Earphone device, operation method thereof and charging box

Abstract

The invention provides an earphone device, an operation method thereof and a charging box. The earphone device comprises a charging box, a Bluetooth earphone, and a micro control unit (MCU). The charging box is provided with a first wireless signal transceiver, wherein the first wireless signal transceiver is configured to transmit and receive a first wireless signal. The Bluetooth earphone is separably accommodated in the charging box and is electrically connected with the charging box. The Bluetooth earphone is configured to receive a Bluetooth wireless signal or a first wireless signal emitted by the charging box. The micro control unit (MCU) is configured in the charging box to provide a control signal so as to control connection and charging of the Bluetooth earphone.

Description

Technical Field

[0001] The present invention relates to a headset device, an operation method thereof, and a charging case, and in particular to a headset device with multiple reception modes, an operation method thereof, and a charging case.

Background Art

[0002] In recent years, Bluetooth headset devices have been widely welcomed in the market due to the advantages of being free from the restraint of headphone cables, enabling remote listening, and having high-quality sound similar to that of wired headphones. However, Bluetooth headset devices have the defect of time delay of audio relative to video. Among existing Bluetooth headset devices, even the AirPods produced by Apple have a delay rate as high as 200 milliseconds. Such a delay rate is imperceptible when listening to music, but when used for audio playback accompanied by video such as watching movies, playing video games, and video calls, it will cause out-of-sync video and audio, making the user feel uncomfortable. Although the recently launched realme Buds series has developed an e-sports mode to reduce the delay, the delay rate can only be as low as 120 milliseconds, still much worse than the 10-millisecond delay rate of wired headphones. Therefore, developing Bluetooth headset devices with low latency is one of the main goals of current Bluetooth wireless technology.

[0003] In addition, the charging case of traditional Bluetooth headset devices has no other functions except for storing and charging the Bluetooth headset. If the space of the charging case can be utilized to incorporate other components to improve the limitations of existing Bluetooth headset devices, it is expected to solve the problems of high latency and even more other defects of existing Bluetooth headset devices.

[0004] In view of the deficiencies in the prior art, the applicant of the present invention, through careful experiments and research, and with perseverance, finally conceived the present invention, and overcame the deficiencies of the prior art by combining other wireless technologies and incorporating other wireless signal transceivers into the charging case. The following is a brief description of the present invention.

Summary of the Invention

[0005] The main object of the present invention is to provide a headset device, an operation method thereof, and a charging case to reduce the delay rate when an electronic device performs e-sports games and video and audio playback, and avoid out-of-sync video and audio or more defects of existing Bluetooth headset devices.

[0006] According to the above concept, the present invention provides a headset device, including a charging case, a Bluetooth headset, and a microcontroller unit (MCU). The charging case has a first wireless signal transceiver, wherein the first wireless signal transceiver is configured to transmit and receive a first wireless signal. The Bluetooth headset is detachably accommodated in the charging case and electrically connected to the charging case. The Bluetooth headset is configured to receive a Bluetooth wireless signal or the first wireless signal emitted by the charging case. The microcontroller unit (MCU) is configured in the charging case to provide a control signal to control the connection and charging of the Bluetooth headset.

[0007] According to the above concept, the present invention provides a method for operating the above-mentioned headphone device, wherein the headphone device is electrically connected to an electronic device, and the method includes: playing audio by the electronic device and transmitting the audio to the charging case via a transmission line; receiving the audio by the charging case, transmitting a first wireless signal corresponding to the audio, and transmitting it to the Bluetooth headset; and receiving the first wireless signal by the Bluetooth headset to play the audio.

[0008] A method for operating the above-mentioned headphone device, wherein the headphone device is electrically connected to a first electronic device or a second electronic device, the first electronic device transmits a first Bluetooth wireless signal, and the second electronic device transmits a second Bluetooth wireless signal, and the method includes: playing audio by the first electronic device and transmitting the audio to the charging case via a transmission line; receiving the audio by the charging case and transmitting a first wireless signal corresponding to the audio; playing a second audio by the second electronic device and transmitting a second Bluetooth wireless signal corresponding to the second audio; and the Bluetooth headset preferentially receiving the second Bluetooth wireless signal to play the second audio.

