WO2018019306A1 - Head-mounted display device and head-mounted display power supply system - Google Patents

Abstract

Disclosed are a head-mounted display device and two types of head-mounted display power supply systems. The head-mounted display device is provided with a communication interface, is connected to a portable terminal through the communication interface, acquires audio and video data from the portable terminal, interchanges data with the portable terminal, acquires an operating power supply from the portable terminal, and can operate normally by means of a connection to the portable terminal only through one cable, without taking up too many communication interfaces of the portable terminal, thereby reducing costs for the device. The first type of head-mounted display power supply system is connected between the head-mounted display device and the portable terminal using a power supply device, the power supply device supplies power to the head-mounted display device, and the head-mounted display device no longer consumes the electric energy of a battery of the portable terminal, thereby prolonging the time of using the head-mounted display device and the portable terminal together. The second type of head-mounted display power supply system comprises the head-mounted display device and the portable terminal, and the head-mounted display device does not need to provide an additional power interface, thereby reducing costs.

Description

Head-mounted display device and head-mounted display power supply system

cross reference

The present application refers to No. 201610620220.3, entitled "A Head-mounted Display Device", and No. 201610617515.5, entitled "A Head-mounted Display Power Supply System", and the patent name "One", which is filed on July 29, 2016. Chinese Patent Application No. 201610619377.4, which is incorporated herein by reference.

Technical field

The present invention relates to the field of virtual reality technologies, and in particular, to a head mounted display device and a head mounted display power supply system.

Background of the invention

With the development of virtual reality technology, there are more and more types of virtual reality devices. Currently, the commonly used virtual reality head-mounted display devices mainly include the following:

The first type: an external head-mounted display device that is connected to a high-performance host through a plurality of cables, and the host performs data processing, and the head-mounted display device displays images using its own screen. The external head-mounted display device can provide a better user experience, but the size and weight of the host are too large, and the portability is not good, and the user cannot perform the virtual reality experience anytime and anywhere.

The second type: integrated head-mounted display device, which does not require an external host, and is responsible for data processing and image display. The integrated head-mounted display device allows the user to move freely without the constraints of the cable, but the integrated head-mounted display device is equivalent to integrating the host into the headset, and its performance is significantly lower than that of the external head-mounted display device. Moreover, the weight of the wearing part is larger, and the use of the device for a long time can obviously feel the heat of the device, and the user experience is not good.

The third type: the mobile terminal head-mounted display device has a simple structure and usually only has a casing and an optical structure. When used, the mobile phone needs to be placed inside the head-mounted display, the mobile phone is responsible for data processing, and the screen of the mobile phone is used for displaying images. The mobile-end head-mounted display device has the same advantages as the integrated head-mounted display device, and the cost is lower, but since the screen sizes of different mobile phones are different, it is necessary to adjust the head-mounted display device to adapt to a specific model of the mobile phone, which is inconvenient to operate, and There is also the problem that the integrated head-mounted display device is heavy and the device is hot.

In order to improve the user experience, a portable terminal such as a mobile phone can be used as a host of an external head-mounted display device to make it portable, and the user can perform a virtual reality experience anytime and anywhere. Compared with the integrated head-mounted display device and the mobile-end head-mounted display device, the mobile phone responsible for data processing is external to the head-mounted display device, which reduces the weight of the head-mounted display device, and the user's head does not obviously feel the heat of the device. Suitable for long wear. However, the current external head mounted display device must be connected to the host through a plurality of cables, such as using at least one HDMI cable to transmit audio and video data, at least one USB cable interactive control data, and at least one power line to supply power. On the one hand, some portable terminals do not have corresponding types of interfaces. On the other hand, the number of communication interfaces on the portable terminals is limited, and many portable terminals cannot meet the requirements of the number of interfaces of the head-mounted display devices, thereby restricting the external head. Wear a display device application.

There are usually several ways to supply power to an external head-mounted display device that uses a portable terminal as a host:

First, the battery of the portable terminal is used to supply power to the head mounted display device. However, in order to satisfy the demand for appearance and portability, the existing portable terminal generally does not have a large capacity of the built-in battery, and cannot supply power to the head mounted display device for a long time.

Second, connect an external power supply to power the head-mounted display device. But this method requires an extra power connection on the head mounted display device. The mouth or power cord, the product is not beautiful enough, it also increases the cost and affects the portability of the user experience.

Third, a large-capacity battery is set in the head-mounted display device, and the power stored in the battery is used to power the head-mounted display device. However, putting the battery into the head-mounted display device may cause the device to heat up, the user experience is not good, and the device may be overheated or the battery quality may be bad, which may threaten the user's personal safety.

Summary of the invention

In a first aspect, the present invention provides a head mounted display device to solve the problem that an existing external head mounted display device must be connected to a host through a plurality of cables, and the type and number of communication interfaces on many portable terminals cannot satisfy the head. The need to wear the device, thus limiting the problem of the application of the external head mounted display device.

The head-mounted display device provided by the present invention is provided with a communication interface through which the head-mounted display device is connected to the portable terminal, audio and video data is acquired from the portable terminal, and data is exchanged with the portable terminal. And obtaining a working power source from the portable terminal.

Optionally, the communication interface is a USB Type-C interface; the portable terminal is a smart phone or a tablet with a USB Type-C interface.

Optionally, the communication interface is a USB Type-C male with a cable.

Optionally, a set of a microcontroller and a plurality of sensors connected to the microcontroller are disposed in the head mounted display device;

The microcontroller connects to the communication interface through a USB signal line, acquires a control command transmitted by the portable terminal, and transmits data collected by the plurality of sensors to the portable terminal.

Optionally, a signal conversion module is further disposed in the head mounted display device, and the signal conversion module is connected to the communication interface, for converting audio and video data of the Displayport protocol acquired from the portable terminal into a MIPI protocol. Audio and video data.

Optionally, a video output module and an audio output module are further disposed in the head mounted display device, where the video output module and the audio output module are respectively connected to the signal conversion module;

The video output module is an LCD display screen for displaying a video signal output by the signal conversion module;

The audio output module includes an audio decoding chip and an audio jack; the audio decoding chip acquires an audio signal output by the signal conversion module through an I2S bus, decodes the audio signal, and sends the audio signal to the audio jack for playing.

Optionally, a power module is further disposed in the head mounted display device, and the power module is connected to the communication interface;

When the head mounted display device is connected to the portable terminal through the communication interface, the power module acquires a working power source from the portable terminal to supply power to each module in the head mounted display device.

Optionally, a built-in battery and a charging management chip are further disposed in the head mounted display device, and the charging management chip is respectively connected to the communication interface, the built-in battery, and the power module;

When the head mounted display device is connected to the portable terminal through the communication interface, the charging management chip takes power from the portable terminal to charge the built-in battery;

When the head mounted display device is not connected to the portable terminal through the communication interface or the portable terminal is low in power, the charging management chip takes power from the built-in battery to supply power to the power module.

