JPH0611672Y2 - Wireless device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Use The present invention relates to a wireless device capable of simultaneously receiving two waves, and a wireless device provided with a mute circuit capable of operating independently in two receiving sections. Regarding the device.

(B) Problems to be Solved by Conventional Techniques and Inventions Conventionally, as a wireless device capable of receiving two waves at the same time, a wireless device provided with a mute circuit capable of operating independently of two receivers has been used. Was offered.

However, in the above-mentioned conventional one, since the two receiving units operate independently, for example, one receiving unit is in the mute state and the other receiving unit is not in the mute state (hereinafter, In the case of the non-mute state), there is a disadvantage that the switches or keys of both receivers must be operated when reversing the above state.

The present invention has been made in view of the above points, and an object of the present invention is to solve the conventional drawbacks and provide a wireless device having good operability.

(C) Means for Solving the Problem FIG. 1 is a block diagram showing the configuration of the present invention.

The wireless device of the present invention is provided with a mute circuit capable of operating independently in each of the two receiving units, and each mute circuit is provided with a mute key for setting the mute state and the non-mute state. In the provided wireless device, when the mute circuit of the first receiving section is in the mute state, first setting means for setting the mute circuit of the second receiving section to the non-mute state, and the second receiving section. And a second setting means for setting the mute circuit of the first receiving section to the non-mute state when the mute circuit of the first receiving section is in the mute state In the mute state, the mute state of the other receiving section is released. Further, a key state identifying means for identifying that the mute key of the first receiving section and the mute key of the second receiving section are simultaneously pressed is provided, and the mute key of the first receiving section and the second receiving section are provided. When it is recognized that the mute key and the mute key of the unit are simultaneously pressed, the two receiving units are configured to be in the mute state.

(D) Operation The operation of this invention will be described with reference to FIG.

According to the present invention, when the mute circuit of the first receiving section is in the mute state, the first setting means for setting the mute circuit of the second receiving section to the non-mute state, and the second receiving section. When the mute circuit of 1 is in the mute state, the second setting means for setting the mute circuit of the first receiving section to the non-mute state is provided, so that the mute key of one receiving section is pressed. When the unit is in the mute state, the mute state of the other receiving unit is released. Further, since the key state identification means for identifying that the mute key of the first receiving section and the mute key of the second receiving section are simultaneously pressed, the mute key of the first receiving section and the second mute key are provided. When it is identified that the mute key of the receiving section of the above and the receiving section are simultaneously pressed, the two receiving sections are in the mute state.

(E) Embodiment An embodiment of the wireless device according to the present invention will be described with reference to FIGS. 1 to 3.

FIG. 2 is a block diagram of this wireless device.

In the figure, 1 is a first receiving unit, 2 is a second receiving unit, and 3 is a first receiving unit.
PLL circuit for adding a required signal to the mixers and detectors of the receiving section 1 and the second receiving section 2 of the first receiving section 1
And the mute circuit of the second receiver 2 and the PL
A ROM for controlling and storing the L circuit 3, a RAM for storing data such as a calculation result of the microcomputer 4, A for a mute key mainly used for the first receiver 1, and B for a second receiver. The mute key A used for 2 is an LED for displaying the state of the mute circuit of the first receiving unit 1, and 10 is an LED for displaying the state of the mute circuit of the second receiving unit 2. , B
The LEDs 9 and 10 are connected to the microcomputer 4 via the input / output ports.

Further, 1a is an antenna of the first receiving unit 1, 1b is a high frequency amplifier circuit of the first receiving unit 1, 1c is a mixer of the first receiving unit 1,
1d is an intermediate frequency amplifier circuit of the first receiving unit 1, 1e is a detector of the first receiving unit 1, 1f is a mute circuit of the first receiving unit 1,
1g is a low-frequency amplifier circuit of the first receiver 1, 1h is a speaker of the first receiver 1, 2a is an antenna of the second receiver 2, 2b is a high-frequency amplifier circuit of the second receiver 2, 2c Is the second receiver 2
Mixer, 2d is an intermediate frequency amplifier circuit of the second receiver 2, 2e
Is a detector of the second receiving unit 2, 2f is a mute circuit of the second receiving unit 2, 2g is a low-frequency amplifier circuit of the second receiving unit 2, and 2h is a speaker of the second receiving unit 2.

