CN104598325A - Method for burning and verifying EDID (Extended Display Identification Data) of display module - Google Patents
Method for burning and verifying EDID (Extended Display Identification Data) of display module Download PDFInfo
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- CN104598325A CN104598325A CN201510069705.3A CN201510069705A CN104598325A CN 104598325 A CN104598325 A CN 104598325A CN 201510069705 A CN201510069705 A CN 201510069705A CN 104598325 A CN104598325 A CN 104598325A
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Abstract
The invention discloses a method for burning and verifying EDID (Extended Display Identification Data) of a display module. The method comprises the following steps of carrying out EDID editing by utilizing an upper computer and saving the edited EDID as a script file; carrying out data interaction between a communication protocol and an ARM (Advanced RISC Machines) core module after the script file is parsed into the communication protocol; sending the parsed EDID to an FPGA (Field-Programmable Gate Array) signal processing module by the ARM core module; sending the EDID to the display module through an FPGA signal output module by the FPGA signal processing module, reading the EDID of the display module and feeding the EDID back to the upper computer for comparison. The method disclosed by the invention can be suitable for burning and verifying of the EDID of various physical signal interfaces and display modules in various specifications, and the problem that an FPGA program is frequently compiled and upgraded for responding to regulation difference of the EDID of the various physical signal interfaces and the display modules in various specifications at present can be solved.
Description
Technical field
The present invention relates to liquid crystal module technical field of measurement and test, refer to a kind of EDID data recording method of calibration showing module particularly.
Background technology
EDID (Extended Display Identification Data, extending display identification data) a kind of display format specification being widely used in display module of being that International video frequency electronic standard association is organized to set up, it contains as supplier information, factory default is put, maximum image, color are arranged, frequency range and supported resolution etc. are about the parameter of display and performance thereof.The Main Function of EDID data allows image output device can export suitable picture signal to display module, and display module all will be tested through strict EDID read-write capability before dispatching from the factory.
According to different application demands, display module need adopt different physical signalling interfaces, as LVDS (Low Voltage Differential Signal, low-voltage differential signal), DP (DisplayPort, a kind of digital visual interface standard), MIPI (Mobile IndustryProcessor Interface, mobile Industry Processor Interface) etc., physical signalling interface is different, and the EDID regulative mode of display module is not identical yet; In addition, same physical signalling interface, the EDID regulative mode of the display module of different size often also also exists difference.At present, the EDID of display module is regulated and is generally undertaken by display module testing apparatus, need to write specific FPGA (Field-Programmable GateArray for display module to be tested, i.e. field programmable gate array) program, there is the deficiency of the following aspects in this control method:
1) when EDID regulates flow process to change, need amendment FPGA program, then download to the time that display module testing apparatus needs at substantial;
2) show module specification numerous, FPGA program needs frequent change, and FPGA program version is numerous, is inconvenient to manage.
Summary of the invention
Object of the present invention is exactly to provide a kind of EDID data recording method of calibration showing module, the method can be applicable to the EDID data recording verification of display module of various physical signalling interface, all size, can solve current in order to tackle various physical signalling interface, the EDID of display module of all size accord a difference and frequently write, the problem of FPGA program of upgrading.
