JP2003102074A - Remote control wireless microphone system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a remote control wireless microphone system with high reliability while precluding occurrence of crosstalk that can remotely control many wireless microphones for their on/off control or the like. SOLUTION: The remote control wireless microphone system 1 includes; a wireless microphone tuner system 2; a plurality of wireless microphones 5 connected to the system 2 through wireless communication; and an input/display device 4 connected to the wireless microphone tuner system 2 through a transmission cable. An address in hexadecimal number is given to each of many wireless microphones 5 and they are segmented into wireless microphone groups using the same frequency. The wireless microphones with the same microphone number belonging each group are identified by the same control code in a hexadecimal number and the input/display device 4 at the side of the wireless microphone tuner system 2 performs state supervision such as on/off control and a reduced capacity of battery. The system 1 is provided with a crosstalk preventing function that prevents a plurality of the microphones belonging to the game group from being activated at the same time to avoid crosstalk.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control wireless microphone system provided with a wireless microphone as an acoustic device and a wireless microphone tuner, and more specifically, it has a high function and high reliability comparable to a wire microphone. The present invention relates to a remote control wireless microphone system that is equipped and can be operated remotely.

[0002]

2. Description of the Related Art A wireless microphone has an advantage over a wire microphone (wired microphone) that it can be installed at a low cost because it does not require large-scale installation and wiring work. However, the use of the wireless microphone is limited because it has disadvantages with respect to the wire microphone as described below.

First, the currently used wireless microphone system does not have a remote control / management function.
Because of this, when using a large number of wireless microphones over a relatively wide area, it is not possible to determine which microphone is currently used, only the channel of the microphone being used. . Further, since it is impossible to turn on / off the power of the wireless microphone by remote operation, if the power of the wireless microphone is forgotten to be turned off, it cannot be turned off by remote operation.

Next, conventionally, the method of preventing interference that occurs when a plurality of wireless microphones are used in the same frequency band is only multi-channelization. That is, conventionally, in order to prevent interference that occurs when a plurality of microphones in the same frequency band are used at the same time, a wireless microphone FM transmitter adopts a PLL synthesizer method to realize multi-channel (maximum 30 channels). Corresponding by doing about the wave).

However, most facilities that use a large number of microphones currently use a plurality of microphones on the same channel or 2 to 4 channels. The reason for this is as follows.

(1) Since it is rarely necessary to use a plurality of microphones at the same time, a large number of channels is unnecessary. (2) To increase the number of channels, it is necessary to add a receiving unit on the side of the wireless microphone tuner, which causes an increase in cost and is not desired.

For this reason, a large number of wireless microphones are often used with a small number of channels, which causes interference easily.

[0008]

As described above, the conventional wireless microphone cannot be remotely controlled as compared with the wire microphone, and interference is likely to occur when a large number of microphones are used. Has a low rating. For this reason, a wire microphone is often used when used in an important place or the like, for example, when used as a stage microphone.

In view of the above points, an object of the present invention is to
The purpose is to propose a wireless microphone system with remote control and management functions.

Another object of the present invention is to propose a wireless microphone system capable of preventing the occurrence of interference.

Further, an object of the present invention is to propose a wireless microphone system which can realize multi-channels at low cost.

[0012]

In order to solve the above problems, the present invention provides a wireless microphone tuner system, a plurality of wireless microphones connected to the wireless microphone tuner system via wireless communication, and A remote control wireless microphone system, which is connected to a wireless microphone tuner system and has a remote control input of the wireless microphone and an input / display unit capable of displaying an operating state thereof, wherein a plurality of wireless microphones have hexadecimal numbers. Is used to assign a microphone address, and each wireless microphone group using the same control frequency is partitioned, and the wireless microphones included in each partition are numbered from 1 to n.
Microphone numbers up to number (n is a positive integer of 32 or less) are assigned, and the wireless microphones with the same microphone number in each section are remotely controlled by the control code with the same hexadecimal code. There is.

Here, it is desirable to have an interference avoidance control means for avoiding interference between the wireless microphones of each section using the same frequency in the plurality of wireless microphones.

The interference avoidance control means, when another wireless microphone that uses the same frequency as the operating frequency of the wireless microphone in use is turned on, the wireless microphone tuner system remotes the wireless microphone in use. It can be turned off by an operation.

Further, this interference avoidance control means is used when another wireless microphone using the same frequency as that of the wireless microphone in use is turned on by remote control from the side of the wireless microphone tuner system. It can be configured to remotely switch off an internal wireless microphone and remotely switch on another wireless microphone.

Next, in order to realize a multi-channel system at low cost, it is desirable that the voice signal transmitter of the wireless microphone tuner system and the control communication transmitter are shared. Similarly, it is desirable that a plurality of wireless microphones belonging to the same section and a control communication channel between the wireless microphone tuner system and the control communication transmission / reception channel are shared.

