Earphone assembly

Abstract

The invention discloses an earphone assembly, and belongs to the technical field of electronic equipment. The earphone assembly comprises an earphone, and the earphone comprises a first loudspeaker; the digital-analog conversion module is used for outputting an audio driving signal; the first switching device is connected with the first loudspeaker and the digital-analog conversion module, and the first switching device comprises a first switching state and a second switching state; the accommodating box comprises an accommodating bin which is used for accommodating an earphone; the second loudspeaker is connected with the first switching device under the condition that the earphone is positioned in the accommodating bin; wherein under the condition that the first switching device is in the first switching state, the digital-to-analog conversion module is connected with the first loudspeaker so as to output an audio driving signal to the first loudspeaker; and when the earphone is located in the accommodating bin and the first switching device is in the second switching state, the digital-to-analog conversion module is connected with the second loudspeaker.

Description

Technical Field

[0001] This application belongs to the technical field of electronic devices, and particularly relates to a headphone assembly. Background Art

[0002] In related technologies, true wireless stereo (TWS) headphones generally include a headphone body and a headphone case. Among them, the headphone case only has the function of storing the headphones, and its function is relatively single. Summary of the Invention

[0003] This application aims to provide a headphone assembly that can solve the problem of the single function of the headphone case in related technologies.

[0004] In a first aspect, an embodiment of this application provides a headphone assembly, including:

[0005] A headphone, the headphone includes:

[0006] A first speaker;

[0007] A digital-to-analog conversion module, the digital-to-analog conversion module is used to output an audio drive signal;

[0008] A first switching device, the first switching device is connected to the first speaker and the digital-to-analog conversion module, and the first switching device includes a first switching state and a second switching state;

[0009] A receiving box, the receiving box includes:

[0010] A receiving bin, the receiving bin is used to receive the headphone;

[0011] A second speaker, when the headphone is located in the receiving bin, the second speaker is connected to the first switching device;

[0012] Wherein, when the first switching device is in the first switching state, the digital-to-analog conversion module is connected to the first speaker to output an audio drive signal to the first speaker; when the headphone is located in the receiving bin and the first switching device is in the second switching state, the digital-to-analog conversion module is connected to the second speaker to output an audio drive signal to the second speaker.

[0013] In the embodiment of this application, an independent speaker is provided on the receiving box of the headphone assembly, and a switching device is provided on the headphone. When the headphone is placed in the receiving box, the switching device can connect the digital-to-analog converter (DAC) of the headphone to the second speaker on the receiving box, so that the speaker on the receiving box can be driven to work by the headphone, enabling the receiving box to be used as an independent audio device in addition to storing the headphone, thus enriching the function of the headphone receiving box.

[0014] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. Description of the Drawings

[0015] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, where:

[0016] Figure 1 A schematic structural diagram of a headphone assembly showing some embodiments of the present application is shown;

[0017] Figure 2 A schematic circuit diagram of a headphone assembly showing some embodiments of the present application is shown;

[0018] Figure 3 A schematic diagram of signal transmission of a headphone assembly when two headphones are in place showing some embodiments of the present application is shown;

[0019] Figure 4 A schematic diagram of signal transmission of a headphone assembly when one headphone is in place showing some embodiments of the present application is shown.

[0020] Reference Numerals:

[0021] 10 Headphone assembly;

[0022] 100 Headphone, 102 First speaker, 104 Digital-to-analog conversion module, 1042 First conversion module, 1044 Second conversion module, 106 First switching device, 108 First connection part, 110 Wireless communication module,

[0023] 200 Accommodating box, 202 Accommodating chamber, 204 Second speaker, 2042 First-channel speaker, 2044 Second-channel speaker, 206 Second connection part, 208 Second switching device, 210 Controller, 212 Body, 214 Cover, 216 Sound cavity, 218 Battery, 220 Charging module. Detailed Description of the Embodiments

[0024] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for explaining the present application and should not be construed as limiting the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts fall within the scope of protection of the present application.

[0025] The terms "first" and "second" in the description and claims of this application may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after.

[0026] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this application.

[0027] In the description of this application, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

[0028] The following Figures 1 to 4 describes a headphone assembly according to an embodiment of this application.

