CN113542827B

CN113542827B - Multi-channel data transmission method and display device

Info

Publication number: CN113542827B
Application number: CN202110789373.1A
Authority: CN
Inventors: 张大伟
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2021-07-13
Filing date: 2021-07-13
Publication date: 2022-08-26
Anticipated expiration: 2041-07-13
Also published as: CN113542827A

Abstract

When external equipment is accessed through a specified HDMI (high-definition multimedia interface), if a system setting parameter represents that a specified function switch is started, functional data for realizing a specified function is reserved in an EDID (extended display identification data) file; and if the system setting parameter represents that the appointed function switch is closed, deleting the functional data used for realizing the appointed function in the EDID file to generate a new EDID file. Therefore, the method and the display device provide an EDID file for the HDMI interface with the same function. The EDID file can be changed in real time by methods of reserving, deleting, writing, modifying and the like based on the setting of a user, and an EDID file is regenerated to carry out data transmission. Therefore, the trouble of maintaining a plurality of pieces of EDID can be avoided, the EDID called by any HDMI interface for connecting external equipment can be ensured to support the transmission of data with appointed functions, and the multi-channel data transmission efficiency is high.

Description

Multi-channel data transmission method and display device

Technical Field

The application relates to the technical field of internet data transmission, in particular to a multichannel data transmission method and display equipment.

Background

Along with the rapid development of display equipment, the functions of the display equipment are more and more abundant, and the performance of the display equipment is more and more powerful, and at present, the display equipment comprises an intelligent television, a mobile phone, a refrigerator, other products with an intelligent display screen and the like. In order to improve the functions of the display device, a plurality of HDMI interfaces are configured in the display device. Each HDMI interface is generally connected to an external device through a corresponding Extended Display Identification Data (EDID), so as to form a multi-channel Data transmission path, so as to present the functional content provided by the external device in the Display device.

The EDID is stored with data of different functions supported by the display device, and as the display device develops more and more supported functions and shows more differences, the EDID of each HDMI interface has multiple versions such as 1.4, 2.0 and 2.1. EDIDs of different versions can realize data transmission of different functions, so that when data transmission of a certain function is realized, the situation that the used EDID version does not support transmission of data required for realizing the certain function easily occurs, and the data transmission efficiency is influenced.

Disclosure of Invention

The application provides a multi-channel data transmission method and display equipment, and aims to solve the problem that the conventional EDID influences data transmission efficiency.

In a first aspect, the present application provides a display device comprising:

a display configured to present a user interface;

a controller connected with the display, the controller configured to:

responding to an access request generated when external equipment is accessed through a specified HDMI, and acquiring system setting parameters and an EDID file corresponding to the specified HDMI, wherein the external equipment is used for providing contents required when a local terminal realizes specified functions, and the EDID file is a common file generated based on function data of the same version corresponding to each HDMI for realizing the same function;

when the designated function switch of the system setting parameter representation home terminal is in an open state, reserving functional data for realizing a designated function in the EDID file, and performing data transmission with external equipment based on the EDID file;

and when the designated function switch of the system setting parameter representation home terminal is in a closed state, deleting the functional data used for realizing the designated function in the EDID file, generating a new EDID file, and performing data transmission with external equipment based on the new EDID file.

In some embodiments of the present application, the controller is further configured to:

before the external equipment is accessed, acquiring function data of different versions of different functions realized by each HDMI interface;

generating EDID files based on the function data of the same version corresponding to each HDMI interface for realizing the same function, wherein one version corresponds to one EDID file, and one EDID file is used for realizing the data transmission of the function supported by at least one HDMI interface;

storing each EDID file in an external storage space;

and when the equipment runs, loading the EDID files of the versions in the external storage space into the internal storage space, wherein each EDID file in the internal storage space is used for providing a corresponding EDID file when the external equipment is accessed.

when the external equipment is accessed through a new HDMI, responding to a new access request generated when the external equipment is accessed through the new HDMI, and acquiring the functional characteristics of the new HDMI, wherein the functional characteristics are used for representing the functions realized by the corresponding HDMI;

and if the functional characteristics of the new HDMI interface are the same as those of the appointed HDMI interface, modifying the channel data in the EDID file corresponding to the appointed HDMI interface into the channel data corresponding to the new HDMI interface, and generating a new EDID file.

In some embodiments of the present application, the controller is further configured to: and if the external equipment cannot provide the content required when the local terminal realizes the specified function, closing the specified function switch, deleting the functional data for realizing the specified function in the EDID file, and generating a new EDID file.

In some embodiments of the present application, the controller, in performing the data transmission with the external device based on the new EDID file, is further configured to:

after a new EDID file is generated, waiting for a preset time, and generating a data rereading notice;

sending the data rereading notification to the external equipment, wherein the data rereading notification is used for indicating the external equipment to reread the functional data of the new EDID file;

and receiving the function content returned by the external equipment based on the function data of the new EDID file, and displaying the function content in a user interface.

In a second aspect, the present application further provides a multi-channel data transmission method, including:

In some embodiments of the present application, the method further comprises:

storing each EDID file in an external storage space;

In some embodiments of the present application, the method further comprises: when the external equipment is accessed through a new HDMI, responding to a new access request generated when the external equipment is accessed through the new HDMI, and acquiring the functional characteristics of the new HDMI, wherein the functional characteristics are used for representing the functions realized by the corresponding HDMI;

and if the functional characteristics of the new HDMI interface are the same as those of the specified HDMI interface, modifying the channel data in the EDID file corresponding to the specified HDMI interface into the channel data corresponding to the new HDMI interface to generate a new EDID file.

In some embodiments of the present application, the method further comprises: and if the external equipment can not provide the content required when the local terminal realizes the specified function, closing the specified function switch, deleting the functional data for realizing the specified function in the EDID file, and generating a new EDID file.

In some embodiments of the present application, the performing data transmission with an external device based on the new EDID file includes:

In a third aspect, the present application further provides a storage medium, where the computer storage medium may store a program, and the program may implement, when executed, some or all of the steps in the embodiments of the multi-channel data transmission method provided in the present application.

