JP3842616B2 - Personal radio - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a personal radio that can communicate with each other directly or via a relay. In this specification, the personal radio is a radio used in a two-way handheld walkie-talkie radio system (FRS), a family radio service (FRS), or a simple / specific low power. / Includes handy transceivers for business use.
[0002]
[Prior art]
A predetermined frequency band is assigned to a personal wireless device (hereinafter simply referred to as a wireless device), and mutual communication is performed by a plurality of short-distance radio engines using a frequency in this frequency band. Further, mutual communication can be performed with a radio device at a long distance via a repeater such as a repeater.
However, the configuration of a repeater in a radio device is basically different from that of a base station used in a cellular phone or a PHS phone.
[0003]
FIG. 14 is a configuration diagram of a communication system using a personal wireless device that performs mutual communication via a repeater (relay device).
In this system, wireless devices are grouped, and each wireless device belongs to one of the groups. The same tone code (group code) is assigned to each radio belonging to each group. By assigning a different tone code for each group, communication can be performed only between wireless devices having the same tone code, even in communication using the same frequency.
[0004]
In the system shown in FIG. 14, the wireless devices belong to one of three groups (A group, B group, and C group), and wireless devices A-1 and A-2 are included in A group. Radios B-1 and B-2 belong to the group, and radios C-1 and C-2 belong to the group C. The uplink frequency f _TX from each radio to the repeater is designated as 464 MHz, and the downlink frequency f _RX from each repeater to each radio is designated as 469 MHz.
The tone code is usually set by selective call signaling. As selective call signaling, CTCSS (Continuous Tone Control Squelch System), DCS (Digital Code Squelch), MSK (Minimum Shift Keying), DTMF (Dual Tone Multi-Frequency), etc. are used alone or as a combination thereof. The system uses CTCSS.
[0005]
In CTCSS, a tone signal of 300 Hz or less is superimposed on an audio signal by an encoder (E), and this signal is detected by data (D) to control squelch. As tone signals, 67 Hz is assigned to the A group, 88.5 Hz is assigned to the B group, and 100 Hz is assigned to the C group.
The radios A-1 and A-2 belonging to the A group can communicate with each other at the frequency T ₁ (f _TX , f _RX ), while the radios B-1 and B-2 belonging to the B and C groups , C-1 and C-2 cannot detect a tone signal (67 Hz), so that the speaker output is muted and communication cannot be performed.
Since the same applies to the wireless devices belonging to the B and C groups, communication can be performed only between wireless stations belonging to the same group.
[0006]
Many of such wireless devices have a beep sound function so that they can be recognized from other wireless devices. More recently, some have a vibration incoming call function in addition to the beep sound function or instead of the beep sound function.
The beep sound generation function is used for the receiver radio to recognize the beep sound transmitted from the transmitter radio and to respond. However, in places such as construction sites where the surrounding noise is large, a beep sound is difficult to recognize, and therefore, a device having a vibration incoming function is used.
[0007]
Since the vibrator built in the radio starts to vibrate when an incoming call is received from the counterpart radio, there is an advantage that the incoming call can be easily recognized.
In general, a radio is "starting a call" when it first receives a signal from another radio or when it first transmits, while receiving a signal from another radio, and It is considered as “calling” when it is transmitting, and “end of call” when a signal from another wireless device cannot be received for a certain period of time.
[0008]
Here, a conventional personal wireless device having a vibration incoming call function operates as follows when the vibration incoming call function is ON. When the tone signal is detected by the built-in signal detector, the vibrator starts to vibrate. During vibration of the vibrator, the received audio signal is not output from the speaker. This is because the audio signal is muted. When a beep sound function is provided, a different beep sound is set for each of several types of call tones.
[0009]
The audio signal is not output from the speaker even during the beep sound. At this time, if the operator starts a call by pressing any key of the radio, such as a PTT (Press to Talk) switch, or if the vibration duration set in the pre-set timer has elapsed, The vibration and beep sound are stopped, the mute is released after the stop, and the received sound is output.