In a second aspect, the present invention provides a head-mounted display power supply system such that the head-mounted display device does not need to be provided with an additional power interface or electricity. The source line can obtain the working power from the power supply device of the head-mounted display power supply system, and the head-mounted display device does not consume the power of the battery of the portable terminal, and can extend the time for the head-mounted display device and the portable terminal to be used together.

The head-mounted display power supply system provided by the present invention comprises a head-mounted display device, a portable terminal and a power supply device;

The power supply device includes a first communication interface for connecting to the portable terminal, and a second communication interface for connecting the head mounted display device;

A data channel is disposed between the first communication interface and the second communication interface, and the data communication is directly performed between the headset and the portable terminal through the data channel;

When the power supply device simultaneously connects the portable terminal and the head mounted display device, the power supply device supplies power to the head mounted display device through the second communication interface;

When the power supply device is only connected to the portable terminal, the power supply device supplies power to the portable terminal through the first communication interface.

Optionally, the power supply device includes a casing formed by an upper casing and a lower casing, and a PCB board and a first built-in battery are disposed in the casing, and the first charging management chip and the charging interface are disposed on the PCB board, and The charging interface exposes a housing for connecting an external power source;

The first communication interface and the second communication interface are both disposed on the PCB, respectively connected to the first charging management chip and exposing the housing;

When the charging interface is not connected to an external power source, the first charging management chip takes power from the first internal battery to supply power to the portable terminal or the head mounted display device;

When the charging interface is connected to the external power source, the first charging management chip directly receives power from the external power source, supplies power to the portable terminal or the head mounted display device, and simultaneously charges the first built-in battery.

Optionally, the first communication interface and the second communication interface are both USB Type-C interfaces, and the portable terminal is a smart phone or a tablet with a USB Type-C interface, and the head mounted display device A USB Type-C interface is provided on it.

Optionally, the power supply device is a battery back clip, and has an approximate appearance with the portable terminal;

The two side edges of the power supply device are provided with a fixing structure for fixing the power supply device to the back of the portable terminal.

Optionally, the portable terminal is provided with a USB Type-C socket, and the head mounted display device is provided with a USB Type-C male connector with a cable;

The first communication interface is a USB Type-C male head, and is disposed on an upper surface of the upper casing of the power supply device, and when the power supply device is fixed on a back surface of the portable terminal, the first communication interface is inserted into the USB Type-C female base of the portable terminal;

The second communication interface is a USB Type-C socket, and is disposed at one end surface of the power supply device housing for inserting a USB Type-C male plug of the head mounted display device;

The charging interface is a Micro USB interface disposed on one side of the power supply device housing.

Optionally, the power supply device further includes a switch control circuit;

The switch control circuit is configured to detect whether the second communication interface is connected to the head mounted display device; and when the second communication interface is detected to be connected to the head mounted display device, control the first communication Circuit breaking between the interface and the first charging management chip; controlling the first communication interface and the first charging management when detecting that the second communication interface is not connected to the head mounted display device The circuit between the chips is turned on.

Optionally, the switch control circuit includes a PMOS transistor, a triode, a push button switch, a first resistor, and a second resistor;

The first end of the button switch is connected to the base of the triode, and is connected to the power output end of the first charging management chip through the first resistor, and the second end of the button switch is grounded;

a collector of the triode is connected to a gate of the PMOS transistor, an emitter of the triode is grounded; a source of the PMOS transistor is connected to a power output end of the charge management chip, and a drain is connected to the first communication interface. The two ends of the second resistor are respectively connected to the source and the gate of the PMOS transistor;

When the second communication interface is connected to the head mounted display device, the button switch is in an on state; when the second communication interface is not connected to the head mounted display device, the button switch is off Open state.

Optionally, the switch control circuit further includes a diode;

The anode of the diode is connected to the drain of the PMOS transistor, and the cathode of the diode is connected to the first communication interface.

In a third aspect, the present invention further provides another head-mounted display power supply system, which solves the shortcomings of the existing power supply mode for the head-mounted display device used in conjunction with the portable terminal, so that the head-mounted display device is connected to the portable through only one interface. The terminal can simultaneously acquire audio and video signals from the portable terminal, exchange data signals with the portable terminal, and obtain power from the portable terminal. The head mounted display device does not need to set an additional power interface or power line, and only occupies one interface of the portable terminal, and the head The working power of the display device is obtained from the portable terminal, and the problem of overheating of the product caused by the heat of the built-in battery is avoided.

The head-mounted display power supply system provided by the present invention comprises a head-mounted display device and a portable terminal; the head-mounted display device is provided with a communication interface, and the head-mounted display device is connected to the portable terminal through the communication interface;

When the head mounted display device is connected to the portable terminal, the portable terminal transmits audio and video data to the head mounted display device through the communication interface, exchanges data with the head mounted display device, and wears the headset The display device provides working power.

Optionally, the portable terminal is provided with a wireless charging receiving module, and the head mounted display power supply system further includes a wireless power supply device;

The wireless power supply device includes a casing composed of an upper casing and a lower casing, and a wireless charging and emitting module, a PCB board and a first built-in battery are disposed in the casing, and the first charging management chip is disposed on the PCB board And a charging interface, and the charging interface exposes the housing for connecting an external power source;

The wireless power supply device supplies power to the portable terminal through the wireless charging and transmitting module.

Optionally, the wireless charging and transmitting module of the wireless power supply device is disposed above the PCB board near a position of the upper casing; the first internal battery is disposed under the PCB board, adjacent to the The position of the lower case.

Optionally, when the charging interface of the wireless power supply device is not connected to the external power source, the first charging management chip controls the first internal battery to supply power to the wireless charging transmitting module;

When the charging interface is connected to the external power source, the first charging management chip controls the external power source to directly supply power to the wireless charging transmitting module, and simultaneously charges the first built-in battery.

Optionally, the wireless power supply device is a battery back clip having a shape matching the portable terminal; the edge of the upper shell of the wireless power supply device is provided with a fixed structure for fixing the wireless power supply device in the The back of the portable terminal.

Optionally, the charging interface of the wireless power supply device is a Micro USB interface, and is disposed at one end surface of the wireless power supply device housing.

The first beneficial aspect is that the head mounted display device is provided with a communication interface through which the headset device is connected to the portable terminal, and the portable terminal transmits audio and video data, the portable terminal and the headset to the head mounted display device. The data interaction between the display devices and the power supply of the portable terminal for the head-mounted display are realized through the interface, achieving high signal integration, reducing the number of cables required for establishing a connection, facilitating the design of the product appearance, and reducing the device's appearance. Cost; multiple lines must be used compared to existing external head-mounted display devices The cable is connected to the host, and the head-mounted display device of the present invention can work normally only by connecting a cable to the portable terminal without occupying too many communication interfaces of the portable terminal, and since the weight and volume of the portable terminal are significantly smaller than that of the existing host, It also has better portability and helps to improve the user experience.