[0009] According to the above concept, the present invention provides a method for operating another headphone device, wherein the headphone device is electrically connected to an electronic device, and the method includes: playing audio by the electronic device and transmitting the audio to the charging case via a transmission line; receiving the audio by the charging case, transmitting a first wireless signal and / or a second wireless signal corresponding to the audio, and transmitting it to the Bluetooth headset; and the Bluetooth headset preferentially receiving the first wireless signal to play the audio, wherein: when the Bluetooth headset cannot receive the first wireless signal, receiving the second wireless signal to play the audio; and when the audio played by the electronic device cannot be transmitted to the charging case, the electronic device transmits a Bluetooth wireless signal corresponding to the audio, and the Bluetooth headset receives the Bluetooth wireless signal to play the audio.

[0010] According to the above concept, the present invention provides a charging case for a pair of Bluetooth headsets, including a case body, a battery, a first wireless signal transceiver, a circuit device, and a micro control unit (MCU). The case body is configured to detachably accommodate the Bluetooth headsets. The battery is disposed in the case body for charging the Bluetooth headsets. The first wireless signal transceiver is disposed in the case body. The circuit device is disposed in the case body and is electrically connected to the battery and the first wireless signal transceiver. The circuit device is configured to transmit audio to the first wireless signal transceiver, so that the first wireless signal transceiver transmits a first wireless signal corresponding to the audio. The micro control unit is configured to provide a control signal to control the connection and charging of the Bluetooth headsets.

[0011] Therefore, the present invention provides a variety of headphone devices, their operation methods, and their charging cases, which solve the core problems and other defects of the existing Bluetooth headset devices that cannot play e-sports games and have out-of-sync audio and video.

Description of the Drawings

[0012] The above objects and advantages of the present invention will become more readily apparent to those of ordinary skill in the art after referring to the following detailed description and the accompanying drawings.

[0013] Figure 1 : is a schematic diagram of a headphone device according to a first preferred embodiment contemplated by the present invention;

[0014] Figure 2 : is a schematic diagram of a headphone device according to a second preferred embodiment contemplated by the present invention;

[0015] Figure 3 : is a schematic diagram of a headphone device according to a third preferred embodiment contemplated by the present invention;

[0016] Figure 4 : is a schematic diagram of a headphone device according to a fourth preferred embodiment contemplated by the present invention;

[0017] Figure 5 : is a schematic diagram of a headphone device according to a fifth preferred embodiment contemplated by the present invention;

[0018] Figure 6 : is a schematic diagram of a headphone device according to a sixth preferred embodiment contemplated by the present invention; and

[0019] Figure 7 : is a schematic diagram of a headphone device according to a seventh preferred embodiment contemplated by the present invention.

Detailed Description of the Invention

[0020] The invention proposed in this case can be fully understood from the following embodiments, so that those of ordinary skill in the art can implement it accordingly. However, the implementation of this case is not limited to the following embodiments. Those of ordinary skill in the art can still deduce other embodiments based on the spirit of the disclosed embodiments, and all such embodiments should fall within the scope of the present invention.

[0021] Please refer to Figures 1 to 4, the headphone device 100 of the present invention includes: a charging case 1 and Bluetooth earphones 41, 42 that can be disposed in the charging case 1. The charging case 1 includes a case body 10 and a case cover (not shown in the figure) that is snap-fitted to the case body 10. The case body 10 of the charging case 1 includes a wireless signal transceiver 11, a battery 12, a micro control unit (MCU) 13, and a circuit device 16. The circuit device 16 includes a VBUS power line 161, a ground line 162, and differential signal lines 163, 164. The charging case 1 has a port 14 that can be connected to an electronic device or a power source 6 through a transmission line 3 to transmit its signal or power to the inside of the battery case 1. The wireless signal transceiver 11 transmits signals through the differential signal lines 163, 164. In a specific embodiment, the micro control unit (MCU) 13 is configured to provide a control signal to control the connection and charging of the Bluetooth earphones 41, 42. In a specific embodiment, the control signal can be a Universal Asynchronous Receiver / Transmitter (UART) control signal. In another specific embodiment, the control signal can be a Bluetooth control signal. In detail, the battery 12 and the micro control unit 13 can be electrically connected to the wireless signal transceiver 11 through the VBUS power line 161. The electronic device can be selectively a Bluetooth electronic device 2 or a non-Bluetooth electronic device 5, but their implementation methods are different. More specifically, the electronic device is a computer, a mobile phone, a tablet, a game console, etc. The implementation methods of the headphone device 100 connecting to the Bluetooth electronic device 2, the non-Bluetooth electronic device 5, and the power source 6 are described as follows.