Once the vibrator vibrates, it does not vibrate even if the signal is detected again unless the transmission state and the time during which the received signal cannot be detected do not exceed a certain time.
[0010]
FIG. 12 is a time chart for explaining an incoming operation of a conventional radio apparatus with a vibration incoming function.
When the transmission voice signal (A) is transmitted from the transmission-side radio at time t ₁ , the reception-side radio detects the match of the tone signal that arrives together with the transmission voice signal. ₁ starts vibration of the vibrator (B) with (radio propagation delay of the radio engine is neglected). When a key operation for a response operation such as pressing the PTT switch is performed on the receiving side, or when a preset vibration duration time has elapsed (time t ₂ ), the vibration of the vibrator is stopped.
When the vibration of the vibrator stops, the mute operation of the signal path from the receiving circuit to the speaker is stopped, and the reception sound based on the reception sound signal (C) is output from the speaker.
[0011]
Because once the vibrator as described above is vibrated (after the time t ₁₎ as long as there is no signal interruption of a predetermined time, which does not start oscillation even if detected again transmit audio signal (A), the time t _4, t _No vibration starts at ₆ .
Since the signal interruption has elapsed for a certain time after time t ₇ , the call ends at time t ₈ . Therefore, one call is from time t ₁ to time t ₈ . Then vibration detecting a transmission audio signal (A) is started at time t _9, the next call is made.
[0012]
FIG. 13 is a time chart for explaining an incoming call operation of a wireless device having both a vibration incoming call function and a beep sound generation function.
First, when the transmitting side operates a radio operation key (for example, a call key), a beep sound waveform (call tone) is transmitted, and a reception beep sound starts at time t ₀ and sounds at time t ₁ . An operation similar to that in the case of FIG.
The vibration of the vibrator starts at the time t ₀ together with the sound of the reception beep sound.
[0013]
[Problems to be solved by the invention]
In general, in a personal wireless device, when a transmitting side wants to start a call, it is normal to start a call immediately after pressing a PTT switch. In addition, in a radio having a beep sound calling function, a call key (Call Key) for transmitting a beep sound signal is pressed, and then a PTT switch is pressed to immediately start a call.
[0014]
However, as described with reference to FIGS. 12 and 13, in the case of a conventional wireless device, processing such as key operation on the reception side or vibration of the vibrator does not stop unless a certain time has elapsed, and the sound from the transmission side is heard. I couldn't.
That is, in the time period T ₁ shown in FIG. 12 or the time period T ₂ shown in FIG. 13, a state occurs in which an audio output cannot be obtained from the speaker even though the audio signal is transmitted from the transmission side. This is called a “head loss” of a call, and this “head loss” occurs at the beginning of the call for each call.
[0015]
In order to prevent this “cut-off”, it is only necessary for the transmitting side to transmit the audio signal after the receiving side stops the vibration of the vibrator. On the transmitting side, when the receiving side stops the vibration of the vibrator I don't know what I did. Therefore, it was necessary to stop transmission and wait for a response from the receiving side before starting a call.
For this reason, there has been a problem that calls cannot be started smoothly.
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a personal radio capable of eliminating a “head cut” and realizing a smooth call.
[0018]
[Means for Solving the Problems]
The first personal wireless device of the present invention includes a receiving means for receiving a signal from another wireless device via an antenna, a signal detecting means for detecting an audio signal in the received signal received by the receiving means, A tone signal detecting means for detecting a tone signal in the received signal received by the receiving means and judging a match with a tone signal set in advance in the own apparatus; and a signal from another radio by the receiving means. When the sound signal is detected by the signal detection means and the match of the tone signal is detected by the tone signal detection means, the vibrator is vibrated to notify the reception from another radio device, And a means for closing the speaker switch and outputting the audio signal from the speaker.
