JP5648665B2 - Wireless LAN network system, karaoke commander, and wireless terminal - Google Patents

Description

  The present invention relates to a wireless LAN network system including a karaoke commander and a wireless terminal used as a remote control device for the karaoke commander, and more particularly to an improvement for easily changing a channel in an ad hoc mode.

  There is known a karaoke apparatus that amplifies and outputs a sound input from a sound input apparatus in parallel with a performance output of a music selected from a large number of music. For example, a karaoke device used in a karaoke box or the like. According to such a karaoke apparatus, music information of a karaoke performance song selected from a large number of karaoke performance songs stored in advance in a storage device is output, and an image including lyrics information of the karaoke performance song is synchronized with the output. By displaying it on the screen, it is possible to enjoy karaoke performance of a desired song.

  With the recent development of communication technology, karaoke devices installed in karaoke boxes and the like have been able to transmit and receive data by wireless communication. That is, a communication network system in which a network group is configured by a karaoke commander and a wireless terminal used as a remote control device for the karaoke commander to perform data communication with each other is widely used. A well-known wireless LAN network system is generally used as such a communication network system. There has been proposed a technique that makes communication of a wireless LAN network system configured by such a karaoke commander and a wireless terminal suitable. For example, it is a karaoke system described in Patent Document 1.

JP 2011-180515 A

  In the wireless LAN network system, it is possible to set an ad-hoc mode in which communication is performed between slave units without a base unit (access point), and a wireless LAN configured by the karaoke commander and a wireless terminal The present invention is also preferably applied to a network system. Here, when the communication state deteriorates in the wireless LAN network system, it is generally attempted to improve the communication state by changing the use channel, but in the ad hoc mode, devices included in the same network in the surroundings May exist, the channel may be changed in accordance with such a device. Therefore, when changing the channel to be used in the ad hoc mode, a human operation such as turning off the power of a device included in the network group or disabling wireless communication has been performed. In addition to being cumbersome, if there is a device leaked in the operation, the channel of the device that has been correctly operated will be aligned with the channel of the device leaked in the operation, so that the channel change is not suitably performed A malfunction occurs. In the conventional technique, such a problem cannot be solved. Such a problem has been newly found in the process in which the present inventor continues eager research to improve the wireless LAN network system including the karaoke commander and the wireless terminal.

  The present invention has been made in the background of the above circumstances, and an object of the present invention is to provide a wireless LAN network system, a karaoke commander, and a wireless terminal for easily changing a channel in an ad hoc mode. .

In order to achieve such an object, the gist of the first invention is that a karaoke commander and a plurality of wireless terminals used as remote control devices for the karaoke commander are provided, and a network group in an ad hoc mode is configured. to a wireless LAN network system, the karaoke commander, when performing an input device that receives an input operation by the user, the channel changes that related to the communication in response to the input operation Niyoru the input device, the plurality of radio terminals each and disabling the channel to, and a second specified time to start communication in the first specified time and the changed channel to perform invalidation of the channel as time information relating to the change, and notifies a notification unit, after notification by the notification means, before the change in each of the plurality of radio terminals channel And after confirming the invalidation, and, during the period from the notification the first designated time notified by means to the second specified time, and transmitting means for transmitting a radio wave in the channel after change Each of the plurality of wireless terminals, when receiving notification by the notification means , after transmitting a communication invalidity notification to the karaoke commander, from the first specified time corresponding to the time information A communication invalidating means for invalidating transmission / reception of radio waves is provided until the second designated time .