According to the technical scheme, when the external device is accessed through the appointed HDMI, if the system setting parameter represents that the appointed function switch at the local end is in the on state, the functional data for realizing the appointed function is reserved in the EDID file so as to perform data transmission with the external device; and if the designated function switch of the system setting parameter representation home terminal is in a closed state, deleting the functional data used for realizing the designated function in the EDID file, and generating a new EDID file for data transmission with the external equipment. Therefore, the method and the display device provide an EDID file for the HDMI interfaces with the same function based on the same version. When the EDID file is called subsequently, the EDID file is changed in real time through methods of reserving, deleting, writing, modifying and the like on the basis of the setting of a user, and an EDID file is regenerated to carry out data transmission. Therefore, the trouble of maintaining a plurality of pieces of EDID can be avoided, the EDID called by any HDMI interface for connecting external equipment can be ensured to support the transmission of data with appointed functions, and the multi-channel data transmission efficiency is high.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.

FIG. 1 illustrates a schematic diagram of an operational scenario between a display device and a control apparatus according to some embodiments;

fig. 2 illustrates a hardware configuration block diagram of a display device 200 according to some embodiments;

fig. 3 shows a block diagram of a hardware configuration of the control apparatus 100 according to some embodiments;

FIG. 4 illustrates a software configuration diagram in the display device 200 according to some embodiments;

FIG. 5 illustrates a data flow diagram for invoking an EDID file, in accordance with some embodiments;

FIG. 6 illustrates a flow diagram of a multi-channel data transmission method according to some embodiments;

fig. 7 illustrates a data flow diagram of EDID file modification according to some embodiments;

FIG. 8 illustrates a schematic diagram of a designated function switch, according to some embodiments.

Detailed Description

To make the purpose and embodiments of the present application clearer, the following will clearly and completely describe the exemplary embodiments of the present application with reference to the attached drawings in the exemplary embodiments of the present application, and it is obvious that the described exemplary embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

It should be noted that the brief descriptions of the terms in the present application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of the present application. These terms should be understood in their ordinary and customary meaning unless otherwise indicated.

The terms "first," "second," "third," and the like in the description and claims of this application and in the above-described drawings are used for distinguishing between similar or analogous objects or entities and not necessarily for describing a particular sequential or chronological order, unless otherwise indicated. It is to be understood that the terms so used are interchangeable under appropriate circumstances.

The terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or apparatus that comprises a list of elements is not necessarily limited to all elements expressly listed, but may include other elements not expressly listed or inherent to such product or apparatus.

The term "module" refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware and/or software code that is capable of performing the functionality associated with that element.

FIG. 1 illustrates a usage scenario of a display device according to some embodiments. As shown in fig. 1, the display apparatus 200 is also in data communication with a server 400, and a user can operate the display apparatus 200 through the smart device 300 or the control device 100.

In some embodiments, the control apparatus 100 may be a remote controller, and the communication between the remote controller and the display device includes at least one of an infrared protocol communication or a bluetooth protocol communication, and other short-distance communication methods, and controls the display device 200 in a wireless or wired manner. The user may control the display apparatus 200 by inputting a user instruction through at least one of a key on a remote controller, a voice input, a control panel input, and the like.

In some embodiments, the smart device 300 may include any of a mobile terminal, a tablet, a computer, a laptop, an AR/VR device, and the like.

In some embodiments, the smart device 300 may also be used to control the display device 200. For example, the display device 200 is controlled using an application program running on the smart device.

In some embodiments, the smart device 300 and the display device may also be used for communication of data.

In some embodiments, the display device 200 may also be controlled in a manner other than the control apparatus 100 and the smart device 300, for example, the voice instruction control of the user may be directly received by a module configured inside the display device 200 to obtain a voice instruction, or may be received by a voice control apparatus provided outside the display device 200.

In some embodiments, the display device 200 is also in data communication with a server 400. The display device 200 may be allowed to be communicatively connected through a Local Area Network (LAN), a Wireless Local Area Network (WLAN), and other networks. The server 400 may provide various contents and interactions to the display apparatus 200. The server 400 may be a cluster or a plurality of clusters, and may include one or more types of servers.

In some embodiments, software steps executed by one step execution agent may be migrated on demand to another step execution agent in data communication therewith for execution. Illustratively, software steps performed by the server may be migrated on demand to be performed on the display device in data communication therewith, and vice versa.

Fig. 2 illustrates a block diagram of a hardware configuration of the control apparatus 100 according to some embodiments. As shown in fig. 2, the control device 100 includes a controller 110, a communication interface 130, a user input/output interface 140, a memory, and a power supply. The control apparatus 100 may receive an input operation instruction from a user and convert the operation instruction into an instruction recognizable and responsive by the display device 200, serving as an interaction intermediary between the user and the display device 200.

In some embodiments, the communication interface 130 is used for external communication, and includes at least one of a WIFI chip, a bluetooth module, NFC, or an alternative module.

In some embodiments, the user input/output interface 140 includes at least one of a microphone, a touchpad, a sensor, a key, or an alternative module.

Fig. 3 illustrates a hardware configuration block diagram of a display device 200 according to some embodiments. Referring to fig. 3, in some embodiments, the display apparatus 200 includes at least one of a tuner demodulator 210, a communicator 220, a detector 230, an external device interface 240, a controller 250, a display 260, an audio output interface 270, a memory, a power supply, and a user interface.

In some embodiments the controller comprises a central processor, a video processor, an audio processor, a graphics processor, a RAM, a ROM, a first interface to an nth interface for input/output.

In some embodiments, the display 260 includes a display screen component for displaying pictures, and a driving component for driving image display, a component for receiving image signals from the controller output, displaying video content, image content, and menu manipulation interface, and a user manipulation UI interface, etc.

In some embodiments, the display 260 may be at least one of a liquid crystal display, an OLED display, and a projection display, and may also be a projection device and a projection screen.

