CN102819410A - Display capable of realizing double-screen display function - Google Patents
Display capable of realizing double-screen display function Download PDFInfo
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- CN102819410A CN102819410A CN201110152674XA CN201110152674A CN102819410A CN 102819410 A CN102819410 A CN 102819410A CN 201110152674X A CN201110152674X A CN 201110152674XA CN 201110152674 A CN201110152674 A CN 201110152674A CN 102819410 A CN102819410 A CN 102819410A
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Abstract
The invention discloses a display capable of realizing a double-screen display function. The display comprises a display panel and a display mainboard; the display panel and the display mainboard are connected with each other through a first low voltage differential signaling (LVDS) line and a second LVDS line; and the display mainboard is provided with a central processing unit (CPU) main chip, a first video graphics array (VGA) interface module and a second video graphics array (VGA) interface module, and the CPU main chip is connected with the display panel through the first LVDS line and the second LVDS line, and is simultaneously connected with the first video graphics array (VGA) interface module and the second video graphics array (VGA) interface module. Screen pictures outputted by two computers can be simultaneously displayed on the same display panel, so that work efficiency of a user is improved, and the display capable of realizing the double-screen display function brings convenience for work and life of the user.
Description
Technical field
The present invention relates to household electrical appliance technical field, particularly relate to a kind of display of realizing the double screen Presentation Function.
Background technology
Continuous development along with China's science and technology; Domestic electric appliances such as televisor, video camera, camera, computing machine are more and more universal in people's daily life; People often use a computer and understand the information of outside and learn, and computing machine has become people's indispensable ingredient of living.
At present, in order to increase work efficiency, people move a notebook and a desktop computer simultaneously in regular meeting is in front yard or office; Observe the content of two screens simultaneously and carry out computation, especially when carrying out the data contrast, at this time; Because people's sight need be switched between two screens back and forth, therefore makes troubles to people's work, is easy to generate work fatigue; Increase people's work intensity greatly, and cause the error in the work.
Therefore; Press at present and develop a kind of display; It can show the screen-picture of two computing machine outputs simultaneously on a display pannel; Let the user observe the video content of two computing machine outputs simultaneously, thereby improve user's work efficiency greatly, offer convenience for user's work and life.
Summary of the invention
In view of this; The purpose of this invention is to provide a kind of display of realizing the double screen Presentation Function, it can show two computing machine outputs simultaneously on a display pannel screen-picture lets the user observe the video content of two computing machine outputs simultaneously; Thereby improve user's work efficiency greatly; Offer convenience for user's work and life, help strengthening the product use experience of display user, be of great practical significance.
For this reason; The invention provides a kind of display of realizing the double screen Presentation Function; Include display pannel and display main board, be connected with the 2nd LVDS signal wire through the first low-voltage differential signal LVDS signal wire between said display pannel and the display main board;
Said display main board is provided with central processor CPU master chip, the first Video Graphics Array VGA interface module and the second Video Graphics Array VGA interface module; Said CPU master chip is connected with said display pannel with the 2nd LVDS signal wire through a said LVDS signal wire, and said CPU master chip is connected with the 2nd VGA interface module with the first Video Graphics Array VGA interface module simultaneously;
The one VGA interface module and the 2nd VGA interface module are respectively applied for the vision signal that receives an outer computer input, then the vision signal that receives are transmitted to said CPU master chip;
Said CPU master chip is used for when receiving the vision signal of two-way outer computer input; Respectively this two-path video signal is compressed; Vision signal after will compressing is then exported to display pannel through a LVDS signal wire and the 2nd LVDS signal wire respectively; Left-half and right half part by display pannel carries out the picture demonstration respectively; And when receiving the vision signal of No. one outer computer input, received vision signal is directly exported to display pannel through a LVDS signal wire and the 2nd LVDS signal wire, directly the whole video signal is carried out picture by display pannel and show.
Wherein, said display main board is connected through the left-half of a LVDS signal wire and display pannel, and said display main board is connected through the right half part of the 2nd LVDS signal wire and display pannel.
Wherein, Include first signal processing module and secondary signal processing module in the said CPU master chip; Said first signal processing module is connected through the left-half of a LVDS signal wire and display pannel, and said secondary signal processing module is connected through the right half part of the 2nd LVDS signal wire and display pannel.
Visible by above technical scheme provided by the invention; Compared with prior art; A kind of display of realizing the double screen Presentation Function provided by the invention, it can show two computing machine outputs simultaneously on a display pannel screen-picture lets the user observe the video content of two computing machine outputs simultaneously; Thereby improve user's work efficiency greatly; Offer convenience for user's work and life, help strengthening the product use experience of display user, be of great practical significance.
Description of drawings
Fig. 1 is a kind of circuit structure block scheme of realizing the display of double screen Presentation Function provided by the invention;
Among the figure, 1 is display pannel, and 2 is display main board; 11 is the left-half of display pannel, and 12 is the right half part of display pannel, and 20 is the central processor CPU master chip; 21 is first signal processing module, and 22 is the secondary signal processing module, and 31 is the first low-voltage differential signal LVDS signal wire; 32 is the 2nd LVDS signal wire, and 41 is the first Video Graphics Array VGA interface module, and 42 is the 2nd VGA interface module.
Embodiment
In order to make those skilled in the art person understand the present invention program better, the present invention is done further detailed description below in conjunction with accompanying drawing and embodiment.
Referring to Fig. 1; The invention provides a kind of display of realizing the double screen Presentation Function; This display can be connected with two outer computers; This display includes display pannel 1 and display main board 2, is connected with the 2nd LVDS signal wire 32 through the first low-voltage differential signal LVDS signal wire 31 between said display pannel 1 and the display main board 2.
Concrete syndeton is: said display main board 2 is connected through the left-half 11 of a LVDS signal wire 31 and display pannel 1, and said display main board 2 is connected through the right half part 12 of the 2nd LVDS signal wire 32 and display pannel 1.
In the present invention; Said display main board 2 is provided with central processor CPU master chip 20, the first Video Graphics Array VGA interface module 41 and the second Video Graphics Array VGA interface module 42; Said CPU master chip 20 is connected with said display pannel 1 with the 2nd LVDS signal wire 32 through a said LVDS signal wire 31, and said CPU master chip 20 is connected with the second Video Graphics Array VGA interface module 42 with the first Video Graphics Array VGA interface module 41 simultaneously.
In the present invention, the first Video Graphics Array VGA interface module 41 and the 2nd VGA interface module 42 are respectively applied for the vision signal that receives an outer computer input, then the vision signal that receives are transmitted to said CPU master chip 20.
Said CPU master chip 20 is used for when receiving the vision signal of two-way outer computer input; Respectively this two-path video signal is compressed (decode and compress through burying an algorithm); Vision signal after will compressing is then exported to display pannel through a LVDS signal wire 31 and the 2nd LVDS signal wire 32 respectively; Carrying out picture by the left-half 11 of display pannel 1 with right half part 12 respectively shows; And when receiving the vision signal of No. one outer computer input; Received vision signal is directly exported to display pannel 1 through a LVDS signal wire and the 2nd LVDS signal wire, directly the whole video signal is carried out picture by display pannel 1 and show.
In the present invention; On concrete the realization; Include first signal processing module 21 and secondary signal processing module 22 in the said CPU master chip 20; Said first signal processing module 21 is connected through the left-half 11 of a LVDS signal wire 31 and display pannel 1, and said secondary signal processing module 22 is connected through the right half part 12 of the 2nd LVDS signal wire 32 and display pannel 1, when CPU master chip 20 receives the vision signal of No. one outer computer input; Have only first signal processing module 21 in work, do not move and bury an algorithm; And when CPU master chip 20 receives the vision signal of two-way outer computer input; First signal processing module 21 is worked simultaneously with secondary signal processing module 22 and is buried an algorithm separately; To decoding video signal and compression; Signal after the compression is exported to display pannel 1 respectively and shown, thereby be familiar with the function of double screen display.
Need to prove that two computing machines of case of external all are the signals of 1920*1080 resolution to the vision signal that display of the present invention sends, and display of the present invention also possess 1920*1080 physical picture element point.Because on same display, carry out split screen to the vision signal that outside two computing machines send shows; Thereby the image of the 1920*1080 resolution of every outer computer transmission; Can not be shown fully again, and demonstration is the image of two 960*1080 resolution.Therefore for a signal processing module, be example with first signal processing module 21 for example, it need be cut down the Pixel Information in the image horizontal ordinate of received vision signal.The foundation of cutting down is: as benchmark, its right side odd column and with the point in the delegation relatively is if the information heterochromia of permutation all within the specific limits, just with the information deletion of odd column with the point of the even column in the horizontal ordinate; If some row differs greatly, should permutation be kept, then remaining Pixel Information is repeated above-mentioned work, be 960 up to transversely remaining Pixel Information, guarantee the contrast of image with this, information integrity to avoid the dislocation of image.
In addition, increasing in view of present display, TV, the technician should know to line by line scan and one says.But along with the width of display device increases, horizontal pixel number no longer is 1024, but 1920.Horizontal scan period can be elongated like this, influences the refresh rate of entire image.Therefore display provided by the invention has adopted twin-channel LVDS signal wire (on concrete the realization; Even can adopt the LVDS signal wire of four-way) improve the horizontal refresh rate of image; The one LVDS signal wire is controlled the image of left half screen curtain, and the 2nd LVDS signal wire is controlled the image of right half screen curtain, as long as two passages reach synchronous; Thereby improve the refresh rate of entire image, reach 120Hz and more than.
For display provided by the invention, through burying after a some method handles, the information of giving a LVDS signal wire 31 only is used to show the image in left side, generally by clk, data0, data1, data2, data3 totally 5 barss form.On the liquid crystal panel of display, in fact some circuit comes the true processing display message, and the chip above it is referred to as Tcon.Tcon becomes picture signal into the signal of controlling each pixel of display, through turning to of control liquid crystal molecule, controls the information of demonstration.A Tcon chip can be handled two-way LVDS signal at least simultaneously, and makes left and right sides signal Synchronization.