[0029] In some embodiments of this application, a headphone assembly is provided. Figure 1 The structural schematic diagram of the headphone assembly of some embodiments of this application is shown. Figure 2 The circuit structural schematic diagram of the headphone assembly of some embodiments of this application is shown. As Figure 1 and Figure 2 shown, the headphone assembly 10 includes:

[0030] A headphone 100, and the headphone 100 includes:

[0031] A first speaker 102;

[0032] A digital-to-analog conversion module 104, and the digital-to-analog conversion module 104 is used to output an audio drive signal.

[0033] The first switching device 106 is connected to the first speaker 102 and the digital-to-analog conversion module 104. The first switching device 106 includes a first switching state and a second switching state;

[0034] The accommodating box 200 includes:

[0035] An accommodating bin 202 for accommodating the earphone 100;

[0036] A second speaker 204, which is connected to the first switching device 106 when the earphone 100 is located in the accommodating bin 202;

[0037] Wherein, when the first switching device 106 is in the first switching state, the digital-to-analog conversion module 104 is connected to the first speaker 102 to output an audio driving signal to the first speaker 102; when the earphone 100 is located in the accommodating bin 202 and the first switching device 106 is in the second switching state, the digital-to-analog conversion module 104 is connected to the second speaker 204 to output an audio driving signal to the second speaker 204.

[0038] In the embodiment of the present application, the earphone assembly 10 includes an earphone 100 and an accommodating box 200. Among them, the accommodating box 200 includes an accommodating bin 202 for accommodating the earphone 100. When the user wears and uses the earphone 100, the earphone 100 is located outside the accommodating bin 202. When the user puts the earphone 100 into the storage box, the earphone 100 is located in the accommodating bin 202.

[0039] The earphone 100 includes a first speaker 102 and a digital-to-analog conversion module 104. Among them, the first speaker 102 may include one or more electroacoustic elements. The digital-to-analog conversion module 104 is for digital attack and defense, which is used to convert an audio digital signal into an analog signal for output, and amplify the output analog signal through an internal power amplifier, and drive the first speaker 102 to emit sound through the amplified analog signal.

[0040] The accommodating box 200 includes an accommodating bin 202 and a second speaker 204. Among them, the accommodating bin 202 is used to accommodate the earphone 100. The second speaker 204 is a high-power electroacoustic element, and the power and sound pressure of the second speaker 204 are greater than those of the first speaker 102.

[0041] The earphone 100 is also provided with a first switching device 106. When the user wears the earphone 100, the first switching device 106 is in the first switching state, and the digital-to-analog conversion module 104 of the earphone 100 is connected to the first speaker 102. At this time, the audio driving signal output by the digital-to-analog conversion module 104 will drive the first speaker 102 to emit sound. At this time, the earphone assembly 10 operates in the normal earphone 100 mode.

[0042] When the user places the earphone 100 into the storage bin and turns on the "speaker mode", the first switching device 106 switches to the second switching state. At this time, the digital-to-analog conversion module 104 of the earphone 100 is connected to the second speaker 204. At this time, the audio signal output by the digital-to-analog conversion module 104 will drive the second speaker 204 to emit sound.

[0043] Exemplarily, corresponding contacts are provided on both the earphone 100 and the storage box. When the earphone 100 is placed in the storage bin, the contacts of the earphone 100 come into contact with the contacts of the storage box. When the first switching device 106 is in the second switching state, the driving signal output by the digital-to-analog conversion module 104 is transmitted through the contacts on the earphone 100 to the contacts on the earphone 100 box and finally transmitted to the second speaker 204.

[0044] Exemplarily, mating connectors are provided on the earphone 100 and the storage box. When the earphone 100 is placed in the storage bin, the connectors of the earphone 100 are plugged into the connectors of the storage box to form an air connection. When the first switching device 106 is in the second switching state, the driving signal output by the digital-to-analog conversion module 104 is transmitted to the second speaker 204 through the connectors.

[0045] In the embodiment of the present application, an independent speaker is provided on the storage box 200 of the earphone assembly 10, and a switching device is provided on the earphone 100. When the earphone 100 is placed in the storage box 200, the switching device can connect the digital-to-analog conversion module 104 (Digital-to-Analog Converter, DAC) of the earphone 100 to the second speaker 204 on the storage box 200, so as to drive the speaker on the storage box 200 to work through the earphone 100, enabling the storage box 200 to be used as an independent audio device in addition to storing the earphone 100, enriching the functions of the earphone 100 storage box 200.