Then, in the first receiving unit 1, the radio wave received by the antenna 1a is amplified by the high frequency amplifying circuit 1b, and the output signal of the high frequency amplifying circuit 1b is mixed with the local oscillation frequency of the PLL circuit 3 by the mixer 1c to obtain the intermediate frequency. After being converted to, the signal is amplified by the intermediate frequency amplifier circuit 1d and further detected by the wave detector 1e to extract a low frequency signal. This low-frequency signal is amplified by the low-frequency amplifier circuit 1g via the mute circuit 1f, and the speaker 1h
Be led to.

The antenna 2a is also used for the second receiving unit 2 in the same manner as above.
The signal received at is guided to the speaker 2h.

Next, the operation of the wireless device configured as described above will be described in two cases (a) and (b) based on the flowcharts of FIGS.

In this program, the muteA key flag, the muteA flag, the metB key flag, the mut
If the mute key A is pressed with the eB flag provided, the muteA key flag becomes 1, and if the muteA flag is set to 1, the mute circuit 1f of the first receiving unit 1 enters the mute state.

If the mute key B is pressed, the muteB key flag is set to 1, and if the muteB flag is set to 1, the second
The mute circuit 2f of the receiving unit 2 is put in a mute state.

(A) When the first receiving unit 1 is in the mute state, the second receiving unit 2 is in the mute state, and the two receiving units are then released from the mute state, the muteA key flag, the muteA flag, and the mu
It is assumed that the teB key flag and the muteB flag are both 0.

When the mute key A is pressed in this state, the muteA key flag is set to 1 based on steps S0 and S1 (step S
2). Since the muteA flag is currently 0 and is not in the mute state, the muteB flag is set to 0 based on step S3 to set the mute circuit 2f of the second receiving section 2 to the non-mute state (step S4), and the muteA flag is set to 1 Then, the mute circuit 1f of the first receiving section 1 is put into a mute state (step S5).

Next, since the mute key B is not pressed, step
In S7, the route R2 is selected and step S13 is executed. Mute key A when step S13 is executed
Is pressed, route R3 is selected and step S1
5 is executed. Since the mute key B has not been pressed (step S15), the muteB key flag becomes 0 (step S16).

The current flag states are muteA key flag and mute
Since both the A flags are 1 and the mute key B is not pressed, steps S16, S17, S18,
Step S19 and step S20 are executed in order, and step S2
Move on to step 3. In step S23, since the muteB key flag is 0, the route R6 is selected and the step
Repeat execution from S0.

In this way, when the mute key A is pressed, the first receiving section 1 is in the mute state and the second receiving section 2 is in the non-mute state.

If you press MUTE key B in this state, step
In S1, the route R1 is selected and step S7 is executed.

Mute key B is pressed (step S7), m
The uteB key flag is set to 1 (step S8). Also,
Since the muteB flag is 0, the muteA flag is set to 0 based on the determination in step S9 (step S10), and the muteB flag is set to 1 to put the mute circuit 2f of the second receiving section 2 in the mute state (step S11). .

Mute key A is not pressed, so steps S14 and S15
Are executed in order. Since the mute key B is being pressed at the time when step S15 is executed, the route R4 is selected and the process proceeds to step S17. Since the muteA key flag is 0, the route R5 is selected in step S17 and the process proceeds to step S23.

The current flag states are muteB key flag and mute
Since the B flags are both 1 and the mute key A is not pressed, steps S23, S24, S25 and S26 are executed, and the execution from step S0 is repeated again.

In this way, when the mute key B is pressed, the second receiving section 2 is in the mute state and the first receiving section 1 is in the non-mute state.

Next, when the mute key B is pressed again, the route R1 is selected in step S1 and step S7 is executed. Since the mute key B has been pressed, the muteB key flag is set to 1 (step S8). Since the second receiver 2 is currently in the mute state, the muteB flag is set to 1. Therefore, the muteB flag is reset to 0 in step S12 based on step S9, and the mute circuit 2f of the second receiver 2 is set. To the non-mute state.