Depending on the installation location of the system, it may be necessary to change the audio signal frequency and the control signal frequency used between the plurality of wireless microphones and the wireless microphone tuner system during or after the installation of the system. There is also. In order to flexibly respond to such changes, the audio signal frequency and control signal frequency are
The wireless microphone tuner system may be remotely controlled by an instruction code that is a combination of the microphone address and the control code. In this case, the wireless microphone tuner system has a scanning unit that searches for a frequency that is not used among frequencies that can be wirelessly communicated, and a registration unit that assigns the wireless microphone to be changed to the frequency found by the scanning unit. Then, it is possible to automatically assign the wireless microphone to the empty section.

Further, even if interference occurs after the wireless microphone system is installed, each transmission output of the plurality of wireless microphones can be changed from the wireless microphone tuner system side by using the command code. As a result, interference can be reduced.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION An example of a remote control wireless microphone system to which the present invention is applied will be described below with reference to the drawings.

(Overall Configuration of System) FIG. 1 is an explanatory diagram showing the overall configuration and communication chart of a remote control wireless microphone system 1 of this example. The symbols in the figure have the following meanings.

8: 8 bit S: Serial data P: Parallel data R: RF signal (wireless communication section) D: Digital signal (cable transmission section)

As shown in this figure, a wireless microphone system 1 includes a wireless microphone tuner system (hereinafter referred to as an RWT system) 2 and this RW.
A display / input device 4 connected to the T system 2 via a transmission cable 3 and a plurality of remote-operated wireless microphones (hereinafter, referred to as RWM) connected to the RWT system 2 via wireless communication. 5).

In this example, control channels (control CH) 1 to control CH 6 are prepared as control channels for wireless communication, and the maximum is respectively set in the sections 1 to 6 to which the control CHs 1 to 6 are assigned. 32 R
WM5 can be assigned.

FIG. 2 is a schematic configuration diagram showing a control system of the RWT system 2. As shown in FIG. 2, the RWT system 2 has control units 21 for the number of partitions and audio signals for the number of audio channels to be controlled. The reception tuner 22 and the antenna 23 are provided. The control unit 21 includes a tuner control microcomputer 24, a modem 25, and a USART.
26, control signal transmitter 27, and control signal receiver 28
And an antenna switch 29 for transmission / reception switching, and the tuner control microcomputer 24 has all RWM off / off.
A signal is input from the reset button 30.

FIG. 3 is a schematic block diagram showing the control system of each RWM 5. As shown in this figure, the RWM 5 includes a microphone control microcomputer 51, a modem 52, a control signal receiver 53, a voice / control signal transmitter 54, and a microphone switch 55 for the voice / control signal transmitter 54. The microphone main body 56 and the voice / control signal transmitter 54 which are connected via
And an antenna 58 connected to the control signal receiver 53 via an antenna switch 57. The input port of the microphone control microcomputer 51 has a transmitter on / address transmission push button switch 61, a reset switch 62, and an address setting dial 6.
3. The battery low signal 64 is connected. Further, a transmitter-on LED 65 indicating a transmitter-on state is connected to the microphone control microcomputer 51.

FIG. 4 is an external perspective view showing the RWT system 2. The RWT system 2 of this example includes a flat rectangular parallelepiped unit case 31, and the unit case 31.
On the front 32 of the power switch 33, power on display L
An ED 34 and an RWM off / reset button 30 are arranged. An operation panel 35 of each audio signal reception tuner 22 is arranged on the front surface 32, and a reception level adjusting volume 36 and a liquid crystal display section 37 such as a partition number are arranged on the operation panel 35. Further, an operation panel 38 of the control unit 21 is arranged, and a control signal reception level adjusting volume 39 and a display section 41 are arranged here. A display / input device 4 (LCD display / touch panel) is installed on the upper surface of the unit case 31, and is connected to the RWT system 2 via a transmission cable 3 (serial data line, power supply / ground line). .

FIG. 5 shows an example of the screen of the display / input device 4. As shown in this figure, on the screen 80, a use microphone number display section 81 in which section numbers are formed horizontally and a channel number is formed vertically, a battery-reduced microphone display section 82, an operation section designation input touch panel section 83, A touch panel unit 84 in which microphone numbers (1 to 32) are arranged is arranged.

Each control unit 21 of the RWT system 2
Is the hexadecimal serial data (0
1h to DFh) is output to the display / input device 4 via the USART 26 for each section, and the display / input device 4 converts the supplied hexadecimal code into a BCD code and uses the microphone number display section 81. It has a function of displaying the microphone number (1 to 32) in the corresponding section / channel position in.

Further, when the address (horizontal series address E0h to FFh) for notifying the battery low is received, it is discriminated and the microphone number is displayed in the corresponding section column in the battery low microphone display section 82 of the display / input unit 4. It has a function to do. Further, when the section number and the microphone number are input from the touch panel section 84 of the display / input device 4, an address (horizontal series address E0h to FFh) for remote on / off operation from the serial output port corresponding to the input section. It has a function to send.

