Wireless communication device and wireless communication method

Abstract

This disclosure makes it possible to provide a wireless communication device and wireless communication method that allows the user to confirm the other party's voice without any terminal operation. [Solution] The wireless communication device 10 according to this disclosure is a wireless communication device that switches between a transmission mode and a reception mode for making calls. The wireless communication device 10 according to this disclosure includes a storage unit 13 that stores the call audio when it receives call audio from the other party in reception mode, and a playback processing control unit 14 that performs playback processing of the stored call audio depending on whether or not it has switched from reception mode to transmission mode within a predetermined time and responded to the other party.

Description

Technical Field

[0001] The present disclosure relates to a wireless communication device and a wireless communication method.

Background Art

[0002] Patent Document 1 discloses a mobile phone that can confirm the voice of a call partner without asking the partner to repeat it when the user misses the voice of the call partner during a call. In the mobile phone disclosed in Patent Document 1, when the user presses the TALK key to establish communication with the communication device of the call partner, recording of the voice of the communication partner starts, and when the user presses the STOP key, recording of that voice ends. The user can confirm the recorded voice of the call partner by pressing the playback key.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the mobile phone device disclosed in Patent Document 1 described above, voice recording is not appropriately executed and the recording cannot be confirmed unless terminal operation is performed by the user.

[0005] The present disclosure has been made in view of such circumstances, and an object thereof is to provide a wireless communication device and a wireless communication method capable of confirming the voice of the other party without terminal operation by the user.

Means for Solving the Problems

[0006] The wireless communication device according to the present disclosure is a wireless communication device that switches between a transmission mode and a reception mode to make a call, In the aforementioned receiving mode, a storage unit stores the call audio received from the other party and outputted; A playback processing control unit controls the playback process of the stored call audio depending on whether or not the system switched from the receiving mode to the transmitting mode within a predetermined time and responded to the caller. It is equipped with.

[0007] The wireless communication device described in this disclosure automatically performs a process to re-listen to the other party's voice if the user does not respond within a predetermined time. This configuration allows the user to confirm the other party's voice without any terminal operation.

[0008] The wireless communication device related to this disclosure is A wireless communication device that switches between transmission mode and reception mode for communication, In the aforementioned receiving mode, a storage unit stores the call audio received from the other party and outputted; The system includes a playback processing control unit that controls the playback process of a summarized voice recording of the stored call audio, depending on whether or not the system switched from the receiving mode to the transmitting mode within a predetermined time and responded to the caller.

[0009] The wireless communication device described in this disclosure automatically performs a process to listen to a summarized audio recording of the other party if the user does not respond within a predetermined time. This configuration allows the user to quickly confirm the other party's voice without any terminal operation.

[0010] The wireless communication method relating to this disclosure is A wireless communication method between wireless communication devices that can switch between transmission mode and reception mode, The steps include storing the call audio from the wireless communication device in transmission mode to the wireless communication device in reception mode, and the communication audio output from the wireless communication device in reception mode, Within a predetermined time, each terminal device switches between the transmission mode and the reception mode, and depending on whether the wireless communication device that has switched to the transmission mode has responded to the terminal that has switched to the reception mode, the wireless communication device that switches to the transmission mode controls the playback process of the call audio stored in the wireless communication device that switches to the transmission mode. Prepare.

[0011] The wireless communication method described in this disclosure automatically performs a process to re-listen to the other party's voice if the user does not respond within a predetermined time. This configuration allows the user to confirm the other party's voice without any terminal operation. [Effects of the Invention]

[0012] This disclosure makes it possible to provide a wireless communication device and wireless communication method that allows the user to confirm the other party's voice without any terminal operation. [Brief explanation of the drawing]

[0013] [Figure 1] This is a block diagram illustrating the control system according to Embodiment 1. [Figure 2] This is a functional block diagram of the wireless device according to Embodiment 1. [Figure 3] This is a sequence diagram showing an example of a wireless communication method according to Embodiment 1. [Figure 4] This figure shows an example of timing and audio content related to audio transmission and reception in a wireless communication device according to Embodiment 1. [Figure 5] This is a sequence diagram showing an example of a wireless communication method according to Embodiment 1. [Figure 6] This figure shows an example of timing and audio content related to audio transmission and reception in a wireless communication device according to Embodiment 1. [Figure 7] This figure shows an example of timing and audio content related to audio transmission and reception in a wireless communication device according to Embodiment 1. [Figure 8] This is a sequence diagram showing an example of a wireless communication method according to Embodiment 1. [Figure 9] The figure shows an example of the timing and voice content regarding the transmission and reception of voice in the wireless communication device according to Embodiment 1. [Figure 10] The figure is a functional block diagram of the wireless device according to Embodiment 3. [Figure 11] The figure shows an example of the hardware configuration of a computer of the wireless communication device according to Embodiments 1 to 3.