In this way, when the karaoke commander performs an input device that accepts an input operation by a user and changes a channel related to communication in accordance with the input operation by the input device , each of the plurality of wireless terminals and disabling the channel, and a second specified time to start communication in the first specified time and the changed channel to perform invalidation of the channel as time information relating to the change, and notifying means for notifying After the notification by the notification means, after confirming the invalidation of the channel before the change in each of the plurality of wireless terminals, and from the first specified time notified by the notification means, the second designation until time, and a transmission unit that transmits signals in the channel after change, wherein, each of the plurality of wireless terminal receives a notification by the notification means If, after sending a disable notification of communication to the karaoke commander, while from the first designated time to the second designated time corresponding to the time information, the communication disabled to disable the transmission and reception of radio waves When the channel used is changed in the ad hoc mode, it is possible to eliminate the complexity of human operation, and it is preferable that a device in which the channel change is not reflected due to the omission of operation is preferable. Can be suppressed. That is, it is possible to provide a wireless LAN network system that can easily change the channel in the ad hoc mode.

Here, in the first aspect of the present invention, preferably, the karaoke commander displays the change result on the display when the channel is correctly changed. In this way, the user can confirm that the channel has been changed correctly.

  In order to achieve the above object, the gist of the second invention is a karaoke commander in the wireless LAN network system of the first invention. In this way, it is possible to provide a karaoke commander that can easily change the channel in the ad hoc mode.

  In order to achieve the above object, the gist of the third invention is a wireless terminal in the wireless LAN network system of the first invention. In this way, it is possible to provide a wireless terminal that can easily change the channel in the ad hoc mode.

It is a block diagram which illustrates the composition of the karaoke device to which the wireless LAN network system of the present invention is applied suitably. It is a block diagram which illustrates the composition of the electronic quick sample device which is an example of the radio terminal used as a remote control device of the karaoke device of FIG. It is a functional block diagram explaining the principal part of the control function each provided in CPU of the karaoke apparatus of FIG. 1, and CPU of the electronic quick sample apparatus of FIG. It is a figure explaining the change of the channel which concerns on the wireless LAN communication in the ad hoc mode in the wireless LAN network system conventionally common for the comparison with the wireless LAN network system of this invention. It is a figure explaining the change of the channel which concerns on the wireless LAN communication in the ad hoc mode in the wireless LAN network system of a present Example. It is a time chart explaining the change of the channel which concerns on the wireless LAN communication in the ad hoc mode in the wireless LAN network system of a present Example. It is a flowchart explaining the principal part of an example of the channel change control which concerns on the wireless LAN communication in the ad hoc mode by CPU of the karaoke apparatus of FIG. 3 is a flowchart for explaining a main part of an example of channel change control related to wireless LAN communication in an ad hoc mode by a CPU of the electronic sample device of FIG. 2.

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

  FIG. 1 is a block diagram illustrating a configuration of a karaoke apparatus (karaoke commander) 10 to which the wireless LAN network system of the present invention is preferably applied. A karaoke apparatus 10 shown in FIG. 1 includes a CPU 12 as a central processing unit, a ROM 14 as a read-only memory, a RAM 16 as a write / read memory as needed, a hard disk 18 as a storage device, and a graphics chip (graphics). A video processing unit 20 such as a sound board, a sound processing unit 22 such as a sound chip (sound board), an operation panel 24, a communication interface 26, and a video output terminal 28. Connected to the audio processing unit 22 via an audio output terminal 36 and a display 34 which is a video display device, a microphone 34 which is an audio input device connected to the audio processing unit 22 via an audio input terminal 32. And an audio output device connected to the amplifier 38. A speaker 40 is, and a wireless communication section 46 is configured by including.

  The karaoke apparatus 10 is connected to a communication line 44 via the communication interface 26 and the network connection terminal 42. Similarly, the communication line between the karaoke apparatus 10 and an external device such as a server connected to the communication line 44 is used. Information can be communicated via the terminal 44. The communication line 44 is, for example, the Internet. The karaoke device 10 is preferably connected to a server (host device) (not shown) via the communication line 44, and receives distribution of music data and various information described later from the server. That is, the karaoke apparatus 10 is preferably a communication karaoke apparatus that is connected to a predetermined communication line and transmits / receives various information to / from the server, but is not connected to such a communication line. The present invention is also suitably applied to devices and the like.

