CN101894536A - Application method capable of enabling all displays connected to matrix to display normally - Google Patents
Application method capable of enabling all displays connected to matrix to display normally Download PDFInfo
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- CN101894536A CN101894536A CN201010210652XA CN201010210652A CN101894536A CN 101894536 A CN101894536 A CN 101894536A CN 201010210652X A CN201010210652X A CN 201010210652XA CN 201010210652 A CN201010210652 A CN 201010210652A CN 101894536 A CN101894536 A CN 101894536A
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Abstract
The invention relates to a new application method capable of enabling all displays connected to a matrix to display normally, which can effectively solve the display problem caused by different EDID between different brands and displays with different models and changes the traditional design method as follows: the matrix extracts and settles EDID data of all displays at first, then integrates the data into a group of new EDID data capable of being supported by all displays in the transmission process in stead of singly adopting contents in any one of the displays; and then the group of new EDID information is transmitted to a PC host in each channel to enable each PC host to transmit displayed images based on the group of new EDID information. By adopting the method in the invention, as long as the display model is not replaced, each display can display normally no matter what switch is carried out. Even if the display is replaced, the EDID data is updated immediately after replacement and is transmitted to each PC host timely; therefore, all displays can be still displayed normally.
Description
Technical field
The present invention relates to the application process that in a kind of DVI or the VGA matrix display can normally be shown.
Background technology
In problems in present society, the application that relates to VGA and DVI signal is more and more.And to VGA or DVI signal dispatch or the matrix class product that distributes multifarious especially, of a great variety; Not only differ in size, scale differs, and uses and the mode controlled also is not quite similar.But in any case, they all inevitably run into a common problem, and that is exactly the processing of DDC and EDID.DDC is exactly the abbreviation of DISPLAY DATACHNNEL, just DDC.EDID then is the abbreviation of Extended DisplayIdentification Data, and promptly the extending display identification data are a kind of VESA standard data formats.In PC and process that display is connected, these two decisive role.
As Fig. 1 in traditional DVI matrix or VGA matrix, all be to adopt the man-to-man application of EDID, be that passage connects the EDID data which display which display just adopts, but the problem of Chu Xianing is to switch in same passage when two or more displays like this, and matrix does not know to adopt the EDID data of which display.Thereby when causing a plurality of displays to show the content of same PC, the situation that indivedual displays can not be supported can appear.If in the A channel be the EDID data of A display, and be the EDID data of B display in the B passage, have so at the scene in the time of B display need being switched to A channel, because the EDID data in A, the B display may be inequality, will occur like this when A channel during according to indivedual resolution of A display EDID The data or refresh rate, B display is not supported, can not normally show.If when switching, with the EDID Data Update of A channel is the EDID data of B display, the A display is not necessarily supported again so, so just had a strong impact on the use of curstomer`s site, also just press for a kind of can the switching arbitrarily, can problem above-mentioned not occur again simultaneously because of the difference of each display EDID data at interchannel.
Summary of the invention
This in order to solve owing to the different demonstration problems that cause of EDID data, the present invention has designed a kind of new application process that all displays that is connected to matrix can both normally be shown especially, and this method can effectively solve this because different demonstration problems that cause of EDID between different brands and different model display.
Concrete technical scheme of the present invention is: the method that has changed traditional design, matrix adopts the content of any display no longer separately, but in the process of transmission, put in order after the EDID data extract with all displays earlier, be integrated into the new EDID data that one group of all displays can both be supported.Promptly in DVI and VGA matrix,, judge whether work as prepass connects display, and the display connection situation of all connections is reported matrix, each display is carried out the work of reading of EDID by matrix according to the detection pin of the hot plug of display; And the EDID information of respectively organizing that will read is handled, extract the effective information relevant with demonstration, the process of arrangement more by analysis,, reorganization, valid data in the EDID data of each display are combined, by corresponding algorithm, make and respectively organize the new EDID data that one group of each display of the information integrated one-tenth of different EDID is all supported, then, again the new EDID information of this group is issued the PC main frame of each passage, made each PC main frame transmit displayed image according to the new EDID information of this group.
When display plug operation, the hot plug pin in time informs matrix with the level variation, matrix very first time while is read the display EDID information after the renewal, comprehensive then other monitor information, the process of replicate analysis, arrangement, reorganization, and the EDID after the renewal integration makes the content of each main frame output change along with the change of display EDID information to each PC main frame that is connected with matrix.
