CN114401367A - Video switching display method and system based on distributed EDID storage - Google Patents
Video switching display method and system based on distributed EDID storage Download PDFInfo
- Publication number
- CN114401367A CN114401367A CN202210040574.6A CN202210040574A CN114401367A CN 114401367 A CN114401367 A CN 114401367A CN 202210040574 A CN202210040574 A CN 202210040574A CN 114401367 A CN114401367 A CN 114401367A
- Authority
- CN
- China
- Prior art keywords
- display
- edid
- video
- control module
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/667—Camera operation mode switching, e.g. between still and video, sport and normal or high- and low-resolution modes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/95—Computational photography systems, e.g. light-field imaging systems
- H04N23/951—Computational photography systems, e.g. light-field imaging systems by using two or more images to influence resolution, frame rate or aspect ratio
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computing Systems (AREA)
- Theoretical Computer Science (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The invention provides a video switching display method and a video switching display system based on distributed EDID storage, which belong to the field of computers.
Description
Technical Field
The invention relates to the field of computers, in particular to a video switching display method and system based on distributed EDID storage.
Background
Generally, a server or a computer reads EDID information of a display through a DDC channel of a VGA when a system is started, and outputs an optimal resolution recommended by the display according to the EDID information of the display. When the computer device is not connected to the display or the EDID information is not successfully acquired, a default resolution is output.
In the VGA multi-channel switching application, a plurality of VGA DDC channels share one EDID storage device, so that only the connected device can acquire correct EDID information when being initialized and output the optimal display resolution; the other unconnected devices cannot correctly obtain the EDID information of the KVM switch, and the unconnected devices output the default resolution. When switching to another channel, the default output resolution of the newly connected device does not match the optimal resolution of the KVM switch display, resulting in an abnormal display.
Disclosure of Invention
In view of the above situation, the invention provides a video switching display method based on distributed EDID storage and a video switching display method, which solve the problem of abnormal display caused by inconsistency between the output resolution of equipment and the optimal resolution of a display screen.
The technical scheme of the invention is as follows:
a video switching display method based on distributed EDID storage,
by adopting a distributed EDID memory scheme, each VGA DDC channel is mounted with an EDID memory, the content in the EDID memory is consistent with the EDID information of the display, and correct EDID information of the display is obtained when each device is started, so that each image can be normally output.
Further, in the above-mentioned case,
when the video input equipment is accessed with the video signal, the singlechip control module can judge the address information of the video input equipment and provide the address information to the analog switch gating control module to gate the channel of the video access equipment.
And the single chip microcomputer control module acquires correct EDID information of the equipment, outputs the optimal resolution recommended by the display and realizes the normal output of the video signal of the equipment.
Further, in the above-mentioned case,
when the video access device is switched to another video input device, the singlechip control module judges the address information of the device again and provides the address information to the analog switch gating control module to open the channel of the video access device.
Because the content in the EDID memory is consistent with the EDID information of the display, the correct EDID information of the display can be obtained when the new switching equipment is started, and the optimal resolution recommended by the display is output, so that the image of the new switching equipment can be normally output and displayed.
In addition, the invention also provides a video switching display system based on distributed EDID storage, which comprises a single chip microcomputer control module, an analog switch gating control module, an EDID storage module, a multi-channel video input module and a video output display module;
wherein,
the singlechip control module is used for judging the address information of the video input equipment and providing the address information to the analog switch gating control module;
the analog switch gating control module is used for gating a channel of the video access equipment according to the address information provided by the singlechip control module;
the EDID storage module stores content consistent with the EDID information of the display;
the multi-channel video input module is used for accessing video signals;
and the video output display module outputs the optimal resolution recommended by the display.
Further, in the above-mentioned case,
when the multi-channel video input module is used for accessing video signals, the single-chip microcomputer control module can judge the address information of the multi-channel video input module and provides the address information to the analog switch gating control module, the channel of the video input module is opened, correct EDID information of the module is obtained, the optimal resolution recommended by the display is output, and the normal output of the video signals of the equipment is realized.
Further, in the above-mentioned case,
when the multi-channel video input module is switched, the single-chip microcomputer control module can judge the address information of the video input module and provides the address information for the analog switch gating control module to gate on the channel of the video input module, and as the content in the EDID memory is consistent with the EDID information of the display, the correct EDID information of the display can be obtained when the new switching equipment is started, and the optimal resolution recommended by the display is output, so that the image of the new switching equipment can be normally output and displayed.
Drawings
Fig. 1 is a system block diagram of distributed EDID storage.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer and more complete, the technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention, and based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the scope of the present invention.
When a PC connects to a VGA device without EDID, it will be identified as a "default monitor". At this time, the PC can only output some built-in default resolution and timing, and if the required resolution is not among the default resolutions, the PC cannot output it. At this time, EDID needs to be added to the VGA device to enable the PC to support the required resolution.
