JP2010154436A - Radio unit, radio communication system, and radio communication method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technology which improves user's operability when controlling a sound volume of a sound outputted by a radio unit at a reception side from a radio unit at a transmission side. <P>SOLUTION: The radio includes: a transmitting section 16 for performing radio transmission; a RAM 10A in which sound volume data for instructing a sound volume to be reproduced in the other party radio unit have been stored beforehand; a microphone 13 for supplying a sound signal according to an input sound; a PTT 12 for instructing the operation of the start of transmission; and a control section 10 for reading the sound volume data from the RAM 10A when the PTT 12 instructs the start of transmission, and transmitting the read sound volume data to the transmitting section 16 together with the sound signal. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a radio, a radio communication system, and a radio communication method.

  2. Description of the Related Art In recent years, techniques related to control of a wireless device that performs wireless communication are known. For example, a technique is known in which the volume of audio output from a receiving-side radio is controlled from a transmitting-side radio (see, for example, Patent Document 1).

In Patent Document 1, a user of a transmitting-side radio device first manually inputs volume data. Then, PTT (press talk switch) is pressed, and sound is input to the microphone in a state where PTT is pressed. Then, the volume data manually input and the sound input to the microphone are transmitted to the radio device on the receiving side. The receiving-side radio receives the volume data and the sound, and outputs (reproduces) the sound based on the received sound data.
Japanese Patent Laid-Open No. 10-093463

  However, in the technique of Patent Document 1, the user of the transmitting-side radio device must manually set the volume data that the user of the receiving-side radio device wants to hear before starting transmission of the volume data. . For this reason, the operator of the transmitter on the transmitting side has been troublesome.

An object of the present invention is to realize a technique for improving user operability when controlling the volume of sound output from a receiving-side radio device from a transmitting-side radio device.

In order to solve the above-described problem, the wireless device of the invention according to claim 1 is:
In a radio that communicates wirelessly with a counterpart radio,
A transmitter that performs wireless transmission;
A storage unit in which volume data for instructing a volume to be played by the counterpart wireless device is stored in advance;
A microphone for supplying an audio signal corresponding to the input audio;
An instruction operation unit for instructing to start transmission;
When there is an instruction to start transmission by the instruction operation unit, the controller reads out the volume data from the storage unit, and causes the transmitter to transmit the read volume data together with the audio signal;
It is characterized by providing.

According to a second aspect of the present invention, in the wireless device according to the first aspect,
A receiving unit that receives a radio signal transmitted from a counterpart radio, a demodulating unit that demodulates the radio signal, and a speaker that reproduces an audio signal included in the demodulated signal,
When the demodulated signal includes volume data, the control unit adjusts a reproduction volume from the speaker based on the volume data.

A wireless communication system according to a third aspect of the present invention provides:
A wireless device according to claim 1;
A receiving radio that receives a radio signal transmitted from the radio, and
The receiving radio is
A receiver for receiving a radio signal transmitted from the transmitter;
A demodulator that demodulates the radio signal;
A speaker for reproducing an audio signal included in the demodulated signal demodulated by the demodulator;
When the demodulated signal includes volume data, a volume control unit that adjusts the playback volume from the speaker based on the volume data;
It is characterized by providing.

According to a fourth aspect of the present invention, there is provided a wireless communication method.
In the wireless communication method of the wireless device that wirelessly communicates with the counterpart wireless device,
A step in which the transmitter performs wireless transmission;
A step of storing in advance volume data instructing a volume to be played by the counterpart wireless device;
A microphone supplying an audio signal corresponding to the input audio;
The instruction operation unit accepts a transmission start instruction operation;
When the control unit is instructed to start transmission by the instruction operation unit, reading the volume data from the storage unit, and causing the transmitter to transmit the read volume data together with the audio signal;
It is characterized by including.

ADVANTAGE OF THE INVENTION According to this invention, when controlling the sound volume output with the radio | wireless machine of a receiving side from the radio | wireless machine of a transmission side, the technique which improves a user's operativity is realizable.

  Embodiments according to the present invention will be described below in detail with reference to the accompanying drawings. However, the scope of the invention is not limited to the illustrated examples.

  Embodiments according to the present invention will be described with reference to FIGS. FIG. 1 shows a schematic configuration of radio communication system 100 according to the present embodiment. The wireless communication system 100 includes wireless devices 1A and 1B. The wireless devices 1A and 1B perform wireless communication with each other.