In some embodiments, the controller 250 and the modem 210 may be located in different separate devices, that is, the modem 210 may also be located in an external device of the main device where the controller 250 is located, such as an external set-top box.

In some embodiments, the controller 250 controls the operation of the display device and responds to user operations through various software control programs stored in memory. The controller 250 controls the overall operation of the display apparatus 200. For example: in response to receiving a user command for selecting a UI object to be displayed on the display 260, the controller 250 may perform an operation related to the object selected by the user command.

In some embodiments, the object may be any one of selectable objects, such as a hyperlink, an icon, or other operable control. The operations related to the selected object are: displaying an operation connected to a hyperlink page, document, image, or the like, or performing an operation of a program corresponding to the icon.

In some embodiments the controller comprises at least one of a Central Processing Unit (CPU), a video processor, an audio processor, a Graphics Processing Unit (GPU), a RAM Random Access Memory (RAM), a ROM (Read-Only Memory), a first to nth interface for input/output, a communication Bus (Bus), and the like.

In some embodiments, a user may enter user commands on a Graphical User Interface (GUI) displayed on display 260, and the user input interface receives the user input commands through the Graphical User Interface (GUI). Alternatively, the user may input the user command by inputting a specific sound or gesture, and the user input interface receives the user input command by recognizing the sound or gesture through the sensor.

In some embodiments, a "user interface" is a media interface for interaction and information exchange between an application or operating system and a user that enables conversion between an internal form of information and a form that is acceptable to the user. A commonly used presentation form of the User Interface is a Graphical User Interface (GUI), which refers to a User Interface related to computer operations and displayed in a graphical manner. It may be an interface element such as an icon, a window, a control, etc. displayed in the display screen of the electronic device, where the control may include at least one of an icon, a button, a menu, a tab, a text box, a dialog box, a status bar, a navigation bar, a Widget, etc. visual interface elements.

In some embodiments, user interface 280 is an interface that may be used to receive control inputs (e.g., physical buttons on the body of the display device, or the like).

Fig. 4 illustrates a software configuration diagram in the display device 200 according to some embodiments. Referring to fig. 4, in some embodiments, the system is divided into four layers, which are an Application (Applications) layer (abbreviated as "Application layer"), an Application Framework (Application Framework) layer (abbreviated as "Framework layer"), an Android runtime (Android runtime) and system library layer (abbreviated as "system runtime library layer"), and a kernel layer from top to bottom.

In some embodiments, at least one application program runs in the application program layer, and the application programs may be windows (windows) programs carried by an operating system, system setting programs, clock programs or the like; or may be an application developed by a third party developer. In particular implementations, the application packages in the application layer are not limited to the above examples.

The framework layer provides an Application Programming Interface (API) and a programming framework for the application program. The application framework layer includes a number of predefined functions. The application framework layer acts as a processing center that decides to let the applications in the application layer act. The application program can access the resources in the system and obtain the services of the system in execution through the API interface.

As shown in fig. 4, in the embodiment of the present application, the application framework layer includes Managers (Managers), providers (Content providers), a network management system, and the like, where the Managers include at least one of the following modules: an Activity Manager (Activity Manager) is used for interacting with all activities running in the system; the Location Manager (Location Manager) is used for providing the system service or application with the access of the system Location service; a Package Manager (Package Manager) for retrieving various information related to an application Package currently installed on the device; a Notification Manager (Notification Manager) for controlling display and clearing of Notification messages; a Window Manager (Window Manager) is used to manage the icons, windows, toolbars, wallpapers, and desktop components on a user interface.

In some embodiments, to improve the functionality of the display device, multiple HDMI interfaces are configured within the display device. Each HDMI interface is typically connected to an external device through a corresponding EDID (Extended Display Identification Data) to form a multi-channel Data transmission path, so as to present the functional content provided by the external device in the Display device.

The display device indicates the functions supported by itself through the EDID. The EDID data structure is formed by splicing different fields, namely the content of one field is used for indicating that the display device has the capability of providing corresponding functions, and one field corresponds to one function. The field content corresponds to an identifier, and if the field content corresponding to the specified function exists in the EDID, the field content indicates that the display device supports the capability of implementing the specified function. For example, for the fresync function (variable refresh rate function), if it is indicated that the display device supports the variable refresh rate function, a fresync field is added to the EDID.

The same EDID can support different functions, and the different functions can be distinguished according to the corresponding field contents. The EDID stores data of different functions supported by the display device, but as the display device develops more and more supported functions, more differentiation is presented, so that the EDID of each HDMI interface has multiple versions such as 1.4, 2.0 and 2.1, that is, one HDMI interface can call the EDIDs of multiple versions to realize data transmission.

EDIDs of different versions corresponding to the same HDMI interface can realize that the data transmission functions are partially the same, and different parts also exist, for example, EDIDs of 1.4 versions can realize data transmission of function 1, function 2 and the like; the EDID version 2.0 can realize data transmission of function 1, function 2, function 3, function 4, and the like; EDID version 2.1 can implement data transmission of function 1, function 2, function 3, function 4, function 5, function 6, etc.

For another example, for the control of the fresync function, EDIDs of different versions are also required, that is, EDIDs supporting the fresync function and EDIDs not supporting the fresync function are included. The display device tells whether the local terminal of the external device needs the Freesync signal or not by judging whether the called EDID contains the Freesync field or not, and if the called EDID supports the Freesync function, the called EDID contains the Freesync field and can tell that the external device can transmit the Freesync signal to the display device; if the EDID which does not support the Freesync function is called, the called EDID does not contain the Freesync field, and the external device can be informed that the Freesync signal can not be transmitted to the display device.

For different HDMI interfaces, if the functions implemented by the two interfaces are the same, the EDID versions corresponding to the two HDMI interfaces are basically the same, and the difference is only in the field content of the physical address of the surface channel.

