CN111399922B - Dual-system display device and system - Google Patents
Dual-system display device and system Download PDFInfo
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- CN111399922B CN111399922B CN202010185632.5A CN202010185632A CN111399922B CN 111399922 B CN111399922 B CN 111399922B CN 202010185632 A CN202010185632 A CN 202010185632A CN 111399922 B CN111399922 B CN 111399922B
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- 230000009977 dual effect Effects 0.000 claims description 15
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- GJWAPAVRQYYSTK-UHFFFAOYSA-N [(dimethyl-$l^{3}-silanyl)amino]-dimethylsilicon Chemical compound C[Si](C)N[Si](C)C GJWAPAVRQYYSTK-UHFFFAOYSA-N 0.000 description 7
- 238000004590 computer program Methods 0.000 description 7
- 238000003860 storage Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/4401—Bootstrapping
- G06F9/4411—Configuring for operating with peripheral devices; Loading of device drivers
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4004—Coupling between buses
- G06F13/4022—Coupling between buses using switching circuits, e.g. switching matrix, connection or expansion network
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
- G06F13/4081—Live connection to bus, e.g. hot-plugging
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/4401—Bootstrapping
- G06F9/4406—Loading of operating system
- G06F9/441—Multiboot arrangements, i.e. selecting an operating system to be loaded
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Abstract
The invention discloses a double-system display device and a system, which are used for solving the technical problem that an interactive intelligent tablet carrying double systems cannot display contents in the double systems rapidly and stably in the prior art, wherein the display device comprises: the first operating system, the second operating system, the display screen and the nonvolatile memory are connected with the intelligent control module and are used for storing the extended display identification data EDID of the display screen; the intelligent control module is connected with the first operating system and the second operating system and is used for reading the EDID from the nonvolatile memory when the first operating system is started, and after receiving a control signal sent by the second operating system, the intelligent control module conducts a display data channel DDC and a hot plug HPD of the first operating system with the DDC and the HPD of the second operating system respectively so that the second operating system forwards display data sent by the first operating system to the display screen.
Description
Technical Field
The invention relates to the field of Internet, in particular to a dual-system display device and a dual-system display system.
Background
Interactive intelligent tablets (interactive intelligent panel, IIP), commonly known as large screens, are currently in wide use in classrooms and meeting rooms.
The interactive intelligent flat panel is an integrated device for controlling contents displayed on a display panel, such as a liquid crystal display (Liquid Crystal Display, LCD), a light emitting diode (Light Emitting Diode, LED) display screen and a plasma display screen (Plasma Display Panel, PDP) through a touch technology and realizing man-machine interaction operation. The hardware part of the interactive intelligent tablet consists of a touch positioning recognition system, a display system, a network system, an intelligent processing system and the like, which are combined together through integral structural members, and meanwhile, a special software system is used as a support. When a user touches the screen with a finger or a passive pen, the touch system positions the point coordinates, thereby realizing control of the intelligent processing system, and then realizing different functions through software built in the intelligent processing system.
Typically, interactive smartpads are equipped with Windows systems and android systems, and typically Windows systems run on an open pluggable specification (Open Pluggable Specification, OPS) of the interactive smartpad, which is a standardized digital signage interface specification co-formulated by Intel and display manufacturers. The OPS is composed of an X86-structured mini PC, and a processor is adopted, and is provided with a memory, a hard disk, various input/output interfaces and a Windows operation interface, wherein the size of the mini PC is 200mm X119mm x30mm.
However, after the dual system in the interactive intelligent tablet is started, the display screen sometimes cannot display the content to be displayed by the Windows system, but only can hear the sound played by the Windows system, so that the user cannot display the teaching courseware prepared in advance, which not only delays the time of teaching, but also reduces the working efficiency.
In view of this, how to make the interactive intelligent tablet with dual systems installed quickly and stably display the content in the dual systems is a technical problem to be solved.
Disclosure of Invention
The invention provides a dual-system display device and a dual-system display system, which are used for solving the technical problem that an interactive intelligent tablet with dual systems cannot display contents in the dual systems rapidly and stably in the prior art.