[0022] Please refer to Figure 1 , which is a schematic diagram of the headphone device 100 of the first preferred embodiment conceived by the present invention. In Figure 1 , the charging case 1 is connected to the Bluetooth electronic device 2 through the transmission line 3. The power in the Bluetooth electronic device 2 will be transmitted to the charging case 1 through the transmission line 3, and then sequentially transmitted to the micro control unit 13 and the battery 12 through the VBUS power line 161 to charge the battery 12. In addition, when the Bluetooth electronic device 2 plays the first audio 21, the first audio 21 is transmitted to the charging case 1 through the transmission line 3, and then transmitted to the wireless signal transceiver 11 through the differential signal lines 163, 164 to trigger the wireless signal transceiver 11 inside the charging case 1 to emit a wireless signal 15. The wireless signal 15 is further transmitted to the Bluetooth earphones 41, 42 so that the Bluetooth earphones 41, 42 can communicate with the Bluetooth electronic device 2 to play the first audio 21. The method of communicating the Bluetooth electronic device 2 and the Bluetooth earphones 41, 42 through the wireless signal 15 can reduce the delay rate of the first audio 21 to less than 40 milliseconds, achieving a low-delay effect of the same order of magnitude as the delay rate (10 milliseconds) of a wired headphone device. The transmission of audio and video through the wireless signal 15 can avoid the problem of audio-video asynchronization in traditional headphone devices.

[0023] Please refer to Figure 2, which is a schematic diagram of the headphone device 100 according to the second preferred embodiment of the present invention concept. In Figure 2 , the Bluetooth electronic device 2 is not connected to the charging case 1 by the transmission line 3. When the Bluetooth electronic device 2 plays the first audio 21, the first audio 21 triggers the Bluetooth electronic device 2 to transmit the first Bluetooth wireless signal 22, and the first Bluetooth wireless signal 22 is further transmitted to the Bluetooth headsets 41, 42, so that the Bluetooth headsets 41, 42 are connected to the Bluetooth electronic device 2 to play the first audio 21. Thus, the inconvenience of carrying a transceiver with traditional wireless headphones is avoided.

[0024] According to all the above embodiments, when the user is performing activities with both video and audio, such as playing games, watching movies, video conferencing, etc., the Bluetooth electronic device 2 is connected to the charging case 1 by the connection line 3, and is connected to the Bluetooth headsets 41, 42 through the wireless signal 15 to avoid out-of-sync video and audio. At the same time, the Bluetooth electronic device 2 charges the charging case 1, so it is possible to charge while playing games to save the waiting time for charging; when the user is performing pure audio activities such as listening to music, making a voice call, etc., the Bluetooth electronic device 2 does not need to be connected to the charging case 1 by the connection line 3, and is connected to the Bluetooth headsets 41, 42 through the first Bluetooth wireless signal 22.

[0025] Please refer to Figure 3 , which is a schematic diagram of the headphone device 100 according to the third preferred embodiment of the present invention concept. In FIG. 3, the charging case 1 of the headphone device 100 is connected to the non-Bluetooth electronic device 5 by the transmission line 3. When the non-Bluetooth electronic device 5 plays the first audio 51, the first audio 51 is transmitted to the charging case 1 via the transmission line 3, and the first audio 51 is further transmitted to the wireless signal transceiver 11 through the differential signal lines 163, 164 to trigger the wireless signal transceiver 11 inside the charging case 1 to transmit the wireless signal 15, and the wireless signal 15 is further transmitted to the Bluetooth headsets 41, 42, so that the Bluetooth headsets 41, 42 are connected to the non-Bluetooth electronic device 5 to play the first audio 51.

[0026] The headphone device 100 of the present invention can connect the Bluetooth headsets 41, 42 and the non-Bluetooth electronic device 5 through the wireless signal 15. That is to say, the headphone device 100 of the present invention can also be used as a general wireless headphone on the non-Bluetooth electronic device 5.