[0046] In some embodiments of the present application, the earphone 100 further includes a first connection portion 108, and the storage box 200 further includes:

[0047] The second connection part 206 is arranged in the accommodation bin 202. When the earphone 100 is located in the accommodation bin 202, the first connection part 108 is connected to the second connection part 206, so that the second loudspeaker 204 is connected to the first switching device 106.

[0048] In the embodiment of the present application, the earphone 100 is provided with a first connection part 108, and the accommodation bin 202 of the accommodation box 200 is provided with a second connection part 206. When the earphone 100 is placed in the accommodation bin 202, a connection is formed between the first connection part 108 of the earphone 100 and the second connection part 206 in the accommodation bin 202, so as to drive the second loudspeaker 204 on the accommodation box through the audio driving signal output by the digital-to-analog conversion signal of the earphone 100.

[0049] Exemplarily, both the first connection part 108 and the second connection part 206 are contacts. When the earphone 100 is placed in the accommodation bin, the contacts on the earphone 100 are in contact with the contacts in the accommodation bin.

[0050] Exemplarily, the first connection part 108 and the second connection part 206 are mating connectors. For example, the first connection part 108 is a jack, and the second connection part 206 is a plug. When the earphone 100 is placed in the accommodation bin, the plug in the accommodation bin is inserted into the jack on the earphone 100.

[0051] In some embodiments of the present application, the second loudspeaker 204 includes a first-channel loudspeaker 2042 and a second-channel loudspeaker 2044. In the width direction of the accommodation box 200, the first-channel loudspeaker 2042 and the second-channel loudspeaker 2044 are respectively located at both ends of the accommodation box 200.

[0052] In the embodiment of the present application, as Figure 1 shown, Figure 1 the arrow A in shows the width direction of the accommodation box 200. In the width direction of the accommodation box 200, the second loudspeaker 204 specifically includes a first-channel loudspeaker 2042 and a second-channel loudspeaker 2044 arranged at both ends of the accommodation box 200. The first-channel loudspeaker 2042 and the second-channel loudspeaker 2044 can form a stereo audio, thereby improving the sound quality of the earphone assembly 10 in the sound mode.

[0053] In some embodiments of the present application, the accommodation box 200 further includes:

[0054] A second switching device 208, the second switching device 208 is connected to the first-channel loudspeaker 2042, the second-channel loudspeaker 2044 and the second connection part 206; the second switching device 208 includes a third switching state and a fourth switching state;

[0055] Among them, the number of the earphones 100 is two. When both earphones 100 are located in the accommodation bin 202, the second switching device 208 is in the third switching state, so that the two earphones 100 are respectively connected to the first-channel speaker 2042 and the second-channel speaker 2044; when one of the two earphones 100 is located in the accommodation bin 202 and the other earphone 100 is located outside the accommodation bin 202, the second switching device 208 is in the fourth switching state, so that the earphone 100 located in the accommodation bin 202 is simultaneously connected to the first-channel speaker 2042 and the second-channel speaker 2044.

[0056] In the embodiment of the present application, the number of the earphones 100 is two, corresponding to the left ear and the right ear respectively. A second switching device 208 is provided on the accommodation box 200. When both earphones 100 are located in the accommodation bin 202, that is, when the earphones 100 of the left ear and the right ear are both in place, if the user turns on the stereo mode, the first switching devices 106 of the stereo earphones 100 are both in the second switching state, and at the same time the second switching device 208 is in the third switching state. At this time, the digital-to-analog conversion modules 104 of the left-ear earphone 100 and the right-ear earphone 100 respectively drive the first-channel speaker 2042 and the second-channel speaker 2044 to emit sound, that is, the earphones 100 of the left and right ears respectively drive the speakers of the left and right channels to achieve stereo audio.

[0057] Exemplarily, Figure 3 shows a schematic circuit structure diagram of the earphone assembly 10 when the dual earphones 100 are in place in some embodiments of the present application, as Figure 2 and Figure 3 shown, Figure 3 The dotted arrows in show the transmission route of the audio drive signal. At this time, the earphone 100 of the left ear drives the first-channel speaker 2042 to emit sound, and the earphone 100 of the right ear drives the second-channel speaker 2044 to emit sound.

[0058] When only one earphone 100 is in the storage bin, the two second speakers 204 on both sides of the storage box are driven simultaneously by this one earphone 100. For example, if only the earphone 100 of the right ear is in the storage bin, the first switching device 106 of the earphone 100 of the right ear is in the second switching state, and at the same time the second switching device 208 is in the third switching state. At this time, the two second speakers 204 at the left and right ends of the storage box are driven simultaneously by the earphone 100 of the right ear.

