JP2876178B2 - Wireless communication device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio communication device, and more particularly to a radio communication device having a voice communication channel and a data transmission channel.

[0002]

2. Description of the Related Art FIG. 5 is a block diagram schematically showing a conventional radio communication device 50. The wireless communication device 50 includes a wireless communication device main body 51, a push button type channel changeover switch 52, a microphone 53, an external operation terminal 54, and the like. The wireless communication device main body 51 includes a CPU 61, E
It is configured to include an EPROM 62, a radio circuit 64, and the like.
The PU 61 is connected to the radio circuit 64. The external operation terminal 54 is connected to the CPU 61 via a serial signal line 63 and has a CP via a channel switching line 54a.
It is connected to the channel switching signal input terminal T _CH of U 61. The terminal 52b of the channel changeover switch 52 is connected to the channel changeover signal input terminal _TCH , and the other terminal 52a of the channel changeover switch 52 is grounded. The microphone 53 is a wireless circuit 64
, And the wireless circuit 64 is connected to the antenna 55.

In the wireless communication apparatus 50 configured as described above, channel switching is performed as follows. In the wireless communication device 50, channel setting data for voice communication and data transmission is stored in the EEPROM 62, and the channel is switched in the wireless circuit 64 in accordance with the channel setting data stored in the EEPROM 62.

[0006] Channel switching in the radio circuit 64 can be performed from the channel switch 52 or from the external operation terminal 54. (1) The radio circuit 6 is controlled by the channel switch 52.
If 4 of the channel is switched When the user operates the switch 52 switching channels (Press to), the channel switching signal is input to the channel switching signal input terminal T _CH of CPU 61. And
When the CPU 61 receives the channel switching signal,
The channel setting data stored at the address indicated by the switching signal is called from the EPROM 62, and the channel of the wireless circuit 64 is switched to the channel indicated by the setting data.

[0005] (2) The radio circuit 6 by the external operation terminal 54
For channel switching is performed in the four-channel switching signal through the channel switching line 54a from the external operation terminal 54 are input to the channel switching signal input terminal T _CH of CPU 61. Then, as in the case of (1), the channel setting data stored at the address indicated by the switching signal is called from the EEPROM 62 by the CPU 61, and the channel of the wireless circuit 64 is the channel indicated by the information, in this case, data transmission. Is switched to the channel for

[0006]

As shown in (1) and (2) above, in the wireless communication device 50, the channel of the wireless circuit 64 is switched in parallel from the channel switch 52 or from the external operation terminal 54. You can do it. That is, the external operation terminal 5
4 and the channel changeover switch 52 that can be operated by the user, the channel of the wireless circuit 64 including the channel for data transmission as well as the channel for voice communication is stored in the EEPROM 62. It is possible to switch to the channel. Hereinafter, the channel switch 5
The case where the channel of the wireless circuit 64 is switched according to 2 will be briefly described.

For example, as shown in FIG.
It is assumed that N channels 62 to ch1 to chN are prepared as channels that can be used by the wireless communication device 50 at 62. First, the channel of the wireless circuit 64 is ch1
When the channel indicated by the setting data is set, the channel number (address) called from the EEPROM 62 is sequentially shifted every time the channel changeover switch 52 is operated, and the channel of the wireless circuit 64 is set to c.
h1 → ch2 → ch3 → ‥‥ → Channel is sequentially switched to the channel indicated by the setting data of chN. After the transition reaches chN, when it is confirmed that the channel information is not stored at the next address of chN, the process returns to ch1 again. In other words, by operating the channel changeover switch 52, the user can select ch1 to ch.
N is circulated to change the channel of the radio circuit 64 to ch1 to c.
It is possible to switch to an arbitrary channel indicated by the setting data of hN.

However, in that case, the following problem occurs. Assuming that ch1 to ch (N-1) are areas storing channel setting data for voice communication and chN is an area storing channel setting data for data transmission, the external operation terminal 54 , The channel of the wireless circuit 64 is switched via the CPU 61 to the channel indicated by the setting data of chN. However, as described above, the user can switch the channel of the wireless circuit 64 to an arbitrary channel indicated by the setting data of ch1 to chN by the channel switch 52, so that the data is transmitted from the external operation terminal 54. During transmission, the user may erroneously operate the channel changeover switch 52 and shift to a data transmission channel in an attempt to make a voice call. Then, the data transmitted from the external operation terminal 54 is broken on the way. In particular, when N = 2, the erroneous operation increases.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has a channel switching means capable of reliably executing data transmission without breaking data transmitted from an external operation terminal on the way. It is intended to provide a wireless communication device.

[0010]

According to the present invention, there is provided a radio communication apparatus comprising a voice communication channel and a data transmission channel, a channel switch, an external operation terminal, a CPU, and the like. In the device, the external operation terminal is connected to the CPU via a serial signal line, and a memory provided with an area for storing channel setting data is connected to the CPU. A blank area where no data is set is formed between the address where the data related to the setting of the communication channel is stored and the address where the data related to the setting of the data transmission channel is stored, and switching is performed by the channel switch. Can be limited to only the voice call channel, Is characterized in that the channel can be switched by the operation terminal and a channel switching means of any channel stored in the memory.

[0011]

In the case of the radio communication apparatus according to the above configuration, channel switching by the channel switch is performed as follows. When the channel switch is operated, the address (= channel number) at which data relating to the channel setting is stored is increased. Then, it is determined whether or not the data related to the channel setting is stored in the address that has been raised.
When data relating to the channel setting is stored in the above-mentioned address, when the channel switch is operated, the address is increased to the next channel number. On the other hand, if the data on the channel setting is not stored in the up address, that is, if the up address is a blank area, the address will not be changed even if the channel switch is operated. The address is not raised and the address returns to the address of channel number 1.

The blank area is formed between the address where the data relating to the setting of the voice communication channel is stored and the address where the data relating to the setting of the data transmission channel is stored, as described above. ing. Therefore, in the case of the wireless communication device according to the above configuration, for example, channel number 1 and channel number 2
If a channel for voice communication is stored in the channel No. 3 and a data transmission frequency is stored in the channel No. 4 as a blank area, the channels that can be switched by the channel switch are channel numbers 1 and 2. It is limited to voice communication channels only.

On the other hand, the address at which the setting data of the data transmission channel is stored can be directly specified from the external operation terminal via the serial signal line. Explaining using the above example, when data is transmitted from the external operation terminal, the channel switching signal is transmitted from the external operation terminal via the serial signal line to the C terminal.
The data is input to the PU, and the channel number 4 in the EEPROM is directly specified. Thereby, the channel number 4
The channel of the wireless circuit is switched to the channel for data transmission according to the setting data stored in, and data transmission is executed.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a radio communication apparatus according to the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram schematically illustrating a wireless communication device 10 according to the embodiment. Components having the same functions as those of the conventional example are denoted by the same reference numerals.

The difference between the wireless communication device 10 and the conventional wireless communication device 50 shown in FIG. 5 is that the wireless communication device body 51 is the wireless communication device body 11 and the CPU 61 is the CP.
U21, and the next EEPROM62 is EEPROM 22, in that a channel switching signal line 54a has been connected from the external operating terminal 54 to the channel switching signal input terminal T _CH of CPU61 is removed in the wireless communication device 10. Other configurations are the same.

The operation of the wireless communication apparatus 10 configured as described above will be described with reference to FIGS. Figure 2 shows the EEPR
FIG. 9 is a diagram illustrating a storage area of setting data of a voice communication channel and a data transmission channel in the OM 22 in the case of three channels. In the wireless communication device 10, the voice communication frequency is stored in the channel number 1 (address A), the data transmission frequency is stored in the channel number 3 (address A + 2), and the frequency is not stored in the channel number 2 (address A + 1). Blank area.

Next, the operation of the radio communication apparatus 10 when a channel is switched by the channel switch 52 will be described with reference to FIGS. FIG. 3 shows the wireless communication device 10
9 is a flowchart showing the operation of the CPU 21 when switching the channel of FIG.

[0018] First, in step 1, whether the channel selector switch 52 is turned-on by the channel switching signal is input to the channel switching signal input terminal T _CH is determined. If it is input to the channel switching signal channel switching signal input terminal T _CH, the process proceeds to Step 2, the channel address chADDR is +1.
Next, in step 3, the contents of the channel address incremented by 1 in step 2 are read from the EEPROM 22, and it is determined whether or not frequency data is set in the channel address (step 4). If frequency data is set in the channel address, the channel of the wireless communication device 10 is set to the channel indicated by the frequency data. On the other hand, if the frequency data is not set in the area where the channel address is blank, the process proceeds to step 5 and the channel address ch is set.
ADDR is set to the start address A. Then, in step 6, the contents of the channel address A are read, and the channel of the wireless communication device 10 is set to the channel number 1
Is switched to the voice call channel.

