CN121151627A - Method for actively switching source end resolution of bridge chip and related product - Google Patents
Method for actively switching source end resolution of bridge chip and related productInfo
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- CN121151627A CN121151627A CN202511685494.6A CN202511685494A CN121151627A CN 121151627 A CN121151627 A CN 121151627A CN 202511685494 A CN202511685494 A CN 202511685494A CN 121151627 A CN121151627 A CN 121151627A
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- source end
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- resolution
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Abstract
The application discloses a method for actively switching source end resolution of a bridge chip and a related product, wherein the method comprises the steps that the bridge chip determines target extended display identification data from built-in multiple extended display identification data based on a received external control instruction, and each extended display identification data in the multiple extended display identification data corresponds to different resolutions; and switching the output resolution of the source terminal based on the target expansion display identification data. In this way, multiple kinds of expansion display identification data are built in the bridge chip, the target expansion display identification data are selected based on the external control instruction, and the source end can automatically switch the output resolution according to the target expansion display identification data by combining reconnection operation of the communication pins, so that the operation convenience and the use experience of a user are effectively improved.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method for actively switching source resolution of a bridge chip and a related product.
Background
The display terminal typically outputs a video signal through a Source terminal (Source terminal), the display effect of which depends on resolution and refresh rate information provided by the Source terminal. For example, when VR glasses, intelligent projection or other display devices are used, the source end needs to select an adaptive resolution through an operation interface to ensure definition, frame rate and immersion experience of the display effect of the terminal.
In the prior art, when VR glasses, smart projection or other display terminals are used, manual setup at the source is often required if switching of display resolution or refresh rate is required. However, for wearable devices, especially VR glasses, it is difficult for the user to operate the source at any time during use. This results in poor user experience, cumbersome and inconvenient operation, and inability to meet the need for rapidly switching display modes.
Disclosure of Invention
The embodiment of the application provides a method for actively switching source end resolution of a bridge chip and a related product, wherein various expansion display identification data are built in the bridge chip, and target expansion display identification data are selected based on an external control instruction, so that the source end can automatically switch output resolution according to the target expansion display identification data, and the use experience of a user is effectively improved.
In a first aspect, an embodiment of the present application provides a method for actively switching source resolution of a bridge chip, where the method includes:
the bridge chip determines target extended display identification data from a plurality of built-in extended display identification data based on a received external control instruction, wherein each extended display identification data in the plurality of extended display identification data corresponds to different resolutions;
reconnecting the communication pins of the bridge chip and the source end based on the external control instruction;
And switching the output resolution of the source terminal based on the target extension display identification data.
In an implementation manner, before reconnecting the communication pin of the bridge chip and the source terminal based on the external control instruction, the method further includes:
and under the condition that the external control instruction is received, disconnecting the communication pin of the bridge chip and the source end.
In an implementation manner, in a case that a first interface in the bridge chip establishes a connection with the source end, in a case that the external control instruction is received, disconnecting a connection between the bridge chip and a communication pin of the source end, including:
And under the condition that the external control instruction is received, disconnecting a configuration channel pin of the first interface, wherein the configuration channel pin is used for detecting the connection state of the bridge chip and the source end and negotiating a communication mode in the first interface.
In an implementation manner, in a case that the second interface in the bridge chip establishes a connection with the source end, in a case that the external control instruction is received, the disconnection of the communication pin between the bridge chip and the source end includes:
And under the condition that the external control instruction is received, setting a hot plug detection pin of the second interface to be low, wherein the hot plug detection pin is used for indicating the connection state of the bridge chip and the source end in the second interface.
An implementation manner, the reconnecting the communication pin of the bridge chip and the source terminal based on the external control instruction includes:
And reconnecting the configuration channel pin of the first interface in the bridge chip with the source terminal based on the external control instruction.
An implementation manner, the reconnecting the communication pin of the bridge chip and the source terminal based on the external control instruction includes:
And pulling up the hot plug detection pin of the second interface in the bridge chip based on the external control instruction.
An implementation manner, the switching the output resolution of the source end based on the target extended display identification data includes:
and the bridge chip transmits the target expansion display identification data to the source end through an auxiliary channel so that the source end switches the output resolution based on the target expansion display identification data.