[0019]
A second personal wireless device of the present invention includes a receiving means for receiving a signal from another wireless device via an antenna, a signal detecting means for detecting an audio signal in the received signal received by the receiving means, A tone signal detecting means for detecting a tone signal in the received signal received by the receiving means and judging a match with a tone signal set in advance in the own apparatus; and a signal from another radio by the receiving means. When a tone signal match is detected by the tone signal detection means, the vibrator is vibrated to notify the reception from another radio, and the tone signal match and the signal detection means And a means for closing the speaker switch and outputting the sound signal from the speaker.
[0020]
Further, the present invention is characterized in that in the personal radio device described above, the tone signal is set by selective call signaling.
Furthermore, the present invention is characterized in that, in the above-described personal radio device, the selective call signaling is composed of any one of CTCSS, DCS, MSK, DTMF, or a combination thereof.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a flowchart for explaining the operation of the radio of the present invention having at least a vibration incoming function.
First, in step 100, when the vibration incoming function is set to ON by, for example, an operation key of a wireless device (not shown), a vibration start of the vibrator is permitted. Next, it is detected whether the call PTT switch is pressed (step 102). If it is pressed, the radio is in the transmission state (step 108), so the vibration of the vibrator is prohibited (step 110), the timer A that sets the vibration duration of the vibrator is reset (step 112), Return to the state of step 102.
When the PTT switch is not pressed, it is in a reception standby state (step 104), and therefore, an audio signal from another wireless device is received in this state (step 106). If there is an incoming voice signal, reception is started immediately and the voice is output to the speaker (step 114).
[0022]
Next, it is checked whether or not the vibration start of the vibrator is permitted (step 118). If permitted, the vibration is started (step 120). Once the vibration starts, it stops when a key operation is performed or the duration set in the timer A elapses. Further, after once vibrating, a process for prohibiting re-vibration is performed unless the reception signal is interrupted for a predetermined time or longer (step 122).
[0023]
Next, the timer A is reset (step 124). If no audio signal is received in step 106, the output from the speaker is not performed (step 116), and the process proceeds to step 126.
When the time set in the timer A elapses (step 126), if the vibrator vibrates, it is stopped (step 128), and processing for permitting the start of vibration is performed in preparation for the next call (step 130). .
[0024]
FIG. 6 is a block diagram showing an example of the configuration of the receiving unit of the wireless device according to the present invention.
A reception signal received via the ANnate 10 is detected by the reception circuit 20 including the RF circuit 22, the IF circuit 24 and the AF circuit 26, and is output to the speaker 48 via the speaker switch 46.
[0025]
Here, the received signal includes tone signals such as an audio signal, a carrier wave signal, and CTCSS. The circuit shown in FIG. 6 is configured to detect an audio signal in the received signal by a signal detector. When the audio signal is detected, the CPU 40 closes the speaker switch 46 and also closes the vibrator switch 42 to start the vibration of the vibrator. Once started, the vibration of the vibrator stops when a certain time set in a timer (not shown) elapses, but also stops when the PTT switch 50 is pressed.
As described above, in the circuit of FIG. 6, since the audio signal transmitted from the other radio device is detected and the audio signal is received and the vibrator is vibrated, the received audio signal is “cut off”. There is nothing.
[0026]
In FIG. 7, the carrier wave signal and tone signal in the received signal are detected simultaneously, and the speaker switch 46 and the vibrator switch 42 are controlled simultaneously. The carrier detector 32 detects whether there is a carrier wave at the currently used frequency and transmits it to the CPU 40.
The CTCSS / DCS detector 34 detects whether or not a tone signal such as CTCSS or DCS is present in the received signal, and if it is present, matches the tone code set in advance. Transmit to. Therefore, in the case of the circuit of FIG. 7, the vibrator 44 vibrates and the sound output is obtained from the speaker 48 only when the sound signal and the tone signal having the matching tone code are detected at the same time.
