CN1595353A - Method for changing extended display identification data (EDID) in memory by using software program - Google Patents
Method for changing extended display identification data (EDID) in memory by using software program Download PDFInfo
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- CN1595353A CN1595353A CN 03156574 CN03156574A CN1595353A CN 1595353 A CN1595353 A CN 1595353A CN 03156574 CN03156574 CN 03156574 CN 03156574 A CN03156574 A CN 03156574A CN 1595353 A CN1595353 A CN 1595353A
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- software program
- identification data
- display identification
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Abstract
The invention relates to a software program, which modifies and writes the EDID-VESA (Extended Display Identification Data) into the internal memory chip. Using the software program, the EDID can be modified without plugging out the chip, which makes the VGA (video graph array) controller light the LCD (Liquid Crystal Display) panel of various manufacturers.
Description
Technical field
The present invention a kind ofly can upgrade (update) a kind of method to the memory chip that write with extending display identification data (EDID).Especially refer to a kind ofly see through that software is program control will to be extended the display identification data renewal and write, and internal memory must not pulled up a kind of method of replacing.
Background technology
Each liquid crystal screen display all has it to extend display identification data (EDID), extending display identification data (EDID) is a kind of industrywide standard that VESA organizes to set up, this identification data is put down in writing all opering characteristics of electric apparatus of relevant display module, its purpose provides a kind of communications protocol of computer system at transmission display data channel (DDC), make identification specification that computer system can be correct, obtain correct signal with the controlling and driving panel of LCD.And extend display identification data in the industry cycle in, normally be stored in the electric current Erasable ﹠Programmable ROM (EEPROMElectrically Erasable Programmable Read-Only Memory), this ROM (read-only memory) then is fixed on the motherboard, that is single motherboard only has single extension display identification data, if when changing different liquid crystal screen display panels, very possible because extend not matching of display identification data, and the situation that causes panel of LCD not light, or can't demonstrate distinctive setting of this label panel of LCD or effect.If not change the motherboard that tool stores the internal memory of the extension display identification data that can mate this moment, be this to be stored the internal memory that extends display identification data take off the burned extension display identification data that mates; If finely tune the thin portion parameter setting of this liquid crystal screen display panel, also internal memory must be taken off burned this internal memory of the extension of displaying identified data file that will edit each parameter setting again, be inconvenient really, and cost of idleness and time.
I think and this invention eventually promptly to this phenomenon thinking solution, can see through program control extension display identification data, to solve the above problems.
Summary of the invention
Fundamental purpose of the present invention provides a kind of method, is to utilize software will extend in the display identification data write memory, and will internal memory does not take off and reach change and extend display identification data.
According to above-mentioned purpose, software program of the present invention is to see through System Management Bus (SMBus SystemManagement Bus or I2C is bus) LCD visual graphic array controller (LCD VGAcontroller) is got in touch, and from electric current Erasable ﹠Programmable ROM (EEPROM ElectricallyErasable Programmable Read-Only Memory) the extension display identification data of the corresponding display device of access (display device), this software has a plurality of default available settings of extension of displaying identified data file, and increase the extension of displaying identified data file that uses other specific standard newly, and make the edit-modify of thin portion parameter at each archives.And can see through this program, and select the extension of displaying identified data file of coupling to be stored in this ROM (read-only memory), make computer system can obtain opering characteristic of electric apparatus data and correct this liquid crystal screen display panel of control.This method comprises the following step:
(1) carry out this software program, test chip also activates writing mechanism;
The extension of displaying identified data file of (2) selection coupling;
(3) carry out write activity, close writing mechanism.
Desire to reach aforementioned purpose for making your juror of office can understand the present invention really, and the required technological means that possesses, describe in detail for an embodiment now as after, sincerely see also.
Description of drawings
Fig. 1 is the hardware environment of the embodiment of the invention.
Fig. 2 is the method flow of the embodiment of the invention.
Fig. 3 is the operation-interface window picture of the embodiment of the invention.
Fig. 4 is the window picture of the embodiment of the invention when updating files.
In the accompanying drawing:
21-judges chipset
23-opens writing mechanism
25-will extend display identification data and write
27-closes writing mechanism
The option of 32-standard 800*600 picture
The option of 34-standard 1024*768 Duel pixel picture
22-reads SMBus and GPIO data
24-selects the extension of displaying identified data file of coupling
The 26-debug
The option of 31-standard 640*480 picture
The option of 33-standard 1024*768 Single pixel picture
Other option of 35-
Embodiment
See also Fig. 1, LCD visual graphic array controller (LCD VGA controller) is the System Management Bus (SMBusor I2CBus) that sees through itself digitized video output interface (Digital Video Output Interface) the extension display identification data that comes the corresponding display module of access obtaining the initialization data lighting suitable panel of LCD, extends display identification data and just can wait each project to control different panel of LCD at the brightness adjustment by changing.