The details of the flow chart described above with reference to FIG. 2 are as follows. When the channel switch 52 is turned on in step 1, the channel address chADDR is incremented by 1 in step 2. At this time, the channel set before the channel switch 52 was turned on is the channel number 1
, The channel address set in step 2 is the channel address of channel number 2 (A + 2). Therefore, it is the content of the channel number 2 that is read from the EEPROM 22 in step 3 and determines whether or not the frequency data is set in step 4. However, FIG.
The channel number 2 is a blank area as shown in FIG. Therefore, it is determined NO in step 4. Then, in step 5, the channel address chADDR is set to the address A of the channel number 1, and in step 6, E is set to E.
The contents of the address A, that is, the contents of the channel number 1 are read from the EPROM 22.

As described above, in the radio communication apparatus 10, the channels that can be switched by the channel switch 52 are set to the respective channel numbers from the head address to an address that is a blank area where no frequency data is stored. Channels for voice calls,
In FIG. 2, channel number 1 and channel number 2
Can be limited to Therefore, if the wireless communication device 10 is used, while the data is being transmitted from the external operation terminal 54, the user operates the channel changeover switch 52 to shift to the data transmission channel. Data can be prevented from being broken, and data transmission can be reliably performed.

Next, the operation of the wireless communication apparatus 10 when the channel is switched by the external operation terminal 54 will be described with reference to FIG. FIG. 4 shows the external operation terminal 5
4 is a flowchart showing an operation of the CPU 21 when a channel is switched by the CPU 4.

In step 1, it is determined whether command data has been received from the external operation terminal 54 via the serial signal line 63. When the command data is received, the process proceeds to step 2, and it is determined whether the command data includes a channel switching request. If the request is not included, the process returns to step 1. If the request is included, in step 3, the address specified by the command data is set to the channel address chADDR. Next, the contents of the channel address set in step 3 are read from the EEPROM 22 (step 4), and it is determined whether frequency data is stored (step 5). If frequency data is stored in the channel address read in step 4, the frequency data is set as a data transmission channel of the wireless communication device 10. On the other hand, if frequency data is not stored in the channel address, steps 6 and 7 are executed.

Normally, when a channel is switched by the external operation terminal 54, the channel address set before the switching process is executed is temporarily saved to a temporary address chATP. In step 6, the channel address chADDR is set to the temporary address chATP, that is, the address (the address where the data of the voice communication channel is stored) that was set before the channel switching process was executed.
Then, in step 7, the program proceeds from the EEPROM 22 to step 6.
Is read, and the channel of the wireless communication device 10 is set (returned) to the voice communication channel.

As described above, in the wireless communication apparatus 10 according to the embodiment, as shown in step 3, the address at which the frequency data relating to the data transmission channel is stored can be directly designated from the external operation terminal 54. . Thus, when the number of channels is three or more, the channel of the wireless communication device 10 can be always switched from the voice communication channel to the data transmission channel from the external operation terminal 54 for a fixed period of time regardless of whether the number of channels is large or small. .

[0025]

As described above in detail, in the radio communication apparatus according to the present invention, the channels which can be switched by the channel switch which can be operated by the user are limited to only the voice communication channels.
While data is being transmitted from the external operation terminal, the user does not erroneously operate the channel changeover switch to shift to the data transmission channel and break the data being transmitted, thereby ensuring data transmission. Can be executed.

[Brief description of the drawings]

FIG. 1 is a schematic block diagram showing an embodiment of a wireless communication device according to the present invention.

FIG. 2 is an example showing a storage format of channel data stored in an EEPROM.

FIG. 3 is a flowchart illustrating an operation of a CPU when a channel is switched by a channel switch.

FIG. 4 is a flowchart showing an operation of a CPU when a channel is switched by an external operation terminal.

FIG. 5 is a block diagram schematically showing a conventional wireless communication device.

FIG. 6 is an example showing a storage format of channel data stored in an EEPROM in a conventional wireless communication device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Wireless communication apparatus 11 Wireless communication apparatus main body 21 CPU 22 EEPROM 52 Channel switch 54 External operation terminal 63 Serial signal line 64 Wireless circuit

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H04B 1/38-1/58 H04B 7/24-7/26 H04M 11/00 303 H04Q 7/00-7 / 38

Claims (1)

(57) [Claims] 1. A wireless communication device including a voice communication channel and a data transmission channel, a channel changeover switch, an external operation terminal, a CPU, and the like, wherein the external operation terminal is connected to the CPU via a serial signal line; The CPU is connected to a memory provided with an area for storing channel setting data. The memory has an address at which data relating to the setting of the voice communication channel and an address relating to the setting of the data transmission channel. A blank area where no data is set is formed between the address where the data is stored and the channel which can be switched by the channel switch is limited to only the voice call channel and is switched by the external operation terminal. Channels that can be stored in the memory Wireless communication device comprising channel switching means for setting an arbitrary channel.