VR headband with charging and discharging, audio playing and audio switching functions and control circuit

Abstract

The utility model discloses a VR headband with charging and discharging, audio playing and audio switching functions and a control circuit. The VR headband comprises a headband body, earphones, an electric power storage assembly and a transmission line, wherein the earphones, the electric power storage assembly and the transmission line are arranged on the headband body; the control circuit comprises a charging circuit, a discharging circuit, an audio circuit and an audio switching circuit; the input and the output of the charging circuit are respectively connected with the Type-C connector and the electric power storage assembly; the input and output of the discharge circuit are respectively connected with the power storage assembly and the transmission line; the input and the output of the audio circuit are respectively connected with the VR head-mounted display and the earphone; the input end of the audio switching circuit is connected with an audio change-over switch on the VR headband, the audio change-over switch is used for switching a control signal of the audio switching circuit, and the output end of the audio switching circuit is connected with an audio power supply of the earphone and switches on and off the audio power supply through the control signal. The VR headband provided by the utility model integrates the functions of charging and discharging, audio transmission and playing switching between the inner loudspeaker and the earphone, and has the advantage of integrating multiple functions so as to meet the requirements of customers.

Description

Technical Field

[0001] The utility model relates to the technical field of VR accessories, and particularly relates to a VR headband and a control circuit with functions of charging and discharging, audio playing and audio switching. Background Technique

[0002] Virtual Reality (VR) technology is a computer simulation technology that simulates an environment to experience a virtual world. The display principle of a head-mounted virtual reality display device is that the left and right eyes of a person respectively obtain two images of the same object with image differences generated by a display system, thereby generating a stereoscopic effect, which is also called a VR headset.

[0003] With the demand for multi-scenario use of VR devices, it is required that VR headbands and other accessory products can realize the functions of charging, audio transmission and playing for it; however, the functions of current accessory products are single, usually only having charging or only having audio playing. Content of the Utility Model

[0004] The purpose of the utility model is to provide a VR headband and a control circuit with functions of charging and discharging, audio playing and audio switching, aiming to solve the problem of single function of existing VR headbands.

[0005] To solve the above technical problems, the purpose of the utility model is realized through the following technical solutions: providing a control circuit with functions of charging and discharging, audio playing and audio switching, which is applied to a VR headband of a VR headset. The VR headband includes a headband body, and a headset, a power storage component and a transmission line arranged on the headband body; the control circuit includes:

[0006] A charging circuit, the input end of the charging circuit is connected to a set Type-C connector, and the output end of the charging circuit is connected to the power storage component;

[0007] A discharging circuit, the input end of the discharging circuit is connected to the power storage component, and the output end of the discharging circuit is connected to the transmission line;

[0008] An audio circuit, the input end of the audio circuit is connected to the VR headset, and the output end of the audio circuit is connected to the headset;

[0009] An audio switching circuit, the input end of the audio switching circuit is connected to an audio switching switch arranged on the VR headband. The audio switching switch is used to switch the control signal of the audio switching circuit, and the output end of the audio switching circuit is connected to the audio power supply of the headset and turns on and off the audio power supply through the control signal.

[0010] Further, the charging circuit is at least composed of a switching transistor Q2, a switching transistor Q4, and a switching transistor Q6 connected in sequence; the input end of the switching transistor Q2 is connected to the Type-C connector, and the output end of the switching transistor Q6 is connected to the battery cell of the power storage component.

[0011] Further, the input end of the switching transistor Q2 includes a VBUS2 terminal, and the VBUS2 terminal of the switching transistor Q2 is connected to the VBUS2 terminal of the Type-C connector; the output end of the switching transistor Q6 includes a BATT+ terminal, and the BATT+ terminal of the switching transistor Q6 is connected to the BATT+ terminal of the battery cell of the power storage component.

[0012] Further, the discharging circuit is at least composed of a switching transistor Q5, a switching transistor Q3, and a switching transistor Q1 connected in sequence; the input end of the switching transistor Q5 is connected to the battery cell of the power storage component, and the output end of the switching transistor Q1 is connected to the transmission line.

[0013] Further, the battery cell of the power storage component includes a BATT+ terminal, and the BATT+ terminal of the battery cell of the power storage component is connected to the BATT+ terminal of the switching transistor Q5; the output end of the switching transistor Q1 includes a VBUS4 terminal, and the VBUS4 terminal of the switching transistor Q1 is connected to the VBUS4 terminal of the transmission line.

