Wireless headphones

Abstract

A wireless headset includes a first antenna module, at least one second antenna module, a radio frequency module, a sensing module, a speaker module, and a processing module. The radio frequency module is used to receive or send a radio frequency signal through the first antenna module or the second antenna module; the sensing module is used to sense the capacitance value of the first parasitic capacitor of the first antenna module and generate a corresponding first sensing signal, and is used to sense the capacitance value of the second parasitic capacitor of the second antenna module and generate a corresponding second 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, the first sensing signal, or the second 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 receive operating instructions or audio data from external devices such as mobile phones through antennas. Taking the use of mobile phones as an example, users may hold their mobile phones for video and calls at the same time, or put their mobile phones in their pockets and listen to music at the same time. In order to maintain good communication quality in various situations, TWS headphones need to be equipped with multiple antennas to receive RF signals from different directions.

[0003] On the other hand, general users also hope that TWS headphones can have wearing detection functions (or in-ear detection functions) and direct gesture operation functions. However, the components added for these functions will also occupy the space inside the TWS headphones. Due to the limited internal space of TWS headphones, it is difficult for existing technologies to meet all the above requirements at the same time. Therefore, how to provide a wireless headset with complete coverage of the receiving signal range and both wearing detection and gesture operation functions has become an issue that the industry needs to solve urgently. Summary of the invention

[0004] In order to solve the various problems of the prior art mentioned above, an object of the present invention is to provide a wireless headset with complete signal receiving range coverage and having wearing detection and gesture operation functions.

[0005] In order to achieve the above-mentioned purpose, the wireless headset of the present invention includes a first antenna module, at least one second antenna module, a radio frequency module, a sensing module, a speaker module and a processing module. The radio frequency module is coupled with the first antenna module and the second antenna module, and the radio frequency module is used to receive or send radio frequency signals through the first antenna module or the second antenna module; the sensing module is coupled with the first antenna module and the second antenna module, and the sensing module is used to sense the capacitance value of the first parasitic capacitor of the first antenna module and generate a corresponding first sensing signal, and to sense the capacitance value of the second parasitic capacitor of the second antenna module and generate a corresponding second sensing signal; the speaker module is used to play audio signals; and the processing module is connected with 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, the first sensing signal or the second sensing signal to control the speaker module to play the audio signal corresponding to the control signal.

[0006] In one embodiment of the present invention, the first antenna module includes a plurality of conductor components, and the conductor components 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 radio frequency module is coupled to the first antenna module or the second 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 is coupled with the first antenna module or the second antenna module via a first inductor.

[0011] In one embodiment of the present invention, the processing module is further configured to determine the distance between the first external object and the first antenna module or whether they are in contact with each other according to the first sensing signal.

[0012] In one embodiment of the present invention, the processing module is further configured to determine the distance between the second external object and the second antenna module or whether they are in contact with each other according to the second sensing signal.

[0013] In one embodiment of the present invention, the processing module is further configured to determine a contact sequence between the third external object and the first antenna module and the second antenna module according to the first sensing signal and the second sensing signal.

[0014] In one embodiment of the present invention, the first antenna module or the second antenna module is disposed on a flexible printed circuit board.

[0015] In one embodiment of the present invention, the antenna pattern direction of the first antenna module is different from the antenna pattern direction of the second antenna module.

[0016] In one embodiment of the present invention, the wireless headset also includes a radio frequency switch connected between the radio frequency module and the first antenna module and the second antenna module. The radio frequency switch is used to select the first antenna module or the second antenna module to be turned on according to the strength of the radio frequency signal received or sent by the first antenna module and the second antenna module.

[0017] 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.

[0018] 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.

[0019] 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.

[0020] Compared to the conventional technology, the wireless headset of the present invention includes a first antenna module, at least one second antenna module and a radio frequency module. The first antenna module and the second antenna module can receive radio frequency signals in different directions to ensure the communication quality in various usage situations. The wireless headset of the present invention also includes a sensing module. The sensing module and the radio frequency module share the first and second antenna modules, so that the wireless headset can provide the functions of wearing detection and gesture operation without adding additional components. 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 or a microphone 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. 4 is a schematic diagram of the structure of a first antenna module according to a second embodiment of the present invention.

