CN113179377B

CN113179377B - Signal switching method of VR equipment and VR equipment

Info

Publication number: CN113179377B
Application number: CN202110284745.5A
Authority: CN
Inventors: 夏雨
Original assignee: Qingdao Xiaoniao Kankan Technology Co Ltd
Current assignee: Qingdao Xiaoniao Kankan Technology Co Ltd
Priority date: 2021-03-17
Filing date: 2021-03-17
Publication date: 2022-11-08
Anticipated expiration: 2041-03-17
Also published as: CN113179377A

Abstract

The invention discloses a signal switching method of VR equipment and the VR equipment. The method comprises the following steps: detecting a signal path between a VR device and a signal source, the signal path including: a DP signal channel for transmitting virtual reality pictures and a USB signal channel for transmitting virtual reality sounds; and if the power supply signal of the DP signal channel and the power supply signal of the USB signal channel exist at the same time, switching the media signal output by the VR device into the DP signal of the DP signal channel and the USB signal of the USB signal channel. By adopting the VR equipment signal switching method, when the DP signal source is connected, the power supply signal of the DP signal and the USB signal is detected simultaneously, the media signal output by the VR equipment is switched when the DP signal and the USB signal exist simultaneously, the synchronization of the construction sound and the picture of the virtual reality scene can be ensured, and the immersive experience of the user is improved.

Description

Signal switching method of VR equipment and VR equipment

Technical Field

The invention relates to the technical field of virtual reality, in particular to a signal switching method of VR equipment and the VR equipment.

Background

Virtual Reality (VR) is a technology that integrates computer technology, electronic information technology, and simulation technology, and gives people a sense of environmental immersion by simulating a Virtual Reality environment. As VR technology develops and matures, more and more people are willing to try virtual reality experiences and experience the immersive experiences they bring. However, since the resource markets of virtual reality games, videos, and the like are still incomplete, some virtual reality resources can only be displayed through specific devices and platforms, for example, many games and video resources depend on a Personal Computer (PC) platform, so that a user cannot experience well in various ways.

Although some VR devices can be connected to different signal sources to obtain virtual reality resource signals, in the signal switching process, the problem of asynchronism between sound and picture also exists, so that virtual reality experience is misplaced, and user experience is affected.

Disclosure of Invention

In view of the problem of experience dislocation existing when the prior art VR equipment switches the external virtual reality signal, the signal switching method of the VR equipment and the VR equipment are provided so as to overcome the problem.

In order to achieve the purpose, the following technical scheme is adopted in the application:

according to an aspect of the present application, there is provided a signal switching method of a VR device, the method including:

detecting a signal path between a VR device and a signal source, the signal path including: a DP signal channel for transmitting virtual reality pictures and a USB signal channel for transmitting virtual reality sounds;

and if the power supply signal of the DP signal channel and the power supply signal of the USB signal channel exist at the same time, switching the media signal output by the VR equipment into the DP signal of the DP signal channel and the USB signal of the USB signal channel.

Optionally, the method further comprises:

establishing a signal path between the VR device and the signal source, including: adopt connecting wire to connect VR equipment with the signal source, connecting wire includes DP plug, USB plug and Type-C plug, the pin of DP plug with the pin of USB plug respectively with the pin of Type-C plug corresponds the connection, the DP plug with USB plug connects the DP signal source, type-C plug connection VR equipment.

In accordance with another aspect of the present application, there is provided a VR device comprising: the system comprises a main control chip and a bridging chip;

the bridge chip establishes a DP signal channel for transmitting virtual reality pictures with a signal source;

the main control chip establishes a USB signal channel for transmitting virtual reality sound with a signal source;

the main control chip detects the DP signal channel and the USB signal channel simultaneously, and if the power signal of the DP signal channel and the power signal of the USB signal channel exist simultaneously, the media signal output by the VR device is switched to the DP signal of the DP signal channel and the USB signal of the USB signal channel.

Optionally, the VR device further comprises: type-C interface and connecting harness, connecting harness includes DP plug, USB plug and Type-C plug, the pin of DP plug with the pin of USB plug respectively with the pin of Type-C plug corresponds the connection, during the connection, the DP plug with USB plug connects the DP signal source, type-C plug connection the Type-C interface of VR equipment.

Optionally, the bridge chip is an MIPI chip; the MIPI chip is used for converting the DP picture signal into the MIPI signal and then broadcasting the MIPI signal.

