Separated headphone and communication method thereof

Abstract

The invention provides a separated headphone based on visible light communication, which comprises a left headphone shell and a right headphone shell, a first data conversion module, a second data conversion module and a data processing module are arranged in each of the left headphone shell and the right headphone shell, and a light guide fiber is arranged between the left headphone shell and the right headphone shell; wherein the first data conversion module is used for converting to-be-transmitted data into transmission data in an optical signal form, so that the transmission data are transmitted out through an optical fiber; and the second data conversion module is used for receiving the transmission data in the optical signal form through the optical fiber and converting the transmission data in the optical signal form into the transmission data in the analog digital signal form required by the data processing module. According to the invention, through the combination of the photoelectric signal conversion device and the optical fiber, signal transmission can be carried out without electric contact between the two earphone shells of the headphone, so that the design of the headphone is completely closed, and the problem of damage caused by liquid entering is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of detachable headphone, and more specifically, to a detachable headphone based on visible light communication and a communication method thereof. Background Art

[0002] As consumer electronic products become more mature, there are more and more types, such as various types of headphones. In order to facilitate replacement, split headphones have also appeared on the market. The left and right earphone shells and the headband can be separated separately, which is convenient for later replacement and repair.

[0003] Although split earphones are easy to replace, because the left and right earphone shells and the three modules of the headband are separated, there are contact gaps between the modules due to the need for communication, which can easily lead to the entry of liquids such as sweat, causing signal short circuit and earphone damage.

[0004] Therefore, how to solve the sealing problem of headphone equipment without affecting communication is one of the urgent problems to be solved in the field of headphones. Summary of the invention

[0005] In view of the above problems, the purpose of the present invention is to provide a detachable headset based on visible light communication, applying optical communication to the detachable headset so that no electrical signal is transmitted between the contact points of the headset device, thereby avoiding contact gaps between modules caused by electrical signal connections and achieving good sealing of the headset device.

[0006] According to one aspect of the present invention, there is provided a detachable headphone based on visible light communication, comprising a left headphone shell and a right headphone shell, wherein a first data conversion module, a second data conversion module and a data processing module are arranged in the left headphone shell and the right headphone shell, and an optical fiber is arranged between the left headphone shell and the right headphone shell; wherein,

[0007] The first data conversion module is used to convert the data to be transmitted into transmission data in the form of an optical signal so as to be transmitted through the optical fiber;

[0008] The second data conversion module is used to receive the transmission data in the form of optical signals through the optical fiber, and convert the transmission data in the form of optical signals into transmission data in the form of analog digital signals required by the data processing module.

[0009] In addition, an optional technical solution is that the second data conversion module includes a photoelectric conversion module and an analog-to-digital conversion module; wherein,

[0010] The photoelectric conversion module is used to convert transmission data in the form of optical signals into transmission data in the form of electrical signals;

[0011] The analog-to-digital conversion module is used to convert the transmission data in the form of electrical signals into transmission data in the form of analog digital signals.

[0012] In addition, an optional technical solution is that the first data conversion module is an LED module, and the LED module converts the data to be transmitted into a PWM light signal; and / or,

[0013] The second data conversion module is a photodiode, which is turned on and off according to the PWM light signal, and converts the transmission data in the form of the light signal into the transmission data in the form of the electrical signal by turning on and off the photodiode; and / or,

[0014] The analog-to-digital conversion module is a comparator.

[0015] In addition, an optional technical solution is to further include an audio playing module for playing the audio data processed by the data processing module.

[0016] In addition, an optional technical solution is to provide a Bluetooth IC in the left earphone shell or the right earphone shell.

[0017] In addition, an optional technical solution is to provide a transparent optical window on the surface of the left earphone shell and the right earphone shell respectively; wherein the optical window is used to physically isolate the inner and outer spaces of the left earphone shell and the right earphone shell.

[0018] In addition, an optional technical solution is that the end of the optical fiber is close to and faces the optical window; and the photodiode is arranged on the inner side of the optical window.

[0019] In addition, an optional technical solution is to further include an adjusting resistor for adjusting the comparison voltage of the comparator.