In a second aspect, the head-mounted display power supply system provided by the present invention comprises a head-mounted display device, a portable terminal and a power supply device, the power supply device is connected to the portable terminal through the first communication interface, and the head-mounted display device is connected through the second communication interface, when the power supply device When the portable terminal and the head mounted display device are connected at the same time, the power supply device supplies power to the head mounted display device, and the head mounted display device no longer consumes the power of the battery of the portable terminal, thereby prolonging the time for the head mounted display device and the portable terminal to be used together. A data path is disposed between the first communication interface and the second communication interface, and direct communication between the portable terminal and the head mounted display device can be realized. When the power supply device simultaneously connects the portable terminal and the head mounted display device, the power supply device does not affect the head. The wearable display device is used in conjunction with the portable terminal. When data communication is performed, the head mounted display device is connected to the power supply device to be connected to the portable terminal at the same time, so the head mounted display device does not need to be provided with an additional power interface or power line. When the power supply device is only connected to the portable terminal, the power supply device supplies power to the portable terminal, and can extend the life time of the portable terminal itself.

In a preferred embodiment, the two communication interfaces of the power supply device adopt a USB Type-C type interface, can supply power to the portable terminal or supply power to the head mounted display device with a large current, and the USB Type-C interface can transmit simultaneously. Displayport data and USB data enable the head-mounted display device to simultaneously acquire audio and video signals in the Displayport format from the portable terminal and interact with the portable terminal in the USB format data signal using only one cable, through a USB Type-C interface. Get the working power from the power supply.

In a further preferred embodiment, the power supply device is a battery back clip having a shape matching the portable terminal, and the power supply device can be fixed on the back of the portable terminal through a fixed structure provided at the edge of the upper casing of the power supply device, thereby enhancing the wearing Shows the overall portability of the power supply system.

In a third aspect, in the head-mounted display power supply system provided by the present invention, the head-mounted display device is provided with a communication interface through which the portable terminal is connected, and the head-mounted display device simultaneously acquires audio and video data from the portable terminal through the communication interface. The data is exchanged with the portable terminal, and the working power is obtained from the portable terminal. The head mounted display device does not need to be provided with an additional power interface or a power cord, which makes the product more beautiful and reduces the cost. The head-mounted display device can work normally only by connecting to the portable terminal through one communication interface, without occupying too many communication interfaces of the portable terminal, and does not limit the application of the portable terminal. Since the head-mounted display device mainly obtains the working power from the portable terminal, the problem of overheating of the product caused by the built-in battery heating is avoided, the safety of the device is enhanced, and the user experience is improved.

In a preferred embodiment, the head-mounted display power supply system provided by the present invention further provides a wireless power supply device, which can supply power to a portable terminal provided with a wireless charging receiving module, thereby further extending the use of the head-mounted display device with the portable terminal. time. Since the wireless power supply is used, the wireless power supply device does not occupy the interface of the portable terminal, and does not affect the use of the head mounted display device and the portable terminal, and does not limit the application of the portable terminal.

In a further preferred embodiment, the wireless power supply device is a battery back clip having a shape matching the portable terminal, and the power supply device can be fixed on the back of the portable terminal through a fixed structure provided on the edge of the upper casing of the power supply device to enhance the wearing Shows the overall portability of the power supply system.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only Are some embodiments of the invention, common to the art For the skilled person, other drawings can be obtained from these drawings without any creative work.

1 is a schematic view showing a connection between a head mounted display device and a mobile phone according to an embodiment of the present invention; wherein FIG. 1(a) is a plan view and FIG. 1(b) is a front view;

2 is a block diagram showing the structure of a head mounted display device according to an embodiment of the present invention;

3 is a block diagram showing the composition of a head-mounted display power supply system according to an embodiment of the present invention;

4 is a functional block diagram of a power supply device in a head-mounted display power supply system according to an embodiment of the present invention;

5 is an external view of a power supply device in a head-mounted display power supply system according to an embodiment of the present invention;

6 is a circuit diagram of a switch control circuit of a power supply device in a head-mounted display power supply system according to an embodiment of the present invention;

7 is a functional block diagram of a head-mounted display power supply system according to an embodiment of the present invention;

8 is a functional block diagram of a wireless power supply device in a head-mounted display power supply system according to an embodiment of the present invention;

9 is a schematic structural diagram of a wireless power supply device in a head-mounted display power supply system according to an embodiment of the present invention;

10 is an external view of a wireless power supply device in a head-mounted display power supply system according to an embodiment of the present invention;

FIG. 11 is a schematic structural diagram of a head-mounted display power supply system according to an embodiment of the present invention.

detailed description

The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

It should be understood that the described embodiments are only a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In a first aspect, the design concept of the present invention is: Currently, an external head mounted display device is usually connected to a host by a plurality of cables, for example, an HDMI cable is used to transmit audio and video data, a USB cable is used to control data, and a power line is used to supply power. . In general, a portable terminal has a limited communication interface and cannot connect multiple cables. In this case, the head mounted display device of the present invention is provided with a communication interface, which is connected to the portable terminal through a cable, and the portable terminal transmits audio and video data to the head mounted display device through the interface, and interacts with the head mounted display device. The data also supplies power to the head mounted display device, thereby solving the problem that the type and number of communication interfaces on the portable terminal cannot meet the needs of the head mounted display device, and also reduces the number of cables required for the head mounted display device to establish a connection with the portable terminal. , reducing costs.

In a second aspect, the design concept of the present invention is to connect a head mounted display device and a portable terminal by using a power supply device, and the power supply device supplies power to the head mounted display device, and the head mounted display device no longer consumes the power of the battery of the portable terminal. , to extend the time when the head-mounted display device and the portable terminal are used together. The data path is set inside the power supply device to realize direct communication between the portable terminal and the head mounted display device, so that the power supply device does not affect the use of the head mounted display device and the portable terminal, and when the data communication is performed, the head mounted display device is connected to the power supply. The device is equivalent to being connected to the portable terminal at the same time, and the head mounted display device does not need to be provided with an additional power interface or power cord.