Optionally, the VR device further comprises: and the switch chip is connected with the bridge chip and the main control chip, and the main control chip switches the picture signal output by the VR equipment into the DP signal of the DP signal channel by switching the output end of the switch chip.

Optionally, the main control chip is an SoC chip.

Optionally, a first detection circuit is disposed between the main control chip and a power pin of the DP signal channel, and the first detection circuit includes: the electrostatic protection circuit comprises an electrostatic protection diode, a voltage stabilizing diode, a filter circuit and a voltage dividing circuit.

Optionally, a second detection circuit is arranged between the main control chip and a power pin of the USB signal channel, the second detection circuit includes a voltage-controlled switch tube, and a control end of the voltage-controlled switch tube is connected to the control signal.

Optionally, the VR device further comprises: a screen, a speaker and a microphone;

the virtual reality picture is displayed through a screen of the VR equipment; the virtual reality sound is played through the loudspeaker or collected through the microphone.

To sum up, the beneficial effect of this application is:

this application is through DP signal channel and the USB signal channel that detects between VR equipment and the signal source, when DP signal channel and USB signal channel's power signal coexisted, the media signal that again exports VR equipment switched into the virtual reality picture and the sound of external signal source, can realize virtual reality scene picture and the synchronous switching of sound to when solving VR equipment switching signal, because the asynchronous experience dislocation that causes of sound picture, improve virtual reality user's immersive and experience.

Drawings

Fig. 1 is a schematic flowchart of a signal switching method of a VR device according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a VR device according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a VR device according to another embodiment of the present application;

fig. 4 is a schematic diagram of a work flow of the VR device of the embodiment shown in fig. 3;

fig. 5 is a diagram illustrating a DP power signal first detection circuit of a VR device according to an embodiment of the present application;

fig. 6 is a second detection circuit of a USB power signal of a VR device according to an embodiment of the present application.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The technical idea of the application is as follows: through DP signal channel and the USB signal channel between the detection VR equipment and the signal source, when DP signal channel and USB signal channel's power signal coexisted, switched the media signal of VR equipment output into the virtual reality picture and the sound of external signal source again, can realize the synchronous switching of virtual reality scene picture and sound to when solving VR equipment switching signal, because the experience dislocation that the sound picture asynchronous caused, improve virtual reality user's immersive experience.

Fig. 1 is a schematic flowchart of a signal switching method of a VR device according to an embodiment of the present disclosure. As shown in fig. 1, the signal switching method of the VR device includes:

step S110: detecting a signal path between a VR device and a signal source, the signal path including: a DP signal channel for transmitting virtual reality pictures, and a USB signal channel for transmitting virtual reality sounds.

Step S120: and if the power supply signal of the DP signal channel and the power supply signal of the USB signal channel exist at the same time, switching the media signal output by the VR device into the DP signal of the DP signal channel and the USB signal of the USB signal channel.

In the conventional use process of the DP signal source, the HPD (Hot Plug Detect) pulse signal is generally used as the switching mode of the DP signal, but the HPD pulse signal cannot be properly applied to the VR device. Because in the VR device, the DP signal needs to be connected to the DP bridge chip for conversion and play, and the audio signal needs to be transmitted from the main control chip through the USB interface, if the HPD pulse signal is adopted, the HPD pulse signal needs to be connected to the bridge chip and cannot be received by the main control chip, and the main control chip cannot be notified to control signal switching, which may cause the problem that the picture and the sound are not output simultaneously, resulting in the sound and picture dislocation. For example, a virtual reality picture of a DP signal source is played, while an audio signal of the VR device itself is played, so that the immersive use experience of the user is seriously affected.

In the above embodiment of the present application, by detecting the DP signal channel and the USB signal channel at the same time, and switching the media signal output by the VR device when the power signals of the DP signal source and the USB signal source exist at the same time, it can be ensured that the picture and the audio of the virtual reality scene are output synchronously, so that the use experience of the user is improved, the immersive experience of the user is not broken, the adaptive connection of the VR device to the DP signal source is realized, and the available resources of the VR device are enriched.

In one embodiment of the present application, the signal switching method of the VR device further includes: a signal path is established between the VR device and a signal source.