The invention adopts a distributed EDID memory scheme in the design, each VGA DDC channel is mounted with an EDID memory, the content in the EDID memory is consistent with the EDID information of the display, and the correct EDID information of the display can be obtained when each device is started, so that the normal output of each image display can be ensured.
As shown in the attached drawing, the invention adopts a multi-way switch controller to realize the output switching of video signals of different devices.
The invention comprises a single chip microcomputer control module, an analog switch gating control module, an EDID storage module, a multi-channel video input module and a video output display module.
By adopting a distributed EDID memory scheme, each VGA DDC channel is mounted with an EDID memory, and the content in the EDID memory is consistent with the EDID information of the display, so that correct EDID information of the display can be obtained when each device is started, and each image can be normally output.
When a plurality of paths of video input equipment are accessed to video signals, the singlechip control module can judge the address information of the video input equipment and provide the address information to the analog switch gating control module, the channel of the video access equipment is opened, correct EDID information of the equipment is obtained, the optimal resolution recommended by the display is output, and the normal output of the video signals of the equipment is realized.
When the video input device is switched to another video input device, the single chip microcomputer control module can judge the address information of the video input device and provides the address information to the analog switch gating control module, a channel of the video access device is opened, and because the content in the EDID memory is consistent with the EDID information of the display, the correct EDID information of the display can be obtained when the new switching device is started, and the optimal resolution recommended by the display is output, so that the image of the new switching device can be normally output and displayed.
When different video input equipment carries out signal input switching, can guarantee that the content in the EDID memory is unanimous with display EDID information, guarantee that every equipment homoenergetic obtains the correct EDID information of display when starting to guarantee that every way image display can normally export.
The above description is only a preferred embodiment of the present invention, and is only used to illustrate the technical solutions of the present invention, and not to limit the protection scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (8)
1. A video switching display method based on distributed EDID storage is characterized in that,
by adopting a distributed EDID memory scheme, each VGA DDC channel is mounted with an EDID memory, the content in the EDID memory is consistent with the EDID information of the display, and correct EDID information of the display is obtained when each device is started, so that each image can be normally output.
2. The method of claim 1,
when the video input equipment is accessed with the video signal, the singlechip control module can judge the address information of the video input equipment and provide the address information to the analog switch gating control module to gate the channel of the video access equipment.
3. The method of claim 2,
and the single chip microcomputer control module acquires correct EDID information of the equipment, outputs the optimal resolution recommended by the display and realizes the normal output of the video signal of the equipment.
4. The method of claim 2,
when the video access device is switched to another video input device, the singlechip control module judges the address information of the device again and provides the address information to the analog switch gating control module to open the channel of the video access device.
5. The method of claim 4,
because the content in the EDID memory is consistent with the EDID information of the display, the correct EDID information of the display can be obtained when the new switching equipment is started, and the optimal resolution recommended by the display is output, so that the image of the new switching equipment can be normally output and displayed.
6. A video switching display system based on distributed EDID storage is characterized in that,
the device comprises a singlechip control module, an analog switch gating control module, an EDID storage module, a multi-channel video input module and a video output display module;
wherein,
the singlechip control module is used for judging the address information of the video input equipment and providing the address information to the analog switch gating control module;
the analog switch gating control module is used for gating a channel of the video access equipment according to the address information provided by the singlechip control module;
the EDID storage module stores content consistent with the EDID information of the display;
the multi-channel video input module is used for accessing video signals;
and the video output display module outputs the optimal resolution recommended by the display.
7. The system of claim 6,
when the multi-channel video input module is used for accessing video signals, the single-chip microcomputer control module can judge the address information of the multi-channel video input module and provides the address information to the analog switch gating control module, the channel of the video input module is opened, correct EDID information of the module is obtained, the optimal resolution recommended by the display is output, and the normal output of the video signals of the equipment is realized.