  The CPU 12 is a so-called microcomputer that processes and controls electronic information based on a predetermined program stored in advance in the ROM 14 using the temporary storage function of the RAM 16, and executes various controls in the karaoke apparatus 10. . That is, when a predetermined music piece (karaoke performance music piece) is selected and input by the operation panel 24 or the electronic sample apparatus 50 described later, the music data is read from the hard disk 18 and the sound processing is performed according to the progress of the music performance. Between performance output control for transmitting performance information to the unit 22, video output control for generating lyrics character video and background video and transmitting to the video processing unit 20, and a server (not shown) via the communication line 42, etc. In addition to basic control such as information communication control, channel change control according to the present embodiment, which will be described later, is executed.

  The video processing unit 20 performs control to display a predetermined screen on the display 30 through the video output terminal 28 for the lyric character video and the background video. The sound processing unit 22 reproduces a music signal from music data, and outputs a performance sound obtained by mixing a singing voice of a user (performer) input from the microphone 34 via the audio input terminal 32. The performance sound is supplied to the amplifier 38 via the audio output terminal 36, amplified by the amplifier 38, and output from the speaker 40.

  The operation panel 24 is an input device that allows the user of the karaoke apparatus 10 to select a song that the user wants to sing and to perform various settings. The karaoke apparatus 10 preferably includes the karaoke apparatus 10 (commander) that stores the CPU 12, the video processing unit 20, the audio processing unit 22, and the like in addition to or as an alternative to the operation panel 24. ) The main body may be provided with a touch panel display capable of touch operation input and video display.

  The karaoke device 10 includes a singular device or a wireless terminal that performs wireless communication with the karaoke device 10 using radio waves as a remote operation device for remotely executing a part or all of the functions of the operation panel 24. A plurality (two in FIG. 1) of electronic quick sample devices 50a and 50b (hereinafter simply referred to as electronic quick sample device 50 unless otherwise distinguished) are provided. The electronic quick sample apparatus 50 has a configuration as shown in FIG. 2 to be described later, thereby performing wireless LAN communication with the karaoke apparatus 10 in, for example, an ad hoc mode, and various kinds of information transmitted from the karaoke apparatus 10. While receiving information, various information is transmitted with respect to the karaoke apparatus 10. FIG. In response to the operation of the electronic quick sample device 50, a signal transmitted from the electronic quick sample device 50 is supplied to the CPU 12, so that the user of the karaoke device 10 can select a song to be sung, Input for setting is accepted.

  The wireless communication unit 46 transmits / receives information to / from devices such as the electronic sample device 50 via radio waves. For example, wireless LAN communication conforming to a predetermined standard such as IEEE802.11 is performed with a device such as the electronic sample device 50. By performing such communication, a music selection input from the electronic quick sample device 50 or the like is accepted, or a command for executing a predetermined process is transmitted from the karaoke device 10 to the electronic quick sample device 50 or the like. As described above, mutual information is exchanged between the karaoke apparatus 10 and the electronic quick sample apparatus 50 or the like via radio waves. In other words, the wireless communication unit 46 is a wireless LAN communication module that performs wireless LAN communication by radio waves with the electronic quick sample device 50 and the like used as a remote control device of the karaoke device 10.

  FIG. 2 is a block diagram illustrating a configuration of the electronic quick sample device 50 which is an example of a wireless terminal used as a remote control device of the karaoke device 10. As shown in FIG. 2, the electronic sample apparatus 50 includes a CPU 52 as a central processing unit, a ROM 44 as a read-only memory, a RAM 56 as a write / read memory as needed, and a storage unit 58 such as a flash ROM. A touch panel display 60 for displaying a predetermined image (video) and performing input in response to a user's contact, and a wireless communication unit 70. The touch panel display 60 includes a display device 62 that displays a predetermined image on the touch panel display 60 and a touch panel 64 that performs a touch operation input by a user.

