JPH0531375U - All mode wireless communication device - Google Patents

Abstract

(57) [Summary] [Purpose] Adjust the squelch adjustment volume to SSB or C
An all-mode wireless communication device configured to be used as a RIT adjustment volume when in the W mode. [Structure] A mode discriminating means for discriminating a reception mode at that time by inputting an output value (voltage level) from one volume to a microcomputer, and an inputted volume output value as squelch circuit control data corresponding to the mode. The control signal switching means for switching to the RIT circuit adjustment data is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an all-mode wireless communication device, and more particularly to an all-mode wireless communication device suitable for adjusting the function of one volume depending on the mode.

[0002]

[Prior art]

 As a conventional all-mode wireless communication device, a structure having a configuration shown in the block of FIG. 4 has been provided.

In the figure, 1 is a squelch circuit, 4 is a RIT circuit, 7 is a squelch volume, and 8 is a RIT volume.

As a block configuration, the squelch volume 7 is directly connected to the squelch circuit 1 and the RIT volume 8 is directly connected to the RIT circuit 4 in the same manner, and each circuit is adjusted as a dedicated volume. It was

[0005]

[Problems to be solved by the device]

 However, in the conventional all-mode wireless communication device, as shown in FIG. 4, the squelch circuit 1 and the RIT circuit 4 are provided with dedicated squelch volume 7 and RIT volume 8, respectively. When the mode is FM, the squelch volume 7 is adjusted. When the mode is SSB or CW, the RIT volume 8 is adjusted. Depending on the mode, there is a volume that does not require any operation. There is a drawback that a wasteful surface is generated.

Further, even if one volume is switched between squelch and RIT depending on the mode, a switching circuit is required and the circuit becomes complicated.

The present invention has been made in view of the above points, and the purpose thereof is to solve the conventional drawbacks and to adjust the RIT by using a squelch volume without adding a volume dedicated to the RIT. It is about to provide an all-mode wireless communication device that is designed to do.

[0008]

[Means for Solving the Problems]

 FIG. 1 is a functional block diagram of the present invention. The all-mode wireless communication device of the present invention is an all-mode wireless communication device capable of receiving at least two radio wave formats of SSB or CW and FM and equipped with a scale circuit. A mode discriminating means for discriminating a mode by a microcomputer between the squelch circuit and a volume for controlling and procuring the squelch circuit; The control signal switching means for switching to and the D / A converter for converting the control signal once converted into the digital signal into the analog signal are provided, and the squelch circuit and the RIT circuit can be controlled and adjusted by one volume. It is a thing.

[0009]

[Action]

 The operation of this invention will be described with reference to FIG.

According to the present invention, in an all-mode wireless communication device capable of receiving at least two radio wave types of SSB or CW and FM and provided with a squelch circuit, the above squelch circuit and this squelch circuit are controlled and procured A mode discriminating means for discriminating the mode by a microcomputer between the volume and the control signal switching means for switching the signal from the volume to the squelch circuit and the RIT circuit by the output of the mode discriminating means, and once, Since a D / A converter that converts the control signal converted into a digital signal into an analog signal is provided, when the mode is set to FM, the volume becomes a squelch adjustment volume and the mode is set to SSB or CW. Then, the volume will become an RIT adjustment volume and can be operated. The volume of can be shared for squelch and RIT adjustment.

[0011]

【Example】

 An embodiment of the all-mode wireless communication device according to the present invention will be described with reference to FIGS.

In the figure, 1 is a squelch circuit that cuts and adjusts a low-frequency audio output according to an input signal level in FM mode, and 2 and 3 are squelch circuits and RIT circuits that convert digital data from a microcomputer into analog signals. Output D / A converter, 4 RIT circuit for finely adjusting the oscillation frequency of the local oscillation circuit at SSB or CW reception, 5 at squelch volume at FM reception, and at SSB or CW reception A volume that operates as a RIT adjustment volume, and 6 is a microcomputer that controls the squelch circuit 1 and the RIT circuit 4.