[0059] Exemplarily, Figure 4 shows a schematic circuit structure diagram of the earphone assembly 10 when the single earphone 100 is in place in some embodiments of the present application, as Figure 2 and Figure 4 shown, Figure 4The dashed arrow therein shows the transmission route of the audio driving signal. At this time, the earphone 100 on the right ear simultaneously drives the first-channel speaker 2042 and the second-channel speaker 2044 to emit sound.

[0060] By providing the second switching device 208 in this application, when only one earphone 100 is in place, the two-channel speakers on the storage box can also emit sound simultaneously, thereby improving the sound effect in the audio mode.

[0061] In some embodiments of this application, the earphone 100 further includes:

[0062] A wireless communication module 110, which is used to establish a wireless connection with an electronic device to receive the digital audio signal sent by the electronic device; wherein, the digital-to-analog conversion module 104 outputs an audio driving signal according to the digital audio signal.

[0063] In the embodiments of this application, a wireless communication module 110 is provided on the earphone 100. The wireless communication module 110 can establish a wireless connection with electronic devices such as mobile phones, tablet computers, laptop computers or wearable devices, so as to receive the digital audio signals sent by these electronic devices. After receiving the digital audio signal, the digital-to-analog conversion module 104 on the earphone 100 performs digital-to-analog conversion and signal amplification processing on the digital audio signal to obtain an audio driving signal capable of driving the speaker to emit sound. It can be understood that the above audio driving signal is an analog signal.

[0064] Exemplarily, the wireless communication module 110 is a Bluetooth module. The earphone 100 establishes a Bluetooth connection with the electronic device through the Bluetooth module, and low-power wireless audio signal transmission can be realized through the Bluetooth connection.

[0065] Exemplarily, the wireless communication module 110 is a Wi-Fi (Wireless Fidelity) communication module. The earphone 100 establishes a 2.4G or 5G Wi-Fi connection with the electronic device through the Wi-Fi communication module. The Wi-Fi connection has a larger transmission bandwidth and can transmit audio signals with a higher bit rate, so as to realize high-fidelity audio playback.

[0066] Among them, only the wireless communication module 110 is provided on the earphone 100 to receive the digital audio signal sent by the user's mobile phone, and through the connection between the first connection part 108 and the second connection part 206, the audio driving signal after being converted by the digital-to-analog conversion module 104 is sent to the second speaker 204 provided on the storage box 200 for playback. Therefore, there is no need to provide an additional Bluetooth module on the storage box 200, which can reduce the occupation of the space of the storage box 200 and at the same time reduce the hardware cost of the storage box 200.

[0067] In some embodiments of the present application, the accommodation box 200 further includes:

[0068] A controller 210, which is connected to the second connection part 206;

[0069] Wherein, the number of the earphones 100 is two. When both of the two earphones 100 are located in the accommodation bin 202, one of the two earphones 100 receives the digital audio signal sent by the electronic device, and sends the digital audio signal to the controller 210 through the first connection part 108; when the controller 210 receives the digital audio signal, it sends the digital audio signal to the other earphone 100 among the two earphones 100 through the second connection part 206.

[0070] In the embodiments of the present application, a controller 210 is provided on the accommodation box 200. Exemplarily, the controller 210 is a Micro Controller Unit (MCU). When the earphone assembly 10 works in the audio mode and both of the two earphones 100 are in place, only one of the two earphones 100 remains wirelessly connected to the user electronic device. For example, as Figure 2 and Figure 3 shown, Figure 3 the solid arrows in

[0071] show the transmission path of the digital audio signal. Taking the right earphone 100 as the master device and the left earphone 100 as the slave device as an example. The right earphone 100 receives the digital audio signal sent by the user electronic device through the wireless communication module 110. After receiving the audio signal, on the one hand, the right earphone 100 converts the digital audio signal of the right channel in the audio signal into an audio driving signal of the right channel through the digital-to-analog conversion module 104, and drives the right channel speaker on the accommodation box to emit sound.

[0072] At the same time, the right earphone 100 sends the received digital audio signal to the controller 210 of the accommodation box through the connection between the first connection part 108 and the second connection part 206. After receiving the digital audio signal, the controller 210 of the accommodation box sends the digital audio signal to the left earphone 100 through the connection between the second connection part 206 and the first connection part 108 of the left earphone 100. After receiving the audio signal, the left earphone 100 converts the digital audio signal of the left channel in the audio signal into an audio driving signal of the left channel, and drives the left channel speaker on the accommodation box to emit sound.

