JPH0210609B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an amateur wireless communication device that automatically connects communication channels.

(Prior Art) Conventional amateur wireless communication devices are configured to manually set a communication channel with a communication partner.

For this reason, when using conventional amateur radio communication equipment, it is not possible to search for an empty communication channel (hereinafter referred to as an empty channel) and automatically connect the communication channel.

(Object of the Invention) The present invention has been made in view of the above, and an object of the present invention is to provide an amateur wireless communication device that can automatically turn an empty channel into a communication channel.

(Configuration of the Invention) FIG. 1 is a functional block diagram showing the configuration of the present invention.

1 is a communication device main body, which includes a transmitting section 2, a receiving section 3,
an antenna switching unit 4, a frequency synthesizer unit 5, a transmission/reception switching unit 6 that selectively supplies power to the transmitting unit 2 and the receiving unit 3 to switch between transmission and reception, an audio signal amplifier 8 that amplifies the output of the microphone 7, Modulated signal switching means 10 which switches between the output of the audio signal amplifier 8 and the output of the output data generation means 9 described later and supplies the modulated signal to the transmitter 2; an audio signal amplifier that receives and amplifies the audio signal from the receiver 3; 1
1, and the transmitting section 2 modulates the oscillation output of the frequency synthesizer section 5 by using the output of the modulation signal switching means 10 as a modulating signal and transmits the modulated signal, and when receiving, the transmitting section 2 modulates the output of the frequency synthesizer 5 as a local oscillator. It is configured to convert the received signal frequency into an intermediate frequency and receive it as an output. Note that 12 represents an antenna, and 13 represents a speaker.

Microphone 7 has a push to talk (PTT) switch 14.
is installed, and is configured so that by turning on the PTT switch 14, the transmission/reception switching means 6 is switched from the receiving side to the transmitting side. Further, the antenna switching section 4 is configured to switch in conjunction with the transmission/reception switching means 6.

The automatic channel selection device 15 includes a call instruction means 16, an empty channel search means 17 for searching for an empty channel in response to the output of the call instruction means 16, and a second storage means 20 for storing frequency data. The frequency data of the empty channel found by the empty channel search means 17 is sent to the third selection means 25.
When an empty channel is detected, the third selection means 25 is supplied to the empty channel searching means 17.
Switching the transmission/reception switching means 6 from the reception side to the transmission side and the modulation signal switching means 10 from the audio signal amplifier 8 side to the output side of the output data generation means 9 for a predetermined period of time to the frequency data side of the empty channel output from the When this predetermined period has passed, the fourth
The selection means 21 is configured to supply frequency data stored in a second storage means 20 to the frequency synthesizer 5 in place of frequency data stored in a first storage means 22, which will be described later. . Further, the output of the third selection means 25 is supplied to the storage means 20.

The automatic channel selection device 15 further includes a group code storage means 26 for storing group codes, a first selection means 23 for selecting and holding a group code to be transmitted from among the group codes stored in the group code storage means 26, and a first selection means 23 for selecting and holding a group code to be transmitted from among the group codes stored in the group code storage means 26. Output data generation means 9 generates corresponding output data by inputting the group code selected and held by the selection means 23 and the frequency data stored in the storage means 20; a first storage means 22 for storing, a second selection means 27 for selecting and holding one or more group codes from among the group codes stored in the group code storage means 26;
The group code comparing means 24 detects a match between the group code selected and held by the selecting means 27 and the group code in the input data received by the receiving section 3, and the frequency data in the input data is determined by the selecting means. 25
It is supplied to Based on the coincidence detection output of the group code comparison means 24, the selection means 25 selects frequency data from the input data and supplies it to the storage means 20.

(Function of the Invention) In the amateur radio communication device of the present invention configured as described above, frequency data corresponding to the oscillation frequency at the time of making a call, which has been arranged in advance with the communication partner, is stored in the storage means 22, and the group code is stored. A group code for standby is stored in the means 26,
From among them, the first selection means 23 selects and holds the group code to be transmitted as previously discussed with the communication partner,
The group code storage means 26 is selected by the second selection means 27.
One or more group codes for standby are selected and held from among the memory group codes.

Further, the oscillation frequency of the frequency synthesizer 5 is set by the storage frequency data of the storage means 22 or 20 supplied via the selection means 21. That is, the frequency division ratio of the variable frequency divider of the frequency synthesizer 5 is stored in the storage means 22 supplied via the selection means 21.
Or, it is set according to the storage frequency data of 20.

On the other hand, the transmission/reception switching means 6 is normally switched to the reception side, and receives radio waves at a set reception frequency determined by the oscillation frequency of the frequency synthesizer 5.

When the call instruction means 16 issues a call instruction, the empty channel search means 17 which receives the call instruction signal searches for an empty channel. When an empty channel is found by the empty channel search means 17, the frequency data of the empty channel is stored in the second storage means 20 via the selection means 25.

On the other hand, the group code selected and held by the first selection means 23 and the storage frequency data stored in the second storage means 20 as described above are stored in the output data generation means 9, and predetermined data processing is performed. and output data is generated.

On the other hand, when the empty channel search means 17 detects an empty channel, it generates an output at least until the end of transmitting the output data to the modulation signal switching means 10 and the transmission/reception switching means 6. The modulated signal switching means 10 receiving this output is switched from the output selection side of the audio signal amplifier 8 to the output selection side of the output data generation means 9, and the transmission/reception switching means 6 is switched from the reception side to the transmission side. Further, the fourth selection means 21 selects the frequency data stored in the storage means 22 and applies the selected data to the frequency synthesizer 5.

Therefore, the modulated signal supplied to the transmitter 2 is the output data generated by the output data generation means 9, and the frequency data in the output data is the frequency data stored in the second storage means 20, that is, the frequency data of the empty channel. It is. The carrier frequency of the modulated wave transmitted from the transmitter 2 is stored in the first storage means 22.
This is the frequency corresponding to the stored frequency data, and this carrier wave is modulated by the output data and transmitted.

