JP2012015707A - Radio device and computer program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable recognition of that a packet addressed to the self station is received with ease while listening the communication voice, by a tone color of a beep sound, in a radio device for amateur radio.SOLUTION: A radio device 1 has: a controller 21 that extracts information related to a call sign from a header part of a packet, and analyzes a content of the information; and a beep signal generator 26 that generates a plurality of voice signals corresponding to a plurality of beep sounds with different tone colors. The controller 21 detects a clearing frame of a packet, then selects a beep sound corresponding to an identifier, which is extracted from the header part of the packet, from data indicating a relation between the identifier and the plurality of beep sounds, which is preliminarily stored in a memory, and instructs the beep signal generator 26 to generate a voice signal corresponding to the selected beep sound.

Description

  The present invention relates to a radio apparatus employing digital voice communication and a computer program for realizing the function of the radio apparatus.

  In recent years, for example, in the world of amateur radio, digitization and networking of voice communication are becoming widespread in order to realize higher speed communication and enjoy communication with clear voice. In amateur radio digital voice communication, a voice signal is encoded, converted into a digital signal, packetized, and transmitted.

  And since voice signals are packetized and data indicating the destination, source call sign, etc. are added to the header of the packet, many functions that could not be achieved with analog voice communication can be realized. It was.

  One of the functions realized along with amateur radio digital voice communication is “call sign squelch” (see Non-Patent Document 1, for example). This function reproduces sound only when a packet addressed to the own station is received, and does not reproduce sound by muting when a packet not specifying a transmission destination or a packet addressed to another station is received.

  In the above-mentioned “call sign squelch”, when a packet addressed to the own station is received, it is possible to know that the own station has been called by a beep sound and a display on the display together with a communication voice.

  Another function is “standby beep” (see, for example, Patent Document 1). “Standby beep” is to notify that the transmission source has entered the standby state by making a beep when the receiving end confirms the end frame added to the last part of the packet. Normally, the end frame is added to the packet when the transmission source user turns off the PTT switch.

JP 2006-186816 A

Icom Co., Ltd. transceiver ID-92 manual (page 96)

  When the above-mentioned “call sign squelch” is used, it is a convenient function for a user who does not want to hear the voice of communication between stations not related to the own station because the voice other than the address for the own station cannot be heard. On the other hand, users who want to participate in the communication if there is an opportunity while listening to the voice of the communication exchanged between stations cannot confirm the content of the communication, so the opportunity to participate in the communication is lost. become.

  The present invention has been made in view of the above-described problems. By utilizing a beep sound, a wireless device that can easily recognize a packet addressed to the local station while listening to a communication voice is received. The purpose is to provide.

In order to achieve the above object, a radio apparatus according to the present invention demodulates a received radio signal to reproduce a packet, and decodes and D / A converts an audio signal included in the packet to reproduce an analog audio signal. A radio,
A controller that extracts information on an identifier for identifying a transmission destination from the header portion of the packet, and analyzes the content;
A beep signal generator for generating a plurality of sound signals corresponding to a plurality of beep sounds having different timbres,
After the controller detects the end frame included in the data portion of the packet,
A beep sound corresponding to the identifier extracted from the header portion of the packet is selected from data indicating the relationship between the identifier and the plurality of beep sounds stored in advance in memory;
The beep signal generator is instructed to generate an audio signal corresponding to the selected beep sound.

  Here, it is preferable that a tone color of the beep sound is different depending on whether the identifier indicates the own station or not.

The controller includes at least a CPU, a ROM, and a RAM, and a program for realizing the function of the beep signal generator is stored in the ROM.
The program read from the ROM may be executed by the CPU.