[0014] Further, the audio circuit is at least composed of a transmission line and a chip U3; the input end of the transmission line is connected to the VR headset, the output end of the transmission line is connected to the input end of the chip U3, and the output end of the chip U3 is connected to the earphone.

[0015] Further, the UD+ terminal and the UD− terminal of the transmission line are used to receive the audio coding signal output by the VR headset, and the output end of the transmission line includes a UD+ terminal and a UD− terminal for outputting the audio coding signal to the chip U3. The chip U3 converts the audio coding signal into an analog signal. The output end of the chip U3 includes a first pin to a fourth pin and is used to output the analog signal to the earphone; wherein, the chip U3 is an AB136D chip.

[0016] Further, the audio switching circuit is at least composed of an audio switching switch, a transmission line, a chip U2, and a chip U6 connected in sequence; the audio switching switch is used to switch the off signal and the on signal; the off signal or the on signal is input into the transmission line and sequentially passes through the chip U2 and the chip U6 for signal switching, and the earphone is turned off or on.

[0017] Further, the chip U2 is an MCU micro control unit; the model of the chip U6 is an LP6450B6F chip.

[0018] An embodiment of the present utility model further provides a VR headband with charging and discharging, audio playing, and audio switching functions, including:

[0019] A headband body;

[0020] A power storage component, arranged on the rear side of the headband body, the power storage component includes a circuit board and a battery cell connected to the circuit board;

[0021] A Type-C connector, arranged on the circuit board;

[0022] A transmission line, connected to the circuit board;

[0023] A pair of headphones, arranged on the headband body;

[0024] The Type-C connector is used to externally connect a power source to input voltage to the battery cell;

[0025] The transmission line is used to connect a VR headset installed on the front side of the headband body to supply power and transmit signals to the VR headset;

[0026] The pair of headphones is used to connect to the VR headset to receive audio signals.

[0027] An embodiment of the present utility model provides a control circuit with charging and discharging, audio playing, and audio switching functions, applied to the VR headband of a VR headset. The VR headband includes a headband body and a pair of headphones, a power storage component, and a transmission line arranged on the headband body; the control circuit includes: a charging circuit, the input end of the charging circuit is connected to the provided Type-C connector, and the output end of the charging circuit is connected to the power storage component; a discharging circuit, the input end of the discharging circuit is connected to the power storage component, and the output end of the discharging circuit is connected to the transmission line; an audio circuit, the input end of the audio circuit is connected to the VR headset, and the output end of the audio circuit is connected to the pair of headphones; an audio switching circuit, the input end of the audio switching circuit is connected to an audio switching switch arranged on the VR headband, the audio switching switch is used to switch the control signal of the audio switching circuit, and the output end of the audio switching circuit is connected to the audio power supply of the pair of headphones and can turn on and off the audio power supply through the control signal. The VR headband of the embodiment of the present utility model integrates the functions of charging and discharging, audio transmission, and switching between internal speaker and headphone playing, and has the advantage of multi-functional integration to meet customer needs. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 Schematic diagram of the circuit principle of the Type-C connector (JK2) provided by the embodiment of the present utility model;

[0030] Figure 2 Schematic diagram of the circuit principle of the step-down circuit provided by the embodiment of the present utility model;

[0031] Figure 3 Schematic diagram of the circuit principle of the boost circuit provided by the embodiment of the present utility model;

[0032] Figure 4 Schematic diagram of the circuit principle of the battery cell (U1) of the energy storage component provided by the embodiment of the present utility model;

[0033] Figure 5 Schematic diagram of the circuit principle of the transmission line provided by the embodiment of the present utility model;

[0034] Figure 6 Schematic diagram of the circuit principle of the chip U3 provided by the embodiment of the present utility model;

[0035] Figure 7 Schematic diagram of the circuit principle of the chip U2 provided by the embodiment of the present utility model;

[0036] Figure 8 Partial enlarged view of the circuit principle of the chip U2 provided by the embodiment of the present utility model;

[0037] Figure 9 Schematic diagram of the circuit principle of the chip U6 provided by the embodiment of the present utility model;

[0038] Figure 10 System principle block diagram of the control circuit provided by the embodiment of the present utility model. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the protection scope of the present utility model.