Mode for Carrying Out the Invention

[0014] Hereinafter, the present disclosure will be described through embodiments of the invention. However, the invention according to the claims is not limited to the following embodiments. Also, not all of the configurations described in the embodiments are essential as means for solving the problems. For clarity of explanation, the following description and drawings are appropriately omitted and simplified. In each drawing, the same reference numerals are assigned to the same elements, and duplicate explanations are omitted as necessary.

[0015] (Embodiment 1) <Wireless Communication System> The wireless communication system and wireless communication device according to Embodiment 1 will be described. FIG. 1 is a block diagram illustrating a control system according to Embodiment 1. In the example shown in FIG. 1, the wireless communication system 1 includes wireless communication devices 10A, 10B, 10C, 10D, and a relay device 20.

[0016] <Wireless Communication Device>​​​​​The wireless communication device 10 is, for example, a push-to-talk (PTT) terminal or a low-power transceiver. The wireless communication device 10 is used, for example, by police, fire departments, ambulance services, disaster relief teams, mountain rescue teams, coast guards, government agencies, taxi companies, and trucking companies for communication.

[0018] The wireless communication device 10 enables voice communication by alternating between a transmitting channel (transmit mode) and a receiving channel (receive mode). For example, while a button is pressed, the wireless communication device 10 switches to the transmitting channel (transmit mode) and can transmit voice to the wireless communication device on the receiving channel (receive mode). Also, when the button is not pressed, the wireless communication device 10 switches to the receiving channel (receive mode) and can receive voice from the wireless communication device on the transmitting channel (transmit mode). Naturally, the wireless communication device 10 is equipped with a microphone and a speaker.

[0019] The communication method between the wireless communication devices 10 may be, for example, half-duplex or simplex. Half-duplex is a type of half-duplex communication in which communication is performed alternately using a transmitting channel (transmit mode) and a receiving channel (receive mode) via a relay device 20, which will be described later. Simplex is a type of half-duplex communication that uses a predetermined channel without going through the relay device 20, which will be described later.

[0020] Using wireless communication devices 10A and 10B as examples, an example of wireless communication device 10A outputting an audio signal from wireless communication device 10B will be described. Wireless communication device 10B selects one channel from among several channels and transmits an audio signal to wireless communication device 10A. Since wireless communication device 10A intermittently receives each of the multiple predetermined channels, it receives the audio signal from wireless communication device 10B. As a result, wireless communication device 10A outputs the audio signal from wireless communication device 10B through its speaker.

[0021] Alternatively, the user may select one channel from among several channels by selecting a number, and the wireless communication device 10 may modulate the audio signal collected by the microphone through the channel selected by the user and transmit it to other wireless communication devices 10.

[0022] The wireless communication device 10 is a portable wireless communication device carried by the user, such as the wireless communication devices 10A to 10C shown in Figure 1. In this case, the wireless communication device 10 is positioned so that the user can hold it and make calls. More specifically, the wireless communication device 10 is fixed to the user's belt using a grip or the like. Alternatively, the wireless communication device 10 may be housed in a shoulder-mounted holder so that the user can make calls without holding it.

[0023] Furthermore, the wireless communication device 10 may be a wireless communication device that can be mounted on a mobile body such as a vehicle or ship, as shown in Figure 1, for example, the wireless communication device 10D. In this case, the wireless communication device 10 may be configured so that the user can hold the microphone and speak. Moreover, the wireless communication device 10 may be configured so that the user can communicate hands-free without holding the microphone. More specifically, the wireless communication device 10 may include a function that transmits voice when it detects a sound above a predetermined volume without the user pressing a PTT button, such as a hands-free function or a VOX (Voice Operation Transmission) function, a headset, or a stand microphone.

[0024] <Relay device> The relay device 20 shown in Figure 1 relays radio waves received from one wireless communication device 10 to another wireless communication device 10. The relay device 20 may also convert the radio waves received on the transmitting channel to the receiving channel before relaying them. In the example shown in Figure 1, the wireless communication system 1 has one relay device 20, but it may have multiple relay devices 20.

[0025] Furthermore, Figure 1 shows an example where the wireless communication system 1 communicates with wireless communication devices 10 via a relay device 20. However, the wireless communication system 1 is not limited to this, and may also be configured to communicate directly with the wireless communication devices 10 without a relay device 20.