Consult Fig. 2 again, be program control flow process of software of the present invention and operation-interface window, whether this program detecting chipset (chip set) earlier is VIA686B or Intel815 21, read GPIO data (GeneralPurpose Control Register Base) and system management input/output bus data (SMBus I/OBase) 22 then, after obtaining above-mentioned data, can activate writing mechanism 23, select the extension of displaying identified data file 24 of coupling this moment, selected extension of displaying identified data file is write 25, and execution debug 26, correctly then close writing mechanism 27, mistake is then got back to write step 25.
Consult Fig. 3 again, it is the operation-interface window picture of software program of the present invention, there are a plurality of default recognition data files available in this window, comprise standard 640*480 picture 31, standard 800*600 picture 32, standard 1024*768 Single pixel picture 33 and 34, also can select other bin shelves by other option 35, behind the extension of displaying identified data file of selected and liquid crystal screen display coupling, software of the present invention just can be stored in the recognition data file in the internal memory, this moment, the software window picture can show the filename and the storage progress of storage, as shown in Figure 4.
Wherein extend display identification data and comprise many thin portions parameter, can adjust for setting, as address 15h is that maximal value, the address 17h of the horizontal image size of definition then defines and show the Gamma value that transmits etc., these parameter data all are contained in the bin archives, as adjusting each pre-set parameter, after promptly editor revises these bin shelves and stores, can select to write the extension display identification data file that edit-modify is crossed by other option 35 of above-mentioned software interface.
So, need not take off internal memory and can change and extend display identification data and differentiate for computer system and use lighting the panel of LCD of various labels, and carefully portion adjusts each parameter of editor, reaches with slotting promptly apparent (Plug ﹠amp; Display) function.
The above only is preferred embodiment of the present invention, when can not with qualification scope of the invention process, promptly the equalization of being done according to the present patent application claim generally changes and modifies, and all should still belong in the scope that patent of the present invention contains.
Claims (3)
1. one kind is used the method for extending display identification data in the software program change internal memory, it is characterized in that, this software program is selected the data file of coupling via user's interface, wherein alternative archives comprise a plurality of default extension of displaying identified data files and other archives that can increase newly voluntarily, and the method comprises the following step:
(1) carry out this software program, test chip also activates writing mechanism;
The extension of displaying identified data file of (2) selection coupling;
(3) carry out write activity, close writing mechanism.
2. the method for extending display identification data in the use software program change internal memory as claimed in claim 1 is characterized in that, its alternative newly-increased voluntarily archives are archives that different labels provide.
3. the method for extending display identification data in the use software program change internal memory as claimed in claim 1 is characterized in that, its alternative newly-increased voluntarily archives are archives of the thin portion of edit-modify parameter setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03156574 CN1595353A (en) | 2003-09-09 | 2003-09-09 | Method for changing extended display identification data (EDID) in memory by using software program |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03156574 CN1595353A (en) | 2003-09-09 | 2003-09-09 | Method for changing extended display identification data (EDID) in memory by using software program |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1595353A true CN1595353A (en) | 2005-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03156574 Pending CN1595353A (en) | 2003-09-09 | 2003-09-09 | Method for changing extended display identification data (EDID) in memory by using software program |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101329853B (en) * | 2007-06-20 | 2010-07-14 | 大同股份有限公司 | Portable recorder for EDID |
| CN101393732B (en) * | 2007-09-18 | 2010-09-01 | 中强光电股份有限公司 | Interface device and method for writing spreading display recognition data |
| CN102455963A (en) * | 2010-10-29 | 2012-05-16 | 环旭电子股份有限公司 | Computer system, and method for accessing display identification data and control system thereof |
| US8269785B2 (en) | 2007-07-27 | 2012-09-18 | Coretronic Corporation | Interface apparatus and method of writing extended display identification data |
| TWI460653B (en) * | 2012-08-14 | 2014-11-11 | ||
| CN114205660A (en) * | 2020-09-18 | 2022-03-18 | 明基智能科技（上海）有限公司 | Screen resolution adjusting method and display device thereof |
-
2003
- 2003-09-09 CN CN 03156574 patent/CN1595353A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101329853B (en) * | 2007-06-20 | 2010-07-14 | 大同股份有限公司 | Portable recorder for EDID |
| US8269785B2 (en) | 2007-07-27 | 2012-09-18 | Coretronic Corporation | Interface apparatus and method of writing extended display identification data |
| CN101393732B (en) * | 2007-09-18 | 2010-09-01 | 中强光电股份有限公司 | Interface device and method for writing spreading display recognition data |
| CN102455963A (en) * | 2010-10-29 | 2012-05-16 | 环旭电子股份有限公司 | Computer system, and method for accessing display identification data and control system thereof |
| CN102455963B (en) * | 2010-10-29 | 2015-02-04 | 环旭电子股份有限公司 | Computer system, and control system for accessing display identification data |
| TWI460653B (en) * | 2012-08-14 | 2014-11-11 | ||
| CN114205660A (en) * | 2020-09-18 | 2022-03-18 | 明基智能科技（上海）有限公司 | Screen resolution adjusting method and display device thereof |
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