A computer program according to the present invention includes a computer,
A controller that extracts the identifier for identifying the transmission destination from the header part of the packet including the audio signal that has been A / D converted and encoded, and a controller that analyzes the information, and a plurality of beeps that correspond to a plurality of beeps with different tones A computer program that functions as a beep signal generator for generating an audio signal,
After the controller detects the end frame included in the data portion of the packet,
A beep sound corresponding to the identifier extracted from the header portion of the packet is selected from data indicating the relationship between the identifier and the plurality of beep sounds stored in advance in memory;
The beep signal generator is instructed to generate an audio signal corresponding to the selected beep sound.

  With the wireless device of the present invention, it is possible to easily recognize that the packet addressed to the own station has been received by the tone of the beep sound while listening to the voice of communication exchanged between the stations. As a result, there is a request from a user who wants to know that a packet addressed to his / her station has been received and a request from a user who wants to participate in the communication if there is an opportunity while listening to the voice of the communication between stations. , Both can come true.

It is a block diagram which shows the structure of the radio | wireless machine concerning embodiment of this invention. It is a figure which shows the fundamental structure of the amateur radio | wireless system which employ | adopted digital voice communication. It is a figure which shows the structure of the packet transmitted with a radio | wireless machine. It is a figure which shows an example of the table showing the relationship between the flag and call sign contained in the header part of a packet, the display content of a display part, and a beep sound. It is a flowchart which shows the procedure at the time of changing the tone of a beep sound according to the content of the header part of a packet. It is a figure which shows the other example of the table showing the relationship between the flag and call sign contained in the header part of a packet, the display content of a display part, and a beep sound.

  Hereinafter, a wireless device according to an embodiment of the present invention will be described with reference to the drawings.

<Configuration of radio>
FIG. 1 shows a configuration of a wireless device according to the present embodiment that employs digital voice communication. The wireless device 1 includes a microphone 11, a speaker 12, an AF amplifier 13, an audio codec 14, a transmission unit 15, a transmission / reception switching unit 16, an antenna 17, a reception unit 18, an interface unit 19, a controller 21, a beep signal generator 26, and an operation unit. 27 and a display unit 29. In the figure, thick arrows indicate the flow of audio signals and data, and thin arrows indicate the flow of signals in the control system.

  The microphone 11 receives the sound for transmission as an input, generates an analog sound signal, and outputs the sound signal to the AF amplifier 13. On the other hand, the speaker 12 converts the analog audio signal output from the AF amplifier 13 into audio.

  The AF (Audio Frequency) amplifier 13 amplifies the analog audio signal input from the microphone 11 and supplies it to the audio codec 14. In addition, the analog audio signal of the received audio supplied from the audio codec 14 and the beep signal output from the beep signal generator 26 are amplified and output to the speaker 12.

  The audio codec 14 performs A / D (analog / digital) conversion and encoding on the analog audio signal supplied from the AF amplifier 13 and outputs the result to the transmission unit 15. The audio codec 14 decodes the digital audio signal supplied from the receiving unit 18, further D / A (digital / analog) converts it, and then outputs it to the AF amplifier 13.

  The transmission unit 15 attaches a wireless communication header to the digital audio signal supplied from the audio codec 14 and divides the digital audio signal based on an output of a PTT switch 28 described later to generate a transmission packet shown in FIG. The transmission unit 15 further modulates a carrier wave with digital data constituting the packet, performs frequency conversion as necessary, and transmits the result from the antenna 17 via the transmission / reception switching unit 16. The packet configuration will be described later in detail with reference to FIG.

  The transmission / reception switching unit 16 guides the transmission signal from the transmission unit 15 to the antenna 17 when the PTT switch 28 is pressed and turns on, and guides the reception signal of the antenna 17 to the reception unit 18 when the PTT switch 28 is released and turns off. .

  The receiving unit 18 switches the reception frequency in accordance with an instruction from the controller 21, tunes to the reception frequency and amplifies it, further demodulates the reception signal, and reproduces the packet. Then, the header part is removed from the reproduced packet, the audio data is supplied to the audio codec 14, and the other data (for example, a packet conforming to Ethernet [registered trademark]) is supplied to the interface unit 19.

