JP2004040212A - Walkie-talkie - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To set communication conditions of a plurality of radio apparatus provided in a radio communication system by a remote control. <P>SOLUTION: A communication condition select switch 5 and a touch panel 4 receive settings of communication conditions. A mode controller 8 and transmission format generator 9 transmit the received communication conditions to a communication party via an RF unit 14. A transmission signal discriminator 10 receives answer of the communication conditions from the communication party, compares the received communication conditions with the transmitted communication conditions, and changes the settings of the RF unit 14 according to the communication conditions, if the communication conditions coincide as the comparison result. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a technology configured in a communication mode in which one wireless device serves as a master wireless device and one or a plurality of opposed wireless devices serves as a slave wireless device, and particularly to a technology capable of remote control.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a wireless communication system in which one wireless device serves as a master wireless device and one or a plurality of wireless devices facing the master wireless device serves as slave wireless devices has been constructed. In this communication system, when an operator sets communication conditions such as a channel, a communication mode, a modulation method, and a data rate of a master radio and a slave radio, a touch panel, a rotary switch, and the like provided for each radio are used. Direct communication conditions are entered and set. Also, when changing the communication conditions, the operator directly inputs the communication conditions to each of the plurality of wireless devices to perform setting and switching.
[0003]
[Problems to be solved by the invention]
However, in the above-described wireless communication system, the setting and switching of the communication conditions of the wireless devices are manually performed using the touch panel, the rotary switch, and the like of all the wireless devices, so that a human error such as a setting error may occur. There is.
[0004]
In addition, even when communication is once established, when the communication conditions are changed, each of the plurality of slave wireless devices is manually set, so that the installation location of the slave wireless device may not be unmanned.
[0005]
Accordingly, it is an object of the present invention to provide a technique that enables an operator to set communication conditions for each of a plurality of wireless devices without directly inputting communication conditions to each of the plurality of wireless devices.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention enables a communication condition of each of a plurality of wireless devices to be set by remote control. For example, the wireless device of the present invention performs communication according to a set communication condition among a plurality of types of communication conditions. Receiving means for receiving the setting of the communication condition; storage means for storing the received communication condition; transmitting means for transmitting the communication condition stored in the storage means to a communication partner; and Receiving means for receiving a reply of the communication condition, comparing means for comparing the communication condition received by the receiving means with the communication condition stored in the storage means, a result of the comparison by the comparing means, received by the receiving means Switching means for switching to the communication condition when the communication condition thus set matches the communication condition stored in the storage means.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0008]
FIG. 1 shows a configuration diagram of a communication system using a master wireless device and a plurality of slave wireless devices according to an embodiment of the present invention. FIG. 1 shows a wireless communication system configured in a communication mode in which one wireless device becomes a master wireless device 1 and one or more opposed wireless devices become slave wireless devices. In FIG. 1, the wireless communication system includes a master wireless device 1 and a slave wireless device group 17 that perform wireless communication.
The slave wireless device group 17 includes a plurality of slave wireless devices 171 to 174. The master wireless device 1 can set communication conditions for the other slave wireless devices 171 to 174 by remote control. Each of the slave wireless devices 171 to 174 can perform wireless communication with the master wireless device 1 and other slave wireless devices, and stores communication conditions set by the master wireless device 1.
[0009]
FIG. 2 shows a configuration diagram of the master radio 1 according to the embodiment of the present invention. In FIG. 2, a master wireless device 1 includes an interface unit 2 for connecting a storage device 3, a touch panel 4 of an input unit for receiving an input, a communication condition select switch 5 for selecting a communication condition, and software. A load switch 6 for loading, an input control unit 7 for controlling an input, a mode control unit 8 for controlling a mode, and a transmission format generation unit 9 for generating a transmission format for communicating with another wireless device A transmission signal determination unit 10 that determines a destination included in the transmission signal, a CPU 11 that is a control unit, a switching communication condition storage unit 12 that stores communication conditions for instructing the slave wireless devices 171 to 174, A matching unit 13 for determining whether the communication conditions transmitted to the slave wireless devices 171 to 174 match the returned communication conditions; Includes an RF unit 14 for transmitting and receiving, the display 15 is a display unit for displaying the communication condition or the like, an output unit 20 for inputting and outputting the radio data, an antenna 21 for transmitting and receiving radio waves, a.