[0026] <Functional blocks of wireless communication devices> Referring to Figure 2, the configuration of the wireless communication device according to Embodiment 1 will be described. Figure 2 is a functional block diagram of the wireless communication device according to Embodiment 1. As shown in Figure 2, the wireless communication device 10 includes a transmitting unit 11, a receiving unit 12, a storage unit 13, and a playback processing control unit 14.

[0027] The transmitter 11 transmits the user's voice to other wireless communication devices 10 in a transmission channel (transmission mode). For example, while the PTT button provided on the housing of the wireless communication device 10 is pressed (while in transmission mode), the transmitter 11 transmits the user's voice, picked up by the microphone, to other wireless communication devices 10 through the selected channel. Alternatively, the transmitter 11 may be configured to transmit voice through the selected channel while the user is pressing the PTT button, and to stop transmitting voice through the selected channel when the user releases the PTT button.

[0028] The receiving unit 12 receives the voice of the other party (another user) from another wireless communication device 10 in a receiving channel (receiving mode). The receiving unit 12 outputs the voice of the other party (another user) from the speaker. When the storage unit 13 receives the voice from the other party in receiving mode, it stores the received and outputted voice.

[0029] The playback processing control unit 14 controls the playback processing of the call audio stored in the storage unit 13, depending on whether the wireless communication device 10 switched from a receiving channel (receiving mode) to a transmitting channel (transmitting mode) within a predetermined time and responded to the other party.

[0030] Specifically, the playback processing control unit 14 controls the system so that if the user switches from the receiving channel (receiving mode) to the transmitting channel (transmitting mode) within a predetermined time and answers the other party, it does not execute the playback processing of the stored call audio. On the other hand, if the user does not switch from the receiving channel (receiving mode) to the transmitting channel (transmitting mode) within a predetermined time and answers the other party, the playback processing control unit 14 controls the system so that it executes the playback processing of the stored call audio. As a result, the audio stored in the storage unit 13 is played back from the speaker.

[0031] In other words, the playback processing control unit 14 controls the system to perform playback processing of received and outputted audio if the user misses listening to that audio. Essentially, the playback processing control unit 14 controls the system to perform a replay process so that the user can listen to the audio they missed. This allows the user to listen to the audio again without performing any further terminal operations, even if they miss listening to the audio received and output by the wireless communication device.

[0032] Furthermore, the transmitting unit 11 may, along with the playback processing of the stored call audio by the playback processing control unit 14, transmit a signal to the wireless communication device of the other party informing them that playback processing of the stored call audio is in progress. This signal is, for example, a signal generated by a unique combination of frequency, volume, and modulation in the communication frequency band. Upon receiving the signal indicating that playback processing is in progress, the wireless communication device will, for example, play back the message, "The other party is listening to the call audio again."

[0033] For example, the wireless communication device 10 receives a signal from the other party's wireless communication device indicating that playback processing is in progress, along with voice data such as "The other party is listening to the call audio again," and plays back "The other party is listening to the call audio again." The wireless communication device 10 may also be configured as follows.

[0034] The memory unit 13 has pre-stored audio to be played back when it receives a signal indicating that playback processing is in progress, such as "The other party is listening to the call audio again." The wireless communication device 10, upon receiving a signal indicating that playback processing is in progress, plays back the audio "The other party is listening to the call audio again." stored in the memory unit 13.

[0035] Furthermore, the signal indicating that playback processing is in progress is not limited to an audio signal; for example, it could be a display signal for display on a wireless communication device or a vibration signal to vibrate the wireless communication device. When a wireless communication device receives a display signal, it will display "The other party is listening to the audio again." When a wireless communication device receives a vibration signal, it will vibrate as prescribed.

[0036] <Request for re-listening> Referring to Figures 3 to 9, an example of the processing of the wireless communication system 1 according to Embodiment 1, that is, an example of a wireless communication method, will be described. Below, both cases will be described: one in which the user responds without listening to the received audio again, and another in which the user listens to the received audio again before responding.

[0037] <No need to ask for clarification> Figure 3 is a sequence diagram showing an example of a wireless communication method according to Embodiment 1. Figure 4 is a diagram showing an example of timing and audio content related to the transmission and reception of audio in a wireless communication device according to Embodiment 1. Figures 3 and 4 will be explained using the wireless communication device 10A and wireless communication device 10B shown in Figure 1 as examples. In Figure 4, the time axis corresponding to each step shown in Figure 3 is also shown.

[0038] Furthermore, Figures 3 and 4 show an example where, after user A of wireless communication device 10A speaks to user B of wireless communication device 10B, user B of wireless communication device 10B responds to user A of wireless communication device 10A without user B asking for clarification.