In the above-described embodiment, the wireless device does not have a beep sound function for calling the other party, but the present invention can also be applied to a wireless device that has a beep sound function.
[0027]
FIG. 8 is a block diagram illustrating a configuration of a transmission unit of a wireless device having a function of transmitting a beep sound (or call tone).
In order to transmit a beep sound from the transmission unit of the wireless device shown in FIG. 8 to the counterpart wireless device, the call key 72 is pressed. Then, the CPU 70 supplies power to the transmission circuit 60, turns off the microphone switch, turns on the call tone switch, activates the call tone generation circuit 84, and generates a beep sound signal in the voice band. Since the CPU 70 closes the call tone switch 78, the beep sound signal generated by the call tone generation circuit 84 is transmitted to the transmission circuit 60 and transmitted from the antenna 10. The transmission circuit 60 includes a modulation circuit 66, a VCO 64, and an RF amplifier 62.
[0028]
Next, when the PTT switch 74 is pressed, the CPU supplies power to the transmission circuit 60, turns on the microphone switch 80, and turns off the call tone switch.
Thereby, the sound from the microphone 82 can be transmitted. At this time, in the receiving unit of the counterpart wireless device, the vibrator vibrates with the sound of the beep sound, and an audio signal is output at the same time.
[0029]
2 to 5 are time charts for explaining the incoming operation of the radio device with a vibration incoming function according to the present invention.
FIG. 2 shows the operation in the case of a wireless device having only a vibration incoming function.
When the transmission audio signal (A) is transmitted from the transmission side radio at time t ₁ , the reception side radio detects the tone signal or the transmission audio signal, and starts vibration (B) of the vibrator at time t _1. To do. Or the key operation for a response operation such as pressing the PTT switch is performed on the receiving side, or the pre beforehand set vibration continuation time has elapsed, at time t ₂ the vibration of the vibrator is stopped. Unlike the conventional wireless device, the receiving circuit operates simultaneously with the vibration of the vibrator, and the received sound based on the received sound signal (c) is output from the speaker from time t ₁ .
Therefore, the problem of “cutting the head” does not occur. Time t ₃ subsequent operation is the same as the operation of the conventional radio machine shown in FIG. 12.
[0030]
FIG. 3 is a time chart for explaining the incoming call operation of the radio of the present invention having both the vibration incoming call function and the beep sound function.
The operation similar to that in FIG. 2 is performed except that the beep sound of the reception beep is started at time t _{0 and the} sound is stopped at time t ₁ . It should be noted that the vibration of the vibrator is started at the time t ₀ together with the sound of the reception beep sound.
[0031]
FIG. 4 is a time chart for explaining the operation of the radio of the present invention having a vibration incoming function that operates only when receiving radio waves with matching tone codes.
The vibration of the vibrator is started at time t ₁ simultaneously with the arrival of the tone signal (G) having the same tone code as that of the voice signal (A) transmitted from another radio, and the time t is passed by a predetermined time or a predetermined key operation. Stop vibration at ₂ . The receiving circuit operates simultaneously with the vibration of the vibrator, and the received sound based on the received sound signal (C) is output from the speaker from time t ₁ .
[0032]
FIG. 5 is a time chart for explaining an incoming call operation in the case where the wireless device of FIG. 4 further has a beep sounding function.
At time t ₀ , the vibrator starts to vibrate simultaneously with the arrival of the tone signal that matches the beep sound signal and tone code transmitted from the other wireless device. At time t ₁ , when both a voice signal transmitted from another wireless device and a tone signal having a matching tone code arrive, a received voice based on the received voice signal (C) is output from the speaker. In any of the cases shown in FIGS. 3 to 5, the problem of “head loss” of the received voice does not occur.
[0033]
The present invention can also be applied in combination with a vibration incoming call function even in a wireless device having an individual call function using MSK or DTMF as a tone signal. The transmitting side uses MSK or DTMF to call individual IDs (after selecting a calling party) using an operation key (not shown), and performs transmission. The receiving side can listen to the received voice only when it is called (when it matches the self ID), or it can listen to all the received voice. And only the called counterpart's radio vibrates the vibrator.