  The wireless communication unit 70 performs wireless communication with the wireless communication unit 46 in the karaoke apparatus 10. By performing such communication, a music selection input is performed on the karaoke apparatus 10 or the like, or a command for executing a predetermined process in the electronic quick sample apparatus 50 transmitted from the karaoke apparatus 10 is received. In this way, mutual information is exchanged between the karaoke apparatus 10 and the electronic quick sample apparatus 50 via radio waves. That is, the wireless communication unit 70 is a wireless LAN communication module that performs wireless LAN communication using radio waves with the karaoke apparatus 10 or the like.

  FIG. 3 is a functional block diagram illustrating the main parts of the control functions provided in the CPU 12 of the karaoke apparatus 10 and the CPU 52 of the electronic quick sample apparatus 50, respectively. The wireless LAN communication control unit 80, the communication state determination unit 82, and the channel change notification unit 84 shown in FIG. 3 are connected to the CPU 12 of the karaoke apparatus 10, and the wireless LAN communication control unit 86 and the communication invalidation unit 88 are connected to the electronic device. Each of the CPUs 52 of the quick reference device 50 is functionally provided.

  The wireless LAN communication control means 80 controls wireless LAN communication via the wireless communication unit 46 by the karaoke apparatus 10. The wireless LAN communication control means 86 controls wireless LAN communication via the wireless communication unit 70 by the electronic sample device 50. As an operation mode of wireless LAN communication, an ad-hoc mode (ad-hoc mode) in which communication is performed between slave units without a base unit (access point) (that is, a mode in which wireless LAN adapters in each device communicate directly) Infrastructure mode (infrastructure mode) in which all slave units communicate via the master unit (that is, a wireless LAN adapter in each device communicates via an access point that controls the network and does not communicate directly with each other). ) Since the present invention mainly relates to the operation in the ad hoc mode, in the following description, the wireless LAN communication control in the ad hoc mode will be described as the communication control by the wireless LAN communication control means 80 and 86.

  The wireless LAN communication control means 80 and 86 perform multi-hop communication control in which terminals such as the karaoke device 10 and the electronic quick sample device 50 autonomously perform routing in wireless LAN communication in an ad hoc mode. In addition, when the karaoke device 10 and the electronic sample device 50 form a network group in an ad hoc mode, an ESS-ID (Extended Service Set Identifier) set in the wireless communication units 46 and 70 which are wireless LAN adapters. ). As this ESS-ID, a serial number which is identification information unique to the (preferably one) karaoke apparatus 10 included in the network group is preferably used. Here, preferably, the communication by the wireless LAN communication control means 80 and 86 is encrypted, and only devices for which operations corresponding to the encryption have been performed in advance are allowed to join the network group.

  The wireless LAN communication control means 80 and 86 perform channel setting related to wireless LAN communication by the wireless communication units 46 and 70. For example, any one of channels 1 to 14 is set as a channel related to wireless LAN communication in the ad hoc mode. A common channel is set in devices included in the same network group. In addition, the channel related to the wireless LAN communication of the own device is not set, and wireless LAN communication in the ad hoc mode is performed within the communication range (for example, about several meters) by the wireless communication units 46 and 70. If the device exists, the channel related to the wireless LAN communication is set to the channel related to the own wireless LAN communication. In other words, the channel relating to the wireless LAN communication of the own device is automatically set in accordance with the channel relating to the wireless LAN communication by the devices present in the vicinity.

  The communication state determination unit 82 determines a communication state related to wireless communication via the wireless communication unit 46. Preferably, the deterioration of the communication state related to the wireless LAN communication in the ad hoc mode with the electronic sample device 50 is determined. For example, it is determined whether the communication state deteriorates when the communication speed related to the wireless LAN communication with the electronic sample device 50 decreases or when a communication error is detected. Specifically, when the bit rate (number of bits transmitted per second) is detected and the bit rate falls below a predetermined threshold, or the number of detected communication errors exceeds a predetermined threshold. In such a case, it is determined that the communication state related to the wireless LAN communication in the ad hoc mode with the electronic sample device 50 has deteriorated.