[0040] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprise" indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0041] It should also be understood that the terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. As used in the description of the present utility model and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0042] It should be further understood that the term "and / or" used in the description of the present utility model and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0043] For the convenience of understanding the control circuit of this solution, the VR headband to which it is applied will be introduced first:

[0044] The embodiment of the present utility model also provides a VR headband with functions of charging and discharging, audio playing and audio switching, including: a headband body, a power storage component, a Type-C connector, a transmission line and a headset;

[0045] The VR headband is applied to a VR head-mounted display. The power storage component is arranged on the rear side of the headband body. The power storage component includes a circuit board and a battery cell connected to the circuit board (charging and discharging of the rechargeable battery are realized through the battery cell); the Type-C connector is arranged on the circuit board and is used to connect to an external power supply to input voltage to the battery cell; the transmission line is connected to the circuit board and is used to connect to the VR head-mounted display installed on the front side of the headband body to supply power and transmit signals to the VR head-mounted display; the headset is arranged on the headband body. The output port of the VR head-mounted display is connected to the circuit board through an audio cable, and the circuit board is then connected to the interface of the headset through a circuit.

[0046] This embodiment adds functions of charging and discharging, audio playing and audio switching to the VR headband, realizing the advantage of multi-function integration to meet customer needs. Specifically, the power storage component can be charged while charging the VR head-mounted display through the power storage component, and at the same time, the audio of the built-in speaker of the VR head-mounted display and the audio of the headset can be switched for corresponding audio playing. Thus, the overall application experience of the user is effectively improved.

[0047] Combined with Figures 1-10 , the control circuit of the present invention includes:

[0048] A charging circuit, the input end of the charging circuit is connected to the provided Type-C connector, and the output end of the charging circuit is connected to the power storage component;

[0049] A discharging circuit, the input end of the discharging circuit is connected to the power storage component, and the output end of the discharging circuit is connected to the transmission line;

[0050] An audio circuit, the input end of the audio circuit is connected to the VR head-mounted display, and the output end of the audio circuit is connected to the headset;

[0051] An audio switching circuit, the input end of the audio switching circuit is connected to an audio switching switch provided on the VR headset, the audio switching switch is used to switch the control signal of the audio switching circuit, and the output end of the audio switching circuit is connected to the audio power supply of the headset and turns on and off the audio power supply through the control signal.

[0052] In this embodiment, the charging circuit, the discharging circuit, the audio circuit and the audio switching circuit are integrated, realizing the functions of charging and discharging, audio playing and audio switching on the VR headset.

[0053] The following is a more specific introduction to the charging circuit:

[0054] Combined with Figure 1 、 Figure 2 and Figure 4 , the charging circuit includes at least a switching transistor Q2, a switching transistor Q4 and a switching transistor Q6 connected in sequence; the input end of the switching transistor Q2 is connected to the Type-C connector, and the output end of the switching transistor Q6 is connected to the battery cell of the energy storage component (i.e., U1). Using the Type-C connector as the charging input, the following charging circuit is thus formed.

[0055] In the specific charging circuit, when using the Type-C connector (JK2), the Type-C connector is externally connected to a voltage source, and the voltage is input from the B4B9 pins of the Type-C connector (i.e., the VBUS2 terminal) to the VBUS2 terminal (i.e., the first pin) of the switching transistor Q2, and then from the VOUT1 terminal of the switching transistor Q2 (i.e., the fifth to eighth pins) to the VOUT1 terminal of the switching transistor Q4 (i.e., the fifth and sixth pins), and then in parallel through R1 in the switching transistor Q4, and then enters the switching transistor Q6 for voltage reduction, and is input from the BATT+ terminal of the switching transistor Q6 to the BATT+ terminal of the battery cell, so as to enter the battery cell to realize charging of the rechargeable battery.

[0056] The following is a more specific introduction to the discharging circuit:

[0057] Combined with Figures 3-5 , in one embodiment, the discharging circuit includes at least a switching transistor Q5, a switching transistor Q3 and a switching transistor Q1 connected in sequence; the input end of the switching transistor Q5 is connected to the battery cell of the energy storage component, and the output end of the switching transistor Q1 is connected to the transmission line.

[0058] Among them, the battery cell of the energy storage component includes a BATT+ terminal, and the BATT+ terminal of the battery cell of the energy storage component is connected to the BATT+ terminal of the switching transistor Q5; the output end of the switching transistor Q1 includes a VBUS4 terminal, and the VBUS4 terminal of the switching transistor Q1 is connected to the VBUS4 terminal of the transmission line.