For display provided by the invention, it can be connected with two computing machines, can realize the double screen Presentation Function; The video information that shows these two computing machine outputs about on the indicator screen; Thereby make things convenient for the user that the data in two computing machines are compared, and the user can come the content on two screens of display is operated respectively through a computing machine, can occur a mouse respectively on two screens; From computing machine separately, mutually noninterfere during operation.
In the present invention, need to prove that display of the present invention is preferably the LCD LCD, can also be three-dimensional (3D) display.
In sum, compared with prior art, a kind of display of realizing the double screen Presentation Function provided by the invention; It can show the screen-picture of two computing machine outputs simultaneously on a display pannel; Let the user observe the video content of two computing machine outputs simultaneously, thereby improve user's work efficiency greatly, offer convenience for user's work and life; Help strengthening the product use experience of display user, be of great practical significance.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (3)
1. the display that can realize the double screen Presentation Function; It is characterized in that; Include display pannel and display main board, be connected with the 2nd LVDS signal wire through the first low-voltage differential signal LVDS signal wire between said display pannel and the display main board;
Said display main board is provided with central processor CPU master chip, the first Video Graphics Array VGA interface module and the second Video Graphics Array VGA interface module; Said CPU master chip is connected with said display pannel with the 2nd LVDS signal wire through a said LVDS signal wire, and said CPU master chip is connected with the 2nd VGA interface module with the first Video Graphics Array VGA interface module simultaneously;
The one VGA interface module and the 2nd VGA interface module are respectively applied for the vision signal that receives an outer computer input, then the vision signal that receives are transmitted to said CPU master chip;
Said CPU master chip is used for when receiving the vision signal of two-way outer computer input; Respectively this two-path video signal is compressed; Vision signal after will compressing is then exported to display pannel through a LVDS signal wire and the 2nd LVDS signal wire respectively; Left-half and right half part by display pannel carries out the picture demonstration respectively; And when receiving the vision signal of No. one outer computer input, received vision signal is directly exported to display pannel through a LVDS signal wire and the 2nd LVDS signal wire, directly the whole video signal is carried out picture by display pannel and show.
2. display as claimed in claim 1; It is characterized in that; Said display main board is connected through the left-half of a LVDS signal wire and display pannel, and said display main board is connected through the right half part of the 2nd LVDS signal wire and display pannel.
3. like claim 1 or 2 described displays; It is characterized in that; Include first signal processing module and secondary signal processing module in the said CPU master chip; Said first signal processing module is connected through the left-half of a LVDS signal wire and display pannel, and said secondary signal processing module is connected through the right half part of the 2nd LVDS signal wire and display pannel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110152674XA CN102819410A (en) | 2011-06-09 | 2011-06-09 | Display capable of realizing double-screen display function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110152674XA CN102819410A (en) | 2011-06-09 | 2011-06-09 | Display capable of realizing double-screen display function |
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| CN102819410A true CN102819410A (en) | 2012-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110152674XA Pending CN102819410A (en) | 2011-06-09 | 2011-06-09 | Display capable of realizing double-screen display function |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104424911A (en) * | 2013-08-26 | 2015-03-18 | 英业达科技有限公司 | VGA interface protection circuit |
| WO2017206289A1 (en) * | 2016-05-31 | 2017-12-07 | 深圳市华星光电技术有限公司 | Interface apparatus and liquid crystal display having interface apparatus |
| CN110136665A (en) * | 2019-04-30 | 2019-08-16 | 惠州市德赛西威汽车电子股份有限公司 | A kind of vehicle-mounted Multi-screen display system driving method and device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101042851A (en) * | 2006-03-22 | 2007-09-26 | 松下电器产业株式会社 | Display apparatus |
| CN101388182A (en) * | 2007-09-14 | 2009-03-18 | 群康科技(深圳)有限公司 | LCD and computer system using the LCD |
-
2011
- 2011-06-09 CN CN201110152674XA patent/CN102819410A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101042851A (en) * | 2006-03-22 | 2007-09-26 | 松下电器产业株式会社 | Display apparatus |
| CN101388182A (en) * | 2007-09-14 | 2009-03-18 | 群康科技(深圳)有限公司 | LCD and computer system using the LCD |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104424911A (en) * | 2013-08-26 | 2015-03-18 | 英业达科技有限公司 | VGA interface protection circuit |
| CN104424911B (en) * | 2013-08-26 | 2016-08-31 | 英业达科技有限公司 | Video graphics array (VGA) interface protective circuit |
| WO2017206289A1 (en) * | 2016-05-31 | 2017-12-07 | 深圳市华星光电技术有限公司 | Interface apparatus and liquid crystal display having interface apparatus |
| US10482807B2 (en) | 2016-05-31 | 2019-11-19 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Interface devices and liquid crystal devices with the same |
| CN110136665A (en) * | 2019-04-30 | 2019-08-16 | 惠州市德赛西威汽车电子股份有限公司 | A kind of vehicle-mounted Multi-screen display system driving method and device |
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Application publication date: 20121212 |