[0010]
The storage device 3 is a device connected to the master wireless device 1 and to which a removable storage medium such as a flexible disk or a CD-ROM is mounted. The storage medium stores software such as an execution program and default values of communication conditions. Further, a storage unit such as a hard disk may be provided inside the master wireless device 1.
[0011]
The hardware configuration of the master wireless device 1 includes a wireless device having a data input / output interface and an information processing device having a CPU, a memory, and the like. In FIG. 2, the master radio 1 normally modulates the data input from the input / output unit 20 by the RF unit 14 according to the set communication conditions, sends out the modulated radio data from the antenna 21, The wireless data received from the devices 171 to 174 is demodulated by the RF unit 14, and the demodulated data is transmitted from the input / output unit 20. The configuration of each of the slave radios 171 to 174 has the same configuration as the configuration of the master radio 1. In this case, registration of whether the wireless device is a master wireless device or a slave wireless device is made in the mode control unit 8 via the touch panel 4 in advance. In accordance with the registration, the mode control unit operates as a master wireless device when registered as a master wireless device, and operates as a slave wireless device when registered as a slave wireless device.
[0012]
In the present embodiment, when the communication condition select switch 5 receives a communication condition setting instruction from a user (operator), the master wireless device 1 wirelessly sets communication conditions for the other slave wireless devices 171 to 174. . The communication conditions include, for example, a channel indicating a frequency band, a communication mode indicating an encryption method, a modulation method, a data rate indicating a communication speed, and transmission power. As the channel, for example, a plurality of types of channels may be set in advance from a band of 30 MHz to 90 MHz, and any one of the channels may be selected, or the frequency band may be received as a numerical value. In the communication mode, whether or not encryption is performed at the time of communication, or when a plurality of types of encryption methods are provided, an encryption method to be used may be selected. When a plurality of modulation schemes such as AM modulation and FM modulation are provided, selection of a modulation scheme to be used is accepted. For the data rate, for example, a plurality of types of data rates among 1.2 kbps to 9.8 kbps may be set in advance, and any one of the data rates may be selected. Is also good. As the transmission power, any one of a plurality of transmission powers such as 1 W, 10 W, and 50 W may be selected, or a transmission power value may be directly received. The RF unit 14 has a configuration that can change each of these channels, communication mode, modulation scheme, data rate, and transmission power according to communication conditions.
[0013]
These communication conditions are set by the communication condition select switch 5 and the touch panel 4 shown in FIG. Further, the communication condition may be stored in the storage device 3 in advance as a default value. Communication conditions can be set for the master wireless device 1 and the slave wireless devices 171 to 174, respectively. The communication condition select switch 5 can select the content to be set by the switch position. When the position is set to the position 51, the default value (reference communication condition) of the master wireless device 1 stored in the storage device 3 is read out to the mode control unit 8. When the position is set to the position 52, the setting of the communication condition of the master wireless device 1 is accepted from the touch panel 4, and the communication condition is set in the mode control unit 8. When set to the position 53, the communication conditions to be set in the slave wireless devices 171 to 174 are read out, and the read out communication conditions are stored in the switching communication condition storage unit 12. When the position is set to the position 54, the setting of the communication conditions of the slave wireless devices 171 to 174 is received from the touch panel 4. When the position is set to the position 55 and the load switch 6 is pressed, the slave wireless devices 171 to 174 are instructed to distribute the set communication conditions. When set to the position 56, the master wireless device 1 and the slave wireless devices 171 to 174 are instructed to switch to the newly set communication conditions. When the position is set to the position 57, the instruction is issued to the slave wireless devices 171 to 174 to retransmit the communication conditions when an error occurs during distribution.