Beneficial effect of the present invention: in any case switch, only otherwise change the model of display, each display can normally show.Even more switching display also can in time send to each PC main frame changing very first time renewal EDID data afterwards, all like this displays still can normally show.
Description of drawings
Fig. 1 is 1 pair 1 EDID processing mode synoptic diagram that switches of classical matrix.
When Fig. 2 switched for 1 couple 1 of the present invention, EDID and demonstration concerned synoptic diagram.
When Fig. 3 switched 1 pair for the present invention more, EDID and demonstration concerned synoptic diagram.
Embodiment
Display offers the EDID data of PC such as receiving capable field frequency scope, production firm, date of manufacture, product ID, product type, typical display mode and parameter thereof, the DDC standard category of being supported, version information of EDID or the like.Matrix is according to the EDID information that display provides, and extracts, analysis, finishing processes, and detailed process is as follows:
At first, extract the valid data relevant with demonstration, as: the size of display; The resolution that display is supported; The field frequency refresh rate that each resolution of display is supported; The row of display, an available point; A series of information such as other function that display is supported.Rejecting is irrelevant with demonstration from display EDID data again, but might influence the information of display operate as normal, as: the EDID version number of each display; The date of manufacture of display; Some information of manufacturer of display or the like.
After obtaining effective information, the effective information of each display is compared, as: the A display is supported 1024X 768@60Hz, and B display is supported 1024 X 768@60Hz and 1280 X 1024@60Hz.So after two displays are connected to matrix, for two displays of output image that make PC are all supported, the resolution 1280 X 1024@60Hz that among the then new EDID not all display all supported reject, and keep the valid data 1024 X 768@60Hz that all displays is all supported.Then the resolution that new EDID supports after the arrangement is 1024X 768@60Hz.And new EDID data are reported PC, make PC carry out the output of image according to new EDID data content.
It more than is process to EDID data extract, analysis, arrangement and reorganization.
In DVI and VGA matrix, according to the detection pin of the hot plug of display, judge whether work as prepass connects display, and the display connection situation of all connections is reported matrix, each display is carried out the work of reading of EDID by matrix.And the EDID information of respectively organizing that will read is handled, extract the effective information relevant with demonstration, as extract the resolution of supporting among the EDID the (the 35th, 36,37 data bytes), analyze, arrangement, the process of reorganization, valid data in the EDID data of each display are combined, by corresponding algorithm, make and respectively organize the new EDID data that one group of each display of the information integrated one-tenth of different EDID is all supported, then, again the new EDID information of this group is issued the PC main frame of each passage, made each PC main frame transmit displayed image according to the new EDID information of this group.Because the displayed image that this moment, the PC main frame was sent out is for the common support of each display EDID information institute, so any one display that is connected to matrix can both normally show the displayed image that current main frame is sent.
When display plug operation, the hot plug pin in time informs matrix with the level variation, matrix very first time while is read the display EDID information after the renewal, comprehensive then other monitor information, the process of replicate analysis, arrangement, reorganization, and the EDID after the renewal integration makes the content of each main frame output change along with the change of display EDID information to each PC main frame that is connected with matrix.So no matter all can satisfy all displays that are connected to matrix when can both operate as normal.
The above; only be the preferable embodiment of the present invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, all should be encompassed within protection scope of the present invention.
Claims (2)
1. new the allowing all displays that the is connected to matrix application process that can both normally show, it is characterized in that: in DVI or VGA matrix, detection pin according to the hot plug of display, judge whether work as prepass connects display, and the display connection situation of all connections reported matrix, each display is carried out the work of reading of EDID by matrix; And the EDID information of respectively organizing that will read is handled, extract the effective information relevant with demonstration, the process of arrangement more by analysis,, reorganization, valid data in the EDID data of each display are combined, by corresponding algorithm, make and respectively organize the new EDID data that one group of each display of the information integrated one-tenth of different EDID is all supported, then, again the new EDID information of this group is issued the PC main frame of each passage, made each PC main frame transmit displayed image according to the new EDID information of this group; When display plug operation, the hot plug pin in time informs matrix with the level variation, matrix very first time while is read the display EDID information after the renewal, comprehensive then other monitor information, the process of replicate analysis, arrangement, reorganization, and the EDID after the renewal integration makes the content of each main frame output change along with the change of display EDID information to each PC main frame that is connected with matrix.