In a second aspect, an embodiment of the present application provides a device for actively switching a source resolution of a bridge chip, including:
The device comprises an instruction receiving module, a display control module and a display control module, wherein the instruction receiving module is used for determining target extended display identification data from a plurality of built-in extended display identification data based on a received external control instruction, and each extended display identification data in the plurality of extended display identification data corresponds to different resolutions;
the device reconnection module is used for reconnecting the communication pins of the bridge chip and the source end based on the external control instruction;
And the resolution output module is used for switching the output resolution of the source terminal based on the target expansion display identification data.
In a third aspect, an embodiment of the present application provides an electronic device, including a processor, a memory, and a system bus;
the processor and the memory are connected through the system bus;
the memory is configured to store a program, the program including instructions that, when executed by the processor, cause the processor to perform any implementation step of the method for actively switching source resolution of the bridge chip.
In a fourth aspect, an embodiment of the present application provides a computer readable storage medium, where the computer readable storage medium is configured to store a computer program, where the computer program when executed by a terminal device implements any implementation step of a method for executing the above method for actively switching source resolution of a bridge chip.
From the above technical solutions, the embodiment of the present application has the following advantages:
In the embodiment of the application, firstly, a bridge chip determines target extended display identification data from built-in various extended display identification data based on a received external control instruction, wherein each extended display identification data in the various extended display identification data corresponds to different resolutions, secondly, the bridge chip is reconnected with a communication pin of a source terminal based on the external control instruction, and finally, the output resolution of the source terminal is switched based on the target extended display identification data.
Therefore, the source end can automatically switch the output resolution according to the target extension display identification data by arranging various extension display identification data in the bridge chip, selecting the target extension display identification data based on an external control instruction and combining reconnection operation of the communication pin. Therefore, the scheme realizes automatic adjustment of output resolution by actively triggering resolution switching of the source end through the bridge chip, thereby remarkably improving operation convenience and effectively avoiding the condition that a user needs to manually set the resolution at the source end in the prior art. Meanwhile, the scheme is particularly suitable for wearing type display application scenes such as VR glasses and intelligent projection, can realize rapid and flexible switching of display resolution, and further improves the use experience of users.
Drawings
Fig. 1 is a flowchart of a method for actively switching source resolution of a bridge chip according to an embodiment of the present application;
FIG. 2 is a schematic diagram of an overall frame of a bridge chip for actively switching source resolution according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a device for actively switching source resolution of a bridge chip according to an embodiment of the present application.
Detailed Description
Before starting the embodiment of the present application, in order to facilitate understanding of the technical solution of the present application, the technical terms related to the embodiment of the present application will be described in detail first.
Source refers to a device for transmitting an input signal, and is typically a signal output terminal of a computer, a tablet computer, a mobile phone, or the like.
A Display Port (DP), a digital video/audio interface standard defined by the video electronics standards association (Video Electronics Standards Association, VESA), is mainly used to connect a video source (e.g., a computer or a video card) with a Display device (e.g., a Display or a television). The core design concept is to provide a high bandwidth, scalable and universal interface suitable for internal and external connections, instead of traditional analog/digital external Video interfaces such as Video graphics array (Video GRAPHICS ARRAY, VGA), digital Video interface (Digital Visual Interface, DVI) and Low Voltage differential signaling (Low Voltage DIFFERENTIAL SIGNALING, LVDS).
The auxiliary channel (Auxiliary Channel, AUX) is a bi-directional, half-duplex, low bandwidth communication channel in the DP protocol for the transmission of management and control information between devices. The channel is not used for transmitting main video or audio data streams, but is used for realizing the interaction of control signals such as link management, state detection, extended display identification data and the like between a source end and a display end.
Extended display identification data (Extended Display Identification Data, EDID), which is a standardized data structure formulated by VESA, is generated by a display device (e.g., a display or projector, etc.) and transmitted to a video source device (e.g., a computer or graphics card, etc.) for describing display capability parameters such as resolution, refresh rate, and color characteristics of the display device.
The Hot Plug Detect (HPD) is a signal pin in the DP interface for indicating the physical connection state between the source and display. When the display device is plugged in or out, the level of the HPD signal may change, thereby informing the source to reestablish or disconnect the communication connection.