[0023] Figure 3 FIG. 4 is a schematic diagram of the structure of a wireless headset 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 a wireless headset according to a fifth embodiment of the present invention.

[0026] Figure 6 FIG. 4 is a functional block diagram of a wireless headset according to a sixth embodiment of the present invention.

[0027] Explanation of symbols:

[0028] 1. Wireless headphones

[0029] 10 First antenna module

[0030] 100a, 100b, 100c conductor assembly

[0031] 11 Second antenna module

[0032] 12 RF Module

[0033] 13. Sensor Module

[0034] 14 Speaker Module

[0035] 15 Processing Module

[0036] C1a, C1b First capacitor structure

[0037] C2a, C2b Second capacitor structure

[0038] L1a, L1b First inductor

[0039] 40, 41 Flexible printed circuit board

[0040] 60 Storage Module

[0041] 61 Power Module

[0042] 62 Microphone Module DETAILED DESCRIPTION

[0043] 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.

[0044] 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.

[0045] See also Figure 1 , Figure 1 As shown in the figure, the wireless headset 1 of the present invention comprises a first antenna module 10, at least one second antenna module 11, a radio frequency module 12, a sensing module 13, a speaker module 14 and a processing module 15.

[0046] The RF module 12 is coupled to the first antenna module 10 and the second antenna module 11, and the RF module 12 is used to receive or send RF signals through the first antenna module 10 or the second antenna module 11. The antenna pattern direction of the first antenna module 10 may be different from the antenna pattern direction of the second antenna module 11 to receive RF signals from different directions and ensure the communication quality in various usage situations. In this embodiment, the wireless headset 1 includes a second antenna module 11, but in other embodiments, the wireless headset 1 may include more second antenna modules 11 to expand the coverage range of the receivable signal. The RF signal is a high-frequency signal. For example, the RF signal may be an electromagnetic wave signal based on the Wi-Fi band, LTE band or 5G New Radio band standard, but is not limited thereto.

[0047] The sensing module 13 is coupled to the first antenna module 10 and the second antenna module 11. The sensing module 13 is used to sense the capacitance value of the first parasitic capacitor of the first antenna module 10 and generate a corresponding first sensing signal, and to sense the capacitance value of the second parasitic capacitor of the second antenna module 11 and generate a corresponding second sensing signal. The sensing module 13 generates a corresponding sensing signal according to the change in the capacitance value of the parasitic capacitor, and the change in the capacitance value is a low-frequency signal. According to the capacitance value measured by the sensing module 13, it can be determined whether the first antenna module 10 or the second antenna module 11 is touched by a human hand or is close to a default distance.

[0048] The speaker module 14 is used to play audio signals. The processing module 15 is connected to the RF module 12, the sensing module 13 and the speaker module 14. The processing module 15 is used to generate a control signal based on the RF signal, the first sensing signal or the second sensing signal to control the speaker module 14 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 first sensing signal or the second sensing signal may correspond to human body contact, such as a hand touch or indicating that the wireless headset 1 is worn on the ear. The processing module 15 can convert the first sensing signal or the second sensing signal into a corresponding operation instruction, such as amplifying, reducing the volume of the played audio or muting. The processing module 15 can be, for example, a processor chip.

[0049] See also Figure 2 , Figure 2Schematic diagram of the structure of the first antenna module of the second embodiment of the present invention. In one embodiment, the first antenna module 10 may include a plurality of conductor components 100a, 100b, 100c, and the conductor components 100a, 100b, 100c are coupled through first capacitor structures C1a, C1b. The first capacitor structures C1a, C1b can isolate the low-frequency signal between the conductor components 100a, 100b, 100c. Furthermore, since the capacitance value of the parasitic capacitor changes to a low-frequency signal, the low-frequency signal between the isolated conductor components 100a, 100b, 100c represents the capacitance value change of the individual parasitic capacitors of the conductor components 100a, 100b, 100c that can be sensed respectively. Therefore, the sensing module 13 can sense the user's gesture changes or contact sequence through the conductor components 100a, 100b, 100c, rather than just sensing whether the user is in contact. In other embodiments, the first antenna module 10 may include different numbers of conductor components, such as two or more.