[0073] In some embodiments of the present application, the digital-to-analog conversion module 104 includes a first conversion module 1042 and a second conversion module 1044; wherein, the first conversion module 1042 is disposed within the wireless communication module 110, and the second conversion module 1044 is connected to the wireless communication module 110;

[0074] Among them, the earphone 100 has a noise reduction mode and a sound quality mode; in the noise reduction mode, the first conversion module 1042 is connected to the first speaker 102; in the sound quality mode, the second conversion module 1044 is connected to the first speaker 102; when the earphone 100 is located within the accommodation bin 202, both the first conversion module 1042 and the second conversion module 1044 are connected to the second speaker 204.

[0075] In the embodiments of the present application, the earphone 100 is designed with a dual digital-to-analog conversion module 104. Among them, the first conversion module 1042 is a DAC integrated within the wireless communication module 110, and the second conversion module 1044 is an independently provided DAC.

[0076] The earphone 100 has a noise reduction mode and a sound quality mode. Among them, in the noise reduction mode, the earphone 100 collects environmental noise through a microphone, calculates the anti-signal of the environmental noise, and cancels the environmental noise by outputting the anti-signal of the environmental noise, thereby achieving noise reduction. In this process, there are relatively high requirements for signal delay. By driving the first speaker 102 to output the anti-signal through the first conversion module 1042 integrated within the wireless communication module 110, the length of the signal transmission path can be reduced, thereby reducing signal delay and improving the noise reduction effect.

[0077] In the sound quality mode, there are higher requirements for the sound quality effect and the voltage boost of the earphone 100. Therefore, when the earphone 100 operates in the sound quality mode, by using an independently provided DAC with higher resolution ability, better filtering effect and greater power, that is, the second conversion module 1044, to drive the first speaker 102 to play audio, the voltage boost and sound quality of the earphone 100 can be improved, and high-quality music playback can be achieved.

[0078] In some embodiments of the present application, the accommodation box 200 further includes:

[0079] A main body 212, within which the accommodation bin 202 is disposed;

[0080] A cover body 214, which is pivotally disposed on the main body 212, and the cover body 214 includes an open state and a closed state;

[0081] Among them, when the cover body 214 is in the open state, the first switching device 106 is turned off, so that the second speaker 204 does not operate.

[0082] In an embodiment of the present application, the accommodation box 200 includes a main body 212 and a cover 214. Among them, an accommodation chamber 202 is provided in the main body 212, and the cover 214 is connected to the main body 212 in an openable and closable manner. When the cover 214 is in the open state, the accommodation chamber 202 is exposed. At this time, the user can take out the earphone 100 in the accommodation chamber 202 or put the worn earphone 100 back into the accommodation chamber 202. When the accommodation chamber 202 is in the closed state, the accommodation chamber 202 is in the closed state. After the accommodation chamber 202 is closed, the accommodation chamber 202 can form a sealed cavity. At this time, the accommodation chamber 202 can be formed into a resonance cavity. When the second speaker 204 emits sound, the resonance of the resonance cavity formed by the accommodation chamber 202 can improve the volume and sound quality.

[0083] When the earphone assembly 10 is in the audio mode, if the cover 214 is in the open state, the first switching device 106 is disconnected, and the signal path between the digital-to-analog conversion module and the second speaker 204 is cut off, so that the second speaker 204 does not work. Only when the cover 214 is in the closed state, the second speaker 204 will emit sound, so as to ensure a sufficient resonance cavity volume and ensure the sound quality and volume.

[0084] In some embodiments of the present application, the main body 212 further includes:

[0085] A sound cavity 216, and the second speaker 204 is disposed in the sound cavity 216; among them, the earphone assembly 10 has a cleaning mode. In the cleaning mode, the second speaker 204 operates based on a preset sound wave frequency band to cause the sound cavity 216 and the main body 212 to resonate.

[0086] In an embodiment of the present application, an independent sound cavity 216 is further provided on the main body 212. Among them, each second speaker 204 is disposed in an independent sound cavity 216. By providing the independent sound cavity 216, the volume and sound quality of each second speaker 204 can be improved.

