Method for controlling a communication terminal, a communication system, and a communication terminal

Abstract

When one communication terminal connects to a plurality of master devices and attempts to receive information from each of them, it is not possible to efficiently receive the information transmitted from each of the master devices. [Solution] A control method for a communication terminal is a control method for a communication terminal that is connected to a first terminal that transmits first information and one or more second terminals that transmit second information, and that has a main communication terminal and a sub-communication terminal, wherein when the main communication terminal receives the first information transmitted from the first terminal within a predetermined unit time, it omits transmitting a signal indicating completion of reception to the first terminal and receives the second information transmitted from the second terminal during the remaining time of the predetermined unit time, and the sub-communication terminal receives the first information transmitted from the first terminal to the main communication terminal within the predetermined unit time.

Description

[Technical Field]

[0001] The present disclosure relates to a control method for a communication terminal, a communication system, and a communication terminal. [Background technology]

[0002] Patent Document 1 describes a method for dynamically managing the configuration of a link between a Bluetooth audio source and a Bluetooth audio sink or a link between a master device and a slave device. Patent Document 1 describes the relationship between a single master device (e.g., a smartphone) and a single slave device (e.g., wireless earphones) that communicates with the single master device. Meanwhile, there is a recent demand for a single pair of wireless earphones to connect to multiple master devices (smartphones) and receive information from each of them. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2023-134491 Summary of the Invention [Problem to be solved by the invention]

[0004] The present disclosure has been devised in view of the above-described conventional circumstances, and aims to provide a control method for a communication terminal, a communication system, and a communication terminal that can efficiently receive information transmitted from a master device when one communication terminal connects to multiple master devices and attempts to receive information from each of them. [Means for solving the problem]

[0005] The present disclosure provides a control method for a communication terminal that includes a main communication terminal and a sub-communication terminal, each connected to a first terminal that transmits first information and one or more second terminals that transmit second information, wherein the main communication terminal, upon receiving the first information transmitted from the first terminal within a predetermined unit time, omits transmitting a signal indicating completion of reception to the first terminal and receives the second information transmitted from the second terminal during the remaining time of the predetermined unit time, and the sub-communication terminal receives the first information transmitted from the first terminal to the main communication terminal within the predetermined unit time.

[0006] The present disclosure also provides a communication system comprising a first terminal that transmits first information, one or more second terminals that transmit second information, a main communication terminal and a sub-communication terminal connected to each of the first terminal and the second terminal, wherein when the main communication terminal receives the first information transmitted from the first terminal within a predetermined unit time, it omits transmitting a signal indicating completion of reception to the first terminal and receives the second information transmitted from the second terminal during the remaining time of the predetermined unit time, and the sub-communication terminal receives the first information transmitted from the first terminal to the main communication terminal within the predetermined unit time.

[0007] The present disclosure also provides a communication terminal that is connected to a first terminal that transmits first information and one or more second terminals that transmit second information, and that includes: a main earphone that, upon receiving the first information transmitted from the first terminal within a predetermined unit time, omits transmitting a signal indicating completion of reception to the first terminal and receives the second information transmitted from the second terminal during the remaining time of the predetermined unit time; and a sub-communication terminal that receives the first information transmitted from the first terminal to the main communication terminal within the predetermined unit time. [Effects of the Invention]

[0008] According to this disclosure, when a single communication terminal attempts to connect to multiple master devices and receive information from each of them, it is possible to efficiently receive information transmitted from each master device. [Brief explanation of the drawings]

[0009] [Figure 1] A diagram showing an example of the overall configuration of the communication system according to this embodiment. [Figure 2] Block diagram showing an example of the internal configuration of the earphone according to this embodiment. [Figure 3] FIG. 1 is a flow chart showing an example of control of the main earphone according to the present embodiment. [Figure 4] Follow diagram showing an example of control of the secondary earphone according to this embodiment. [Figure 5] A diagram illustrating an example of communication between the master device and the primary and secondary earphones in a comparative example. [Figure 6] A diagram illustrating an example of communication between the master device and the main earphone and sub-earphone according to this embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] (Background to this disclosure) Conventionally, when wireless earphones (an example of a communication terminal) are linked to a master device such as a smartphone, the connection is one-to-one. However, in recent years, one wireless earphone can be connected to multiple master devices, and there has been a demand for more efficient communication between the multiple master devices.

