part 31 memorize | stores the radio wave state detected in the some installation place in the memory | storage part 35, and performs the process which compares the several radio wave state memorize | stored in the memory | storage part 35, FIG.3 (c). Display as shown in.

  By displaying the detection result as described above, it is possible to appropriately tell the user how the radio wave state has changed due to the change of the installation location, and to inform the user of the radio wave tendency in the environment where the receiving device 3 is installed. It becomes possible to inform.

  Note that FIG. 3 shows an example in which the installation location is displayed as “Location: 1” or “Location: 2”, but instead, a specific installation location input by the user (for example, under the television). May be displayed. In this case, the user can input the installation location using a keyboard or the like. Further, although FIG. 3 shows an example in which the interference wave level is displayed by A to C, the interference wave level may be displayed by a level bar or the like instead.

  Furthermore, although the example which the control part 31 displays the comparison result of the electromagnetic wave state detected in the some installation place was shown above, you may comprise the control part 31 without providing such a function. In this case, the user can take a memo about the detection results for each of the plurality of installation locations and perform the comparison himself / herself to obtain the same result. In the case where the control unit 31 is configured in this way, changes to the receiving device of the existing audio wireless speaker can be minimized, and cost increase can be effectively suppressed.

[Processing in the control unit]
Next, an example of processing performed by the control unit 31 in the receiving device 3 will be described. Here, a description will be given of processing performed when the receiving device 3 is installed at a plurality of locations to detect a radio wave state and display a comparison result of the radio wave states at the plurality of installation locations.

  FIG. 4 is a flowchart showing processing performed by the control unit 31. In this process, the reception channel is expressed as “n”, and the installation location of the reception device 3 is expressed as “p”. At the start of the process, “n = 1” is set and “p = 1” is set. Furthermore, here, a case where the receiving device 3 has three receiving channels is taken as an example.

  First, in step S101, the control unit 31 sets the reception channel to “n” and sets the installation location of the reception device 3 to “p”. Then, the process proceeds to step S102. In step S102, the control unit 31 sets the receiving device 3 to the reception state, and thereafter acquires information on the gain status from the AGC circuit 322 (specifically, detects the gain fluctuation status of the AGC circuit 322 for a certain period of time). This information is stored in the storage unit 35. Then, the process proceeds to step S103.

  In step S103, the control unit 31 determines whether the reception channel is “3” (whether “n = 3”). That is, it is determined whether or not detection for all reception channels has been completed. If “n = 3” (step S103; Yes), the process proceeds to step S105. If not “n = 3” (step S103; No), the process proceeds to step S104. In step S104, the control unit 31 sets the reception channel as “n = n + 1”. That is, the setting is performed so that detection is performed in the next reception channel. And a process returns to step S101 and performs the process of above-described step S101-S103 again.

  In step S105, the control unit 31 determines whether or not the location where the current detection is performed is the first installation location (whether or not “p = 1”). If “p = 1” (step S105; Yes), the process proceeds to step S106. In step S <b> 106, the control unit 31 causes the display unit 36 to display the detection result at the current installation location of “p”. In other words, the detection result of the installation location of “p = 1” (first installation location) is displayed. In this case, since there is only a detection result of one installation location, only the detection result of the installation location is displayed. For example, the control unit 31 displays information corresponding to the interference wave level for each of the three reception channels. Then, the process proceeds to step S108.

  On the other hand, when “p = 1” is not satisfied (step S105; No), the process proceeds to step S107. In step S107, the control unit 31 detects the detection result at the current “p” installation location and the comparison result between the installation location “p” and an installation location other than “p” (an installation location where detection was performed previously). Is displayed on the display unit 36. For example, the control unit 31 determines the level of the interference wave for each reception channel in all the installation locations that have been detected so far, and the radio wave status at the installation location that has currently detected the installation location that has been detected previously. Display good or bad. Then, the process proceeds to step S108.