Under the condition that the same HDMI interface corresponds to multiple versions of EDID, if data transmission corresponding to the function 6 is to be realized, the EDID for realizing the data transmission of the function 6 is usually 2.1 version, but if the HDMI interface calls 1.4 version of EDID for data transmission, and the 1.4 version of EDID does not support the data transmission corresponding to the function 6, data transmission failure will be caused, and data transmission efficiency will be affected.

In addition, the existing EDIDs always store the field contents of the functions supporting data transmission, that is, the existing EDID data structure is fixed, and the EDIDs need to be maintained and managed separately. If one display device is configured with 4 HDMI interfaces, one HDMI interface corresponding to 3 EDID versions, then there will be 12 EDID versions to maintain. When the function requirement of each HDMI is changed, 12 parts of EDID are required to be correspondingly modified, the process is very complicated, and the maintenance is difficult. Moreover, if each EDID is not completely modified, the EDID called by the HDMI interface cannot realize the transmission condition of data required by the corresponding function, which affects the data transmission efficiency.

Therefore, in order to facilitate maintenance of the EDIDs corresponding to the HDMI interfaces and avoid problems in calling the EDIDs and influence on data transmission efficiency, embodiments of the present invention provide a display device, and for HDMI interfaces having the same function, only one EDID template needs to be provided based on one version, and multiple EDIDs do not need to be maintained. Moreover, when the EDID template is called subsequently, the EDID template can be changed by methods of reserving, deleting, writing, modifying and the like on the basis of the EDID template based on the setting of a user, and the EDID is regenerated and then updated to the system. Therefore, the trouble of maintaining a plurality of pieces of EDID can be avoided, and the EDID can be modified in real time according to actual requirements, so that the EDID called by any HDMI interface for connecting external equipment can support the transmission of data with specified functions, and the multi-channel data transmission efficiency is high.

To this end, when creating an EDID template, an embodiment of the present invention provides a display device, including: a display configured to present a user interface; a controller coupled to the display, the controller configured to perform the steps of:

and step 01, before the external equipment is accessed, acquiring different versions of function data of different functions realized by each HDMI interface.

And 02, generating EDID files based on the function data of the same version corresponding to each HDMI interface for realizing the same function, wherein one version corresponds to one EDID file, and one EDID file is used for realizing the data transmission of the function supported by the same version corresponding to at least one HDMI interface.

And step 03, storing all the EDID files in an external storage space.

And step 04, loading the EDID files of the versions in the external storage space into the internal storage space when the equipment runs, wherein each EDID file in the internal storage space is used for providing the corresponding EDID file when the external equipment is accessed.

The EDID template needs to be created in advance, so that when the subsequent external equipment is connected into the display equipment, the display equipment can modify the EDID template in time according to the setting requirement, data transmission is carried out between the display equipment and the external equipment, and the data transmission efficiency is improved.

During creation, in order to facilitate maintenance of the EDID, the functional data of the same version of the HDMI interface supporting the same function is uniformly generated into a common EDID template, and therefore, the functional data of different versions of different functions implemented by each HDMI interface needs to be acquired. The function data refers to the contents of the fields constituting the EDID. Wherein the version refers to a version of EDID.

The "different functions realized" herein refer to all functions supported by the same version EDID corresponding to the HDMI interface. Based on the foregoing, a certain HDMI interface corresponds to EDIDs of three versions, for example, EDID of 1.4 version can implement data transmission of function 1, function 2, and the like, and all functions that can be supported by 1.4 version corresponding to the HDMI interface are function 1 to function 2. The EDID of the version 2.0 can realize data transmission of the function 1, the function 2, the function 3, the function 4 and the like, and all the functions which can be supported by the version 2.0 corresponding to the HDMI interface are the functions 1 to 4; the EDID of the version 2.1 can implement data transmission of the function 1, the function 2, the function 3, the function 4, the function 5, the function 6, and the like, and all the functions that can be supported by the version 2.1 corresponding to the HDMI interface are the functions 1 to 6.

Therefore, the function data acquired in this embodiment is all the function data of the functions 1 to 2 realized by the EDID version 1.4, all the function data of the functions 1 to 4 realized by the EDID version 2.0, and all the function data of the functions 1 to 6 realized by the EDID version 2.1 corresponding to the HDMI interface.

All functions supported by different HDMI interfaces may be the same or different, for example, all functions supported by HDMI interface 1 and HDMI interface 2 are the same, and all functions supported by HDMI interface 3 and HDMI interface 4 are the same, but all functions supported by HDMI interface 1 and HDMI interface 3 (or interface 4) are different, and all functions supported by HDMI interface 2 and HDMI interface 3 (or interface 4) are different.

Based on this, the functions supported by EDIDs corresponding to the HDMI interfaces with the same function are the same, for example, the functions supported by EDID version 1.4 in HDMI interface 1 are the same as the functions supported by EDID version 1.4 in HDMI interface 2; the functions supported by the 2.0 version EDID in the HDMI interface 1 are the same as the functions supported by the 2.0 version EDID in the HDMI interface 2; the functions supported by the 2.1 version EDID in the HDMI interface 1 are the same as those supported by the 2.1 version EDID in the HDMI interface 2.

The functions supported by the versions corresponding to the HDMI interfaces supporting different functions are different, for example, the functions supported by the EDID version 1.4 in the HDMI interface 1 are different from the functions supported by the EDID version 1.4 in the HDMI interface 3 (or interface 4), and EDIDs of other versions are not listed.

In order to facilitate management of the EDID, the HDMI interfaces which call the EDID of the same version and are used for realizing the same function are gathered, a common EDID template is provided for the same version of the HDMI interfaces, and one EDID template corresponds to one version EDID. At this time, an EDID file is generated based on the functional data corresponding to each HDMI interface calling the same version of EDID and realizing the same function, and the EDID file is an EDID template including the functional data of all the functions supported by the same version of EDID corresponding to the corresponding HDMI interface. Illustratively, one possible EDID file includes function data of function 1 and function 2 supported by versions 1.4 of HDMI interface 1 and HDMI interface 2; one possible EDID file includes function data of functions 1 to 4 supported by the 2.0 version of the HDMI interface 1 corresponding to the HDMI interface 2.

For another example, the 2.1 version of the HDMI interface 1 can support 6 functions (function 1 to function 6), and then an EDID file is generated based on the function data of the 6 functions. The 2.1 version of the HDMI interface 2 can also support the 6 functions (function 1 to function 6), and the 2.1 version of the HDMI interface 2 and the 2.1 version of the HDMI interface 1 share one EDID file. Therefore, one version EDID corresponds to one EDID file, and one EDID file is used for realizing data transmission of the functions supported by the same version EDID corresponding to at least one HDMI interface.

For calling HDMI interfaces with EDID of other versions with the same function and for HDMI interfaces with different versions for realizing different functions, different HDMI files can be generated based on the method. In order to facilitate calling, the HDMI files corresponding to the EDID of each version are stored in an external storage space, such as a Flash space of display equipment, so that the content of the EDID files can be modified in real time according to the requirements of users, and data transmission is realized.

Fig. 5 illustrates a data flow diagram for invoking an EDID file, according to some embodiments. Referring to fig. 5, after the EDID files of EDID versions supporting different functions are generated based on the foregoing method, each EDID file is stored in an external storage space, which is a static storage manner of the display device. When the display device operates, in order to facilitate the calling and modifying of the EDID file, the EDID file corresponding to each version EDID in the external storage space needs to be loaded into the internal storage space, and the internal storage space may be an ram memory of the display device.

Each EDID file in the internal storage space is used for providing the EDID file of the corresponding version when the external equipment is accessed. For example, when the display device is externally connected to an external device through the HDMI interface 1 according to the user's needs, if the external device can provide the content of the function 1, the display device side needs to have the capability of supporting the function 1. In the foregoing embodiment, all three EDID files corresponding to the HDMI interface 1 can support the function 1, and therefore, any one EDID file can be selected and the function data of the function 1 needs to be retained in the EDID file. At this time, the external device may transmit all the contents including the function 1 to the display device based on the EDID, presenting all the contents on the display device side.

If the external device can provide the content of function 2, the display device side needs to have the capability of supporting function 2. In the foregoing embodiment, the three EDID files corresponding to the HDMI interface 1 can support the function 2, and therefore, any one EDID file can be selected, and the function data of the function 2 needs to be retained in the EDID file. At this time, the external device may transmit all the contents including the function 2 to the display device based on the EDID, presenting all the contents on the display device side.

However, if the display device side does not have the capability of supporting the function 1 (or the function 2), the function data of the function 1 (or the function 2) in the EDID file is deleted, and a copy of the EDID is newly generated, so that the external device transmits contents other than the function 1 (or the function 2) to the display device based on the newly generated EDID.

Therefore, the display device provided by the embodiment of the invention configures a common EDID file for calling each HDMI interface with the same version and the same function, does not need to maintain multiple EDIDs, and can save Flash space. And when the EDID file is called subsequently, the EDID file is changed by methods of reserving, deleting, writing, modifying and the like on the basis of the EDID file based on the setting of the user, a copy of EDID is regenerated, and data transmission between the display equipment and the external equipment is realized based on the newly generated EDID file. Therefore, the trouble of maintaining a plurality of EDIDs can be avoided, and the EDIDs can be modified in real time according to actual requirements, so that the EDIDs called by the HDMI interfaces can support the transmission of data with specified functions, and the data transmission efficiency is high.

FIG. 6 illustrates a flow diagram of a multi-channel data transmission method according to some embodiments; fig. 7 illustrates a data flow diagram of EDID file modification according to some embodiments. In the display device according to the embodiment of the present invention, when the multi-channel data transmission method shown in fig. 6 and 7 is performed, the controller is configured to perform the following steps:

s1, responding to an access request generated when the external device accesses through the designated HDMI, obtaining system setting parameters and an EDID file of a designated version corresponding to the designated HDMI, wherein the external device is used for providing contents required when the local terminal realizes a designated function, and the EDID file is a common file generated based on function data of the same version corresponding to each HDMI for realizing the same function.

When an external device accesses a display device through a designated HDMI interface, an access request is generated. The external equipment can be game boxes, power amplifier equipment, DVDs and the like. The designated HDMI interface may be HDMI interface 1, HDMI interface 2, HDMI interface 3, or HDMI interface 4.

Different external devices provide different contents, and thus different functions supported by the display device side are required. For the game box, in order to improve the display effect of the game interface, the content provided by the game box usually needs the display device to have a fresync function (variable refresh rate function). When the display device is provided with the fresync function, the external device may provide contents necessary when the display device implements the fresync function.

Therefore, in order to determine whether the external device needs to transmit the content required for realizing the designated function to the display device side, it is necessary to determine whether the display device side supports the designated function, at this time, the system setting parameter and the EDID file of the designated version corresponding to the designated HDMI interface may be obtained, it is determined whether the display device side needs to support the designated function through the system setting parameter, and it is determined whether the functional data of the designated function needs to exist in the EDID file of the designated version.

The EDID file stores functional data of all functions supported by the specified version corresponding to the specified HDMI interface. Therefore, when the EDID file of the specified version is acquired, the required version can be determined according to the content provided by the external device to implement the specified function.

In some embodiments, the external device is configured to provide content required when the display device implements a specified function, and therefore, an access request generated by the external device when the display device is connected carries an identifier of the specified function, the identifier being configured to identify the specified function.

After receiving the access request, the display device can determine which function the local terminal needs to support according to the identifier. Different EDID versions can realize different functions, so that which version of the EDID file is required in the designated HDMI interface can be further determined according to the function corresponding to the identifier.

After the EDID file of the designated version is selected based on the method, in order to ensure the efficiency of data transmission, the data structure of the EDID file needs to be determined according to the switching condition of each function represented by the system setting parameters, namely, the functional data in the EDID file can be changed in real time according to the setting of a user. For example, a switch for implementing each function may be configured in the display device, and whether the function data corresponding to the specified function needs to be retained in the EDID file is determined by turning on or off the switch, so as to determine whether the display device needs to support the specified function.