In order to solve the above technical problem, an embodiment of the present invention provides a dual-system display device, where the display device includes a first operating system, a second operating system, and a display screen, and the display device further includes:
the nonvolatile memory is connected with the intelligent control module and used for storing the extended display identification data EDID of the display screen;
the intelligent control module is connected with the first operating system and the second operating system, and is used for reading the EDID from the nonvolatile memory when the first operating system is started, and after receiving a control signal sent by the second operating system, conducting a display data channel DDC and a hot plug HPD of the first operating system with the DDC and the HPD of the second operating system respectively so that the second operating system forwards display data sent by the first operating system to the display screen.
The intelligent control module and the nonvolatile memory are arranged between the first operating system and the second operating system, so that the first operating system can read the EDID from the nonvolatile memory when being started, a display card of the first operating system can work, and after the second operating system is started, the DDC and the HPD of the first operating system are respectively conducted with the DDC and the HPD of the second operating system by sending control signals to the intelligent control module, the second operating system can normally receive display data sent by the first operating system and forward the display data to the display screen for display, and therefore the display screen can rapidly and stably display the data in the display cards of the two operating systems.
Optionally, the intelligent control module includes:
the first end of the first change-over switch is connected with the HPD pin of the first operating system, the second end of the first change-over switch is connected with the high-level end, and the third end of the first change-over switch is connected with the HPD pin of the second operating system; the first end and the second end of the first change-over switch are conducted in the initial state of the first change-over switch, and the first end and the third end of the first change-over switch are conducted after the control signal is received;
the first end of the second change-over switch is connected with a pin corresponding to the DDC of the first operating system, the second end of the second change-over switch is connected with the nonvolatile memory, and the third end of the second change-over switch is connected with a pin corresponding to the DDC of the second operating system; the first end and the second end of the second change-over switch are conducted in the initial state of the second change-over switch, and the second end and the third end of the second change-over switch are conducted after the control signal is received;
and the control signal end is used for receiving the control signal.
Optionally, the control signal is sent to the intelligent control module by the second operating system after the second operating system is started.
Optionally, the EDID data in the nonvolatile memory is pre-burned data.
Optionally, the EDID data in the nonvolatile memory is data written after the initialization of the second operating system is completed.
Optionally, the nonvolatile memory includes: read-only memory ROM, programmable read-only memory PROM, electrically rewritable read-only memory EAROM, erasable programmable read-only memory EPROM, electrically erasable programmable read-only memory EEPROM, and Flash memory.
Optionally, the method further comprises:
after the first operating system is started, if the first operating system does not read the EDID, the first operating system sends out alarm information.
Optionally, if the first operating system does not read the EDID data, the method further includes:
the first operating system reads historical EDID data from the first operating system.
Optionally, the display device is any one of a computer, a television, an interactive tablet, and a display device.
Optionally, the first operating system is a Windows system, and the second operating system is an android system.
In a second aspect, an embodiment of the present invention provides a dual system display system, including:
the method comprises the steps that after the first operating system is started, extended display identification data EDID is read from a nonvolatile memory, so that a display card of the first operating system starts to work;
after the second operating system is started, a control signal is sent to an intelligent control module, so that a display data channel DDC and a hot plug HPD of the first operating system are respectively switched to the DDC and the HPD of the second operating system, and the second operating system forwards display data of the first operating system to the display screen;
the intelligent control module is connected with the first operating system and the second operating system and is used for reading the EDID from the nonvolatile memory when the first operating system is started, and after receiving the control signal, conducting the DDC and the HPD of the first operating system with the DDC and the HPD of the second operating system respectively;
the display screen is connected with the second operating system and used for displaying data in the first operating system or the second operating system respectively display cards sent by the second operating system.
Through the technical scheme in the one or more embodiments of the present invention, the embodiments of the present invention have at least the following technical effects:
in the embodiment provided by the invention, the intelligent control module and the nonvolatile memory are arranged between the first operating system and the second operating system, so that the first operating system can read the EDID from the nonvolatile memory when being started, the display card of the first operating system can work, and after the second operating system is started, the DDC and the HPD of the first operating system are respectively conducted with the DDC and the HPD of the second operating system by sending control signals to the intelligent control module, so that the second operating system can normally receive the display data sent by the first operating system and forward the display data to the display screen for display, and the display screen can rapidly and stably display the data in the respective display cards of the two operating systems.
Drawings
FIG. 1 is a schematic view of an HDMI system;
fig. 2 is a schematic structural diagram of a dual-system display device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an intelligent control module according to an embodiment of the present invention;
fig. 4 is a schematic connection diagram of an intelligent control module in an initial state according to an embodiment of the present invention;
fig. 5 is a schematic connection diagram of an intelligent control module according to an embodiment of the present invention after receiving a control signal.
Detailed Description
The embodiment of the invention provides a dual-system display device and a dual-system display system, which are used for solving the technical problem that an interactive intelligent tablet with dual systems cannot display contents in the dual systems rapidly and stably in the prior art.
The technical scheme in the embodiment of the application aims to solve the technical problems, and the overall thought is as follows:
the dual-system display device comprises a first operating system, a second operating system, a display screen, a nonvolatile memory and an extended display identification data EDID, wherein the nonvolatile memory is connected with the intelligent control module and is used for storing the extended display identification data EDID of the display screen; the intelligent control module is connected with the first operating system and the second operating system and is used for reading the EDID from the nonvolatile memory when the first operating system is started, so that a display card of the first operating system can work, after a control signal sent by the second operating system is received, a display data channel DDC and a hot plug HPD of the first operating system are respectively conducted with the DDC and the HPD of the second operating system, so that the second operating system can normally receive display data sent by the first operating system and forward the display data to the display screen for display, and the display screen can rapidly and stably display the data in the respective display cards of the two operating systems.
In the above scheme, the intelligent control module and the nonvolatile memory are arranged between the first operating system and the second operating system, so that the first operating system can read the EDID from the nonvolatile memory when being started, the display card of the first operating system can work, and after the second operating system is started, the DDC and the HPD of the first operating system are respectively conducted with the DDC and the HPD of the second operating system by sending control signals to the intelligent control module, the second operating system can normally receive the display data sent by the first operating system and forward the display data to the display screen for displaying, and therefore the display screen can rapidly and stably display the data in the respective display cards of the two operating systems.
In order to better understand the above technical solutions, the following detailed description of the technical solutions of the present invention is made by using the accompanying drawings and specific embodiments, and it should be understood that the specific features of the embodiments and the embodiments of the present invention are detailed descriptions of the technical solutions of the present invention, and not limiting the technical solutions of the present invention, and the technical features of the embodiments and the embodiments of the present invention may be combined with each other without conflict.
In order to enable those skilled in the art to fully understand the technical solutions of the present application, a brief description will now be made of knowledge related to the present solutions:
please refer to fig. 1, which is a schematic diagram of an HDMI system.
In the system, a high-definition multimedia interface (High Definition Multimedia Interface, HDMI) transmitting end transmits video data and audio data to an HDMI receiving end through an HDMI interface, so that the HDMI receiving end transmits a display screen to display.
The HDMI interface includes: the 4 minimized differential signaling technology (Time Minimized Differential Signal, TMDS) channels are primarily used to transmit data, one display data channel (Display Data Channel, DDC) and the consumer electronics control (Consumer Electronics Control, CEC) line.
DDC is a bus standard whose basic function is to transmit electronic profile information of the display, such as receivable line frequency field frequency range, manufacturer, date of manufacture, product serial number, product model number, standard display mode and its parameters, DDC standard class supported, version information of EDID, etc. The high version of the DDC standard bus may also allow the host computer to directly adjust basic parameters of the display such as brightness, contrast, magnitude of line field amplitude, line field center position, color temperature parameters, etc. The transmitting end can read the EDID data in the receiving end through the DDC channel, acquire the information of the receiving end, confirm the setting function displayed by the receiving end and decide in what format to transmit the audio and video data with the receiving end.
The CEC channel is an optional channel, and through the CEC channel, advanced control functions among some audio and video devices, such as supporting two-way communication between a video source and a digital television, and realizing functions of single key pressing, simultaneous starting, automatic power-on, automatic signal routing, remote control and the like, can be realized.
The HDMI also comprises a Hot Plug Detect (HPD) pin, the HDMI receiving end can Detect whether an HDMI transmitting end is accessed through the HPD, and determine whether the HDMI transmitting end initiates reading of external display device identification data (Extended Display Identification Data, EDID) or not, and the HDMI receiving end is used as a basis for whether the HDMI transmitting end starts transmitting TMDS signals or not.
The inventor finds that when the HDMI is applied to the display device with the dual system for teaching, the interaction handshake between the two systems fails due to inconsistent starting time of the two systems, so that the display device often cannot display the display data sent by the HDMI transmitting end, and a display screen in the display device cannot stably and rapidly display the data required to be displayed by the dual system.