2. a kind of new application process that all displays that is connected to matrix can both normally be shown as claimed in claim 1, it is characterized in that: the process to described EDID data extract, analysis, arrangement, reorganization is, at first, extract the valid data relevant with demonstration; Rejecting is irrelevant with demonstration from display EDID data again, but might influence the information of display operate as normal; After obtaining effective information, the effective information of each display is compared, keep the valid data that all displays is all supported.
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103870222A (en) * | 2012-12-11 | 2014-06-18 | 联想(北京)有限公司 | Display output control method and electronic device |
CN104793701A (en) * | 2015-04-07 | 2015-07-22 | 联想(北京)有限公司 | Information processing method and device |
CN104796626A (en) * | 2015-04-17 | 2015-07-22 | 深圳市东明炬创电子有限公司 | Hybrid matrix dynamic intelligent EDID (extended display identification data) algorithm |
CN104980666A (en) * | 2014-04-02 | 2015-10-14 | 宏正自动科技股份有限公司 | Video switcher and switching method thereof |
CN105578105A (en) * | 2015-12-22 | 2016-05-11 | 深圳Tcl数字技术有限公司 | HDMI version switching method and display device |
CN106507015A (en) * | 2015-09-08 | 2017-03-15 | 北京东方久瑞系统工程技术有限公司 | A kind of allotter display output method operated based on EDID |
CN108055492A (en) * | 2017-12-20 | 2018-05-18 | 深圳市深智电科技有限公司 | A kind of HDMI sounds draw piece-rate system and method |
CN108121681A (en) * | 2017-12-04 | 2018-06-05 | 努比亚技术有限公司 | A kind of hot plug implementation method, terminal and storage medium |
CN111949236A (en) * | 2019-05-16 | 2020-11-17 | 慧荣科技股份有限公司 | Display information processing apparatus and display information processing method |
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CN1499355A (en) * | 2002-10-29 | 2004-05-26 | 微软公司 | Display controller for connecting multiple displays by using single visual cable |
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CN1499355A (en) * | 2002-10-29 | 2004-05-26 | 微软公司 | Display controller for connecting multiple displays by using single visual cable |
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Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103870222A (en) * | 2012-12-11 | 2014-06-18 | 联想(北京)有限公司 | Display output control method and electronic device |
CN104980666A (en) * | 2014-04-02 | 2015-10-14 | 宏正自动科技股份有限公司 | Video switcher and switching method thereof |
CN104980666B (en) * | 2014-04-02 | 2018-02-27 | 宏正自动科技股份有限公司 | Video switcher and switching method thereof |
CN104793701A (en) * | 2015-04-07 | 2015-07-22 | 联想(北京)有限公司 | Information processing method and device |
CN104793701B (en) * | 2015-04-07 | 2018-07-03 | 联想(北京)有限公司 | A kind of information processing method and equipment |
CN104796626A (en) * | 2015-04-17 | 2015-07-22 | 深圳市东明炬创电子有限公司 | Hybrid matrix dynamic intelligent EDID (extended display identification data) algorithm |
CN106507015A (en) * | 2015-09-08 | 2017-03-15 | 北京东方久瑞系统工程技术有限公司 | A kind of allotter display output method operated based on EDID |
CN105578105A (en) * | 2015-12-22 | 2016-05-11 | 深圳Tcl数字技术有限公司 | HDMI version switching method and display device |
CN108121681A (en) * | 2017-12-04 | 2018-06-05 | 努比亚技术有限公司 | A kind of hot plug implementation method, terminal and storage medium |
CN108121681B (en) * | 2017-12-04 | 2020-12-11 | 泾县谷声信息科技有限公司 | Hot plug implementation method, terminal and storage medium |
CN108055492A (en) * | 2017-12-20 | 2018-05-18 | 深圳市深智电科技有限公司 | A kind of HDMI sounds draw piece-rate system and method |
CN111949236A (en) * | 2019-05-16 | 2020-11-17 | 慧荣科技股份有限公司 | Display information processing apparatus and display information processing method |
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Application publication date: 20101124 |