[0027] According to all of the above embodiments, the Bluetooth headsets 41 and 42 in the headset device 100 of the present invention can receive the audio played by the electronic device in the following ways: (1) The electronic device transmits the audio to the charging case via a transmission line. After receiving the audio, the charging case emits a first wireless signal corresponding to the audio and transmits it to the Bluetooth headsets 41 and 42, and the Bluetooth headsets 41 and 42 receive the first wireless signal to play the audio; and (2) When the audio played by the electronic device cannot be transmitted to the charging case 1 via the transmission line, the electronic device emits a first Bluetooth wireless signal corresponding to the audio and transmits it to the Bluetooth headsets 41 and 42, and the Bluetooth headsets 41 and 42 receive the first Bluetooth wireless signal to play the audio.

[0028] Please refer to Figure 4 , which is a schematic diagram of the headset device 100 of the fourth preferred embodiment conceived by the present invention. In Figure 4 , the Bluetooth headset (not shown in the figure) is placed in the charging case 1, and the charging case 1 is connected to the power supply 6 through the transmission line 3. The power supply 6 passes through the port 14, and then sequentially passes through the micro control unit 13 and the battery 12 through the VBUS power line 161, so that the battery 12 charges the Bluetooth headset placed in the charging case 1.

[0029] The headset device 100 of the present invention can preferentially select the most suitable method to communicate with one of at least two electronic devices, and its implementation is described in the fifth to sixth preferred embodiments. Please refer to Figure 5 , which is a schematic diagram of the headset device 100 of the fifth preferred embodiment conceived by the present invention. In Figure 5 , the charging case 1 is connected to the Bluetooth electronic device 2 through the transmission line 3, and the Bluetooth headsets 41 and 42 are coupled to the mobile device 7 in a Bluetooth communication manner. When the Bluetooth electronic device 2 plays the first audio 21 and the mobile device 7 plays the second audio 71, the first audio 21 is transmitted to the charging case 1 via the transmission line 3, causing the charging case 1 to emit the wireless signal 15. The second audio 71 triggers the mobile device 7 to emit the second Bluetooth wireless signal 72. The Bluetooth headsets 41 and 42 will preferentially select to receive the second Bluetooth wireless signal 72. That is to say, when using the Bluetooth electronic device 2 (such as a laptop computer) for video and audio activities such as playing games, the Bluetooth electronic device 2 is connected to the charging case 1 with the connection line 3 to avoid out-of-sync video and audio. At the same time, if the mobile device 7 (such as a smart phone) rings and the user chooses to answer the call, the headset device 100 of the present invention will automatically switch to receive the call signal of the mobile device 7. After answering the call signal and hanging up the call, the second Bluetooth wireless signal 72 disappears, and the headset device 100 receives the wireless signal 15 and plays the first audio 21. The Bluetooth electronic device in this embodiment can also be replaced with a non-Bluetooth electronic device (such as a desktop computer).

[0030] Please refer to FIG. 6, which is a schematic diagram of the headphone device 100 according to the sixth preferred embodiment of the present invention. In FIG. 6, the charging case 1 is not connected to the Bluetooth electronic device 2 via the transmission line 3, but the Bluetooth headsets 41 and 42 are coupled to the Bluetooth electronic device 2 and the mobile device 7 via Bluetooth communication. When the Bluetooth electronic device 2 plays the first audio 21 and the mobile device 7 plays the second audio 71, the first audio 21 triggers the Bluetooth electronic device 2 to transmit the first Bluetooth wireless signal 22, and the second audio 71 triggers the mobile device 7 to transmit the second Bluetooth wireless signal 72. When the intensity of the first Bluetooth wireless signal 22 is greater than that of the second Bluetooth wireless signal 72, the Bluetooth headsets 41 and 42 select to receive the first Bluetooth wireless signal 22 to play the first audio 21. Conversely, when the intensity of the first Bluetooth wireless signal 22 is less than that of the second Bluetooth wireless signal 72, the Bluetooth headsets 41 and 42 select to receive the second Bluetooth wireless signal 72 to play the second audio 71.