  Next, with reference to FIG. 2, the internal configuration of the radio devices 1A and 1B will be described. The internal configurations of the wireless devices 1A and 1B are the same. Hereinafter, the wireless device 1A will be described as a representative. The radio 1A has a function of transmitting voice and volume data as radio signals to the counterpart radio (radio 1B) and receives radio signals transmitted from the counterpart radio (radio 1B). It demonstrates as what has a function.

  As shown in FIG. 2, the wireless device 1A includes a control unit 10, a display unit 11, a PTT 12 as an instruction operation unit, a microphone 13, a modulation unit 14, an amplification unit 15, a transmission unit 16, and a reception. The unit 17, the demodulator 18, the amplifier 19, the speaker 20, and the antenna ANT are configured.

  The control unit 10 controls each unit of the wireless device 1A. The control unit 10 includes a CPU (Central Processing Unit), a ROM (Read Only Memory) (all not shown), a RAM (Random Access Memory) 10A as a storage unit, and the like, and controls each unit of the wireless device 1A. In the control unit 10, a program stored in the ROM is expanded in the RAM 10A, and various processes are executed in cooperation with the program expanded in the RAM 10A and the CPU.

  Specifically, the control unit 10 reads the volume data from the RAM 10A when the PTT 12 is instructed to start transmission in cooperation with a transmission program described later, and transmits the read volume data together with the audio signal to the transmission unit 16. To send to. In addition, in the case where the demodulated signal obtained by demodulating the radio signal received from the wireless device 1B includes volume data in cooperation with a reception program to be described later, the control unit 10 receives the volume from the speaker 20 based on the volume data. Adjust the playback volume.

  The RAM 10A is a volatile memory. The RAM 10A has a work area for storing various programs to be executed and data related to these various programs. The RAM 10A stores in advance volume data indicating the volume to be reproduced by the wireless device 1B. The volume data stored in the RAM 10A (volume data stored in advance) is volume data sufficient to listen to the sound output from the wireless device 1B.

  Here, the volume data stored in advance is set (stored) according to the situation. For example, the time zone (for example, daytime or midnight) in which the wireless device 1B is used, the location (for example, school classroom or factory), the genre of the wireless devices 1A and 1B (for example, portable wireless devices or in-vehicle devices) Volume data is set according to the maximum output volume of the speaker 20 or the like. The setting of the volume data is programmed using software (for example, software for writing a set frequency (transmission frequency) or the like to the wireless device). At this time, when the user himself / herself sets the volume data, a menu screen for setting is displayed on the display unit 11, and the volume data is set according to the menu screen. Also, by setting using software, once the volume data is set, the trouble of setting the volume data every time can be saved.

  The display unit 11 is configured by a liquid crystal display panel or the like, and displays various information input from the CPU.

The PTT 12 receives a transmission start instruction operation. Specifically, when receiving a transmission start instruction operation from the user, the PTT 12 outputs a transmission start instruction signal to the control unit 10.
The microphone 13 supplies an audio signal corresponding to the input audio to the modulation unit 14. Specifically, when input sound is input to the microphone 13 while the PTT 12 is pressed by the user, the microphone 13 supplies sound (sound signal) corresponding to the input sound to the modulation unit 14. To do.

  The modulation unit 14 superimposes the volume data and the sound stored in the RAM 10A (generates a superimposed signal of the volume data and the sound), and generates a modulation signal obtained by modulating the superimposed signal to a predetermined frequency. Then, the modulation unit 14 outputs the modulation signal to the amplification unit 15.

  The amplification unit 15 generates an amplified signal obtained by amplifying the modulation signal, and outputs the generated amplified signal to the transmission unit 16. The transmission unit 16 transmits the amplified signal as a radio signal to the radio 1B via the antenna ANT.

  The receiving unit 17 receives a wireless signal transmitted from the wireless device 1B via the antenna ANT. Then, the reception unit 17 outputs the received radio signal to the demodulation unit 18. The demodulator 18 generates a demodulated signal obtained by demodulating the radio signal. Then, the demodulator 18 outputs the audio signal (audio) included in the demodulated signal to the amplifier 19 and outputs the volume signal (volume data) included in the demodulated signal to the controller 10.