  The interface unit 19 is connected to the external connection terminal 20 and supplies a packet supplied from an external device (such as a GPS receiver) to the transmission unit 15. Further, the interface unit 19 supplies an Ethernet [registered trademark] -compliant packet supplied from the receiving unit 18 to an external device (such as a personal computer) via the external connection terminal 20.

  The controller 21 controls the operation of the wireless device 1. The controller 21 includes a CPU (Central Processing Unit) 22, a ROM (Read Only Memory) 23 that stores a program that defines the operation of the CPU 22, a RAM (Random Access Memory) 24 that functions as a work memory for the CPU 22, and a call of its own station. A non-volatile memory 25 storing signatures and the like is provided.

  The beep signal generator 26 generates audio signals of different timbres according to instructions from the CPU 22 and outputs them to the AF amplifier 13.

  A program for generating an audio signal is stored in the ROM 23 of the controller 21 in advance, and the program read from the ROM 23 is executed by the CPU 22 so that the same function as the beep signal generator 26 is realized. May be. With such a configuration, it is not necessary to separately provide the beep signal generator 26, so that the cost of the radio can be reduced.

  The operation unit 27 inputs various inputs and instructions to the controller 21. The operation unit 27 includes a PTT (Pres To Talk) switch 28. When the PTT switch 28 is pressed (turned on), the transmission / reception switching unit 16 is switched to the transmission side and transmission is performed from the antenna 17, and when released (turned off), the transmission / reception switching unit 16 is switched to the reception side and received. The audio signal is played back.

  The display unit 29 is composed of a liquid crystal display or the like, and is used to display various data. The display unit 29 displays that the wireless device 1 has received an amateur radio signal (that there has been a call), a call sign, a nickname, and the like of a transmission source (own station) and a transmission destination (counter station).

<Configuration of amateur radio system>
Next, an amateur radio system employing digital voice communication will be described with reference to FIG.

  In the system shown in FIG. 2, a repeater 3 (3a, 3b) is installed for each area 2 (2a, 2b) covering a plurality of wireless devices 1. In FIG. 2, radios 1a, 1b, and 1c are in the area 2a covered by the repeater 3a, and radios 1d and 1e are in the area 2b that is covered by the repeater 3b.

  Between adjacent repeaters 3a and 3b, voice and data are multiplexed using a microwave and transmitted. The service area connected by the repeaters 3a and 3b is called zone 5. A plurality of zones 5 (5a, 5b, 5c) are connected by the Internet 6 via the gateway 4.

If the amateur radio system 7 shown in FIG. 3 is used, various forms of communication as shown below can be realized.
(1) Direct communication between the radios 1 in each area 2 (2) Communication via the repeater 3 between the radios 1 in each area 2 (3) Radio in different areas 2 in the same zone 5 Communication between repeaters 3 between devices 1 (4) Communication between gateways 4 between the wireless devices 1 in different zones 5 and the Internet 6

<Packet configuration>
Next, the configuration of the packet generated by the transmission unit 15 will be described with reference to FIG. The packet configuration indicates how and in which order a series of digital voice communication data is transmitted together.

  The packet Pa is composed of a header part Ph and a data part Pd. The header part Ph includes a synchronization signal h1, a flag h2, a call sign h3 of a destination repeater, a call sign h4 of a source repeater, a destination call sign h5, and a source call sign h6. The synchronization signal h1 in the header part Ph is a signal indicating that the input signal is synchronized and is a signal. The flag h2 is data representing repeater communication, direct communication, a repeater control signal, and the like, and is composed of data of a plurality of bits.

  The call sign h3 of the destination repeater is, for example, the call sign of the repeater in the area to which the transmission destination radio belongs, and the call sign h4 of the transmission source repeater is the call sign of the repeater to which the transmission source radio belongs. The transmission destination call sign h5 is the call sign of the transmitting station radio, and the transmission source call sign h6 is the call sign of the local station radio. These call signs (h3 to h6) serve as identifiers for identifying transmission destinations and transmission source radio apparatuses, as well as repeaters that relay radio signals. The destination call sign h5 may be a CQ that calls an unspecified station.