To solve this technical problem, the inventors have adopted the following technical scheme.
Referring to fig. 2, an embodiment of the present invention provides a dual-system display device, which includes a first operating system 11 and a second operating system 12, and a display screen 13, and further includes:
the nonvolatile memory 14 is connected with the intelligent control module 15 and is used for storing the extended display identification data EDID of the display screen 13.
The intelligent control module 15 is connected to the first operating system 11 and the second operating system 12, and is configured to read EDID from the nonvolatile memory 14 when the first operating system 11 is turned on, and after receiving a control signal sent by the second operating system 12, conduct a display data channel DDC and a hot plug HPD of the first operating system 11 with a DDC and a HPD of the second operating system 12 (illustrated by dashed lines in fig. 2) respectively, so that the second operating system 12 forwards display data sent by the first operating system 11 to the display screen 13.
In the embodiment provided by the invention, the first operating system 11 is used as an HDMI transmitting end, and the second operating system 12 is used as an HDMI receiving end.
The first operating system 11 may be a Windows system, which runs on an OPS when the first operating system 11 is a Windows system. Because the intelligent control module 15 conducts the HPD pin corresponding to the Window system with the high level terminal in the initial state, and conducts the DDC pin corresponding to the Window system with the nonvolatile memory 14, after the Windows system is started, the DDC channel corresponding to the Windows system can read the EDID from the nonvolatile memory 14, and after the read is successful, the TMDS signal transmitting circuit in the display card corresponding to the Windows system starts to work, so that the Windows system normally and directly outputs the TMDS signal to the second operating system 12 (HDMI receiving terminal), and the phenomena of abnormal display image and sound, etc. caused by the failure of the interactive handshake due to the lack of the completion of the second operating system 12 are avoided.
When the first operating system 11 is a Windows system, the second operating system 12 may be an android system, after the android system is started, a control signal is sent to the intelligent control module 15, so that the DDC and the hot plug HPD of the Windows system are respectively switched to the DDC and the HPD of the android system (which is equivalent to performing hot plug on the HDMI of the Windows system once), and thus the connection mode of the transmitting end and the receiving end of the conventional HDMI is switched, so that the Windows system can normally read the EDID of the android system after hot plug, and thus the TMDS signal transmitting circuit in the graphics card corresponding to the Windows system starts to work, and the android system receives the TMDS signal and decodes and then transmits the TMDS signal to the display screen 13, so that the display screen 13 can quickly and stably display the data to be displayed by the dual systems.
The first operating system 11 and the second operating system 12 are different systems. The first operating system 11 is not limited to the Windows system, and the second operation is not limited to the android system, but may be another operating system such as the IOS system (Input Output System), the hong-mo system, or the like.
Referring to fig. 3, a schematic structural diagram of an intelligent control module according to an embodiment of the present invention is shown, where the intelligent control module 15 includes:
the first switch 151, the first end 1511 of the first switch 151 is connected to the HPD pin of the first operating system 11, the second end 1512 of the first switch 151 is connected to the high level end, and the third end 1513 of the first switch 151 is connected to the HPD pin of the second operating system 12; in an initial state of the first switch 151, the first end 1511 and the second end 1512 of the first switch 151 are turned on, and after receiving the control signal, the first end 1511 and the third end 1513 of the first switch 151 are turned on. Fig. 4 is a schematic connection diagram of an intelligent control module in an initial state according to an embodiment of the present invention.
The first end 1521 of the second switch 152 is connected to a pin corresponding to the DDC of the first operating system 11, the second end 1522 of the second switch 152 is connected to the nonvolatile memory 14, and the third end 1523 of the second switch 152 is connected to a pin corresponding to the DDC of the second operating system 12; in the initial state of the second switch 152, the first end 1521 and the second end 1522 of the second switch 152 are turned on, and after receiving the control signal, the second end 1522 and the third end 1523 of the second switch 152 are turned on. Fig. 5 is a schematic connection diagram of an intelligent control module according to an embodiment of the present invention after receiving a control signal.
The control signal terminal 153 is configured to receive a control signal of the second operating system 12.