8. The system of claim 6,
when the multi-channel video input module is switched, the single-chip microcomputer control module can judge the address information of the video input module and provides the address information for the analog switch gating control module to gate on the channel of the video input module, and as the content in the EDID memory is consistent with the EDID information of the display, the correct EDID information of the display can be obtained when the new switching equipment is started, and the optimal resolution recommended by the display is output, so that the image of the new switching equipment can be normally output and displayed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210040574.6A CN114401367A (en) | 2022-01-14 | 2022-01-14 | Video switching display method and system based on distributed EDID storage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210040574.6A CN114401367A (en) | 2022-01-14 | 2022-01-14 | Video switching display method and system based on distributed EDID storage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114401367A true CN114401367A (en) | 2022-04-26 |
Family
ID=81230681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210040574.6A Pending CN114401367A (en) | 2022-01-14 | 2022-01-14 | Video switching display method and system based on distributed EDID storage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114401367A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050069745A (en) * | 2003-12-31 | 2005-07-05 | 엘지전자 주식회사 | Apparatus for switching edid data format in an image display device |
| CN1763705A (en) * | 2004-10-19 | 2006-04-26 | 南京Lg同创彩色显示***有限责任公司 | EDID data format switching device for image display |
| CN101246391A (en) * | 2007-02-15 | 2008-08-20 | 宏正自动科技股份有限公司 | Kvm switch capable of providing edid of display for computer coupled thereto and method thereof |
| US20090091665A1 (en) * | 2007-10-09 | 2009-04-09 | Samsung Electronics Co., Ltd. | Display apparatus and method of changing edid information thereof |
| CN104092959A (en) * | 2014-07-15 | 2014-10-08 | 山东超越数控电子有限公司 | DVI video signal switching achieving method |
| CN107391071A (en) * | 2017-07-31 | 2017-11-24 | 苏州佳世达电通有限公司 | Display device and the interface switching method for display device |
| CN108156398A (en) * | 2018-01-03 | 2018-06-12 | 山东超越数控电子股份有限公司 | A kind of VGA Video Graphics Arrays and its method of work |
| CN112822438A (en) * | 2020-12-25 | 2021-05-18 | 深圳市巨烽显示科技有限公司 | Real-time control multichannel video manager |
-
2022
- 2022-01-14 CN CN202210040574.6A patent/CN114401367A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050069745A (en) * | 2003-12-31 | 2005-07-05 | 엘지전자 주식회사 | Apparatus for switching edid data format in an image display device |
| CN1763705A (en) * | 2004-10-19 | 2006-04-26 | 南京Lg同创彩色显示***有限责任公司 | EDID data format switching device for image display |
| CN101246391A (en) * | 2007-02-15 | 2008-08-20 | 宏正自动科技股份有限公司 | Kvm switch capable of providing edid of display for computer coupled thereto and method thereof |
| US20090091665A1 (en) * | 2007-10-09 | 2009-04-09 | Samsung Electronics Co., Ltd. | Display apparatus and method of changing edid information thereof |
| CN104092959A (en) * | 2014-07-15 | 2014-10-08 | 山东超越数控电子有限公司 | DVI video signal switching achieving method |
| CN107391071A (en) * | 2017-07-31 | 2017-11-24 | 苏州佳世达电通有限公司 | Display device and the interface switching method for display device |
| CN108156398A (en) * | 2018-01-03 | 2018-06-12 | 山东超越数控电子股份有限公司 | A kind of VGA Video Graphics Arrays and its method of work |
| CN112822438A (en) * | 2020-12-25 | 2021-05-18 | 深圳市巨烽显示科技有限公司 | Real-time control multichannel video manager |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100667748B1 (en) | Apparatus and method for outputting display identification data according to connector type | |
| US5943064A (en) | Apparatus for processing multiple types of graphics data for display | |
| US7568029B2 (en) | Apparatus and system for managing multiple computers | |
| US8860633B2 (en) | Method and apparatus for configuring multiple displays associated with a computing system | |
| US7634607B2 (en) | Data transfer control device and electronic instrument | |
| US7266629B2 (en) | Data transfer control device and electronic instrument generating interface signal of signal type according to interface information set in internal register | |
| US20040017333A1 (en) | Universal serial bus display unit | |
| US20110052142A1 (en) | System and Method for Managing Multiple Independent Graphics Sources in an Information Handling System | |
| CN100543664C (en) | Portable computer and control method thereof | |
| KR20060083302A (en) | System and method for performing multi-screen | |
| US20170229093A1 (en) | Display system for an array of video displays | |
| GB2446527A (en) | Multiple displays system and automatically setting display mode method thereof | |
| KR20130040251A (en) | Techniques to control display activity | |
| CN110557580A (en) | Image signal switching and converting device and method | |
| US20080184320A1 (en) | TVOD Processing Device And Computer KVM Switch Thereof | |
| KR101382407B1 (en) | Intranet and internet dividing monitor using screen division | |
| CN112822438A (en) | Real-time control multichannel video manager | |
| CN114401367A (en) | Video switching display method and system based on distributed EDID storage | |
| US7158140B1 (en) | Method and apparatus for rendering an image in a video graphics adapter | |
| US20130021351A1 (en) | Method and system for controlling multimedia monitor | |
| US6782134B2 (en) | Transmission apparatus of video information, transmission system of video information and transmission method of video information | |
| CN111796755B (en) | KVM control system and KVM display switching control method | |
| US6567093B1 (en) | Single semiconductor chip for adapting video signals to display apparatus | |
| KR100616451B1 (en) | Single semiconductor chip for adapting video signals to display apparatus | |
| CN108156398A (en) | A kind of VGA Video Graphics Arrays and its method of work |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |