Wireless headphones

Abstract

A wireless headset includes a plurality of antenna modules, a radio frequency module, a sensing module, a speaker module, and a processing module. The antenna modules are coupled to each other; the radio frequency module is used to receive or send radio frequency signals through the antenna module; the sensing module is used to sense the capacitance value of a parasitic capacitor of the antenna module and generate a corresponding sensing signal; the speaker module is used to play an audio signal; and the processing module is used to generate a control signal according to the radio frequency signal or the sensing signal to control the speaker module to play an audio signal corresponding to the control signal.

Description

Technical Field

[0001] The invention relates to a wireless headset, in particular to a wireless headset capable of receiving user operation instructions. Background Art

[0002] Generally speaking, TWS (True Wireless Stereo) headphones include components such as a processor, an antenna, and a radio frequency circuit, which are usually arranged on a circuit board. In addition, in order to facilitate operation, a control component will be set on the headphone body to receive the user's operating instructions through mechanical, acceleration sensing or capacitive sensing, and these control components must also be set on the circuit board. The existing technology increases the area or number of circuit boards to accommodate control components, but this will increase the size, weight and cost of TWS headphones.

[0003] In addition to the above problems, taking the control component using capacitive sensing as an example, in order to receive the user's operating instructions, the contact interface part of the control component must be set on the outside of the earphone, so that the antenna component must be set on the inside of the earphone (i.e., facing the user's head). This will make the antenna component's ability to receive or send radio frequency signals worse, and the radio frequency signals sent by the antenna component may affect the user's health. Therefore, how to provide a wireless headset that can integrate radio frequency signal reception and transmission and sensing functions has become an issue that the industry urgently needs to solve. Summary of the invention

[0004] In order to solve the aforementioned problems in the prior art, an object of the present invention is to provide a wireless headset that can integrate radio frequency signal receiving and transmitting and sensing functions.

[0005] In order to achieve the above-mentioned purpose, the wireless headset of the present invention includes a plurality of antenna modules, a radio frequency module, a sensing module, a speaker module and a processing module. The antenna modules are coupled to each other; the radio frequency module is coupled to the antenna module, and the radio frequency module is used to receive or send radio frequency signals through the antenna module; the sensing module is coupled to the antenna module, and the sensing module is used to sense the capacitance value of a parasitic capacitor of the antenna module and generate a corresponding sensing signal; the speaker module is used to play an audio signal; and the processing module is connected to the radio frequency module, the sensing module and the speaker module, and the processing module is used to generate a control signal according to the radio frequency signal or the sensing signal to control the speaker module to play an audio signal corresponding to the control signal.

[0006] In one embodiment of the present invention, a plurality of antenna modules are coupled via a first capacitor structure.

[0007] In one embodiment of the present invention, the first capacitor structure is a distributed capacitor structure or a lumped capacitor structure.

[0008] In one embodiment of the present invention, the RF module is coupled to the antenna module via a second capacitor structure.

[0009] In one embodiment of the present invention, the second capacitor structure is a distributed capacitor structure or a lumped capacitor structure.

[0010] In one embodiment of the present invention, the sensing module and the antenna module are coupled via a first inductor.

[0011] In one embodiment of the present invention, the processing module is further used to determine the distance between an external object and the antenna module or whether the external object is in contact with the antenna module according to the capacitance value measured by the sensing module.

[0012] In one embodiment of the present invention, the wireless headset includes a plurality of sensing modules, each of which is coupled to a corresponding antenna module, and the processing module is further used to determine a contact sequence between an external object and the antenna module.

[0013] In one embodiment of the present invention, the antenna module is a rectangular structure.

[0014] In one embodiment of the present invention, the total length of the antenna modules is equal to 1 / 8 to 1 wavelength of the radio frequency signal.

[0015] In one embodiment of the present invention, the antenna module is disposed on a flexible printed circuit board.

[0016] In one embodiment of the present invention, the wireless headset further includes a storage module, which is connected to the processing module and is used to store digital information.

[0017] In one embodiment of the present invention, the wireless headset further includes a power module, which is connected to the processing module and is used to supply power required for the operation of the RF module, the sensing module, the speaker module and the processing module.

[0018] In one embodiment of the present invention, the wireless headset further includes a microphone module, which is connected to the processing module and is used to convert an external sound signal into a digital sound signal.

[0019] In one embodiment of the present invention, the wireless headset further includes an infrared sensing module, which is connected to the processing module and is used to sense whether the wireless headset is worn.

[0020] Compared with the prior art, the wireless headset of the present invention includes multiple antenna modules, radio frequency modules and sensing modules, wherein the radio frequency module and the sensing module share the antenna modules, instead of using different radiators as in the prior art, thereby saving space and cost, and the antenna module does not need to be arranged inside the wireless headset, so that the function can be fully exerted and electromagnetic waves can be avoided from being sent directly to the human body. In addition, the wireless headset of the present invention may also include a first capacitor structure, a second capacitor structure or a first inductive coupling to isolate the signals between the components, and may also include a storage module, a microphone module or an infrared sensing module to enhance the additional functions of the wireless headset. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 FIG. 1 is a schematic diagram of the structure of a wireless headset according to a first embodiment of the present invention.

[0022] Figure 2 FIG. 2 is a schematic diagram of the structure of a wireless headset according to a second embodiment of the present invention.

[0023] Figure 3a and 3b FIG. 4 is a schematic diagram of the structure of a distributed capacitor according to a third embodiment of the present invention.

[0024] Figure 4 FIG. 4 is a schematic diagram of the structure of a wireless headset according to a fourth embodiment of the present invention.

[0025] Figure 5 FIG. 5 is a schematic diagram of the structure of an antenna module according to a fifth embodiment of the present invention.

[0026] Figure 6 FIG. 6 is a schematic diagram of the structure of a wireless headset according to a sixth embodiment of the present invention.

[0027] Figure 7 FIG. 4 is a functional block diagram of a wireless headset according to a seventh embodiment of the present invention.

[0028] Explanation of symbols:

[0029] 1. Wireless headphones

[0030] 10a, 10b, 10c Antenna module

[0031] 11 RF module

[0032] 12. Sensor Module

[0033] 12a, 12b, 12c Sensing module

[0034] 13 Speaker Module

[0035] 14 Processing Module

[0036] C1a, C1b First capacitor structure

[0037] C2 Second capacitor structure

[0038] D Length

[0039] L1 First Inductor

[0040] L1a, L1b, L1c First inductor

[0041] 60 Flexible printed circuit board

[0042] 70 Storage Module

[0043] 71 Power module

[0044] 72 Microphone Module

[0045] 73 Infrared sensor module DETAILED DESCRIPTION

[0046] The following describes the implementation of the present invention by using specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied by using other different embodiments.

[0047] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for the understanding and reading of those familiar with this technology, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any structural modification, change in proportion or adjustment in size, without affecting the effects and purposes that can be produced by the present invention, should fall within the scope of the technical contents disclosed by the present invention. At the same time, the terms such as "upper", "inner", "outer", "bottom" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The relative changes or adjustments, without substantially changing the technical contents, should also be regarded as the scope of the implementation of the present invention, and should be described first.

[0048] See also Figure 1 , Figure 1 The wireless headset 1 of the present invention comprises a plurality of antenna modules 10a, 10b, 10c, a radio frequency module 11, a sensing module 12, a speaker module 13 and a processing module 14.

[0049] The antenna modules 10a, 10b, and 10c are coupled to each other. In this embodiment, three antenna modules 10a, 10b, and 10c are included, but the present invention is not limited thereto. In other embodiments, two or more antenna modules may be included, and the antenna modules are coupled to each other. For example, the spacing between adjacent antenna modules 10a, 10b and antenna modules 10b, 10c is very small to form a distributed capacitance structure.

[0050] The RF module 11 can be coupled with any antenna module 10a, 10b, 10c. In this embodiment, the coupling of the RF module 11 with the antenna module 10a is taken as an example, but the invention is not limited thereto. The RF module 11 is used to receive or send RF signals through the antenna modules 10a, 10b, 10c. The RF signal is a high-frequency signal. Since the antenna modules 10a, 10b, 10c are coupled with each other, all the antenna modules 10a, 10b, 10c are used simultaneously when the RF module 11 receives or sends the RF signal. For example, the RF signal can be an electromagnetic wave signal based on the Wi-Fi band, LTE band, or 5G New Radio band standard, but the invention is not limited thereto.

[0051] The sensing module 12 can be coupled with any of the antenna modules 10a, 10b, and 10c. In this embodiment, the coupling of the sensing module 12 with the antenna module 10b is taken as an example, but the present invention is not limited thereto. The sensing module 12 is used to sense the capacitance value of a parasitic capacitor of the antenna module 10b and generate a corresponding sensing signal. Since the sensing module 12 generates a corresponding sensing signal based on the change in the capacitance value of the parasitic capacitor, the change in the capacitance value is a low-frequency signal. Based on the capacitance value measured by the sensing module 12, it can be determined whether the antenna module 10b is touched by a human hand or is close to a preset distance.

[0052] The speaker module 13 is used to play audio signals, and the processing module 14 is connected to the RF module 11, the sensing module 12 and the speaker module 13. The processing module 14 is used to generate a control signal according to the RF signal or the sensing signal to control the speaker module 13 to play the audio signal corresponding to the control signal. For example, the RF signal may include information from a mobile phone or other device, such as music, sound or operation information. The sensing signal may include human hand contact or specific gestures, and the processing module 14 may convert the sensing signal into a corresponding operation instruction, such as amplifying, reducing the volume of the played audio or muting it. The processing module 14 may be, for example, a processor chip.

[0053] See also Figure 2 , Figure 2Schematic diagram of the structure of the wireless headset of the second embodiment of the present invention. In one embodiment, multiple antenna modules 10a, 10b, 10c can be coupled through first capacitor structures C1a and C1b. The first capacitor structures C1a and C1b can isolate low-frequency signals between antenna modules 10a, 10b, 10c. In one embodiment, the first capacitor structures C1a and C1b can be distributed capacitor structures. For example, the distributed first capacitor structure C1a can be formed by reducing the distance between adjacent antenna modules 10a and 10b and making the edge shape of antenna module 10a correspond to the edge shape of antenna module 10b.

[0054] See also Figure 3a and 3b , Figure 3a and 3b FIG. 1 is a schematic diagram of a distributed capacitor structure according to a third embodiment of the present invention. The distributed capacitor structure may be, for example, Figure 3a , 3b The structure shown is not limited thereto.

[0055] In another embodiment, the first capacitor structures C1a and C1b may be lumped capacitor structures, which are attached between the antenna modules 10a, 10b, and 10c. For example, the lumped capacitor structures may be multi-layer ceramic capacitors (MLCC), but are not limited thereto.

[0056] In one embodiment, the RF module 11 can be coupled with any antenna module 10a, 10b, 10c via the second capacitor structure C2. In this embodiment, the coupling between the RF module 11 and the antenna module 10a is taken as an example, but the present invention is not limited thereto.

[0057] In one embodiment, the second capacitor structure C2 may be a distributed capacitor structure or a lumped capacitor structure. The second capacitor structure C2 may be the same as or different from the first capacitor structures C1a and C1b.

[0058] In one embodiment, the sensing module 12 can be coupled with any antenna module 10a, 10b, 10c via the first inductor L1. In this embodiment, the coupling between the sensing module 12 and the antenna module 10a is taken as an example, but the present invention is not limited thereto.

[0059] Since the second capacitor structure C2 can isolate low frequency signals and the first inductor L1 can isolate high frequency signals, the RF module 11 and the sensing module 12 will not interfere with each other and can share the antenna modules 10a, 10b, 10c as radiators, thereby saving costs and component space.