Further, the microcomputer 6 is composed of a central processing unit that performs data arithmetic processing, a ROM that stores a program that stores a program to be executed, a RAM that stores data, and an input / output port. Is connected to the input port of the microcomputer 6 and the D / A converters 2 and 3 are connected to the output port of the microcomputer 6.

In the all-mode wireless communication device of the present invention, when the reception mode is FM, the volume 5 operates as a squelch volume, and the output voltage from this volume 5 passes through the A / D converter in the microcomputer 6. Is taken in and processed as a variable amount of squelch and output to the D / A converter 2 as digital data from the output port.

The squelch variable amount data converted into analog data by the D / A converter 2 is added to the squelch circuit 1 to perform a squelch operation corresponding to the squelch variable amount.

When the receiving mode is SSB or CW, the volume 5 operates as a RIT volume, and the output voltage from the volume 5 is taken into the micro computer 6 as a RIT variable amount as in the squelch operation. It is processed and output to the D / A converter 3 as digital data from the output port.

The RIT variable amount data converted into analog data by the D / A converter 3 is added to the RIT circuit 4 to perform the RIT operation corresponding to the RIT variable amount.

Next, the operation of this all-mode wireless communication device will be described based on the flowchart of FIG.

When the all-mode wireless communication device starts operating, the set amount of the volume 5, that is, the voltage value output is read into the microcomputer 6 (step S1).

Next, it is checked how the reception mode is set (step S2), and if the mode is set to SSB or CW, the input set amount data of the volume 5 is converted into digital data. The data is output to the D / A converter 3 (step S3), and the squelch data 0, that is, the data not performing the squelch operation is output to the D / A converter 2 (step S4).

The data of the set amount of the volume 5 output to the D / A_converter 3 is converted into an analog voltage to operate the RIT circuit 4 (step S5).

If the mode is set to FM in step S2, the set amount data of the input volume 5 is output as digital data to the D / A converter 2 (step S6), and the RIT circuit 4 is sent to the D / A converter 3. The data of which the operation of acts as the midpoint of RIT is output (step S7).

The set amount data of the volume 5 output to the D / A converter 2 is converted into an analog voltage to operate the squelch circuit 1 according to the set amount of the volume 5 (step 8).

As described above, the all-mode wireless communication device of the present invention is an all-mode wireless communication device that is capable of receiving at least two radio wave formats of SSB or CW and FM and that includes a squelch circuit. A mode discriminating means for discriminating a mode by a microcomputer between a volume for controlling and procuring this squelch circuit, and a control signal switching for switching a signal from the volume to a squelch circuit and a RIT circuit by the output of this mode discriminating means Means and a D / A converter for converting a control signal once converted into a digital signal into an analog signal are provided, and control and adjustment of the squelch circuit and the RIT circuit are enabled by one volume.

[0025]

[Effect of the device]

 Since the all-mode wireless communication device according to the present invention is configured as described above, it has the following effects.

Since one volume is for setting the squelch amount when the mode is FM and for adjusting the RIT when the mode is SSB or CW, one volume can be used without increasing the volume on the operation unit. There is an effect that two function adjustments can be performed.

Moreover, it has an excellent feature that it can be realized without using a dedicated microcomputer and has a simple configuration.

[Brief description of drawings]

FIG. 1 is a functional block diagram of the present invention.

FIG. 2 is a hardware block diagram showing an embodiment of the present invention.

FIG. 3 is a flowchart of this device.

FIG. 4 is a block diagram of a hardware configuration of a conventional example.

[Explanation of symbols]

 1 Squelch circuit 2,3 D / A converter 4 RIT circuit 5 Volume 6 Microcomputer

Claims (1)

[Scope of utility model registration request] 1. In an all-mode wireless communication device capable of receiving at least two radio wave formats of SSB or CW and FM and provided with a squelch circuit, between the squelch circuit and a volume for controlling and adjusting the squelch circuit. A mode discriminating means for discriminating the mode by a microcomputer, and a signal from the volume is output to the squelch circuit and RIT (Recei) by the output of the mode discriminating means.
ing Incremental Tuning circuit) and a D / A converter for converting a control signal once converted into a digital signal into an analog signal, and controlling the squelch circuit and the RIT circuit with a single volume. An all-mode wireless communication device that allows adjustment.