CN109828733A - A kind of method that multiple display terminals are independently shown calculates equipment - Google Patents
A kind of method that multiple display terminals are independently shown calculates equipment Download PDFInfo
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- CN109828733A CN109828733A CN201910012964.0A CN201910012964A CN109828733A CN 109828733 A CN109828733 A CN 109828733A CN 201910012964 A CN201910012964 A CN 201910012964A CN 109828733 A CN109828733 A CN 109828733A
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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
- G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
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Abstract
The invention discloses a kind of method that multiple display terminals are independently shown, equipment is calculated, suitable for executing in calculating equipment, method is comprising steps of initialization multiple groups property parameters, each group of property parameters correspond to a display port；The connection status of multiple display ports is disposed as successful connection；And when detecting that display port has display terminal access, the property parameters of corresponding display port are updated to the property parameters of the display terminal of access.
Description
Technical field
The present invention relates to computer software technical field more particularly to a kind of sides that multiple display terminals are independently shown
Method calculates equipment.
Background technique
Currently, in actual use process, computer is using double screen or connects multiple screens and shows different interfaces
Scene is more and more.For example, the complicated industrial control equipment of certain large sizes, needs more people while coordinated manipulation to control equipment
Operation, thus needs multiple display control terminals, screen A, screen B, screen C...... is as shown in Figure 1, each operator
There is the aobvious control interface of independent operation of oneself, and can simultaneously or independently operate the different function of equipment.It is same in multiple operators
When operation in the case where, should guarantee the interactivity of software interface application operation, guarantee that display equipment is independent of each other again.
In addition in actual operation, it is possible to have the demand that mode switches mutually between multiple screens.Such as screen A and
Two screens of B are mode of extension now, it is now desired to B be changed to the mirror image of A, during B interface operation, need the interface A not
There can be any variation, or the variation of B can not be perceived, as shown in Fig. 2, this just needs video driver support to be completely independent switching skill
Art scheme.
However, current existing equipment display control is all to intersect to carry out or interact, such as close one of them and show
After showing terminal, system drive can detect that display equipment disconnects so that the adjustment at interface is carried out, on the screen that will be switched off or close
Image be compressed on other normal screens automatically, thus will affect other terminal interfaces observation operation.The reason is that, general
Video driver can automatic identification to the state of external display terminal, realize that multiple screens are automatically adjusted or adapted to.
In addition, in existing video driver video memory space can be dynamically distributed according to the connection access state of display screen
Size, when external display terminal's state changes, driving can dynamically go to the video memory space of application screen and switch
For default mode, the configuration carried out again to driving is needed to lead including reinitializing the processing to change with connection status
It causes in handoff procedure, it may appear that the phenomenon that screen flicker.It is all during switching by many experiments and test
Screen all can blank screen flash, substantially 2~3 seconds time, then handover operation success, can thus influence multiple screens simultaneously
Curtain interface operation and observation, each display terminal can not achieve independent operating.
Summary of the invention
For this purpose, the present invention provides a kind of method that multiple display terminals are independently shown, calculates equipment, to try hard to solve
Or at least alleviate at least one existing problem above.
According to an aspect of an embodiment of the present invention, a kind of method that multiple display terminals are independently shown is provided,
Suitable for executing in calculating equipment, method includes:
Multiple groups property parameters are initialized, each group of property parameters correspond to a display port；
The connection status of multiple display ports is disposed as successful connection；And
When detecting that display port has display terminal access, the property parameters of corresponding display port are updated to access
The property parameters of display terminal.
Optionally, method further include:
Configure at least one set of display parameters, and distribution at least one piece of video memory region；
The target display parameters of display terminal are determined from least one set of display parameters, and from least one piece of video memory region
The target video memory region of middle determining display terminal；
According to target display parameters and target video memory region, image information is shown on display terminal.
Optionally, video memory region is the specified video memory region divided in advance.
Optionally, the size in video memory region is determined according to the display resolution of preset display terminal.
Optionally, the number in video memory region is determined according to the display pattern of preset display terminal.