[0059] In this embodiment, during discharging (i.e., when charging the VR headset), the power storage component conveys the voltage through the BATT+ terminal of the battery cell to the BATT+ terminal (i.e., the 7th and 8th pins) of the switching transistor Q5, and it is continuously transmitted to the VOUT2 terminal (i.e., C13) of the switching transistor Q3, then enters the VOUT2 terminal (i.e., the 5th to 8th pins) of the switching transistor Q1 from the VOUT2 terminal of Q3, and finally is connected to the VBUS4 terminal (i.e., the 1st to 3rd pins) of the switching transistor Q1 and the VBUS4 terminal (i.e., the 7th and 8th pins) of the input transmission line, thereby realizing the discharging of the power storage component, that is, charging the VR headset.

[0060] In one embodiment, when the battery cell of the power storage component is connected to the charging circuit and the discharging circuit, a lithium protection circuit is added, and the overcharge, over-discharge, over-current and short circuit of the power storage component are protected through the lithium protection circuit (PCM), thereby improving the stability.

[0061] The following is a more specific introduction to the audio circuit:

[0062] Combined with Figure 5 and Figure 6 , in one embodiment, the audio circuit is at least composed of a transmission line and a chip U3; the input end of the transmission line is connected to the VR headset, the output end of the transmission line is connected to the input end of the chip U3, and the output end of the chip U3 is connected to the earphone.

[0063] Among them, the UD+ terminal and the UD− terminal of the transmission line are used to receive the audio encoding signal output by the VR headset, and the UD+ terminal and the UD− terminal of the transmission line are also used to output the audio encoding signal to the chip U3. The chip U3 converts the audio encoding signal into an analog signal. The output end of the chip U3 includes the first to fourth pins and is used to output the analog signal to the earphone; among them, the model of the chip U3 is the AB136D chip, which can perform audio decoding and signal conversion.

[0064] In this embodiment, during audio transmission, the audio output port of the VR headset conveys the audio encoding signal through the audio cable to the circuit board first and is received by the UD+ terminal and the UD− terminal (i.e., the 11th and 12th pins) of the transmission line, and the audio encoding signal is continuously input from the UD+ terminal and the UD− terminal of the transmission line to the chip U3, and enters the UD+ terminal and the UD− terminal of the chip U3 through the R50\R52 resistors. After the chip U3 converts the audio encoding signal into an analog signal, the analog signal is output to the earphone through the first to fourth pins of the chip U3, thereby realizing the audio playback function through the earphone.

[0065] The following is a more specific introduction to the audio switching circuit:

[0066] Combined with Figure 5 , Figures 7-9, in one embodiment, the audio switching circuit is at least composed of an audio switching switch, a transmission line, chip U2, and chip U6 connected in sequence; the audio switching switch is used to switch the control signals (turn-off signal and turn-on signal) of the audio switching circuit; the turn-off signal or turn-on signal is input into the transmission line and sequentially passes through chip U2 and chip U6 for signal switching, and turns off or turns on the headset. Among them, chip U2 is an MCU micro-control unit, and the model of chip U2 can be SD59D24B; the model of chip U6 can be LP6450B6F.

[0067] In this embodiment, by manually toggling the audio switching switch, such as toggling it to the off position, a low-level signal is generated at pins 1 and 2 of the CN2 interface and enters pin 31 of chip U2. After being processed inside chip U2, a turn-off signal is output, and the output of chip U6 is turned off by pin 25 (i.e., the audio power supply of the VR headband is turned off), thereby switching to the internal speaker of the VR headset, so as to realize the playback of the internal speaker of the original host; it can be understood that if the audio switching switch is toggled to the on position, a high-level signal is generated at pins 1 and 2 of the CN2 interface and enters pin 31 of chip U2. After being processed inside chip U2, a turn-on signal is output, and the output of chip U6 is turned on by pin 25, thereby enabling the playback of the external headset. Based on this, the on / off of the audio power supply is controlled by chip U2 to realize the process of audio signal switching.

[0068] In some embodiments, chip U2 is also connected with multiple LED indicators for indicating the power of the power storage component, and the current power is indicated by controlling whether the LED indicators are lit. Chip U2 is also connected with an NTC protection circuit (dual-channel). When a large instantaneous power current flows through the NTC protection circuit, the NTC protection circuit can increase the resistance to suppress the current, effectively protecting the device from damage.