[0031] According to all the above embodiments, when the first electronic device and the second electronic device play audio simultaneously, where the first electronic device plays the first audio and the second electronic device plays the second audio, the Bluetooth headsets 41 and 42 in the headphone device 100 of the present invention can receive the played audio in the following ways: (1) When the second electronic device transmits the second Bluetooth wireless signal corresponding to the second audio and the charging case transmits the first wireless signal corresponding to the first audio simultaneously, the Bluetooth headsets 41 and 42 preferentially receive the second Bluetooth wireless signal to play the second audio; (2) When the first electronic device transmits the first Bluetooth wireless signal corresponding to the first audio and the second electronic device transmits the second Bluetooth wireless signal corresponding to the second audio simultaneously, and the intensity of the first Bluetooth wireless signal is greater than that of the second Bluetooth wireless signal, the Bluetooth headsets 41 and 42 preferentially receive the first Bluetooth wireless signal to play the first audio; and (3) When the first electronic device transmits the first Bluetooth wireless signal corresponding to the first audio and the second electronic device transmits the second Bluetooth wireless signal corresponding to the second audio simultaneously, and the intensity of the first Bluetooth wireless signal is less than that of the second Bluetooth wireless signal, the Bluetooth headsets 41 and 42 preferentially receive the second Bluetooth wireless signal to play the second audio.

[0032] In another embodiment, the headphone device of the present invention may have at least two wireless signal transceivers, enabling the Bluetooth headset to select the most suitable way to communicate with the electronic device according to the usage state, and its implementation is described in the seventh preferred embodiment. Please refer to Figure 7, which is a schematic diagram of the headset device 800 of the seventh preferred embodiment of the inventive concept. The headset device 800 of the present invention includes: a charging case 8 and Bluetooth headsets 91, 92, wherein in addition to a first wireless signal transceiver 81, the case 80 of the charging case 8 further includes a second wireless signal transceiver 87. The second wireless signal transceiver 87 is electrically connected to the first wireless signal transceiver 81, the battery 82, the micro control unit (MCU) 83, and the port 84 through a circuit device 86, wherein the circuit device 86 includes a VBUS power line 861, a ground line 862, and differential signal lines 863, 864, and signals are transmitted through the differential signal lines 863, 864. The charging case 8 may further include a case cover (not shown in the figure) that is buckled to the case 80. In a specific embodiment, the micro control unit (MCU) 83 is configured to provide a control signal to control the connection and charging of the Bluetooth headsets 85, 88. In a specific embodiment, the control signal may be a universal asynchronous receiver / transmitter (UART) control signal. In another specific embodiment, the control signal may be a Bluetooth control signal.

[0033] In Figure 7 , the port 84 of the charging case 8 is connected to the Bluetooth electronic device 2 by a connecting line 3. When the Bluetooth electronic device 2 plays the first audio 21 and the distance between the Bluetooth headsets 91, 92 of the headset device 800 of the present invention and the Bluetooth electronic device 2 is less than 10 meters, the Bluetooth headsets 91, 92 communicate with the Bluetooth electronic device 2 through the wireless signal 85 transmitted by the first wireless signal transceiver 81. When the distance between the Bluetooth headsets 91, 92 of the headset device 800 and the Bluetooth electronic device 2 is greater than 10 meters, the Bluetooth headsets 91, 92 can communicate with the Bluetooth electronic device 2 through the second wireless signal 88 (such as a Kleer wireless signal) transmitted by the second wireless signal transceiver 87 (such as a Kleer wireless signal transceiver). Generally speaking, the 2.4GHz wireless signal 85 has the disadvantage of being unable to be transmitted over a long distance, and the current transmission distance of the Kleer signal can reach 100 meters. Therefore, this embodiment makes use of the characteristic of the second wireless signal 88 that can be transmitted over a long distance, so that the headset device 800 of the present invention will not lose communication when the distance between the Bluetooth headsets 91, 92 and the Bluetooth electronic device 2 is relatively far. The Bluetooth electronic device in this embodiment can also be replaced by a non-Bluetooth electronic device. In addition, similar to the headset device 100 of the previous embodiment, the port 84 of the charging case 8 may not be connected to the Bluetooth electronic device 2 by the connecting line 3, and the Bluetooth headsets 91, 92 are used alone to receive audio through the Bluetooth wireless signal.