[0060] In one embodiment, the processing module 14 is further configured to determine the distance between an external object (eg, a human hand) and the antenna modules 10 a , 10 b , 10 c or whether they are in contact with each other according to the capacitance value measured by the sensing module 12 .

[0061] See also Figure 4 , Figure 4 Schematic diagram of the structure of the wireless headset of the fourth embodiment of the present invention. In one embodiment, the wireless headset 1 may include a plurality of sensing modules 12a, 12b, and 12c. The sensing module 12a is coupled to the corresponding antenna module 10a through the first inductor L1a, the sensing module 12b is coupled to the corresponding antenna module 10b through the first inductor L1b, and the sensing module 12c is coupled to the corresponding antenna module 10c through the first inductor L1c. The sensing modules 12a, 12b, and 12c are respectively used to sense the capacitance values ​​of the parasitic capacitances of the corresponding antenna modules 10a, 10b, and 10c. The processing module 14 is also used to determine the contact sequence between the external object and the antenna modules 10a, 10b, and 10c.

[0062] exist Figure 4 In the embodiment, the number of sensing modules 12a, 12b, 12c is the same as the number of antenna modules 10a, 10b, 10c, which is three. In other embodiments, the number of sensing modules and antenna modules can be adjusted as required. For example, the wireless headset of the present invention may include three sensing modules and five antenna modules. The antenna modules not coupled to the sensing modules can be used as buffers to avoid accidental touches.

[0063] Furthermore, the order in which the human hand contacts the antenna modules 10a, 10b, 10c represents a specific gesture, for example, touching the antenna modules 10a, 10b, 10c in sequence represents a first gesture, and touching the antenna modules 10c, 10b, 10a in sequence represents a second gesture, and the processing module 14 can generate corresponding control signals according to these gestures. In other embodiments, the wireless headset of the present invention can include more sensing modules or antenna modules to determine more complex gestures or make the gesture determination more accurate.

[0064] See also Figure 5 , Figure 5 FIG. 5 is a schematic diagram of the structure of an antenna module according to a fifth embodiment of the present invention. In one embodiment, the antenna modules 10a, 10b, and 10c may be rectangular structures, but are not limited thereto. For example, a circular ring structure may be divided into a plurality of equal antenna modules.

[0065] In one embodiment, the total length D of the antenna modules 10a, 10b, and 10c is equal to 1 / 8 to 1 wavelength of the radio frequency signal.

[0066] See also Figure 6 , Figure 6The sixth embodiment of the wireless headset of the present invention is a schematic diagram of the structure. In one embodiment, the antenna modules 10a, 10b, 10c can be arranged on a flexible circuit board 60, and the antenna modules 10a, 10b, 10c can be arranged on the side of the wireless headset 1 away from the human body, so that the direction of the radio frequency signal sent by the antenna modules 10a, 10b, 10c will not be directly toward the human body, so the radio frequency signal sent by the antenna modules 10a, 10b, 10c will not be blocked and can avoid harming the health of the user. The radio frequency module 11, the sensing module 12 and the processing module 14 can also be arranged on the flexible circuit board 60, but it is not limited thereto, and can also be arranged on another flexible circuit board.

[0067] See also Figure 7 , Figure 7 1 is a functional block diagram of a wireless headset according to a seventh embodiment of the present invention. In one embodiment, the wireless headset 1 includes, in addition to the antenna modules 10a and 10b, the radio frequency module 11, the sensing module 12, the speaker module 13, and the processing module 14, a storage module 70 may also be connected to the processing module 14 and used to store digital information. The storage module 701 may be, for example, a storage chip, but is not limited thereto.

[0068] In one embodiment, the wireless headset 1 may further include a power module 71, which is connected to the processing module 14 and is used to supply power required for the operation of the RF module 11, the sensing module 12, the speaker module 13, the processing module 14 and other modules. The power module 71 may be, for example, a lithium battery, but is not limited thereto.

[0069] In one embodiment, the wireless headset 1 may further include a microphone module 72 , which is connected to the processing module 14 and is used to convert external sound signals into digital sound signals.

[0070] In one embodiment, the wireless headset 1 may further include an infrared sensing module 73 , which is connected to the processing module 14 and is used to sense whether the wireless headset 1 is being worn.

[0071] In summary, the wireless headset of the present invention includes multiple antenna modules, radio frequency modules and sensing modules, wherein the radio frequency modules and sensing modules share some antenna modules, instead of using different radiators as in the prior art, thereby saving space and cost, and the antenna module does not need to be arranged inside the wireless headset, so that the function can be fully exerted and electromagnetic waves can be avoided from being sent directly to the human body. In addition, the wireless headset of the present invention may also include a first capacitor structure, a second capacitor structure or a first inductive coupling to isolate the signals between the components, and may also include a storage module, a microphone module or an infrared sensing module to enhance the additional functions of the wireless headset.

[0072] Through the description of the above preferred specific embodiments, those with ordinary knowledge in the art can more clearly understand the characteristics and spirit of the present invention, but the above embodiments are only for illustrating the principles and effects of the present invention, and are not used to limit the present invention. Therefore, any modification and change made to the above embodiments still does not deviate from the spirit of the present invention, and the scope of rights of the present invention should be as listed in the claims.

Claims

1. A wireless headset, characterized in that: The wireless headset comprises: A plurality of antenna modules, the antenna modules are coupled to each other; A radio frequency module, coupled to the antenna module, and used to receive or send a radio frequency signal through the antenna module; A sensing module coupled to the antenna module, the sensing module being used to sense a capacitance value of a parasitic capacitor of the antenna module and generate a corresponding sensing signal; A speaker module for playing audio signals; and a processing module connected to the RF module, the sensing module and the speaker module, the processing module being used to generate a control signal according to the RF signal or the sensing signal to control the speaker module to play the audio signal corresponding to the control signal; The multiple antenna modules are coupled to each other via a first capacitor structure, and the sensing module is coupled to the connected antenna module via a first inductor.

2. The wireless headset according to claim 1, characterized in that: The first capacitor structure is a distributed capacitor structure or a lumped capacitor structure.

3. The wireless headset according to claim 1, characterized in that: The first capacitor structure is a distributed capacitor structure formed by gaps between adjacent antenna modules.

4. The wireless headset according to claim 1, characterized in that: The radio frequency module is coupled to one of the antenna modules via a second capacitor structure.

5. The wireless headset according to claim 4, characterized in that: The second capacitor structure is a distributed capacitor structure or a lumped capacitor structure.

6. The wireless headset according to claim 1, characterized in that: The processing module is also used to determine the distance between an external object and the antenna module or whether the object is in contact with the antenna module according to the capacitance value measured by the sensing module.

7. The wireless headset according to claim 6, characterized in that: The wireless headset comprises a plurality of sensing modules, each of which is coupled with the corresponding antenna module. The processing module is also used to determine the contact sequence between the external object and the antenna module.

8. The wireless headset according to claim 1, wherein: The antenna module has a rectangular structure.

9. The wireless headset according to claim 8, characterized in that: The total length of the antenna modules is equal to 1 / 8 to 1 wavelength of the radio frequency signal.

10. The wireless headset according to claim 1, wherein: The antenna module is arranged on a flexible circuit board.

11. The wireless headset according to claim 1, wherein: The wireless headset also includes: The storage module is connected to the processing module and is used to store digital information.

12. The wireless headset according to claim 1, wherein: The wireless headset also includes: The power module is connected to the processing module and is used to supply power required for the operation of the RF module, the sensing module, the speaker module and the processing module.

13. The wireless headset according to claim 1, wherein: The wireless headset also includes: The microphone module is connected to the processing module and is used for converting external sound signals into digital sound signals.

14. The wireless headset according to claim 1, wherein: The wireless headset also includes: The infrared sensing module is connected to the processing module, and is used for sensing whether the wireless headset is worn.

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