CN209015704U - A kind of interface circuit and display equipment - Google Patents
A kind of interface circuit and display equipment Download PDFInfo
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- CN209015704U CN209015704U CN201821686339.1U CN201821686339U CN209015704U CN 209015704 U CN209015704 U CN 209015704U CN 201821686339 U CN201821686339 U CN 201821686339U CN 209015704 U CN209015704 U CN 209015704U
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Abstract
The embodiment of the present application provides a kind of interface circuit and display equipment, wherein display equipment includes: display screen, control circuit, bridgt circuit, at least two audio-video interfaces and the switching circuit connecting at least two audio-video interfaces；Switching circuit is connect with bridgt circuit, and when for occurring being in the target interface of connection status at least two audio-video interfaces, bridgt circuit is connected to target interface；Control circuit is connect with bridgt circuit, and the vision signal from target interface is converted to the signal format that display screen is supported from the signal format that target interface is supported for controlling bridgt circuit；Display screen is used to show the vision signal from target interface after the conversion of bridgt circuit format.In the embodiment of the present application, the compatible various types of video source devices of equipment are shown, be greatly improved flexibility when display equipment uses.
Description
Technical Field
The present application relates to the field of electronic technologies, and in particular, to an interface circuit and a display device.
Background
At present, most of the virtual reality devices need external video input devices, such as PCs and the like.
The virtual reality device and the video source device are usually accessed by a wired interface. Since the types of wired interfaces provided by different video source devices may be different, the virtual reality device cannot be compatible with different types of video source devices. This greatly reduces the flexibility of the virtual reality device in use.
SUMMERY OF THE UTILITY MODEL
Aspects of the present disclosure provide an interface circuit and a display device to improve flexibility of the display device in use.
An embodiment of the present application provides an interface circuit, including: the audio/video switching device comprises a control circuit, a bridge circuit, at least two audio/video interfaces and a switching circuit connected with the at least two audio/video interfaces;
the switching circuit is connected with the bridge circuit and is used for communicating the bridge circuit with a target interface when the target interface in a connection state appears in the at least two audio and video interfaces;
the control circuit is connected with the bridge circuit and used for controlling the bridge circuit to convert the video signal from the target interface from the signal format supported by the target interface into a specified signal format.
An embodiment of the present application further provides a display device, including: the device comprises a display screen, a control circuit, a bridge circuit, at least two audio and video interfaces and a switching circuit connected with the at least two audio and video interfaces; the switching circuit is connected with the bridge circuit and is used for communicating the bridge circuit with a target interface when the target interface in a connection state appears in the at least two audio and video interfaces; the control circuit is connected with the bridge circuit and is used for controlling the bridge circuit to convert the video signal from the target interface from the signal format supported by the target interface into the signal format supported by the display screen;
the display screen is used for displaying the video signal from the target interface after the format conversion of the bridge circuit.
The embodiment of the application also provides a display method, which is suitable for display equipment, wherein the display equipment comprises at least two audio/video interfaces, a switching circuit connected with the at least two audio/video interfaces and a bridge circuit connected with the switching circuit; the method comprises the following steps:
when a target interface in a connection state appears in the at least two audio/video interfaces, the switching circuit communicates the bridge circuit with the target interface so as to receive a video signal from video source equipment through the target interface; and
and controlling the bridge circuit to convert the video signal from the target interface from the signal format supported by the target interface into the signal format supported by the display screen of the display device and output the signal format to the display screen for displaying.
Embodiments of the present application also provide a computer-readable storage medium storing computer instructions, which, when executed by one or more processors, cause the one or more processors to execute the aforementioned display method.