[0069] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A control circuit with charging and discharging, audio playback, and audio switching functions, which is applied to the VR headband of a VR headset, and is characterized in that, The VR headset includes a headset body, and a headset, a power storage component and a transmission line disposed on the headset body; the control circuit includes: A charging circuit, the input end of the charging circuit is connected to a set Type-C connector, and the output end of the charging circuit is connected to the power storage component; A discharging circuit, the input end of the discharging circuit is connected to the power storage component, and the output end of the discharging circuit is connected to the transmission line; An audio circuit, the input end of the audio circuit is connected to the VR headset, and the output end of the audio circuit is connected to the headset; An audio switching circuit, the input end of the audio switching circuit is connected to an audio switching switch disposed on the VR headset, the audio switching switch is used to switch the control signal of the audio switching circuit, and the output end of the audio switching circuit is connected to the audio power supply of the headset and turns on and off the audio power supply through the control signal.

2. The control circuit with charging and discharging, audio playback and audio switching according to claim 1, wherein The charging circuit is at least composed of a switching tube Q2, a switching tube Q4 and a switching tube Q6 connected in sequence; the input end of the switching tube Q2 is connected to the Type-C connector, and the output end of the switching tube Q6 is connected to the battery cell of the power storage component.

3. The control circuit with charging and discharging, audio playback and audio switching as claimed in claim 2, wherein The input end of the switching tube Q2 includes a VBUS2 terminal, and the VBUS2 terminal of the switching tube Q2 is connected to the VBUS2 terminal of the Type-C connector; the output end of the switching tube Q6 includes a BATT+ terminal, and the BATT+ terminal of the switching tube Q6 is connected to the BATT+ terminal of the battery cell of the power storage component.

4. The control circuit with charging and discharging, audio playback and audio switching according to claim 1, characterized in that, The discharging circuit is at least composed of a switching tube Q5, a switching tube Q3 and a switching tube Q1 connected in sequence; the input end of the switching tube Q5 is connected to the battery cell of the power storage component, and the output end of the switching tube Q1 is connected to the transmission line.

5. The control circuit with charging and discharging, audio playback and audio switching as claimed in claim 4, wherein The battery cell of the power storage component includes a BATT+ terminal, and the BATT+ terminal of the battery cell of the power storage component is connected to the BATT+ terminal of the switching tube Q5; The output end of the switching tube Q1 includes a VBUS4 terminal, and the VBUS4 terminal of the switching tube Q1 is connected to the VBUS4 terminal of the transmission line.

6. The control circuit with charge and discharge, audio playback and audio switching as claimed in claim 1, wherein The audio circuit is at least composed of a transmission line and a chip U3; the input end of the transmission line is connected to the VR headset, the output end of the transmission line is connected to the input end of the chip U3, and the output end of the chip U3 is connected to the headset.

7. The control circuit with charging and discharging, audio playback and audio switching according to claim 6, characterized in that The UD+ terminal and the UD− terminal of the transmission line are used to receive the audio coding signal output by the VR headset, and the UD+ terminal and the UD− terminal of the transmission line are used to output the audio coding signal to the chip U3. The chip U3 converts the audio coding signal into an analog signal. The output end of the chip U3 includes a first pin to a fourth pin and is used to output the analog signal to the headset; wherein, the chip U3 is an AB136D chip.

8. The control circuit with charging and discharging, audio playback and audio switching according to claim 1, characterized in that The audio switching circuit is at least composed of an audio switching switch, a transmission line, a chip U2 and a chip U6 connected in sequence; the audio switching switch is used to switch an off signal and an on signal; the off signal or the on signal is input into the transmission line and sequentially passes through the chip U2 and the chip U6 for signal switching, and turns off or turns on the headset.

9. The control circuit with charging and discharging, audio playing and audio switching according to claim 8, characterized in that The chip U2 is an MCU microcontroller unit; the model of the chip U6 is the LP6450B6F chip.

10. A VR headband with functions of charging and discharging, audio playing and audio switching, characterized in that, It includes: A headband body; A power storage component, arranged on the rear side of the headband body, the power storage component includes a circuit board and a battery cell connected to the circuit board; A Type-C connector, arranged on the circuit board; A transmission line, connected to the circuit board; A headset, arranged on the headband body; The Type-C connector is used to externally connect a power supply to input voltage to the battery cell; The transmission line is used to connect to a VR headset installed on the front side of the headband body to supply power to and transmit signals to the VR headset; The headset is used to connect to the VR headset to receive audio signals.

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