[0020] On the other hand, an embodiment of the present invention further provides a left and right earphone communication method of a detachable headset, wherein the detachable headset based on visible light communication as described above is used to perform communication between the left earphone and the right earphone, and the method comprises the following steps:

[0021] Converting the data to be transmitted from the left / right earphone into transmission data in the form of an optical signal through a first data conversion module;

[0022] The transmission data in the form of optical signals are transmitted to the second data conversion module of the right / left earphone via the optical fiber to convert the transmission data in the form of optical signals into transmission data in the form of analog digital signals.

[0023] In addition, an optional technical solution is to convert the transmission data in the form of an optical signal into transmission data in the form of an analog digital signal, including:

[0024] The transmission data in the form of an optical signal is converted into the transmission data in the form of an electrical signal by means of a photoelectric conversion module;

[0025] The transmission data in the form of electrical signals is converted into transmission data in the form of analog digital signals by an analog-to-digital conversion module.

[0026] The above-mentioned detachable headphones based on visible light communication, through a combination of photoelectric signal conversion devices and optical fibers, use optical communication to establish communication between two different parts of the product (such as the left and right earphones and the headband), which can achieve no electrical signal transmission between the contact points, thereby avoiding contact gaps between modules caused by electrical signal connections, and effectively avoiding the problem of short circuits caused by liquid entering the modules.

[0027] In order to achieve the above and related purposes, one or more aspects of the present invention include the features that will be described in detail later. The following description and the accompanying drawings describe some exemplary aspects of the present invention in detail. However, these aspects indicate only some of the various ways in which the principles of the present invention can be used. In addition, the present invention is intended to include all these aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] By referring to the following description in conjunction with the accompanying drawings, and with a more comprehensive understanding of the present invention, other objects and results of the present invention will become more apparent and easy to understand. In the accompanying drawings:

[0029] Figure 1 A circuit principle block diagram of a detachable headset based on visible light communication according to an embodiment of the present invention;

[0030] Figure 2 A schematic diagram of the physical structure of a detachable headset based on visible light communication according to an embodiment of the present invention;

[0031] Figure 3 A schematic diagram of a flow chart of a communication method for a detachable headset according to an embodiment of the present invention;

[0032] Figure 4 FIG. 4 is a communication logic diagram of a detachable headset according to an embodiment of the present invention.

[0033] The same reference numerals throughout the drawings indicate similar or corresponding features or functions. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In the following description, for the purpose of illustration, in order to provide a comprehensive understanding of one or more embodiments, many specific details are set forth. However, it is apparent that these embodiments may also be implemented without these specific details. In other examples, for ease of describing one or more embodiments, known structures and devices are shown in the form of block diagrams.

[0036] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product, or server that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or devices.

[0037] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those generally understood by those skilled in the art in the art to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless defined as herein.

[0038] With the development of technology, optical fiber technology has become more mature, and the development of plastic optical fiber has greatly promoted the use of optical fiber in communications in all walks of life. Plastic optical fiber can not only transmit light in a bent state, but also has the advantages of good controllability, easy processing, convenient use, low price, etc. It can be applied to more complex and variable products, and can be used for larger products such as test fixtures. Therefore, in order to solve the problem of signal transmission distortion caused by the long distance between several electronic devices / modules that are physically separated from each other, the present invention uses optical fiber as the communication medium between classification devices, and avoids the contact gap between modules caused by electrical signal connection by non-contact data transmission, so as to truly achieve the sealing of the headphone device.

[0039] In order to solve the problems in the prior art, the present invention converts the data to be transmitted into an optical signal form suitable for optical fiber transmission, and then converts the data in the optical signal form into the required data form through photoelectric conversion and other processing at the data receiving end, thereby realizing communication between two physically separated functional modules / electronic devices in a non-contact manner.

[0040] In order to describe in detail the contents of the detachable headset based on visible light communication and the communication method thereof of the present invention, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0041] Figure 1 The circuit principle of a detachable headset based on visible light communication according to an embodiment of the present invention is shown. Figure 2 The physical structure of a separate headset based on visible light communication according to an embodiment of the present invention is shown.

[0042] like Figure 1 and Figure 2 As shown together, the detachable headphone based on visible light communication provided in this embodiment mainly includes a left earphone shell 1, a right earphone shell 2, and an optical fiber 3 arranged between the left earphone shell and the right earphone shell to realize optical information transmission. Among them, the left earphone shell 1 and the right earphone shell 2 are almost completely symmetrical structures, and the arrangement of their internal components is basically the same; the optical fiber 3 can be embedded in the headband 4. In this embodiment, a first data conversion module, a second data conversion module and a data processing module are arranged in the left earphone shell and the right earphone shell. The first data conversion module and the second data conversion module cooperate with each other to reliably transmit the data to be transmitted between the two separated modules of the left earphone and the right earphone through the optical fiber.