[0039] As shown in Figure 3, the transmitter 11 of the wireless communication device 10A transmits the voice message "Proceed to point X immediately" from user A to the receiver 12 of the wireless communication device 10B (step S1). Step S1 shown in Figure 3 corresponds to the time interval shown in t2 to t4 in Figure 4.

[0040] Next, as shown in Figure 3, the receiving unit 12 of the wireless communication device 10B outputs the received voice message from user A, "Proceed to point X immediately," through the speaker (step S2). Step S2 shown in Figure 3 corresponds to the time interval shown in t3 to t5 in Figure 4. At this time, the storage unit 13 records the voice message from user A that was received and output through the speaker, so that user B can listen to user A's voice again.

[0041] Next, as shown in Figure 3, the transmitter 11 of the wireless communication device 10B waits for a response from user B (step S3). User B's response is to press the PTT button to switch from receive mode to transmit mode and respond to user A. This waiting for user B's response continues for a predetermined time called Twait.

[0042] Next, as shown in Figure 3, in the wireless communication device 10B, user B presses the PTT button and responds with "Understood" (step S4). Here, as shown in Figure 4, the response waiting time for user B is the response waiting time Ta shown in the t5-t6 interval. The response waiting time Ta is shorter than the predetermined time Twait. Therefore, the playback processing of user A's call audio stored by the playback processing control unit 14, in other words, the re-listening process in the wireless communication device 10B is not executed.

[0043] Next, the transmitter 11 of the wireless communication device 10B transmits the voice message "Understood" from user B to the receiver 12 of the wireless communication device 10A (step S5). Step S5 shown in Figure 3 corresponds to the time interval t6 to t8 shown in Figure 4.

[0044] Next, the receiving unit 12 of the wireless communication device 10A outputs the received voice message "Understood" from user B through the speaker (step S6). Step S6 shown in Figure 3 corresponds to the time interval t7 to t9 shown in Figure 4.

[0045] Thus, if user B does not miss the voice from user A or responds immediately, the wireless communication device 10B does not perform the process of listening to user A's voice again.

[0046] <Requires re-listening> Referring to Figures 5 and 6, an example will be described in which user A of wireless communication device 10A speaks to user B of wireless communication device 10B, user B asks for clarification once, and user B of wireless communication device 10B responds to user A of wireless communication device 10A.

[0047] Figure 5 is a sequence diagram showing an example of a wireless communication method according to Embodiment 1. Figure 6 is a diagram showing an example of timing and audio content related to the transmission and reception of audio in a wireless communication device according to Embodiment 1. In Figure 6, the time axis corresponding to each step shown in Figure 5 is also shown.

[0048] Steps S21 and S22 shown in Figure 5 are the same as steps S1 and S2 shown in Figure 3, so their explanation will be omitted. Here, we will explain steps S23 and onward.

[0049] As shown in Figure 5, the transmitter 11 of the wireless communication device 10B waits for a response from user B (step S23). This waiting for a response from user B continues for a predetermined time Twait. Here, as shown in Figure 6, the response waiting time Tb shown in the interval t15~t16 is assumed to be the response waiting time Tb. The response waiting time Tb is the same as the predetermined time Twait.

[0050] Next, as shown in Figure 5, when the response waiting time Tb reaches a predetermined time Twait, the playback processing control unit 14 of the wireless communication device 10B controls the storage unit 13 to perform playback processing of user A's voice message, "Proceed to point X immediately" (step S24). This playback of user A's voice by the playback processing control unit 14 is equivalent to user B listening to user A's voice again.

[0051] Furthermore, step S24 shown in Figure 5 corresponds to the time shown in the t16-t18 section in Figure 6. Also, as shown in Figure 6, the time shown in the t16-t18 section corresponding to step S24 is the same as the time shown in the t13-t15 section corresponding to step S22. In other words, the playback processing control unit 14 of the wireless communication device 10B is controlled to perform playback processing of the same audio at the same speed as the missed audio. Note that the playback processing control unit 14 of the wireless communication device 10B is not limited to the example shown in Figure 6, and may be controlled to perform playback processing of the same audio at a faster or slower speed than the missed audio.

[0052] Next, as shown in Figure 5, the transmitter 11 of the wireless communication device 10B transmits a signal to the receiver 12 of the wireless communication device 10A indicating that it is performing a re-listening process (step S25). Next, as shown in Figure 5, the receiver 12 of the wireless communication device 10A outputs an audio message from its speaker indicating that user B is listening again (step S26). This allows user A to understand that user B is listening again to an audio message such as "Proceed to point X immediately." Step S26 shown in Figure 5 corresponds to the time shown in the section t17-t20 in Figure 6.

[0053] Next, as shown in Figure 5, the transmitting unit 11 of the wireless communication device 10B waits for a response from user B (step S27). This waiting for a response from user B continues for a predetermined time called Twait.