When the transmission of the output data is completed after a predetermined period has elapsed, the empty channel search means 17 selects the selection means 21.
At the same time, the signals output to the transmission/reception switching means 6 and the modulation signal switching means 10 are eliminated. Therefore, selection means 2
1 selects the frequency data stored in the second storage means 20 instead of the frequency data stored in the first storage means 22 and supplies it to the frequency synthesizer 5 . Further, the modulation signal switching means 10 is switched to the output side of the audio signal amplifier 8, and the transmission/reception switching means 6 is switched to the receiving side.
As a result, the frequency synthesizer 5 is set to a frequency corresponding to the frequency data of the empty channel, and the amateur wireless communication device enters a state in which it waits for radio waves having the frequency of the empty channel to be transmitted.

Next, the operation of receiving a call from another amateur wireless communication device and being drawn into a designated empty channel will be explained.

The group code in the received input data is compared in the group code comparison means 24 with the stored group code selected and held in the second selection means 27, and a match is detected. When a match is detected, the third selection means 25 is switched by the output of the group code comparison means 24, and the frequency data in the input data of the received signal is selected and supplied to the second storage means 20. At this time, the fourth selection means 21 selects the frequency data stored in the second storage means 20, and the frequency synthesizer 5 is set to a frequency corresponding to the frequency data in the input data of the received signal. As a result, the amateur radio communication device is automatically drawn into the empty channel.

Furthermore, by pressing the PTT switch 14, the transmission/reception switching means 6 is switched to the sending side and transmission is performed, and by stopping the pressing of the PTT switch 14, the transmission/reception switching means 6 is switched to the receiving side. Communication will take place on the frequency of the empty channel.

(Examples of the Invention) Next, the present invention will be specifically explained with reference to Examples.

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

The transmitter 2A includes an audio signal amplifier 8 that amplifies the output of the microphone 7, a modulated signal switching means 10 that receives the output of the audio signal amplifier 8 and output data modulated by a modem 41 (described later), and an output of the modulated signal switching means 10. a modulator 31 that modulates the oscillation output of the frequency synthesizer 5 as a modulation signal;
, and a high-frequency power amplifier 33 that amplifies the output of the high-frequency amplifier 32 and supplies it to the antenna 12 via the antenna switching unit 4 . Send the output of

The receiving section 3A is a high frequency amplifier 3 that receives and amplifies the modulated wave supplied via the antenna switching section 4.
4. A mixer 35 that mixes the oscillation output of the frequency synthesizer 5 and the output of the high frequency amplifier 34 and converts it into an intermediate frequency signal; an intermediate frequency amplifier 36 that amplifies the output of the mixer 35, that is, the intermediate frequency signal; a demodulator 37 for demodulating the output of the demodulator 37; and a muting means 12 for muting the output of the demodulator 37.
0, an audio signal amplifier 11 that amplifies the audio signal outputted through the muting means 120 and drives the speaker 13; detects whether the channel is an empty channel by receiving the demodulated output and detecting whether the level is below a predetermined level; The demodulator 3 is equipped with a comparator 39 to
The output of 7 is supplied to a modem 41.

On the other hand, 80 is a microcomputer,
Basically CPU81, ROM82, RAM83,
Input port 84, output port 85 and timer 8
It consists of 6.

Code selection means 101 includes a switch for selecting a call sign code setting instruction, a setting code A setting instruction, and a setting code B setting instruction;
102 is a code setting means for setting a call sign and a setting code consisting of a numeric key switch; 11
5 is a group code selection means consisting of a switch and selecting a setting code to be used for standby; 11
8 is a system operating state setting means consisting of a switch and designating whether to automatically connect the communication device to the other party's communication device, 119 is a call setting means consisting of a switch instructing to make a call, and 124 is a rotary encoder and an interface. This is a frequency data setting means for setting frequency data using a down counter, and the output is set in a frequency data storage area 122, which will be described later. Reference numeral 161 denotes a frequency data selection setting means for instructing what the set frequency data corresponds to, and it is specified whether it corresponds to the start channel frequency or frequency data ₁ to ₅ . Reference numeral 129 is a switch, and priority selection state setting means specifies that predetermined frequency data should be preferentially selected as an empty channel when searching for an empty channel. Reference numeral 134 is a switch, which is opposite to the priority selection state setting means 129. selection exclusion state setting means for specifying that predetermined frequency data should not be selected as an empty channel when searching for an empty channel;
139 is a reset switch, 148 is a reverse setting means for instructing the replacement of the start channel frequency and the empty channel frequency, and 150 is a code squelch setting means for instructing to automatically release the squelch by using the group code as a squelch code. be.

A program for controlling the CPU 81 is written in the ROM 82, and the input port 84 receives the output of the code selection means 101, the output of the code setting means 102, the output of the group code selection means 115, the output of the system operating state setting means 118, Call setting means 1
19, output of frequency data setting means 124, output of frequency data selection setting means 161, output of priority selection state setting means 129, output of selection exclusion state setting means 134, reset switch 139
, the output of the reverse setting means 148 , the output of the code squelch setting means 150 , the output of the PTT switch 14 , the demodulated output data of the modem 41 converted by the serial/parallel converter 42 , the comparator 39
The output is supplied. The CPU 81 reads the signals and data supplied to the input port 84 according to the program stored in the ROM 82 when necessary, stores them in the RAM 83, performs calculations and comparison data processing, and performs calculations and comparison data processing. It is determined whether the input state has continued for a certain period of time, etc.
According to the calculation, comparison, processing, and judgment results, the data are displayed on the data display 112, call sign display 114, empty channel search display 126, line connection display 146, and code squelch display 151 via the output port 85. The signal is sent to the frequency synthesizer 5, the frequency data (dividing ratio) is sent to the transmission/reception switching unit 6, the switching signal is sent to the modulation signal switching unit 10, and the output data is sent to the modem 41 via the parallel/serial converter 40. , the mute control signal is outputted to the mute means 120 with or without latching as necessary.

