CN221329021U - Signal distribution equipment and virtual reality display system - Google Patents
Signal distribution equipment and virtual reality display system Download PDFInfo
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- CN221329021U CN221329021U CN202323142824.6U CN202323142824U CN221329021U CN 221329021 U CN221329021 U CN 221329021U CN 202323142824 U CN202323142824 U CN 202323142824U CN 221329021 U CN221329021 U CN 221329021U
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Abstract
The application provides a signal distribution device applied to a virtual reality display system with a 3D display adopting a frame sequence, which comprises an input circuit, a control circuit and an output circuit. The input circuit is connected with the computer terminal and is used for acquiring display content sent by the computer terminal and acquiring a synchronous signal sent by the computer terminal during 3D display; the control circuit is connected with the input circuit and used for acquiring display content and a synchronous signal; the output circuit comprises a plurality of output elements which are respectively connected with the control circuit and are correspondingly connected with a plurality of display terminals one by one; the output element is used for receiving the display content sent by the control circuit and transmitting the synchronous signal to the display terminal connected with the output element. Therefore, the display content and the synchronous signal received by each display terminal are the same, and the problem of asynchronous alternate display of left-eye images and right-eye images is solved. Meanwhile, the application realizes that one computer terminal drives a plurality of display terminals to perform 3D display (adopting a frame sequence), thereby greatly reducing the cost.
Description
Technical Field
The present application relates to the field of virtual reality technologies, and in particular, to a signal distribution device and a virtual reality display system.
Background
Three-dimensional (3D) display is that the left and right eyes of a person receive different pictures respectively, and then the brain superimposes and regenerates image information to form an image with a stereoscopic effect. Based on the principle of 3D display, there are now a variety of 3D display modes, such as frame sequence (also called frame sequential), frame encapsulation, up-down format, side-to-side format, etc.
The up-down format and the left-right format are inferior to the frame sequence and frame encapsulation in effect because they halve resolution; frame encapsulation is a standard output format of 3D blue light, and is mainly used on blue light equipment, and has a narrow application range. The frame sequence can be used on a common PC, and the frames are transmitted in a mode of 2 times of frame rate (the left and right eye frames are alternately displayed), so that the 3D display mode of the frame sequence is widely applied due to the advantages of simple processing mode, wide application range and the like.
Fig. 1 is a schematic diagram of a circuit structure of a related art 3D display using a frame sequence. Specifically, the computer terminal is connected to the display terminal through a multimedia cable (e.g., through an HDMI cable, a DP cable) to transmit display content data to the display terminal; and, the computer terminal is also connected to the display terminal through a data cable (e.g., a USB cable) to transmit a synchronization signal to the display terminal at the time of 3D display. Therefore, the display terminal determines whether the left eye image or the right eye image should be displayed according to the synchronization signal, so that the 3D effect can be seen by the user in combination with the 3D glasses.
Based on this, when the 3D display adopts a frame sequence and in some application scenarios, multiple sets of devices are required to perform 3D display respectively in the related art, so as to achieve the purpose of multi-screen display. Illustratively, as shown in fig. 2, a display counter is provided with a plurality of sets of devices as shown in fig. 1, and when each set of devices uses a frame sequence for 3D display, a user wears 3D glasses, so that a 3D effect can be seen on each display terminal. However, since each set of equipment is independent, it is possible that the left-eye image is currently displayed by the display terminal in the set of equipment, and the right-eye image is currently displayed by the display terminal in the set of equipment, that is, the problem of asynchronous alternate display of the left-eye image and the right-eye image can exist, so that the viewing experience of a user is affected; and it is also known that when the 3D display adopts a frame sequence and requires multi-screen display, multiple sets of devices are required in the related art, and the required cost is too high.
It should be noted that the foregoing is only for aiding in understanding the technical solution of the present application, and is not an admission that the foregoing is prior art.
Disclosure of utility model
Therefore, the application provides the signal distribution equipment and the virtual reality display system, the synchronous signals and the display contents sent by the computer terminals are obtained through the signal distribution equipment, and then the synchronous signals and the display contents are distributed to the plurality of display terminals, so that the aim that one computer terminal drives the plurality of display terminals to perform 3D display (adopting a frame sequence) is fulfilled, the problem of asynchronous alternate display of left-eye images and right-eye images can be solved, and meanwhile, the cost is greatly reduced.
In a first aspect, the present application provides a signal distribution device applied to a 3D display virtual reality display system employing a frame sequence, the signal distribution device comprising:
the input circuit is connected with a computer terminal in the virtual reality display system and is used for acquiring display content sent by the computer terminal and acquiring a synchronous signal sent by the computer terminal during 3D display;
The control circuit is connected with the input circuit and used for acquiring display content and a synchronous signal sent by the input circuit; and
The output circuit comprises a plurality of output elements, and the plurality of output elements are respectively connected with the control circuit and are correspondingly connected with a plurality of display terminals in the virtual reality display system one by one; the output element is used for receiving the display content and the synchronous signal sent by the control circuit and forwarding the display content and the synchronous signal to the display terminal connected with the output element.
The signal distribution device further comprises a signal enhancement circuit, wherein the signal enhancement circuit is connected with the control circuit and each output element; the signal enhancement circuit is used for enhancing the driving capability of the synchronous signal.
In the signal distribution device provided by the application, the signal enhancement circuit comprises a first switching tube and a second switching tube;
The first switch tube is characterized in that a control pin is connected with the control circuit through a first resistor, the first switch pin is connected with a preset voltage through a second resistor, and the second switch pin is grounded; the connection part of the control pin of the first switching tube and the first resistor is grounded through a third resistor;
The control pin of the second switching tube is connected with the connection part of the first switching pin of the first switching tube and the second resistor, the first switching pin is connected with a preset voltage through a fourth resistor, and the second switching pin is grounded; the connection part of the first switch pin of the second switch tube and the fourth resistor is respectively connected with each output element.
The signal distribution device provided by the application further comprises a voltage processing circuit; the voltage processing circuit is used for carrying out step-down processing on the power supply voltage and outputting the preset voltage.
In the signal distribution device provided by the application, the output element is a multimedia output interface; the preset pins in the multimedia output interface are used for sending the display content to the display terminal connected with the preset pins, and the idle pins in the multimedia output interface are used for sending the synchronous signals to the display terminal connected with the idle pins.
In the signal distribution device provided by the application, the output element is a multimedia output interface and a data output interface; the multimedia output interface is used for sending the display content to the display terminal connected with the multimedia output interface, and the data output interface is used for sending the synchronous signal to the display terminal connected with the data output interface.
In the signal distribution apparatus provided by the present application, the number of the output elements is four or eight.
In the signal distribution device provided by the application, the input circuit comprises a signal input interface and a multimedia input interface;
The signal input interface is connected with the computer terminal and the control circuit and is used for acquiring a synchronous signal sent by the computer terminal during 3D display;
The multimedia input interface is connected with the computer terminal and the control circuit and is used for acquiring display content sent by the computer terminal.
In a second aspect, the present application provides a virtual reality display system, comprising a signal distribution device according to the first aspect, a computer terminal and a plurality of display terminals.
According to the technical scheme provided by the application, the control circuit acquires the display content and the synchronous signal sent by the computer terminal through the input circuit, and forwards the display content and the synchronous signal to each display terminal through each output element, so that the display content and the synchronous signal received by each display terminal are identical, each display terminal synchronously and alternately displays left and right eye images when 3D display is carried out by adopting a frame sequence, the problem of asynchronous alternate display of the left and right eye images in the related technology is solved, and the viewing experience of a user is improved. Meanwhile, the application realizes that one computer terminal can drive a plurality of display terminals to carry out 3D display (adopting a frame sequence), thereby greatly reducing the cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a circuit structure of a related art 3D display using a frame sequence;
FIG. 2 is a schematic diagram of an exemplary circuit configuration for implementing a multi-screen presentation in the related art;
Fig. 3 is a schematic circuit diagram of a signal distribution device according to an embodiment of the present application;
fig. 4 is a schematic circuit diagram of another signal distribution device according to an embodiment of the present application;
FIG. 5 is an exemplary waveform diagram of a synchronization signal according to an embodiment of the present application;
FIG. 6 is a waveform diagram of an exemplary synchronization signal received by a display terminal according to an embodiment of the present application;
FIG. 7 is a schematic diagram of a circuit structure of a signal enhancing circuit according to an embodiment of the present application;
FIG. 8 is a schematic diagram of a circuit structure of a voltage processing circuit according to an embodiment of the present application;
Fig. 9 is a schematic circuit diagram of an input circuit according to an embodiment of the application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The flow diagrams depicted in the figures are merely illustrative and not necessarily all of the elements and operations/steps are included or performed in the order described. For example, some operations/steps may be further divided, combined, or partially combined, so that the order of actual execution may be changed according to actual situations.
It is to be understood that the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should also be understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
The signal distribution device 100 provided by the embodiment of the application is applied to a virtual reality display system adopting a frame sequence for 3D display. As shown in fig. 3, an input circuit 110, a control circuit 120, and an output circuit 130 may be included.
The input circuit 110 is connected to the computer terminal 200 in the virtual reality display system, and is used for acquiring display contents transmitted by the computer terminal 200 and acquiring a synchronization signal transmitted by the computer terminal 200 during 3D display. In the embodiment of the present application, the display content sent by the computer terminal 200 refers to display data (i.e., picture data displayed on a screen), and the synchronization signal is a synchronization signal sent by the computer terminal 200 in a 3D display mode using a frame sequence, for indicating whether the display terminal 300 displays a left eye image or a right eye image.
The control circuit 120 is connected to the input circuit 110, and is configured to obtain the display content and the synchronization signal sent by the input circuit 110. In an embodiment of the present application, the control circuit 120 may include, but is not limited to, a micro control unit (Microcontroller Unit, MCU) that implements the technical features related to the control circuit 120 mentioned in the embodiment of the present application.
The output circuit 130 includes a plurality of output elements 131, and the plurality of output elements 131 are respectively connected to the control circuit 120; and, the plurality of output elements 131 are connected to the plurality of display terminals 300 in the virtual reality display system in one-to-one correspondence, that is, one output element 131 is connected to one display terminal 300. The output element 131 is configured to receive the display content and the synchronization signal sent by the control circuit 120 and forward the display content and the synchronization signal to the display terminals 200 connected thereto, that is, each display terminal 300 receives the same display content and the synchronization signal.
In the embodiment of the present application, the control circuit 120 obtains the display content and the synchronization signal sent by the computer terminal 200 through the input circuit 110, and forwards the display content and the synchronization signal to each display terminal 300 through each output element 131, so that it can be known that the display content and the synchronization signal received by each display terminal 300 are the same, and thus each display terminal synchronously and alternately displays left and right eye images when performing 3D display by using a frame sequence, thereby solving the problem of asynchronous alternating display of left and right eye images in the related art and improving the user's viewing experience. Meanwhile, the embodiment of the application realizes that one computer terminal 200 can drive a plurality of display terminals 300 to perform 3D display (adopting a frame sequence), thereby greatly reducing the cost.
In some embodiments, as shown in fig. 4, the signal distribution apparatus 100 may further include a signal enhancing circuit 140, where the signal enhancing circuit 140 is connected to the control circuit 120 and each of the output elements 130, and the signal enhancing circuit 140 is used to enhance driving capability of the synchronization signal. Specifically, since the plurality of output elements 130 may be connected in parallel, if the driving capability of the synchronization signal is not strong enough, for example, the signal current is not large enough, the 3D display effect of the display terminal 300 may be affected. Illustratively, fig. 5 illustrates an exemplary waveform diagram of the synchronization signal, in which a high level (e.g., 3.7V) may be used to instruct the display terminal 300 to display the left-eye image and a low level may be used to instruct the display terminal 300 to display the right-eye image. Assuming that a plurality of display terminals 300 are connected to the output element 131 at this time, the 3D display effect of one or more display terminals 300 may be affected due to the insufficient driving capability of the synchronization signal, for example, fig. 6 shows a waveform diagram of the synchronization signal received by a certain display terminal 300, and as can be seen from the figure, the high level is significantly lower than 3.7V, which may affect the 3D display effect of the display terminal 300. For this reason, the signal enhancing circuit 140 enhances the driving capability of the synchronization signal to prevent the 3D display effect of the display terminal 300 from being affected.
In some embodiments, as shown in fig. 7, the signal enhancing circuit 140 may include a first switching tube Q1, a second switching tube Q2, a first resistor R1, a second resistor R2, a third resistor R3, and a fourth resistor R4. The control pin of the first switching tube Q1 is connected to the control circuit 120 through a first resistor R1, the first switching pin of the first switching tube Q1 is connected to a preset voltage VCC1 (e.g., 3.7V, etc.) through a second resistor R2, the second switching pin of the first switching tube Q1 is grounded, and in addition, the connection between the control pin of the first switching tube Q1 and the first resistor R1 is grounded through a third resistor R3. The control pin of the second switching tube Q2 is connected to a connection portion between the first switching pin of the first switching tube Q1 and the second resistor R2, the first switching pin of the second switching tube Q2 is connected to a preset voltage VCC2 (e.g., 3.7V, etc.) through the fourth resistor R4, and the second switching pin of the second switching tube Q2 is grounded. In addition, the connection between the first switch pin of the second switching tube Q2 and the fourth resistor R4 is connected to each output element 130.
Specifically, when the control circuit 120 outputs a high level segment of the synchronization signal, the first switching tube Q1 is turned on, and the preset voltage VCC1 is sequentially input to the ground through the second resistor R2 and the first switching tube Q1, at this time, since the control pin of the second switching tube Q2 is not input, the second switching tube Q2 is turned off, so that the preset voltage VCC2 is output to each output element 130 through the fourth resistor R4, and it is understood that each output element 130 receives a high level at this time, that is, each display terminal 300 receives a high level. When the control circuit 120 outputs a low level segment of the synchronization signal, the first switching tube Q1 is turned off, the preset voltage VCC1 is input to the control pin of the second switching tube Q2 through the second resistor R2, so that the second switching tube Q2 is turned on, and the preset voltage VCC2 is sequentially input to the ground through the fourth resistor R4 and the second switching tube Q2, and it is understood that no voltage is input to each output element 130 at this time, and thus each output element 130 receives a low level, that is, each display terminal 300 receives a low level. From this, the signal enhancing circuit 140 can prevent the driving capability of the synchronization signal from being insufficient to affect the 3D display effect of the display terminal 300, thereby ensuring the reliability.
In some embodiments, as shown in fig. 8, the synchronization signal distribution device 100 may further include a voltage processing circuit 150, where the voltage processing circuit 150 is configured to perform a step-down process on the power supply voltage and output a preset voltage. For example, the power supply voltage may be 5V, the preset voltage may be 3.7V, and the voltage processing circuit 150 may step down the power supply voltage from 5V to 3.7V.
In some embodiments, output element 131 may be a multimedia output interface, such as a DP interface. The preset pins in the multimedia output interface are used for transmitting the display content to the display terminal 300 connected with the preset pins, and the idle pins in the multimedia output interface are used for transmitting the synchronous signals to the display terminal 300 connected with the idle pins. In this embodiment, the preset pins in the multimedia output interface refer to pins for transmitting video data specified in the prior art, for example, pins required for transmitting video data specified in the DP interface; and the idle pins in the multimedia output interface refer to pins that are not needed for transmitting video data, for example, pins that are not needed for transmitting video data, which are specified in the DP interface. Therefore, the present embodiment realizes multiplexing of the multimedia output interface, so that the multimedia output interface further has a function of transmitting a synchronization signal on the original function (transmitting display content). In other embodiments, the output element 131 is a multimedia output interface as well as a data output interface. Wherein a multimedia output interface (e.g., a DP interface) is used to transmit display contents to the display terminal 300 connected thereto, and a data output interface (e.g., a USB interface) is used to transmit a synchronization signal to the display terminal 300 connected thereto. Illustratively, the number of output elements 131 may be four or eight.
In one embodiment, as shown in fig. 9, the input circuit 110 may include a signal input interface 111 and a multimedia input interface 112. The signal input interface 111 connects the computer terminal 200 and the control circuit 120, and is used for acquiring a synchronization signal sent by the computer terminal 200 during 3D display, for example, the signal input interface may be a USB interface; the multimedia input interface 112 connects the computer terminal 200 and the control circuit 120, and is used for acquiring display content sent by the computer terminal 200, for example, the signal input interface may be an HDMI interface or a DP interface.
The embodiment of the present application further provides a virtual reality display system, which includes a signal distribution device 100, a computer terminal 200 and a plurality of display terminals 300 as described above, and the specific implementation is discussed above.
While the application has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the application. Therefore, the protection scope of the application is subject to the protection scope of the claims.
Claims (9)
1. A signal distribution apparatus for application to a 3D display virtual reality display system employing a sequence of frames, the signal distribution apparatus comprising:
the input circuit is connected with a computer terminal in the virtual reality display system and is used for acquiring display content sent by the computer terminal and acquiring a synchronous signal sent by the computer terminal during 3D display;
The control circuit is connected with the input circuit and used for acquiring display content and a synchronous signal sent by the input circuit; and
The output circuit comprises a plurality of output elements, and the plurality of output elements are respectively connected with the control circuit and are correspondingly connected with a plurality of display terminals in the virtual reality display system one by one; the output element is used for receiving the display content and the synchronous signal sent by the control circuit and forwarding the display content and the synchronous signal to the display terminal connected with the output element.
2. The signal distribution apparatus according to claim 1, further comprising a signal enhancement circuit connected to the control circuit and to each of the output elements, respectively; the signal enhancement circuit is used for enhancing the driving capability of the synchronous signal.
3. The signal distribution device of claim 2, wherein the signal enhancement circuit comprises a first switching tube and a second switching tube;
The first switch tube is characterized in that a control pin is connected with the control circuit through a first resistor, the first switch pin is connected with a preset voltage through a second resistor, and the second switch pin is grounded; the connection part of the control pin of the first switching tube and the first resistor is grounded through a third resistor;
The control pin of the second switching tube is connected with the connection part of the first switching pin of the first switching tube and the second resistor, the first switching pin is connected with a preset voltage through a fourth resistor, and the second switching pin is grounded; the connection part of the first switch pin of the second switch tube and the fourth resistor is respectively connected with each output element.
4. The signal distribution device of claim 3, further comprising a voltage processing circuit; the voltage processing circuit is used for carrying out step-down processing on the power supply voltage and outputting the preset voltage.
5. The signal distribution device of claim 1, wherein the output element is a multimedia output interface; the preset pins in the multimedia output interface are used for sending the display content to the display terminal connected with the preset pins, and the idle pins in the multimedia output interface are used for sending the synchronous signals to the display terminal connected with the idle pins.
6. The signal distribution device of claim 1, wherein the output element is a multimedia output interface and a data output interface; the multimedia output interface is used for sending the display content to the display terminal connected with the multimedia output interface, and the data output interface is used for sending the synchronous signal to the display terminal connected with the data output interface.
7. The signal distribution device according to claim 5 or 6, wherein the number of output elements is four or eight.
8. The signal distribution device of any of claims 1-6, wherein the input circuit comprises a signal input interface and a multimedia input interface;
The signal input interface is connected with the computer terminal and the control circuit and is used for acquiring a synchronous signal sent by the computer terminal during 3D display;
The multimedia input interface is connected with the computer terminal and the control circuit and is used for acquiring display content sent by the computer terminal.
9. A virtual reality display system comprising a signal distribution device according to any of claims 1-8, a computer terminal and a plurality of display terminals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323142824.6U CN221329021U (en) | 2023-11-21 | 2023-11-21 | Signal distribution equipment and virtual reality display system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323142824.6U CN221329021U (en) | 2023-11-21 | 2023-11-21 | Signal distribution equipment and virtual reality display system |
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| CN221329021U true CN221329021U (en) | 2024-07-12 |
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| CN202323142824.6U Active CN221329021U (en) | 2023-11-21 | 2023-11-21 | Signal distribution equipment and virtual reality display system |
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