  In step S108, the control unit 31 obtains from the user a determination as to whether or not to install the receiving device 3 at the location where the current detection is performed. When installing in the place which detected now (step S108; Yes), a process progresses to step S110. In step S <b> 110, the control unit 31 performs processing for setting the reception channel that is in the best radio wave condition as a default and displaying the reception channel on the display unit 36. When the above process ends, the process exits the flow.

  On the other hand, when not installing in the place which detected now (step S108; No), a process progresses to step S109. In step S109, the control unit 31 sets the reception channel as “n = 1” and sets the installation location as “p = p + 1” after the reception device 3 is installed at another location by the user. And a process returns to step S101 and performs the process mentioned above again.

  According to the processing described above, it is possible to simply notify the user of the radio wave condition of the environment where the receiving device 3 is placed, and to make the receiving device 3 installed optimally.

[Other embodiments]
Next, another embodiment will be described.

  In the above, the embodiment in which the radio wave state is detected by changing the installation location of the receiving device 3 has been described, but the present invention is not limited to this. In another embodiment, after the installation location of the reception device 3 is determined to some extent, the reception device 3 is fixed to the installation location, and the radio wave state can be detected while finely adjusting the reception device 3. FIG. 5 shows a display example when the radio wave state is detected while finely adjusting the receiving device 3 as described above. FIG. 5 shows a simple level display for the interference wave in the reception channel ch1. For example, as a fine adjustment of the receiving device 3, the direction of the receiving device 3 (such as the direction of the antenna 39) can be rotated. In this case, the detection result can be stored and displayed for each direction of the receiving device 3 (for example, for each angle 0 °, angle 90 °, and angle 180 °).

  In still another embodiment, the radio wave condition can be detected by fixing the installation location of the receiving device 3 and operating or moving an interference source (for example, an electronic device) that is considered to generate an interference wave. it can. FIG. 6 shows a display example when the radio wave state is detected after the interference source is operated. FIG. 6A shows a display example when detection is performed after the first disturbance source (Equipment: 1) is operated, and FIG. 6B shows a third disturbance source ( The example of a display at the time of detecting after operating Equipment: 3) is shown. As shown in FIG. 6, instead of displaying “Equipment: 1” or “Equipment: 3”, a specific disturbance source (device name) input by the user may be displayed. Further, after the interference source is determined by operating the interference source as described above to determine the interference source, the distance between the interference source and the receiver 3 is changed (for example, by moving the interference source). The radio wave condition can be further detected. In this case, it may be displayed in real time that the level of the disturbing wave is changed by changing the distance between the disturbing source and the receiving device 3.

  In the above description, the example in which the level of the interference wave is displayed as the information corresponding to the detected radio wave state is shown, but the present invention is not limited to this. In another example, whether the radio wave condition is good or bad can be displayed instead of the interference wave level. For example, characters such as “GOOD” and “NG” can be displayed. Further, the information corresponding to the detected radio wave condition is not limited to being displayed only on the receiving device 3, and the information corresponding to the radio wave condition is displayed on the remote controller that operates the transmitting device 2, the receiving device 3, or the like. Also good. Thereby, even when the user is detecting at a position away from the receiving device 3 to some extent (for example, when detecting by moving the interference source), the radio wave condition can be easily recognized.

  Furthermore, it is not limited to displaying information corresponding to the radio wave state as described above, and a sound corresponding to the radio wave state may be generated from the speaker 34 or the like. For example, information corresponding to the radio wave condition can be notified to the user by changing the interval, height, magnitude, etc. of the sound according to the level of the interference wave. Thereby, even when the user is detecting at a position away from the receiving device 3 to some extent (for example, when detecting by moving the interference source), the radio wave condition can be easily recognized.

  In the above, the embodiment has been described in which the reception device 3 detects the radio wave condition. However, when the device has both the transmission and reception functions, the radio wave condition can be detected in the same manner. it can.

The schematic block diagram of the audio wireless speaker which concerns on a present Example is shown. The schematic block diagram of RF input part is shown. The example of a display at the time of detecting a radio wave state by installing a receiver in several places is shown. It is a flowchart which shows the process which a control part performs. An example of display when the radio wave state is detected while finely adjusting the receiving apparatus is shown. The example of a display at the time of detecting a radio wave state after operating a disturbance source is shown.