[0054] Next, as shown in Figure 5, in the wireless communication device 10B, user B presses the PTT button and responds with "Understood" (step S28). Here, as shown in Figure 6, the response waiting time for user B is the response waiting time Tc shown in the section t18-t19. The response waiting time Tc is shorter than the predetermined time Twait. Therefore, the playback processing of user A's call audio stored by the playback processing control unit 14, in other words, the replay processing in the wireless communication device 10B is not executed.

[0055] Next, the transmitter 11 of the wireless communication device 10B transmits the voice message "Understood" from user B to the receiver 12 of the wireless communication device 10A (step S29). Step S29 shown in Figure 5 corresponds to the time interval t19 to t22 shown in Figure 6.

[0056] Next, the receiving unit 12 of the wireless communication device 10A outputs the received voice message "Understood" from user B through the speaker (step S30). Step S30 shown in Figure 5 corresponds to the time interval t21~t23 shown in Figure 6.

[0057] In this way, if user B misses the voice message from user A, and user B does not respond within a predetermined Twait time, the wireless communication device 10B automatically performs a process to listen to user A's voice again. With this configuration, users can confirm the other party's voice and respond without any terminal operation.

[0058] In the work of police, fire departments, ambulance services, disaster relief teams, mountain rescue teams, coast guard, government agencies, taxi companies, trucking companies, and others, calls may be initiated suddenly due to the nature of their work. Furthermore, if the operator is not in a position suitable for listening to incoming audio, or if the environment makes it difficult to hear the incoming audio, they may miss some of the message. This could lead to a lack of understanding of the content and hinder smooth communication, potentially impeding the smooth execution of duties.

[0059] In contrast, the wireless communication system 1 and wireless communication device 10 according to Embodiment 1 automatically perform a process of listening to the received audio again, so that the user can properly understand the content and have a smooth conversation. As a result, the user can carry out their work smoothly.

[0060] <Some parts need to be re-listened to> Figures 5 and 6 illustrate an example in which all of User A's audio is played back so that User B can listen again to all of User A's audio that was missed. However, the system is not limited to this, and the playback processing control unit 14 may control the system to play back only a portion of User A's audio so that User B can listen again to a portion of User A's audio.

[0061] The following will be explained in detail with reference to Figures 5 and 7. Figure 7 is a diagram showing an example of timing and audio content related to audio transmission and reception in a wireless communication device according to Embodiment 1. In Figure 7, the time axis corresponding to each step shown in Figure 5 is also shown. Steps S21 to S23 shown in Figure 5 will be explained similarly and will therefore be omitted. Also, the section t11 to t17 in Figure 6 corresponds to the section t31 to t37 in Figure 7. The response waiting time Td in Figure 7 is equal to the response waiting time Tb in Figure 6, and is the same as the predetermined time Twait.

[0062] As shown in Figure 7, when the waiting time Td reaches a predetermined time Twait, the playback processing control unit 14 of the wireless communication device 10B controls the playback processing of the voice of user A, "Proceed to point X immediately," recorded by the storage unit 13 (step S24). Accordingly, as shown in Figure 7, the transmission unit 11 of the wireless communication device 10B transmits a signal to the wireless communication device 10A indicating that the listening process is in progress (step S25). Then, as shown in Figure 7, the receiving unit 12 of the wireless communication device 10A outputs a voice message from the speaker indicating that user B is listening again (step S26).

[0063] Here, as shown in Figure 7, when User B hears only the beginning "To location X" again, the wireless communication device 10B presses the PTT button and responds with "Understood" (step S28). Then, as shown in Figure 7, the playback processing control unit 14 of the wireless communication device 10B controls the playback process (step S24) to end when User A says "To location X". Accordingly, the receiving unit 12 of the wireless communication device 10A stops playing the audio indicating that User B is listening again (step S26).

[0064] In other words, as shown in Figure 6, User B should normally hear User A's voice message, "Proceed to point X immediately," over the time indicated in the t16-t18 interval. However, as shown in Figure 7, if User B presses the PTT button after hearing only the beginning, "To point X," the system controls User B to play User A's voice message up to "To point X" over the time indicated in the t36-t38 interval. Naturally, the time indicated in the t36-t38 interval (see Figure 7) is shorter than the time indicated in the t16-t18 interval (see Figure 6).

[0065] On the other hand, as shown in Figure 6, User A should have heard an audio message indicating that User B was listening again for the time period shown in the t17-t20 interval. However, as shown in Figure 7, if User B presses the PTT button after listening only to the beginning "to point X", User B will hear an audio message indicating that User B was listening again for the time period shown in the t37-t39 interval. Naturally, the time period shown in the t37-t39 interval (see Figure 7) is shorter than the time period shown in the t17-t20 interval (see Figure 6).

