CN110456994A - A kind of remote display system and method - Google Patents
A kind of remote display system and method Download PDFInfo
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- CN110456994A CN110456994A CN201910654391.1A CN201910654391A CN110456994A CN 110456994 A CN110456994 A CN 110456994A CN 201910654391 A CN201910654391 A CN 201910654391A CN 110456994 A CN110456994 A CN 110456994A
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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
- G06F3/1454—Digital output to display device ; Cooperation and interconnection of the display device with other functional units involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
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Abstract
A kind of remote display system, including, the first display system, the second display system, first display system, it stores the display data of application rendering according to display layer, and the physical address of each display layer parsed and layer display control information are sent jointly to second display system；The physical address map of each display layer received is virtual address space, obtains the display data of each display layer, and all layers of display data are synthesized and shown according to layer display control information by second display system.The present invention also provides a kind of remote display methods, the display data projected using needs are directly mapped to distal end according to display layer, information MAP that how each display layer should be synthesized is to far-end operation system simultaneously, the upper screen display after directly being synthesized according to above- mentioned information of far-end operation system, the multiple copy for eliminating data, reduces system bandwidth demand.
Description
Technical field
It is shown the present embodiments relate to image and transmission technique field more particularly to a kind of remote display system and side
Method.
Background technique
Onboard system generally includes vehicle-mounted liquid crystal instrument system and vehicle-mounted middle control operating system, with integrated circuit technique
It improves, vehicle-mounted liquid crystal instrument system and vehicle-mounted middle control operating system have integrated trend, multiple system meetings with different function
Operate in one chip.
In vehicle-mounted single chip solution, it is often necessary to the display data projection applied in an operating system to another behaviour
On the display for making system control, such as on vehicle-mounted middle conduct boat data projection to vehicle-mounted liquid crystal instrument display.Traditional
Implementation is sent to liquid crystal instrument after application display data layer generally being synthesized in vehicle-mounted middle control operating system
Operating system, liquid crystal instrument operating system transfer to display controller to be shown after receiving synthetic figure layer data.Upper
During stating long-range display, due to being related to transmitting of the video memory between two operating system, it is related to multiple Data Synthesis write-in
It reads, system bandwidth demand can be dramatically increased, and then display frame rate may be influenced, so that driver card.
Summary of the invention
In order to solve the shortcomings of the prior art, the present invention provides a kind of remote display system and method, and one is grasped
Make to be mapped to another operating system by shared drive mode using the display layer data of display in system, reduces the bandwidth of system
Demand.
To achieve the above object, remote display system provided by the invention, including, the first display system, the second display system
System, wherein
First display system stores the display data of application rendering according to display layer, each by what is parsed
The physical address and layer display control information of display layer send jointly to second display system；
The physical address map of each display layer received is virtual address space, obtained by second display system
The display data of each display layer, and all layers of display data are synthesized and shown according to layer display control information
Show.
Further, the layer display control information, including, pixel format information, display position information, layer and layer are successive
Ordinal relation and transparency.
Further, first display system further comprises that application module, shared drive module and first are reflected
Penetrate module, wherein
The display data rendered are stored in the shared drive module by the application module according to display layer；
The shared drive module stores the display data that application has rendered according to display layer；
First mapping block, the virtual address space of each display layer is parsed, and will be parsed physically
Location is mapped to second display system together with layer display control information.
Further, second display system further comprises the second mapping block, display synthesis module, and
Display module, wherein
Second mapping block receives the physical address and layer display control of each display layer from first display system
Information will map the physical address of each display layer to virtual address space；By the virtual address space and layer display control
Information is sent to the display synthesis module；
The display synthesis module obtains the display data of each display layer from the virtual address space, and aobvious according to layer
Show that all layers of display Data Synthesis is sent to the display module for screen image by control information；
The display module receives the screen image that the display synthesis module is sent and is shown.
To achieve the above object, the present invention also provides a kind of remote display methods, comprising the following steps:
First display system will show that data are stored according to display layer；
The physical address parsed and layer display control information are sent to the second display system；
It is the display data that virtual address space obtains each display layer by physical address map, is believed according to the layer display control
Breath carries out synthesis to display data and shows.
Further, the layer display control information, including, pixel format information, display position information, layer and layer are successive
Ordinal relation and transparency.
Further, first display system will show the step of data are stored according to display layer, including,
Application module stores the display data of rendering to shared drive module according to display layer；
Each display layer virtual address space and layer display control information are sent to the first mapping mould by the shared drive module
Block.
Further, the physical address that will be parsed and layer display control information are sent to the second display system
Step, including,
First mapping block parses physical address according to the virtual address space of each display layer；
The physical address and layer display control information are sent to second display system.
To achieve the above object, the present invention also provides a kind of computer readable storage mediums, are stored thereon with program, described
The step of program can be executed by processor, realize above-mentioned remote display method.
Remote display system and method provided by the invention, directly the display data projected using needs according to display layer
(layer) it is mapped to distal end, while the layer display control information how each display layer (layer) should synthesize is mapped to far
End.The upper screen display after directly being synthesized according to above- mentioned information of distal displayed system, eliminates the multiple copy of data, reduces
System bandwidth demand.Compared with the existing technology, the technical effects of the invention are that, long-range display (remote display) is reduced
Demand of the scene to bandwidth；Using remotely (remote display) and (local is locally displayed in display after the present invention
Display) equally, additional single wide demand will not be brought；Improving performance is reduced due to the slack-off caused client of display frame rate
Experience decline；Degradated system power consumption, low bandwidth cost also reduce system power dissipation simultaneously.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, and with it is of the invention
Content and embodiment together, are used to explain the present invention, and are not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is remote display system architecture diagram according to the present invention；
Fig. 2 is according to one structural schematic diagram of one embodiment of the present of invention；
Fig. 3 is long-range display system, method flow chart according to the present invention.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that embodiment described herein
Only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
It, directly will be using the physical address for needing the display data projected to store according to display layer in the embodiment of the present invention
It is mapped to distal end, while the layer display control information how each display layer should synthesize is mapped to distal end, far-end operation system
System upper screen display after directly being synthesized according to above- mentioned information, eliminates the multiple copy of data.
The application being projected is rendered, wash with watercolours often with multiple display layers (layer) using 2D/3D technology
The data contaminated are put into different video memorys according to display layer (layer), and video memory is continuous in virtual address space, but in object
It may be discontinuous for managing on address, thus by local parsing the video memory of these different display layers (layer) physical address simultaneously
And far-end operation system is passed to by event channel (event channel) between operating system.On far-end operation system obtains
The physical address of these display layers (layer) that remap after address information is stated to continuous virtual address space, in this way distal end
The display data that these needs synthesize can correctly be obtained.
Fig. 1 is remote display system architecture diagram according to the present invention, as shown in Figure 1, remote display system of the invention, packet
It includes, the first display system 10, the second display system 20, wherein
First display system 10 saves the display data of application rendering according to display layer, empty from continuous virtual address
Between in parse the physical address (physical address may not be continuous) of each display layer, and physically by each display layer
Location and layer display control information are mapped to the second display system 20 together.
Second display system 20, the physical address and layer for receiving each display layer that the first display system 10 is sent are shown
Information is controlled, is continuous virtual address space by the physical address map of each display layer, from continuous virtual address space
The display data of each display layer are obtained, and are to synthesize screen by all layers of display Data Synthesis according to layer display control information
It is shown after aobvious image.
Layer display control information, including,
Pixel format (pixel format) information；
Display position information: display width (content width)/display height (content height)/display x
offset/y offset/display width/display height；
Layer and layer sequencing relationship (z-order)；
Transparency (Alpha).
First display system 10 further comprises application module 101, shared drive module 102 and the first mapping mould
Block 103,
Application module 101 is rendered using 2D/3D technology, and the display data rendered are deposited according to display layer (layer)
Enter in shared drive module 102；
Shared drive module 102 is used to store using the display data rendered according to display layer, and will be each aobvious
Show that the virtual address space of layer and layer display control information are sent to the first mapping block 103；
First mapping block 103, the virtual address space of each display layer is parsed, and each display that will be parsed
The physical address and layer display control information of layer are mapped to the second display system 20.
Second display system 20 further comprises the second mapping block 201, display synthesis module 202, and display mould
Block 203,
Second mapping block 201 receives the physical address and layer display control letter of each display layer from the first display system 10
Breath, will map the physical address of each display layer to the virtual address space of each display layer；Virtually by each display layer
Location space and layer display control information are sent to display synthesis module 202；
It shows synthesis module 202, the display data of each display layer, and root is obtained from the virtual address space of each display layer
All layers of display Data Synthesis is sent to display module 203 for screen image according to layer display control information；
Display module 203 receives the screen image that display synthesis module 202 is sent and is shown.
Embodiment one
Fig. 2 is according to one structural schematic diagram of one embodiment of the present of invention, as shown in Fig. 2, the embodiment of the present invention one is long-range aobvious
Show system, there are two operating systems: local steerable system is middle control operating system (IVI), and far-end operation system is instrument operation
System (cluster).
Wherein, middle control operating system is Android+Linux system, and instrument software systems can be QT+LINUX either
QNX, two operating systems pass through shared drive interaction data.Application to be projected has 3 display layers (layer), a display
Layer (layer) carries out 2D rendering, in addition needs 3D to render two layers, and finally synthesize a display layer (layer), and above-mentioned two
Layer data is to need to project to far-end operation system.