If the user wants the display device to support the appointed function, the appointed function switch is turned on, and the system setting parameters comprise the parameters for turning on the appointed function; and if the user wants that the display equipment does not support the specified function, closing the specified function switch, wherein the system setting parameters comprise parameters for closing the specified function.

And S2, when the designated function switch of the system setting parameter representation home terminal is in an on state, reserving functional data for realizing the designated function in the EDID file, and performing data transmission with external equipment based on the EDID file.

When the display apparatus is operated, if the user wants the display apparatus to support a designated function, the designated function switch may be turned on.

FIG. 8 illustrates a schematic diagram of a designated function switch, according to some embodiments. Referring to fig. 8, the designated function switch may be configured in a system setting, and the user turns on the designated function switch in a popped up system setting interface by clicking a system setting control presented in the user interface. And after the appointed function switch is turned on, storing the corresponding appointed function starting parameter into the system setting parameter. When the designated function is the Freesync function, the start parameter of the Freesync function is stored in the system setting parameter after the Freesync function switch is started.

In some embodiments, the switch state of the designated function switch may be set when the display device is running, or may be set after the display device is connected to the external device, which is not specifically limited in this application.

When the system setting parameter representation appointed function switch is in an on state, the display device is explained to support the appointed function, namely the display device can receive the content corresponding to the appointed function transmitted from the external device to the local terminal. Therefore, in order to facilitate notification that the external device can transmit corresponding data to the display device, functional data for realizing a specified function can be reserved in the EDID file. At this time, the EDID file does not need to be modified, and the display device can perform data transmission with the external device based on the EDID file.

The function data of the specified function in the EDID file is for being recognized by the external device to notify the external device that the content of the specified function can be transmitted to the display device. That is, the functional data is equivalent to the identifier for data transmission between the display device and the external device, and if the functional data of a certain function exists, it indicates that the external device can transmit corresponding content; if the function data of a certain function does not exist, the external device does not need to transmit corresponding content.

For example, when the display device is required to support the fresync function, the fresync function is usually configured in the 2.1 version EDID file, so that the corresponding HDMI interface calls the function data with the fresync field in the data structure of the 2.1 version EDID file. After the external device reads the EDID file, the fields in the EDID file are identified to find that the Freesync field exists, and the Freesync signal is determined to be sent. After the display device receives the Freesync signal sent by the external device, the content corresponding to the Freesync signal can be presented in the user interface.

Because the functional data of all functions supported by the specified version corresponding to the specified HDMI interface are stored in the EDID file, when the specified function is determined to be supported by the display device based on the system setting parameters, the EDID file does not need to be changed, and the EDID file at the moment can realize that the external device transmits the content of the specified function to the display device.

And S3, when the designated function switch of the system setting parameter representation home terminal is in a closed state, deleting the functional data used for realizing the designated function in the EDID file, generating a new EDID file, and performing data transmission with the external equipment based on the new EDID file.

When the display apparatus is operated, if the user does not want the display apparatus to support the designated function, the designated function switch may be turned off. And after the appointed function switch is closed, storing the corresponding appointed function closing parameter into a system setting parameter.

When the system setting parameter representation appointed function switch is in the closed state, it indicates that the display device does not support the appointed function, that is, the display device cannot receive and present the content corresponding to the appointed function transmitted to the local terminal by the external device. Therefore, in order to inform that the external device does not need to transmit corresponding data to the display device, the function data for implementing the specified function may be deleted in the EDID file. At this time, the EDID file needs to be generated again, and the display device may perform data transmission with the external device based on the new EDID file.

The EDID file does not include the function data of the specified function, and the external equipment can not recognize the function data of the specified function, so that the content of the specified function can be determined without being transmitted to the display equipment. For example, when the display device is not required to support the Freesync function, the corresponding HDMI interface is called to delete the function data of the Freesync field in the data structure of the 2.1 version EDID file. Thus, after the external device reads the EDID file, the fields in the EDID file are identified, and the Freesync field does not exist, so that the fact that the Freesync signal does not need to be sent out, namely the content corresponding to the Freesync signal does not need to be sent to the display device is determined.

The EDID file stores the functional data of all functions supported by the specified version corresponding to the specified HDMI interface, so that when the display device does not need to support the specified function based on the system setting parameters, the EDID file needs to be changed, at the moment, the functional data of the specified function in the EDID file is deleted, and the data transmission from the external device to the display device is realized based on the new EDID file. And the data transmission content at this time does not include the content of the specified function, but only the content of other functions supported by the display device.

In some embodiments, if the display device does not need to support the specified function during the previous data transmission process, the function data of the specified function is deleted from the EDID file. However, if the display device needs to support the designated function in the next data transmission process, the designated function switch is turned on. And rewriting the function data of the specified function into the EDID file, and realizing data transmission between the display device and the external device based on the newly generated EDID file, wherein the data transmission content comprises the content of the specified function. For the specific process of performing identification and data transmission by the external device, reference may be made to the foregoing description, and details are not described here.

In some embodiments, after the modification of the EDID file, the external device is informed to perform data transmission based on the new EDID file, and therefore, the controller is further configured to perform the following steps when performing data transmission with the external device based on the new EDID file:

and step 31, after the new EDID file is generated and the preset time is waited, generating a data rereading notice.

And step 32, sending a data rereading notice to the external equipment, wherein the data rereading notice is used for indicating the external equipment to reread the functional data of the new EDID file.

And step 33, receiving the function content returned by the external equipment based on the function data of the new EDID file, and displaying the function content in the user interface.

After the EDID file is changed in real time based on the setting of the user, the display equipment can wait for a preset time period to generate a data re-reading notice for finishing the updating of the data with the time guarantee. In some embodiments, the preset duration may be set to 900 ms.

And after 900ms, sending a data rereading notice to the external device, wherein the data rereading notice is used for informing the external device to reread the newly generated EDID file.