In the initial state, the first switch 151 connects the HPD pin of the first operating system 11 with the high level terminal, and the second switch 152 connects the pin corresponding to the DDC of the first operating system 11 with the nonvolatile memory 14 storing the EDID, so that the EDID can be read by the first operating system 11 when the first operating system is started, and the graphics card of the first operating system 11 can work normally. After the intelligent control module 15 receives the control signal sent by the second operating system 12, the first switch 151 and the second switch 152 switch the HPD and the DDC of the first operating system 11 to the HPD and the DDC of the second operating system 12 respectively, so that normal HDMI communication can be established between the first operating system 11 and the second operating system 12, and the second operating system 12 can receive the display data sent by the first operating system 11 and forward the display data to the display screen 13, so that the display screen 13 can quickly and stably display the data to be displayed by the dual systems.
In the embodiment provided in the present invention, the first switch 151 and the second switch 152 may be relays, transistors, thyristors, and the like, which are not particularly limited.
It should be noted that, the control terminals of the first switch 151 and the second switch 152 are connected to the control signal terminal 153, that is, the first switch 151 and the second switch 152 are controlled by the control signal, and they are synchronously switched.
In the embodiment provided by the present invention, the control signal is sent to the intelligent control module 15 by the second operating system 12 after the second operating system 12 is started.
In the embodiment provided in the present invention, the EDID data in the nonvolatile memory 14 may be data that is burned into it in advance, or may be data that is written by the second operating system 12 after the initialization of the second operating system 12 is completed.
Since the nonvolatile memory 14 is selected to store the EDID, the EDID can be permanently stored therein by writing the EDID into the nonvolatile memory 14 only once.
In the embodiment provided by the present invention, the nonvolatile memory 14 includes: read-only memory (ROM), programmable Read-only memory (PROM), electrically rewritable Read-only memory (Electrically alterable Read only memory, earm), erasable programmable Read-only memory (Erasable programmable Read only memory, EPROM), electrically erasable programmable Read-only memory (Electrically erasable programmable Read only memory, EEPROM), flash memory (Flash memory).
In an embodiment provided by the present invention, the display device further includes:
after the first operating system 11 is started, if the first operating system 11 does not read the EDID, the first operating system 11 sends out alarm information.
By sending out the alarm information when the first operating system 11 does not read the EDID, the user can timely learn the reason that the display screen 13 cannot normally display, so that the fault can be timely and pointedly removed, the waiting time of the user is reduced, and the working efficiency is improved.
For example, the first operating system 11 may issue alarm information, which may be voice prompt information, indication light indication information, or the like, without limitation, when the first operating system 11 fails to read EDID due to the failure of the nonvolatile memory 14.
If the first operating system 11 does not read the EDID data, the first operating system 11 may also read the data from the historical EDID stored in the own system in advance, so that the graphics card of the first operating system 11 can work normally.
In the embodiment provided by the invention, the display device can be any one of a computer, a television, an interactive tablet and a display device.
Based on the same inventive concept, in one embodiment of the present invention, there is provided a dual system display system including:
and after the first operating system is started, the first operating system reads the extended display identification data EDID from the nonvolatile memory, so that the display card of the first operating system starts to work.
After the second operating system is started, a control signal is sent to the intelligent control module, so that a display data channel DDC and a hot plug HPD of the first operating system are respectively switched to the DDC and the HPD of the second operating system, and the second operating system forwards display data of the first operating system to the display screen.
The intelligent control module is connected with the first operating system and the second operating system and is used for reading the EDID from the nonvolatile memory when the first operating system is started, and after receiving the control signal, the DDC and the HPD of the first operating system are respectively conducted with the DDC and the HPD of the second operating system.
The display screen is connected with the second operating system and used for displaying data in the first operating system or the second operating system display cards sent by the second operating system.
The structure of the specific intelligent control module can be referred to the description of the previous device part, and will not be repeated here.