  In the data portion Pd, digitized audio frames d1 and data frames d2 including data such as small still images and memos are alternately arranged, and finally an end frame d3 indicating the end of the packet is added.

<Amateur radio communication operation>
Next, an amateur radio communication operation will be described with reference to FIG. 1, FIG. 2, and FIG. Hereinafter, as a typical case, a case where the station of the radio device 1a in the area 2a in FIG. 2 calls the station of the radio device 1d in the area 2b will be described.

  Prior to communication, the user operates the operation unit 27 of the wireless device 1 to store information necessary for communication, for example, the call sign of the transmission source (own station) and the transmission repeater in the nonvolatile memory 25. deep.

  First, the user operates the operation unit 27 of the wireless device 1a to designate a call sign previously assigned to the transmission destination wireless device 1d and the call sign of the transmission destination repeater 3b, and instruct a call.

  Information input from the operation unit 27 is notified to the transmission unit 15 by the controller 21, and a packet is generated by the transmission unit 15 in accordance with an instruction from the controller 21. As shown in FIG. 3, in the header part Ph of the packet Pa, the call sign h3 of the destination repeater 3b, the call sign h4 of the source repeater 3a, the call sign h5 of the radio 1d as the transmission destination (the partner station), and the transmission Each information of the call sign h6 of the radio device 1a which is the original (own station) is included.

  The packet generated by the transmission unit 15 and converted into a radio signal is transmitted via the transmission / reception switching unit 16 and the antenna 17. The packet transmitted from the wireless device 1a is relayed by the repeaters 3a and 3b, which are designated routes, and reaches the wireless device 1d.

  The radio signal received by the radio 1d is supplied to the receiving unit 18 via the antenna 17 and the transmission / reception switching unit 16, and demodulated by the receiving unit 18 to reproduce the packet. Further, the header part is removed from the packet reproduced by the receiving unit 18 and supplied to the voice codec 14 or the interface unit 19 according to the contents of the data part.

  The audio data supplied to the audio codec 14 is decoded, further converted into an analog audio signal, and supplied to the AF amplifier 13. The audio signal amplified by the AF amplifier 13 is output from the speaker 12 to reproduce the voice of the transmission source user.

  The packet reproduced by the receiving unit 18 is supplied to the controller 21. The CPU 22 of the controller 21 determines whether the received packet is a valid packet by ECC (Error Check Code) check or the like.

  The CPU 22 stores the data of the header part of the packet determined to be valid in the RAM 24 and analyzes the information of the header part. The CPU 22 displays the transmission destination call sign and the transmission source call sign of the received packet on the display unit 29 based on the analysis result.

<Beep generation procedure>
Next, with reference to FIG. 4 and FIG. 5, the procedure for generating beep sounds of different tones will be described.

  The feature of the present invention is that the information of the header part Ph of the received packet Pa is analyzed to determine whether the packet is addressed to the own station or not, and when the packet addressed to the own station is received, the “standby beep” It is to change the tone of the beep. A table T1 shown in FIG. 4 is an arrangement of conditions for determination.

  Specifically, the table T1 in FIG. 4 shows the relationship between the flag h2 and the destination call sign h5 included in the header part Ph of the received packet Pa, the display content Dc of the display unit 29, and the tone Sb of the beep sound. Represents. In the ROM 23, data corresponding to the table T1 is stored in advance. Hereinafter, the contents of the table T1 will be described.

  In the first row of the table T1, when the value of the last three digits of the flag h2 of the header part Ph is “010”, “no response” or a corresponding message is displayed on the display unit 29, and the beep sound Sb is displayed. It shows that the timbre is set to 1.

  Here, a packet in which the last three digits of the flag h2 are “010” will be described. When the user presses the PTT switch 28 for a short time, a packet indicating that transmission is possible from the repeater 3 in the area to the wireless device 1 is sent. Since this packet is a confirmation packet and does not include a voice signal, the value of the flag is set to “010” to indicate that the packet is a confirmation packet and does not contain a voice signal. Let 1 know.

