CN103150134B - A kind of multi-screen display switched system and method - Google Patents
A kind of multi-screen display switched system and method Download PDFInfo
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- CN103150134B CN103150134B CN201310098851.XA CN201310098851A CN103150134B CN 103150134 B CN103150134 B CN 103150134B CN 201310098851 A CN201310098851 A CN 201310098851A CN 103150134 B CN103150134 B CN 103150134B
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Abstract
The invention discloses a kind of multi-screen display switched system and method, the priority that the present invention is different according to the setting of different display device correspondence, when there being display device to access, access device is detected, and obtain the extending display identification data message (EDID) of access device, call the display device of precedence information to access preset afterwards and compare analysis, obtain the optimum display device exported, simultaneously corresponding with optimum output display unit according to the EDID acquisition of information of access device setting parameter information, exports eventually through output display module.Compared with prior art, because the present invention has preset precedence information, therefore Analysis and Screening can be carried out according to the different display devices of this precedence information to access, to determine the display device that priority is the highest, and correspondence is switched to this display device correspondence output, thus the automatic identification achieved between multiple display screen and switching.
Description
Technical field:
The present invention relates to a kind of multi-screen display switched system and method, the display switched system particularly between a kind of multiple display screens for HDMI display device, LCD display device and VGA display device and method.
Background technology:
Along with the fast development of display technique, support that the display device of HDMI display technique, LCD display technique and VGA display technique is widely used in the field such as multimedia advertising, safety monitoring.
Traditional system display translation terminal only supports the display translation of single display screen usually, be connected to VGA display screen as by VGA data signal line and realize signal output, and along with the fast development of high definition technology is with universal, increasing system display translation terminal all has the interface can supporting LCD display device and high definition display device, can display screen be connected to by LCD signal data line, HDMI signal data line, realize the output of display.
Current system display translation terminal substantially all supports multiple display translation display devices such as HDMI display device, LCD display device and VGA display device, its correspondence can be connected respectively to different display screens by VGA signal data line, LCD signal data line, HDMI signal data line, realizes different display translation effects.Therefore the display terminal of this Multi-displayer display device can be applied to the occasion needing multiple different display translation, be connected to different display screens, but display effect concrete in actual use then needs according to manually switching, such as be connected with multiple display screen by VGA, LCD, HDMI signal data line simultaneously, switching between this multiple display screen then needs to be realized by manual operation, cannot realize automatically identifying and switching.
Summary of the invention:
For this reason, a kind of multi-screen is the object of the present invention is to provide to show switched system and method, to realize automatic identification between multiple display screens of being connected by VGA, LCD, HDMI signal data line and switching.
For achieving the above object, the present invention mainly adopts following technical scheme:
A kind of multi-screen display switched system, comprises master controller, display device information collection module, output display module, display terminal, memory module, display handover module and display terminal priority block; Described display device information collection module is connected with display terminal, for collecting the extending display identification data message of display terminal, and this information is returned to master controller; Described display terminal priority block is connected with master controller, for the priority of display device different in set and display terminal, and is saved to memory module by master controller by arranging result; Described display handover module is connected with master controller, for according to coming the extending display identification data message of autonomous controller and different display device precedence information, determines optimum display device, and generates handover information and send to master controller; Described master controller is connected with display terminal by output display module, for according to handover information, by the corresponding output display information of output display module to optimum display device.
Preferably, described display terminal comprise HDMI display device and or VGA display device and or LCD display device.
Preferably, this system also includes a display device Access Probe module, and described master controller is connected with display terminal by display device Access Probe module, detects the access of display terminal and extract operation by this display device Access Probe module.
Preferably, this system also includes an information searching module be connected with master controller, and this information searching module stores display device set information in a storage module according to the display terminal extending display identification data information retrieval that display device information collection module is collected.
Preferably, this system also includes a display terminal parameter adjustment module be connected with master controller, and this display terminal parameter adjustment module is used for the parameter of set and display terminal, and parameter is saved to memory module.
In addition, present invention also offers a kind of multi-screen display changeover method, comprise step:
S1, by the access of display device Access Probe module detection display terminal with extract operation, and feed back to master controller;
S2, display handover module is according to the display device precedence information preset and access the extending display identification data message of display device, carries out analyzing and processing, determines optimum display device, and generates handover information and send to master controller;
S3, master controller control output display module output display information to corresponding optimum display device according to described handover information.