[0034]
FIG. 9 is a block diagram showing a configuration of a transmission unit of a radio having the above-described function. The same parts as those in the circuit configuration shown in FIG. 8 are denoted by the same reference numerals, and detailed description thereof is omitted. In the circuit of FIG. 9, an MSK generation circuit 76 is provided instead of the call tone generation circuit 84 in the circuit of FIG. In addition, the memory 71 in the CPU 70 stores the IDs of the called radios A and B together with the ID of the local station in advance. When the PTT switch 74 is pressed, the CPU 70 turns on the transmission circuit 60, turns off the microphone switch, turns on the MSK switch 78, and outputs the ID of the partner station. When the output of the MSK from the MSK generation circuit 76 is completed, the MSK switch 78 is turned off and the microphone switch 80 is turned on. Here, when the wireless device A is selected by the selection switch 72, the wireless device A hears the received voice and vibrates the vibrator.
[0035]
On the other hand, in the radio B that is not selected, although the received voice can be heard, the vibrator does not vibrate.
Note that the ID of the partner station stored in the memory 71 can be rewritten using an external device such as a personal computer.
[0036]
FIG. 10 is a block diagram showing the configuration of the receiving unit of the radio on the other side of the radio shown in FIG. The same parts as those in the circuit shown in FIG.
Instead of the DTCSS / DCS detector 34 in FIG. 7, an MSK detector 36 is provided. The MSK signal sent from the counterpart radio is decoded by the MSK detector 36 and sent to the CPU 40. The MSK signal is composed of a bit string of “1” or “0”, and the CPU 40 of the wireless device A and the wireless device B compares the bit string from the MSK detector with its own station ID in the memory 41 of the CPU 40.
[0037]
When the received signal matches the own code, the CPU 40 turns on the vibrator switch 42 to vibrate the vibrator 44.
On the other hand, the speakers of the radios A and B are controlled by signals from the carrier detector, and the signals from the MSK detector do not affect the speaker output. Thus, the vibrator vibrates only when the receiving side is called by MSK or DTMF. Since the speaker is turned on / off independently of MSK and DTMF, it is possible to know that the local station has been called while monitoring all calls. Also, when the local station is called, a beep sound is not generated and a voice can be output immediately, so that the transmitting side can start a conversation without waiting for a response from the receiving side.
[0038]
It should be noted that the present invention can be mixed with the conventional operation of not outputting sound until the vibrator is stopped by adding a command to the MSK signal. FIG. 11 is a flowchart for explaining such an embodiment. FIG. 11A shows a procedure on the transmission side, and FIG. 11B shows a procedure on the reception side.
When the PTT switch is pressed on the transmission side (radio device A) (step 200), the command "A" and the partner station ID are transmitted (step 202). After the MSK transmission is completed, the sound from the microphone is continuously transmitted until the PTT switch is released (steps 204 and 206).
[0039]
On the other hand, when the call key switch is pressed (step 201), the command "B" and the partner station ID are transmitted (step 203). Thereafter, steps 205 and 207 similar to steps 204 and 206 are executed. As a result, the operations of the present invention are executed in steps 200, 202, 204, and 206, and the conventional operations are executed in steps 201, 203, 205, and 207. On the receiving side, after the local station is called (step 300), the received command is determined (step 302). When the command “A” is detected, the vibrator is vibrated (step 304) and at the same time the received sound is output to the speaker (step 306). Thereby, the operation of the present invention is executed.
[0040]
When the command “B” is detected, the vibrator is vibrated (step 301), and at the same time, a beep sound is generated (step 303).
Then, the output of the received voice is started after the vibration and the beep sound are stopped (step 305). Thereby, the conventional operation is executed.