[0066] The process from step S29 onward in Figure 7 is the same as in Figure 6, so the explanation is omitted. In this way, even if User B misses part of User A's voice, they can listen to only the relevant part again. Therefore, User B can quickly carry out their work.

[0067] <Execute the process of asking for clarification up to a predetermined number of times> Here, the playback processing control unit 14 may be configured to repeatedly play back user A's voice until a predetermined number of times is reached. This will be explained in detail with reference to Figures 8 and 9. Figure 8 is a sequence diagram showing an example of a wireless communication method according to Embodiment 1. Figure 9 is a diagram showing an example of timing and voice content related to voice transmission and reception in a wireless communication device according to Embodiment 1. In Figure 9, the time axis corresponding to each step shown in Figure 8 is also shown. In Figure 9, the response waiting times Te and Tf are both the same as the predetermined time Twait. Also, in Figure 9, the response waiting time Tg is shorter than the predetermined time Twait.

[0068] Figures 8 and 9 show an example where user A of wireless communication device 10A speaks to user B of wireless communication device 10B, user B asks for clarification twice, and user B of wireless communication device 10B responds to user A of wireless communication device 10A.

[0069] In other words, in Figures 8 and 9, the processing related to the playback of user A's voice (steps S23 to S26 shown in Figure 6) is repeated twice, compared to Figures 5 and 6. Put another way, in Figures 8 and 9, the processing related to the playback of user A's voice is executed twice by steps S53 to S56 and S57 to S60. The other processing in Figures 8 and 9 is the same as in Figures 5 and 6, so its explanation is omitted.

[0070] In this way, if user B misses user A's voice, the wireless communication device 10B automatically performs a process to listen to user A's voice again a predetermined number of times. With this configuration, user A's voice is played back repeatedly, so user B can reliably confirm the other party's voice before responding.

[0071] In the examples shown in Figures 8 and 9, User A's voice is played twice, but the predetermined number of times User A's voice is repeated can be arbitrarily set by User B. Furthermore, the playback processing control unit 14 may be configured to change the predetermined number of times User A's voice is repeated based on the importance of User A's voice. For example, if User A's voice contains words related to an accident or incident, such as "injured person," the playback processing control unit 14 may control the system to increase the predetermined number of times User A's voice is repeated.

[0072] In the examples shown in Figures 8 and 9, the playback processing control unit 14 determines whether the response waiting times Te, Tf, and Tg are within a predetermined Twait time. The playback processing control unit 14 may change the predetermined Twait time each time. For example, the playback processing control unit 14 shortens the predetermined Twait time as the number of repetitions increases. More specifically, the playback processing control unit 14 shortens the predetermined Twait time after repeating User A's voice for the second time compared to the predetermined Twait time after repeating User A's voice for the first time.

[0073] <Combining audio> In the example shown in Figures 5 to 9 above, we described an example in which user A of wireless communication device 10A utters "Proceed to point X immediately," and the playback processing control unit 14 of wireless communication device 10B processes and plays back "Proceed to point X immediately." The playback processing by the playback processing control unit 14 is not limited to this and may be done as follows. If user A of wireless communication device 10A utters two phrases, "To point X" and "Proceed immediately," by pressing the PTT button twice, the playback processing control unit 14 may combine the two phrases, "To point X" and "Proceed immediately," and play back "Proceed to point X immediately." In this way, the playback processing control unit 14 may be controlled to combine user A's consecutive utterances into one and play them back.

[0074] As another example, the playback processing control unit 14 may control the playback process if user A's utterance is not a sentence, for example, if it is a single word, by combining the consecutive utterances into a sentence. Alternatively, the playback processing control unit 14 may control the playback process by combining consecutive utterances based on the number of characters in user A's utterance.

[0075] (Embodiment 2) A wireless communication device according to Embodiment 2 will now be described. The wireless communication device according to Embodiment 2 is characterized by its ability to change the playback speed of the voice of the person being spoken to and to summarize the voice of the person being spoken to. Since each functional block of the wireless communication device according to Embodiment 2 is the same as that of the wireless communication device according to Embodiment 1 shown in Figure 2, a detailed explanation will be omitted.

[0076] <Playback speed> The playback processing control unit 14 may change the playback speed of the stored call audio based on the number of times the call audio has been played back. For example, the playback processing control unit 14 increases the playback speed of the stored call audio as the number of times the call audio has been played back increases. Generally, since the content can be grasped after each listen, it is assumed that the content can be understood even if the playback speed increases with each listen. This allows the user to respond to the other party on the call more quickly and to perform their duties more promptly.