Preferably, also comprise before step S1:
Display terminal comprise HDMI display device and or VGA display device and or LCD display device, and the priority of described display device is set by display device priority block.
Preferably, the priority of described display device is: HDMI display device is preferentially greater than VGA display device, VGA display device priority is greater than LCD display device or HDMI display device priority is less than VGA display device, and LCD display device priority is less than HDMI display device.
Preferably, also comprise between step S1 and S2:
The extending display identification data message of access display device is collected by display device information collection module, and by master controller corresponding stored in a storage module.
Preferably, step S3 comprises:
Retrieved the setting parameter information of optimum display device by information searching module, master controller is according to the display mode information of optimum display device and setting parameter information, and the corresponding output display module that controls exports the information of mating with optimum display device.
The priority that the present invention is different according to the setting of different display device correspondence, when there being display device to access, access device is detected, and obtain the extending display identification data message (EDID) of access device, call the display device of precedence information to access preset afterwards and compare analysis, obtain the optimum display device exported, simultaneously corresponding with optimum output display unit according to the EDID acquisition of information of access device setting parameter information, exports eventually through output display module.Compared with prior art, because the present invention has preset precedence information, therefore Analysis and Screening can be carried out according to the different display devices of this precedence information to access, to determine the display device that priority is the highest, and correspondence is switched to this display device correspondence output, thus the automatic identification achieved between multiple display screen and switching.
Accompanying drawing illustrates:
Fig. 1 is the theory diagram of multi-screen of the present invention display switched system.
Fig. 2 is the process flow diagram of multi-screen display changeover method of the present invention.
Embodiment:
For setting forth thought of the present invention and object, below in conjunction with the drawings and specific embodiments, the present invention is described further.
Shown in Figure 1, Fig. 1 is the theory diagram of multi-screen of the present invention display switched system.The present invention is to provide a kind of multi-screen display switched system, it identifies mainly through carrying out detection to the type of access signal data line, to judge the type of the display screen accessed, output display signal is on the display screen of correspondence afterwards, native system utilizes the detecting to tie-in line cable, and carry out display translation switching according to the result of detecting and the priority of setting, thus efficiently solve the problem that cannot realize automatically identifying and switch between current multiple display screen.
Wherein this system includes master controller, display device information collection module, display device Access Probe module, output display module, display terminal, memory module, display terminal parameter adjustment module, display handover module and display terminal priority block; Described display terminal comprise in HDMI display device, VGA display device, LCD display device any one or multiple.
Display device Access Probe module is connected with display terminal, for detecting the access of display terminal and extracting operation, and feed back to master controller, be mainly used in the access of detection HDMI display device/VGA display device/LCD display device in the present invention and extract operation, and notifying master controller.
Display device information collection module is connected with display terminal, for collecting the extending display identification data message (EDID) of display terminal, and this information is returned to master controller; When finding new HDMI display device/VGA display device/LCD display device access, by DDC bus, the EDID information of access display device can be collected, and result is returned to primary controller, to be saved to memory module.
Display terminal priority block is connected with master controller, for the priority of display device different in set and display terminal, and be stored in memory module by arranging result, here priority rule can according to user's actual need sets itself, such as HDMI display device priority is greater than VGA display device, VGA display device priority is greater than LCD display device, or HDMI display device priority is less than VGA display device, and LCD display device priority is less than HDMI display device.And when access display device identical time, then keep acquiescence display device play constant, that is, when access whole are HDMI display devices time, start most play adopt be that HDMI display device, then keep inconvenience.
Memory module is connected with master controller, for storing the EDID information that display device information collection module is collected and the precedence information storing the different display devices that display terminal priority block sets.
Information searching module is connected with memory module and master controller, carrys out the EDID information of autonomous controller, the setting parameter information (comprise but do not limit and resolution) of display device in corresponding retrieve stored module for basis.
Display terminal parameter adjustment module is connected with master controller, for the parameter of set and display terminal, and parameter is saved to memory module.
Display handover module is connected with master controller, the extending display identification data message of autonomous controller and different display device precedence information is come for basis, determine optimum display device, and generate handover information and send to master controller, master controller then controls output display module according to this handover information correspondence and carries out switching output function, wherein under the display default situations of master controller, lcd screen is exported to by display translation module, but when having access to new display device, display handover module can according to the result for retrieval of the display device precedence information set in display device priority block and information searching module, the display mode determining master controller (is namely select HDMI output mode or VGA output mode or LCD output mode, work as HDMI, VGA, when LCD display device has an access, then select HDMI display device according to priority, if when only having VGA, LCD display device to access, then select VGA display device, concrete selection is determined according to different priority rules), and according to result, be switched to the output mode of master controller, allow output display module export on correct equipment, complete automatic multi-screen handoff functionality.
Be more than the explanation to multi-screen display switched system of the present invention, be further described below in conjunction with 2 pairs, accompanying drawing multi-screen display changeover method of the present invention.
Shown in Figure 2, Fig. 2 is the process flow diagram of multi-screen display changeover method of the present invention.Present invention also offers a kind of multi-screen display changeover method, its concrete steps are as follows:
First the priority of display device is set by display device priority block, described priority sets according to the actual demand of user, it is specific as follows: HDMI display device is preferentially greater than VGA display device, VGA display device priority is greater than LCD display device or HDMI display device priority is less than VGA display device, and LCD display device priority is less than HDMI display device.
S1, by the access of display device Access Probe module detection display terminal with extract operation, and feed back to master controller;
S2, display handover module is according to the display device precedence information preset and access the extending display identification data message of display device, carries out analyzing and processing, determines optimum display device, and generates handover information and send to master controller;
Collected the extending display identification data message (EDID) of access display device by display device information collection module, and correspondence is stored in a storage module by master controller.
S3, master controller control output display module output display information to corresponding optimum display device according to described handover information.
Retrieved the setting parameter information of optimum display device by information searching module, master controller is according to the display mode information of optimum display device and setting parameter information, and the corresponding output display module that controls exports the information of mating with optimum display device.
The present invention is described for following priority order: HDMI priority facility is the highest, and VGA takes second place, and LCD display is minimum.
Systematic evaluation in above-mentioned situation will be described: insert if system does not detect HDMI and VGA cable, so the information of display translation directly exports in lcd screen by system, and now system remembers that this state is A below; When system looks is to when having VGA cable to insert, system remembers that this state is B, and now, system can according to this state, the output display that adjustment display translation is closed on LCD to VGA display device; When system looks is to when having a HDMI equipment access, remember that this state is C, system will ignore A and B, is exported to by display on HDMI equipment; For multi-screen display, cannot regulate except resolution except A exports lcd screen to, B and C has multiple resolution and exports, if system is in automatic switchover screen state, namely manually resolution is not set by display terminal parameter adjustment module, system obtains equipment EDID information by display device information collection module, and to the optimum resolution of display device output display unit; Simultaneity factor provides manual setting means, namely the resolution of VGA/HDMI equipment manually can be set by display terminal parameter adjustment module, system obtains the EDID information of equipment, according to EDID information, the resolution providing display device to support manually is selected for user, after manually successfully setting resolution, system can set up data sheet according to the device id in EDID information, preserves the resolution of user's selection to memory module.The selection of user is depended in manual setting success or not, when manually setting, system can be switched to new resolution and require that user confirms this resolution, all do not confirm if user cancels this manual switchover or spent a period of time, so system can switch the state of turning round and stretching out the hand and moving before setting, and thinks that this manually sets failure.
Display strategy of the present invention is divided into three kinds of situations: first if C state, so system display translation is on HDMI display device, and ignore B and A, in this case, perform the strategy that manually setting is preferential, system obtains the EDID information of display device by display device information collection module, and using device id information as retrieving information, pass through retrieval module, the data sheet that the manual setting of preserving in removal search memory module generates, if there is information matches, before explanation, success manually set the resolution of this display device, so this resolution of preserving is as the criterion by system output module, by the display translation of system on HDMI equipment, if do not have information matches success, so system is according to the optimum resolution (i.e. automatic mode) of equipment, by output display on HDMI equipment.
Its subsystem enters B state, does not namely access HDMI equipment but has accessed VGA display device, and so system ignores A state, system display translation is to VGA equipment, and in this case, and HDMI is similar, equally also perform the strategy of manual priority, the C state that concrete condition and the preceding paragraph describe is consistent.