Specifically, establishing the signal path includes: adopt connecting wire to restraint and connect VR equipment and signal source, connecting wire restraints includes DP plug, USB plug and Type-C plug, and the pin of DP plug and the pin of USB plug correspond with the pin of Type-C plug respectively and are connected, DP plug and USB plug connection DP signal source, type-C plug connection VR equipment.

The application also discloses a VR device, fig. 2 is a schematic structural diagram of an embodiment of the VR device, and as shown in fig. 2, the VR device includes: the device comprises a main control chip and a bridge chip.

And the bridge chip establishes a DP signal channel for transmitting the virtual reality picture with the signal source.

And the main control chip and the signal source establish a USB signal channel for transmitting virtual reality sound.

When the media signal processing device works, the main control chip detects the DP signal channel and the USB signal channel at the same time, and if the power signal of the DP signal channel and the power signal of the USB signal channel exist at the same time, the media signal output by the VR device is switched into the DP signal of the DP signal channel and the USB signal of the USB signal channel.

Fig. 3 shows a schematic structural diagram of another embodiment of the VR device of the application. In the embodiment shown in fig. 3, the main control Chip is an SoC (System on Chip), and the SoC Chip itself may output an MIPI (Mobile Industry Processor Interface) signal to play the content of the VR device itself. The bridging chip is an MIPI chip, and the MIPI chip is used for broadcasting DP picture signals input by the external signal source after being converted into MIPI signals, so that VR equipment can play the contents of the DP signal source. Wherein, the bridge chip is an MIPI chip VXR7200. As shown in fig. 4, a DP signal of a signal source (PC) is transmitted to the bridge chip VXR7200, and a power supply signal of the DP signal is simultaneously output to the SoC chip for SoC chip detection. And transmitting the USB2.0 signal to the SoC chip. Therefore, the SoC chip can realize the switching of the media signals output by the VR equipment by simultaneously detecting the DP signals and the power signals of the USB signals so as to ensure the synchronization of sound and pictures of the virtual reality scene created for the user.

Also, as shown in fig. 3, the VR device of this embodiment further includes: the switch chip (MIPI switch), the switch chip is connected with bridge chip and main control chip, and the main control chip passes through the output of change over switch chip, switches the picture signal of VR equipment output into the DP signal of DP signal channel.

In one embodiment of the present application, the VR device further comprises: type-C interface and connection pencil.

The connecting harness comprises a DP plug, a USB plug and a Type-C plug, pins of the DP plug and pins of the USB plug are respectively connected with pins of the Type-C plug in a corresponding mode, during connection, the DP plug is connected with a USB plug to form a DP signal source, and the Type-C plug is connected with a Type-C interface of VR equipment.

Wherein, the Type-C interface of VR equipment corresponds with each pin function of the Type-C plug of connecting wire harness, and partly be used for transmitting the DP signal, uses with the DP interface collocation of signal source, and another part is used for transmitting the USB signal, uses with the USB interface collocation of signal source. From this, this application is compatible with the DP interface and the USB interface of signal source simultaneously with a Type-C interface, and it is more convenient to use. Wherein, the self-defined order of the specific pin of Type-C interface, technical personnel in the field can set up by oneself according to the interface protocol, and this application does not limit.

Fig. 4 shows a schematic workflow diagram of the VR device of the embodiment shown in fig. 3. As shown in fig. 4:

in step S410, the SoC chip first detects whether the DP power source exists. If yes, continue to execute step S420; if not, step S430 is executed to control the MIPI switch not to operate, and display SoC content, so as to continuously play the resource of the VR device.

In step S420, the SoC chip continues to detect whether the USB signal exists. If yes, executing step S440, controlling the MIPI switch to switch the screen channel, and displaying the DP signal content of the PC; if not, step S430 is still executed to control the MIPI switch to be inactive, and SoC content is displayed so as to continuously play the resource of the VR device.

Therefore, through the steps, the embodiment realizes signal switching when the VR device is connected with a DP signal source (such as a PC), and ensures virtual reality sound and picture synchronous playing of the DP signal source.

In one embodiment of the present application, a first detection circuit is disposed between the main control chip and the power pin of the DP signal channel, and fig. 5 shows an exemplary embodiment of the first detection circuit. As shown in fig. 5, the first detection circuit includes: the ESD protection circuit comprises an electrostatic protection diode ESD1, a voltage stabilizing diode D2, a filter circuit and a voltage dividing circuit.

The ESD1 is used to prevent the electrostatic voltage from damaging the circuit. The voltage stabilizing diode D2 limits the voltage value of the DP power supply signal (DP PWR) through reverse breakdown, and the safety of the circuit is protected. The filter circuit comprises a first inductor L1, a first capacitor C1 and a second capacitor C2, and is used for filtering interference. The voltage division circuit comprises a resistor R1 and a resistor R3, voltage division of a DP power supply signal (DP PWR) is achieved, and the divided signal is transmitted to a main control chip (DP DET) through a bridging resistor R2 and used for achieving power supply signal detection of the DP signal.

In an embodiment of the present application, a second detection circuit is disposed between the main control chip and the power supply pin of the USB signal channel, and fig. 6 shows an exemplary embodiment of the second detection circuit. As shown in fig. 6, the second detection circuit includes a voltage-controlled switch tube U1, a control terminal 1 of the voltage-controlled switch tube U1 is connected to the control signal VREG through a cross-over resistor R4, a drain 1 of the switch tube is connected to the USB power pin to receive the power signal (USB 5V), and a source 2 of the switch tube U1 is connected to the main control chip through a cross-over resistor R5 to detect the USB power signal. Through the second detection circuit, the embodiment can also realize the access control of the USB 5V voltage signal through the VREG control signal, and switch on or off the USB signal of the DP signal source according to the requirement.

In one embodiment of the present application, the VR device further comprises: a screen, a speaker and a microphone. The virtual reality picture can be displayed through a screen of the VR equipment; the virtual reality sound can be played through a loudspeaker or collected through a microphone.

In summary, by using the VR device signal switching method of the present application, when a DP signal source is connected, the DP signal and the power signal of the USB signal are detected simultaneously, and the media signal output by the VR device is switched when the DP signal and the USB signal exist simultaneously, so that it is ensured that the creation sound and the picture of the virtual reality scene are synchronized, and the immersive experience of the user is improved.

While the foregoing is directed to embodiments of the present invention, other modifications and variations of the present invention may be devised by those skilled in the art in light of the above teachings. It should be understood by those skilled in the art that the foregoing detailed description is for the purpose of better explaining the present invention, and the scope of the present invention should be determined by the scope of the appended claims.

Claims

1. A signal switching method of VR equipment is characterized in that the VR equipment comprises a switch chip, a main control chip and a bridge chip, wherein the switch chip is connected with the bridge chip and the main control chip, the main control chip switches an image signal output by the VR equipment into a DP signal of a DP signal channel by switching the output end of the switch chip, and a power supply signal of the DP signal is simultaneously output to the main control chip;

the method comprises the following steps:

and if the power supply signal of the DP signal channel and the power supply signal of the USB signal channel exist at the same time, switching the media signal output by the VR equipment into the DP signal of the DP signal channel and the USB signal of the USB signal channel through the switch chip.

2. The method of signal switching for a VR device of claim 1, further comprising:

3. A VR device, comprising: the main control chip switches the image signal output by the VR equipment into a DP signal of a DP signal channel by switching the output end of the switch chip, and a power supply signal of the DP signal is simultaneously output to the main control chip;

4. The VR device of claim 3 further comprising: a Type-C interface and a connecting wire harness;

the connecting wire harness comprises a DP plug, a USB plug and a Type-C plug, wherein pins of the DP plug and pins of the USB plug are respectively connected with pins of the Type-C plug in a corresponding mode, during connection, the DP plug is connected with the USB plug to connect the DP signal source, and the Type-C plug is connected with a Type-C interface of VR equipment.

5. The VR device of claim 3 wherein the bridge chip is a MIPI chip; the MIPI chip is used for converting the DP picture signal into the MIPI signal and then broadcasting the MIPI signal.

6. The VR device of claim 3, wherein the master chip is an SoC chip.

7. The VR device of claim 3, wherein a first detection circuit is disposed between the master chip and a power pin of the DP signal path, the first detection circuit comprising: the electrostatic protection circuit comprises an electrostatic protection diode, a voltage stabilizing diode, a filter circuit and a voltage dividing circuit.

8. The VR device of claim 3 wherein a second detection circuit is disposed between the master control chip and a power pin of the USB signal channel, the second detection circuit including a voltage-controlled switch, a control terminal of the voltage-controlled switch being connected to a control signal.

9. The VR device of claim 3 further comprising: a screen, a speaker and a microphone;