[0050] In one embodiment, the first capacitor structures C1a and C1b may be distributed capacitor structures. For example, the distributed first capacitor structure C1a may be formed by reducing the spacing between adjacent conductor components 100a and 100b and making the edge shape of the conductor component 100a correspond to the edge shape of the conductor component 100b.

[0051] In another embodiment, the first capacitor structures C1a and C1b may be lumped capacitor structures, which are attached between the conductor components 100a, 100b, and 100c. For example, the lumped capacitor structures may be multi-layer ceramic capacitors (MLCC), but are not limited thereto.

[0052] See also Figure 3 , Figure 3 FIG. 1 is a schematic diagram of the structure of the wireless headset according to the third embodiment of the present invention. In one embodiment, the RF module 12 is coupled to the first antenna module 10 via the second capacitor structure C2a, and the RF module 12 is coupled to the second antenna module 11 via the second capacitor structure C2b.

[0053] In one embodiment, the second capacitor structures C2a and C2b may be distributed capacitor structures or lumped capacitor structures. The second capacitor structures C2a and C2b may be the same as or different from the first capacitor structures C1a and C1b.

[0054] In one embodiment, the sensing module 13 is coupled to the first antenna module 10 via the first inductor L1a, and the sensing module 13 is coupled to the second antenna module 11 via the first inductor L1b. Since the second capacitor structures C2a and C2b can isolate low-frequency signals, and the first inductors L1a and L1b can isolate high-frequency signals, the RF module 12 and the sensing module 13 will not interfere with each other, and the first antenna module 10 and the second antenna module 11 can be shared as radiators, thereby saving costs and component space.

[0055] In one embodiment, the processing module 15 is further used to determine the distance between the first external object (e.g., a human hand) and the first antenna module 10 or whether they are in contact with each other according to the first sensing signal. In other words, the wireless headset 1 of the present invention has a gesture operation function, and the user can input an operation instruction by touching the wireless headset 1.

[0056] In one embodiment, the processing module 15 is further used to determine the distance between the second external object (e.g., human ear) and the second antenna module 11 or whether they are in contact with each other according to the second sensing signal. In other words, the wireless headset 1 of the present invention has an in-ear detection function, which can detect whether the wireless headset 1 has been worn by the user.

[0057] 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 first antenna module 10 can be arranged on the flexible circuit board 40. The first antenna module 10 in this embodiment includes three rectangular conductor components, but not limited to this. The second antenna module 11 can be arranged on the flexible circuit board 41. The second antenna module 11 in this embodiment includes two triangular conductor components, but not limited to this. In other embodiments, the first antenna module 10 and the second antenna module 11 can also be arranged on the same flexible circuit board.

[0058] In one embodiment, the processing module 15 is further used to determine the contact sequence of the third external object with the first antenna module 10 and the second antenna module 11 according to the first sensing signal and the second sensing signal. The second antenna module 11 can also be used to sense gesture operations. For example, the contact sequence of the human hand with the first antenna module 10 and the second antenna module 11 represents a specific gesture. For example, touching the first antenna module 10 and the second antenna module 11 in sequence represents a first gesture, and touching the second antenna module 11 and the first antenna module 10 in sequence represents a second gesture. The processing module 15 can generate corresponding control signals according to these gestures.

[0059] In one embodiment, the antenna pattern direction of the first antenna module 10 is different from the antenna pattern direction of the second antenna module 11. For example, the antenna pattern direction of the first antenna module 10 may be downward, corresponding to the use condition when the user stores the mobile phone on the body; and the antenna pattern direction of the second antenna module 11 may be forward, corresponding to the use condition when the user holds the mobile phone in front of the face, but not limited thereto. In other embodiments, the antenna pattern directions of the first antenna module 10 and the second antenna module 11 may also be set according to different use conditions, or more second antenna modules 11 may be set.