  In the second row of the table T1, when the value of the last three digits of the flag h2 in the header part Ph is “001”, a message “Relay not possible” or a message corresponding thereto is displayed on the display unit 29, and the beep sound Sb is displayed. It shows that the timbre is set to 1.

  Here, the case where the value of the last three digits of the flag h2 is “001” will be described. When a packet is transmitted from the repeater 3 to the wireless device 1 or from the wireless device 1 to the repeater 3 in one area 2, the repeater 3 transmits the packet transmitted from the other area 2 to avoid interference. It has a function to refuse transmission. In this case, the repeater 3 transmits a packet in which the flag value is set to “001” to the transmission source radio device 1 to notify that the relay cannot be performed.

  The third row of the table T1 indicates that the tone of the beep sound Sb is set to 2 when the destination call sign h5 of the header part Ph is a call sign of another station, that is, a station different from its own receiver. Show. Since the transmission source call sign is displayed on the display unit 29, the user can confirm from which station the signal is transmitted.

  The fourth line of the table T1 indicates that the tone of the beep sound Sb is set to 2 when the destination call sign h5 of the header part Ph is “CQCQCQ” indicating an unspecified station. The display Dc is the same as in the third line.

  The fifth line of the table T1 indicates that the tone of the beep sound Sb is set to 3 when the call sign h5 of the header portion Ph includes the call sign of its own station, that is, its own receiver. ing. The display Dc is the same as in the third line.

  In the table T1, the beep tone of the packet transmitted from the repeater is changed from that in other cases in order to inform the user that the packet is not a communication packet, and the transceiver described in Non-Patent Document 1 is used. Has already been adopted.

  Next, a procedure for changing the tone of the beep sound according to the contents of the header portion Ph of the packet Pa received by the wireless device 1 will be described with reference to the flowchart of FIG.

  The packet reception process shown in step S10 is a series of processes including demodulation of the received signal and packet reproduction in the reception unit 18, and since it has been described above, description thereof is omitted here.

  The controller 21 stores the data of the packet Pa reproduced by the receiving unit 18 in the RAM 24 (step S11) and analyzes the information of the header part Ph (step S12).

  The controller 21 checks the value of the last three digits of the flag h2 (see FIG. 3) in the information included in the header part Ph with the data corresponding to the table T1 in FIG. In the case of “010” or “001” (Yes in step S13), the audio output of the AF amplifier 13 is muted (step S14) and the beep sound 1 is selected (step S15).

  When the controller 21 instructs the beep signal generator 26 that the beep sound 1 has been selected, the beep signal generator 26 generates an audio signal of the tone of the beep sound 1 and outputs the sound signal from the speaker 12 as a sound (step). S22).

  Although not shown in the figure, when the value of the flag h2 is “010” or “001”, a message of “no response” or “no relay” is displayed on the display unit 29 according to the table of FIG. The

  If the flag does not indicate a specific value in step S13 (No), the process proceeds to step S16, and the sound and data are reproduced by the above-described process.

  When the controller 21 detects the end frame d3 (see FIG. 3) added to the last part of the packet Pa (Yes in step S17), the destination call sign included in the header part Ph is stored in the nonvolatile memory 25. It collates with the call sign of its own station (step S18).

  If the destination call sign h5 is not the call sign of the own station in the call sign information, the controller 21 selects the beep sound 2 based on the data corresponding to the table T1 stored in the ROM 23 (step S20). The information is output to the beep signal generator 26. The beep signal generator 26 generates a sound signal corresponding to the beep sound 2 and outputs the sound of the beep sound 2 from the speaker 12 (step S22).

  On the other hand, if the destination call sign h5 is the call sign of the local station in step S19, the controller 21 selects the beep sound 3 based on the data corresponding to the table T1 stored in the ROM 23 (step S21). ), And outputs the information to the beep signal generator 26. The beep signal generator 26 generates an audio signal corresponding to the beep sound 3, and the sound of the tone 3 of the beep sound 3 is output from the speaker 12 (step S22).

  As described above, based on the analysis result of the header part of the packet received by the wireless device, by changing the tone of the “standby beep” beep sound according to the call sign of the transmission destination, The reception of the addressed packet can be easily recognized.

  FIG. 6 shows another example of a table in which conditions for identifying packets are arranged. In the table T2 of FIG. 6, a transmission source call sign h6 is included as a determination condition in addition to the flag h2 and the transmission destination call sign h5 shown in FIG.

  The sixth line of the newly added table T2 indicates that the tone of the beep sound Sb is set to 4 when the transmission source call sign h6 of the header part Ph is a call sign A indicating a specific station. ing.

  When the table T1 of FIG. 4 is used, it can be easily recognized whether or not the transmission destination of the packet is the own station by the tone of the beep sound Sb. However, if the table T2 of FIG. It is possible to easily recognize the difference, that is, from which station the packet is transmitted. Therefore, if the table T2 is used, for example, a call from a close communication partner and a call from other stations can be identified by a beep sound.

  In this embodiment, the call sign information is stored in the non-volatile memory so that the data is not lost when the radio is turned off. However, the call sign information may be stored in a RAM backed up by a battery. .

  Furthermore, a program for causing a computer to execute the functions of the controller and beep signal generator of this embodiment may be recorded on a recording medium (for example, a CD-ROM) and distributed, or distributed over a network. The computer program is recorded and installed on a computer recording medium.

DESCRIPTION OF SYMBOLS 1 Radio | wireless machine 2, 2a, 2b Area 3, 3a, 3b Repeater 4 Gateway 5, 5a, 5b, 5c Zone 6 Internet 7 Amateur radio system 11 Microphone 12 Speaker 13 AF amplifier 14 Voice codec 15 Transmission part 16 Transmission / reception switching part 17 Antenna 18 Receiving Unit 19 Interface Unit 21 Controller 22 CPU
23 ROM
24 RAM
25 Nonvolatile memory 26 Beep signal generator 27 Operation unit 28 PTT switch 29 Display unit Pa packet Ph Head unit Pd Data unit T1, T2 Table

Claims (4)

A radio that demodulates a received radio signal to reproduce a packet, decodes an audio signal included in the packet, and performs D / A conversion to reproduce an analog audio signal;
A controller that extracts information on an identifier for identifying a transmission destination from the header portion of the packet, and analyzes the content;
A beep signal generator for generating a plurality of sound signals corresponding to a plurality of beep sounds having different timbres,
After the controller detects the end frame included in the data portion of the packet,
A beep sound corresponding to the identifier extracted from the header portion of the packet is selected from data indicating the relationship between the identifier and the plurality of beep sounds stored in advance in memory;
A radio apparatus that instructs the beep signal generator to generate an audio signal corresponding to the selected beep sound.   The radio according to claim 1, wherein a tone color of the beep differs depending on whether the identifier indicates a local station or not. The controller includes at least a CPU, a ROM, and a RAM, and a program for realizing the function of the beep signal generator is stored in the ROM.
The wireless device according to claim 1, wherein a program read from the ROM is executed by the CPU. Computer
A controller that extracts the identifier for identifying the transmission destination from the header part of the packet including the audio signal that has been A / D converted and encoded, and a controller that analyzes the information, and a plurality of beeps that correspond to a plurality of beeps with different tones A computer program that functions as a beep signal generator for generating an audio signal,
After the controller detects the end frame included in the data portion of the packet,
A beep sound corresponding to the identifier extracted from the header portion of the packet is selected from data indicating the relationship between the identifier and the plurality of beep sounds stored in advance in memory;
A computer program that instructs the beep signal generator to generate an audio signal corresponding to the selected beep sound.

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