  The amplification unit 19 amplifies the input voice based on an instruction from the control unit 10. Specifically, the input sound is amplified (adjustment of the amount of sound amplification) based on the volume data instruction from the control unit 10. The amplifying unit 19 outputs the amplified sound to the speaker 20. The speaker 20 reproduces (outputs) the input sound.

  In addition, the modulation unit 14 and the demodulation unit 18 are MSK (Minimum Shift Keying), CTCSS (Continuous Tone Controlled Squelch System), DCS (Digital Code Squelch), DTMF (Dual Tone Multiple Frequency), 2-TONE, 5-TONE. Various signaling schemes are applied.

  Next, the operation of the wireless device 1A will be described. First, with reference to FIG. 3A, transmission processing executed in the wireless device 1A will be described. The transmission process is a process of transmitting a radio signal to the wireless device 1B.

  For example, when the PTT 12 is pressed by the user as a trigger, the transmission process is executed in cooperation with the transmission program read from the ROM and appropriately expanded in the RAM 10A and the CPU.

  First, a call is started (step S1). Specifically, in a state where the PTT 12 is pressed, a call is started when an input voice is input to the microphone 13. Then, the volume data is read from the RAM 10A, and the read volume data and sound are transmitted as radio signals (step S2). Specifically, the modulation unit 14 generates a modulation signal obtained by modulating the volume data and the superimposed audio signal to a predetermined frequency. Then, an amplification signal obtained by amplifying the modulation signal is generated by the amplification unit 15. Then, the amplified signal is transmitted as a radio signal by the transmitter 16. After execution of step S2, the transmission process is terminated.

  Next, a reception process executed by the wireless device 1A will be described. The reception process is a process of adjusting the reproduction volume from the speaker 20 based on the volume data when the volume data is included in the demodulated signal obtained by demodulating the radio signal received from the wireless device 1B.

  For example, triggered by the start of reception of a radio signal including volume data and sound transmitted from the wireless device 1B, it is received in cooperation with the reception program read from the ROM and appropriately expanded in the RAM 10A, and the CPU. Processing is executed.

  First, a radio signal including volume data and sound transmitted from the radio device 1B is received (step S3). Then, the volume is increased based on the volume data (step S4). Specifically, first, the demodulator 18 generates a demodulated signal obtained by demodulating the radio signal received in step S3. Then, the demodulator 18 outputs the volume data to the controller 10 and the sound is output to the amplifier 19. Then, according to an instruction from the control unit 10, the volume (amplification amount of sound) of the amplification unit 19 is increased (adjusted) based on the volume data. After execution of step S4, the amplified sound is output from the speaker 20 (step S5). After the execution of step S5, the reception process is terminated.

  As described above, according to the present embodiment, when an instruction to start transmission is given by the PTT 12, the volume data stored in advance is read from the RAM 10A, and the read volume data is transmitted to the transmitter 16 together with the audio signal. For this reason, when the user of the wireless device 1A transmits the sound and volume data to the counterpart wireless device (wireless device 1B), the sound volume data output by the counterpart wireless device (wireless device 1B) is manually input. There is no need to set. Therefore, the user operability can be improved when the volume of the sound output from the reception-side wireless device is controlled from the transmission-side wireless device.

  In addition, when the wireless device 1A receives a wireless signal from the counterpart wireless device (wireless device 1B) and the demodulated signal obtained by demodulating the received wireless signal includes volume data, the speaker 20 is based on the volume data. The playback volume from can be adjusted.

  Further, since the volume data stored in advance in the RAM 10A can be converted into volume data that can be viewed with the wireless device 1B, the user of the wireless device 1A can surely listen to the sound with the counterpart wireless device (wireless device 1B). You don't have to worry about it.

  In addition, since modulation / demodulation is performed without being limited to a specific signaling method (modulation / demodulation method), the degree of freedom in circuit configuration and setting can be improved.

  Note that the descriptions in the above embodiments are examples of the wireless device, the wireless communication system, and the wireless communication method according to the present invention, and the present invention is not limited thereto.

