A true wireless earphone and a true wireless earphone system

Abstract

The present application provides a true wireless headset and a true wireless headset system, the headset includes: a pressure sensor, a capacitive sensor and a processing module; the pressure sensor and the capacitive sensor are respectively connected to the processing module; the pressure sensor is used to obtain a first signal related to pressure when it is subjected to pressure, and send the first signal to the processing module; the capacitive sensor is used to obtain a second signal related to touch when it is touched, and send the second signal to the processing module; the processing module is used to identify the current pinch operation of the headset according to the first signal and the second signal, and according to the continuous number of identified pinch operations, obtain and execute the headset operation instruction corresponding to the continuous number of pinch operations. Compared with the prior art, the true wireless headset of the present application uses a combination of capacitive sensors and pressure sensors to achieve accurate pinch operation recognition, thereby improving the user experience.

Description

Technical Field

[0001] The present application relates to the technical field of true wireless earphones, and in particular to a true wireless earphone and a true wireless earphone system. Background Art

[0002] Compared with traditional headphones, true wireless headphones eliminate the headphone wires and are small in size and easy to store and use. Compared with wired headphones, true wireless headphones are more convenient and are widely loved by business people, and have gradually become a mainstream consumer trend. For convenient charging, true wireless headphones are usually equipped with a charging box. The charging box contains a battery, a processor, and a storage slot for the headphones. When the processor detects that the headphones are in the box, the battery charges the headphones.

[0003] With the development of true wireless headset technology, true wireless headsets are emerging in an endless stream, with various shapes and rich functions. Generally, true wireless headsets are integrated with various sensors, such as capacitive sensors, pressure sensors, acceleration sensors, etc.

[0004] Currently, there are three main interaction modes for true wireless earphones: tapping, touching, and pressing. Among them, tapping is mainly achieved by the gravity sensor integrated in the earphone. When the user taps, the gravity sensor detects the acceleration of the tapping to achieve interactive control; touch uses the touch sensor to sense the touch action of the person to achieve interactive control; pressing uses the pressure sensor to sense the tiny pressure to achieve interactive control. Summary of the invention

[0005] The purpose of this application is to provide a true wireless headset and a true wireless headset system, so as to utilize a combination of a capacitive sensor and a pressure sensor to achieve precise pinch force control and enhance the user experience.

[0006] A first aspect of the present application provides a true wireless headset, comprising:

[0007] A pressure sensor, a capacitance sensor and a processing module; the pressure sensor and the capacitance sensor are connected to the processing module respectively;

[0008] The pressure sensor is used to obtain a first signal related to the pressure when subjected to pressure, and send the first signal to the processing module;

[0009] The capacitive sensor is used to obtain a second signal related to the touch when being touched, and send the second signal to the processing module;

[0010] The processing module is used to identify the current pinching operation of the earphone according to the first signal and the second signal, and obtain and execute the earphone operation instruction corresponding to the continuous number of pinching operations according to the identified continuous number of pinching operations.

[0011] Optionally, the processing module includes: a first amplifier, a first analog-to-digital conversion unit, a first comparator, a second amplifier, a second analog-to-digital conversion unit, a second comparator, a register and a host computer;

[0012] The pressure sensor is connected to the first input terminal of the first comparator through the first amplifier and the first analog-to-digital conversion unit in sequence;

[0013] The capacitance sensor is connected to the first input terminal of the second comparator via the second amplifier and the second analog-to-digital conversion unit in sequence;

[0014] The second input terminal of the first comparator and the second input terminal of the second comparator are respectively connected to the register;

[0015] The output end of the first comparator and the output end of the second comparator are respectively connected to a host computer through a communication interface.

[0016] Optionally, the pressure sensor and the capacitive sensor are integrated on a flexible printed circuit board and connected to the processing module via a connector.

[0017] Optionally, the true wireless headset further includes:

[0018] The infrared sensor is used to detect the wearing state of the headset. The infrared sensor is connected to the host computer through a communication interface so that when the headset is worn, the processing module receives the trigger signals of the pressure sensor and the capacitive sensor.

[0019] Optionally, the true wireless headset further includes: a communication module, an audio processing module and a power supply module;

[0020] The communication module, the audio processing module and the power supply module are respectively connected to the processing module, and the communication module is connected to the audio processing module.

[0021] Optionally, the pressure sensor and the capacitive sensor are arranged on the same side of the earphone handle.

[0022] Optionally, the pressure sensor and the capacitive sensor are respectively arranged on opposite sides of the earphone handle.

[0023] A second aspect of the present application provides a true wireless headset system, comprising: a true wireless headset charging box and the true wireless headset described in the first aspect.