  The channel change notifying unit 84 changes the channel (changes the channel to the electronic sample device 50, which is a wireless terminal) when the wireless LAN communication control unit 80 changes the channel related to the wireless LAN communication in the ad hoc mode. Notification of the change and the channel after the change) and the time information related to the change. Preferably, as such time information, a time (start timing) for executing a channel change in the wireless communication unit 46 of the karaoke apparatus 10 and a time required for the execution (change required time experimentally obtained in advance). Notice. Preferably, a timing for notifying the electronic sample device 50 of a channel change (a channel change notification transmission timing) may correspond to the time information.

  Preferably, the channel change notifying unit 84 determines whether or not the communication status determining unit 82 has deteriorated the communication status with the electronic sample device 50, so Notify the change and time information related to the change. That is, when the communication state determination unit 82 determines that the communication state with the electronic sample device 50 is deteriorated, the ad hoc mode is used to improve the communication state with the electronic sample device 50. Prior to executing the change of the channel related to wireless LAN communication, the change of the channel and the time information related to the change are notified to the electronic sample device 50. The channel change notification means 84 is preferably configured so that a predetermined channel change operation by a user (for example, a service person who manages a karaoke service) is performed via the operation panel 24, the electronic quick sample device 50, or the like. If so, prior to executing the channel change, the electronic sample device 50 is notified of the channel change and time information related to the change.

  When receiving the notification from the channel change notifying unit 84, the communication invalidating unit 88 invalidates transmission / reception of radio waves by the wireless communication unit 70 for a specified time corresponding to the time information related to the notification. Preferably, the operation of the wireless communication unit 70 is stopped. In other words, when the communication invalidation unit 88 receives the notification from the channel change notification unit 84, the wireless LAN communication control unit 86 performs the wireless communication for a specified time corresponding to the time information related to the notification. Wireless LAN communication via the unit 70 is stopped. The specified time is, for example, a time from the time at which the channel change notified by the channel change notifying means 84 is executed until the time required for the execution elapses. This is the time added to the grace time. Preferably, the specified time is stored in advance in the storage unit 58 and the wireless communication unit 70 from when the notification by the channel change notification unit 84 is received until the specified time elapses. The transmission / reception of radio waves by may be invalidated. In such an embodiment, the specified time stored in the storage unit 58 or the like is experimentally obtained in advance and stored for a time sufficiently longer than the time required to execute the channel change in the wireless communication unit 46 of the karaoke apparatus 10. Is done. The wireless LAN communication control means 86 validates transmission / reception of radio waves by the wireless communication unit 70 after the specified time has elapsed.

  After the notification by the channel change notification unit 84, the wireless LAN communication control unit 80 transmits radio waves on the channel after the change before the specified time corresponding to the time information notified by the channel change notification unit 84 has elapsed. Send. That is, the wireless LAN communication control means 80 corresponds to the transmission means in this embodiment. In other words, after the notification by the channel change notifying unit 84, the wireless LAN communication control unit 80, in response to the notification, the electronic sample apparatus 50 in which transmission / reception of radio waves has been disabled by the communication invalidating unit 88. The radio communication unit 70 transmits radio waves related to the wireless LAN communication in the ad hoc mode on the channel after the change before the radio wave transmission / reception is validated again after the lapse of the specified time.