Optionally, the display pattern of display terminal, comprising:
Mode of extension and/or mirror image pattern.
Optionally, method further comprises the steps of:
Redefine the target display parameters of display terminal from least one set of display parameters, and from least one piece of video memory
The target video memory region of display terminal is redefined in region.
Optionally, the property parameters, comprising:
Extending display identification data EDID and display output port information.
Other side according to an embodiment of the present invention provides a kind of readable storage medium storing program for executing, is suitable for storage one or more
A program, one or more programs are configured as executing multiple display terminal difference according to an embodiment of the present invention by calculating equipment
The method independently shown.
According to an embodiment of the present invention there are one aspects, provide a kind of calculating equipment, comprising: one or more processing
Device；Memory；And one or more programs, wherein one or more programs are stored in memory and are configured as by one
Or multiple processors execute the method that multiple display terminals according to an embodiment of the present invention are independently shown.
The method that multiple display terminals according to an embodiment of the present invention are independently shown passes through initialization multiple groups attribute ginseng
It counts and the connection status of multiple display ports is disposed as successful connection, so that having always multiple for upper layer application
Display terminal is in successful connection state, thus when the practical connection status of display terminal changes, each display screen it is defeated
Corresponding change will not occur for frame out, realize the independent display of each display terminal.
Detailed description of the invention
To the accomplishment of the foregoing and related purposes, certain illustrative sides are described herein in conjunction with following description and drawings
Face, these aspects indicate the various modes that can practice principles disclosed herein, and all aspects and its equivalent aspect
It is intended to fall in the range of theme claimed.Read following detailed description in conjunction with the accompanying drawings, the disclosure it is above-mentioned
And other purposes, feature and advantage will be apparent.Throughout the disclosure, identical appended drawing reference generally refers to identical
Component or element.
Fig. 1 is exemplarily illustrated the operative scenario that multidisplay system shows different content；
Fig. 2, which is exemplarily illustrated a display terminal, does not influence the operative scenario of another display terminal in switch mode；
Fig. 3 is exemplarily illustrated the structural block diagram for calculating equipment 100；
Fig. 4 is exemplarily illustrated 200 that multiple display terminals according to an embodiment of the invention independently show
Flow chart；
Fig. 5 is exemplarily illustrated display terminal configuration structure according to an embodiment of the invention；
Fig. 6 is exemplarily illustrated display renderings according to an embodiment of the invention；
Fig. 7 is exemplarily illustrated the display renderings of another embodiment according to the present invention.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.
Fig. 3 is to be arranged as the example calculations of the method for realizing that multiple display terminals according to the present invention are independently shown to set
Standby 100 block diagram.In basic configuration 102, calculates equipment 100 and typically comprise system storage 106 and one or more
A processor 104.Memory bus 108 can be used for the communication between processor 104 and system storage 106.
Depending on desired configuration, processor 104 can be any kind of processing, including but not limited to: microprocessor
((μ P), microcontroller (μ C), digital information processor (DSP) or any combination of them.Processor 104 may include all
Cache, processor core such as one or more rank of on-chip cache 110 and second level cache 112 etc
114 and register 116.Exemplary processor core 114 may include arithmetic and logical unit (ALU), floating-point unit (FPU),
Digital signal processing core (DSP core) or any combination of them.Exemplary Memory Controller 118 can be with processor
104 are used together, or in some implementations, and Memory Controller 118 can be an interior section of processor 104.
Depending on desired configuration, system storage 106 can be any type of memory, including but not limited to: easily
The property lost memory (RAM), nonvolatile memory (ROM, flash memory etc.) or any combination of them.System storage
Device 106 may include operating system 120, one or more program 122 and program data 124.In some embodiments,
Program 122 can be configured as to be referred to by one or more processor 104 using the execution of program data 124 on an operating system
It enables.