[0043] The first data conversion module is used to convert the data to be transmitted into transmission data in the form of optical signals, so as to transmit the data through the optical fiber. In theory, the first data conversion module can adopt any device that can emit visible light. The second data conversion module is used to receive the transmission data in the form of optical signals through the optical fiber, and convert the transmission data in the form of optical signals into transmission data in the form of analog digital signals required by the data processing module.

[0044] Specifically, the second data conversion module further includes a photoelectric conversion module and an analog-to-digital conversion module; wherein the photoelectric conversion module is used to convert transmission data in the form of an optical signal into transmission data in the form of an electrical signal, and in theory any photoelectric conversion device that can convert an optical signal into an electrical signal can be used; the analog-to-digital conversion module is used to convert transmission data in the form of an electrical signal output by the photoelectric conversion module into transmission data in the form of an analog digital signal, and in theory any device that can convert an electrical signal into an analog digital signal can be used.

[0045] More specifically, as an example, an LED module is used as the first data conversion module, and the LED module can convert the data to be transmitted into a PWM light signal.

[0046] In photodetector technology, a photodiode is a semiconductor device that converts light signals into electrical signals. It uses the PN junction characteristics in semiconductors to generate photogenerated carriers (electron-hole pairs) under light irradiation, thereby forming a photocurrent. Photodiodes have the advantages of simple structure, small size, high sensitivity, and fast response speed. PIN photodiodes are a new type of photodetector developed on the basis of ordinary photodiodes. They are composed of highly doped p-parts, i-parts, and n-parts, and have higher photoelectric conversion efficiency and response speed.

[0047] Therefore, in a specific embodiment of the present invention, a photodiode is used as a photoelectric conversion module, and further, a PIN photodiode is used as a photoelectric conversion module. The photodiode (or PIN photodiode) is turned on and off according to the PWM light signal converted by the LED module, and the transmission data in the form of a light signal transmitted by the optical fiber is converted into the transmission data in the form of an electrical signal through the conduction and closing of the photodiode.

[0048] The analog-to-digital conversion module can use a comparator. In the process of converting the transmission data in the form of an electrical signal into the transmission data in the form of an analog digital signal through the comparator, the comparison voltage of the comparator can also be adjusted by a resistor. Specifically, if the input voltage of the positive input terminal of the comparator (the voltage input from the photodiode terminal) is about Vcc, which is greater than the reference voltage Vref, the comparator outputs a high level to the central processing unit; if the input voltage of the positive input terminal of the comparator (the voltage input from the photodiode terminal) is less than the reference voltage Vref, the comparator outputs a low level to the central processing unit. In this way, the output continues, and a digital signal transmitted to the central processing unit is formed according to the transmission data in the form of an electrical signal converted by the photodiode.

[0049] It should be noted that Figure 1 The layout in the circuit principle block diagram is only an exemplary description. In the specific application process, any required impedance resistor can be flexibly selected according to the specific application conditions of the comparator, resistor, reference voltage, etc. In addition, in the above embodiment, the value of Vref is determined by the impedance between different comparators, charging diodes, and resistors. If different components are selected, the value of Vref may also be different.

[0050] according to Figure 1 As shown in the schematic diagram of the circuit principle of the detachable headset based on visible light communication, it can be seen that in this embodiment, the detachable headset based on visible light communication mainly includes the following seven parts:

[0051] 1. Optical fiber is used to transmit light waves and various optical signals. It consists of a highly transparent core material with a high refractive index and a surrounding skin material with a low refractive index. This structure allows light to be reflected into the optically dense medium at the interface, so that the light is transmitted forward through repeated reflections in the optical fiber core. Plastic optical fiber is widely used in various occasions because of its good controllability, easy processing, convenient use, low price, etc. It can effectively transmit light even in a bent state. Here, it mainly guides LED light to the ambient light sensor, thereby reducing light loss and adapting to changing products and test fixtures.