If final system enters A state, so system display is without any the possibility regulated, and system display translation is in the lcd screen of fixed resolution.
More than that a kind of multi-screen display switched system provided by the present invention and method are described in detail, apply specific case herein to set forth structural principle of the present invention and embodiment, above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (2)
1. a multi-screen display switched system, is characterized in that comprising master controller, display device information collection module, output display module, display terminal, memory module, information searching module, display device Access Probe module, display terminal parameter adjustment module, display handover module and display terminal priority block; Wherein said display terminal comprise HDMI display device and or VGA display device and or LCD display device; Described display device information collection module is connected with display terminal, for collecting the extending display identification data message of display terminal, and this information is returned to master controller; Described display terminal priority block is connected with master controller, for the priority of display device different in set and display terminal, and is saved to memory module by master controller by arranging result; Described display handover module is connected with master controller, for according to coming the extending display identification data message of autonomous controller and different display device precedence information, determines optimum display device, and generates handover information and send to master controller; Described master controller is connected with display terminal by output display module, for according to handover information, by the corresponding output display information of output display module to optimum display device; Described master controller is connected with display terminal by display device Access Probe module, detects the access of display terminal and extract operation by this display device Access Probe module; Information searching module is connected with described master controller, and it stores display device set information in a storage module for the display terminal extending display identification data information retrieval collected according to display device information collection module; Described display terminal parameter adjustment module is connected with described master controller, and parameter for the parameter of set and display terminal, and is saved to memory module by it.
2. a multi-screen display changeover method, is characterized in that comprising:
First detect the access of display terminal by display device Access Probe module and extract operation, and feed back to master controller, wherein said display terminal comprise HDMI display device and or VGA display device and or LCD display device, and the priority of described display device is set by display device priority block; And the priority of described display device is: HDMI display device is preferentially greater than VGA display device, VGA display device priority is greater than LCD display device or HDMI display device priority is less than VGA display device, and LCD display device priority is less than HDMI display device;
Then the extending display identification data message of access display device is collected by display device information collection module, and by master controller corresponding stored in a storage module;
Then show the extending display identification data message of handover module according to the display device precedence information preset and access display device, carry out analyzing and processing, determine optimum display device, and generate handover information and send to master controller;
Retrieve the setting parameter information of optimum display device finally by information searching module, master controller is according to the display mode information of optimum display device and setting parameter information, and the corresponding output display module that controls exports the information of mating with optimum display device.
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| CN201310098851.XA CN103150134B (en) | 2013-03-26 | 2013-03-26 | A kind of multi-screen display switched system and method |
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| CN201310098851.XA CN103150134B (en) | 2013-03-26 | 2013-03-26 | A kind of multi-screen display switched system and method |
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| CN103150134B true CN103150134B (en) | 2015-12-09 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104965590A (en) * | 2015-06-29 | 2015-10-07 | 上海理工大学 | Input device |
| CN108873746B (en) * | 2016-02-26 | 2021-05-25 | 广州视睿电子科技有限公司 | Display device and control method thereof |
| TWI610289B (en) * | 2016-08-12 | 2018-01-01 | 晨星半導體股份有限公司 | Display controller and operation method thereof |
| CN108320745A (en) * | 2018-02-08 | 2018-07-24 | 北京小米移动软件有限公司 | Control the method and device of display |
| CN108549859B (en) | 2018-04-09 | 2021-04-06 | 深圳市鹰硕技术有限公司 | Multi-screen interactive network teaching method and device |
| CN109213465B (en) * | 2018-09-21 | 2021-04-09 | 深圳点猫科技有限公司 | Multi-display identification method and system for education operation system |
| CN109460326B (en) * | 2018-11-15 | 2022-05-10 | 中车株洲电力机车有限公司 | Distributed display method, system, equipment and computer readable storage medium |
| CN111031261A (en) * | 2019-12-31 | 2020-04-17 | 南京洛菲特数码科技有限公司 | HDMI video matrix input signal and display device matching method |
| CN112256371A (en) * | 2020-10-20 | 2021-01-22 | 北京字跳网络技术有限公司 | Method and device for displaying information and electronic equipment |
| CN115408089B (en) * | 2022-08-24 | 2024-02-06 | 上海宏英智能科技股份有限公司 | Dual-screen display switching method, system, storage medium and intelligent terminal |
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