After the external device reads the new EDID file again, if the new EDID file is generated after data deletion processing, the external device cannot recognize the functional data of the specified function, but can recognize only the functional data of other functions, so that the external device can send the content of other functions to the display device based on the read functional data of other functions.

If the new EDID file is a file generated after the data writing process, the external device can recognize the function data of the specified function, and thus, the content of the specified function can be transmitted to the display device based on the read function data of the specified function.

Therefore, after the display device modifies the EDID file in real time based on the user setting, the display device can inform the external device to read the new EDID file again after the preset time length, so that the external device can determine whether to send the content of the appointed function to the display device based on the latest EDID file, and the data transmission is ensured.

In some embodiments, since HDMI interfaces for realizing the same function have a common EDID file, if a user connects an external device to a display device through one of the HDMI interfaces for data transmission first, then connects to the display device through the other HDMI interface for data transmission next time. At this time, since the two HDMI interfaces can realize the same function, it is not necessary to modify the function data of the specified function in the EDID file.

However, since the channel data of different HDMI interfaces are different, the channel data is used to identify the data transmission channel formed by the corresponding HDMI interface, and in order to clarify the data transmission channel between the external device and the display device, the channel data in the EDID file needs to be modified.

In particular, in this process, the controller is further configured to perform the steps of:

and step 41, when the external device is accessed through the new HDMI interface, responding to a new access request generated when the external device is accessed through the new HDMI interface, and acquiring the functional characteristics of the new HDMI interface, wherein the functional characteristics are used for representing the functions realized by the corresponding HDMI interface.

And 42, if the functional characteristics of the new HDMI interface are the same as those of the appointed HDMI interface, modifying the channel data in the EDID file corresponding to the appointed HDMI interface into the channel data corresponding to the new HDMI interface, and generating a new EDID file.

After the display device connects the external device through the designated HDMI interface, if the external device is connected again with the new HDMI interface, a new access request is generated. And responding to the new access request to acquire the functional characteristics of the new HDMI in order to judge whether the EDID file called by the new HDMI needs to be modified.

And comparing the functional characteristics of the designated HDMI corresponding to the previous data transmission channel with the functional characteristics of the new HDMI, wherein the functional characteristics are used for representing the functions realized by the HDMI. Therefore, if the functional characteristics of the two HDMI interfaces are the same, it means that the functions implemented by the two HDMI interfaces are the same, i.e. the two HDMI interfaces share one EDID file.

If the new HDMI interface and the appointed HDMI interface realize the same function and share one EDID file, the EDID file does not need to be modified based on the setting of the appointed function by the user. However, since the channel data of the two HDMI interfaces are different, that is, the formed data transmission channels are different, the channel data in the EDID file needs to be modified. Namely, the channel data in the EDID file corresponding to the appointed HDMI is modified into the channel data corresponding to the new HDMI, and a new EDID file is generated.

For example, the HDMI interface 1 (specified HDMI interface) and the HDMI interface 2 (new HDMI interface) are similar in function, and the difference portion is different only in the field indicating the HDMI channel, i.e., the channel data is different. Then, based on the foregoing method, only the field portion indicating the channel in the EDID file needs to be replaced, that is, the channel data corresponding to the HDMI interface 1 is deleted and replaced with the channel data of the HDMI interface 2, so as to generate a new EDID file.

At this time, the generated new EDID file includes the channel data of the HDMI interface 2, which is used to indicate the data transmission interface between the external device and the display device.

After the new EDID file is generated, the external device needs to be notified to perform re-reading, and the specific implementation process may refer to the processes from step 31 to step 33 in the foregoing embodiment, which is not described herein again.

In some embodiments, if the designated function switch is turned on the display device side, but the accessed external device may not transmit the content corresponding to the designated function, at this time, an incompatibility condition may exist. Therefore, to ensure that the external device can smoothly transmit other content to the display device, the controller is further configured to perform the following steps: and if the external equipment can not provide the content required when the local terminal realizes the specified function, closing the specified function switch, deleting the functional data for realizing the specified function in the EDID file, and generating a new EDID file.

When the appointed function switch is turned on the side of the display equipment, the description shows that the functional data of the appointed function is reserved in the corresponding EDID file. In this case, when the external device accesses, it is recognized that the EDID file contains function data of the specified function, but the external device cannot provide the content for realizing the specified function. At this time, in order to avoid affecting normal data transmission of the external device, the display device may close the designated function switch, and delete the function data of the designated function in the EDID file to generate a new EDID file.

In some embodiments, when determining whether the external device can provide the content required by the local terminal to implement the specified function, the determination may be made according to an access request generated when the external device is accessed. And if the function corresponding to the identifier is inconsistent with the function started in the display equipment, the external equipment cannot provide the content required by the display equipment for realizing the specified function.

When the external device does not support the designated function, for example, a switch for turning on the fresync function in the display device, the accessed external device is a power amplifier device. And because the power amplifier device cannot provide relevant content for realizing the Freesync function, and if the power amplifier device identifies that functional data of the Freesync function exists in the EDID file, the power amplifier device cannot make a sound, and thus the Freesync function is incompatible with the power amplifier function.

Therefore, when the function to be implemented by the display device conflicts with the function corresponding to the content that can be provided by the power amplifier device, in order to ensure that the power amplifier device can smoothly transmit power amplifier data to the display device, the display device needs to delete the functional data of the Freesync function in the EDID file, and set a switch for turning off the Freesync function in the system.

The new EDID file of power amplifier equipment discernment again, at this moment, can not discern the functional data of Freesync function, only can discern power amplifier data and other functional data, consequently, can normally transmit power amplifier data and other functional data to display device, guarantee data transmission's normal clear, and then can guarantee that power amplifier equipment can make a sound.

Therefore, the corresponding EDID file is independently controlled through each data transmission channel of the display equipment, and is correspondingly modified in real time according to the functional characteristics of the accessed external equipment or user settings, so that the compatibility of the EDID file can be increased, and the normal data transmission can be ensured.

In some embodiments, the scene in which the EDID file needs to be modified further includes that the external device is connected to the HDMI interface calling the low version EDID file first, and then connected to the HDMI interface calling the high version EDID file. And the EDID file required by the external equipment for data transmission is a low version, and at the moment, the functional data of the specified function in the currently connected high version EDID file can be deleted to generate a new EDID file so as to transmit data to the display equipment based on the new EDID file.

As can be seen from the foregoing technical solutions, according to the display device provided in the embodiment of the present invention, when an external device is accessed through a specific HDMI interface, if a system setting parameter indicates that a specific function switch at a local terminal is in an on state, functional data for implementing a specific function is reserved in an EDID file, so as to perform data transmission with the external device; and if the designated function switch of the system setting parameter representation home terminal is in a closed state, deleting the functional data used for realizing the designated function in the EDID file, and generating a new EDID file for data transmission with the external equipment. Therefore, the display equipment provides an EDID file for the HDMI with the same function based on the same version. When the EDID file is called subsequently, the EDID file is changed in real time by methods of reserving, deleting, writing, modifying and the like on the basis of the EDID file based on the setting of a user, and an EDID file is regenerated to carry out data transmission. Therefore, the trouble of maintaining a plurality of pieces of EDID can be avoided, the EDID called by any HDMI interface for connecting external equipment can be ensured to support the transmission of data with appointed functions, and the multi-channel data transmission efficiency is high.

FIG. 6 illustrates a flow diagram of a multi-channel data transmission method according to some embodiments. Referring to fig. 6, an embodiment of the present invention provides a multi-channel data transmission method, where the method includes:

s1, responding to an access request generated when an external device is accessed through a specified HDMI, and acquiring system setting parameters and an EDID file corresponding to the specified HDMI, wherein the external device is used for providing contents required when a local terminal realizes specified functions, and the EDID file is a common file generated based on function data of the same version corresponding to each HDMI for realizing the same functions;

s2, when the designated function switch of the system setting parameter representation home terminal is in an open state, reserving functional data for realizing a designated function in the EDID file, and performing data transmission with external equipment based on the EDID file;

and S3, when the designated function switch of the system setting parameter representation home terminal is in a closed state, deleting the functional data used for realizing the designated function in the EDID file, generating a new EDID file, and performing data transmission with external equipment based on the new EDID file.

In some embodiments of the present application, the method further comprises:

storing each EDID file in an external storage space;

In some embodiments of the present application, the method further comprises:

and if the external equipment cannot provide the content required when the local terminal realizes the specified function, closing the specified function switch, deleting the functional data for realizing the specified function in the EDID file, and generating a new EDID file.

According to the technical scheme, when the external device is accessed through the designated HDMI, if the designated function switch of the system setting parameter representation local end is in the on state, the function data for realizing the designated function is reserved in the EDID file so as to perform data transmission with the external device; and if the designated function switch of the system setting parameter representation home terminal is in a closed state, deleting the functional data used for realizing the designated function in the EDID file, and generating a new EDID file for data transmission with the external equipment. Therefore, the method and the display device provide an EDID file for the HDMI interfaces with the same function based on the same version. When the EDID file is called subsequently, the EDID file is changed in real time by methods of reserving, deleting, writing, modifying and the like on the basis of the EDID file based on the setting of a user, and an EDID file is regenerated to carry out data transmission. Therefore, the trouble of maintaining a plurality of pieces of EDID can be avoided, the EDID called by any HDMI interface for connecting external equipment can be ensured to support the transmission of data with appointed functions, and the multi-channel data transmission efficiency is high.

In specific implementation, the present invention further provides a computer storage medium, where the computer storage medium may store a program, and the program may include some or all of the steps in each embodiment of the multi-channel data transmission method provided by the present invention when executed. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM) or a Random Access Memory (RAM).

Those skilled in the art will readily appreciate that the techniques of the embodiments of the present invention may be implemented as software plus a required general purpose hardware platform. Based on such understanding, the technical solutions in the embodiments of the present invention may be essentially or partially implemented in the form of a software product, which may be stored in a storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the embodiments or some parts of the embodiments.

The same and similar parts in the various embodiments in this specification may be referred to each other. Especially, for the embodiment of the multi-channel data transmission method, since it is basically similar to the embodiment of the display device, the description is simple, and the relevant points can be referred to the description in the embodiment of the display device.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

The foregoing description, for purpose of explanation, has been described with reference to specific embodiments. However, the illustrative discussions above are not intended to be exhaustive or to limit the embodiments to the precise forms disclosed above. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles and the practical application, to thereby enable others skilled in the art to best utilize the embodiments and various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A display device, comprising:

a display configured to present a user interface;

a controller connected to the display, the controller configured to:

2. The display device of claim 1, wherein the controller is further configured to:

storing each EDID file in an external storage space;

3. The display device of claim 1, wherein the controller is further configured to:

4. The display device of claim 1, wherein the controller is further configured to: and if the external equipment can not provide the content required when the local terminal realizes the specified function, closing the specified function switch, deleting the functional data for realizing the specified function in the EDID file, and generating a new EDID file.

5. The display device according to any one of claims 1, 3, and 4, wherein the controller, in performing the data transmission with the external device based on the new EDID file, is further configured to:

6. A method for multi-channel data transmission, the method comprising:

when the system setting parameter represents that a designated function switch at the local terminal is in an on state, reserving functional data for realizing a designated function in the EDID file, and performing data transmission with external equipment based on the EDID file;

7. The method of claim 6, further comprising:

storing each EDID file in an external storage space;

8. The method of claim 6, further comprising:

9. The method of claim 6, further comprising: and if the external equipment can not provide the content required when the local terminal realizes the specified function, closing the specified function switch, deleting the functional data for realizing the specified function in the EDID file, and generating a new EDID file.

10. The method according to any one of claims 6, 8 and 9, wherein the data transmission with the external device based on the new EDID file comprises: