JPH0432830Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to a multi-band radio, and in particular can receive two or more bands at the same time.The main band for transmitting and receiving and the receiving only side can be controlled by the user's specified operation. This invention relates to a multiband radio device that can be used separately for sub-sides.

[Conventional technology]

Multi-band radios can only transmit on one band, but some can receive on two or more bands at the same time. for example,
In a radio equipped with a first transmitting/receiving section capable of transmitting and receiving a first band of 144 MHz band and a second transmitting/receiving section capable of transmitting and receiving a second band of 430 MHz, a band switching switch provided in the radio If you switch and set one band as main and the second band as sub,
While reception is done simultaneously on both the 1st and 2nd bands, when the microphone's PTT.SW is turned on,
Transmission is done on the main 1st band, and conversely,
When you set the second band to main and the first band to sub using the band switching SW, the microphone
When PTT.SW is turned on, transmission is performed on the second band.

Therefore, when the other party's station with which you wish to communicate primarily makes calls in the second band, the first band is switched to the main band and the second band to the sub band using the band switching switch, and the sub side receives signals from the desired station. While waiting, the main side listens to communications between other stations on various frequencies and makes calls to other parties, and when the desired station comes into the sub side, the band switching switch is activated. By operating the , you can switch the second band to main and the first band to sub, turn on the PTT SW, and answer the caller on the second band.

[Problem that the invention attempts to solve]

However, in the conventional technology described above, when the other party's station is caught on the sub side, communication with the desired party cannot be performed unless the band switching switch is operated to switch between the main and sub stations one by one, making the operation cumbersome. It had its drawbacks.

In view of the problems of the prior art, this invention provides an easy-to-operate multi-band radio that allows communication with the other party without operating the band switching switch when the other station makes a call on the sub side. That is its purpose.

[Means for solving problems]

This invention consists of two transmitting/receiving sections, each of which includes a detection circuit and transmitting/receiving in different bands, and a band for specifying the main band for transmitting and receiving and the sub-band for only receiving. Based on the specifications of the designation section, the transmission command generation section that issues transmission commands, and the band specification section, the two transmission and reception sections are divided into the main side and the sub side and are controlled for transmission and reception, and when no transmission command is issued, both transmission and reception are performed. A mode for setting an automatic band switching mode in a multi-band radio that has a control section that causes the main transmitting and receiving section to perform only the receiving operation, and when a transmitting command is issued, the transmitting and receiving section on the main side performs the transmitting operation. The control section includes a setting section, and when the automatic band switching mode is set in the mode setting section, when the sub-side touch detection circuit does not detect touch, the control section switches between the main side and the sub side. The system is characterized in that transmission and reception control is performed while the corresponding state is continued, and when the sub-side sensation detection circuit detects a sensation, the main and sub are switched and transmission and reception control is performed.

"Embodiment" One embodiment of this invention will be described with reference to FIG.

Transmitting/receiving antennas 14 and 16 are connected to a first transmitting/receiving unit 10 capable of transmitting and receiving in the 144 MHz band (first band) and a second transmitting/receiving unit 12 capable of transmitting and receiving in the 430 MHz band (second band), respectively. There is. These first transmitter/receiver unit 10 and the second transmitter/receiver unit 10
The output side of a microphone 18 is connected to the transmitter/receiver unit 12, and when transmitting, the microphone input is transmitted at a frequency specified by the user. This transmission is performed by only one of the first transmitting/receiving unit 10 and the second transmitting/receiving unit 12.

Moreover, these first transmitting/receiving units 10 and the second transmitting/receiving unit 10
A speaker 19 is connected to the transmitter/receiver unit 12, and during reception, it reproduces and outputs received sound at a frequency designated by the user. This receiving operation is performed simultaneously by both the first transmitting/receiving unit 10 and the second transmitting/receiving unit 12.

The first transmitting/receiving unit 10 and the second transmitting/receiving unit 12 each have a squelch circuit (not shown), and during reception operation, a speaker output is made only when the squelch circuit detects an incoming sensation. These squelch circuits output to the outside a sensation detection signal which is "1" when a sensation is detected and "0" when there is no sensation.

The first transmitting/receiving unit 10 and the second transmitting/receiving unit 12 are connected to a microcomputer 20, and the microcomputer 20 controls transmission and reception. The microcomputer 20 includes an operation section 22, a display section 24, and a PTT.SW 2 of a microphone 18.
6 is connected.

The operation unit 22 includes various key switches for setting the frequencies of the first and second bands, specifying the main band for transmitting and receiving and the sub-band for only receiving, setting the automatic band switching mode, etc. It is provided.