[0011] Therefore, in the following embodiments, an object is to provide a control method for a communication terminal, a communication system, and a communication terminal that can more efficiently receive information transmitted from each master device when one communication terminal connects to multiple master devices and attempts to receive information from each master device.

[0012] Hereinafter, with reference to the drawings as appropriate, detailed descriptions of embodiments that specifically disclose the configuration and operation of a communication terminal control method, a communication system, and a communication terminal according to the present disclosure will be provided. However, unnecessary detailed descriptions may be omitted. For example, detailed descriptions of well-known matters or redundant descriptions of substantially identical configurations may be omitted. This is to avoid unnecessary redundancy in the following description and to facilitate understanding by those skilled in the art. Note that the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure and are not intended to limit the subject matter recited in the claims. Furthermore, unless otherwise specified, the order of the steps in the flow chart may be reversed.

[0013] First, a communication system 100 according to the present embodiment will be described with reference to Fig. 1 and Fig. 2. Fig. 1 is a diagram showing an example of the overall configuration of the communication system 100 according to the present embodiment. Fig. 2 is a block diagram showing an example of the internal configuration of earphones according to the present embodiment. It goes without saying that the communication system 100 shown in Fig. 1 is just an example and is not limited to this. Furthermore, in this disclosure, an example will be described in which wireless earphones, as an example of a communication terminal, connect to smartphones, as an example of multiple master devices, and receive information from each of them, but the communication terminal is not limited to this.

[0014] The communication system 100 includes a plurality of master devices, namely, a primary smartphone 210 and a secondary smartphone 220, and a wireless earphone 200 having a primary earphone 200A and a secondary earphone 200B. The primary earphone 200A and the secondary earphone 200B share connection information with the master device via an intra-earphone network 201. While the present disclosure illustrates an example in which the master devices are two smartphones, this is not limiting. The master device may be any device capable of Bluetooth communication, such as a personal computer (PC), a laptop computer, or a tablet terminal, or any combination of these different types of devices.

[0015] Between the primary smartphone 210 and the secondary smartphone 220, the wireless earphone 200 communicates preferentially with the primary smartphone 210. That is, this may involve situations such as receiving audio information of a voice call from the primary smartphone 210 with the wireless earphone 200, maintaining communication with the secondary smartphone 220 while receiving audio information transmitted from the primary smartphone 210, and receiving control information such as an incoming call notification transmitted from the secondary smartphone 220.

[0016] The main earphone 200A communicates with the main smartphone 210 and the sub-smartphone 220 by establishing a Bluetooth communication link with them, and obtains information transmitted from either the main smartphone 210 or the sub-smartphone 220.

[0017] Furthermore, the wireless earphone 200 acquires audio information transmitted from the main smartphone 210 by eavesdropping on the audio information transmitted via Bluetooth communication between the main earphone 200A and the main smartphone 210 through the secondary earphone 200B.

[0018] 2, the main earphone 200A and the secondary earphone 200B of the wireless earphone 200 each include a communication unit 20, a processor 21, a memory 22, a speaker 23, and a microphone 24. The microphone 24 may be provided only in the main earphone 200A, or may be provided in both the main earphone 200A and the secondary earphone 200B.

[0019] The communication unit 20 includes an input unit 20A and an output unit 20B. The input unit 20A receives information transmitted from an external terminal such as the main smartphone 210 or the secondary smartphone 220. The output unit 20B transmits a signal to the external terminal such as the main smartphone 210 or the secondary smartphone 220 notifying that reception has been completed, or a signal to notify that reception was not possible.

[0020] The processor 21 is configured using, for example, a central processing unit (hereinafter referred to as "CPU") or a field programmable gate array (hereinafter referred to as "FPGA"), and performs various processes and controls in cooperation with the memory 22. Specifically, the processor 21 references the programs and data stored in the memory 22 and executes the programs to realize the functions of the wireless earphone 200. In particular, the processor 21 executes processes for the main earphone 200A and the secondary earphone 200B, which will be described later with reference to FIGS. 3 and 4.

[0021] The memory 22 includes, for example, a random access memory (hereinafter referred to as "RAM") as a work memory used when the processor 21 executes each process, and a storage for storing programs and data that define the operation of the processor 21. The RAM temporarily stores data or information generated or acquired by the processor 21. The storage stores programs that define the operation of the processor 21. These programs include programs for executing control processes for the main earphone 200A and the sub earphone 200B, which will be described later with reference to FIGS. 3 and 4.

[0022] Speaker 23 converts audio information received by the wireless earphone 200 from a master device such as the main smartphone 210 or sub-smartphone 220 into sound audible to the user and outputs it.

[0023] The microphone 24 is provided in either the main earphone 200A or the sub-earphone 200B, or both. The microphone 24 picks up speech based on the user's utterances using the wireless earphone 200, converts it into an audio signal, and outputs the converted audio signal to the processor 21.

[0024] Next, the control method for the wireless earphone 200 will be described. Figure 3 is a follow diagram showing an example of the control of the main earphone 200A according to this embodiment. Figure 4 is a follow diagram showing an example of the control of the secondary earphone 200B according to this embodiment.

[0025] First, we will explain the main earphone 200A that communicates with both the main smartphone 210 and the secondary smartphone 220. As shown in Fig. 3, the main earphone 200A establishes communication with the secondary earphone 200B via the intra-earphone network 201 (St1). That is, the intra-earphone network 201 connects the main earphone 200A and the secondary earphone 200B so that they can communicate with each other.

[0026] The main earphone 200A establishes a Bluetooth communication link with the main smartphone 210 (St2). The main earphone 200A sets the main smartphone 210 as the other party of voice communication (St3). That is, the communication unit 20 of FIG. 2 enables the main earphone 200A to communicate with the main smartphone 210, and sets voice communication with the main smartphone 210 to be prioritized over the secondary smartphone 220 (described later). Note that voice communication here is not limited to voice but also refers to communication of information related to sound. The main earphone 200A notifies the secondary earphone 200B of information about the link destination of the main smartphone 210 (connection information with the main smartphone 210, such as an address) (St4). This enables the secondary earphone 200B to receive information transmitted from the main smartphone 210.

[0027] The main earphone 200A establishes a Bluetooth communication link with the secondary smartphone 220B (St5). In other words, the communication unit 20 in Figure 2 enables communication with the secondary smartphone 220B.

[0028] The main earphone 200A receives the audio information transmitted from the main smartphone 210 (St6). Audio information is not limited to voice but is information related to sound, and is data communicated somewhere in the 12-slot cycle as shown in Fig. 5. Details will be described later.

[0029] The main earphone 200A determines whether the received audio information is the end of the audio frame (the 12th slot in FIG. 5) (St7).

[0030] If the main earphone 200A determines in step St7 that the received audio information is the end of the audio frame (S7, YES), it sets the main smartphone 210 as the communication partner and notifies the secondary earphone 200B of information about the link destination of the main smartphone 210 (St8).

[0031] If the main earphone 200A determines in step St7 that the received audio information is not the end of the audio frame (St7, NO), it determines whether the current communication partner is the secondary smartphone 220 (St9).

[0032] If the main earphone 200A determines in step St9 that the current communication partner is the secondary smartphone 220 (St9, YES), the received audio information is not the end of the audio frame, so the main earphone 200A continues communication with the secondary smartphone 220 (St10). The main earphone 200A returns to the processing of step St7.

[0033] If the main earphone 200A determines in step St9 that the current communication partner is not the secondary smartphone 220 (i.e., the current communication partner is the main smartphone 210) (St9, NO), it receives the audio information transmitted from the main smartphone 210 (St11).

[0034] The main earphone 200A determines whether or not the audio information transmitted from the main smartphone 210 has been successfully received (St12).

[0035] When the main earphone 200A determines in step St12 that the audio information transmitted from the main smartphone 210 has been successfully received (St12, YES), it omits transmitting a response signal notifying the main smartphone 210 of successful reception (reception completion) of the audio information (St13). As a result, the main smartphone 210 continues to transmit the same audio information to the main earphone 200A within the same audio frame.

[0036] Since the primary earphone 200A has completed receiving the audio information transmitted from the primary smartphone 210, it sets the secondary smartphone 220 as the communication partner in order to receive the audio information transmitted from the secondary smartphone 220 during the remaining time of the audio frame (St14).

[0037] If the main earphone 200A determines in step St12 that the audio information transmitted from the main smartphone 210 has not been successfully received (St12, NO), it generates a negative response notifying that the audio information has not been successfully received and transmits it to the main smartphone 210 (St15). This allows the main earphone 200A to request the main smartphone 210 to transmit audio information until the audio information is successfully received, and allows the main earphone 200A to receive the audio information.

[0038] Next, we will explain the operating procedure of the secondary earphone 200B, which communicates with the main smartphone 210.

[0039] As shown in Figure 4, first, the secondary earphone 200B establishes a Bluetooth communication link with the primary earphone 200A (St21).

[0040] The secondary earphone 200B receives audio information that the primary smartphone 210 is originally transmitting to the primary earphone 200A. That is, the secondary earphone 200B receives the audio information by eavesdropping on the audio information that the primary smartphone 210 is originally transmitting to the primary earphone 200A (St22). The secondary earphone 200B determines whether the received audio information is the end of an audio frame (St23).

[0041] If the secondary earphone 200B determines in step St23 that the received audio information is at the end of an audio frame (St23, YES), it removes the received mark indicating that it has received audio information from the main smartphone 210 in the current audio frame (St24).

[0042] If, in step St23, the sub-earphone 200B determines that the received audio information is not at the end of an audio frame (St23, NO), it determines whether a received mark has been set for the current audio frame (St25).

[0043] If, in step St25, the secondary earphone 200B determines that the received mark has been set for the current audio frame (St25, YES), it returns to the processing in step St23.

[0044] If the secondary earphone 200B determines in step St25 that the received mark has not been set in the current audio frame (NO in St25), it eavesdrops on the audio information being received by the primary earphone 200A and receives the audio information (St26).The secondary earphone 200B determines whether the audio information has been successfully received (St27).

[0045] If the secondary earphone 200B determines in step St27 that it has successfully received audio information (St27, YES), it sets a received mark for the current audio frame (St28).

[0046] If the secondary earphone 200B determines in step St27 that the reception of the audio information has not been successful (St27, NO), the process returns to step St23.

[0047] Next, Bluetooth communication between the master device (main smartphone 210) and the main earphone 200A and the sub earphone 200B will be described. Fig. 5 is a diagram for explaining an example of communication between the master device and the main earphone and the sub earphone in a comparative example. Fig. 6 is a diagram for explaining an example of communication between the master device and the main earphone and the sub earphone according to this embodiment.

[0048] First, a comparative example of this embodiment will be described. When the response as to whether or not the audio information can be received in Fig. 3 is omitted (step St13), and when eavesdropping in Fig. 4 (step St22) is not performed, when audio information is transmitted from the main smartphone 210 that is the master device, the main earphone 200A normally transmits a negative acknowledgement (NAK) to the main smartphone 210 if the audio information cannot be received, and transmits an acknowledgement (ACK) to the main smartphone 210 if the audio information can be received.

[0049] When the primary smartphone 210 receives the acknowledgement (ACK), it does not transmit any more audio information within the same audio frame (12 slots in FIGS. 5 and 6).The secondary earphone 200B then receives the audio information being received by the primary earphone 200A by eavesdropping on it.

[0050] At this time, the secondary earphone 200B is eavesdropping on the audio information transmitted by the primary earphone 200A, so the primary earphone 200A cannot confirm whether the secondary earphone 200B has completed reception. Therefore, even if the primary earphone 200A has successfully received the audio information transmitted from the primary smartphone 210, the primary earphone 200A sends back a negative acknowledgement (NAK) multiple times (e.g., three times) to the primary smartphone 210, causing the primary smartphone 210 to transmit the same audio information multiple times, thereby allowing the secondary earphone 200B to receive the audio information transmitted from the primary smartphone 210 to the primary earphone 200A. In this way, the primary earphone 200A controls the transmission of audio information performed by the primary smartphone 210 so that the secondary earphone 200B can receive the audio information more reliably.

[0051] However, when such control is executed, even if the main earphone 200A itself has completed receiving the audio information, the main earphone 200A needs to receive the same audio information from the main smartphone 210 multiple times in order to reliably transmit the audio information to the secondary earphone 200B. This reduces the time margin (time period T121=time period T111, time period T122=time period T112) for the main earphone 200A to receive control information from the secondary smartphone 220.

[0052] However, in reality, the time period T131 from when the secondary earphone 200B finishes receiving the audio information transmitted from the primary earphone 200A until the end of the audio frame can be the time it takes to receive the control information transmitted from the secondary smartphone 220, which is inefficient.

[0053] 6, in this embodiment, even if the main earphone 200A completes receiving the audio information, it does not transmit an acknowledgement (ACK) to the main smartphone 210. As a result, the main smartphone 210 continues to repeatedly transmit the audio information to the main earphone 200A during the audio frame based on the number of retransmissions of the audio information set in the main smartphone 210.

[0054] Even if the secondary earphone 200B fails to receive the audio information, the primary smartphone 210 continues to send it to the primary earphone 200A, providing it with an opportunity to receive the information again, and reception may be completed at the timing when reception is successful. With this configuration, when one wireless earphone connects to multiple master devices and attempts to receive information from each of them, it is possible to ensure enough time (for example, time periods T221 and T222) to receive information from the secondary smartphone 220, and it is possible to efficiently receive information from both master devices.

[0055] As described above, the control method for the wireless earphone 200 in the present disclosure is a control method for the wireless earphone 200 that is connected to each of the first terminal (main smartphone 210) and the second terminal (secondary smartphone 220) and has the main earphone 200A and the secondary earphone 200B, and when the main earphone 200A receives information from the first terminal (main smartphone 210) within a predetermined unit time (audio frame, i.e., 12 slots in FIG. 6), it does not send back a signal (acknowledgment (ACK)) indicating completion of reception to the first terminal (main smartphone 210), but receives information from the second terminal (secondary smartphone 220) during the remaining time (time slots T221, T222) of the predetermined time (audio frame), and the secondary earphone 200B receives information sent from the first terminal (main smartphone 210) to the main earphone 200A within the predetermined time (audio frame).

[0056] As a result, when one wireless earphone is connected to multiple master devices and attempts to receive audio information from one master device (in this disclosure, the primary smartphone 210) and control information from another master device (in this disclosure, the secondary smartphone 220), it is possible to ensure sufficient time (time periods T221, T222) to receive the control information from the secondary smartphone 220, thereby making it possible to more efficiently receive the audio information transmitted from both master devices.

[0057] The communication system 100 also includes a first terminal (primary smartphone 210) and a second terminal (secondary smartphone 220), and a primary earphone 200A and a secondary earphone 200B connected to the first terminal (primary smartphone 210) and the second terminal (secondary smartphone 220), respectively. When the primary earphone 200A receives information from the first terminal (primary smartphone 210) within a predetermined unit time (audio frame), it does not send back a signal (acknowledgment (ACK)) indicating completion of reception to the first terminal (primary smartphone 210), but receives information from the second terminal (secondary smartphone 220) during the remaining time (time slots T221, T222) of the predetermined time (audio frame), and the secondary earphone 200B receives information sent from the first terminal (primary smartphone 210) to the primary earphone 200A within the predetermined time (audio frame).

[0058] This ensures that when a single wireless earphone connects to multiple master devices and attempts to receive information from each, it can secure sufficient time (time zones T221, T222) to receive control information from the secondary smartphone 220, allowing for efficient reception of information from both master devices.

[0059] The wireless earphone 200 is a wireless earphone 200 that connects to each of a first terminal (primary smartphone 210) and a second terminal (secondary smartphone 220), and includes a primary earphone 200A that, upon receiving information from the first terminal (primary smartphone 210) within a predetermined unit time (audio frame), receives information from the second terminal (secondary smartphone 220) for the remaining time (audio frame) of the predetermined time without sending back a signal (acknowledgment (ACK)) indicating completion of reception to the first terminal (primary smartphone 210), and a secondary earphone 200B that receives information sent from the first terminal (primary smartphone 210) to the primary earphone 200A within the predetermined time (audio frame).

[0060] This ensures that when a single wireless earphone connects to multiple master devices and attempts to receive information from each, it can secure sufficient time (time zones T221, T222) to receive control information from the secondary smartphone 220, allowing for efficient reception of information from both master devices.

[0061] The communication system 100 according to this embodiment described above has been explained in the example where two terminals (a primary smartphone 210 and a secondary smartphone 220) are connected to one wireless earphone. However, the number of terminals that can be connected to the wireless earphone in a communication-enabled manner is not limited to two; for example, there may be three or more.

[0062] In such cases, the wireless earphone prioritizes communication with the terminal receiving voice information from a voice call, and receives control information from the other terminals. Specifically, the wireless earphone receives voice information from the first terminal among N (N: an integer of 3 or more) terminals that are connected and capable of communication, and receives control signals from the second to the Nth terminals in between receiving this voice information. The wireless earphone may determine the priority order for receiving control signals from the second to the Nth terminals and receive the control signals in that priority order, or it may receive control signals from the second to the Nth terminals in any order.

[0063] (Addendum) The above description of each embodiment discloses the following techniques.

[0064] (Technology 1) A control method for a communication terminal (wireless earphone 200) comprising a main communication terminal (main earphone 200A) and a sub-communication terminal (sub-earphone 200B), which is connected to a first terminal (main smartphone 210) that transmits first information (voice information) and one or more second terminals (sub-smartphones 220) that transmit second information (control information), When the main communication terminal (main earphone 200A) receives the first information (voice information) transmitted from the first terminal (main smartphone 210) within a predetermined unit time (voice frame), it omits sending a signal indicating the completion of reception (acknowledgment (ACK)) to the first terminal (main smartphone 210), and receives the second information (control information) transmitted from the second terminal (sub-smartphone 220) for the remainder of the predetermined unit time (voice frame). The sub-communication terminal (sub-earphone 200B) receives the first information transmitted from the first terminal (main smartphone 210) to the main communication terminal (main earphone 200A) within the predetermined unit time (voice frame). A method for controlling a communication terminal (wireless earphone 200). This configuration allows the wireless earphone 200 to efficiently receive information from each master device when it connects to each of multiple master devices (primary smartphone 210 and secondary smartphone 220) and attempts to receive information transmitted from each device.

[0065] (Technology 2) The main communication terminal (main earphone 200A) communicates with the sub communication terminal (sub earphone 200B). A control method for a communication terminal (wireless earphone 200) according to (Technology 1). This configuration allows the wireless earphone 200 to efficiently receive information from each master device when connecting to multiple master devices and attempting to receive information from each of them.

[0066] (Technology 3) The main communication terminal (main earphone 200A) transmits connection information between the main communication terminal (main earphone 200A) and the first terminal (main smartphone 210) to the sub communication terminal (sub earphone 200B). A control method for a communication terminal (wireless earphone 200) according to (Technical 2). This configuration makes it easy for the wireless earphone 200 to efficiently receive audio information from each master device when connecting to multiple master devices and attempting to receive audio information from each of them.

[0067] (Technology 4) a first terminal (main smartphone 210) that transmits first information (audio information); one or more second terminals (secondary smartphones 220) that transmit second information (control information); A communication system 100 comprising a main communication terminal (main earphone 200A) and a sub-communication terminal (sub-earphone 200B), which are connected to the first terminal (main smartphone 210) and the second terminal (sub-smartphone 220), When the main communication terminal (main earphone 200A) receives the first information (voice information) transmitted from the first terminal (main smartphone 210) within a predetermined unit time (voice frame), it omits sending a signal indicating the completion of reception (acknowledgment (ACK)) to the first terminal (main smartphone 210) and receives the second information (control information) transmitted from the second terminal (sub-smartphone 220) for the remainder of the predetermined unit time (voice frame). The sub-communication terminal (sub-earphone 200B) receives the first information transmitted from the first terminal (main smartphone 210) to the main communication terminal (main earphone 200A) within the predetermined unit time (voice frame). Communication system 100. This configuration allows the communication system 100 to efficiently receive information from each master device when a single wireless earphone attempts to connect to multiple master devices and receive information from each of them.

[0068] (Technology 5) The first terminal (main smartphone 210) repeatedly transmits the same signal (negative response (NAK)) to the main communication terminal (main earphone 200A) for the duration of the predetermined unit time (voice frame). The communication system 100 according to (Technical 4). This configuration allows the communication system 100 to receive information transmitted from both master devices more efficiently and reliably when a single wireless earphone connects to multiple master devices and attempts to receive information from each of them.

[0069] (Technology 6) A communication terminal (wireless earphone 200) that connects to a first terminal (main smartphone 210) that transmits first information (voice information) and one or more second terminals (sub-smartphones 220) that transmit second information (control information), When the main communication terminal (main earphone 200A) receives the first information (voice information) transmitted from the first terminal (main smartphone 210) within a predetermined unit time (voice frame), it omits sending a signal indicating the completion of reception (acknowledgment (ACK)) to the first terminal (main smartphone 210) and receives the second information (control information) transmitted from the second terminal (sub-smartphone 220) for the remainder of the predetermined unit time (voice frame), The system includes a sub-communication terminal (sub-earphone 200B) that receives the first information transmitted from the first terminal (main smartphone 210) to the main communication terminal (main earphone 200A) within the predetermined unit time (voice frame), Communication terminal (wireless earphone 200). This configuration allows the wireless earphone 200 to more efficiently receive information from each master device when connecting with each of multiple master devices (primary smartphone 210 and secondary smartphone 220) and attempting to receive information transmitted from each device.

[0070] Although various embodiments have been described above with reference to the attached drawings, this disclosure is not limited to such examples. It will be clear to those skilled in the art that various modifications, alterations, substitutions, additions, deletions, and equivalents can be conceived within the scope of the claims, and these will also be understood to fall within the technical scope of this disclosure. Furthermore, the components of the various embodiments described above can be combined arbitrarily without departing from the spirit of the invention. [Industrial Applicability]

[0071] This disclosure is useful as a method for controlling a communication terminal, a communication system, and a communication terminal that can efficiently receive information transmitted from each master device when a single communication terminal is connected to multiple master devices and attempts to receive information from each of them. [Explanation of symbols]

[0072] 100 Communication Systems 200 Wireless Earphones 200A Main Earphone 200B Secondary Earphone 20 Communications Department 20A input section 20B output section 21 processors 22 Memory 23 Speaker 201 Earphone internal network 210 Main Smartphone 220 Secondary Smartphone

Claims

1. A control method for a communication terminal including a main communication terminal and a sub-communication terminal, each connected to a first terminal that transmits first information and one or more second terminals that transmit second information, comprising: when the master communication terminal receives the first information transmitted from the first terminal within a predetermined unit time, it omits transmitting a signal indicating completion of reception to the first terminal and receives the second information transmitted from the second terminal during the remaining time of the predetermined unit time; the sub-communication terminal receives the first information transmitted from the first terminal to the main communication terminal within the predetermined unit time; A method for controlling a communication terminal.

2. The main communication terminal communicates with the sub-communication terminal. A method for controlling a communication terminal according to claim 1.

3. the master communication terminal transmits connection information between the master communication terminal and the first terminal to the sub-communication terminal; The method for controlling a communication terminal according to claim 2.

4. a first terminal that transmits first information; one or more second terminals that transmit second information; A communication system including a main communication terminal and a sub-communication terminal connected to each of the first terminal and the second terminal, when the master communication terminal receives the first information transmitted from the first terminal within a predetermined unit time, it omits transmitting a signal indicating completion of reception to the first terminal and receives the second information transmitted from the second terminal during the remaining time of the predetermined unit time; the sub-communication terminal receives the first information transmitted from the first terminal to the main communication terminal within the predetermined unit time; Communication system.

5. the first terminal repeatedly transmits the same signal to the master communication terminal during the predetermined unit time; The communication system according to claim 4.

6. A communication terminal connected to a first terminal that transmits first information and one or more second terminals that transmit second information, a master communication terminal that, when receiving the first information transmitted from the first terminal within a predetermined unit time, omits transmitting a signal indicating completion of reception to the first terminal and receives the second information transmitted from the second terminal during the remaining time of the predetermined unit time; a sub-communication terminal that receives the first information transmitted from the first terminal to the main communication terminal within the predetermined unit time, Communications terminal.

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