[0014]
FIG. 5 shows an external view of the master radio 1. In FIG. 5, a communication condition select switch 5 is constituted by a rotary switch, and sets the above-mentioned contents when set to a position indicated by an arrow. The communication condition select switch 5 performs normal wireless communication when in the standby position, and turns off the power of the master wireless communication when in the OFF position. The touch panel 4 includes numeric keys 0 to 9, a plurality of function keys 503, and a load switch 6. The touch panel may be configured by a keyboard or the like. Function keys 503 include a menu key for displaying a predetermined menu, a frequency key for setting a frequency band of communication conditions, a time key for setting the current time, and a clear key for canceling the set contents. And an enter key for executing the set contents. The display 15 is a display unit, and displays input contents, menus, and the like. For example, when the communication condition select switch 5 is set to the position 52, the display 15 displays options of a channel, an encryption method, a modulation method, a data rate, and a transmission power of a communication condition to be accepted. Further, the display 15 may display a blank for each communication condition in order to indicate that the numerical value of each communication condition is acceptable.
Next, a process in which the master wireless device 1 sets communication conditions for the plurality of slave wireless devices 17 will be described with reference to FIGS. 2, 3, 4, and 5. FIG. FIG. 3 shows an example of a data format generated by the transmission format generator 9 in FIG. FIG. 4 is a flowchart illustrating a process when the master wireless device 1 sets communication conditions for a plurality of slave wireless devices.
[0015]
In FIG. 4, when the communication condition select switch 5 shown in FIGS. 2 and 5 is set to the position 51 by the user and the load switch 6 is pressed, the reference communication condition of the master wireless device 1 stored in the storage device 3 is stored. The input control unit 7 issues an interrupt request to the CPU 11, and when there is an interrupt request, the CPU 11 transfers each information of the reference communication condition stored in the storage device 3 to the mode control unit 8 in advance, and The control unit 8 sets the reference communication conditions of the master wireless device 1 in a memory provided therein, and also sets a channel, a communication mode, a modulation method, a data rate, and a transmission mode that are predetermined as reference communication conditions for the RF unit 14. Set the power respectively. (Step 111).
[0016]
When the communication condition select switch 5 is set to the position 52, the CPU 11 causes the display 15 to display a communication condition receiving screen as shown in FIG. When the load switch 6 is pressed after receiving the communication condition, the input control unit 7 requests the CPU 11 to perform an interrupt, and the CPU 11 transmits the information on the communication condition received by the touch panel 4 to the mode control unit 8 when there is an interrupt request. The mode control unit 8 sets the communication conditions of the RF unit 14 according to the information. The communication conditions of the master wireless device 1 and the slave wireless devices 171 to 174 can be set by loading default values stored in the storage device when the power is turned on, without receiving instructions from the communication condition select switch 5 and the load switch 6. You may do so. Further, different communication conditions may be set for each of the plurality of slave wireless devices 171 to 174.
[0017]
Next, when the communication condition select switch 5 is set to the position 53 by the user and the load switch 6 is pressed, it is determined that the switching of the communication conditions of the plurality of slave radios 171 to 174 is to be accepted (step 112). The input control unit 7 issues an interrupt request to the CPU 11, and when there is an interrupt request, the CPU 11 transfers the communication condition information stored in the storage device 3 in advance to the switching communication condition storage unit 12.
[0018]
When the communication condition select switch 5 is set to the position 54, the CPU 11 causes the display 15 to display a communication condition receiving screen as shown in FIG. When the load switch 6 is pressed after directly receiving the communication conditions on the touch panel 4, the input control unit 7 issues an interrupt request to the CPU 11, and when there is an interrupt request, the CPU 11 switches the information on the communication conditions received on the touch panel 4. To the communication condition storage unit 12.
[0019]
The switching communication condition storage unit 12 stores the information on the communication requirements transferred in step 112 (step 113).
[0020]
Next, when the communication condition select switch 5 is set to the position 55 by the user and the load switch 6 is pressed, the input control unit 7 issues an interrupt request to the CPU 11. The communication condition information stored in the storage unit 12 is transferred to the transmission format generation unit 9, and the matching condition information is stored in the matching unit 13.
[0021]
The transmission format generation unit 9 generates data of the communication condition information in accordance with the transmission format, and transfers the generated data to the plurality of slave wireless devices 171 to 174 via the RF unit 14 (step 1135). FIG. 3 shows a transmission format of data generated by the transmission format generation unit 9. 3, the generated data includes a synchronization signal 91, a destination address 92, a transmission source address 93, a data section 94, and transmission / reception data 95. The synchronization signal 91 stores a predetermined synchronization signal for synchronization between the master wireless device 1 and the plurality of slave wireless devices 171 to 174. The destination address 92 stores a predetermined address of a destination wireless device with which the wireless device communicates. In the transmission source address 93, the address of its own wireless device is stored. The data type 94 specifies the type of data. The data types include normal data 941, communication condition information 942, communication condition switching reply information 943, and communication condition switching command 944. When the data type 94 is the normal data 941, the normal data 951 can be stored in the area of the data 95. Further, for example, when the position 55 of the communication condition select switch 5 is designated and the load switch 6 is pressed, the communication condition is distributed, and therefore, the address indicating all the slave wireless devices 171 to 174 is stored as the destination address. The source address stores the address of the master wireless device 1, the data type 94 stores communication condition information 942, and the data 95 stores the set communication condition information 952. Similarly, when the position 56 of the communication condition select switch 5 is designated and the load switch 6 is pressed, since the command is a communication condition switching command, the address indicating all the slave wireless devices 171 to 174 is stored as the destination address. The source address stores the address of the master wireless device 1, the data type 94 stores a communication condition switching command 944, and the data 95 becomes a free area.
[0022]
In FIG. 4, the information on the switching communication condition generated by the transmission format generating unit 9 is set to a data rate according to the communication condition set by the RF unit 14, modulated, encrypted according to the communication mode, and set. The signal is transmitted from the antenna 21 with the transmission power set using the band of the channel (step 114).
[0023]
The information on the switching communication condition transmitted from the master wireless device 1 is received by the RF units 14 in the plurality of slave wireless devices 171 to 174 (step 115). Each of the plurality of slave wireless devices 171 to 174 determines whether the transmission signal determination unit 10 stores an address addressed to the own station in the destination address 92 of the received data (step 1155). If it is not addressed to its own station, the received data is discarded. If it is addressed to its own station, the transmission signal determining unit 10 determines the information of the data type 94 and determines whether the data is the communication condition information 942, the communication condition switching command 944 or the normal data 941. In the case of the communication condition information 942, the transmission signal determination unit 10 stores the communication condition information stored in the data 95 in the switching communication condition storage unit 12, and the transmission format generation unit 9 returns the communication condition switching response. Information is generated, and the generated data is returned to the master wireless device 1 (step 116). In this case, as data to be generated, an address indicating the master wireless device 1 is stored in the destination address, an address of each slave wireless device is stored in the transmission source address, and a communication condition switching reply is stored in the data type 94. Information 943 is stored, and information 952 of the stored communication condition is stored in the data 95. In the discrimination by the transmission signal discriminating unit 10, if the information of the data type 94 is normal data 941, normal wireless communication is performed via the RF unit 14 and the data input / output unit 20.