  FIG. 4 is a diagram for explaining a channel change related to wireless LAN communication in an ad hoc mode in a wireless LAN network system that has been generally used for comparison with the wireless LAN network system of the present invention. In the channel change control shown in FIG. 4, first, in P1 related to the operation of the service person 90 who manages the karaoke service, communication (transmission and reception of radio waves) of the electronic sample devices 50a and 50b is performed by the operation of the service person 90. ) Is disabled. For example, the electronic sample apparatus 50a, 50b is powered off or the operation of the wireless communication unit 70 is stopped. Next, in P <b> 2 related to the operation of the serviceman 90, the channel related to wireless LAN communication in the wireless communication unit 46 of the karaoke apparatus 10 is changed by the operation of the serviceman 90. Next, in P3 related to the operation of the karaoke apparatus 10, in the karaoke apparatus 10 in which the channel change operation has been performed, the reconnection process related to wireless LAN communication in the wireless communication unit 46 is executed, and the channel change is performed wirelessly. Reflected in LAN communication. Next, in P4 related to the operation of the serviceman 90, after the serviceman 90 confirms that the wireless LAN communication has been started in the wireless communication unit 46 of the karaoke apparatus 10, the serviceman 90 operates to operate the serviceman 90. Communication between the electronic sample devices 50a and 50b is activated. Next, in P5 related to the operation of the karaoke apparatus 10, a change result indicating that the channel has been correctly changed is displayed on the display 30 or the like of the karaoke apparatus 10. Next, in P6 related to the operation of the serviceman 90, the serviceman 90 confirms that the channel has been correctly changed in the karaoke apparatus 10 based on the change result displayed on the display 30 or the like of the karaoke apparatus 10. The

  In the conventional wireless LAN network system described with reference to FIG. 4, there are various problems in changing the channel related to wireless LAN communication in the ad hoc mode. That is, P1, P2, P4, and P6 are steps related to the operation of the service person 90, and there is an adverse effect that a lot of human work is required and the operation is complicated. Further, for example, in P1, if the communication of either one of the electronic sample devices 50a and 50b is not invalidated due to a human error, the channel change in the network group may not be suitably performed. . That is, when communication is validated in P4 for the electronic sample device 50 on the side where communication is invalidated in P1, the validated electronic sample device 50 is invalidated due to an operation leak. Since the channel setting is performed in accordance with the channel of the wireless LAN communication in the electronic sample device 50 that has not been performed, the channel before the change may be set again. As described above, in the conventional technique shown in FIG. 4, there is a possibility that an apparatus that does not reflect the change of the channel due to the operation omission may occur in addition to the complexity due to the human operation.

  FIG. 5 is a diagram for explaining channel change related to wireless LAN communication in the ad hoc mode in the wireless LAN network system 100 of this embodiment including the karaoke device 10 and the electronic quick sample devices 50a and 50b as wireless terminals. It is. FIG. 6 is a time chart for explaining a channel change related to wireless LAN communication in the ad hoc mode in the wireless LAN network system 100 of the present embodiment. P1 to P6 are steps indicated by the same reference numerals in FIG. It corresponds to. The channel change control of the present embodiment shown in FIGS. 5 and 6 shows an example of channel change by manual operation of the serviceman 90. First, in P1 related to the operation of the serviceman 90, the service change is made. By the operation of the man 90, the channel related to the wireless LAN communication in the wireless communication unit 46 of the karaoke apparatus 10 is changed. Next, in P2 related to the operation of the karaoke device 10, the time (from the karaoke device 10 to the electronic quick sample devices 50a and 50b is changed to a channel change and time change information relating to the change (time information). The designated time 1) and the time required for the execution (designated time 2) are notified. Next, in P3 related to the operation of the karaoke apparatus 10, the invalidation of communication in the electronic sample apparatus 50a, 50b is confirmed (for example, a wireless invalid notice is received from the electronic sample apparatus 50a, 50b). After a predetermined time, a reconnection process related to the wireless LAN communication in the wireless communication unit 46 is executed after a predetermined time, and the channel change is reflected in the wireless LAN communication. At the same time, after receiving the notification from the karaoke device 10 in P4 relating to the operation of the electronic quick sample devices 50a and 50b, the communication in the wireless communication unit 70 is performed from the designated time 1 to the designated time 2 related to the notification. After the designated time 2 has passed, the communication in the wireless communication unit 70 is validated again. Next, in P5 related to the operation of the karaoke apparatus 10, a change result indicating that the channel has been correctly changed is displayed on the display 30 or the like of the karaoke apparatus 10. Next, in P6 related to the operation of the serviceman 90, the serviceman 90 confirms that the channel has been correctly changed in the karaoke apparatus 10 based on the change result displayed on the display 30 or the like of the karaoke apparatus 10. The