In the embodiment provided by the invention, the intelligent control module and the nonvolatile memory are arranged between the first operating system and the second operating system, so that the first operating system can read the EDID from the nonvolatile memory when being started, the display card of the first operating system can work, and after the second operating system is started, the DDC and the HPD of the first operating system are respectively conducted with the DDC and the HPD of the second operating system by sending control signals to the intelligent control module, so that the second operating system can normally receive the display data sent by the first operating system and forward the display data to the display screen for display, and the display screen can rapidly and stably display the data in the respective display cards of the two operating systems.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the invention may take the form of a computer program product on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. A dual system display device, said display device comprising a first operating system and a second operating system, and a display screen, further comprising:
the nonvolatile memory is connected with the intelligent control module and used for storing the extended display identification data EDID of the display screen;
the intelligent control module is connected with the first operating system and the second operating system and is used for reading the EDID from the nonvolatile memory when the first operating system is started, and after receiving a control signal sent by the second operating system, conducting a display data channel DDC and a hot plug HPD of the first operating system with the DDC and the HPD of the second operating system respectively so that the second operating system forwards display data sent by the first operating system to the display screen;
the intelligent control module includes:
the first end of the first change-over switch is connected with the HPD pin of the first operating system, the second end of the first change-over switch is connected with the high-level end, and the third end of the first change-over switch is connected with the HPD pin of the second operating system; the first end and the second end of the first change-over switch are conducted in the initial state of the first change-over switch, and the first end and the third end of the first change-over switch are conducted after the control signal is received;
the first end of the second change-over switch is connected with a pin corresponding to the DDC of the first operating system, the second end of the second change-over switch is connected with the nonvolatile memory, and the third end of the second change-over switch is connected with a pin corresponding to the DDC of the second operating system; the first end and the second end of the second change-over switch are conducted in the initial state of the second change-over switch, and the second end and the third end of the second change-over switch are conducted after the control signal is received;
and the control signal end is used for receiving the control signal.
2. The display device of claim 1, wherein the control signal is sent by the second operating system to the intelligent control module after the second operating system is started.
3. The display device according to claim 1, wherein the EDID data in the nonvolatile memory is pre-burned data.
4. The display device according to claim 1, wherein EDID data in the nonvolatile memory is data written after the second operating system initialization is completed.
5. The display device according to claim 3 or 4, wherein the nonvolatile memory includes: read-only memory ROM, programmable read-only memory PROM, electrically rewritable read-only memory EAROM, erasable programmable read-only memory EPROM, electrically erasable programmable read-only memory EEPROM, and Flash memory.
6. The display device according to claim 1, further comprising:
after the first operating system is started, if the first operating system does not read the EDID, the first operating system sends out alarm information.
7. The display device of claim 6, wherein if the EDID data is not read by the first operating system, further comprising:
the first operating system reads historical EDID data from the first operating system.
8. The display device of any one of claims 1 or 3-4 or 6-7, wherein the display device is any one of a computer, a television, an interactive tablet, a display apparatus.
9. The display device of any one of claims 1 or 3-4 or 6-7, wherein the first operating system is a Windows system and the second operating system is an android system.
10. A dual system display system, comprising:
the method comprises the steps that after the first operating system is started, extended display identification data EDID is read from a nonvolatile memory, so that a display card of the first operating system starts to work;
after the second operating system is started, a control signal is sent to an intelligent control module, so that a display data channel DDC and a hot plug HPD of the first operating system are respectively switched to the DDC and the HPD of the second operating system, and the second operating system forwards display data of the first operating system to a display screen;
the intelligent control module is connected with the first operating system and the second operating system and is used for reading the EDID from the nonvolatile memory when the first operating system is started, and after receiving the control signal, conducting the DDC and the HPD of the first operating system with the DDC and the HPD of the second operating system respectively;
the display screen is connected with the second operating system and used for displaying data in the first operating system or the second operating system respectively display cards sent by the second operating system;
wherein, intelligent control module includes:
the first end of the first change-over switch is connected with the HPD pin of the first operating system, the second end of the first change-over switch is connected with the high-level end, and the third end of the first change-over switch is connected with the HPD pin of the second operating system; the first end and the second end of the first change-over switch are conducted in the initial state of the first change-over switch, and the first end and the third end of the first change-over switch are conducted after the control signal is received;
the first end of the second change-over switch is connected with a pin corresponding to the DDC of the first operating system, the second end of the second change-over switch is connected with the nonvolatile memory, and the third end of the second change-over switch is connected with a pin corresponding to the DDC of the second operating system; the first end and the second end of the second change-over switch are conducted in the initial state of the second change-over switch, and the second end and the third end of the second change-over switch are conducted after the control signal is received;
and the control signal end is used for receiving the control signal.
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| CN114697737B (en) * | 2020-12-29 | 2024-02-06 | 深圳Tcl新技术有限公司 | Display data configuration method, device, display equipment and storage medium |
| CN113590072A (en) * | 2021-08-11 | 2021-11-02 | 深圳市皓丽智能科技有限公司 | Split screen display method and device |
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