When the master wireless device 1 receives the communication condition switching return information from the slave wireless devices 171 to 174, it determines whether or not the destination address 92 of the data received by the transmission signal determining unit 10 stores the address addressed to the own station. It discards the received data if it is not addressed to its own station. If it is addressed to the own station, the transmission signal determining unit 10 determines the information of the data type 94 and determines whether the information is the return information 943 of the communication condition switching or the normal data 941. If the response information is the communication condition switching reply information 943, the matching unit 13 compares and matches the communication condition stored in the matching unit 13 with the communication condition switching reply information 943, and determines the matching result as to whether or not they match. It is displayed on the display 15 (step 117). The operator determines whether to switch the communication condition or to transmit the communication condition again based on the matching result displayed on the display 15. Thereafter, master wireless device 1 accepts an instruction from the operator (step 118). If it is determined that the communication condition is to be retransmitted, the communication condition select switch 5 is set to the position 57 and if the load switch 6 is pressed, the input control unit 7 issues an interrupt request to the CPU 11, and the CPU 11 The communication condition information stored in the storage unit 12 is transferred to the transmission format generation unit 9, and the matching condition information is stored in the matching unit 13. The transmission format generation unit 9 generates data of the communication condition information in accordance with the transmission format, and retransmits the generated data to the retransmission destination slave wireless device via the RF unit 14 (step 119).
[0024]
If it is determined that the communication condition is to be switched, the communication condition select switch 5 is set to the position 56, and when the load switch 6 is pressed, the input control unit 7 issues an interrupt request to the CPU 11, and the CPU 11 An instruction for switching communication conditions is given to the generation unit 9. The transmission format generation unit 9 generates information of a communication condition switching command, distributes the generated data to the plurality of slave wireless devices 171 to 174 via the RF unit 14, and stores the data in the switching communication condition storage unit 12. The condition information is transferred to the mode control unit 8 (step 120). In this case, in the data generated by the transmission format generation unit 9, addresses indicating all the slave radios 171 to 174 are stored in the destination address, the address of the master radio 1 is stored in the source address, and the data type is stored. In 94, a communication condition switching command 944 is stored, and the data 95 becomes an empty area. The mode control unit 8 switches the communication condition of the RF unit 14 of the master wireless device 1 according to the information of the communication condition (step 121).
[0025]
On the other hand, each of the slave wireless devices 171 to 174 determines whether the transmission signal determination unit 10 stores an address addressed to the own station in the destination address 92 of the received data. The information of the data type 94 is determined. When it is determined that the command is the communication condition switching command 944, the transmission signal determination unit 10 issues an interrupt request to the CPU 11, and the CPU 11 transfers the communication condition information stored in the switching communication condition storage unit 12 to the mode control unit 8. The mode control unit 8 switches the communication condition of the RF unit 14 of the slave wireless device according to the information on the communication condition (step 122).
[0026]
Thereafter, the master wireless device 1 and the slave wireless devices 171 to 174 perform wireless communication according to the switched communication condition. Further, when the wireless communication is interrupted after the switching, the communication condition before the switching may be returned. Further, in the flowchart shown in FIG. 4, an instruction from the user is received. However, the communication condition and its switching timing are stored in the storage device 3 in advance, and an instruction is given to switch the communication condition according to the switching timing. The program may be stored. For example, it may be programmed to switch to different communication conditions every hour.
As described above, according to the present embodiment, the communication conditions of the wireless device can be easily set. In addition, the wireless communication allows the master wireless device to set and switch the communication conditions of the channels, the communication mode, the modulation method, the data rate, and the transmission power of the plurality of slave wireless devices by remote control. For this reason, a human error at the time of communication condition setting and switching can be reduced. In addition, even when the communication condition is changed, a plurality of slave wireless devices other than the master wireless device can be unmanned.
[0027]
It should be noted that the present invention is not limited to the above embodiment, and various modifications are possible within the scope of the gist.
[0028]
For example, in the above embodiment, each wireless device has both master and slave functions, but a wireless device having only the function of the master wireless device and a wireless device having only the function of the slave wireless device are configured. May be. In this case, the master radio only needs to have a function of performing the processing on the left side shown in FIG. Further, the slave wireless device may have a function of performing the processing on the right side shown in FIG. Therefore, the slave wireless device need not include the touch panel 4, the communication condition select switch 5, the load switch 6, the display 15, and the storage device 3 shown in FIG.
[0029]
【The invention's effect】
As described above, according to the present invention, communication conditions can be set for each of a plurality of wireless devices without an operator directly inputting communication conditions for each of the plurality of wireless devices.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a communication network including a master wireless device and a plurality of slave wireless devices according to an embodiment of the present invention.