In the embodiment of the application, at least two audio and video interfaces are arranged on the display device, and the switching circuit can communicate a target interface in a connection state of the at least two audio and video interfaces with the bridge circuit, so that a video signal is successfully transmitted to the bridge circuit through the target interface and a passage between the target interface and the bridge circuit; and the control circuit can control the bridge circuit to convert the signal format supported by the target interface into a specified signal format so as to successfully transmit the video signal to a display screen of the display device for display. Therefore, in the embodiment of the application, the audio/video interface communicated with the bridge circuit can be flexibly switched through the switching circuit, and the bridge circuit is flexibly controlled by the control circuit to perform signal format conversion on the accessed video signal, so as to obtain the video signal in the specified signal format. This makes the display device compatible with various types of video source devices, and can greatly improve the flexibility of the display device when in use.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1a is a schematic structural diagram of a display device according to an embodiment of the present disclosure;
fig. 1b is a schematic structural diagram of another display device provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of an interface circuit according to another embodiment of the present application;
fig. 3 is a flowchart illustrating a display method according to another embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the prior art, a wired interface is usually used between a virtual reality device and a video input device for video access. Since the types of wired interfaces provided by different video source devices may be different, the virtual reality device cannot be compatible with different types of video source devices. This greatly reduces the flexibility of the virtual reality device in use. To address these problems in the prior art, in some embodiments of the present application: the switching circuit can communicate a target interface in a connection state of the at least two audio/video interfaces with the bridge circuit, so that video signals are successfully transmitted to the bridge circuit through the target interface and a passage between the target interface and the bridge circuit in sequence; and the control circuit can control the bridge circuit to convert the signal format supported by the target interface into a specified signal format so as to successfully transmit the video signal to the display screen for display. Therefore, in the embodiment of the application, the audio/video interface communicated with the bridge circuit can be flexibly switched through the switching circuit, and the bridge circuit is flexibly controlled by the control circuit to perform signal format conversion on the accessed video signal, so as to obtain the video signal in the specified signal format. This makes the display device compatible with various types of video source devices, and can greatly improve the flexibility of the display device when in use.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Fig. 1a is a schematic structural diagram of a display device according to an embodiment of the present application. As shown in fig. 1, the display device 00 includes: the device comprises a display screen 50, a control circuit 10, a bridge circuit 20, at least two audio/video interfaces 30 and a switching circuit 40 connected with the at least two audio/video interfaces 30;
the switching circuit 40 is connected to the bridge circuit 20, and is configured to communicate the bridge circuit 20 with a target interface when the target interface in a connected state appears in the at least two audio/video interfaces 30; the control circuit 10 is connected to the bridge circuit 20, and is configured to control the bridge circuit 20 to convert the video signal from the target interface from a signal format supported by the target interface to a signal format supported by the display screen 50;
the display screen 50 is used for displaying the video signal from the target interface after being format-converted by the bridge circuit 20.
In this embodiment, the display device 00 may be various devices with video source access requirements, for example, a virtual reality device or an augmented reality device. In physical implementation, the display device 00 may be a virtual reality helmet, an augmented reality helmet, virtual reality glasses, augmented reality glasses, or the like, which is not limited in this embodiment.
When the display device 00 performs video access in a wired manner, the connection between the audio/video interface 30 of the display device 00 and the audio/video interface of the video source device 60 needs to be established through a connecting line such as a cable. In this embodiment, the number of the audio/video interfaces 30 of the display device 00 is at least two, and the signal formats supported by the audio/video interfaces 30 may be different, for example, the audio/video interfaces 30 may be High Definition Multimedia Interfaces (HDMI), High Definition digital display interfaces (DisplayPort, DP), or interfaces supporting other signal formats, which is not limited in this embodiment. In this way, the audio-video interface 30 provided externally by the display device 00 can support a plurality of signal formats.
Accordingly, when the display device 00 and the video source device 60 are connected, one end of the cable may be inserted into the audio/video interface 30 on the video source device 60, and the other end of the cable may be inserted into the corresponding audio/video interface 30 on the display device 00 according to the signal format supported by the audio/video interface 30 on the video source device 60, so as to establish a path between the audio/video interface 30 of the display device 00 and the audio/video interface of the video source device 60. For example, when the audio/video interface of the video source device 60 is an HDMI interface, two ends of the cable may be connected to the HDMI interface of the video source device 60 and the HDMI interface of the display device 00, respectively. The video source device 60 may be a PC, a television, or other devices capable of providing video source, which is not limited in this embodiment. To this end, the video signal sent by the video source device 60 can successfully reach the audio/video interface 30 on the display device 00, which is adapted to the signal format supported by the video source device 60.
At least two audio/video interfaces 30 on the display device 00 are connected to the switching circuit 40, and in some practical applications, the at least two audio/video interfaces 30 and the switching circuit 40 may be disposed in the same chip, which is not limited in this embodiment. The connection state of the audio-video interface 30 includes being in a connection state and being in a non-connection state. When the two ends of the cable are correctly inserted into the audio/video interface 30 adapted to the display device 00 and the video source device 60, it is determined that the audio/video interface 30 on the display device 00 is in a connection state; when the two ends of the cable are not correctly inserted into the audio/video interfaces 30 adapted on the display device 00 and the video source device 60, or a cable is not inserted into the audio/video interface 30 on the display device 00, it may be determined that the audio/video interface 30 on the display device 00 is in a non-connection state, and of course, other determination rules may also be adopted to determine the connection state of the audio/video interface 30 on the display device 00, which is not limited in this embodiment.
The switching circuit 40 may adopt various types of switch chips to implement the functions thereof, for example, the switch chip with the type CBTL06DP213 may be adopted, and of course, chips with other types may also be adopted to implement the functions thereof, which is not limited in this embodiment.
For convenience of description, in this embodiment, the audio/video interface 30 in a connected state on the display device 00 is used as a target interface. The switching circuit 40 may communicate the bridge circuit 20 with the target interface to establish a path between the target interface and the bridge circuit 20. For the audio/video interfaces 30 in the unconnected state on the display device 00, the switching circuit 40 may interrupt the connection between the audio/video interfaces 30 and the bridge circuit 20, and of course, other processing manners may also be adopted, which is not limited in this embodiment. Accordingly, when the video source device 60 sends a video signal to the display device 00, the video signal may sequentially pass through the path between the audio/video interface 30 on the video source device 60 and the target interface on the display device 00 and the path between the target interface and the bridge circuit 20, so that the video signal sent by the video source device 60 may successfully reach the bridge circuit 20.
In this embodiment, the bridge circuit 20 may convert signal formats of various video signals into specified signal formats, for example, may convert a signal format supported by an HDMI interface or a DP interface into a signal format supported by an MIPI interface. The bridge circuit 20 may implement conversion from different signal formats to a specific signal format by operating different driving functions, and certainly, may also implement conversion from different signal formats to a specific signal format by switching the circuit structure thereof, which is not limited in this embodiment.
The control circuit 10 can control the signal conversion mode of the bridge circuit 20. The control circuit 10 may control the bridge circuit 20 to convert the video signal from the target interface from a signal format supported by the target interface to a specified signal format. To this end, the video signal from the video source device 60 can be successfully transmitted through the bridge circuit 20 and transmitted to the display screen 50 in the specified signal format. In this embodiment, the specified signal format may be a signal format supported by the display screen 50.
The control circuit may adopt an MCU (micro controller Unit), an FPGA (Field Programmable Gate Array), or a CPLD (Complex Programmable logic device) to implement a control function, which is not limited in this embodiment.
Accordingly, the video signal sent by the video source device 60 can sequentially pass through the path between the audio/video interface 30 on the video source device 60 and the target interface on the display device 00, the path between the target interface and the bridge circuit 20, and finally reach the display screen 50 together with the signal format supported by the display screen 50. After signal transmission, the video signal from video source device 60 can be successfully displayed on display screen 50 for viewing by the user.
In this embodiment, at least two audio/video interfaces 30 are disposed on the display device 00, and the switching circuit 40 may communicate a target interface in a connection state of the at least two audio/video interfaces 30 with the bridge circuit 20, so that the video signal is successfully transmitted to the bridge circuit 20 through the target interface and a path between the target interface and the bridge circuit 20; furthermore, the control circuit 10 may control the bridge circuit 20 to convert the signal format supported by the target interface into a specified signal format. Therefore, in the embodiment of the present application, the audio/video interface 30 connected to the bridge circuit 20 can be flexibly switched by the switching circuit 40, and the control circuit 10 flexibly controls the bridge circuit 20 to perform signal format conversion on the accessed video signal, so as to obtain the video signal in the specified signal format. This makes the display apparatus 00 compatible with various types of video source apparatuses 60, and can greatly improve the flexibility of the display apparatus 00 when used.
In the above or below embodiments, for the switching circuit 40, it may determine a target interface to be communicated with the bridge circuit 20 according to the connection states of at least two audio/video interfaces 30. The switching circuit 40 may acquire the connection states of the at least two audio/video interfaces 30 in various implementations.
In one implementation, the control circuit 10 is connected with the switching circuit 40; the control circuit 10 is specifically configured to detect a connection state of the at least two audio/video interfaces 30, and when a target interface in the connection state appears in the at least two audio/video interfaces 30, generate a path switching instruction and send the path switching instruction to the switching circuit 40, so as to control the switching circuit 40 to communicate the bridge circuit 20 with the target interface.
In this implementation, the switching circuit 40 may include a switch chip, a GPIO port of the switch chip is connected to the control circuit 10, and a data output port of the switch chip is connected to the bridge circuit 20.
In the present implementation, the connection status of at least two audio-video interfaces 30 is detected by the control circuit 10. After the cable is correctly plugged into the audio/video interface 30 on the display device 00, the video source device 60 will send a connection electrical signal through the cable, which will generate a specified level on the audio/video interface 30 of the display device 00 into which the cable is plugged. The control circuit 10 may determine whether the audiovisual interface 30 is in a connected state by detecting whether a specified level is present on the audiovisual interface 30. For example, when the video source device 60 is a PC, when the cable is properly plugged into the PC and the HDMI interface on the display device 00, a level of 5V will be generated on the HDMI interface on the display device 00, and the control circuit 10 may determine that the HDMI interface is in a connected state when detecting that a level of 5V is present on the HDMI interface. In some application scenarios, because the level recognition capabilities of different control circuits 10 are different, some control circuits 10 may not be able to determine the access state of the audio/video interface directly according to the specified level generated on the audio/video interface on the display device 00, in this case, a level conversion circuit may be added between the audio/video interface 30 and the control circuit 10, and the level conversion circuit may convert the specified circuit generated on the audio/video interface 30 into the level supported by the control circuit 10. As for the above example, the level conversion circuit may convert the 5V level generated on the HDMI interface into 3.3V, and the control circuit 10 may determine that the HDMI interface is in the connection state when detecting that the conversion level corresponding to the HDMI interface is 3.3V. Of course, the conversion level corresponding to the HDMI interface may also be 1.8V or a level that can be supported by other control circuits 10, which is not limited in this embodiment.
The control circuit 10 may send a path switching instruction to the switching circuit 40 according to the determined target interface. In some practical applications, the control circuit 10 may generate the path switching instruction by sending out an electrical signal on a plurality of I/O ports of the control circuit 10, for example, when two I/O ports of the control circuit 10 are used for generating the path switching instruction, the control circuit 10 may generate a 3.3V level on the I/O port No. 1 and a 0V level on the I/O port No. 2 when detecting that the HDMI interface of the display device 00 is in the connected state, and the two I/O ports are respectively connected to two I/O ports in the switching circuit 40, so that the switching circuit 40 may determine that the HDMI interface of the display device 00 is in the connected state according to the levels detected by the two I/O ports thereon. For another example, the control circuit 10 may generate a 0V level on the port 1 and a 3.3V level on the port 2 when detecting that the DP interface of the display device 00 is in the connected state, and the two I/O ports are respectively connected to the two I/O ports in the switching circuit 40, so that the switching circuit 40 may determine that the DP interface of the display device 00 is in the connected state according to the levels detected by the two I/O ports thereon. Of course, the path switching instruction may be in other forms, which is not limited in this embodiment. In addition, in order to ensure that the control circuit 10 and the switching circuit 40 are adapted to each other during the interaction of the electrical signals, a level conversion circuit may be disposed between the control circuit 10 and the switching circuit 40 to convert the electrical signals generated by the control circuit 10 into electrical signals supported by the switching circuit 40.
The switching circuit 40 may determine the target interface according to the path switching instruction, so as to connect the bridge circuit 20 with the target interface.
In another implementation, the switching circuit 40 may be configured to detect a connection state of at least two audio/video interfaces 30, and communicate the bridge circuit 20 with a target interface when the target interface in the connection state appears in the at least two audio/video interfaces 30.
In this implementation, the switching circuit 40 may include a switch chip, a GPIO port of the switch chip is connected to the audio/video interface 30, and a data output port of the switch chip is connected to the bridge circuit 20.
In this implementation manner, the switching circuit 40 may detect the connection states of at least two audio/video interfaces 30, the switching circuit 40 may detect the levels on each audio/video interface 30 through a plurality of GPIO ports, respectively, when a specified level is generated on the audio/video interface 30, an interrupt is generated on the corresponding GPIO port of the switching circuit 40, and the switching circuit 40 may determine the target interface in the connection state accordingly. Of course, the switching circuit 40 may also detect the level on each audio/video interface 30 in other manners, which is not limited in this embodiment.
The switching circuit 40 may determine the target interface according to the detected level on each audio/video interface 30, so as to connect the bridge circuit 20 with the target interface.
It should be noted that, in this embodiment, the switching circuit 40 may also obtain the connection states of the at least two audio/video interfaces 30 by using other manners, which is not limited to the above two implementation manners, and this embodiment does not limit this.
In the above or the following embodiments, the control circuit 10 is specifically configured to detect a connection state of at least two audio/video interfaces 30, determine a signal format supported by a target interface when the target interface in the connection state appears in the at least two audio/video interfaces 30, generate control information based on the signal format supported by the target interface, and send the control information to the bridge circuit 20, so as to control the bridge circuit 20 to convert a video signal from the target interface from the signal format supported by the target interface to a specified signal format.
In this embodiment, the control circuit 10 may determine whether the audio/video interface 30 is in the connected state by detecting whether the specified level exists on the audio/video interface 30. For the detailed description, reference may be made to the foregoing embodiments, which are not repeated herein.
After the target interface is determined, the control circuit 10 may determine the signal format supported by the target interface according to the corresponding relationship between the audio/video interface 30 and the signal format. For example, when the target interface is an HDMI interface, it may be determined that the signal format supported by the target interface is an HDMI format, and when the target interface is a DP interface, it may be determined that the signal format supported by the target interface is a DP format. The correspondence between the audio/video interface 30 and the signal format may be preset during the initialization process of the control circuit 10.
After determining the signal format supported by the target interface, the control circuit 10 may generate control information according to information such as a driver adapted to the signal format supported by the target interface, and send the control information to the bridge circuit 20, so that the bridge circuit 20 may run the driver carried in the control information to convert the video signal from the target interface from the signal format supported by the target interface to the specified signal format. Of course, when a plurality of drivers adapted to different signal formats are stored in the bridge chip, the control circuit 10 may also generate control information according to information such as the signal format supported by the target interface, and send the control information to the bridge circuit 20, and the bridge circuit 20 may start the driver adapted to the signal format according to the signal format carried in the control information. This embodiment is not limited to this.
In this embodiment, the control circuit 10 can flexibly switch the conversion mode of the signal format executed by the bridge circuit 20 according to the access states of the at least two audio/video interfaces 30, so as to ensure that the signal format conversion process of the bridge circuit 20 is adapted to the path switching process of the switching circuit 40, thereby ensuring that the video signal from the target interface can be successfully transmitted to the display screen 50.
In the above or below embodiments, the control circuit 10 may employ various implementations to detect the connection status of at least two audio/video interfaces 30.
In one implementation, the control circuit 10 may perform level detection on at least two audio/video interfaces 30, and when a specified level is detected in a certain audio/video interface 30, the audio/video interface 30 may be determined as a target interface, that is, the audio/video interface 30 may be determined to be in a connection state. In some practical applications, the control circuit 10 may detect the level on each audio/video interface 30 through a plurality of GPIO ports, and when a specified level is generated on the audio/video interface 30, an interrupt is generated on the corresponding GPIO port of the control circuit 10, and the control circuit 10 may determine the target interface in the connection state according to the interrupt.
In this implementation, after the control circuit 10 determines the target interface, the bridge circuit 20 may be controlled to convert the video signal from the target interface from the signal format supported by the target interface to the specified signal format; the switching circuit 40 may also be controlled to perform path switching. The switching circuit 40 may perform the path switching according to the change of the target interface when the target interface determined by the control circuit 10 changes.
In another implementation, the control circuit 10 may preset a default interface and may perform level detection on non-default interfaces, and when a specified level is detected in a certain non-default interface, the non-default interface may be determined as a target interface, that is, the non-default interface may be determined to be in a connected state, and when no specified level is detected in any default interface, the non-default interface may be determined to be in a non-connected state.
In this implementation, the control circuit 10 may be in a default state and a non-default state, respectively, and may return to the default state when the trigger condition of the non-default state disappears. In the default state, the control circuit 10 may control the switching circuit 40 to connect the bridge circuit 20 to the default interface, and the control circuit 10 may control the bridge circuit 20 to convert the video signal from the default interface from the signal format supported by the default interface to the specified signal format by default. The control circuit 10 may trigger entering the non-default state when detecting that there is a target interface in a connected state in the non-default interface, and in the non-default state, the control circuit 10 may control the switching circuit 40 to interrupt the default path and switch to the path between the bridge circuit 20 and the target interface, and may also control the bridge circuit 20 to convert the video signal from the target interface from the signal format supported by the target interface to the specified signal format.
Optionally, in this implementation, when the at least two audio/video interfaces 30 include a first interface and a second interface, the control circuit 10 is specifically configured to perform level detection on the second interface, and determine that the first interface is in a connection state when a specified level is not detected on the second interface, or determine that the second interface is in a connection state when the specified level is detected on the second interface.
In this implementation, the first interface may be used as a default interface, and the switching circuit 40 may default to connect the first interface and the bridge circuit 20, so that the control circuit 10 may determine whether the path switching needs to be performed according to the level detected on the second interface without detecting the connection state of the first interface. In order to match with the default setting of the switching circuit 40, the control circuit 10 may default to control the bridge circuit 20 to convert the video signal from the first interface from the signal format supported by the first interface to the specified format when the second interface is in the non-connection state, and switch the signal conversion mode of the bridge circuit 20 to control the bridge circuit 20 to convert the video signal from the second interface from the signal format supported by the second interface to the specified format when the second interface is in the connection state.
In addition, in this implementation, the first interface is a DP interface, and the second interface is an HDMI interface; or, the first interface is an HDMI interface, and the second interface is a DP interface.
In this implementation, the first interface is used as a default interface, and the path between the first interface and the bridge circuit 20 is used as a default path, and the switching circuit 40 may determine the connection state of the second interface by detecting a level on the second interface, so as to determine whether to switch from the default path to the path between the second interface and the bridge circuit 20. Therefore, the control circuit 10 can flexibly control the switching circuit 40 to perform channel switching to transmit video signals with different signal formats.
In the above or below embodiments, as shown in fig. 1b, when the display device 00 is a virtual reality device or an augmented reality device, the display device 00 may further include a sensor assembly 70 and a data transmission interface 80. In fig. 1b, the data transmission interface 80 is distinct from the at least two audio video interfaces 30; the sensor assembly 70 is connected with the control circuit 10 and is used for sending the acquired sensor data to the control circuit 10; the control circuit 10 is further configured to generate attitude information of the display device 00 according to the sensor data, and send the attitude information to the video source device 60 through the data transmission interface 80, so that the video source device 60 generates a video signal according to the attitude information and outputs the video signal to the target interface.
In this embodiment, after the display device 00 is powered on, the initialization work related to the hardware platform may be performed first, including the initialization of the control circuit 10, the initialization of the sensor assembly 70, and the initialization of the data transmission interface 80; then, the display screen 50 is powered on according to the power-on sequence required in the specification of the display screen 50, and a flag bit for identifying the power-on of the display screen 50 is generated so as to prevent the misoperation of repeated initialization; then, the bridge circuit 20 may be initialized according to the access states of the at least two audio/video interfaces 30; finally, the sensor data acquisition process may be entered.
The control circuit 10 may analyze the collected sensor data, generate posture information of the display device 00, and transmit the posture information to the video source device 60 through the data transmission interface 80. The Sensor assembly 70 may employ a 9-Axis Sensor (9-Axis Sensor), the data transmission interface 80 may be a USB interface, which is a different physical interface from the audio/video interface 30 mentioned in the foregoing embodiments, and may be used for transmitting voice signals and various command data, and so on. In addition, the display device 00 may further include a 6-DOF Camera (6-DOF Camera)90, a perspective Camera (See Through Camera)100, an audio coder-decoder (CODEC)101, and a USB HUB (USB HUB)102, which may also communicate with the video source device 60 Through the data transmission interface 80, which is not limited in this embodiment.
Fig. 2 is a schematic structural diagram of an interface circuit according to another embodiment of the present application, as shown in fig. 2, the interface circuit includes: the device comprises a control circuit 21, a bridge circuit 22, at least two audio/video interfaces 23 and a switching circuit 24 connected with the at least two audio/video interfaces 23;
the switching circuit 24 is connected to the bridge circuit 22, and is configured to communicate the bridge circuit 22 with a target interface when the target interface in a connected state appears in the at least two audio/video interfaces 23;
the control circuit 21 is connected to the bridge circuit 22 for controlling the bridge circuit 22 to convert the video signal from the target interface from the signal format supported by the target interface to a specified signal format.
In this embodiment, at least two audio/video interfaces 23 are arranged in the interface circuit, and the switching circuit 24 can communicate a target interface in a connection state of the at least two audio/video interfaces 23 with the bridge circuit 22, so that a video signal is successfully transmitted to the bridge circuit 22 through the target interface and a path between the target interface and the bridge circuit 22; furthermore, the control circuit 21 may control the bridge circuit 22 to convert the signal format supported by the target interface into a specified signal format, so that the video signal is successfully presented. Therefore, in the embodiment of the present application, the audio/video interface 23 communicated with the bridge circuit 22 can be flexibly switched by the switching circuit 24, and the control circuit 21 flexibly controls the bridge circuit 22 to perform signal format conversion on the accessed video signal, so as to obtain the video signal in the specified signal format. This makes the interface circuit compatible with various types of video source equipment, and can greatly improve the flexibility of the interface circuit when in use.
In an alternative embodiment, the control circuit 21 is connected to the switching circuit 24;
the control circuit 21 is specifically configured to detect a connection state of the at least two audio/video interfaces 23, and when a target interface in the connection state appears in the at least two audio/video interfaces 23, generate a path switching instruction and send the path switching instruction to the switching circuit 24, so as to control the switching circuit 24 to communicate the bridge circuit 22 with the target interface.
In an optional embodiment, the control circuit 21 is specifically configured to detect a connection state of at least two audio/video interfaces 23, determine a signal format supported by a target interface when the target interface in the connection state appears in the at least two audio/video interfaces 23, generate control information based on the signal format supported by the target interface, and send the control information to the bridge circuit 22, so as to control the bridge circuit 22 to convert a video signal from the target interface from the signal format supported by the target interface to a specified signal format.
In an alternative embodiment, the at least two audio/video interfaces 23 comprise a first interface and a second interface;
the control circuit 21 is specifically configured to perform level detection on the second interface, and determine that the first interface is in a connection state when a specified level is not detected on the second interface, or determine that the second interface is in a connection state when the specified level is detected on the second interface.
In an optional embodiment, the first interface is a DP interface, and the second interface is an HDMI interface; or,
the first interface is an HDMI interface, and the second interface is a DP interface.
Fig. 3 is a flowchart illustrating a display method according to another embodiment of the present application. The display method can be applied to a display device, the display device comprises at least two audio/video interfaces, a switching circuit connected with the at least two audio/video interfaces, and a bridge circuit connected with the switching circuit, as shown in fig. 3, the display method comprises:
300. when a target interface in a connection state appears in at least two audio/video interfaces, the switching circuit communicates the bridge circuit with the target interface so as to receive a video signal from video source equipment through the target interface; and
301. and the control bridge circuit converts the video signal from the target interface from the signal format supported by the target interface into the signal format supported by the display screen of the display device and outputs the signal format to the display screen for displaying.
In this embodiment, at least two audio/video interfaces are arranged on the display device, and the switching circuit can communicate a target interface in a connection state of the at least two audio/video interfaces with the bridge circuit, so that a video signal is successfully transmitted to the bridge circuit through the target interface and a path between the target interface and the bridge circuit; moreover, the control circuit can control the bridge circuit to convert the signal format supported by the target interface into a specified signal format so as to successfully display the video signal. Therefore, in the embodiment of the application, the audio/video interface communicated with the bridge circuit can be flexibly switched through the switching circuit, and the bridge circuit is flexibly controlled by the control circuit to perform signal format conversion on the accessed video signal, so as to obtain the video signal in the specified signal format. This makes the display device compatible with various types of video source devices, and can greatly improve the flexibility of the display device when in use.
In an alternative embodiment, the control circuit is connected with the switching circuit; the method comprises the following steps:
and detecting the connection state of at least two audio and video interfaces, and generating a channel switching instruction and sending the channel switching instruction to a switching circuit when a target interface in the connection state appears in the at least two audio and video interfaces so as to control the switching circuit to communicate the bridge circuit with the target interface.
In an alternative embodiment, the method comprises:
the method comprises the steps of detecting the connection state of at least two audio and video interfaces, determining a signal format supported by a target interface when the target interface in the connection state appears in the at least two audio and video interfaces, generating control information based on the signal format supported by the target interface and sending the control information to a bridge circuit so as to control the bridge circuit to convert a video signal from the target interface from the signal format supported by the target interface into a specified signal format.
In an optional embodiment, the at least two audio/video interfaces comprise a first interface and a second interface; the method comprises the following steps:
and detecting the level of the second interface, and determining that the first interface is in a connection state when the specified level is not detected on the second interface, or determining that the second interface is in a connection state when the specified level is detected on the second interface.
In an optional embodiment, the first interface is a DP interface, and the second interface is an HDMI interface; or,
the first interface is an HDMI interface, and the second interface is a DP interface.
Accordingly, the present application further provides a computer readable storage medium storing a computer program, where the computer program can implement the steps that can be executed by the internal mixer management system in the foregoing method embodiments when executed.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. An interface circuit, comprising: the audio/video switching device comprises a control circuit, a bridge circuit, at least two audio/video interfaces and a switching circuit connected with the at least two audio/video interfaces;
the switching circuit is connected with the bridge circuit and is used for communicating the bridge circuit with a target interface when the target interface in a connection state appears in the at least two audio and video interfaces;
the control circuit is connected with the bridge circuit and used for controlling the bridge circuit to convert the video signal from the target interface from the signal format supported by the target interface into a specified signal format.