Next, FIG. 6 is an external perspective view showing the RWM 5, a partial side view thereof, and a partial perspective view showing its operating portion. The operation section formed on the side surface of the RWM 5 includes a transmitter ON indicator LED 65, a transmitter ON / address transmission push button switch 61, and a RWM power switch 6.
6 are arranged. Further, an erroneous operation preventing frame 67 and a slip preventing projection 68 are formed on the operation portion.
The cylindrical case 69 on the lower side of the RWM 5 of this example is a screw-in type. When the cylindrical case 69 is removed, the microcomputer reset switch 62, the address setting dial 63 and the group channel setting dial 70 (in the case of the PLL system) are set. The arranged operation surface is exposed.

(Control Channel Classification Setting and Microphone Address Setting Method) In the wireless microphone system 1 configured as described above, the transmission / reception control channel classification and the addresses of a large number of RWMs 5 are set. Based on this, remote control of each RWM 5 is performed.

That is, as shown in FIG. 7 and FIG.
In the system 1 of this example, the microphone address and the control code are set using hexadecimal numbers in each section (control channels CH1 to CH6). A maximum of 32 RWMs 5 are registered and managed in the hexadecimal numbers 01h to DFh in the hexadecimal code table of FIG. 7, and are controlled by one control channel. These 32 RWM5
One control channel managed by the above is referred to as one partition.

As can be seen from the channel address setting table of FIG. 8, each section has seven voice communication channels and one control communication transmission / reception channel. The RMW 5 included in each partition can be distributed to a maximum of 6 or 7 voice communication channels. Here, since interference may occur between the RWMs 5 used on the same channel, that is, the same frequency, the interference avoidance control operation described later is performed between the RWMs 5 used on the same frequency. Specifically, in each column 01h to 1Fh in FIG. 8, 20h to 3Fh, 40h to 5Fh, 60h to 7Fh, 80h to 9Fh, and A0h to BFh. During C0h to DFh. These vertical series are RW of the same frequency
It is a group of M addresses (microphone addresses), which correspond to the voice communication channels 1 to 7, respectively.

On the other hand, the horizontal series in the table of FIG. 8 represents the RWM 5 to which the same RWM number (microphone number) is assigned in each voice communication channel 1 to 7. Therefore, by using 32 addresses E0h to FFh in the eighth control communication transmission / reception channel, a plurality of RWMs belonging to each of the voice communication channels 1 to 7 are used.
5 can be specified. As described above, in the present example, the 32 hexadecimal numbers assigned to the respective voice communication channels 1 to 7 and the 32 hexadecimal numbers assigned to the single control communication transmission / reception channel 8 are used for the respective voices. Communication channel 1
To identify each RWM5 in
The T system 2 is remotely controlled and managed. Further, by using 32 control codes E0h to FFh belonging to the control communication transmission / reception channel, it is possible to transmit the data indicating the battery exhaustion from each RWM 5 to the RWT system 2.

In this example, the vertical series from 20h to 3Fh of the voice communication channel 2 is referred to as "reference vertical series", and the standard vertical series is commonly used in processing such as microphone number display. ing. This is because there is no RWM with the address 00h representing the microphone number 1 in the voice communication channel 1, and therefore the voice communication channel 1 (first vertical series) is difficult to use. For example, if the number of channels used is less than 6 channels per partition,
As shown in FIG. 9, it is desirable to set the channel address so that the second vertical series and the subsequent ones are used without using the first vertical series.

FIGS. 9, 10 and 11 show an example in which the channel address setting method of this example is applied to the frequency utilization standards of the Radio System Development Center and the Japan Electrical Machinery Manufacturers Association. Is shown.

(Communication / control operation between RWT and RWM) FIG. 12 shows a basic communication / control operation performed between the RWT system 2 and each RWM 5 in the system 1 of this example. Basically, as shown in FIG. 12A, when the RWM 5 is used, when the power switch 66 of the RWM 5 is turned on and the transmitter on / address transmission push button switch 61 is pressed, the RWM 5 is turned on. One of the pre-assigned addresses 01h to DFh is transmitted to the RWT system 2. RW
The T system 2 side holds the received address of the RWM 5 in the memory and displays it. This RWM
In the case of turning off 5, when the transmitter on / address transmission push button switch 61 is operated again, the microphone address is transmitted again to the RWT system 2, and the RWT system 2 receives the microphone address,
The address is erased from the memory and the display of the microphone address is erased.

Here, since interference between a plurality of RWMs 5 occurs in the following cases, the interference avoidance operation is performed in this case in this case.

In the first case, RWM5 using the same frequency
When another RWM5 using the same frequency is turned on during use of one of the two, that is, when one of the RWM5s belonging to each vertical series in the channel address setting table of FIG. 8 is used, another RWM5 is turned on. If you do, interference will occur.

In the second case, when one RWM 5 is used, interference is generated when the RWT system 2 side remotely operates another RWM 5 using the same frequency.