[0024] The true wireless headset provided in the present application includes: a pressure sensor, a capacitance sensor and a processing module; the pressure sensor and the capacitance sensor are respectively connected to the processing module; the pressure sensor is used to obtain a first signal related to pressure when subjected to pressure, and send the first signal to the processing module; the capacitance sensor is used to obtain a second signal related to touch when subjected to touch, and send the second signal to the processing module; the processing module is used to identify the current pinch operation of the headset according to the first signal and the second signal, and according to the identified continuous number of pinch operations, obtain and execute the headset operation instructions corresponding to the continuous number of pinch operations. Compared with the prior art, the true wireless headset of the present application uses a combination of capacitance sensors and pressure sensors to achieve accurate pinch operation recognition, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0026] Figure 1 A schematic diagram of a true wireless headset provided in some embodiments of the present application is shown;

[0027] Figure 2 The sensing curve of the pressure sensor to a small pressure is shown;

[0028] Figure 3 A circuit diagram of a true wireless headset in this application is shown;

[0029] Figure 4 A schematic diagram of a specific true wireless headset provided by the present application is shown;

[0030] Figure 5 A schematic diagram of installing a pressure sensor and a capacitive sensor provided by the present application is shown;

[0031] Description of reference numerals:

[0032] 10 true wireless earphones; 100 pressure sensor; 200 capacitive sensor; 300 processing module; 400 infrared sensor; 101 left earphone pressure sensor; 102 left earphone capacitive sensor; 103 left earphone infrared sensor; 201 right earphone pressure sensor; 202 right earphone capacitive sensor; 203 right earphone infrared sensor. DETAILED DESCRIPTION

[0033] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0034] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which this application belongs.

[0035] Please refer to Figure 1 , which shows a schematic diagram of a true wireless headset provided by some embodiments of the present application, such as Figure 1 As shown, the true wireless headset 10 includes: a pressure sensor 100, a capacitance sensor 200 and a processing module 300. The pressure sensor 100 and the capacitance sensor 200 are respectively connected to the processing module 300. Specifically, the pressure sensor 100 and the capacitance sensor 200 can be integrated on a flexible printed circuit (FPC) and connected to the processing module 300 through a connector.

[0036] Specifically, in this embodiment, the pressure sensor 100 is used to obtain a first signal related to pressure when subjected to pressure, and send the first signal to the processing module 300; specifically, the first signal indicates the magnitude of the pressure applied to the pressure sensor, and the magnitude of the pressure indicates the magnitude of the pressure applied to the earphone.

[0037] The capacitive sensor 200 is used to obtain a second signal related to the touch when it is touched, and send the second signal to the processing module 300; specifically, the second signal is a signal triggered when the capacitive sensor is touched, and the signal is generated when the earphone is touched by, for example, a finger.

[0038] The processing module 300 is used to identify the current pinch operation of the earphone according to the first signal and the second signal, and obtain and execute the earphone operation instruction corresponding to the continuous number of pinch operations according to the identified continuous number of pinch operations.

[0039] In the present application, when the earphone is effectively pinched, the above-mentioned first signal and second signal will be generated at the same time, that is, the processing module 300 will simultaneously receive the first signal indicating the pinching force and the second signal indicating the effective touch, and then the type of pinching operation on the earphone can be determined based on the first signal and the second signal. For example, a threshold value can be set, and a pinching force less than the threshold value is defined as a light pinch, and a pinching force greater than the threshold value is defined as a heavy pinch.

[0040] Furthermore, the present application also defines the user's operation instructions for the headset according to the number of consecutive pinch operations of the same type. For example, a light pinch once means pausing the playback, a light pinch three times in a row means playing the next song, and a heavy pinch three times in a row means turning on the transparent transmission function.

[0041] In this embodiment, a capacitive sensor and a pressure sensor are used to simultaneously detect the user's pinching operation on the earphone. Through the combination of the two sensors, the user's pinching operation on the earphone is effectively identified, thereby enabling the user to interactively control the earphone through the pinching operation.

[0042] According to some embodiments of the present application, Figure 1 As shown, the true wireless headset 10 also includes:

[0043] Infrared sensor 400, infrared sensor 400 is connected to processing module 300. Infrared sensor 400 is used to detect the wearing state of the headset. When the headset is in the wearing state, pressure sensor 100 and capacitance sensor 200 are in a triggerable state and can detect the user's pinching operation; when the headset is not in the wearing state, pressure sensor 100 and capacitance sensor 200 are not triggerable and cannot detect the user's pinching operation.

[0044] According to some embodiments of the present application, Figure 1 As shown, the true wireless headset 10 also includes:

[0045] Communication module, audio processing module and power supply module;

[0046] The communication module, the audio processing module and the power supply module are respectively connected to the processing module via an I2C bus, and the communication module and the audio processing module are connected via an I2S bus.