  For example, in the above-described embodiment, the wireless device 1A has a function (transmission function) for transmitting voice and volume data as a wireless signal to the counterpart wireless device (wireless device 1B), and the counterpart wireless device ( Although described as having a function (reception function) for receiving a radio signal transmitted from the radio 1B), the present invention is not limited to this. For example, the wireless device 1A may have a transmission function only, and the wireless device 1B may have a reception function only. In this case, the wireless device 1B functions as a receiving wireless device, and the control unit 10 of the wireless device 1B functions as a volume adjusting unit.

  Further, for example, in the above-described embodiment, the wireless device 1A transmits the volume data stored in advance in the RAM 10A, but the present invention is not limited to this. For example, a control signal for turning ON / OFF the power of the counterpart wireless device (wireless device 1B) may be transmitted from the wireless device 1A. In this case, when the radio 1B is turned off, the radio 1B can be forcibly turned on by transmitting a signal for forcibly turning on the radio 1B from the radio 1A.

  Further, for example, in the above-described embodiment, the voice is input to the microphone 13 while the PTT 12 is pressed, and the volume data and the voice input to the microphone 13 are transmitted to the radio device on the receiving side. Alternatively, a VOX function may be used in which the transmission switch is turned on when the transmitting side radio device detects the sound from the microphone 13 and switched to the transmission mode, and the mode is switched to the reception mode when no sound is emitted for a certain period of time.

  Further, for example, the volume data may be transmitted only during an emergency mode in which an emergency signal is notified to another wireless device by an operation of a user (user) in an emergency.

  Further, in the above embodiment, only one volume data is set (stored), but two or more volume data may be set. For example, the time is detected and the time zone such as daytime or night is detected. A configuration may be adopted in which optimum volume data is automatically set and the set volume data is transmitted. Specifically, for example, a configuration may be adopted in which larger volume data is set during the day and smaller volume data is set during the night. Thereby, the sound volume suitable for the situation can be transmitted.

  In addition, the detailed configuration and detailed operation of the radio devices 1A and 1B in the above embodiment can be changed as appropriate without departing from the spirit of the present invention.

It is a figure which shows schematic structure figure of the radio | wireless communications system which concerns on this invention. It is a figure which shows the internal structure of a radio | wireless machine. It is a flowchart which shows the flow of a transmission process and a reception process.

Explanation of symbols

100 wireless communication system 1A, 1B wireless device 10 control unit 10A RAM
11 Display 12 PTT
13 Microphone 14 Modulation unit 15 Amplification unit 16 Transmission unit 17 Reception unit 18 Demodulation unit 19 Amplification unit 20 Speaker ANT Antenna

Claims (4)

In a radio that communicates wirelessly with a counterpart radio,
A transmitter that performs wireless transmission;
A storage unit in which volume data for instructing a volume to be played by the counterpart wireless device is stored in advance;
A microphone for supplying an audio signal corresponding to the input audio;
An instruction operation unit for instructing to start transmission;
When there is an instruction to start transmission by the instruction operation unit, the controller reads out the volume data from the storage unit, and causes the transmitter to transmit the read volume data together with the audio signal;
A wireless device comprising: A receiving unit that receives a radio signal transmitted from a counterpart radio, a demodulating unit that demodulates the radio signal, and a speaker that reproduces an audio signal included in the demodulated signal,
2. The wireless device according to claim 1, wherein when the demodulated signal includes volume data, the control unit adjusts a reproduction volume from the speaker based on the volume data. A wireless device according to claim 1;
A receiving radio that receives a radio signal transmitted from the radio, and
The receiving radio is
A receiver for receiving a radio signal transmitted from the transmitter;
A demodulator that demodulates the radio signal;
A speaker for reproducing an audio signal included in the demodulated signal demodulated by the demodulator;
When the demodulated signal includes volume data, a volume control unit that adjusts the playback volume from the speaker based on the volume data;
A wireless communication system comprising: In the wireless communication method of the wireless device that wirelessly communicates with the counterpart wireless device,
A step in which the transmitter performs wireless transmission;
A step of storing in advance volume data instructing a volume to be played by the counterpart wireless device;
A microphone that supplies an audio signal corresponding to the input sound; and
An instruction operation unit for instructing to start transmission;
The instruction operation unit accepts a transmission start instruction operation;
When the control unit is instructed to start transmission by the instruction operation unit, reading the volume data from the storage unit, and causing the transmitter to transmit the read volume data together with the audio signal;
A wireless communication method comprising:

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