In a third aspect, the design concept of the present invention is: in view of the deficiencies of the existing power supply mode for the head mounted display device used in conjunction with the portable terminal, the present invention provides a head mounted display power supply system, which is provided on the head mounted display device. A communication interface is connected to the portable terminal through the interface, and the head mounted display device simultaneously acquires audio and video data from the portable terminal, exchanges data with the portable terminal, and acquires working power from the portable terminal through the communication interface, and the head mounted display device does not need to be set. Additional power connectors or power cords make the product more aesthetically pleasing and less The cost. The head-mounted display device can work normally only by connecting to the portable terminal through one communication interface, without occupying too many communication interfaces of the portable terminal, and does not limit the application of the portable terminal. Since the head-mounted display device mainly obtains the working power from the portable terminal, the problem of overheating of the product caused by the built-in battery heating is avoided, the safety of the device is enhanced, and the user experience is improved. Further, a wireless power supply device can also be provided, which wirelessly supplies power to the portable terminal, extends the time used by the head mounted display device to match the portable terminal, and does not occupy the interface of the portable terminal.

Embodiment 1

1 is a schematic view showing a connection between a head mounted display device and a mobile phone according to an embodiment of the present invention; wherein FIG. 1(a) is a plan view and FIG. 1(b) is a front view. Referring to FIG. 1, the head mounted display device is provided with a communication interface through which the head mounted display device is connected to the mobile phone. Through the interface, the head-mounted display device can obtain audio and video data from the mobile phone, exchange data with the mobile phone, and obtain working power from the mobile phone.

As shown in FIG. 1 , since the audio and video data, the data signal, and the power signal are integrated into one communication interface, the headset provided in this embodiment can work normally only by connecting a cable to the mobile phone. The problem that the existing head-mounted display device must be connected to the host by using multiple cables and thus cannot be applied to the mobile phone is solved. The weight and volume of the mobile phone are obviously smaller than that of the existing host, which has better portability and reduces the required line. The number of cables reduces the cost of the equipment.

The communication interface provided on the head-mounted display device shown in FIG. 1 is a male connector disposed on the cable, and can be inserted into a corresponding type of female seat set on the mobile phone. Of course, the communication interface can also be of other types, for example, it can also be a female base, and a cable with a male end is connected to the mobile phone and the head mounted display device.

The mobile phone in this embodiment can also be replaced with other portable terminals such as a tablet computer.

Embodiment 2

2 is a block diagram showing the structure of a head mounted display device according to an embodiment of the present invention. As shown in FIG. 2, the head mounted display device 100 is provided with a communication interface 101, and the head mounted display device 100 is connected to the portable terminal 300 via the communication interface 101.

The cable 200 is used to connect the communication interface 101 on the head mounted display device 100 and the communication interface 301 on the portable terminal 300. The cable 200 may be integrated with the head mounted display device 100, and a male end is provided at one end of the cable 200 for inserting a female seat provided on the portable terminal 300 to realize connection of the communication interface 101 and the communication interface 301.

After the head mounted display device 100 establishes the above connection with the portable terminal 300, the head mounted display device 100 can acquire audio and video data from the portable terminal 300 through this connection; at the same time, the headset device 100 can exchange data with the portable terminal 300, such as The portable terminal 300 can transmit a control command to the head mounted display device 100, and the head mounted display device 300 can also return a corresponding data signal to the portable terminal; and the portable terminal 300 can also supply power to the head mounted display device 100 through this connection.

The headset 100 provided in this embodiment can work normally only by connecting a cable to the portable terminal 300. This solves the problem that the existing head-mounted display device must use multiple cables to connect to the host and thus cannot be applied to the portable terminal. Reduce the number of cables required and reduce the cost of the equipment.

In this embodiment, the communication interface 101 is a USB Type-C interface, and the portable terminal 300 is a smart phone or a tablet with a USB Type-C interface. The USB Type-C interface standard is one of the USB 3.1 standards. It has 4 pairs of differential signals, full-duplex communication, and supports up to 5V/20A. The USB Type-C can convert some or all of the differential signal channels into Displayport signal channels, and if there are remaining differential signals, it can continue to be used for USB data transmission. Therefore, the present embodiment realizes high integration of signals by using the USB Type-C interface, simultaneously transmits audio and video data and data signals, and realizes power supply of the portable terminal 300 for the head mounted display device 100. USB Type-C The connector is small in size and can be inserted from both sides. It is more suitable for portable terminals such as smartphones or tablets.

In this embodiment, the communication interface 101 on the head mounted display device 100 is a USB Type-C male connector with a cable for inserting a USB Type-C female socket on the portable terminal 100 to achieve the connection.

In this embodiment, the head mounted display device 100 is provided with a microcontroller 106, and a plurality of sensors 107 connected to the microcontroller 106, such as a gyroscope, an accelerometer, etc., and the sensor 107 can be used to collect and reflect the motion state of the user's head. data. The microcontroller 106 connects the communication interface 101 through a USB signal line, acquires a control command transmitted by the portable terminal 300, and transmits the data collected by the sensor 107 to the portable terminal 300 through the communication interface 101.

In the embodiment, the head-mounted display device 100 is further provided with a signal conversion module 102. The signal conversion module 102 is connected to the communication interface 101, and converts audio and video data of the Displayport protocol acquired from the portable terminal 300 into audio and video data of the MIPI protocol. . MIPI (Mobile Industry Processor Interface) is an open standard and a specification developed by the MIPI Alliance for mobile application processors. The MIPI protocol is widely used. This embodiment converts the Displayport signal into a MIPI signal to meet the requirements of hardware manufactured in accordance with the MIPI standard.

In this embodiment, the head-mounted display device 100 is further provided with a video output module and an audio output module, and the video output module and the audio output module are respectively connected to the signal conversion module 102. The video output module is an LCD display 103 for displaying a video signal output by the signal conversion module 102; the audio output module includes an audio decoding chip 104 and an audio jack 105, and the audio decoding chip 104 is connected through an I2S bus (Inter IC Sound, integrated circuit) The audio bus receives the audio signal output by the signal conversion module 102, decodes the audio signal, and transmits it to the audio jack 105.

In this embodiment, the head mounted display device 100 is further provided with a power module 108, and the power module 108 is connected to the communication interface 101. When the head mounted display device 100 is connected to the portable terminal 300 through the communication interface 101, the power module 108 acquires a working power source from the portable terminal 300 to supply power to each module in the head mounted display device 100.

In a preferred embodiment, the head mounted display device 100 is further provided with a built-in battery 110 and a charging management chip 109. The charging management chip 109 is connected to the communication interface 101, the built-in battery 110 and the power module 108, respectively.

When the head mounted display device 100 is connected to the portable terminal 300 through the communication interface 101, the charge management chip 109 takes power from the portable terminal 300 to charge the built-in battery 110. When the head mounted display device 100 is not connected to the portable terminal 300 through the communication interface 101, or when the portable terminal 300 is low in power, the charge management chip 109 takes power from the built-in battery 110 as the power source module 108. In the preferred embodiment, the built-in battery 110 and the charging management chip 109 enable the head mounted display device 100 to have the ability to self-power, reduce the power consumption of the portable terminal 300, and prolong the use time.