The universal serial bus Type-C interface (Universal Serial Bus Type-C, USB Type-C) is a universal serial bus interface standard established by the USB implementer forum. The interface not only supports high-speed data transmission and power supply, but also can realize direct native transmission of DP signals through a working Mode called a display port substitution Mode (DisplayPort Alternate Mode, DP Alt Mode), so that the Type-C interface can simultaneously bear multiple functions such as data, video and power transmission.
Configuration channel pins (Configuration Channel, CC), which are key control pins in the usb Type-C interface, are mainly used to manage connection establishment, plug direction detection, power role allocation, data role allocation, and mode switching among devices. By configuring the channel pins, automatic identification and communication negotiation of the Type-C interface among different devices can be realized, so that the connection accuracy and the flexibility of system functions are ensured.
The transmit side (TX) refers to a circuit or channel used to transmit high-speed data signals.
A Receiver (RX) refers to a circuit or channel for receiving high-speed data signals, typically found in a digital communication interface.
The mobile industry processor interface (Mobile Industry Processor Interface, MIPI) is an interface standard established by the mobile industry processor interface alliance for the transmission of video data within mobile communications and related electronic devices. The existing MIPI interface types mainly comprise a three-phase coding physical layer (C-PHY), a differential signal physical layer (D-PHY), a multi-rate physical layer (M-PHY) and the like, and different types of physical layer interfaces can be flexibly selected in terms of bandwidth, power consumption and signal integrity according to application scenes.
As described above, in the prior art, when VR glasses, smart projection or other display terminals are used, if the display resolution or refresh rate needs to be switched, a user is usually required to manually set at the source end. However, for wearable devices, particularly VR glasses, a user cannot conveniently take down to perform a source operation after wearing the device, so that it is difficult to complete switching of the display modes in time. The method not only makes the operation process complicated and inconvenient to use, but also causes poor overall use experience, and cannot meet the requirement of rapidly and flexibly switching the display mode.
Based on this, in order to solve the above-mentioned problems, the embodiments of the present application provide a method for actively switching the source resolution of a bridge chip and related products. The method comprises the steps of firstly determining target extended display identification data from built-in multiple extended display identification data based on a received external control instruction by a bridge chip, wherein each extended display identification data in the multiple extended display identification data corresponds to different resolutions, then reconnecting a communication pin of the bridge chip and a source terminal based on the external control instruction, and finally switching the output resolution of the source terminal based on the target extended display identification data.
Therefore, the source end can automatically switch the output resolution according to the target extension display identification data by arranging various extension display identification data in the bridge chip, selecting the target extension display identification data based on an external control instruction and combining reconnection operation of the communication pin. Therefore, the scheme realizes automatic adjustment of output resolution by actively triggering resolution switching of the source end through the bridge chip, thereby remarkably improving operation convenience and effectively avoiding the condition that a user needs to manually set the resolution at the source end in the prior art. Meanwhile, the scheme is particularly suitable for wearing type display application scenes such as VR glasses and intelligent projection, can realize rapid and flexible switching of display resolution, and further improves the use experience of users.
It should be noted that, the embodiment of the present application may not limit the execution body of the method for actively switching the source resolution of the bridge chip. For example, the method for actively switching the source resolution of the bridge chip in the embodiment of the application can be applied to information processing equipment such as a server or terminal equipment. The server may be an independent server, a cluster server or a cloud server. The terminal device may be an electronic device such as a smart phone, a computer, a Personal digital assistant (Personal DIGITAL ASSISTANT, PDA), a tablet computer, etc.
In order to make the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. 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.
Fig. 1 is a flowchart of a method for actively switching source resolution of a bridge chip according to an embodiment of the present application. As shown in connection with fig. 1, steps S101-S103 may be included.
S101, the bridge chip determines target extended display identification data from the built-in multiple extended display identification data based on the received external control instruction, wherein each extended display identification data in the multiple extended display identification data corresponds to different resolutions.
In the embodiment of the application, after the source end and the receiving end establish the DP connection, the source end outputs the initial video data stream according to the default resolution. At this time, the bridge chip performs format conversion on the received video data stream, generates a corresponding MIPI signal, and outputs the MIPI signal to the back-end display device for display, where the back-end display device may be VR glasses, an intelligent projection device, or other terminals with display functions.
Then, the bridge chip can determine the target extended display identification data from the built-in various extended display identification data based on the received external control instruction. Specifically, under the use scene of the terminal, the external control system sends an external control instruction through a GPIO window or an IIC interface provided by the bridge chip, and the bridge chip determines target extended display identification data from the built-in various extended display identification data according to the received external control instruction.