Calculating equipment 100 can also include facilitating from various interface equipments (for example, output equipment 142, Peripheral Interface
144 and communication equipment 146) to basic configuration 102 via the communication of bus/interface controller 130 interface bus 140.Example
Output equipment 142 include graphics processing unit 148 and audio treatment unit 150.They can be configured as facilitate via
One or more port A/V 152 is communicated with the various external equipments of such as display terminal or loudspeaker etc.Example
Peripheral Interface 144 may include serial interface controller 154 and parallel interface controller 156, they, which can be configured as, helps
In via one or more port I/O 158 and such as input equipment (for example, keyboard, mouse, pen, voice-input device, touching
Touch input equipment) or the external equipment of other peripheral hardwares (such as printer, scanner etc.) etc communicated.Exemplary communication
Equipment 146 may include network controller 160, can be arranged to convenient for via one or more communication port 164 with
One or more other calculating communications of equipment 162 by network communication link.
Network communication link can be an example of communication media.Communication media can be usually presented as in such as carrier wave
Or computer readable instructions, data structure, program module in the modulated data signal of other transmission mechanisms etc, and can
To include any information delivery media." modulated data signal " can such signal, one in its data set or more
It is a or it change can the mode of encoded information in the signal carry out.As unrestricted example, communication media can be with
Wired medium including such as cable network or private line network etc, and it is such as sound, radio frequency (RF), microwave, infrared
(IR) the various wireless mediums or including other wireless mediums.Term computer-readable medium used herein may include depositing
Both storage media and communication media.
Calculating equipment 100 can be implemented as a part of portable (or mobile) electronic equipment of small size, these electronics are set
The standby such as cellular phone, personal digital assistant (PDA), personal media player device, wireless network browsing apparatus, a of can be
People's helmet, application specific equipment or may include any of the above function mixing apparatus.Calculating equipment 100 can be with
Be embodied as include desktop computer and notebook computer configuration personal computer.
Wherein, the one or more programs 122 for calculating equipment 100 include for executing multiple displays according to the present invention eventually
Hold the instruction of the method independently shown.
Fig. 4 illustrates the method 200 that multiple display terminals according to an embodiment of the invention are independently shown
Flow chart.As shown in figure 4, the method 200 that multiple display terminals are independently shown starts from step S201.
In step S201, multiple groups property parameters are initialized, each group of property parameters correspond to a display port.Display end
Mouth is the port for display terminal and calculating equipment to be attached, such as can be the port HDMI, VGA, DVI etc., but
It is without being limited thereto.It is calculated in equipment it will be understood by those skilled in the art that display port can be fixedly installed on, it can also be by turning
It connects the equipment such as device, expander and Dynamic expansion is carried out to the display port for calculating equipment.
According to embodiments of the present invention, property parameters refer to the property parameters of display terminal, and the extension including display terminal is shown
Mark data (Extended Display Identification Data, EDID) and display output port information, show defeated
Exit port information includes that DP interface configuration data (DisplayPort Configuration Data, DPCD) or fine definition are more
Media interface (High Definition Multimedia Port, HDMI Port) value etc..Due to showing in init state
Show that the connection status of terminal also in unknown state, needs to load the property parameters of the display terminal of default.
Then, in step S202, the connection status of multiple display ports is disposed as successful connection.If will display
The true connection status of terminal is reported in real time to system interface layer, (is connected originally when the connection status of display terminal changes
Successful display terminal disconnects or the display terminal of script connection failure restores connection) when, system layer can be current connection
Successful display terminal redistributes video memory, configuration video driver attribute, re-starts initialization etc., this can influence more simultaneously
The display picture of a display terminal, causes each display terminal can not independent operating.Therefore, in an embodiment of the present invention,
The connection status of multiple display ports is disposed as successful connection, so that upper-level system interface thinks that display terminal keeps normal
Connection, and practical upper port has been possible to display terminal access, it is also possible to it is accessed without display terminal.The technology realizes each
The independent operating of display terminal, is independent of each other each other.
Then, in step S203, when detecting that display port has display terminal access, by the category of corresponding display port
Property the parameter display terminal that is updated to access property parameters realize normal aobvious to complete the correct configuration of display terminal
Show function.