As shown in FIG. 12A, the interference avoidance operation in the first case in the system 1 of the present example is performed by turning on the transmitter of the RWM5 using the same frequency,
The microphone address is sent from the RWM5, and this is sent to R
When the WT system 2 receives the command, it transmits to the pre-registration RWM5 an instruction to remotely turn off the RWM5 (referred to as pre-registration RWM) using the same frequency that is being used, and the pre-registration RWM5 is Turn off. At the same time, the RWT system 2 performs memory update and display update processing. As a result, RWM using the same frequency
Since only one is always on, it is possible to prevent interference between microphones.

The interference avoiding operation in the second case of the system 1 is performed when the RWM using the same frequency is in the ON state as shown in FIG. 12 (b).
From the RWT system 2 side, another RW using the same frequency
This is the case where M5 is turned on by remote control. When the RWM5 is turned on by remote control, its microphone address is set to R
The data is sent back to the WT system 2 and the interference avoidance control similar to the case of the above (a) is performed. Upon receiving this microphone address, the RWT system 2 stores the microphone address and displays it. Also in this case, since there are no cases where a plurality of RWMs using the same frequency are simultaneously turned on, interference can be prevented in advance.

(Control System of RWM) As shown in FIG. 3, the control system in the RWM 5 of this example has a configuration in which a voice signal transmitter and a control communication transmitter are shared. That is, a voice communication channel and a control communication transmission / reception channel are set in advance, and at the time of communication, a channel switching signal is output from the output port of the microphone control microcomputer 51, and this is output to the microphone switch 55, the voice / control signal transmitter 54, and It is supplied to the antenna switch 57. During voice signal communication, the microphone switch 55 is turned on, the antenna switch 57 is turned on, and the voice / control signal transmitter 54 is set to the voice signal transmission mode. The audio signal from the microphone body 56 is supplied to the audio / control signal transmitter 54 via the microphone switch 55, and from there, the RW via the antenna 58.
It is transmitted to the T system 2.

On the contrary, when transmitting the control signal, the microphone switch 55 is turned off, the antenna switch 57 is turned off, the voice / control signal transmitter 54 is switched to the control signal transmission mode, and the control signal from the microphone control microcomputer 51 is transmitted. It is supplied to the voice / control signal transmitter 54 via the modem 52 and from there, via the antenna 58 to the RWT system 2.
Sent to.

When the control signal is received from the RWT system 2, the control signal is input to the control signal receiver 53 via the antenna 58 and the antenna switch 57, and from there, is input to the microphone control microcomputer 51 via the modem modem 52. A control process corresponding to the control signal is performed.

(Sharing of Control Channels) In this example, the control channels (control channels CH1 to CH6 shown in FIG. 1) between the plurality of RWMs 5 and the RWT system 2 in the same section are shared. The control communication transmission / reception channel (8th channel in the channel / address setting table shown in FIG. 8) is also shared. As a result, in the system 1 of the present example, one control channel can be shared in the same section, and furthermore, transmission / reception of control signals can be made a common channel.

When the number of the control communication transmission / reception channels is set to one in this way, the control signal receiver 53 of the RWM 5 has another R channel.
Unwanted signals such as signals from the WM5, signals from the RWT system 2 to other RWM5, and signals from the own transmitter 54 to the RWT system 2 come in. Similarly, the control signal receiver 28 of the RWT system 2
May also receive its own signal.

Therefore, in the RWM 5 of this example, the control signal is discriminated by the address, and if the signal is not related, the processing control is performed so as to promptly return from the reception interrupt processing. In addition, in order to prevent receiving its own transmission signal, either a reception interrupt is prohibited at the time of transmission, or a method at the time of transmission is performed by interrupt processing to prevent the occurrence of multiple interrupts. is doing.

In addition to this, each control timing is as follows. That is, in the case of a process in which the RWT system 2 continuously performs remote control on a plurality of RWMs 5, the return time (time lag) from the reception interrupt of the RWM 5 is sufficiently considered.

Further, in this example, the control signal transmission time is shortened and the recovery is prevented by speeding up the channel switching, shortening the frequency stabilization time, and shortening the power supply rise time. . In addition to this, switching of the antenna switch prevents self-reception, and switching of the microphone switch prevents collision between the voice modulation signal and the control modulation signal.

(Control Operation of System 1) Next, FIGS. 13 to 16 are flowcharts showing the control operation of the RWT system 2, and FIGS. 17 (a) and 17 (b) are communication I / O of the tuner control microcomputer 24. O port table and display
18 is a communication I / O port table of the control microcomputer of the input device 4, and FIG. 18 is a memory list used in the tuner control microcomputer 24. Further, FIG. 19 shows the RWT system 2
It is explanatory drawing which shows the memory structure between the display and the input device 4.

Here, steps ST2 (FIG. 13), ST
12 (FIG. 14) and ST17 (FIG. 14), the flow chart of the transmission process is shown in FIG.
This is a case where the SK system is adopted, and the processing procedure differs depending on the modem modulation / demodulation system. In addition, the battery low notification in step ST14 (FIG. 14) is carried out at the same time as the battery low detection in any RWM 5, as shown in FIG. 5, the microphone number is displayed in the low battery corresponding section of the display / input unit 4 for several seconds. It is displayed and at the same time a buzzer sounds to warn. Further, step ST15 (see FIG.
In 4), the specification of the partition is inevitably determined from the system configuration on the hardware by the data input port. Therefore, by designating a section from the display / input unit 4 and further by designating a microphone number to be operated, a specific R of a particular section can be specified.
Transmitter on / off operation is possible for WM5. This is because the state is saved on the RWM 5 side (memory CD), and the RWT side is constantly monitoring the state of the RWM 5.

On the other hand, the interrupt process of serial data reception is performed by the procedure shown in FIG. 15. In steps ST22 to ST24 of this process, various communication errors are detected and parity check is performed. This prevents erroneous data transmission, erroneous operation due to noise, and runaway. Also, if data transmission / reception fails, a resend request, data resend, and re-reception are performed if necessary. However, in the processing of this example,
Even if the control communication is not successful, the voice wireless transmission function which is the original function of the RWM is guaranteed.

20 to 24 are flowcharts showing the control operation of the RWM 5, FIG. 25 is an ON / OFF judgment table of the address transmission push button switch of the transmitter, and FIG. 26 is used by the control microcomputer 51. Memory list. Further, FIG. 17C shows an I / O table for RWM microcomputer communication.

Here, in the unique address registration in step ST43 (FIG. 20), the lateral series address of RWM5 or the standard series unique address cannot be externally set. Since there is no address 00h, it is desirable to use 20h to 3Fh as the reference vertical series. That is, in the microcomputer 51, other 01
h to 1Fh, 40h to DFh are converted into a standard vertical series and processed.

The process of transmitting the unique address by the RWM transmitter on-address transmission push button switch 61 in step ST46 (FIG. 20) can also be realized as an interrupt process. Further, in this step, the determination as to whether or not the switch has been pressed is made not by the state value of the input port but by its state change as shown in FIG. Further, in order to prevent the switch chattering, for example, it is desirable to perform the read determination twice with an interval of 10 ms.

A data transmission flowchart at the end of use of the microphone as in step ST49 (FIG. 20) and step ST62 (FIG. 21) is shown in FIG. 23 (a). This transmission processing is performed when the MSK method is adopted, and if the modem modulation / demodulation method is different, it is different accordingly.

Further, steps ST54 and ST65 (see FIG.
The data transmission control at the start of use of the microphone as in 1) is performed by the procedure shown in FIG. Also in this case, the transmission process adopts the MSK system, and if the modem modulation / demodulation system is different, the processing is also different accordingly.

The data transmission control at the time of battery exhaustion in step ST58 (FIG. 21) is performed according to the procedure shown in FIG. Also in this case, the MSK system is adopted, and if the modem modulation / demodulation system is different, the processing procedure is also different accordingly.

In step ST72 (FIG. 22), detection of various communication errors and parity check are performed. This prevents erroneous data transmission, erroneous operation due to noise, and runaway. Also, if data transmission / reception fails, a resend request, data resend, and re-reception are performed if necessary. However, in the processing of this example, the voice wireless transmission function which is the original function of the RWM is guaranteed even if the control communication is not successful.

(Communication / Control Timing) Next, FIG. 27 shows a condition table of communication / control timing in the system 1 of this example. Condition (a) in FIG. 27 (a)
Are necessary to ensure that the RWT reset and all RWM transmitter off command operations are performed.

T2R-1R: Transmitter OFF command code transmission interval to RWM5 t6RM-7RM: Return time accompanying signal reception to another RWM in RWM reception interrupt

In the RWT system 2, the transmitter off command is continuously transmitted by loop processing, but in the RWM 5, another R is transmitted.
Since the signal to the WM 5 is also received, the transmitter off command code signal cannot be properly received unless this time lag is entered.

The condition (b) in FIG. 27 (a) relates to interference avoidance control when a certain address is sent from a newly used RWM while a certain RWM (pre-registered RWM) is in use or when the transmitter is on. Is.

T2R-3R-4R: Time to shift to interference avoidance control by reception from RWM and send transmitter off command to pre-registered RWM t6RM-7RM: Receive signal from other RWM at RWM reception interrupt Return time tmsbig2: Time lag after transmission at end of RWM use

The first condition in condition (b) is that the address signal from the newly registered RWM is also received by the pre-registered RWM and a reception interrupt occurs, so that the pre-registration is performed after the interrupt processing return time ends. This is the minimum requirement for sending a transmitter off-address command from the RWT system 2 to the RWM.

The second condition is that, in the same situation as the first condition, when the transmitter off command is sent from the RWT system 2 to the pre-registered RWM, the transmitter of the newly registered RWM switches to the voice channel. Is a time lag necessary for carrier waves to not collide.

The condition (c) in FIG. 27A is RW
This is a time lag condition in the transmission processing to M (FIG. 16).