2. The interface circuit of claim 1, wherein the control circuit is coupled to the switching circuit;
the control circuit is specifically configured to detect a connection state of the at least two audio/video interfaces, and when a target interface in the connection state appears in the at least two audio/video interfaces, generate a path switching instruction and send the path switching instruction to the switching circuit, so as to control the switching circuit to communicate the bridge circuit with the target interface.
3. The interface circuit according to claim 1, wherein the control circuit is specifically configured to detect a connection state of the at least two audio/video interfaces, determine a signal format supported by a target interface when the target interface in the connection state appears in the at least two audio/video interfaces, generate control information based on the signal format supported by the target interface, and send the control information to the bridge circuit, so as to control the bridge circuit to convert a video signal from the target interface from the signal format supported by the target interface to a specified signal format.
4. The interface circuit according to any one of claims 1 to 3, wherein the at least two audio-video interfaces comprise a first interface and a second interface;
the control circuit is specifically configured to perform level detection on the second interface, and determine that the first interface is in a connection state when a specified level is not detected on the second interface, or determine that the second interface is in a connection state when a specified level is detected on the second interface.
5. The interface circuit of claim 4, wherein the first interface is a DP interface and the second interface is an HDMI interface; or,
the first interface is an HDMI interface, and the second interface is a DP interface.
6. The interface circuit according to claim 1, wherein the switching circuit comprises a switch chip, a general purpose input/output (GPIO) port of the switch chip is connected with the control circuit, and a data output port of the switch chip is connected with the bridge circuit.
7. A display device, comprising: the device comprises a display screen, a control circuit, a bridge circuit, at least two audio and video interfaces and a switching circuit connected with the at least two audio and video interfaces; the switching circuit is connected with the bridge circuit and is used for communicating the bridge circuit with a target interface when the target interface in a connection state appears in the at least two audio and video interfaces; the control circuit is connected with the bridge circuit and is used for controlling the bridge circuit to convert the video signal from the target interface from the signal format supported by the target interface into the signal format supported by the display screen;
the display screen is used for displaying the video signal from the target interface after the format conversion of the bridge circuit.
8. The display device according to claim 7, further comprising: the data transmission interface is different from the at least two audio and video interfaces;
the sensor assembly is connected with the control circuit and used for sending the acquired sensor data to the control circuit;
the control circuit is further used for generating attitude information of the display device according to the sensor data and sending the attitude information to video source equipment through the data transmission interface so that the video source equipment can generate the video signal according to the attitude information and output the video signal to the target interface.
9. The display device according to claim 7, wherein the switching circuit comprises a switch chip, a GPIO port of the switch chip is connected with the control circuit, and a data output port of the switch chip is connected with the bridge circuit.
10. The display device of claim 7, wherein the display device is a virtual reality device or an augmented reality device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821686339.1U CN209015704U (en) | 2018-10-17 | 2018-10-17 | A kind of interface circuit and display equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821686339.1U CN209015704U (en) | 2018-10-17 | 2018-10-17 | A kind of interface circuit and display equipment |
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| CN209015704U true CN209015704U (en) | 2019-06-21 |
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| CN201821686339.1U Expired - Fee Related CN209015704U (en) | 2018-10-17 | 2018-10-17 | A kind of interface circuit and display equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109473081A (en) * | 2018-10-17 | 2019-03-15 | 歌尔科技有限公司 | A kind of interface circuit, display methods and display equipment |
| CN116016823A (en) * | 2022-12-12 | 2023-04-25 | 昆易电子科技(上海)有限公司 | Video injection device and system |
-
2018
- 2018-10-17 CN CN201821686339.1U patent/CN209015704U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109473081A (en) * | 2018-10-17 | 2019-03-15 | 歌尔科技有限公司 | A kind of interface circuit, display methods and display equipment |
| CN109473081B (en) * | 2018-10-17 | 2023-11-21 | 歌尔科技有限公司 | Interface circuit, display method and display device |
| CN116016823A (en) * | 2022-12-12 | 2023-04-25 | 昆易电子科技(上海)有限公司 | Video injection device and system |
| CN116016823B (en) * | 2022-12-12 | 2024-04-12 | 昆易电子科技(上海)有限公司 | Video injection device and system |
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