According to an embodiment of the invention, the above method further comprises the steps of: at least one set of display parameters of configuration, and distribution is extremely
Few one piece of video memory region；Determine the target display parameters of display terminal from least one set of display parameters, and from described
The target video memory region of display terminal is determined at least one piece of video memory region；It is aobvious according to the target display parameters and the target
Region is deposited, shows image information on the display terminal.Wherein, display parameters refer to crtc parameter, including line frequency, frame frequency, row
Flyback time, picture flyback time etc..
In the embodiment of the present invention, the independence of each display terminal is realized by configuring crtc, property parameters and video memory region
Display function, example is referring to Fig. 5.
In the embodiment shown in fig. 5, in driving layer, three independent display port (Displayport are initialized
Output) corresponding display parameters (crtc0/1/2) and video memory region A, B, C, each display port correspond to a display
Terminal (screen-0/1/2).Since in init state, the connection status of display terminal needs pre- also in unknown state
First set the display terminal property parameters of a default, such as edid, dpcd or hdmi port value of display terminal.Preferentially make
With the display terminal attribute read, the attribute of default is used if reading is unsuccessful.But terminal is being reported to upper-level system
When connection status, need for state to be all set to the state of successful connection.
According to one embodiment of present invention, video memory region is the specified video memory region divided in advance, wherein video memory region
Size determine that the number in video memory region is according to the aobvious of preset display terminal according to the display resolution of preset display terminal
Show that mode determines.According to scheduled demand, the considerations of screen accesses number and resolution sizes is integrated, in kernel-driven in advance
Distribute multiple independent display area video memory spaces.For example, demand is 3 independent interfaces, resolution ratio is 1280x1024@
32bit, then calculating each screen and occupying video memory space is 5MB, needs to allocate in advance 3 independent video memory regions (A, B, C),
As shown in Figure 5.
In the specific implementation process, the number in video memory region is not necessarily equal with the number of display terminal, for example, part is aobvious
Show that terminal profile uses identical mirror image pattern to be fixed, then the part display terminal does not need additionally to divide video memory region.It can
Selection of land, according to the display pattern of display terminal: mode of extension and/or mirror image pattern determine the number in video memory region.
In addition, dividing video memory region in advance, and it is allocated to display terminal, it is aobvious to be able to solve provisional application in initialization procedure
It deposits region and the blank screen problem caused by configuration process such as reinitializes.
According to one embodiment of present invention, when needing replacing display terminal in display system operational process, from institute
State the target display parameters that display terminal is redefined at least one set of display parameters, and from least one piece of video memory region
In redefine the target video memory region of display terminal.It after disconnecting display terminal and accesses before new display terminal, drives
The connection status that trend system layer feeds back display terminal always is successful connection；After new display terminal access, driving write-in
The property parameters of new display terminal simultaneously distribute video memory region, do not need to be initialized for new display terminal again
Work, does not need to apply for video memory region again yet, can avoid the appearance of blank screen phenomenon.
According to one embodiment of present invention, when the display mould for needing to modify display terminal in display system operational process
When formula, the video memory region of configuration can be directly modified.I.e. in configuration information, by the port mapping of display terminal connection to corresponding
The variation of display pattern is realized in video memory region.Aforesaid operations process will not generate any influence to other display terminals, thus real
The independent operation of each display terminal is showed.
Further to illustrate the present invention, in conjunction with Fig. 5, it is as follows to provide Project Realization mode example:
It is configured by parameter in crtc structure attribute, the control register that final argument can be written to display driving is worked as
In.It is configurable in the driving of xserver:
Crtc0- > vmem_start=0M/5M/10M；
Output- > crtc=crtc0；
It wherein, can be free of one another group between video memory region A/B/C and CRTC [0/1/2] and [0/1/2] three group of screen
It closes.
Assuming that above-mentioned video memory region, CRTC and screen is matched one by one according to sequence from left to right, display effect is such as
Shown in Fig. 6；So, when being adjusted to following configuration combination, display effect is as shown in Figure 7:
Display terminal screen0, using the configuration of CRTC-1, video memory region is C；
Display terminal screen1, using the configuration of CRTC-0, video memory region is B；
Display terminal screen2, using the configuration of CRTC-2, video memory region is C.