Ttsend1: Time lag before transmission ttsend2: Time lag after transmission tsw: Switching time of antenna changeover switch tp + tf: Time including transmitter power supply rise time and frequency stabilization time tSD: Serial data transmission time

Next, the condition table of FIG. 27B will be described. First, the condition (a) is that in the RWM transmission process,
It is a time lag condition regarding a transmission preparation period for wireless data transmission.

Tmsend1: Time lag before transmission at the end of RWM use tmsend2: Time lag after transmission at the end of RWM use tmsbig1: Time lag before transmission at the start of RWM use tmsbig2: Time lag after transmission at the start of RWM tmsbat1: Time lag before transmission of RWM battery tmsbat2: Time lag after transmission of RWM battery reduced data tsw: Time including channel changeover switch, antenna changeover switch, microphone switch changeover time, or cumulative time tp: Transmitter power supply rise time tf: Frequency stabilization during frequency change in power rise state Time tSD: Serial data transmission time

The condition (b) in FIG. 27 (b) is a time lag when the used RWM address data transmission and the battery depletion notification address data transmission are successively performed. R
The WT system 2 receives the used RWM address data from the RWM and performs memory processing, interference avoidance processing,
It is necessary to prevent the traffic jam and the display error of the display device 4 by transmitting the battery low notification address after the display process is completed.

T1RM-5RM: Time from transmission of RWM address at end of use to transmission of battery low notification address t2RM-5RM: Time from transmission of start-of-use RWM address to transmission of battery low notification address t3RM-5RM: Remotely off, RWM address Time from transmission to battery low notification address transmission t4RM-5RM: When remote ON, time from RWM address transmission to battery low notification address t6R-7R: RWT serial data reception interrupt time t2R-5R | max: RWT main routine 2R- 5
Maximum processing time in R processing

(Function and Effect of Present System 1) The specific usefulness of the RWM transmitter remote on / off operation function in the system 1 of the present example will be described. This operation is consistent with the operation at hand, and the state is hexadecimal code (00h to FFh) in the RWM microcomputer memory (CD) whether it is turned on or off at hand or turned on or off remotely.
Will be stored in, so even if you turn it on remotely,
There is no problem even if it is turned on at hand and turned off remotely.

Further, since the operation section is designated and the operation is performed for each section in the lateral series, the current frequency of the same frequency (the same longitudinal series) is automatically specified by one RWM and automatically controlled by the remote interference prevention control. On RWM is off.

When the pre-registered RWM of the same frequency is turned off by performing the remote ON operation continuously and the interference avoidance control is used in a plurality of sections and the quick operation is performed, it is performed simultaneously in each section. Interference avoidance control may occur.
However, different partitions use different control channels, so there is no problem.

If possible, the interference control avoidance control for remote operation is instantaneous if the pre-registered RWM transmitter of the same section and the same frequency (same vertical series) is turned off and then the newly registered RWM transmitter is turned on. It is desirable because it will not generate noise due to excessive interference.

As described above, when the remote control is performed by positively utilizing the interference avoidance control, it is easy to perform the remote control if the channels and the microphone allocation table are properly distributed over a plurality of channels. It will also solve the problem in the wireless microphone system of.

This point will be described in more detail with reference to FIG. If the arrangement and channel / microphone number assignment shown in this figure are adopted, a stand microphone (main and sub) on the stage and a moving microphone (4
Stand) and the microphones for the audience (15 sets) can be remotely controlled in each group, and interference avoidance control (only one RWM in the ON state at any time) is performed in each group. You can easily operate the microphone on the stage. That is, in the conventional technique, when using a plurality of microphones on the stage to prevent howling,
It was difficult to operate the volume, and it was necessary to lower the volume level of the unused microphone as much as possible, but if the method of this example is adopted, it can be operated remotely so that only one microphone can be turned on at any time. Very easy to operate.

[0080]

Next, an embodiment to which the remote control wireless microphone system 1 according to the present invention having the above-mentioned structure is applied will be described.
Table 1 shows the specifications of each device in the system of this example.

[0081]

[Table 1]

FIG. 29 shows a channel address table in the system of this example. Channel allocation is determined based on this table, and addresses are set accordingly. This table describes the current address / channel setting status. In addition, a placement table is created so that the microphone position can be specified from the display. As described above, it is desirable not to use the first vertical series (addresses from 01h to 1Fh), but in this example, the exceptional first vertical series is also included.

30 and 31 show block diagrams of the RWT system and each RWM in the system of this example. Further, these control flowcharts are shown in FIGS.