  The change of the channel related to the wireless LAN communication in the ad hoc mode in the wireless LAN network system 100 of the present embodiment described with reference to FIGS. 5 and 6 solves the problems in the conventional technology described with reference to FIG. . That is, the processes related to the operation of the service person 90 are only P1 and P6, and the operation is simple with little human work. Moreover, in the aspect which performs a channel change automatically according to the deterioration determination of the communication state between the said karaoke apparatus 10 and the said electronic sample apparatus 50, the process of P1 also concerns the operation | movement of the said karaoke apparatus 10. Further, if the confirmation of P6 is omitted, channel change control for improving the communication state with the electronic quick reference apparatus 50 can be realized without any human work. In P2, since the karaoke device 10 transmits the channel change and the time information related to the change to the electronic quick sample devices 50a and 50b, the electronic quick sample device 50 in which communication is not invalidated. Can be suitably suppressed. That is, according to the wireless LAN network system 100 of the present embodiment shown in FIG. 5 and FIG. 6, in addition to being able to eliminate the complexity due to human operation, there is an occurrence of a device in which channel changes are not reflected due to operation omission. It can suppress suitably.

  FIG. 7 is a flowchart for explaining a main part of an example of channel change control related to wireless LAN communication in the ad hoc mode by the CPU 12 of the karaoke apparatus 10, and is repeatedly executed at a predetermined cycle.

  First, in step (hereinafter, step is omitted) SA1, it is determined whether or not the communication state related to the wireless LAN communication in the ad hoc mode with the electronic sample device 50 has deteriorated. If the determination at SA1 is negative, the routine is terminated accordingly. If the determination at SA1 is affirmative, at SA2, the electronic reference device 50 is changed to the channel and its change. Time information related to the change is transmitted. Next, in SA3, a channel change (reconnection process) related to wireless LAN communication in the ad hoc mode in the wireless communication unit 46 is executed. Next, in SA4, before the specified time corresponding to the time information transmitted in SA2 elapses, radio waves related to wireless LAN communication in the ad hoc mode are transmitted by the wireless communication unit 46 on the changed channel. Done. Next, in SA5, a channel change result related to wireless LAN communication in the ad hoc mode in the wireless communication unit 46 is displayed on the display 30 or the like, and then this routine is terminated. In the above control, SA3 to SA5 correspond to the operation of the wireless LAN communication control unit 80, SA1 corresponds to the operation of the communication state determination unit 82, and SA2 corresponds to the operation of the channel change notification unit 84, respectively.

  FIG. 8 is a flowchart for explaining a main part of an example of channel change control related to wireless LAN communication in the ad hoc mode by the CPU 52 of the electronic quick sample device 50, and is repeatedly executed at a predetermined cycle.

  First, in SB1, it is determined whether or not a channel change related to wireless LAN communication in ad hoc mode and time information related to the change have been received from the karaoke apparatus 10. If the determination at SB1 is negative, the routine is terminated. If the determination at SB1 is affirmative, transmission / reception of radio waves by the wireless communication unit 70 is invalidated at SB2. . Next, in SB3, it is determined whether or not a prescribed time corresponding to the time information related to the notification received from the karaoke apparatus 10 has elapsed. When the determination of SB3 is denied, the determination is made to wait by repeating the determination of SB3. However, when the determination of SB3 is affirmed, transmission / reception of radio waves by the wireless communication unit 70 is effective at SB4. After being converted, the routine is terminated. In the above control, SB1 and SB4 correspond to the operation of the wireless LAN communication control means 86, and SB2 and SB3 correspond to the operation of the communication invalidation means 88, respectively.