[0060] See also Figure 5 , Figure 5 Schematic diagram of the structure of the wireless headset of the fifth embodiment of the present invention. In one embodiment, the wireless headset 1 may further include a radio frequency switch 50, which is connected between the radio frequency module 12 and the first antenna module 10 and the second antenna module 11. The radio frequency switch 50 is used to select the first antenna module 10 or the second antenna module 11 to be turned on according to the strength of the radio frequency signal received or sent by the first antenna module 10 and the second antenna module 11. For example, when the strength of the radio frequency signal received by the first antenna module 10 is large, the radio frequency switch 50 selects to turn on the circuit between the first antenna module 10 and the radio frequency module 12 to maintain better communication quality.

[0061] See also Figure 6 , Figure 6 1 is a functional block diagram of a wireless headset according to a sixth embodiment of the present invention. In one embodiment, the wireless headset 1 may further include a storage module 60, which is connected to the processing module 15 and is used to store digital information. The storage module 60 may be, for example, a storage chip, but is not limited thereto.

[0062] In one embodiment, the wireless headset 1 may further include a power module 61, which is connected to the processing module 15 and is used to supply power required for the operation of the RF module 12, the sensing module 13, the speaker module 14, the processing module 15 and other modules. The power module 61 may be, for example, a lithium battery, but is not limited thereto.

[0063] In one embodiment, the wireless headset 1 may further include a microphone module 62 , which is connected to the processing module 15 , and is used to convert external sound signals into digital sound signals.

[0064] In summary, the wireless headset of the present invention includes a first antenna module, at least one second antenna module and a radio frequency module. The first antenna module and the second antenna module can receive radio frequency signals in different directions to ensure the communication quality in various usage situations. The wireless headset of the present invention also includes a sensing module. The sensing module and the radio frequency module share the first and second antenna modules, so that the wireless headset can provide the functions of wearing detection and gesture operation without adding additional components. 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 or a microphone module to enhance the additional functions of the wireless headset.

[0065] 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 first antenna module; at least one second antenna module, wherein the antenna pattern directions of the first antenna module and the second antenna module are different so as to receive radio frequency signals from different directions; A radio frequency module, coupled to the first antenna module and the second antenna module, and configured to receive or send a radio frequency signal through the first antenna module or the second antenna module; a sensing module coupled to the first antenna module and the second antenna module, the sensing module being used to sense the capacitance value of the first parasitic capacitor of the first antenna module and generate a corresponding first sensing signal, and being used to sense the capacitance value of the second parasitic capacitor of the second antenna module and generate a corresponding second sensing signal; A speaker module for playing audio signals; and A processing module is connected to the RF module, the sensing module and the speaker module. The processing module is used to generate a control signal based on the RF signal, the first sensing signal or the second sensing signal to control the speaker module to play the audio signal corresponding to the control signal. The processing module is also used to determine the contact sequence of the third external object and the first antenna module and the second antenna module based on the first sensing signal and the second sensing signal, and generate a corresponding control signal based on the contact sequence.

2. The wireless headset according to claim 1, characterized in that: The first antenna module includes a plurality of conductor components, and the conductor components are coupled through a first capacitor structure.

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

4. The wireless headset according to claim 1, characterized in that: The radio frequency module is coupled to the first antenna module or the second antenna module 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 sensing module is coupled with the first antenna module or the second antenna module via a first inductive coupling.

7. The wireless headset according to claim 1, characterized in that: The processing module is further used to determine the distance between the first external object and the first antenna module or whether they are in contact with each other according to the first sensing signal.

8. The wireless headset according to claim 1, wherein: The processing module is further used for determining the distance between the second external object and the second antenna module or whether they are in contact with each other according to the second sensing signal.

9. The wireless headset according to claim 1, characterized in that: The first antenna module or the second antenna module is disposed on a flexible printed circuit board.

10. The wireless headset according to claim 1, wherein: The wireless headset also includes: The RF switch is connected between the RF module and the first antenna module and the second antenna module. The RF switch is used to select and turn on the first antenna module or the second antenna module according to the strength of the RF signal received or sent by the first antenna module and the second antenna module.

11. The wireless headset according to claim 1, characterized in that: The wireless headset further comprises: a storage module connected to the processing module, and the storage module is used for storing 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.

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