In an experiment, it completes with postponing, even if turning off some screen or removing some screen, the display mould of three screens
Formula state still still remains unchanged.It is checked using xrandr order, the state of three screens of display remains unchanged, and three aobvious
The connection status for showing terminal is all connected.By cycle power, three screens are opened again alternatively, closing, screen interface begins
It remains operational eventually normally, application interface also can normally start.
The present invention provides a kind of method that multiple display terminals are independently shown, it is ensured that can carry out between multiple screens each
It from independent operation, is independent of each other, and not to other display terminals during single display terminal switches display pattern
Generate the influence of blank screen.Also, in the case where display terminal does not connect, it is driven through to application feedback display terminal connection
Successful state, to ensure the normal operation of system application.
It should be appreciated that various technologies described herein are realized together in combination with hardware or software or their combination.From
And some aspects or part of the process and apparatus of the present invention or the process and apparatus of the present invention can take the tangible matchmaker of insertion
It is situated between, such as the program code in floppy disk, CD-ROM, hard disk drive or other any machine readable storage mediums (refers to
Enable) form, wherein when program is loaded into the machine of such as computer etc, and when being executed by the machine, which becomes real
Trample equipment of the invention.
In the case where program code executes on programmable computers, calculates equipment and generally comprise processor, processor
Readable storage medium (including volatile and non-volatile memory and or memory element), at least one input unit, and extremely
A few output device.Wherein, memory is configured for storage program code；Processor is configured for according to the memory
Instruction in the program code of middle storage executes various methods of the invention.
By way of example and not limitation, computer-readable medium includes computer storage media and communication media.It calculates
Machine readable medium includes computer storage media and communication media.Computer storage medium storage such as computer-readable instruction,
The information such as data structure, program module or other data.Communication media is generally modulated with carrier wave or other transmission mechanisms etc.
Data-signal processed passes to embody computer readable instructions, data structure, program module or other data including any information
Pass medium.Above any combination is also included within the scope of computer-readable medium.
It should be appreciated that in order to simplify the disclosure and help to understand one or more of the various inventive aspects, it is right above
In the description of exemplary embodiment of the present invention, each feature of the invention be grouped together into sometimes single embodiment, figure or
In person's descriptions thereof.However, the disclosed method should not be interpreted as reflecting the following intention: i.e. claimed hair
Bright requirement is than feature more features expressly recited in each claim.More precisely, as the following claims
As book reflects, inventive aspect is all features less than single embodiment disclosed above.Therefore, it then follows specific real
Thus the claims for applying mode are expressly incorporated in the specific embodiment, wherein each claim itself is used as this hair
Bright separate embodiments.
Those skilled in the art should understand that the module of the equipment in example disclosed herein or unit or groups
Part can be arranged in equipment as depicted in this embodiment, or alternatively can be positioned at and the equipment in the example
In different one or more equipment.Module in aforementioned exemplary can be combined into a module or furthermore be segmented into multiple
Submodule.
Those skilled in the art will understand that can be carried out adaptively to the module in the equipment in embodiment
Change and they are arranged in one or more devices different from this embodiment.It can be the module or list in embodiment
Member or component are combined into a module or unit or component, and furthermore they can be divided into multiple submodule or subelement or
Sub-component.Other than such feature and/or at least some of process or unit exclude each other, it can use any
Combination is to all features disclosed in this specification (including adjoint claim, abstract and attached drawing) and so disclosed
All process or units of what method or apparatus are combined.Unless expressly stated otherwise, this specification is (including adjoint power
Benefit require, abstract and attached drawing) disclosed in each feature can carry out generation with an alternative feature that provides the same, equivalent, or similar purpose
It replaces.
In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments
In included certain features rather than other feature, but the combination of the feature of different embodiments mean it is of the invention
Within the scope of and form different embodiments.For example, in the following claims, embodiment claimed is appointed
Meaning one of can in any combination mode come using.
In addition, be described as herein can be by the processor of computer system or by executing by some in the embodiment
The combination of method or method element that other devices of the function are implemented.Therefore, have for implementing the method or method
The processor of the necessary instruction of element forms the device for implementing this method or method element.In addition, Installation practice
Element described in this is the example of following device: the device be used for implement as in order to implement the purpose of the invention element performed by
Function.
As used in this, unless specifically stated, come using ordinal number " first ", " second ", " third " etc.
Description plain objects, which are merely representative of, is related to the different instances of similar object, and is not intended to imply that the object being described in this way must
Must have the time it is upper, spatially, sequence aspect or given sequence in any other manner.
Although the embodiment according to limited quantity describes the present invention, above description, the art are benefited from
It is interior it is clear for the skilled person that in the scope of the present invention thus described, it can be envisaged that other embodiments.Additionally, it should be noted that
Language used in this specification primarily to readable and introduction purpose and select, rather than in order to explain or limit
Determine subject of the present invention and selects.Therefore, without departing from the scope and spirit of the appended claims, for this
Many modifications and changes are obvious for the those of ordinary skill of technical field.For the scope of the present invention, to this
Invent done disclosure be it is illustrative and not restrictive, it is intended that the scope of the present invention be defined by the claims appended hereto.
Claims (10)
1. a kind of method that multiple display terminals are independently shown, suitable for being executed in calculating equipment, which comprises
Multiple groups property parameters are initialized, each group of property parameters correspond to a display port；
The connection status of multiple display ports is disposed as successful connection；And
When detecting that display port has display terminal access, the property parameters of corresponding display port are updated to the display of access
The property parameters of terminal.
2. the method as described in claim 1, further includes:
Configure at least one set of display parameters, and distribution at least one piece of video memory region；
Determine the target display parameters of display terminal from least one set of display parameters, and from least one piece of video memory
The target video memory region of display terminal is determined in region；
According to the target display parameters and target video memory region, image information is shown on the display terminal.
3. method according to claim 2, wherein the video memory region is the specified video memory region divided in advance.
4. method as claimed in claim 3, wherein the size in the video memory region is according to the display of preset display terminal point
Resolution determines.
5. method as claimed in claim 3, wherein the number in the video memory region is according to the display mould of preset display terminal
Formula determines.
6. method as claimed in claim 5, wherein the display pattern of the display terminal, comprising:
Mode of extension and/or mirror image pattern.
7. method according to claim 2, wherein further comprise the steps of:
The target display parameters of display terminal are redefined from least one set of display parameters, and from described at least one piece
The target video memory region of display terminal is redefined in video memory region.
8. the method for claim 1, wherein property parameters, comprising:
Extending display identification data EDID and display output port information.
9. a kind of readable storage medium storing program for executing, is suitable for storing one or more programs, one or more of programs are configured as by counting
It calculates equipment and executes the method independently shown such as multiple display terminals of any of claims 1-8.
10. a kind of calculating equipment, comprising:
One or more processors；
Memory；And
One or more programs, wherein one or more of programs are stored in the memory and are configured as by described one
A or multiple processors execute the method independently shown such as multiple display terminals of any of claims 1-8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910012964.0A CN109828733B (en) | 2019-01-07 | 2019-01-07 | Method and computing device for respectively and independently displaying multiple display terminals |
| CN202210023437.1A CN114546312B (en) | 2019-01-07 | 2019-01-07 | Method and computing device for respectively and independently displaying multiple display terminals |
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| CN201910012964.0A CN109828733B (en) | 2019-01-07 | 2019-01-07 | Method and computing device for respectively and independently displaying multiple display terminals |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111596876A (en) * | 2020-04-28 | 2020-08-28 | 维沃移动通信有限公司 | Information display method and device, electronic equipment and storage medium |
| CN113347382A (en) * | 2021-05-26 | 2021-09-03 | 随锐科技集团股份有限公司 | Display method, embedded terminal and computer readable storage medium |
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| CN109828733B (en) | 2022-03-29 |
| CN114546312B (en) | 2023-09-12 |
| CN114546312A (en) | 2022-05-27 |
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