(Other Embodiments) In the above remote control wireless microphone system 1, a plurality of RWMs are used.
In order to allocate 5, a channel address table is created to avoid interference with adjacent frequencies and interference due to use of the same frequency. However, depending on the installation location of the system, multiple R
In some cases, it may be necessary to change the voice signal frequency and the control signal frequency (control communication transmission / reception channel) used between the WM 5 and the RWT system 2. In order to flexibly deal with such a change, it is convenient that the voice signal frequency and the control signal frequency assigned to the RWM 5 can be changed by remote control. The change of the voice signal frequency and the control signal frequency of the RWM 5 can be performed from the RWT system 2 side by using an instruction code in which a microphone address using a hexadecimal number and a control code are combined. In this case, by configuring an empty channel scanning unit on the RWT system 2 side and a registration unit that allocates RWM5 to the empty channel found by this empty channel scanning unit, automatic allocation of voice signal frequencies and control signal frequencies to the RWT5 is performed. Will be possible.

Further, even if interference occurs after installing the wireless microphone system, the microphone address,
Interference can be reduced by changing the transmission output of the plurality of RWMs 5 from the RWT system 2 side by using the instruction code that is a combination of control codes.

The voice signal frequency and control signal frequency of the RWM5 and the transmission output can be changed by changing the RWM5 to the input / display unit 4.
It suffices to form a microphone information display section for displaying the set value of the audio signal frequency and the control signal frequency and the transmission output, and an input section for changing and inputting the set value of the microphone information display section.

[0087]

As described above, in the remote control wireless microphone system of the present invention, a wireless microphone group that uses the same frequency while assigning an address to each wireless microphone that is remotely controlled using hexadecimal numbers. The wireless microphones having the same microphone number in each section are specified by using the same control code using a hexadecimal number. Therefore, according to the present invention, it is possible to specify a plurality of wireless microphones and remotely operate each wireless microphone individually to perform status monitoring such as on / off control and battery depletion.

Further, in the present invention, it is possible to prevent two or more wireless microphones belonging to the same section using the same frequency from being turned on at the same time so that only one wireless microphone is always turned on. Therefore, the interference of the wireless microphone can be prevented.

Further, according to the present invention, since the transmitter / receiver of each wireless microphone is shared, the manufacturing cost can be reduced. Similarly, since the control communication channel and the control communication transmission / reception channel are shared between the wireless microphone tuner system and a plurality of wireless microphones, the device configuration can be simplified and the manufacturing cost can be reduced.

Further, by using the instruction code in which the microphone address and the control code using hexadecimal numbers are combined, it is possible to change the voice signal frequency and the control signal frequency and the transmission output of the plurality of wireless microphones.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an overall configuration and a communication chart of a wireless microphone system to which the present invention has been applied.

FIG. 2 is a schematic configuration diagram showing a control system of the RWT system of FIG.

FIG. 3 is a schematic configuration diagram showing a control system of the RWM in FIG.

FIG. 4 is a schematic perspective view of the RWT system of FIG. 1.

5 is an explanatory diagram showing a screen example of the display / input device of FIG. 1. FIG.

6 is an external perspective view of the RWM in FIG. 1. FIG.

FIG. 7 is an explanatory diagram showing a hexadecimal code table used in the present invention.

FIG. 8 is an explanatory diagram showing a channel address setting table used in the present invention.

FIG. 9 is an explanatory diagram showing another example of channel address setting.

FIG. 10 is an explanatory diagram showing another example of channel address setting.

FIG. 11 is an explanatory diagram showing another example of channel address setting.

12 is an explanatory diagram showing a communication / control operation in the system of FIG.

13 is a flowchart showing a control operation of the RWT system of FIG.

14 is a flowchart showing a control operation of the RWT system of FIG.

FIG. 15 is a flowchart showing an interrupt process for serial data transmission.

FIG. 16 is a flowchart showing a procedure of transmission processing to RWM.

FIG. 17 is an explanatory diagram showing an RWT control microcomputer communication I / O port table and a display / input unit microcomputer communication I / O port table.

FIG. 18 is an explanatory diagram showing a used memory list of the RWT control microcomputer and a used memory list of the control microcomputer of the display / input device.

FIG. 19 is an explanatory diagram showing a memory configuration of an RWT and a display / input device.

FIG. 20 is a flowchart showing a control operation of RWM.

FIG. 21 is a flowchart showing the control operation of the RWM.

FIG. 22 is a flowchart showing an interrupt process for receiving serial data.

FIG. 23: RW at end and start of use of microphone
It is a flowchart which shows the transmission process to T.

FIG. 24 is a flowchart showing a transmission process to the RWT when the microphone battery is low.

FIG. 25 is an explanatory diagram showing an ON / OFF determination table of a transmitter / address transmission push button switch.

FIG. 26 is an explanatory diagram showing a used memory list of the RWM control microcomputer.

FIG. 27 is an explanatory diagram showing a condition table of communication / control timing.

FIG. 28 is an explanatory diagram showing an example of a created chart when the remote control function is used.

FIG. 29 is an explanatory diagram showing a channel address setting table in the embodiment of the present invention.

FIG. 30 is a block diagram of an RWT system according to an embodiment of the present invention.

FIG. 31 is a block diagram of an RWM according to an embodiment of the present invention.