[0034] According to all of the above embodiments, the headset device 800 of the present invention may include a plurality of wireless signal transceivers. At this time, the Bluetooth headsets 91 and 92 can receive the audio played by the electronic device in the following ways: (1) The electronic device transmits the audio to the charging case via a transmission line. After receiving the audio, the charging case emits a first wireless signal and / or a second wireless signal corresponding to the audio, and transmits them to the Bluetooth headsets 91 and 92. The Bluetooth headsets 91 and 92 preferentially receive the first wireless signal to play the audio; (2) When the Bluetooth headsets 91 and 92 cannot receive the first wireless signal, they receive the second wireless signal to play the audio; and (3) When the audio played by the electronic device cannot be transmitted to the charging case, the electronic device emits a Bluetooth wireless signal corresponding to the audio, and the Bluetooth headsets 91 and 92 receive the Bluetooth wireless signal to play the audio.

[0035] In addition to the above second wireless signal transceiver, those of ordinary skill in the art may also select wireless signal transceivers of other different communication protocols according to actual needs and incorporate them into the charging case as the second wireless signal transceiver, or set three or more wireless signal transceivers of different communication protocols in the charging case. The wireless signal transceivers in the charging case can be any combination, not limited to the above embodiments. However, any combination of wireless signal transceivers in the charging case stems from the spirit of the present invention and falls within the scope disclosed by the present invention.

[0036] The internal circuit device of the charging case in all of the above embodiments is only for conveniently explaining the internal power and signal conduction methods of the headset device claimed by the present invention, and should not be construed as a limitation to the present invention.

[0037] The wireless signal transceivers in all of the above embodiments can be replaced with wireless signal transceivers operating in the 2.4 GHz, 5 GHz, or other frequency bands (not shown in the figures), so that the wireless signals emitted by the charging case are not limited to those in the 2.4 GHz, 5 GHz, or other frequency bands.

[0038] In summary, the present invention can indeed solve the long-standing problem of high latency in conventional Bluetooth headset devices by setting wireless signal transceivers in the charging case. Furthermore, by setting various combinations of wireless signal transceivers in the charging case, other drawbacks of traditional Bluetooth headset devices can be solved or new functions can be added.

[0039] The present invention is a truly remarkable innovative invention with great industrial value and is accordingly filed for application in accordance with the law. In addition, the present invention can be modified by those of ordinary skill in the art, but it does not depart from the scope to be protected as defined in the appended patent application scope.

[0040]

Symbol Explanation

[0041] 100: Headset device

[0042] 1: Charging case

[0043] 10: Case body

[0044] 11: First wireless signal transceiver

[0045] 12: Battery

[0046] 13: Micro control unit

[0047] 14: Port

[0048] 15: Wireless signal

[0049] 16: Circuit device

[0050] 161: VBUS power line

[0051] 162: Ground wire

[0052] 163, 164: Differential signal lines

[0053] 2: Bluetooth electronic device

[0054] 21: First audio

[0055] 22: First Bluetooth wireless signal

[0056] 3: Transmission line

[0057] 41, 42: Bluetooth headset

[0058] 5: Non - Bluetooth electronic device

[0059] 51: First audio

[0060] 6: Power supply

[0061] 7: Mobile device

[0062] 71: Second audio

[0063] 72: Second Bluetooth wireless signal

[0064] 800: Headphone device

[0065] 8: Charging case

[0066] 80: Case body

[0067] 81: First wireless signal transceiver

[0068] 82: Battery

[0069] 83: Micro control unit

[0070] 84: Port

[0071] 85: Wireless signal

[0072] 86: Circuit device

[0073] 861: VBUS power line

[0074] 862: Ground wire

[0075] 863, 864: Differential signal lines

[0076] 87: Second wireless signal transceiver

[0077] 88: Second wireless signal

[0078] 91, 92: Bluetooth headphones

Claims

1. An earphone device, comprising: A charging case having a first wireless signal transceiver, wherein the first wireless signal transceiver is configured to transmit and receive a first wireless signal; A pair of Bluetooth earphones detachably accommodated in the charging case and electrically connected to the charging case, the pair of Bluetooth earphones being configured to receive Bluetooth wireless signals or the first wireless signal emitted by the charging case; And A micro control unit (MCU) configured in the charging case to provide control signals for controlling the connection and charging of the pair of Bluetooth earphones.

2. The earphone device according to claim 1, wherein the first wireless signal transceiver is configured to reduce the latency rate of the pair of Bluetooth earphones receiving audio.