In this embodiment configured as described above, for example, transmission and reception are performed in the 144 MHz band (144.520 MHz to 145.780 MHz), and the channel is set in 20 kHz steps.
In this case, the number of channels will be 64 channels.

Incidentally, FIG. 3 further shows the block diagram shown in FIG. 2 as a functional block diagram.

Hereinafter, the operation of one embodiment of the present invention will be explained with reference to the flowcharts shown in FIGS. 4 to 6 as well as FIG. 3.

First, when the amateur wireless communication device of the present invention is operated, it enters a receiving state unless a special operation is performed.

When the program is started, the code selection means 101 detects whether setting a call sign code has been selected (step 1).
_a1 ). The code selection means 101 can specify setting of a call sign code, setting codes A and B, and is controlled to the setting state of setting code A by a signal from the microcomputer 80 when a call sign code setting instruction is given as described later. It is configured so that it can be done. Further, the setting codes A and B are referred to as setting codes in order to function as so-called group codes and code squelch codes, but will be referred to as group codes A and B below.

Further, settings such as a call sign code are set by the code setting means 102. For this purpose, for example, one character of the ASCII code is specified by pressing the code setting means 102 four times, and the upper three bits of the 7-unit ASCII code are obtained by adding the values indicated by the code setting means 102 pressed the first two times. By adding the hexadecimal number corresponding to the next two pressed values indicated by the code setting means 102, the hexadecimal number corresponding to the lower 4 bits of the 7-unit ASCII code is obtained.

When setting a call sign code is selected in step _a1 , a second count area (hereinafter referred to as a counter) 104 provided in the RAM 83 is used to set the number of digits of the call sign. Cleared (step
a ₂ ), and then a first memory provided in the RAM 83 for counting the number of times the code setting means 102 is pressed corresponds to one character of the ASCII code.
counter 103 is cleared (step _a3 ).
Next, the key switch output supplied from the code setting means 102 is loaded into the call sign code calculating means 106 which adds the values pressed twice in order to convert it into an ASCII code (step _a4 ), and then the first The counter is incremented by "+1" (step _a5 ). Steps _a4 to _a5 are repeated the number of times corresponding to one ASCII code character (step _a6 ). The input code is then converted to an ASCII code (step _a7 ), and the converted ASCII code is stored in the call sign code storage area 107 provided in the RAM 83, and the stored contents are displayed as a call sign through the code calculation means 113. Vessel 11
4 (step _a8 ). Then, the second counter 104 is incremented by "+1" (step _a9 ), and steps _a3 to _a9 are repeated the number of times corresponding to the digit of the call sign (step _a10 ). When the count value of the second counter 104 reaches a value corresponding to the number of digits of the call sign in step _a10 , the call sign code is completely stored in the call sign code storage area 107, and the call sign code is stored in the RAM 83. Call sign code setting state storage area 10 provided
A flag is set at 8 (step _a11 ). Then, the call sign code selection of the code selection means 101 is canceled and the position where group code A is to be set is selected (step _a12 ).

Following step _a12 , it is detected in the code selection means 101 whether setting a group code has been selected (step _a13 ).

In this example, the group codes are group codes (A) and (B).
Although this example shows a case where two group codes can be set, it is not necessary to limit the setting to two group codes.

If selecting a call sign code is not selected in step a ₁ , step a ₁
Following this, step _a13 is executed.

In step _a13 , if it is selected to set the group code, a third counter 1 provided in the RAM 83 and counting the number of digits of the group code is activated.
05 is cleared (step a ₁₄ ), and it is detected whether the selected group code is group code (A) (step a ₁₅ ). When it is detected in step _a15 that the group code (A) is selected, the input code is loaded into the first group code storage area 109 provided in the RAM 83 (step _a16 );
The third counter 105 is “+1” (step
a ₁₇ ), the set group code (A) is displayed on the data display 112 via the data display selection means 111 (step a ₁₈ ). 3rd step following step a ₁₈
Steps _a16 to _a18 are repeated until the count value of the third counter 105 reaches the number of digits of the group code, and when the count value of the third counter 105 reaches the number of digits of the group code (step _a19 ), Step _a13 is executed. Therefore, the first group code storage area 1
The group code (A) set to 09 is now stored.

If the group code selected in step _a15 is not group code (A), it is group code (B), and in this case, following step _a15 , steps _a15 to _a19
steps a ₁₆ to _{a 19} similar to steps a ₂₀ to a 19
a ₂₃ is executed. As a result, the group code (B) set in the second group code storage area 110 provided in the RAM 83 is stored.

In step _a13 , if setting a group code is not selected, it is detected whether group code (A) has been selected by the group code selection means 115 to be used for standby (step a13).
_a24 ). The group code (A) is selected by the group code selection means 115.
is selected, it is detected whether the group code (A) is stored in the first group code storage area 109 (step _a25 ).

When the group code (A) is stored in the first group code storage area 109 at step _a25 ,
Invert the flag in the group code (A) selection permission storage area 116 provided in the RAM 83 (step
_a26 ). When the flag in the group code (A) selection permission storage area 116 is set in step _a26 , the set group code (A) is displayed on the data display 112 with a specific display such as a decimal point (step A26). _a27 ), when the flag in the group code (A) selection permission storage area 116 is reset in step _a26 , a specific display such as a decimal point is turned off on the data display 112, and the set group code is (A) will be displayed (step a ₂₇ ).

Next, it is detected whether the group code (B) has been selected by the group code selection means 115 to be used for standby (test a ₂₈ ).

When the group code (A) is not selected in step _a24 and the group code (A) is not set in step _a25 , step _a28 is executed following steps _a24 and _a25 .

When the group code (B) is selected in step _a28 , it is detected whether the group code (B) is stored in the second group code storage area 110 in the same way as in step _a25 (step _a29 ). .

When the group code (B) is stored in the second group code storage area 110 at step _a29 ,
Invert the flag in the group code (B) selection permission storage area 117 provided in the RAM 83 (step
_a30 ). When the flag in the group code (B) selection permission storage area 117 is set in step _a30 , the set group code (B) is displayed on the data display 112 with a specific display such as a decimal point (step A30). _a31 ), when the flag in the group code (B) selection permission storage area 117 is reset in step _a30 , a specific display such as a decimal point is turned off on the data display 112, and the set group code is (B) will be displayed (step a ₃₁ ). It will also be clear from steps _a24 to _a30 that both group codes (A) and (B) can be left selected.

Following step _a31 , a calling routine is executed. Also, if group code (B) is not selected in step _a28 , and group code (B) is not set in step _a29 , step _a28 ,
Following _{step a29} , the calling routine is executed.

As is clear from the above, the call sign code,
Group codes (A) and (B) can be set. Also group code
(A) and (B) are set and memorized even if the steps are not executed.
If it is not selected in a ₂₄ or a ₂₈ , it will not be used for standby etc.

Next, the calling routine will be explained with reference to FIG.

In the calling routine, it is detected whether the system operating state setting means 118, which specifies whether the communication device is automatically connected to the other party's communication device, is set (step b ₁ ). If the system operating state setting means 118 is not set in step _b1 , the calling routine is skipped and a transmitting/receiving routine to be described later is executed. When the system operating state setting means 118 is set in _{step b1} , it is detected whether the call setting means 119 is set (step _b2 ). If the call setting means 119 has not set it in step _b2 , the call routine is skipped and the transmission/reception routine is executed. When the call setting means 119 is set in step _b2 , it is detected whether a call sign is set following step _b2 (step _b3 ). Check call sign code setting status memory area 1 to see if a call sign has been set.
It is detected by whether the flag 08 is set.
If no call sign is set in step _b3 , the calling routine is skipped and the transmitting/receiving routine is executed. Therefore, if a call sign is not set, the call will not be made and the call will not be linked to the other party. However, there is no problem with the system even if a call sign is not set.

When the call sign is set in step _b3 , following step _b3 , the mute means 120 is set to the operating state, that is, the mute-on state (step _b4 ). Since muting is applied in step _b4 , the voice is muted even though it is in the reception state when searching for a free line. Following step _b3 , it is detected whether the line is connected (step _b5 ). Detection of whether a line is connected is performed by checking whether a flag is set in the line connection storage area 121 provided in the RAM 83. When the line is connected in step _b5 , the system enters a re-calling state, which will be described later, and this state is created by performing the calling routine at least once.

When the line is not connected in step _b5 , the frequency data stored in the frequency data storage area 122 provided in the RAM 83 is stored in the start channel data storage area (hereinafter referred to as S channel) provided in the RAM 83. data storage area) 123 (step b ₆ ). Note that the frequency data storage area 122 stores the frequency data negotiated with the communicating party before step _b6 , and is stored in the frequency data setting means 1 consisting of a rotary encoder or the like.
24, and this setting data is stored in the frequency data storage area 122.

Following step _b6 , the standby state is prohibited (step _b7 ). Prohibition of standby state
Standby state storage area 1 provided in RAM83
This is done by resetting the 25 flags. Following step _b7 , the empty channel search indicator 126 is lit to indicate that an empty channel search is in progress (step _b8 ). Note that the empty channel may be displayed by sound (for example, a beep sound) in addition to the light display.

In addition, frequency data, for example ₁ , ₂ , respectively set in advance in ₁ data storage area 127 and ₂ data storage area 128 provided in the RAM 83 are stored.
It is detected whether the priority selection state setting means 129 is set to preferentially select the communication channel as the communication channel (step _b9 ). If the priority selection state is set in step b ₉ , the frequency data
₁ is loaded into the frequency data storage area 122 (step b ₁₀ ), and the first timer 130 starts counting (step b ₁₁ ). Here, the output frequency of the frequency synthesizer 5 is set by the frequency data stored in the frequency data storage area 122. Therefore, the reception frequency (at the time of reception),
The transmission frequency (when transmitting) will be set. Following step _b11 , an empty channel detection means 132 comprising a comparator 39 determines whether the received signal of the frequency corresponding to _one frequency data loaded in the frequency data storage area 122 is below a predetermined level.
(step _b12 ), and the first timer 13 indicates that the received signal level is below a predetermined level.
It is detected whether the set time of 0 continues (step _b13 ). In step _b13 , if the received signal level in step _b12 remains below the predetermined level for the set time of the first timer 130,
It is determined that the frequency corresponding to _one frequency data is an idle line, and step _b27 , which will be described later, is executed.

Further, if the received signal level exceeds the predetermined level in step _b12 , or if the received signal level does not remain below the predetermined level in step _b13 for the set time of the first timer 130, step _b12 is performed. , frequency data ₂ are loaded into the frequency data storage area 122 (step b ₁₄ ), and the first timer 130 starts counting (step b ₁₅ ). Following step b ₁₅ , the frequency data is loaded into the frequency data storage area 122.
It is detected whether the received signal of the frequency corresponding to _{the 2-} frequency data is below a predetermined level (step _b16 ), and it is detected whether the received signal level continues to be below the predetermined level for the set time of the first timer 130. (Step b ₁₇ ). In step _b17 , if the received signal level in step _b16 remains below the predetermined level for the set time of the first timer, it is determined that the frequency corresponding to the frequency data is an idle line, and step b, which will be described later, is performed. Run ₂₇ . If the received signal level exceeds a predetermined level in step _b16 , or if the received signal level does not remain below the set level in step _b17 for the set time of the first timer 130, _a random The frequency data generated by the frequency generating means 133 is loaded into the frequency data storage area 122 (step
b ₁₈ ), then the frequency data stored in the frequency data storage area 122 is increased (step
_b19 ).

In step _b9 , the priority selection state setting means 12
If 9 is not set, step _b18 is executed after step _b9 . In this case, the frequency data that should be prioritized is not selected.

Following step b ₁₉ , ₃ installed in RAM83
Selection exclusion state setting means 13 for excluding frequency data set in advance in a data storage area (not shown) and ₄ data storage areas (not shown) from selecting, for example, ₃ and ₄ as call channels.
4 is set (step
_b20 ). When the selection exclusion state is set in step b ₂₀ , the frequency data storage area 1
Frequency data comparison means 1 determines whether the frequency data stored in 22 matches frequency data ₃ .
38 (step b ₂₁ ). If the frequency data stored in the frequency data storage area 122 is not frequency data ₃ in step _b21 , it is then similarly detected whether it matches frequency data ₄ (step _b22 ). If the frequency data stored in the frequency data storage area 122 is not frequency data ₄ in step b ₂₂ , the frequency corresponding to the frequency data stored in the frequency data storage area 122 is stored in the RAM 83 in step b ₂₂ . It is detected whether the frequency is within the amateur band stored in the set range frequency data storage area 135 (step _b23 ). When step _b23 is executed via steps _b21 to _b22 , the step
In _b19 , the frequency data stored in the frequency data storage area 122 does not correspond to the frequency to be selectively excluded.

In step b ₂₀ , selection exclusion state setting means 1
34 is not set, step _b23 is executed following step _b20 . In this case, it is not determined whether the frequency data should be selectively excluded.

If the frequency corresponding to the frequency data stored in the frequency data storage area 122 is within the amateur band in step _b23 , the first timer 130 starts counting (step _b24 ), and then the received signal level is determined. It is detected whether the received signal level is below a predetermined level (step b ₂₅ ), and whether the received signal level continues to be below a predetermined level for the set time of the first timer 130 is detected (step b ₂₆ ). In step _b26 , the first timer 13 indicates that the received signal level is below a predetermined level.
If it continues for the set time of 0, it means that the frequency corresponding to the frequency data stored in the frequency data storage area 122 is an idle line in step _b19 . Further, following step _b26 , the frequency data stored in the frequency data storage area 122 is loaded into the empty channel data storage area 136 provided in the RAM 83 (step _b27 ). Following step _b27 , the frequency data stored in the S channel data storage area 123 is loaded into the frequency data storage area 122 (step _b28 ).

Here, when step _b28 is executed through step _b13 or step _b17 , it is frequency data ₁ or ₂ that is stored in the empty channel data storage area 136, and step b28 is executed through _{steps b20} to _b27 . When ₂₈ is executed, the frequency data stored in the empty channel data storage area 136 is never frequency data ₃ or ₄ . Further, when step _b28 is executed through step _b5 , the frequency data stored in the S channel data storage area 123 is loaded into the frequency data storage area 122 again in step _b28 with the line connection being established. As a result,
It means calling again.

Following step _b28 , it is detected whether the received signal level of the frequency corresponding to the frequency data loaded into the frequency data storage area 122 is below a predetermined level (step _b29 ), and if it exceeds the predetermined level, the PTT switch 14 is activated. The on state is detected (step _b30 ). In step b ₃₀ , PTT
When the switch 14 is in the on state, if the received signal level is below a predetermined level in step _b29 , it is assumed that the search for an empty channel has ended, and the empty channel search indicator 126 is turned off (step _b31 ).
Here, when step _b31 is executed via step _b30 , the received signal level is above a predetermined value, but the call is forced to be made. Note that the reason why it is detected in step _b29 whether the received signal level is below a predetermined level is to confirm at this point whether the start channel is an idle line.

When the frequency data stored in the frequency data storage area 122 in steps b ₂₁ , b ₂₂ , and b ₂₃ matches frequency data ₃ and frequency data ₄ , it corresponds to a frequency outside the amateur band. Step b ₂₅
If the received signal level exceeds the predetermined level, steps b ₂₁ , b ₂₂ , b ₂₃ , and b ₂₅ are performed.
It is detected whether the PTT switch 14 is on (step _b32 ), and if the PTT switch 14 is not on, it is detected whether the reset switch 139 is on (step _b33 ). If the reset switch 139 is in the OFF state at step _b33 , step _b19 is executed following step _b33 .

When the PTT switch 14 is in the on state in step _b32 and the reset switch 139 is in the on state in step _b33 , there is an instruction to stop the call, and in step _b32 ,
b Next to ₃₃ , S channel data storage area 12
3 is loaded into the frequency data storage area 122 (step _b34 ),
Step _b51 , which will be described later, is executed. step b ₃₀
If the PTT switch 14 is not in the on state, the reset switch 13 is turned on in step _b30 .
It is detected whether the reset switch 139 is on (step _b35 ), and if the reset switch 139 is not on, step _b29 is executed following step _b35 . If the reset switch 139 is in the on state in step _b35 , this means that an instruction is given to stop the call, and step _b51 , which will be described later, is executed after step _b35 .

Following step _b31 , the frequency data stored in the empty channel data storage area 136 is loaded into the output data encoding means 141 (step _b36 ), and then the group code (A) selected by the code selection means 101 is output. The call sign data stored in the call sign code storage area 107 is loaded into the data encoding means ₁₄₁ (step b37), and the call sign data stored in the call sign code storage area 107 is loaded into the output data encoding means 141 (step _b38 ).
The loaded data is then encoded into, for example, Hagelberger code in the output data encoding means 141 (step _b39 ). Therefore, in step b ₃₇ , the call sign code,
The group code and empty channel frequency data will be encoded.

Following step _b39 , the transmitting section 2 is set to a data transmitting state, that is, the output obtained by converting the output of the output encoding means 141 by the parallel/serial converting means 40 is guided to the transmitting section (step _b60 ), and the communication device switches to transmit/receive. The means 6 is set to a transmitting state (step _b41 ), and then the synchronization data generated by the synchronization data generator 144 is transmitted (step _b42 ).
Following step _b42 , the output data encoded in step _b39 is subsequently transmitted (step _b43 ). Therefore, by executing step _b43 , a so-called call is made in which the frequency corresponding to the S channel frequency data is modulated with the data including the empty channel frequency data and transmitted.

Following step _b43 , the transmitting state is canceled and the transmitting/receiving switching means 6 is returned to the receiving state (step B43).
_b44 ), and after the data transmission state is released (step _b45 ), the frequency data stored in the empty channel data storage area 136 is loaded into the frequency data storage area 122 (step _b46 ). Therefore, the communication device is set to the reception frequency of the searched empty channel, and is set to a state in which it waits for transmission from the other party. Following step b ₄₆ , data display 1
12, the frequency corresponding to the frequency data stored in the empty channel data storage area 136 is displayed (step _b47 ). Following step _b47 , a flag is set in the line connection storage area 121 (step _b48 ). In step b ₄₈ ,
This means that it is assumed that the sending side can unilaterally establish a line connection with the receiving side. Following step b ₄₈ ,
The line connection indicator 146 lights up (step
_b49 ). After step b ₄₉ , the third timer 147
time measurement is started (step _b50 ). The set time of the third timer 147 is set to a time at which it is assumed that no line connection has been made if there is no input from the other party within this set time.

Following step _b50 , a flag in the reverse state storage area 149 provided in the RAM 83 to store the output state of the reverse state setting means 148 is reset (step _b51 ). Reverse state storage area 149 is frequency data storage area 1
This indicates whether the frequency data stored in 22 corresponds to an empty channel or an S channel.

Following step _b51 , a flag in the standby state storage area 125 is set, the standby state prohibition is canceled (step _b52 ), and it is then detected whether the code squelch is set by the code squelch setting means 150 (step b). ₅₃ ). If the code squelch is not set in step _b53 , muting by the muting means 120 is canceled after step _b53 (step _b54 ), and the transmission/reception routine is executed. In this state, the frequency corresponding to the empty channel frequency data can be received. step
If the code squelch is set at step _b53 , the code squelch indicator ₁₅₁ is lit at step b53 (step _b56 ), and then the transmission/reception routine is executed. In this state, reception cannot be performed because the muted state is maintained.

Also, when step b ₅₁ is executed after step b ₃₄ and step b ₃₅ , steps b ₂₆ to b ₅₀ ,
This is a state in which steps _b31 to _b50 are skipped, and the search for an empty channel is forcibly canceled and the call is forcibly stopped.

Next, the transmission/reception routine will be explained with reference to FIG.

When the transmission/reception routine is entered, it is detected whether the PTT switch 14 is on (step c ₁ ). step c ₁
When the PTT switch 14 is on,
It is detected whether the code squelch is set (step c ₂ ), and if the code squelch is set in step c ₂ , the code squelch setting is canceled (step c ₃ ), and then the code squelch display 151 is turned off (step
c ₄ ), after the muting by the muting means 120 is released (step c ₅ ), the transmitting/receiving routine is ended and the routine is returned to the start.

PTT when steps _c1 to _c5 are executed.
Reception is possible by turning off the switch 14.

When the code squelch is not set in step _c2 , it is detected whether the system operating state setting means 118 is set in the same manner as in step _b1 following step _c2 (step _c6 ). If the system operating state setting means 118 is not set in step _c6 , it is set to the transmitting state (step _c7 ), and then it is detected whether the PTT switch 14 is on (step _c8 ). If the PTT switch 14 is in the on state in step _c8 , step _c7 is executed. Therefore, when the PTT switch 14 is turned on in step _c8 , transmission continues until the PTT switch 14 is turned off in step _c8 . In this case, the transmission is not performed under system operating conditions, but is performed using a conventional amateur wireless communication device. If the PTT switch 14 is in the OFF state in step _c8 , the transmitting state is canceled (step _c9 ), the transmitting and receiving routine is completed, and the routine is returned to the start.

When the system operating state setting means 118 is set in step _c6 , in step _c6 , a specific frequency data storage area 152 provided in the RAM 38 is preset and corresponds to a frequency outside the amateur band. The frequency data is loaded into the output data encoding means 141 in place of the frequency data stored in the empty channel data storage area 136 (step _c10 );
Next, the group code (A) is output data encoding means 1
The call sign data stored in the call sign code storage area ₁₀₇ is loaded into the output data encoding means 141 (step c ₁₂ ), and is encoded by the output data encoding means 141. (Step c ₁₃ ).

Following step _c13 , the transmitter 2 is set to a data transmitting state (step _c14 ), the communication device is set to a transmitting state (step _c15 ), synchronized data is transmitted (step _c16 ), and then step c14 is set. The output data encoded in _c13 is transmitted (step _c17 ). Upon completion of this transmission, the data transmission state is released (step _c18 ). step
Specific frequency data storage area 15 by c ₁₀ to c ₁₇
2 is encoded in place of the empty channel data, and is transmitted at a frequency corresponding to the frequency data stored in the frequency data storage area. When the other party receives this transmission, the code squelch is canceled as will be described later.

Transmission is possible upon completion of step _c18 . Following step c ₁₈ , the second timer 15
3 starts counting (step _c19 ). step
Following _c19 , it is detected whether the PTT switch 14 is in the off state (step _c20 ), and if the PTT switch 14 is not in the off state, it waits for the set time of the second timer 153 to elapse (step _c21 ). step
When the set time of the second timer 153 has elapsed in step c ₂₁ , the data transmission state is set (step c ₂₂ ) as in step c ₁₄ , synchronous data is transmitted (step c ₂₃ ), and the specified time in step c ₃₆ is set. Output data obtained by encoding the frequency data stored in the channel data storage area 152 as empty channel data is transmitted (step
c ₂₄ ), the data transmission state is canceled (step
_c25 ), the second timer 153 is reset (step _c26 ), and then step _c19 is executed again.
Therefore, each time the set time of the second timer 153 elapses, the transmission is temporarily interrupted and the transmission of the output data is repeated by _c19 to _c26 . Also,
While the transmission is being performed, the second timer 153 is reset in step _c26 , and the timing of the second timer 153 is repeated anew.

When the PTT switch 14 is in the OFF state in step _c20 , it means that there is no intention to communicate, and following step _c20 , output data is transmitted in the same way as in steps _c22 to _c25 (steps _c27 to c25).
c ₃₀ ), and then the transmission state is canceled (step
c ₃₁ ), the third timer 147 starts counting (step c ₃₂ ), and then the transmission/reception routine is terminated.
You will be returned to the start again. Step _c2 to step _c32 are the transmission routine.

When the PTT switch 14 is in the OFF state in step _c1 , it is detected whether a flag is set in the line connection storage area 121 after step _c1 (step _c33 ). When _the flag is set in step _c33 , that is, when the line is connected, it is detected whether the reset switch 139 is turned on (step _c34 ). If the reset switch 139 is off, that is, not reset in step _c34 , it is detected whether there is input data following step _c34 (step _c35 ).
As described above, in this embodiment, the device is normally in the receiving state. When output data from the other party is received in step _c35 , the input data is converted into parallel data by the serial/parallel conversion means 42 and decoded by the input data decoding means 155 (step _c36 ) _. , it is detected whether the group code (A) is selected (step _c37 ), and if the group code (A) is selected, the group code in the input data is determined to be the group code (A). A match is detected by the code comparison means 156 (step _c38 ). If the group code (A) is not selected in step _c37 , and if the group code in the input data does not match the group code (A) in step _c38 , the group code is selected in steps _c37 and _c38 . It is detected whether (B) is selected (step _c39 ), and if group code (B) is selected, the group code in the input code matches the group code (B). is detected (step _c40 ).
If the group code (B) is not selected in step _c39 , and if the group code in the input data does not match the group code (B) in step _c40 , the third code is selected after steps _c39 and _c40 . timer 14
It is detected whether the set time of 7 has elapsed (step _c41 ). Further, if there is no input data at step _c35 , step _c41 is executed following step _c35 . As is clear from steps _c37 to _c40 , waiting is performed using group codes (A) and (B).

Therefore, no reset instruction has been given, and
The third timer 14 is activated when there is no input data or when there is input data but the group code in the input data does not match the group code in the selected state.
After the set time of 7 has elapsed, muting is performed by the muting means 120 (step _c42 ).
Following step _c42 , the frequency data stored in the S channel data storage area 123 is loaded into the frequency data storage area 122, and the communication device is stored in the S channel data storage area 123 from the reception state of the empty channel frequency. A reception state is established for the frequency corresponding to the data (S channel data negotiated with the other party in step _b6 ) (step _c43 ). Next, it is detected whether the code squelch is set (step _c44 ), and if the code squelch is not set, muting by the muting means 120 is canceled (step _c45 ), and the flag in the line connection storage area 121 is reset. (step c ₄₆ ). If the code squelch is set in step _c44 , step _c46 is executed after step _c44 . Following step _c46 , the line connection indicator 146 is turned off (step _c47 ), the transmission/reception routine is ended, and the process returns to the start.

Also, in step _c34 , the reset switch 1 is
39 is in the on state, that is, when a reset instruction is given, step _c46 is executed following step _c34 .

In step _c33 , line connection storage area 12
When the flag 1 is reset, it is detected whether the reverse state setting means 148 is set (step _c76 ). When the group code in the input data matches the group code (A) in step _c38 , and when the group code in the input data matches the group code (B) in step _c40 , step _c38 ;
Following _c40 , the third timer 147 starts counting (step _c75 ), and then step _c76 is executed. The third timer is reset by the start of timing at step _c75 , and timing starts again from the beginning.

In step _c76 , reverse state setting means 1
48 is set, the state of the flag in the reverse state storage area 149 is detected (step _c48 ). When the flag in the reverse state storage area 149 is set, the frequency data stored in the empty channel data storage area 136 is loaded into the frequency data storage area 122 (step _c49 ). Reverse state storage area 136
When the flag has been reset, the frequency data stored in the S channel data storage area 123 is loaded into the frequency data storage area 122 (step _c50 ), and then the reverse state storage area is loaded in steps _c49 and _c50 . The state of the flag 136 is inverted (step _c51 ). When the flag in the reverse state storage area is reset in step _c48 , the frequency data storage area 12
Empty channel data is stored in step 2, and S channel data is stored in the frequency data storage area 122 when the flag is set, and the storage contents of the frequency data storage area 122 are stored by executing steps _c49 and _c50 . Empty channel data and S channel data will be replaced. Therefore, if the line connection is supposed to have been established from the transmitting side's perspective, but the other party does not appear, it is possible to detect whether the frequency has returned to the one corresponding to the S channel data. Also, step
At _c51 , the contents of the reverse state storage area 149 are set to a state corresponding to the storage contents of the frequency data storage area 122 (empty channel data or S channel data).

Following step _c51 , it is detected whether there is input data (step _c52 ), and if there is no input data, the transmission/reception routine is ended and the process returns to the start. If the reverse state setting means 148 is not set at step _c76 , step _c76
Then step _c52 is executed. step c ₅₂
If there is input data, the input data is decoded (step _c53 ), and then it is detected whether the group code (A) is selected (step _c54 ), and the group code (A) is selected. In the selected state, it is detected whether the group code in the input data matches the group code (A) (step _c55 ). step
c In ₅₅ , the group code in the input data is the group code
(A), the group code (A) is displayed on the data display means 112 (step _c58 ), and it is then detected whether the system is set in the operating state (step _c60 ).

If the group code (A) is not selected in step _c54 , and if the group code in the input data does not match the group code (A) in step _c55 , the group code is selected in steps _c54 and _c55 . It is detected whether (B) is selected (step _c56 ),
When the group code (B) is selected, it is detected whether the group code in the input data matches the group code (B) (step _c57 ). If _{the group code in the input data matches the group code (B) in step c57 ,} the data display 11
The group code (B) is displayed at step 2 (step _c59 ), and step _c60 is executed following steps _c56 and _c57 .
If the group code (B) is not selected in steps c ₅₆ and c ₅₇ , and the group code in the input data does not match the group code (B), steps c ₅₆ and c ₅₇
Then, the transmission/reception routine ends and the process returns to the start.

In step _c71 , it is detected whether the frequency data in the input data is specific data, and if it is specific data, step _c70 is executed after step _c71 , and if it is not specific data, step _c60 is executed. .

When the system is set to the operating state in step _c60 , it is detected whether the frequency corresponding to the empty channel data in the input data is within the amateur band (step _c61 ) _. . If in step _c61 the frequency corresponding to the empty channel data in the input data is not within the amateur band, the transmission/reception routine is ended in step _c61 and the process returns to the start.

In step c ₆₁ , if the frequency corresponding to the empty channel data in the input data is a frequency within the amateur band, the empty channel data in the input data corresponds to a frequency that is provided in the RAM 83 and is not desired to be drawn into the receiving state. It is detected whether the ₅ frequency data to be stored match the frequency data in the stored ₅ data storage area (not shown) (step _c62 ), and if they do not match, the state of the flag in the line connection storage area is detected (step c62). step
c ₆₃ ), if they match, the sending/receiving routine ends and the process returns to the start.

In step c ₆₃ , line connection storage area 12
When the flag 1 is reset, that is, when there is no line connection, the frequency data of the frequency data storage area 122 is loaded into the S channel data storage area 123 (step _c64 );
Next, empty channel frequency data in the input data is stored in the empty channel storage area 123, and this frequency data is stored in the frequency data storage area 122.
(step c ₆₅ ). As a result, the frequency corresponding to the empty channel data in the input data is drawn. Following step _c65 , the call sign included in the input data is displayed on the data display 112 (step _c66 ).

Following step _c66 , the flag in the reverse state storage area 149 is reset (step _c67 ),
Next, the flag in the line connection storage area 121 is set (step _c68 ), the line connection display means 146 is brought into a display state, and the third timer 147 is started to measure time (step _c69 ).

Also, following step c ₆₉ , it is detected whether code squelch is set (step c ₇₀ ).
If the code squelch is not set, the transmission/reception routine ends and returns to the start. If the flag in the line connection storage area 121 is set in step _c63 , step _c70 is executed following step _c63 . Another step
c If the system is not set to the operating state at ₆₀ , the transmission/reception routine is ended and the process returns to the start.

When the code squelch is set in step _c70 , the code squelch is canceled (step _c72 ), the code squelch indicator 151 is turned off (step _c73 ), and muting by the muting means 120 is canceled (step c72). ₇₄ ), then ends the transmission/reception routine and returns to the start.

Therefore, when receiving code squelch, when there is input data, the group code matches the transmitted group code, regardless of the system operating state, and the empty channel frequency data in the input data is specific data. , there is input data, the group code matches the transmitted group code, the system is in operating condition, and the frequency corresponding to the empty channel frequency data in the input data is within the amateur band and corresponds to frequency _5. If the frequency data is not the same, code squelch is canceled and muting is canceled.

Note that steps _c33 to _c74 to _c76 are a reception routine.

Further, in FIG. 3, 157 indicates a frequency data control means for performing frequency-related control, 158 indicates a calling operation control means for controlling the calling operation routine, and 159 indicates a frequency data control means for controlling the calling operation routine. A data output control means is shown for controlling the encoding of output data, and 160 is a data input control means for controlling the decoding of the input data when data is input.

In one embodiment of the invention, step c ₃₇ ,
Steps c ₃₇ to c ₄₀ and steps c ₅₄ to _{c 57} are executed,
Group code storage areas 109 and 110 are provided, and one of the group codes stored in the group code storage areas 109 and 110 is selected as the group code constituting the output data and is stored in the group codes 109 and 110. It will wait for the group code that is specified.

(Effects of the Invention) As explained above, according to the present invention, an empty channel can automatically be made into a communication channel. Also, the group code used during standby is not limited to the group code used when making a call, but other group codes can also be used for standby.

[Brief explanation of drawings]

FIG. 1 is a functional block diagram showing the configuration of the present invention. FIG. 2 is a block diagram showing one embodiment of the present invention. FIG. 3 is a functional block diagram for explaining the block diagram shown in FIG. 2. 4 to 6 are flowcharts for explaining the operation of one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Communication device body, 2... Transmission section, 3... Receiving section, 4... Antenna switching section, 5... Frequency synthesizer, 6... Transmission/reception switching means, 7... Microphone, 9... Output data generation Means, 10... Modulation signal switching means, 13... Speaker, 16... Calling instruction means, 17... Empty channel searching means, 20
and 22... storage means, 21, 23, 25 and 27... selection means, 24... group code comparison means, 26... group code storage means.

Claims (1)

[Claims] 1. In an amateur radio communication device equipped with a frequency synthesizer that acts as a carrier wave oscillator during transmission and as a local oscillator during reception, and a push-to-talk switch, a first storage means, and
a second storage means for storing frequency data; a group code storage means for storing a plurality of group codes; and a first selection means for selecting and holding a group code to be transmitted from among the group codes stored in the group code storage means. , output data generation means for generating output data corresponding to the group code selected and held by the first selection means and the frequency data stored in the second storage means; and one or more groups from among the group codes stored in the group code storage means. a second selection means for selecting and holding a code; a group code comparison means for detecting a match between the group code selected and held by the second selection means and a group code in the received input data; a call instruction means; an idle channel search means for searching for an idle channel in response to an output from the call instruction means; and outputting frequency data of the searched idle channel; and a frequency data output from the idle channel search means. The frequency data in the input data is supplied, and the frequency data output from the empty channel searching means is selected by the empty channel detection output of the empty channel searching means, and the frequency data in the input data is selected by the detection output of the group code comparing means. a third selection means for transferring and storing the frequency data in the second storage means; and a third selection means for selecting the frequency data stored in the first storage means for a predetermined period from the time when the idle channel detection output of the empty channel search means is generated, and after the elapse of the predetermined period. a fourth selection means which selects the frequency data stored in the second storage means and supplies the frequency data to the frequency synthesizer as output frequency setting data; Transmission/reception switching means for switching the communication device from the receiving side to the transmitting side for a predetermined period; and a modulation signal for switching the modulated signal from the microphone output to the output data of the output data generating means for the predetermined period from the time when the empty channel detection output of the empty channel search means is generated. An amateur wireless communication device, characterized in that it is equipped with a switching means.