[0077] Furthermore, if there is no response after playback a predetermined number of times or more, the playback control unit 14 may slow down the playback speed of the stored call audio. This is because if there is no response after multiple attempts to listen to the audio again, there is a possibility that the played call audio may not be accurately heard. This allows the user to respond to the other party on the call and carry out their work.

[0078] <Summary> Furthermore, the playback processing control unit 14 may create a summarized audio by summarizing the stored call audio, and control the system to play back the summarized audio instead of the stored call audio. The summarized audio is, for example, an audio recording that summarizes the important parts of the stored call audio.

[0079] Here is an example of a summarized voice message. Suppose the recorded call is "A fire has broken out at location X, and there are several injured people. Anyone near location X should go there immediately." In this case, the summarized voice message should be a summary that can be used immediately upon hearing the audio, for example, "Location X, fire, go immediately." Alternatively, the summarized voice message could also be "Location X, fire, occurred, several injured, anyone near location X, go immediately," omitting particles such as "de" and "ga."

[0080] Furthermore, the playback processing control unit 14 may extract locations, events, and actions to create a summarized audio. The playback processing control unit 14 may also create a summarized audio by omitting connecting words such as "um" or "so." Additionally, the playback processing control unit 14 may create a summarized audio based on a glossary arbitrarily set by the user, for example, terms and numbers related to locations.

[0081] Furthermore, the playback processing control unit 14 may create a summarized speech using a learning model that has learned to determine a summarized speech based on the stored call speech as input. The learning model is generated, for example, by training using a neural network.

[0082] In this way, by controlling the playback processing control unit 14 to perform playback processing of the summarized audio, the user can respond to the caller more quickly and perform their duties more promptly.

[0083] Furthermore, the playback processing control unit 14 may control the playback process of the stored call audio up to a predetermined number of times, and then execute the playback process of the summarized audio once the predetermined number of times has been exceeded. (Embodiment 3) <Call environment> A wireless communication device according to Embodiment 3 will be described. A key feature is that it performs voice playback processing based on external environmental information. Figure 10 is a functional block diagram of the wireless device according to Embodiment 3. As shown in Figure 10, the wireless communication device 200 includes a transmitter 11, a receiver 12, a storage unit 13, a playback processing control unit 201, and an environmental sensor 202.

[0084] The transmitting unit 11, receiving unit 12, and storage unit 13 are the same as those in the wireless communication device according to Embodiment 1, so their description will be omitted. Here, the regeneration processing control unit 201 and the environmental sensor 202 will be described.

[0085] The environmental sensor 202 acquires external environmental information from the wireless communication device 200. This external environmental information includes, for example, information about ambient sound, vibration, and brightness. The environmental sensor 202 is, for example, a sound sensor or a vibration sensor.

[0086] The playback processing control unit 201 controls the system to perform playback processing of the call audio based on external environmental information. This will be explained using the example where the environmental sensor 202 is a sound sensor. Before the wireless communication device 200 receives the voice of the other party, for example, the playback processing control unit 201 obtains the ambient sound level from the environmental sensor 202 immediately before reception. If the ambient sound level is above a predetermined standard, the playback processing control unit 201 controls the system to perform playback processing of the call audio. This is because in a noisy environment immediately before reception, there is a high possibility that the call audio will need to be listened to again. Furthermore, if the ambient sound level is above a predetermined standard, the system may control the system to adjust the playback volume according to the ambient sound level when performing playback processing of the call audio.

[0087] On the other hand, the playback processing control unit 201 controls the system so that it does not perform playback processing of the call audio if the ambient noise level is below a predetermined standard. This is because, immediately before reception, in a quiet environment, the likelihood of listening to the call audio again is low.

[0088] Let's explain using the example where the environmental sensor 202 is a vibration sensor. Before the wireless communication device 200 receives the voice of the person it is talking to, for example, the vibration level immediately before reception is obtained from the environmental sensor 202. If the vibration level is above a predetermined standard, the playback processing control unit 201 controls the device to perform playback processing of the call audio. This is because there is a possibility that the person was moving immediately before reception, and therefore there is a high possibility that they will need to listen to the call audio again.

[0089] On the other hand, the playback processing control unit 201 controls the system so that it does not perform playback processing of the call audio if the vibration level is below a predetermined standard. This is because there is a possibility that the device is stationary immediately before reception, and therefore the likelihood of listening to the call audio again is low.

[0090] In this way, the wireless communication device 200 can determine whether or not to perform call audio playback processing based on external environmental information. Therefore, depending on the user's environment, the wireless communication device 200 can automatically replay the voice of the person they are talking to.