3. The earphone device according to claim 1, wherein the charging case further has a battery for charging the pair of Bluetooth earphones.

4. The earphone device according to claim 1, wherein the charging case further has a second wireless signal transceiver configured to transmit and receive a second wireless signal having a communication protocol different from that of the first wireless signal, and at this time the micro control unit controls the pair of Bluetooth earphones to selectively receive the first wireless signal or the second wireless signal emitted by the charging case.

5. The earphone device according to claim 1, wherein the control signal is a universal asynchronous receiver / transmitter (UART) control signal.

6. The earphone device according to claim 1, wherein the control signal is a Bluetooth control signal.

7. A method of operating the earphone device according to claim 1, wherein the earphone device is electrically connected to an electronic device, and the method comprises: Playing audio by the electronic device and transmitting the audio to the charging case via a transmission line; Receiving the audio by the charging case, transmitting the first wireless signal corresponding to the audio, and transmitting it to the pair of Bluetooth earphones; and Receiving the first wireless signal by the pair of Bluetooth earphones to play the audio.

8. The method according to claim 7, wherein: When the audio played by the electronic device cannot be transmitted to the charging case via the transmission line, the electronic device transmits the Bluetooth wireless signal corresponding to the audio and transmits it to the pair of Bluetooth earphones; and Receiving the Bluetooth wireless signal by the pair of Bluetooth earphones to play the audio.

9. A method of operating the earphone device according to claim 1, wherein the earphone device is electrically connected to a first electronic device or a second electronic device, the first electronic device transmits a first Bluetooth wireless signal, the second electronic device transmits a second Bluetooth wireless signal, and the method comprises: Playing a first audio by the first electronic device and transmitting the first audio to the charging case via a transmission line; Receiving the first audio by the charging case and transmitting the first wireless signal corresponding to the first audio; Playing a second audio by the second electronic device and transmitting the second Bluetooth wireless signal corresponding to the second audio; and The pair of Bluetooth earphones preferentially receive the second Bluetooth wireless signal to play the second audio.

10. A method of operating the earphone device according to claim 4, wherein the earphone device is electrically connected to an electronic device, and the method comprises: Playing audio by the electronic device and transmitting the audio to the charging case via a transmission line; The charging case receives the audio, transmits the first wireless signal and / or the second wireless signal corresponding to the audio, and transmits them to the pair of Bluetooth earphones; And The pair of Bluetooth earphones preferentially receives the first wireless signal to play the audio, where: When the pair of Bluetooth earphones cannot receive the first wireless signal, it receives the second wireless signal to play the audio; And When the audio played by the electronic device cannot be transmitted to the charging case, the electronic device transmits a Bluetooth wireless signal corresponding to the audio, and the pair of Bluetooth earphones receives the Bluetooth wireless signal to play the audio.

11. A charging case for a pair of Bluetooth earphones, comprising: A case body configured to detachably accommodate the pair of Bluetooth earphones; A battery disposed in the case body for charging the pair of Bluetooth earphones; A first wireless signal transceiver disposed in the case body; A circuit device disposed in the case body and electrically connected to the battery and the first wireless signal transceiver, the circuit device being configured to transmit audio to the first wireless signal transceiver, enabling the first wireless signal transceiver to transmit and receive a first wireless signal corresponding to the audio; And A micro control unit (MCU) configured to provide a control signal to control the connection and charging of the pair of Bluetooth earphones.

12. The charging case according to claim 11, further comprising a second wireless signal transceiver electrically connected to the circuit device for transmitting and receiving a second wireless signal having a communication protocol different from that of the first wireless signal, and when the circuit device transmits the audio to the second wireless signal transceiver, the second wireless signal transceiver transmits and receives the second wireless signal corresponding to the audio, and at this time the micro control unit controls the pair of Bluetooth earphones to selectively receive the first wireless signal or the second wireless signal transmitted by the charging case.

13. The charging case according to claim 11, wherein the first wireless signal transceiver is configured to reduce the latency rate of the pair of Bluetooth earphones receiving the audio.

14. The earphone device according to claim 11, wherein the control signal is a Universal Asynchronous Receiver / Transmitter (UART) control signal.

15. The earphone device according to claim 11, wherein the control signal is a Bluetooth control signal.

Images