[0087] The earphone assembly 10 further includes a cleaning mode. In the cleaning mode, the second speaker 204 can operate based on a preset sound wave frequency band. Among them, the preset sound wave frequency band is the ultrasonic frequency band. When the second speaker 204 operates in the ultrasonic frequency band, the ultrasonic waves emitted by the second speaker 204 resonate with the sound cavity 216 and the cavity in the accommodation chamber 202, and at the same time drive the storage box and the earphone 100 therein to vibrate at a high frequency. These high-frequency vibrations can shake off the dust and dirt attached to the earphone 100 or the inside of the storage box, realizing the function of ultrasonic dust removal.

[0088] In some embodiments of the present application, the main body 212 further includes:

[0089] A battery 218;

[0090] A charging module 220, the charging module 220 is electrically connected to the battery 218; wherein, when the earphone 100 is located in the accommodation bin 202 and the power of the earphone 100 is lower than the power threshold, the charging module 220 is used to charge the earphone 100.

[0091] In the embodiment of the present application, a battery 218 and a charging module 220 are arranged on the main body 212 of the accommodation box 200. Exemplarily, the charging module 220 is a wireless power supply coil. A charging coil corresponding to the wireless power supply coil is arranged on the earphone 100. When the earphone 100 is correctly placed in the accommodation bin 202, the wireless power supply coil is coupled to the charging coil on the earphone 100, so as to charge the earphone 100 through the power stored in the battery 218.

[0092] In some embodiments of the present application, a headphone assembly capable of realizing a sound function by using TWS earphones is proposed. A plurality of speakers are arranged in the storage box of the headphone assembly, and the storage box realizes space saving through a common sound cavity structure.

[0093] In each earphone, two-way DACs of the Bluetooth SOC sub-generation and two-way DAC outputs of an external DAC chip are used. A single earphone can support up to four-way speaker outputs at most. While improving the sound quality of the earphone, the storage box can support up to 8 speaker arrays at most.

[0094] As Figure 1 shown, there is a Bluetooth SOC, a DAC chip, two audio switches with low on-resistance, two speakers (dual-unit speakers) and corresponding metal contacts in each earphone. There are 8 speakers, corresponding metal contacts, an MCU, a charging module and a large-capacity battery in the storage box.

[0095] At the same time, there is a corresponding Bluetooth control chip on each earphone to realize the Bluetooth connection between the storage box, the earphone and the mobile phone.

[0096] As Figure 1 shown, the headphone assembly of the embodiment of the present application has the following functions:

[0097] 1. TWS noise reduction mode. When the earphone comes out of the box, the earphone contact detects the disappearance of the Universal Asynchronous Receiver / Transmuter (UART) signal and the 5V power supply signal, determines that the earphone comes out of the box, and the Bluetooth SOC controls the audio switch 1 to switch the path to the speaker of the earphone through the General-Purpose Input / Output (GPIO), controls the audio switch 2 to disconnect, and uses the DAC of the Bluetooth SOC to drive the speaker to realize the noise reduction function.

[0098] 2. TWS High-quality Audio Mode. When selecting an external DAC, a high-performance DAC with a high Signal to Interference plus Noise Ratio (SNR) and a high Total Harmonic Distortion+Noise (THD+N) should be chosen. When the earphone leaves the case, the earphone contacts detect the disappearance of the asynchronous transceiver signal and the 5V power supply signal, and it is determined that the earphone has left the case. The Bluetooth SOC controls the audio switch 1 to disconnect through the general-purpose input / output port, and controls the audio switch 2 to switch the path to the speaker of the earphone, and uses the external DAC to drive the speaker to achieve high-quality audio playback.

[0099] 3. Bluetooth Speaker Mode. When the earphone enters the case, the charging case recognizes that the earphone has entered the case. The Bluetooth SOC controls the audio switches 1 and 2 to switch the path to the metal contacts, and the Bluetooth SOC and the external DAC drive the speaker array in the charging case to sound simultaneously. The Bluetooth SOC switches the audio path to the speaker path and finally sounds through the speaker.

[0100] 4. Lost Item Search Mode. When the device is lost nearby, as long as there is a pairing record between the device and the mobile phone, through the "Find Device" on the mobile phone, the earphone is controlled to drive the high-power speaker in the charging case to sound. There is no need to place a Bluetooth chip in the charging case, and the sound of the high-power speaker is louder and easier to be detected.

[0101] 5. Dirt Removal Mode: When the earphone enters the case, the charging module of the charging case recognizes that the earphone has entered the case through current detection. The 5V signal and communication signal of the earphone are present, and the earphone determines that it has entered the case. The Bluetooth SOC controls the audio switches 1 and 2 to switch the path to the metal contacts through the general-purpose input / output port, and the DAC of the Bluetooth SOC and the external DAC drive the speaker in the charging case to work in the ultrasonic frequency band at the same time. The ultrasonic wave resonates and strengthens in the cavity of the charging case, shaking off the dirt on the earphone and the charging case, realizing the function of ultrasonic dust removal.

[0102] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0103] Although embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. An earphone assembly, characterized in that, Comprising: A headset, the headset comprising: A first speaker; A digital-to-analog conversion module for outputting an audio drive signal; A first switching device connected to the first speaker and the digital-to-analog conversion module, the first switching device including a first switching state and a second switching state; A storage case, the storage case comprising: A storage chamber for storing the headset; A second speaker, when the headset is located in the storage chamber, the second speaker is connected to the first switching device; Wherein, when the first switching device is in the first switching state, the digital-to-analog conversion module is connected to the first speaker to output the audio drive signal to the first speaker; when the headset is located in the storage chamber and the first switching device is in the second switching state, the digital-to-analog conversion module is connected to the second speaker to output the audio drive signal to the second speaker.

2. The earphone assembly according to claim 1, wherein The headset further includes a first connection portion, and the storage case further includes: A second connection portion provided in the storage chamber; wherein, when the headset is located in the storage chamber, the first connection portion is connected to the second connection portion to connect the second speaker to the first switching device.

3. The earphone assembly according to claim 2, characterized in that, The second speaker includes a first-channel speaker and a second-channel speaker, and in the width direction of the storage case, the first-channel speaker and the second-channel speaker are respectively located at both ends of the storage case.

4. The earphone assembly according to claim 3, wherein, The storage case further includes: A second switching device connected to the first-channel speaker, the second-channel speaker and the second connection portion; the second switching device includes a third switching state and a fourth switching state; Wherein, the number of the headsets is two. When both of the two headsets are located in the storage chamber, the second switching device is in the third switching state to connect the two headsets to the first-channel speaker and the second-channel speaker respectively; when one of the two headsets is located in the storage chamber and the other headset is located outside the storage chamber, the second switching device is in the fourth switching state to connect the headset located in the storage chamber to the first-channel speaker and the second-channel speaker simultaneously.

5. The earphone assembly according to claim 2, wherein, The headset further includes: A wireless communication module for establishing a wireless connection with an electronic device to receive a digital audio signal sent by the electronic device; wherein, the digital-to-analog conversion module outputs the audio drive signal according to the digital audio signal.

6. The earphone assembly according to claim 5, wherein, The storage case further includes: A controller connected to the second connection portion; Among them, the number of the earphones is two. When both of the two earphones are located in the accommodation bin, one of the two earphones receives the digital audio signal sent by the electronic device and sends the digital audio signal to the controller through the first connection part; when the controller receives the digital audio signal, it sends the digital audio signal to the other one of the two earphones through the second connection part.

7. The earphone component according to claim 5, characterized in that The digital-to-analog conversion module includes a first conversion module and a second conversion module; among them, the first conversion module is arranged in the wireless communication module, and the second conversion module is connected to the wireless communication module; Among them, the earphone has a noise reduction mode and a sound quality mode; in the noise reduction mode, the first conversion module is connected to the first speaker; in the sound quality mode, the second conversion module is connected to the first speaker; when the earphone is located in the accommodation bin, both the first conversion module and the second conversion module are connected to the second speaker.

8. The earphone assembly according to any one of claims 1 to 7, characterized in that, The accommodation box further includes: A body, and the accommodation bin is arranged in the body; A cover body, and the cover body is detachably arranged on the body, and the cover body includes an open state and a closed state; Among them, when the cover body is in the open state, the first switch device is disconnected so that the second speaker does not work.

9. The earphone assembly according to claim 8, characterized in that, The body further includes: A sound cavity, and the second speaker is arranged in the sound cavity; among them, the earphone assembly has a cleaning mode, and in the cleaning mode, the second speaker works based on a preset sound wave frequency band to make the sound cavity and the body resonate.

10. The earphone assembly according to claim 8, wherein, The body further includes: A battery; A charging module, and the charging module is electrically connected to the battery; among them, when the earphone is located in the accommodation bin and the power of the earphone is lower than the power threshold, the charging module charges the earphone.

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