[0091] <Hardware configuration of wireless communication device> Figure 11 shows an example of the hardware configuration of a computer in a wireless communication device according to Embodiments 1 to 3. In the example shown in Figure 11, the computer 100 of the wireless communication device 10 includes a processor 101, memory 102, and a communication interface 103. The processor 101, memory 102, and communication interface 103 may be connected by a bus or the like. The memory 102 stores at least a portion of the program 104. The communication interface 103 includes an interface necessary for communication with other network elements.

[0092] When program 104 is executed through the cooperation of the processor 101 and memory 102, etc., the computer 100 performs at least some of the processing of embodiments of the present invention. Memory 102 may be any type suitable for a local technology network. Memory 102 may, in non-limiting examples, be a non-temporary computer-readable storage medium. Memory 102 may also be implemented using any suitable data storage technology, such as semiconductor-based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory. Although only one memory 102 is shown for computer 100, computer 100 may have several physically different memory modules. Processor 101 may be any type. Processor 101 may include one or more general-purpose computers, dedicated computers, microprocessors, digital signal processors (DSPs), and, in non-limiting examples, processors based on multicore processor architectures. Computer 100 may have multiple processors, such as application-specific integrated circuit chips that are time-dependent to a clock that synchronizes the main processor.

[0093] In the examples described above, the program includes a set of instructions (or software code) that, when loaded into a computer, cause the computer to perform one or more of the functions described in the embodiments. The program may be stored on a non-temporary computer-readable medium or a physical storage medium. Examples, but not limited to, include random-access memory (RAM), read-only memory (ROM), flash memory, solid-state drive (SSD) or other memory technologies, CD-ROM, digital versatile disc (DVD), Blu-ray® disc or other optical disc storage, magnetic cassette, magnetic tape, magnetic disk storage or other magnetic storage devices. The program may be transmitted over a temporary computer-readable medium or a communication medium. Examples, but not limited to, include temporary computer-readable medium or a communication medium that includes electrically, optically, acoustically or otherwise propagating signals.

[0094] While the above-described wireless communication device illustrates a hardware configuration example, it can be implemented in hardware, dedicated circuitry, software, logic, or any combination thereof. Some embodiments may be implemented in hardware, while others may be implemented in firmware or software that can be executed by a controller, microprocessor, or other computing device.

[0095] Although the present disclosure has been described in accordance with the above embodiments, the present disclosure is not limited to the configuration of the above embodiments, and of course includes various modifications, alterations, and combinations that a person skilled in the art could make within the scope of the claims of the present patent application. [Explanation of Symbols]

[0096] 1. Wireless communication system 10, 10A, 10B, 10C, 10D, 200 Wireless communication equipment 11 Transmitter 12 Receiver 13 Storage section 14,201 Regeneration Processing Control Unit 20 Relay device 100 Computers 101 Processors 102 memory 103 Communication Interface 104 Programs 202 Environmental Sensors

Claims

1. A wireless communication device that switches between transmission mode and reception mode for communication, In the aforementioned receiving mode, a storage unit stores the call audio received from the other party and outputted; A playback processing control unit controls the playback process of the stored call audio depending on whether or not the system switched from the receiving mode to the transmitting mode within a predetermined time and responded to the caller. A wireless communication device equipped with the following features.

2. The system further includes a transmitting unit that, along with the playback processing of the stored call audio, transmits a signal to the wireless communication device of the other party in the call indicating that the playback processing of the stored call audio is in progress. The wireless communication device according to claim 1.

3. The playback processing control unit changes the playback speed of the stored call audio based on the number of times the call audio has been played back. The wireless communication device according to claim 1 or 2.

4. A wireless communication device that switches between transmission mode and reception mode for communication, In the aforementioned receiving mode, a storage unit stores the call audio received from the other party and outputted; A playback processing control unit controls the playback process of a summarized voice recording of the stored call audio, depending on whether or not the system switched from the receiving mode to the transmitting mode within a predetermined time and responded to the caller. A wireless communication device equipped with the following features.

5. A wireless communication method between wireless communication devices that can switch between transmission mode and reception mode, The steps include storing the call audio from the wireless communication device in transmission mode to the wireless communication device in reception mode, and the call audio output from the wireless communication device in reception mode, Within a predetermined time, each of the aforementioned wireless communication devices switches between the transmission mode and the reception mode, and depending on whether or not the wireless communication device that has switched to the transmission mode has responded to the terminal that has switched to the reception mode, the process of playing back the stored call audio in the wireless communication device that switches to the transmission mode is controlled. A wireless communication method equipped with [a specific feature / feature].

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