Mute key A is not pressed, so steps S14 and S15
Are executed in order. Since the mute key B is being pressed at the time when step S15 is executed, the route R4 is selected and the process proceeds to step S17. Since the muteA key flag is 0, the route R5 is selected in step S17 and the process proceeds to step S23.

As for the present state of the flag, the muteB key flag is 1, and the muteB flag is 0. Therefore, step S24 is executed after execution of step S23, and mu is executed in step S24.
The route R6 is selected based on the state of the teB flag, and the execution from step S0 is repeated again.

(B) When both the first receiving section and the second receiving section are in the mute state, when the mute key A is pressed and the mute key B is pressed, first, as already described in (a), Step
S0, S1, S2, S3, S4, S5, S7 are sequentially executed, and first the first receiving unit 1 is put in the mute state.

Then, at step S13, the mute key A is pressed, so the route R3 is selected. At the time when step S15 is executed, the mute key B is pressed, so the route R4 is selected, and at step S17. To be executed.

Now, the muteA key flag and the muteA flag are both 1
And if the muteB key flag 2 is 0,
After executing steps S17, S18, S19, S21 in order, mute
The B key flag 2 is set to 1 and then the mute B flag is set to 1 to put the second receiving unit 2 in the mute state (step S1).
1).

As described above, when the mute A key and the mute B key are pressed at substantially the same time, both the first receiving unit 1 and the second receiving unit 2 are in the mute state.

In this state, in order to cancel the mute state of the first receiving section 1, the mute key A may be pressed. Similarly, in order to cancel the mute state of the second receiving section 2, the mute key B may be pressed.

In this embodiment, steps S23, S24, S25, S26, S27, S2
Since 8 is provided, even if the mute key A is pressed while the mute key B is being pressed, it can be surely determined that the mute key A and the mute key B are being pressed almost simultaneously. It can be surely determined that it is done.

Further, in this embodiment, the LED 9 is turned on when the first receiving section 1 is in the mute state, and the LED 10 is turned on when the second receiving section 2 is in the mute state.

(F) Effect of the Invention According to the wireless device of the present invention, when the mute key of one receiving unit is pressed to put the receiving unit into the mute state, the other receiving unit is released from the mute state.

Furthermore, when the mute key of the first receiving section and the mute key of the second receiving section are simultaneously pressed, the mute circuits of the two receiving sections are put in the mute state, so that the operability of the keys is improved.

In addition, it has excellent features such as a simple structure and a low cost, which makes it easy to implement.

[Brief description of drawings]

1 to 3 show an embodiment of a radio apparatus according to the present invention, FIG. 1 is a functional block diagram, FIG. 2 is a block diagram, and FIGS. 3 (A) and (B) are flow charts. Description of main symbols 1: First receiver 1f: Mute circuit of first receiver 2: Second receiver 2f: Mute circuit of second receiver 4: Microcomputer A, B: Mute key

Claims (2)

[Scope of utility model registration request] 1. A mute circuit capable of operating independently in each of the two receiving sections, and each mute circuit is provided with a mute key for putting the mute circuit into a mute state and a non-mute state. In the wireless device, when the mute circuit of the first receiving section is in the mute state, first setting means for setting the mute circuit of the second receiving section to the non-mute state, and mute of the second receiving section. When the circuit is in the mute state, the second setting means for setting the mute circuit of the first receiving section to the non-mute state is provided, and the mute key of one receiving section is pressed to put the receiving section in the mute state. The wireless device is configured such that the mute state of the other receiving unit is released when the above condition occurs. 2. A key state identifying means for identifying that the mute key of the first receiving section and the mute key of the second receiving section are simultaneously pressed, and the mute key of the first receiving section and the mute key of the first receiving section are provided. 2. The wireless device according to claim 1, wherein when it is identified that the mute key of the two receiving units is pressed at the same time, the two receiving units are both in the mute state.