FIG. 32 is a flowchart showing a control operation of the RWT system in the example of the present invention.

FIG. 33 is a flowchart showing a control operation of the RWT system in the example of the present invention.

FIG. 34 is a flowchart showing a control operation of the RWT system in the example of the present invention.

FIG. 35 is a flowchart showing a control operation of the RWT system in the example of the present invention.

FIG. 36 is a flowchart showing interrupt processing at the time of reception in the embodiment of the present invention.

FIG. 37 is a flowchart showing the control operation of the RWM in the embodiment of the present invention.

FIG. 38 is a flowchart showing interrupt processing at the time of receiving a RWM in the embodiment of the present invention.

[Explanation of symbols]

1 Remote Control Wireless Microphone System 2 RWT System 3 Transmission Cable 4 Display / Input Device 5 RWM 24 RWT Control Microcomputer 27 Control Signal Transmitter 28 Control Signal Receiver 29 Antenna Switch 51 RWM Control Microcomputer 54 Voice / Control Signal Transmitter 55 Microphone Switch 57 antenna switch 61 transmitter on / address transmission push button switch 80 display screen 81 used microphone number display section 82 battery low microphone display section 84 touch panel

Continued front page    (71) Applicant 501229171             Masahiro Yasukawa             803-1 Miki, Kawanakajima-cho, Nagano City, Nagano Prefecture (72) Inventor Masahiro Yasukawa             803-1 Miki, Kawanakajima-cho, Nagano City, Nagano Prefecture F term (reference) 5D020 BB02                 5K048 AA04 AA09 BA02 DC01 EB01                       EB02 FB05 HA31

Claims (13)

[Claims] 1. A wireless microphone tuner system,
A plurality of wireless microphones connected to the wireless microphone tuner system via wireless communication, and an input / display device that is connected to the wireless microphone tuner system and is capable of remote control input of the wireless microphones and operation status display thereof. A remote control wireless microphone system having a plurality of wireless microphones is provided with a microphone address using a hexadecimal number, and the wireless microphones are divided into wireless microphone groups that use the same control frequency, and are included in each division. Microphone numbers from 1 to n (n is a positive integer of 32 or less) are assigned to the wireless microphones, and the wireless microphones having the same microphone number in each section are controlled by the same hexadecimal code. A remote control wireless microphone system characterized by being remotely controlled. 2. The remote control according to claim 1, further comprising interference avoidance control means for avoiding interference between wireless microphones of each section using the same frequency in the plurality of wireless microphones. Wireless microphone system. 3. The wireless interference tuner control system according to claim 2, wherein the interference avoidance control means is used by the wireless microphone tuner system when another wireless microphone that uses the same frequency as the operating frequency of the wireless microphone being used is turned on. A remote-controlled wireless microphone system characterized by turning off the wireless microphone inside by remote control. 4. The interference avoidance control means according to claim 2 or 3, wherein another wireless microphone that uses the same frequency as the operating frequency of the wireless microphone in use is remotely operated from the wireless microphone tuner system side. The remote control wireless microphone system is characterized in that when it is turned on, the wireless microphone being used is turned off by remote control and another wireless microphone is turned on by remote control. 5. The remote control wireless microphone system according to claim 1, wherein an audio signal transmitter and a control communication transmitter of the wireless microphone tuner system are shared. . 6. The control communication channel and the control communication transmission / reception channel between a plurality of wireless microphones belonging to the same section and a wireless microphone tuner system according to claim 1. The remote control wireless microphone system is characterized by being. 7. The audio signal frequency and control signal frequency used between a plurality of wireless microphones belonging to the same section and a wireless microphone tuner system according to any one of claims 1 to 6, A remote control wireless microphone system characterized in that the wireless microphone tuner system is remotely controlled by an instruction code which is a combination of a microphone address and the control code. 8. The wireless microphone tuner system according to claim 7, wherein the wireless microphone tuner system assigns a scan unit that searches for an unused frequency in a wireless communicable frequency and a wireless microphone to be changed to the frequency found by the scan unit. A remote control wireless microphone system having a registration unit. 9. The remote control wireless microphone system according to claim 7, wherein the transmission output of each of the plurality of wireless microphones is changed from the wireless microphone tuner system side using the instruction code. 10. A wireless microphone tuner system for use in the remote control wireless microphone system according to claim 1. Description: 11. A wireless microphone for use in the remote control wireless microphone system according to claim 1. Description: 12. An input / display device used in the remote control wireless microphone system according to claim 1, wherein the used microphone number display indicates the wireless microphone number being used. An input / display unit comprising: a unit, a battery-reduced microphone number display unit for displaying a wireless microphone number in a battery-reduced state, and a touch panel unit for designating and inputting a wireless microphone to be controlled. 13. The microphone information display unit according to claim 12, which displays a set numerical value such as a microphone address, a voice signal frequency and a control signal frequency of a wireless microphone to be controlled, and a microphone information display unit of the microphone information display unit. An input / display unit having an input unit for changing and inputting set numerical values.