In addition, the display section 24 is divided into main side and sub side.
In addition to displaying the operating frequency and a busy display when there is a disturbance, it also displays whether the automatic band switching mode is on or off.

The microcomputer 20 is configured to receive an intrusion detection signal from each squelch circuit of the first transmitting/receiving unit 10 and the second transmitting/receiving unit 12.

The microcomputer 20 includes a CPU, ROM,
The RAM is connected to a bus, and based on a predetermined program stored in the ROM, the operation of the operating section 22, the operation of the PTT.SW 26, and the operation of the first transmitting/receiving unit 1
0 and the second transmitting/receiving unit 12, operational frequency control, transmission/reception switching control, display control, main/sub band switching control, etc. are executed.

The RAM includes an area for managing operating frequencies of the first and second bands, an area for managing display information, an area for managing band switching status, a soft timer area, and the like. Here, the band switching state is the first when A=0.
The band is the main band and the second band is the sub band, and conversely, when A=1, the second band is the main band and the first band is the sub band.

Next, the operation of the above embodiment will be explained with reference to the flowchart of FIG. FIG. 2 shows main and sub band switching processing among various processing operations of the microcomputer 20. Other frequency variable control, display control, etc. are executed by multitasking processing.

After turning on the power of the set, initially, the first transmitting/receiving unit 10 is on the main band side, and the second transmitting/receiving unit 1 is on the main band side.
2 is initialized on the subband side (corresponding to A=0).

When the user performs an operation to change the operating frequencies of the first band and the second band using the operation unit 22, the microcomputer 20 outputs a frequency control signal to the first transmitting/receiving unit 10 and the second transmitting/receiving unit 12, respectively. Operating frequency F ₁ and according to user operation
F ₂ , and the main side is F ₁ on the display section 24,
The sub side displays _F2 .

If the user wants to start transmitting in the second band 430MHz band, switch the band on the operation unit 22.
Operate the SW to manually switch bands.

The microcomputer 20 checks whether there is a band switching operation in step 40, and when the user operates the band switching SW, the microcomputer 20 determines YES in step 40. Check A in the RAM band switching state management area, and in this case, A = 0, so A
to 1 to switch the main band to the second band and the sub band to the first band, and display section 2.
4 is switched so that the main side is F ₂ and the sub side is F ₁ (step 42).

As a result, transmission is performed at _F2 of the second band.

That is, when the user turns on the PTT.SW 26 of the microphone 18 and makes a call, the microcomputer 20 is the main side of the second transmitting/receiving unit 12.
The second transmitter/receiver unit 12 modulates the input of the microphone 18 into a transmit signal, which is then emitted from the antenna 16 as a radio wave of frequency F ₂ .

After that, after the user turns off the PTT.SW 26, if the other party's station that heard the user's call responds with _F2 of the second band, the squelch circuit of the second transmitter/receiver unit 12 opens and the other party's voice is heard through the speaker. At this time, the input detection signal "1" is output from the squelch circuit of the second transmitting/receiving unit 12.
The microcomputer 20 that inputs this causes the display unit 24 to display a busy display on the main side, so the user confirms that the busy display is on the main side and responds by turning on the PTT.SW 26 of the microphone 18. , the microcomputer 20 again outputs a transmission control signal to the second transmitting/receiving unit 12 side, which is the main side, and the input of the microphone 18 is modulated into a transmitting signal by the second transmitting/receiving unit 12, and the transmitting/receiving antenna 1
Let it fire from 6. This allows communication with the other station.

If the other party makes a call using _F1 of the first band, the squelch circuit of the first transmitting/receiving unit 10 opens and the other party's voice is output from the speaker 19. The microcomputer 20 inputting the detection signal "1" from the squelch circuit causes the display unit 24 to display a busy display on the sub side. When a user hears a call and wishes to communicate, they first check whether the busy display is on the main or sub side, and in this case it is on the sub side, so they manually switch between main and sub by operating the band switching switch. After that (steps 40 and 44), when the PTT.SW 26 of the microphone 18 is turned on and a response is made, the microcomputer 20 outputs a transmission control signal to the first transmitting/receiving unit 10 side, which is the main side, and the input of the microphone 18 becomes the first transmitting/receiving unit. The unit 10 modulates the signal into a transmission signal, and the signal is emitted from the transmitting/receiving antenna 14, thereby enabling communication.

Unlike this, there is a high possibility that the user's desired partner station will make a call on the second band, so the user waits for reception from this desired station on the second band until the desired station makes a call. When trying to listen to communications between other stations on the 1st band, if the 1st band was previously set to sub and the 2nd band was set to main, operate the band switch SW to listen to communications between other stations. The main band is switched and the second band is switched to the sub band (steps 40 and 44).

Then, when the frequency on the second band side is changed to match the transmission frequency of the station with which communication is desired, the microcomputer 20 registers it in the RAM as the operating frequency F ₂ ' of the second band, and at this frequency F ₂ '. Performs reception control of the second transmitting/receiving unit 12.

Next, by turning on the automatic band switching mode setting key, when the other station calls on the subband, communication can be performed on the second band without operating the band switching switch.

That is, following steps 40, 42, and 44, the microcomputer 20 checks whether or not the automatic band switching mode setting key has been operated in step 46. When the user turns on the key, the microcomputer 20 determines YES and automatically switches on the automatic band switching mode setting key. The band switching mode is set and the mode is displayed on the display section 24 (step 48).

Next, the microcomputer 20 refers to A and determines whether or not there is a sensation on the subband side. Specifically, when A=0, the touch detection signal input from the second transmitting/receiving unit 12 is checked, and when A=1, the touch detection signal input from the first transmitting/receiving unit 10 is checked. In this case, A=0 etc. and the second
The input of the touch detection signal from the transmitter/receiver unit 12 is checked (step 50). Here, if there is no sensation on the sub side, the process returns to step 50 and waits until there is sensation on the sub side.

Here, when the user performs an operation to change the frequency of the first band in order to listen to communications from other stations on the first band, the microcomputer 20 changes the operating frequency F ₁ of the first band in parallel with the processing in step 50. ', and performs reception control processing on the first transmitting/receiving unit 10 at this frequency F ₁ '.

Then, when there is a station communicating at frequency F ₁ ' in the first band, the first transmitting/receiving unit 1
Since the squelch of 0 is opened and audio is output from the speaker 19, the user can enjoy listening to communications from other stations.

Furthermore, when the user turns on the PTT.SW 26 of the microphone 18 to emit radio waves in the first band, the microcomputer 20 activates the first transmitting/receiving unit 1.
0 to output the transmission control signal to the frequency of the first band.
A radio wave of F ₁ ' is emitted from the antenna 14.

While the microcomputer 20 is repeating the process of step 50 in this way, when the user's desired destination station transmits at the frequency F ₂ ' of the second band, the squelch circuit of the second transmitting/receiving unit 12 detects an incoming signal. It is detected and outputs an intrusion detection signal "1". Then, the microcomputer 20 determines YES in step 50, and at this time refers to A and performs band switching (step 56).

That is, in this case, since A=0, A is set to 1.
The main band is switched to the second band, the subband is switched to the first band, and the frequency display on the display section 24 is switched to F ₂ ' on the main side and F ₁ ' on the sub side.

This allows transmission to be performed at F ₂ ' in the second band.

Incidentally, when the squelch circuit of the second transmitting/receiving unit 12 detects the incoming sound, the squelch is opened and the voice of the other station is outputted from the speaker. Furthermore, since A=1, the microcomputer 20 displays a busy display on the main side (F ₂ ' side) based on the input of the touch detection signal "1" from the second transmitting/receiving unit 12.

Following step 56, the microcomputer 2
0 refers to A, checks the sensation detection signal from the main side (second band side) after band switching, and determines whether sensation still continues (step 58). If it is still continuing, set the timer (step 60), and after confirming that the time has not exceeded (step 6).
2) It is determined whether the PTT.SW 26 has been turned on by the user (step 64).

If the PTT.SW 26 is not turned on, the process returns to step 58 and repeats the process described above.
Even if PTT.SW26 is not turned on by the user,
As long as the input from the second transmitting/receiving unit 12 continues, resetting of the timer is repeated, so the determination at step 62 becomes NO, and the process returns to step 58 via step 64.

After that, the user who heard the speaker output determines that it is the desired partner station, and after confirming that the busy display is displayed on the main side (F ₂ ' side), the PTT.SW2
6 is turned on, the microcomputer 20 determines YES in step 64, proceeds to step 54, cancels the automatic band switching mode, turns off the mode display, and ends the flow.

Therefore, even if there is a sensation on the sub side thereafter, automatic band switching will not be performed.

When the PTT.SW 26 is turned on, the microcomputer 20 outputs a transmission control signal to the second transmitting/receiving unit 12 side since A=1, and changes the input of the microphone 19 to the frequency F ₂ ' of the second band. It will be emitted on radio waves.

This allows communication with the desired station.

Note that once the transmission from the other station stops after the automatic band switching in step 56, the microcomputer 20 makes a negative determination in step 58, and then moves on to determining whether the timer has expired without resetting the timer. (Step 62).

In this step 62, it is determined whether or not a preset time period of, for example, 3 seconds has elapsed.After the timer is set, the user who has determined that the desired partner station is connected to the PTT.SW 26 within 3 seconds. If you turn on, you can communicate in the second band. Furthermore, even if the calling station stops transmitting once after automatic band switching in step 56, if the calling station makes a call again in the second band within 3 seconds, the determination in step 58 will be YES. Since the timer is set, the microcomputer 20 then repeats steps 58, 60, and 6 as long as the sensation continues.
After repeating the processes in steps 2 and 64, if the user who has determined that the station is the desired station turns on the PTT.SW 26, communication in the second band can be performed.

In contrast, when the user hears the speaker output after automatic band switching in step 56 and determines that the station is not the desired station and leaves the PTT.SW 26 off, the other station that made the call on the second band does not make the call. After stopping and waiting for a transmission from the person wishing to communicate, the touch detection signal from the second transmitting/receiving unit 12 becomes "0", and the microcomputer 20
The determination at step 58 is NO, and the timer is not set.

Then, if 3 seconds pass without any contact on the main side (normally, when waiting for a call from a person who wants to communicate,
(Do not re-transmit for more than seconds), microcomputer 2
0, it is judged as YES in step 62, and in this case,
Perform automatic band switching again (step 6)
6).

In other words, since A=1 in this case, we set A to 0.
The main band is changed to the first band and the sub band is changed to the second band, and the display on the display section 24 is changed to F ₁ ' for the main side and F ₂ ' for the sub side, and the process returns to step 50.

As a result, the user can once again set the second band, which is likely to be transmitted by the desired partner station, as a sub band and wait for reception. When the other party makes a call to the sub side, simply turn on the PTT.SW26. And the second
You can communicate using the band.

Of course, until the other station makes a call to the sub side,
As mentioned above, it is possible to listen to communications of other stations at various frequencies in the first band.

According to this embodiment, when the automatic band switching mode setting key is turned on, the microcomputer 2
0 sets the automatic band switching mode, and when the sub side is not sensitive, when the PTT.SW26 is turned on, a transmission control signal is output to the main side transmitting/receiving unit to transmit, and vice versa. When the sub side detects a signal, the main and sub bands are automatically switched, and when the PTT.SW26 is turned on, a transmission control signal is output to the original sub side transmitting/receiving unit to communicate with the other station. By transmitting in the same band, if the partner station with which you wish to communicate transmits in a subband, you can communicate with the partner station without performing a manual band switching operation.

[Effect of idea]

According to the multiband radio device according to this invention,
A mode setting unit is provided to set an automatic band switching mode, and when the automatic band switching mode is set in this mode setting unit, the control unit
When the input detection circuit on the sub side does not detect an input sensation, the transmission and reception control is performed by continuing the previous state of the main side and the sub side, and when the input detection circuit on the sub side detects an input sensation. Since the main and sub channels are exchanged to control transmission and reception, when the partner station with which you wish to communicate makes a call on the sub band, there is no need to manually switch the band.
It has the excellent effect of being able to communicate with the other station and simplifying operations.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a multiband radio device according to an embodiment of this invention, and FIG. 2 is a flowchart illustrating the operation of the microcomputer shown in FIG. DESCRIPTION OF SYMBOLS 10...First transmitting/receiving unit, 12...Second transmitting/receiving unit, 18...Microphone, 20...Microcomputer, 22...Operation unit, 26...
PTT.SW.

Claims (1)

[Claims for Utility Model Registration] Two transmitting/receiving units each including a sensation detection circuit and transmitting and receiving in different bands, and for these transmitting/receiving units, a main band side for transmitting and receiving and a sub-band side for only receiving. a band specification section for specifying;
Based on the specifications of the transmission command generation section that issues transmission commands and the band specification section, transmission and reception control is performed by dividing the two transmission and reception sections into the main side and the sub side, and when no transmission command is issued, both transmission and reception sections perform reception operation. a mode setting section for setting an automatic band switching mode in a multi-band radio device having a control section for causing a transmitting/receiving section on the main side to perform a transmitting operation when a transmission command is issued; When the automatic band switching mode is set in the mode setting section, the control section continues the state of the main side and the sub side if the sub-side touch detection circuit does not detect touch. 1. A multi-band radio device characterized by performing transmission and reception control on the sub side, and when an input detection circuit on the sub side detects an input, transmitting and receiving control is performed by switching the main side and the sub side.