Explanation of symbols

2 Transmitting device 3 Receiving device 21 Control unit 22 RF output unit 31 Control unit 32 RF input unit 34 Speaker 35 Storage unit 36 Display unit 100 Audio wireless speaker 322 AGC circuit

Claims (14)

A radio wave state detection device applied to a reception device having a processing unit that receives a radio signal transmitted from a transmission device and performs processing on the radio signal,
A radio wave state detecting means for detecting a radio wave state at an installation location of the receiving device based on a signal processed by the processing unit when the transmitting device and the receiving device are in a non-communication state;
A radio wave condition detection apparatus comprising: display means for displaying information corresponding to the radio wave condition detected by the radio wave condition detection means. The processing unit includes an automatic gain control circuit that automatically adjusts a gain for the radio signal transmitted from the transmission device;
2. The radio wave state detection device according to claim 1, wherein the radio wave state detection unit acquires the gain from the automatic gain control circuit and detects the radio wave state based on the gain. The radio wave state detection means detects the radio wave state when the receiving device is installed at a plurality of installation locations,
The radio wave condition according to claim 1 or 2, wherein the display means displays information corresponding to the radio wave conditions detected at the plurality of installation locations, and displays a comparison result of the radio wave conditions. Detection device. The radio wave condition detection means detects the radio wave condition when the interference device capable of generating an interference wave is operated and / or moved with the installation location of the receiving device fixed.
The radio wave condition detection according to claim 1 or 2, wherein the display means displays information corresponding to the radio wave condition detected when the interference source is operated and / or moved. apparatus. The radio wave state detecting means detects the radio wave state when the receiving device is fixed and the direction of the receiving device is rotated,
The radio wave state detection device according to claim 1, wherein the display unit displays information corresponding to the radio wave state detected when the direction of the receiving device is rotated. The radio wave state detecting means detects the radio wave state for each reception channel in the receiving device,
6. The radio wave state detection device according to claim 1, wherein the display unit displays information corresponding to the radio wave state detected for each reception channel.   The radio wave condition detection device according to claim 6, further comprising means for setting the reception channel with the best radio wave condition among the detection of the radio wave condition for each reception channel.   The radio wave according to any one of claims 1 to 7, wherein the display unit displays information corresponding to a level of an interference wave based on the radio wave state detected by the radio wave state detection unit. State detection device.   The radio wave state according to any one of claims 1 to 8, wherein the display unit displays information corresponding to the radio wave state on a remote controller that operates the transmission device and / or the reception device. Detection device.   The radio wave condition detection apparatus according to any one of claims 1 to 9, further comprising means for generating a sound corresponding to the radio wave condition detected by the radio wave condition detection means. And further comprising storage means for storing the radio wave state detected by the radio wave state detection means,
The radio wave state detection apparatus according to claim 1, wherein the display unit displays information corresponding to the radio wave state stored in the storage unit.   The radio wave state detection device according to claim 1, wherein the radio wave state detection device is applied to an audio wireless speaker. A radio wave state detection method performed in a receiving apparatus having a processing unit that receives a radio signal transmitted from a transmitting apparatus and performs processing on the radio signal,
A radio wave state detection step of detecting a radio wave state at an installation location of the receiving device based on a signal processed by the processing unit when the transmitting device and the receiving device are in a non-communication state;
A radio wave state detection method comprising: a display step of displaying information corresponding to the radio wave state detected by the radio wave state detection step. A radio wave state detection program that is executed by a receiving device that has a processing unit that receives a wireless signal transmitted from a transmitting device and performs processing on the wireless signal,
The receiving device;
A radio wave state detecting means for detecting a radio wave state at an installation location of the receiving device based on a signal processed by the processing unit when the transmitting device and the receiving device are in a non-communication state;
A radio wave condition detection program that functions as display means for displaying information corresponding to the radio wave condition detected by the radio wave condition detection means.

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