[0052] 2. A data processor is provided in one of the earphone shells (such as Figure 1 Inside the left earphone shell) is a device with logic processing and signal processing;

[0053] 3. Photodiode, which mainly converts light signals into electrical signals;

[0054] 4. The comparator mainly processes the electrical signal converted by the photodiode and converts it into a digital signal for transmission to the data processor;

[0055] 5. LED module mainly integrates functional modules (such as Figure 1 The Bluetooth IC module in the right earphone shell shown in the figure) converts the data to be transmitted into a PWM optical signal for transmission;

[0056] 6. A Bluetooth IC module is provided in at least one earphone shell (such as Figure 1 The right earphone shell shown in the figure has Bluetooth function, logic processing, signal processing and other functions;

[0057] 7. An audio playback module, which has functions such as data processing conversion and power amplification, and is used to play the audio data processed by the data processing module.

[0058] In addition, in order to better realize light conduction between the left earphone shell and the right earphone shell, in a specific embodiment of the present invention, a transparent optical window 5 is respectively provided on the surface of the left earphone shell and the right earphone shell. The optical window 5 can be sealed and fixed to the surface of the earphone shell by bonding, fitting, etc., so as to physically isolate the inner and outer spaces of the left earphone shell and the right earphone shell, and at the same time allow the light transmitted by the optical fiber to enter the earphone shell smoothly and unimpeded, so as to be received by the photoelectric conversion module (such as a photodiode) of the earphone shell.

[0059] The end of the optical fiber is close to and faces the optical window, and the photodiode is arranged on the inner side of the optical window to better receive the optical signal transmitted by the optical fiber.

[0060] Since the communication between the left earphone shell and the right earphone shell is transmitted by optical signals, a transparent optical window is left inside the earphone shell or on the surface of the earphone shell and completely isolated from the outside, such as Figure 2 As shown, liquid cannot enter the earphone, which can effectively prevent the earphone from short-circuiting due to liquid entering.

[0061] Corresponding to the above-mentioned detachable headset based on visible light communication, the present invention also provides a communication method for the detachable headset to perform communication between a left earphone and a right earphone. Figure 3 FIG. 4 shows a flow chart of a communication method for a detachable headset according to an embodiment of the present invention. Figure 3 As shown, the communication method of the detachable headset provided in this embodiment mainly includes the following steps:

[0062] S310: Converting the data to be transmitted from the left / right earphone into transmission data in the form of an optical signal through a first data conversion module;

[0063] S320: Transmitting the transmission data in the form of optical signals to a second data conversion module of the right / left earphone via an optical fiber to convert the transmission data in the form of optical signals into transmission data in the form of analog digital signals.

[0064] The step of converting the transmission data in the form of an optical signal into the transmission data in the form of an analog digital signal specifically includes:

[0065] S321: converting the transmission data in the form of an optical signal into the transmission data in the form of an electrical signal by a photoelectric conversion module;

[0066] S322: Convert the transmission data in the form of electrical signals into transmission data in the form of analog digital signals through an analog-to-digital conversion module.

[0067] Figure 4 The communication logic of the separate headphone according to the embodiment of the present invention is shown.

[0068] like Figure 4 As shown, after the headphone is powered on, a communication connection is first established between the left earphone shell and the right earphone shell.

[0069] Specifically, the Bluetooth IC of the right earphone shell converts the handshake signal into a PWM signal, controls the on and off of the LED light to emit light of a specific timing, converts the handshake signal in the form of an electrical signal into a handshake signal in the form of an optical signal, and then transmits it to the photodiode of the left earphone shell through the optical fiber; the photodiode is turned on or off under the control of the handshake signal, thereby converting the handshake signal in the form of an optical signal into a handshake signal in the form of an electrical signal; the handshake signal in the form of an electrical signal is transmitted to the comparator, and the comparator outputs high and low level signals according to the handshake signal in the form of an electrical signal, thereby converting the handshake signal in the form of an electrical signal into a handshake signal in the form of an analog digital signal and transmitting it to the data processor of the left earphone, wherein the two resistors R1 and R2 are mainly used to adjust the size of the comparison voltage to avoid signal conversion errors caused by excessive or too small comparison voltage; at this point, the left earphone shell receives the handshake signal, successfully shakes hands with the right earphone shell, and a communication connection is established between the left earphone shell and the right earphone shell.

[0070] Similarly, after the communication connection is established, the right earphone shell transmits the audio data received by its Bluetooth IC to the left earphone shell for playback in the same way of electrical signal-optical signal-electrical signal;

[0071] Similarly, the left earphone shell transmits signals to the right earphone shell in the same way.

[0072] It can be seen from the above embodiments that the detachable headset based on visible light communication and the communication method thereof provided by the present invention realizes an electrical signal-optical signal-electrical signal communication mode between the two earphone shells of the headset through the combination of a photoelectric signal conversion device (LED module, photodiode comparator, etc.) and an optical fiber, so that the two earphone shells of the headset can transmit signals without electrical contact, thereby making the design of the headset completely closed and avoiding the problem of damage caused by liquid entry.

[0073] As described above with reference to the accompanying drawings, the detachable headset based on visible light communication and the communication method thereof according to the present invention are described by way of example. However, those skilled in the art should understand that various improvements can be made to the detachable headset based on visible light communication and the communication method thereof proposed by the present invention without departing from the content of the present invention. Therefore, the protection scope of the present invention should be determined by the content of the attached claims.

Claims

1. A split headphone based on visible light communication, comprising a left earphone shell and a right earphone shell, characterized in that: A first data conversion module, a second data conversion module and a data processing module are arranged in the left earphone shell and the right earphone shell, and an optical fiber is arranged between the left earphone shell and the right earphone shell; wherein, The first data conversion module is used to convert the data to be transmitted into transmission data in the form of an optical signal so as to be transmitted through the optical fiber; The second data conversion module is used to receive the transmission data in the form of optical signals through the optical fiber, and convert the transmission data in the form of optical signals into transmission data in the form of analog digital signals required by the data processing module.

2. The detachable headset based on visible light communication according to claim 1, characterized in that: The second data conversion module includes a photoelectric conversion module and an analog-to-digital conversion module; wherein, The photoelectric conversion module is used to convert transmission data in the form of optical signals into transmission data in the form of electrical signals; The analog-to-digital conversion module is used to convert the transmission data in the form of electrical signals into transmission data in the form of analog digital signals.

3. The detachable headset based on visible light communication according to claim 2, characterized in that: The first data conversion module is an LED module, and the LED module converts the data to be transmitted into a PWM light signal; and / or, The photoelectric conversion module is a photodiode, which is turned on and off according to the PWM light signal, and the transmission data in the form of the light signal is converted into the transmission data in the form of the electrical signal by turning on and off the photodiode; and / or, The analog-to-digital conversion module is a comparator.

4. The detachable headset based on visible light communication according to any one of claims 1 to 3, characterized in that: It also includes an audio playing module for playing the audio data processed by the data processing module.

5. The detachable headset based on visible light communication according to any one of claims 1 to 3, characterized in that: A Bluetooth IC is arranged in the left earphone shell or the right earphone shell.

6. The detachable headset based on visible light communication according to claim 3, characterized in that: A transparent optical window is respectively provided inside or on the surface of the left earphone shell and the right earphone shell; wherein, The optical window is used to physically isolate the inner and outer spaces of the left earphone shell and the right earphone shell.

7. The detachable headset based on visible light communication according to claim 6, characterized in that: The end of the optical fiber is close to and faces the optical window; The photodiode is arranged on the inner side of the optical window.

8. The detachable headset based on visible light communication according to claim 3, characterized in that: It also includes an adjusting resistor for adjusting the comparison voltage of the comparator.

9. A communication method for left and right earphones of a split headphone, characterized in that: Using the split headphone based on visible light communication as described in any one of claims 1 to 8 to communicate between the left headphone and the right headphone, the method comprising the following steps: Converting the data to be transmitted from the left / right earphone into transmission data in the form of an optical signal through a first data conversion module; The transmission data in the form of optical signals are transmitted to the second data conversion module of the right / left earphone via the optical fiber to convert the transmission data in the form of optical signals into transmission data in the form of analog digital signals.

10. The communication method of the detachable headset according to claim 9, characterized in that: Converting the transmission data in the form of optical signals into transmission data in the form of analog digital signals comprises: The transmission data in the form of an optical signal is converted into the transmission data in the form of an electrical signal by means of a photoelectric conversion module; The transmission data in the form of electrical signals is converted into transmission data in the form of analog digital signals by an analog-to-digital conversion module.

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