Native operating sys-tern is controlled above-mentioned two layers and how to be synthesized, and also needs to be remapped to distal end.
Layer display control (the display how mapping block synthesizes application display layer data to be mapped and description
Control) information looks for physical page address by forming the virtual address page (VA) of these data in middle control operating system
(PA), then physical page address by event channel (event channel) between operating system remote meter is passed to
(cluster) layer data physical address is remapped to hardware display controller and can visited by operating system, far-end operation system
The virtual address space asked.Far-end operation system is according to display control (display control) information of mapping to display layer
(layer) data are read out and progress 2D operation.
Embodiment two
Fig. 3 be remote display method flow chart according to the present invention, below with reference to Fig. 3 to remote display method of the invention into
Row detailed description.
Firstly, in step 301, using being rendered, and the display data of rendering are stored according to display layer.
In one embodiment, application module 101 stores the display data of rendering to shared drive mould according to display layer
In block 102.
In step 302, the virtual address space of display layer is parsed, obtains the physical address of display layer.
In one embodiment, the first mapping block 103 parsing shared drive module 102 stores the virtual of each display layer
Address space obtains the physical address for storing each display layer.
In step 303, the physical address and layer display control information of each display layer are sent.
In one embodiment, the first mapping block 103 is by the physical address of each display layer and layer display control information
It is sent to the second display system 20.
In one embodiment, layer display control information, including,
Pixel format (pixel format) information；
Display position information: display width (content width)/display height (content height)/display x
offset/y offset/display width/display height；
Layer and layer sequencing relationship (z-order)；
Transparency (Alpha).
It is virtual address space by the physical address map of each display layer in step 304.
In one embodiment, the second mapping block 201 receives the object for each display layer that the first mapping block 103 is sent
Address and layer display control information are managed, and is virtual address space by the physical address map of each display layer.
In step 305, the display data of all display layers are synthesized and shown.
In one embodiment, display synthesis module 202 obtains each display from the virtual address space of each display layer
The display data of layer, and be that screen image is sent to display mould by all layers of display Data Synthesis according to layer display control information
Block 203；Display module 203 receives the screen image that display synthesis module 202 is sent and is shown.
It is local to project due to needing to show that data are exempted to copy in operating system process in the embodiment of the present invention
Application, the subsequent display for being projected application from shared drive (share memory) are needed using data when application display memory
This shared drive can be all written in rendering data.Shared drive (share memory) is two just set startup stage
Operating system shared drive.
One embodiment of the invention provides a kind of computer readable storage medium, and the computer-readable recording medium storage has
Program, described program can be executed by processor, the step of to realize remote display method method described in any embodiment.
The computer readable storage medium includes: USB flash disk, read-only memory (ROM, Read-Only Memory), random
Access memory (RAM, Random Access Memory), mobile hard disk, magnetic or disk etc. are various to can store program
The medium of code.
It will appreciated by the skilled person that above whole or certain steps in institute's inventive method, system, be
Functional module/unit in system may be implemented as software, firmware, hardware and its combination appropriate.In hardware embodiment,
Division between the functional module/unit referred in the above description not necessarily corresponds to the division of physical assemblies；For example, one
Physical assemblies can have multiple functions or a function or step and can be executed by several physical assemblies cooperations.Certain groups
Part or all components may be implemented as by processor, such as the software that digital signal processor or microprocessor execute, or by
It is embodied as hardware, or is implemented as integrated circuit, such as specific integrated circuit.Such software can be distributed in computer-readable
On medium, computer-readable medium may include computer storage medium (or non-transitory medium) and communication media (or temporarily
Property medium).As known to a person of ordinary skill in the art, term computer storage medium is included in for storing information (such as
Computer readable instructions, data structure, program module or other data) any method or technique in the volatibility implemented and non-
Volatibility, removable and nonremovable medium.Computer storage medium include but is not limited to RAM, ROM, EEPROM, flash memory or its
His memory technology, CD-ROM, digital versatile disc (DVD) or other optical disc storages, magnetic holder, tape, disk storage or other
Magnetic memory apparatus or any other medium that can be used for storing desired information and can be accessed by a computer.This
Outside, known to a person of ordinary skill in the art to be, communication media generally comprises computer readable instructions, data structure, program mould
Other data in the modulated data signal of block or such as carrier wave or other transmission mechanisms etc, and may include any information
Delivery media.
Although disclosed herein embodiment it is as above, the content only for ease of understanding the present invention and use
Embodiment is not intended to limit the invention.Technical staff in any fields of the present invention is taken off not departing from the present invention
Under the premise of the spirit and scope of dew, any modification and variation, but the present invention can be carried out in the form and details of implementation
Scope of patent protection, still should be subject to the scope of the claims as defined in the appended claims.