Embodiment 3

FIG. 3 is a schematic structural diagram of a head-mounted display power supply system according to an embodiment of the present invention. As shown in FIG. 3, the head-mounted display power supply system provided in this embodiment includes a head-mounted display device 100, a portable terminal 300, and a power supply device 400.

The power supply device 400 is provided with a first communication interface 401 for connecting the portable terminal 300 and a second communication interface 402 for connecting the head mounted display device 100.

A data channel is disposed between the first communication interface 401 and the second communication interface 402, and the portable terminal 300 can directly perform data communication with the head mounted display device 100 through the data channel.

When the power supply device 400 simultaneously connects the portable terminal 300 and the head mounted display device 100, the power supply device 400 supplies power to the head mounted display device 100 through the second communication interface 402, at which time the head mounted display device 100 no longer consumes the battery of the portable terminal 300. Electric energy, can be extended to wear The time when the display device and the portable terminal are used together. The head-mounted display device 100 acquires an audio-video signal from the portable terminal 300 through a data channel between the first communication interface 401 and the second communication interface 402, and interactively controls data with the portable terminal 300, in the process, a head-mounted display The device 100 is equivalent to being directly connected to the portable terminal 300, and the power supply device 400 does not affect the use of the head mounted display device 100 with the portable terminal. If only one communication interface or one cable is connected to the second communication interface 402 on the power supply device 400 on the head mounted display device 100, the connection with the portable terminal 300 can be simultaneously realized, and the head mounted display device 100 does not need to be provided with an additional Power connector or power cord.

When the power supply apparatus 400 is only connected to the portable terminal 300, the power supply apparatus 400 can supply power to the portable terminal 300 through the first communication interface 401, extending the life time of the portable terminal 300 itself.

Of course, the power supply device 400 can also connect the head mounted display device only through the second communication interface 402. At this time, although the head mounted display device may not work normally, if the head mounted display device 100 has its own power management chip and built-in battery, the power supply device The 400 can charge the built-in battery of the head mounted display device 100 so that when the head mounted display device 100 is not directly connected to the portable terminal 300 through the power supply device 400, self-power supply can be realized.

4 is a functional block diagram of a power supply device in a head-mounted display power supply system according to an embodiment of the present invention. As shown in FIG. 4, the power supply device 400 includes a casing composed of an upper casing and a lower casing, and a PCB board is disposed in the casing. And the first built-in battery 403, the first charging management chip 404 and the charging interface 405 are disposed on the PCB, and the charging interface 405 is exposed to the external power source 500. The first communication interface 401 and the second communication interface 402 are both disposed on the PCB, respectively connected to the first charging management chip 404 and expose the housing.

When the charging interface 405 is not connected to the external power source 500, the first charging management chip 404 takes power from the first internal battery 403, is a portable terminal connected to the first communication interface 401 or a head mounted display device connected to the second communication interface 402 powered by.

When the charging interface 405 is connected to the external power source 500, the first charging management chip 404 directly receives power from the external power source 500, and supplies power to the portable terminal connected to the first communication interface 401 or the head mounted display device connected to the second communication interface 402. At the same time, the first internal battery 403 is charged.

Preferably, the first communication interface 401 and the second communication interface 402 are both USB Type-C interfaces, and the portable terminal connected to the first communication interface 401 is a smartphone or tablet with a USB Type-C interface, connected to the A USB Type-C interface is also provided on the head mounted display device of the second communication interface 402.

The USB Type-C interface standard is one of the USB 3.1 standards. It has 4 pairs of differential signals, full-duplex communication, and supports up to 5V/20A. The USB Type-C can convert some or all of the differential signal channels into Displayport signal channels, and if there are remaining differential signals, it can continue to be used for USB data transmission. The first communication interface 401 and the second communication interface 402 both adopt a USB Type-C interface, and can supply power to the portable terminal or the head mounted display device with a large current, and the USB Type-C interface can simultaneously transmit Displayport audio and video signals and The USB data signal enables the head-mounted display device to simultaneously acquire audio and video signals of the Displayport format from the portable terminal, and exchange data signals of the USB format with the portable terminal, and the slave power supply device by using only one cable through a USB Type-C interface. Get the working power in.

5 is an external view of a power supply device in a head-mounted display power supply system according to an embodiment of the present invention. Preferably, as shown in FIG. 5, the power supply device is a battery back clip, and has a shape matching the portable terminal, that is, the present invention. The power supply device has the functions of a protective case and an external battery of the portable terminal. The edge of the upper casing of the power supply device is provided with a fixing structure 410, which may be a plurality of snap structures dispersedly disposed at the peripheral edges of the upper casing, or may be a ferrule structure disposed on one or more sides of the upper casing. It can also be a combination of a snap structure and a ferrule structure. The fixing structure 410 can fix the power supply device on the back of the portable terminal, so that the power supply device is easy to carry.

Specifically, the first communication interface 401 is a USB Type-C male head, and is disposed on an upper surface of the upper casing of the power supply device. When the power supply device is fixed on the back of the portable terminal, the first communication interface can be inserted into the USB Type set on the portable terminal. -C mother seat.

Specifically, the second communication interface 402 is a USB Type-C female seat, and is disposed on one end surface of the power supply device housing, and a USB Type-C male connector with a cable disposed on the external device can be inserted into the female seat to realize and supply power. The connection of the device.

In addition, the charging interface 405 is a Micro USB interface disposed on one side of the power supply device housing to facilitate charging the first internal battery 403 of the power supply device. When the charging interface 405 is not connected to the external power source 500, the power supply device supplies power to the portable terminal or the head mounted display device using the power provided by the first built-in battery 403. When the charging interface 405 is connected to the external power source 500, the power supply device directly supplies power to the portable terminal or the head mounted display device using the power provided by the external power source 500 while charging the first built-in battery 403.

Preferably, a switch control circuit 406 is further disposed on the PCB of the power supply device. The switch control circuit 406 is configured to detect whether the head mounted display device is connected to the second communication interface 402.

When it is detected that the head mounted display device is connected to the second communication interface 402, the switch control circuit 406 controls the circuit between the first communication interface 401 and the first charge management chip 404 to be disconnected, and the power supply device is worn by the second communication interface. The display device is powered, and the head-mounted display device no longer consumes the power of the battery of the portable terminal, and can extend the time for the head-mounted display device to be used with the portable terminal.

When it is detected that the head mounted display device is not connected to the second communication interface 402, the switch control circuit 406 controls the circuit between the first communication interface 01 and the first charge management chip 404 to be turned on, and the power supply device passes through the first communication interface 401. The portable terminal supplies power and extends the life time of the portable terminal itself.

FIG. 6 is a circuit diagram of a switch control circuit of a power supply device in a head-mounted display power supply system according to an embodiment of the present invention. As shown in FIG. 6, the switch control circuit in the preferred embodiment includes a PMOS transistor Q1, a transistor Q2, a button switch SW, a first resistor R1, and a second resistor R2.

The first end of the button switch SW is connected to the base of the transistor Q2, and is connected to the power output end of the first charging management chip through the first resistor R1, and the second end of the button switch SW is grounded. The collector of the transistor Q2 is connected to the gate of the PMOS transistor Q1, and the emitter of the transistor Q2 is grounded. The source of the PMOS transistor Q1 is connected to the power output end of the first electrical management chip, and the drain is connected to the first communication interface.

Both ends of the second resistor R2 are respectively connected to the source and the gate of the PMOS transistor Q1. The second resistor R2 is a clamp resistor that controls the voltage between the gate and the source of the PMOS transistor to ensure the state of the PMOS transistor Q1.

When the head mounted display device is connected to the second communication interface, the button switch SW is in an on state, the base of the transistor Q2 is grounded, the transistor Q2 is turned off, and thus the PMOS transistor Q1 is also turned off, the first communication interface and the first charging management chip are The circuit between them is broken.

When the head-mounted display device is not connected to the second communication interface, the button switch SW is in an off state, and the base of the transistor Q2 is connected to the power output terminal of the power management chip through the first resistor R1, which is a high voltage, and the transistor Q2 is turned on, PMOS The gate of the transistor Q1 is grounded, so the PMOS transistor Q1 is also turned on, and the circuit between the first communication interface and the first charge management chip is turned on.

Preferably, the switch control circuit further includes a diode D1 having a positive pole connected to the drain of the PMOS transistor Q1 and a negative pole connected to the first communication interface. When the power supply device is connected to the portable terminal, the power supply of the portable terminal is prevented from being poured and the power supply device is damaged.

It can be understood that the head-mounted display power supply system in the third embodiment can adopt the head-mounted display device in the second embodiment, and the structure and working principle thereof are the same as those in the second embodiment, and details are not described herein again.

Embodiment 4

The embodiment of the present invention provides a head-mounted display power supply system based on the same technical concept as the second embodiment.

As shown in FIG. 2, the head-mounted display power supply system provided in this embodiment includes a head-mounted display device 100 and a portable terminal 300, and a head-mounted display A communication interface 101 is disposed on the device, and the communication interface 101 of the head display device 100 can be connected to the communication interface 301 of the portable terminal 300 through the cable 200 to implement connection of the head mounted display device 100 with the portable terminal 300. Through this connection, the portable terminal 300 can simultaneously transmit audio and video data to the head mounted display device 100, exchange data with the head mounted display device 100, and provide operating power to the head mounted display device 100.

It can be understood that the head-mounted display power supply system in the fourth embodiment can adopt the head-mounted display device in the second embodiment, and the structure and working principle thereof are the same as those in the second embodiment, and details are not described herein again.

The head mounted display device 100 simultaneously acquires audio and video data from the portable terminal 300, exchanges data with the portable terminal, and acquires working power from the portable terminal through a USB Type-C interface, and the head mounted display device does not need to provide an additional power interface or power line. To make the product more beautiful and reduce costs. Since the head-mounted display device mainly obtains the working power from the portable terminal, the problem of overheating of the product caused by the built-in battery heating is avoided, the safety of the device is enhanced, and the user experience is improved.

Embodiment 5

This embodiment is to further extend the time when the head mounted display device is used with the portable terminal. FIG. 7 is a functional block diagram of a head-mounted display power supply system according to Embodiment 5 of the present invention. As shown in FIG. 7, in the head-mounted display power supply system provided in this embodiment, the head-mounted display device 100 still passes through the same manner as in the fourth embodiment. The set communication interface 101 is connected to the communication interface 301 provided on the portable terminal 300, and the connection of the head mounted display device 100 with the portable terminal 300 is realized.

The difference is that the wireless charging receiving module 302 is provided in the portable terminal 300. The head mounted display power supply system provided in this embodiment further includes a wireless powering device 600. The wireless power supply device 600 can supply power to the portable terminal 300, thereby extending the time in which the head mounted display device 100 is used in conjunction with the portable terminal 300.

8 is a functional block diagram of a wireless power supply device in a head-mounted display power supply system according to an embodiment of the present invention, and FIG. 9 is a schematic structural diagram of a wireless power supply device in a head-mounted display power supply system according to an embodiment of the present invention, which is combined with FIG. 8 and FIG. The wireless power supply device 600 includes a casing formed by an upper casing 610 and a lower casing 620. The casing is provided with a PCB board 630 and a first built-in battery 601. The PCB board 630 is provided with a first charging management chip 602 and a charging interface 603. And the charging interface 603 exposes the housing for connecting to the external power source 500. A wireless charging transmitting module 604 is further disposed in the housing, and the wireless charging transmitting module 604 is configured to supply power to the portable terminal provided with the wireless charging receiving module.

Preferably, as shown in FIG. 9, the wireless charging and transmitting module 604 is disposed above the PCB board 630, near the position of the upper case 610. When the wireless power supply device is used to power the portable terminal, the portable terminal is placed on the outer surface of the upper casing 610 of the wireless power supply device, and the wireless charging and transmitting module 604 is disposed at a position close to the upper casing 610, so that the wireless charging and transmitting module 604 can be enabled. More close to the wireless charging receiving module disposed in the portable terminal, and there are fewer obstacles between the two, and the signal transmitted by the wireless charging transmitting module 604 can be more received by the wireless charging receiving module, reducing wireless power supply. The device 600 is a power loss during charging of the portable terminal.

Preferably, as shown in FIG. 9, the first internal battery 601 is disposed below the PCB board 630, near the position of the lower case 620. The heat generated when the first internal battery 601 operates can be dissipated to the outside of the wireless power supply device 600 through the lower case 620 as soon as possible, so that the heat dissipation performance of the wireless power supply device 600 is better. When the wireless power supply device 600 is in operation, the first internal battery 601 is far away from the portable terminal, and the heat generated by the first internal battery 601 is prevented from being transmitted to the portable terminal in a large amount, thereby affecting the normal operation of the portable terminal.

In this embodiment, when the external power source 500 is not connected to the charging interface 603, the first charging management chip 602 controls the first internal battery 601 to supply power to the wireless charging transmitting module 604, that is, the power provided by the first built-in battery 601 is set. The portable terminal of the wireless charging receiving module supplies power.

When the charging interface 603 is connected to the external power source 500, the first charging management chip 602 controls the external power source 500 to directly transmit for wireless charging. The module 604 is powered, and the power of the first built-in battery 601 is no longer consumed, and the service life of the first built-in battery 601 is extended. Meanwhile, the first charging management chip 602 also uses the power provided by the external power source 500 as the first built-in battery 601. Charging, extending the battery life of the first built-in battery 601.