FIG. 2 is a configuration diagram of a wireless device according to an embodiment of the present invention.
FIG. 3 is an explanatory diagram of an example of a data format applied to a transmission format generation unit 9 according to an embodiment of the present invention.
FIG. 4 is a flowchart of a communication condition changing method according to an embodiment of the present invention.
FIG. 5 is an external view of a master wireless device 1 according to one embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Master radio | wireless device 2 ... Interface part 3 ... Storage device 4 ... Touch panel 5 ... Communication condition select switch 6 ... Load switch 7 ... Input control part 8 ... Mode control part 9 ... Transmission format generation part 10 ... Transmission signal discrimination part 11 ... CPU
12 switching communication condition storage unit 13 matching unit 14 RF unit 15 display 16 master wireless device 17 multiple slave wireless devices 51 reference communication condition setting (storage device)
52 Communication setting (touch panel)
53: Switching communication condition setting (storage device)
54: Communication condition setting for switching (touch panel)
55 communication condition distribution 56 communication condition switching instruction 57 communication condition retransmission 91 synchronization signal 92 destination address 93 transmission source address 94 data type 95 data 941 normal data 942 communication condition information 943 communication condition switching Reply information 944: Communication condition switching command 951: Normal data 952: Information of communication conditions (channel, modulation method, transmission power, data rate, communication mode).

Claims (4)

In a wireless device that performs communication according to a set communication condition among a plurality of types of communication conditions,
Receiving means for receiving the setting of the communication conditions,
Storage means for storing the received communication conditions,
Transmission means for transmitting the communication conditions stored in the storage means to a communication partner,
Receiving means for receiving a reply of the communication condition from the communication partner,
Comparison means for comparing the communication conditions received by the receiving means with the communication conditions stored in the storage means,
When the comparison result of the comparison means indicates that the communication condition received by the reception means matches the communication condition stored in the storage means, the communication means switches to the communication condition and performs communication. transceiver. In a wireless device that performs communication according to a set communication condition among a plurality of types of communication conditions,
Communication condition receiving means for receiving a communication condition transmitted from another wireless device,
Reply means for returning the communication condition received by the communication condition receiving means,
Switching instruction receiving means for receiving a communication instruction switching instruction from the other wireless device,
A wireless device comprising: a switching unit configured to perform communication by switching to the communication condition received by the communication condition receiving unit when the switching instruction receiving unit receives a communication condition switching instruction. In a wireless device that performs communication according to a set communication condition among a plurality of types of communication conditions,
Registration means for registering whether the wireless device is a master wireless device or a slave wireless device,
The registration unit has a master radio unit that operates when the radio device is registered as a master radio device, and the registration unit includes a slave radio unit that operates when the radio device is registered as a slave radio device. ,
The master wireless unit, receiving means for receiving the setting of the communication conditions, storage means for storing the received communication conditions, transmission means for transmitting the communication conditions stored in the storage means to a communication partner, Receiving means for receiving a reply of the communication condition from the communication partner; comparing means for comparing the communication condition received by the receiving means with the communication condition stored in the storage means; Switching means for performing communication by switching to the communication condition when the communication condition received by the receiving means matches the communication condition stored in the storage means,
The slave wireless unit includes a communication condition receiving unit that receives a communication condition transmitted from another wireless device, a return unit that returns a communication condition received by the communication condition receiving device, and a communication from the other wireless device. Switching instruction receiving means for receiving a condition switching instruction, and switching means for performing communication by switching to the communication condition received by the communication condition receiving means when the communication instruction switching instruction is received by the switching instruction receiving means. A wireless device comprising: The wireless device according to claim 1, 2 or 3,
The communication conditions include channel information indicating a frequency band, communication mode information indicating an encryption method, modulation information indicating a modulation method, data rate information indicating a communication speed, and transmission power information indicating a transmission power value. A wireless device characterized in that at least one of them is provided.

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