It should be noted that, each of the plurality of kinds of extended display identification data built in the bridge chip corresponds to a different resolution, and the number thereof can be up to 10. For example 1080P, 2K, 4K, 8K, or the like, so that when an external control instruction is received, a target resolution corresponding to the target extended display identification data can be flexibly selected and switched.
S102, reconnecting the communication pins of the bridging chip and the source end based on an external control instruction.
In the embodiment of the application, before the communication pins of the bridge chip and the source end are reconnected based on an external control instruction, the connection between the bridge chip and the communication pins of the source end is disconnected firstly, so that the source end is disconnected from the previously established connection, and conditions are created for switching the target extended display identification data.
Specifically, when the bridge chip establishes connection with the source end through the first interface, after receiving an external control instruction, the bridge chip disconnects a configuration channel pin of the first interface, where the configuration channel pin is a pin used for detecting a connection state between the bridge chip and the source end and negotiating a communication mode in the first interface.
When the bridge chip establishes connection with the source end through the second interface, the bridge chip pulls down the hot plug detection pin of the second interface after receiving an external control instruction. The hot plug detection pin is used for indicating the connection state between the bridge chip and the source end.
After the bridge chip is disconnected from the source communication pin, the bridge chip can reestablish communication connection with the source based on an external control instruction. Specifically, according to the external control instruction, the first interface configuration channel pin of the bridge chip is reconnected to the source end, or the second interface hot plug detection pin of the bridge chip is pulled high.
It should be noted that, in the embodiment of the present application, the first interface may be a universal serial bus Type-C interface, and the corresponding configuration channel pin is a CC pin. The second interface may be a DP interface, and the corresponding hot plug detection pin is an HPD pin.
S103, switching the output resolution of the source terminal based on the target extension display identification data.
In the embodiment of the application, after the bridging chip is connected with the source end again, the bridging chip and the source end carry out DP handshake again, and the target extended display identification data is transmitted to the source end through the auxiliary channel, so that the source end switches the output resolution based on the target extended display identification data.
Therefore, the embodiment of the application can actively switch the output resolution of the source end at any time by repeatedly executing the operation steps of disconnecting and reconnecting the communication pins of the bridging chip and the source end, carrying out DP handshake, transmitting the target extension display identification data through the auxiliary channel, and the like, thereby realizing flexible control and dynamic adjustment of the display resolution.
Based on the above-mentioned related content of step S101 to step S104, in the embodiment of the present application, first, the bridge chip determines, based on the received external control instruction, target extended display identification data from the built-in multiple extended display identification data, where each extended display identification data in the multiple extended display identification data corresponds to a different resolution, then, based on the external control instruction, reconnects the communication pin of the bridge chip and the source terminal, and finally, based on the target extended display identification data, switches the output resolution of the source terminal. Therefore, the source end can automatically switch the output resolution according to the target extension display identification data by arranging various extension display identification data in the bridge chip, selecting the target extension display identification data based on an external control instruction and combining reconnection operation of the communication pin. Therefore, the scheme realizes automatic adjustment of output resolution by actively triggering resolution switching of the source end through the bridge chip, thereby remarkably improving operation convenience and effectively avoiding the condition that a user needs to manually set the resolution at the source end in the prior art. Meanwhile, the scheme is particularly suitable for wearing type display application scenes such as VR glasses and intelligent projection, can realize rapid and flexible switching of display resolution, and further improves the use experience of users.
Further, for easy understanding, the embodiment of the application may also be combined with the accompanying drawings to describe a method for actively switching the source resolution of the bridge chip from the perspective of the whole framework.
Fig. 2 is a schematic diagram of an overall framework of an active source resolution switching of a bridge chip according to an embodiment of the present application. With reference to fig. 2, the bridge chip establishes a screen-throwing connection with the Source end through a DP or Type-C interface, and can realize dynamic switching of Source resolution and display mode by disconnecting and reconnecting the HPD (i.e., the hot plug detection pin in the above embodiment) or the CC (i.e., the configuration channel pin in the above embodiment).
Specifically, multiple resolutions (such as 1080P, 4K or 8K) and 2D and 3D display modes are preset in the bridge chip. When the bridge chip receives the GPIO control or IIC interaction signal from the external control system, the corresponding resolution and display mode can be selected according to the signal, so that the source end outputs the video data stream according to the resolution and display mode designated by the bridge chip. It should be noted that, the display device can directly control the GPIO level through the key to realize simple resolution switching, and also can integrate the resolution switching module on the display device through the MCU, so that the user can flexibly adjust the resolution output by the source terminal on the display device.
In summary, the embodiment of the application uses the bridge chip as a core, and realizes flexible control and dynamic switching of the source output resolution and display mode by combining with external GPIO or IIC control signals through multiple resolutions and display modes preset inside.
Further, fig. 3 is a schematic structural diagram of a device for actively switching source resolution of a bridge chip according to an embodiment of the present application. Referring to fig. 3, an apparatus 300 for actively switching source resolution of a bridge chip according to an embodiment of the present application may include:
An instruction receiving module 301, configured to determine, by using a bridge chip, target extended display identification data from a plurality of built-in extended display identification data based on a received external control instruction, where each extended display identification data in the plurality of extended display identification data corresponds to a different resolution;
The device reconnection module 302 is configured to reconnect the communication pin of the bridge chip and the source terminal based on the external control instruction;
and the resolution output module 303 is configured to switch the output resolution of the source end based on the target extended display identification data.
Optionally, before reconnecting the communication pins of the bridge chip and the source terminal based on the external control instruction, the apparatus 300 for actively switching the resolution of the source terminal by the bridge chip may include:
And the equipment disconnection module is used for disconnecting the communication pins of the bridge chip and the source end under the condition that the external control instruction is received.
Optionally, in the case that the first interface in the bridge chip establishes a connection with the source end, the device disconnection module is specifically configured to:
And under the condition that the external control instruction is received, disconnecting a configuration channel pin of the first interface, wherein the configuration channel pin is used for detecting the connection state of the bridge chip and the source end and negotiating a communication mode in the first interface.
Optionally, in a case that the second interface in the bridge chip establishes a connection with the source end, the device disconnection module is specifically configured to:
And under the condition that the external control instruction is received, setting a hot plug detection pin of the second interface to be low, wherein the hot plug detection pin is used for indicating the connection state of the bridge chip and the source end in the second interface.
Optionally, the device reconnection module 302 is specifically configured to:
And reconnecting the configuration channel pin of the first interface in the bridge chip with the source terminal based on the external control instruction.
Optionally, the device reconnection module 302 is specifically configured to:
And pulling up the hot plug detection pin of the second interface in the bridge chip based on the external control instruction.
Optionally, the resolution output module 303 is specifically configured to:
and the bridge chip transmits the target expansion display identification data to the source end through an auxiliary channel so that the source end switches the output resolution based on the target expansion display identification data.
Further, the embodiment of the application also provides electronic equipment, which comprises a processor, a memory and a system bus;
the processor and the memory are connected through the system bus;
The memory is configured to store one or more programs, the one or more programs comprising instructions, which when executed by the processor, cause the processor to perform any implementation step of the method for actively switching source resolution of the bridge chip described above.
Further, the embodiment of the application also provides a computer readable storage medium, which is used for storing a computer program, and the computer program is executed by a terminal device to realize any implementation step of the method for actively switching the source resolution of the bridge chip.
From the above description of embodiments, it will be apparent to those skilled in the art that all or part of the steps of the above described example methods may be implemented in software plus necessary general purpose hardware platforms. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network communication device such as a media gateway, etc.) to execute the method described in the embodiments or some parts of the embodiments of the present application. It should be noted that, in the present description, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different manner from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
For the system disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
It is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
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| CN115334340A (en) * | 2022-08-05 | 2022-11-11 | 海信视像科技股份有限公司 | Display device and extended display identification data setting method |
| CN120216423A (en) * | 2025-01-24 | 2025-06-27 | 深圳市掌锐电子有限公司 | Display method, system on chip and vehicle-mounted platform based on MTK vehicle-mounted platform |
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| CN103489426A (en) * | 2013-09-06 | 2014-01-01 | 天津三星电子有限公司 | Method for switching displayer resolution |
| CN104102469A (en) * | 2014-07-30 | 2014-10-15 | 龙迅半导体科技(合肥)有限公司 | Combining method and combining device for EDID of multi-path displays |
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