Claims (9)
1. a kind of remote display system, including, the first display system, the second display system, which is characterized in that
First display system stores the display data of application rendering according to display layer, each by what is parsed
The physical address and layer display control information of display layer send jointly to second display system；
The physical address map of each display layer received is virtual address space, obtained by second display system
The display data of each display layer, and all layers of display data are synthesized and shown according to layer display control information
Show.
2. remote display system as described in claim 1, which is characterized in that the layer display control information, including, pixel compartments
Formula information, display position information, layer and layer sequencing relationship and transparency.
3. remote display system as claimed in claim 2, which is characterized in that first display system further comprises answering
With module, shared drive module and the first mapping block, wherein
The display data rendered are stored in the shared drive module by the application module according to display layer；
The shared drive module stores the display data that application has rendered according to display layer；
First mapping block, the virtual address space of each display layer is parsed, and will be parsed physically
Location is mapped to second display system together with layer display control information.
4. remote display system as claimed in claim 2, which is characterized in that second display system further comprises
Two mapping blocks, display synthesis module and display module, wherein
Second mapping block receives the physical address and layer display control of each display layer from first display system
Information will map the physical address of each display layer to virtual address space；By the virtual address space and layer display control
Information is sent to the display synthesis module；
The display synthesis module obtains the display data of each display layer from the virtual address space, and aobvious according to layer
Show that all layers of display Data Synthesis is sent to the display module for screen image by control information；
The display module receives the screen image that the display synthesis module is sent and is shown.
5. a kind of remote display method, method includes the following steps:
First display system will show that data are stored according to display layer；
The physical address parsed and layer display control information are sent to the second display system；
It is the display data that virtual address space obtains each display layer by physical address map, is believed according to the layer display control
Breath carries out synthesis to display data and shows.
6. remote display method as claimed in claim 5, which is characterized in that the layer display control information, including, pixel compartments
Formula information, display position information, layer and layer sequencing relationship and transparency.
7. remote display method as claimed in claim 5, which is characterized in that first display system will show data according to
The step of display layer is stored, including,
Application module stores the display data of rendering to shared drive module according to display layer；
Each display layer virtual address space and layer display control information are sent to the first mapping mould by the shared drive module
Block.
8. remote display method as claimed in claim 5, which is characterized in that the physical address that will be parsed and layer are shown
The step of control information is sent to the second display system, including,
First mapping block parses physical address according to the virtual address space of each display layer；
The physical address and layer display control information are sent to second display system.
9. a kind of computer readable storage medium, is stored thereon with program, which is characterized in that described program can be executed by processor
The step of claim 5-8 described in any item remote display methods.
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| CN111114320A (en) * | 2019-12-27 | 2020-05-08 | 深圳市众鸿科技股份有限公司 | Vehicle-mounted intelligent cabin sharing display method and system |
| CN111415636A (en) * | 2020-03-31 | 2020-07-14 | 惠州华阳通用电子有限公司 | Picture sharing system and implementation method thereof |
| CN114461158A (en) * | 2021-12-29 | 2022-05-10 | 沈阳中科创达软件有限公司 | Application screen projection method and device, vehicle-mounted terminal and readable storage medium |
| CN115086755A (en) * | 2022-06-08 | 2022-09-20 | 亿咖通(湖北)技术有限公司 | Screen projection method, device, equipment and medium |
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| CN116052617A (en) * | 2023-03-29 | 2023-05-02 | 南京芯驰半导体科技有限公司 | Screen brightness control system, method, device, equipment and storage medium |
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| CN111114320A (en) * | 2019-12-27 | 2020-05-08 | 深圳市众鸿科技股份有限公司 | Vehicle-mounted intelligent cabin sharing display method and system |
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| CN114461158A (en) * | 2021-12-29 | 2022-05-10 | 沈阳中科创达软件有限公司 | Application screen projection method and device, vehicle-mounted terminal and readable storage medium |
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| CN115086755A (en) * | 2022-06-08 | 2022-09-20 | 亿咖通(湖北)技术有限公司 | Screen projection method, device, equipment and medium |
| CN115334293A (en) * | 2022-07-11 | 2022-11-11 | 岚图汽车科技有限公司 | Display system, projection control method thereof and main and auxiliary display systems |
| CN115334293B (en) * | 2022-07-11 | 2023-10-13 | 岚图汽车科技有限公司 | Display system, projection control method thereof and main and auxiliary display systems |
| CN116052617A (en) * | 2023-03-29 | 2023-05-02 | 南京芯驰半导体科技有限公司 | Screen brightness control system, method, device, equipment and storage medium |
| CN116052617B (en) * | 2023-03-29 | 2023-06-27 | 南京芯驰半导体科技有限公司 | Screen brightness control system, method, device, equipment and storage medium |
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| Publication number | Publication date |
|---|---|
| CN110456994B (en) | 2023-03-10 |
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