In this way, by mixing the operation of the present invention and the conventional operation, it is possible to perform an ad hoc transmission process according to the situation of the receiving user.
That is, when the receiving user is at a work site where noise is intense, it is better to execute the conventional operation.
[0041]
【The invention's effect】
As described above, in the wireless device of the present invention, when a signal is received, a vibrator signal starts at the same time as an incoming call and a sound is output. Moreover, the transmission side can start a conversation immediately without waiting for the other party's response.
Therefore, a smooth call can be realized.
[Brief description of the drawings]
FIG. 1 is a flowchart for explaining the operation of a wireless device of the present invention having at least a vibration incoming function.
FIG. 2 is a time chart for explaining an incoming operation of a radio device with a vibration incoming function according to the present invention.
FIG. 3 is a time chart for explaining an incoming operation of a radio device with a vibration incoming function according to the present invention.
FIG. 4 is a time chart for explaining an incoming operation of a radio device with a vibration incoming function according to the present invention.
FIG. 5 is a time chart for explaining an incoming call operation in a case where the radio apparatus with a vibration incoming call function according to the present invention further has a beep sounding function.
FIG. 6 is a block diagram showing an example of a configuration of a receiving unit of a radio device according to the present invention.
FIG. 7 is a block diagram showing an example of a configuration of a receiving unit of a radio device according to the present invention.
FIG. 8 is a block diagram showing a configuration of a transmission unit of a radio device according to the present invention.
FIG. 9 is a block diagram showing a configuration of a transmission unit of a radio device according to the present invention.
FIG. 10 is a block diagram showing a configuration of a receiving unit of a radio on the other side of the radio according to the present invention.
FIG. 11 is a flowchart for explaining an embodiment of the present invention, in which (A) shows a procedure on the transmitting side and (B) shows a procedure on the receiving side;
FIG. 12 is a time chart for explaining an incoming operation of a conventional wireless device with a vibration incoming function.
FIG. 13 is a time chart for explaining an incoming operation of a radio device having both a conventional vibration incoming function and a beep sound function.
FIG. 14 is a configuration diagram of a communication system using a personal wireless device that performs mutual communication via a repeater (relay device).
[Explanation of symbols]
20 receiving circuit 30 signal detector 32 carrier detector 34 CTCSS / DCS detector 40 CPU
42 Vibrator switch 44 Vibrator 46 Speaker switch 48 Speaker 70 CPU
72 Call key 74 PTT switch 76 generator circuit 78 MSK switch 80 microphone switch 82 microphone 84 call tone generator circuit

Claims (4)

Receiving means for receiving signals from other radios via an antenna;
Signal detection means for detecting an audio signal in the received signal received by the receiving means;
A tone signal detecting means for detecting a tone signal in the received signal received by the receiving means, and determining a match with a tone signal set in advance in the own device;
When the signal from the other radio is received by the receiving means and the sound signal is detected by the signal detecting means and the coincidence of the tone signal is detected by the tone signal detecting means, the vibrator is vibrated and other signals are detected. And a means for closing the speaker switch and outputting the audio signal from the speaker. Receiving means for receiving signals from other radios via an antenna;
Signal detection means for detecting an audio signal in the received signal received by the receiving means;
A tone signal detecting means for detecting a tone signal in the received signal received by the receiving means, and determining a match with a tone signal set in advance in the own device;
When a signal from another radio is received by the receiving means, if a match of the tone signal is detected by the tone signal detecting means, the vibrator is vibrated to notify the reception from the other radio, and the tone signal And a means for closing the speaker switch and outputting the audio signal from the speaker when an audio signal is detected by the signal detecting means. In the personal radio according to claim 1 or 2 ,
The personal radio set, wherein the tone signal is set by selective call signaling. The personal wireless device according to claim 3 ,
The personal radio apparatus, wherein the selective call signaling is any one of CTCSS, DCS, MSK, DTMF, or a combination thereof.

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