10 is an external view of a wireless power supply device in a head-mounted display power supply system according to an embodiment of the present invention. FIG. 11 is a schematic structural diagram of a head-mounted display power supply system according to an embodiment of the present invention. 10 and FIG. 11, in a preferred embodiment of the present invention, the wireless power supply device is a battery back clip, and the portable terminal is a mobile phone or a tablet computer supporting a wireless charging function, and a wireless charging receiving device is internally disposed. The wireless power supply device has a shape matched with the portable terminal, and the edge of the upper case of the wireless power supply device is provided with a fixed structure 611, and the fixed structure 611 can fix the wireless power supply device on the back of the portable terminal, so that the wireless power supply device is convenient to carry and is moving During the process, the upper casing of the wireless power supply device is always in close contact with the back of the portable terminal, and the wireless charging receiving module can better receive the signal from the wireless charging transmitting module, thereby reducing the power loss during the process of supplying power to the portable terminal by the wireless power supply device. . The wireless power supply device provided by the embodiment has a shape similar to that of the protective case, and functions as a power supply for the portable terminal and functions as a protective cover for protecting the portable terminal such as a mobile phone or a tablet computer, that is, the power supply device has the same function. The function of the protective case and external battery of the portable terminal.

In addition, a Micro USB type charging interface can be disposed on one end surface of the wireless power supply device housing, and the external power source can be connected through the charging interface, and the battery provided by the external power source can be used to charge the battery of the wireless power supply device and the power provided by the external power source. The wireless charging transmitter module directly supplies power to the portable terminal provided with the wireless charging receiving module, thereby further prolonging the time used by the portable terminal in conjunction with the head mounted display device.

In summary, in the first aspect, the head mounted display device of the present invention is provided with a communication interface through which the headset device is connected to the portable terminal, and the portable terminal transmits audio and video data, the portable terminal and the head to the head mounted display device. The data interaction between the display devices and the portable terminal for powering the head-mounted display are realized through the interface, achieving high signal integration, reducing the number of cables required for establishing a connection, facilitating the design of the product appearance, and reducing the device. Cost; compared to the existing external head-mounted display device, it is necessary to connect the host with multiple cables. The head-mounted display device of the present invention can work normally only by connecting one cable to the portable terminal without occupying the portable terminal. A multi-communication interface, and because the weight and size of the portable terminal is significantly smaller than the existing host, it also has better portability, which helps to improve the user experience.

In a second aspect, the first head mounted display power supply system provided by the present invention comprises a head mounted display device, a portable terminal and a power supply device, wherein the power supply device is connected to the portable terminal through the first communication interface, and the head mounted display device is connected through the second communication interface. When the power supply device is connected to the portable terminal and the head mounted display device at the same time, the power supply device is powered by the display device, and the head mounted display device no longer consumes the power of the battery of the portable terminal, thereby prolonging the time for the head mounted display device and the portable terminal to be used together. . A data path is disposed between the first communication interface and the second communication interface, and direct communication between the portable terminal and the head mounted display device can be realized. When the power supply device simultaneously connects the portable terminal and the head mounted display device, the power supply device does not affect the head. The wearable display device is used in conjunction with the portable terminal. When data communication is performed, the head mounted display device is connected to the power supply device to be connected to the portable terminal at the same time, so the head mounted display device does not need to be provided with an additional power interface or power line. When the power supply device is only connected to the portable terminal, the power supply device supplies power to the portable terminal, and can extend the life time of the portable terminal itself.

Secondly, the two communication interfaces of the power supply device adopt USB Type-C type interface, which can supply power to the portable terminal or supply power to the head mounted display device with a large current, and the USB Type-C interface can simultaneously transmit Displayport data and USB. The data enables the head-mounted display device to simultaneously acquire audio and video signals of the Displayport format from the portable terminal, and exchange data signals of the USB format with the portable terminal through a USB Type-C interface, and obtain the data signals from the power supply device. Working power supply.

Finally, the power supply device is a battery back clip having a shape that matches the portable terminal and is fixed by the edge of the upper casing of the power supply device. The structure can fix the power supply device on the back of the portable terminal, and enhances the portability of the head-mounted display power supply system as a whole.

In a third aspect, in the second head-mounted display power supply system provided by the present invention, the head-mounted display device is provided with a communication interface through which the portable terminal is connected, and the head-mounted display device simultaneously acquires from the portable terminal through the communication interface. Audio and video data, interaction with portable terminals, and access to working power from a portable terminal, the head-mounted display device does not require an additional power interface or power cord to make the product more aesthetically pleasing and reduce costs. The head-mounted display device can work normally only by connecting to the portable terminal through one communication interface, without occupying too many communication interfaces of the portable terminal, and does not limit the application of the portable terminal. Since the head-mounted display device mainly obtains the working power from the portable terminal, the problem of overheating of the product caused by the built-in battery heating is avoided, the safety of the device is enhanced, and the user experience is improved.

Secondly, the head-mounted display power supply system provided by the present invention further provides a wireless power supply device, which can supply power to the portable terminal with the built-in wireless charging receiving module, thereby further prolonging the time used by the head-mounted display device and the portable terminal. Since the wireless power supply is used, the wireless power supply device does not occupy the interface of the portable terminal, and does not affect the use of the head mounted display device and the portable terminal, and does not limit the application of the portable terminal.

Finally, the wireless power supply device is a battery back clip having a shape matched with the portable terminal. The fixed structure provided at the edge of the upper casing of the power supply device can fix the power supply device on the back of the portable terminal, thereby enhancing the overall performance of the head-mounted display power supply system. Portability.

Claims (22)

1. a head mounted display device, wherein the head mounted display device is provided with a communication interface through which the head mounted display device is connected to the portable terminal, and audio and video data is acquired from the portable terminal, and the portable device The terminal exchanges data and acquires working power from the portable terminal.
2. The head mounted display device of claim 1, wherein the communication interface is a USB Type-C interface; and the portable terminal is a smartphone or tablet with a USB Type-C interface.
3. The head mounted display device of claim 1, wherein the communication interface is a USB Type-C male with a cable.
4. The head mounted display device according to claim 1, wherein a plurality of sensors connected to the microcontroller are disposed in the head mounted display device;

   The microcontroller connects to the communication interface through a USB signal line, acquires a control command transmitted by the portable terminal, and transmits data collected by the plurality of sensors to the portable terminal.
5. The head mounted display device according to claim 1, wherein a signal conversion module is further provided in the head mounted display device, and the signal conversion module is connected to the communication interface for a Displayport to be acquired from the portable terminal The audio and video data of the protocol is converted into audio and video data of the MIPI protocol.
6. The head-mounted display device according to claim 5, wherein a video output module and an audio output module are further disposed in the head mounted display device, and the video output module and the audio output module are respectively connected to the signal conversion module ;

   The video output module is an LCD display screen for displaying a video signal output by the signal conversion module;

   The audio output module includes an audio decoding chip and an audio jack; the audio decoding chip acquires an audio signal output by the signal conversion module through an I2S bus, decodes the audio signal, and sends the audio signal to the audio jack for playing.
7. The head-mounted display device of claim 1 , wherein the head-mounted display device further comprises a power module, wherein the power module is connected to the communication interface;

   When the head mounted display device is connected to the portable terminal through the communication interface, the power module acquires a working power source from the portable terminal to supply power to each module in the head mounted display device.
8. The head-mounted display device according to claim 7, wherein a built-in battery and a charge management chip are further disposed in the head mounted display device, and the charge management chip is respectively connected to the communication interface, the built-in battery, and the power source Module

   When the head mounted display device is connected to the portable terminal through the communication interface, the charging management chip takes power from the portable terminal to charge the built-in battery;

   When the head mounted display device is not connected to the portable terminal through the communication interface or the portable terminal is low in power, the charging management chip takes power from the built-in battery to supply power to the power module.
9. A head-mounted display power supply system, including a head-mounted display device, a portable terminal, and a power supply device;

   The power supply device includes a first communication interface for connecting to the portable terminal, and a second communication interface for connecting the head mounted display device;

   A data channel is disposed between the first communication interface and the second communication interface, and the data communication is directly performed between the head mounted display device and the portable terminal through the data channel;

   When the power supply device simultaneously connects the portable terminal and the head mounted display device, the power supply device is connected through the second communication The port supplies power to the head mounted display device;

   When the power supply device is only connected to the portable terminal, the power supply device supplies power to the portable terminal through the first communication interface.
10. A head-mounted display power supply system according to claim 9, wherein

    The power supply device includes a casing formed by an upper casing and a lower casing, and a PCB board and a first built-in battery are disposed in the casing, and the first charging management chip and a charging interface are disposed on the PCB board, and the charging interface is The exposed housing is for connecting an external power source;

    The first communication interface and the second communication interface are both disposed on the PCB, respectively connected to the first charging management chip and exposing the housing;

    When the charging interface is not connected to an external power source, the first charging management chip takes power from the first internal battery to supply power to the portable terminal or the head mounted display device;

    When the charging interface is connected to the external power source, the first charging management chip directly receives power from the external power source, supplies power to the portable terminal or the head mounted display device, and simultaneously charges the first built-in battery.
11. The head-mounted display power supply system according to claim 9, wherein said first communication interface and said second communication interface are both USB Type-C interfaces, and said portable terminal is intelligent with a USB Type-C interface. A mobile phone or a tablet, and the head mounted display device is provided with a USB Type-C interface.
12. The head-mounted display power supply system according to claim 9, wherein the power supply device is a battery back clip having an approximate shape to the portable terminal;

    The two side edges of the power supply device are provided with a fixing structure for fixing the power supply device to the back of the portable terminal.
13. A head-mounted display power supply system according to claim 9, wherein

    The portable terminal is provided with a USB Type-C socket, and the head mounted display device is provided with a USB Type-C male connector with a cable;

    The first communication interface is a USB Type-C male head, and is disposed on an upper surface of the upper casing of the power supply device, and when the power supply device is fixed on a back surface of the portable terminal, the first communication interface is inserted into the USB Type-C female base of the portable terminal;

    The second communication interface is a USB Type-C socket, and is disposed at one end surface of the power supply device housing for inserting a USB Type-C male plug of the head mounted display device;

    The charging interface is a Micro USB interface disposed on one side of the power supply device housing.
14. The head-mounted display power supply system according to claim 9, wherein said power supply device further comprises a switch control circuit;

    The switch control circuit is configured to detect whether the second communication interface is connected to the head mounted display device; and when the second communication interface is detected to be connected to the head mounted display device, control the first communication Circuit breaking between the interface and the first charging management chip; controlling the first communication interface and the first charging management when detecting that the second communication interface is not connected to the head mounted display device The circuit between the chips is turned on.
15. The head-mounted display power supply system of claim 14, wherein the switch control circuit comprises a PMOS transistor, a triode, a push button switch, a first resistor, and a second resistor;

    The first end of the button switch is connected to the base of the triode, and is connected to the power output end of the first charging management chip through the first resistor, and the second end of the button switch is grounded;

    a collector of the triode is connected to a gate of the PMOS transistor, an emitter of the triode is grounded; a source of the PMOS transistor is connected to a power output end of the charge management chip, and a drain is connected to the first communication interface. The two ends of the second resistor are respectively connected to the source of the PMOS tube Pole and gate

    When the second communication interface is connected to the head mounted display device, the button switch is in an on state; when the second communication interface is not connected to the head mounted display device, the button switch is off Open state.
16. A head-mounted display power supply system according to claim 15, wherein said switch control circuit further comprises a diode;

    The anode of the diode is connected to the drain of the PMOS transistor, and the cathode of the diode is connected to the first communication interface.
17. A head-mounted display power supply system comprising a head-mounted display device and a portable terminal; the head-mounted display device is provided with a communication interface through which the head-mounted display device is connected to the portable terminal;

    When the head mounted display device is connected to the portable terminal, the portable terminal transmits audio and video data to the head mounted display device through the communication interface, exchanges data with the head mounted display device, and wears the headset The display device provides working power.
18. The head-mounted display power supply system of claim 17, wherein the portable terminal is provided with a wireless charging receiving module, and the head-mounted display power supply system further comprises a wireless power supply device;

    The wireless power supply device includes a casing composed of an upper casing and a lower casing, and a wireless charging and emitting module, a PCB board and a first built-in battery are disposed in the casing, and the first charging management chip is disposed on the PCB board And a charging interface, and the charging interface exposes the housing for connecting an external power source;

    The wireless power supply device supplies power to the portable terminal through the wireless charging and transmitting module.
19. The head-mounted display power supply system according to claim 18, wherein a wireless charging and transmitting module of the wireless power supply device is disposed above the PCB board near a position of the upper casing; the first built-in battery setting Below the PCB board, near the position of the lower case.
20. A head mounted display power supply system according to claim 18, wherein

    When the charging interface of the wireless power supply device is not connected to the external power source, the first charging management chip controls the first internal battery to supply power to the wireless charging transmitting module;

    When the charging interface is connected to the external power source, the first charging management chip controls the external power source to directly supply power to the wireless charging transmitting module, and simultaneously charges the first built-in battery.
21. A head mounted display power supply system according to claim 18, wherein

    The wireless power supply device is a battery back clip having an outer shape matching the portable terminal; the edge of the upper casing of the wireless power supply device is provided with a fixed structure for fixing the wireless power supply device to the portable terminal back.
22. The head-mounted display power supply system according to claim 18, wherein the charging interface of the wireless power supply device is a Micro USB interface disposed at an end surface of the wireless power supply device housing.

Images