  Thus, according to the present embodiment, when the karaoke device 10 as the karaoke commander changes the channel related to communication, the change of the channel and the change to the electronic quick sample device 50 as the wireless terminal are performed. After the notification by the channel change notification means 84 (SA2) for notifying the time information according to the channel change notification means 84 and before the specified time corresponding to the time information notified by the channel change notification means 84 elapses, Wireless LAN communication control means 80 (SA3 to SA5) as transmission means for transmitting radio waves on the changed channel, and the electronic sample device 50 receives a notification from the channel change notification means 84 And communication invalidation means 88 (SB2 and SB3) for invalidating transmission / reception of radio waves for a specified time corresponding to the time information. Since those have, to change the use channel in an ad hoc mode, in addition to being able to eliminate the complexity due to human manipulation, can be suitably prevent the device channel changes are not reflected is generated by the operation leakage. That is, it is possible to provide the wireless LAN network system 100 that easily changes the channel in the ad hoc mode, the karaoke device 10 as a karaoke commander, and the electronic quick sample device 50 as a wireless terminal.

  Further, since the channel change notification means 84 notifies the time for executing the channel change and the time required for the execution as the time information, in the electronic sample apparatus 50 that has received such notification, Until the preparation for communication by the channel after the change is made, it is possible to perform processing for invalidating transmission / reception of radio waves in a suitable and practical manner.

  In addition, a communication state determination unit 82 (SA1) for determining deterioration of a communication state with the electronic sample apparatus 50 is provided, and the channel change notification unit 84 causes the communication state determination unit 82 to deteriorate the communication state. When the determination is made, the change of the channel and the time information related to the change are notified to the electronic quick sample apparatus 50. In addition to being able to eliminate the complexity caused by the above, it is possible to suitably suppress the occurrence of a device in which the channel change is not reflected due to an operation omission.

  The preferred embodiments of the present invention have been described in detail with reference to the drawings. However, the present invention is not limited to these embodiments, and may be implemented in other modes.

  For example, in the above-described embodiment, the wireless LAN network system 100 including the electronic quick sample device 50 is described as a wireless terminal used as a remote operation device of the karaoke device 10, but the present invention is limited to this. However, the present invention is preferably applied to a wireless LAN network system according to another aspect. For example, the present invention is also suitable for channel change control related to wireless LAN communication in a wireless LAN network system including a mobile phone (smart phone), a tablet terminal, or the like as a wireless terminal used as a remote operation device of the karaoke apparatus 10. Applicable.

  In addition, although not illustrated one by one, the present invention is implemented with various modifications within a range not departing from the gist thereof.

  10: Karaoke device (karaoke commander), 50: Electronic sample device (wireless terminal), 80: Wireless LAN communication control means (transmission means), 82: Communication state determination means (determination means), 84: Channel change notification means ( Notification means), 88: communication invalidation means, 100: wireless LAN network system

Claims (4)

A wireless LAN network system comprising a karaoke commander and a plurality of wireless terminals used as remote control devices for the karaoke commander, and constituting a network group in an ad hoc mode,
The karaoke commander
An input device for accepting an input operation by a user;
When changing a channel related to communication in response to an input operation by the input device , the channel is disabled for each of the plurality of wireless terminals , and the channel is disabled as time information related to the change . a second specified time to start communication with one of the specified time and the changed channel, and notifying means for notifying,
After the notification by the notification means, after confirming the invalidation of the channel before the change in each of the plurality of wireless terminals, and from the first specified time notified by the notification means to the second specified time until, and transmitting means for transmitting a radio wave in the channel after change, including,
Each of the plurality of wireless terminals
When the notification by the notification means is received , after transmitting a communication invalidity notification to the karaoke commander , radio waves are transmitted during the period from the first specified time corresponding to the time information to the second specified time . A wireless LAN network system comprising communication invalidation means for invalidating transmission / reception. The karaoke commander displays the change result on the display when the channel is correctly changed.
The wireless LAN network system according to claim 1. A karaoke commander in the wireless LAN network system according to claim 1 or 2 . A wireless terminal in the wireless LAN network system according to claim 1 .

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