[0047] The audio processing module is used to process the audio related to the microphone and the speaker, and the relevant methods can be used, which will not be described in detail in this application.

[0048] The communication module may be a Bluetooth module, which is not limited in this application.

[0049] In practical applications, the key components involved in this application are mainly the combination of pressure sensors and capacitive sensors. The pressure sensor and the capacitive sensor are integrated on the FPC board, and then connected to the processing module (such as the microprocessor MCU) through a connector. The signal collected by the sensor is sent to the MCU. The ADC integrated in the MCU can convert the collected analog signal into a digital signal, and determine the user's pinching operation through a preset program, thereby realizing the headset's recognition of the user's operation.

[0050] Figure 2The pressure sensor's sensing curve for tiny pressure is shown. Within a certain pressure range, the user's pinching strength can be well identified through the pressure sensor and the MCU preset pressure conversion program. However, the pressure applied by different users is different. For example, men generally apply more pressure than women. If the pressure benchmarks applied by users are the same, the sensor can identify the user's operating intention by identifying different pressures. However, in reality, different people have subjective differences in their perception of the amount of pressure applied during operation. In order to solve this problem, this application uses capacitive sensors to coordinate the user's touch actions, thereby realizing the recognition of operations with different pressures.

[0051] Specifically, Figure 3 The circuit diagram of the earphone in this application is shown as follows: Figure 3 As shown, the processing module 300 includes: a first amplifier, a first analog-to-digital conversion unit (ADC), a first comparator, a second amplifier, a second analog-to-digital conversion unit (ADC), a second comparator, a register and a host computer;

[0052] The pressure sensor is connected to the first input terminal of the first comparator through the first amplifier and the first analog-to-digital conversion unit in sequence;

[0053] The capacitance sensor is connected to the first input terminal of the second comparator via the second amplifier and the second analog-to-digital conversion unit in sequence;

[0054] The second input terminal of the first comparator and the second input terminal of the second comparator are respectively connected to the register;

[0055] The output end of the first comparator and the output end of the second comparator are respectively connected to a host computer through a communication interface.

[0056] Specifically, the infrared sensor 400 is connected to the host computer via a communication interface.

[0057] like Figure 3 As shown in the figure, when there is a slight pressure on the earphone, the pressure sensor will be squeezed and produce a tiny voltage change. This tiny voltage change is amplified and converted into an analog digital signal through the ADC. After the first signal is converted into a digital signal, it is compared with the preset value in the register. If the value is greater than the preset value, it is considered to be a valid press. If it is less than the preset value, it is automatically ignored. A valid press will generate a signal, which notifies the host computer to perform the corresponding operation through the communication interface.

[0058] The capacitive sensor realizes touch sensing by sensing the change of capacitance. When the capacitance of the capacitive sensor changes, a small current will be generated in the detection circuit. The small current is amplified by the amplifier at the back end and converted into an analog digital signal through the ADC. After the second signal is converted into a digital signal, it is compared with the preset value in the register. If the value is greater than the preset value, it is considered to be a valid touch.

[0059] In this embodiment, a capacitive sensor and a pressure sensor are used for detection simultaneously. Through the combination of the two sensors, light pinch and heavy pinch are effectively identified, thereby realizing interactive control of light pinch and heavy pinch.

[0060] By combining the pressure sensor and the capacitive sensor to identify the user's pinching action, different pressure operations can be identified. Through the preset program and the user's operation, light pinch once, light pinch twice, light pinch three times, heavy pinch once, heavy pinch twice, heavy pinch three times, and long press operations can be realized, which enriches the user's operation of the headset, solves the problems of easy false touches through touch operation alone, and the single recognition of pinching action alone, and improves the user's interactive experience with the headset. The following Table 1 is a headset interactive control logic provided by this application.

[0061] In order to avoid accidental triggering by users during use, this application uses infrared sensors for wearing detection, and the pressure sensor and capacitive sensor can only be triggered when they are worn.

[0062] Table 1: Interaction control logic

[0063]

[0064] The true wireless headset provided in this embodiment includes: a pressure sensor, a capacitance sensor and a processing module; the pressure sensor and the capacitance sensor are respectively connected to the processing module; the pressure sensor is used to obtain a first signal related to pressure when subjected to pressure, and send the first signal to the processing module; the capacitance sensor is used to obtain a second signal related to touch when subjected to touch, and send the second signal to the processing module; the processing module is used to identify the current pinching operation of the headset according to the first signal and the second signal, and according to the identified continuous number of pinching operations, obtain and execute the headset operation instructions corresponding to the continuous number of pinching operations. Compared with the prior art, the true wireless headset of this application uses a combination of capacitance sensors and pressure sensors to achieve precise pinching force control, thereby improving the user experience.

[0065] The present application also provides a true wireless headset system, including: a true wireless headset charging box and the true wireless headset 10 described in the above embodiment.

[0066] In actual applications, true wireless earphones appear in pairs, namely left earphone and right earphone, and the earphones include earphone heads and earphone handles.

[0067] Figure 4 FIG. 1 is a schematic diagram of a specific true wireless headset provided by the present application, such as Figure 4 As shown, the left earphone and the right earphone are respectively integrated with a pressure sensor and a capacitive sensor, wherein 101 is a pressure sensor for the left earphone, 102 is a capacitive sensor for the left earphone, and 103 is an infrared sensor for the left earphone; 201 is a pressure sensor for the right earphone, 202 is a capacitive sensor for the right earphone, and 203 is an infrared sensor for the right earphone.

[0068] According to some embodiments of the present application, the pressure sensor and the capacitive sensor may be disposed on the same side of the earphone handle, such as Figure 4 The left earphone pressure sensor 101 and the left earphone capacitance sensor 102 are shown in FIG.

[0069] According to some embodiments of the present application, the pressure sensor and the capacitive sensor may be respectively disposed on opposite sides of the earphone handle, such as Figure 5 The pressure sensor 100 and the capacitance sensor 200 shown in the figure, the pressure sensor 100 is located on the first side of the earphone handle, and the capacitance sensor 200 is located on the second side, and the first side and the second side are opposite sides or adjacent sides.

[0070] In actual applications, the pressure sensor and the capacitive sensor are respectively assembled to the inner shell of the earphone handle through FPC. In order to avoid accidental touching of the face when the earphone is worn, the FPC with integrated capacitive sensor and the FPC with integrated pressure sensor are respectively assembled to the left and right sides of the earphone handle. The left and right sides are defined relative to the face side.

[0071] The pressure sensors and capacitive sensors involved in this application are distributed on opposite sides or adjacent sides of the ear handle. According to user needs, the pressure sensors and touch sensors can also be designed on the same side of the ear handle, and this application does not limit this.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application.

Claims

1. A true wireless headset, It is characterized in that include: Pressure sensor, capacitance sensor, processing module, communication module, audio processing module and power supply module; The pressure sensor and the capacitance sensor are respectively connected to the processing module; the communication module, the audio processing module and the power supply module are respectively connected to the processing module, and the communication module is connected to the audio processing module; The pressure sensor is used to obtain a first signal related to the pressure when subjected to pressure, and send the first signal to the processing module; The capacitive sensor is used to obtain a second signal related to the touch when being touched, and send the second signal to the processing module; The processing module is used to identify the pinch operation currently applied to the earphone according to the first signal and the second signal, and acquire and execute an earphone operation instruction corresponding to the continuous number of pinch operations according to the identified continuous number of pinch operations; The processing module includes: a first amplifier, a first analog-to-digital conversion unit, a first comparator, a second amplifier, a second analog-to-digital conversion unit, a second comparator, a register and a host computer; The pressure sensor is connected to the first input terminal of the first comparator through the first amplifier and the first analog-to-digital conversion unit in sequence; The capacitance sensor is connected to the first input terminal of the second comparator via the second amplifier and the second analog-to-digital conversion unit in sequence; The second input terminal of the first comparator and the second input terminal of the second comparator are respectively connected to the register; The output end of the first comparator and the output end of the second comparator are respectively connected to a host computer through a communication interface; The true wireless headset also includes: An infrared sensor, used to detect the wearing state of the headset, the infrared sensor is connected to the host computer through a communication interface, so that when the headset is worn, the processing module receives trigger signals from the pressure sensor and the capacitive sensor; The processing module is specifically used to convert the first signal into a digital signal and compare it with a first preset value. If the value is greater than the first preset value, it is considered to be a valid press; convert the second signal into a digital signal and compare it with a second preset value. If the value is greater than the second preset value, it is considered to be a valid touch.

2. The true wireless headset according to claim 1, It is characterized in that The pressure sensor and the capacitance sensor are integrated on a flexible circuit board and connected to the processing module via a connector.

3. The true wireless headset according to claim 1, It is characterized in that The pressure sensor and the capacitive sensor are arranged on the same side of the earphone handle.

4. The true wireless headset according to claim 1, It is characterized in that The pressure sensor and the capacitive sensor are respectively arranged on opposite sides of the earphone handle.

5. A true wireless headset system, It is characterized in that It comprises a true wireless earphone charging box and the true wireless earphone according to any one of claims 1 to 4.

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