For realizing this object, the EDID data recording method of calibration of the display module designed by the present invention, it comprises the steps:
Step 101: the extending display identification data Scripting Edition interface entering host computer, select the extending display identification data script file that will edit or newly-built extending display identification data script file as required, the standard extension display identification data that user wants to be written in liquid crystal module is write in the extending display identification data edition hurdle of file destination, then the order of extending display identification data reading operation is write at the extending display identification data reading operation formula bar of file destination, the order of extending display identification data write operation is write at the extending display identification data write operation formula bar of file destination, by the standard extension display identification data of above-mentioned editor after editor, the order of extending display identification data reading operation and extending display identification data write operation command context are saved in above-mentioned extending display identification data script file, above-mentioned file destination is the extending display identification data script file or newly-built extending display identification data script file that will edit,
Step 102: in host computer by step 101 stored in standard extension display identification data be converted to corresponding extending display identification data reading operation order and the order of extending display identification data write operation, and the extending display identification data reading operation order of above-mentioned correspondence become communication protocol to be transported to ARM (Advanced RISC Machines) nucleus module with extending display identification data write operation order real time parsing, above-mentioned communication protocol is resolved to the order of extending display identification data reading operation and the order of extending display identification data write operation by ARM nucleus module, the extending display identification data reading operation order that ARM nucleus module parses and extending display identification data write operation command transfer are to FPGA signal processing module, FPGA signal processing module performs the above-mentioned extending display identification data reading operation order that parses and the order of extending display identification data write operation, thus the extending display identification data in liquid crystal module are adjusted,
Step 103: the extending display identification data after adjustment are transferred to host computer by FPGA signal processing module and ARM nucleus module by liquid crystal module successively;
Step 104: after the adjustment that liquid crystal module transmits by host computer in extending display identification data and step 101 stored in standard extension display identification data compare, if extending display identification data are consistent with standard extension display identification data after adjustment, then terminate whole extending display identification data recording checking process, if inconsistent, user manually determines whether re-start above-mentioned extending display identification data recording checking process.
Beneficial effect of the present invention is:
The inventive method directly utilizes host computer to carry out the editor of the extending display identification data read-write operation script command of liquid crystal module, directly extending display identification data recording and verification are carried out to liquid crystal module by existing liquid crystal module testing apparatus, without the need to the physical interface according to liquid crystal module, (the inventive method is revised as the extending display identification data read-write method being cured to FPGA in the past and edits in the script file of upper layer software (applications) the corresponding FPGA program of the different bespoke of specification, in the past two liquid crystal module were needed to the FPGA program of two versions, only need now two script files just can realize, without the need to revising FPGA program), a large amount of FPGA program development debugging can be saved, update time.
Accompanying drawing explanation
Fig. 1 is the johning knot composition realizing liquid crystal module testing apparatus of the present invention;
Fig. 2 is process flow diagram of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
Method of the present invention based on hardware configuration, as shown in Figure 1, comprise the host computer, ARM nucleus module, FPGA signal processing module and the liquid crystal module that connect successively.
The EDID data recording method of calibration of the display module of the present invention's design, it comprises the steps:
Step 101: the extending display identification data Scripting Edition interface entering host computer, select the extending display identification data script file that will edit or newly-built extending display identification data script file as required, the standard extension display identification data that user wants to be written in liquid crystal module is write in the extending display identification data edition hurdle of file destination, then the order of extending display identification data reading operation is write at the extending display identification data reading operation formula bar of file destination, the order of extending display identification data write operation is write at the extending display identification data write operation formula bar of file destination, by the standard extension display identification data of above-mentioned editor after editor, the order of extending display identification data reading operation and extending display identification data write operation command context are saved in above-mentioned extending display identification data script file (the extending display identification data script file that will edit or newly-built extending display identification data script file), above-mentioned file destination is the extending display identification data script file or newly-built extending display identification data script file that will edit,
Step 102: in host computer by step 101 stored in standard extension display identification data be converted to corresponding extending display identification data reading operation order and the order of extending display identification data write operation, and the extending display identification data reading operation order of above-mentioned correspondence become communication protocol to be transported to ARM nucleus module (namely ARM nucleus module reads extending display identification data operation commands according to communication protocol) with extending display identification data write operation order real time parsing, above-mentioned communication protocol is resolved to the order of extending display identification data reading operation and the order of extending display identification data write operation by ARM nucleus module, the extending display identification data reading operation order that ARM nucleus module parses and extending display identification data write operation command transfer are to FPGA signal processing module, FPGA signal processing module performs the above-mentioned extending display identification data reading operation order that parses and the order of extending display identification data write operation, thus the extending display identification data in liquid crystal module are adjusted,
Step 103: the extending display identification data after adjustment are transferred to host computer by FPGA signal processing module and ARM nucleus module by liquid crystal module successively;
Step 104: after the adjustment that liquid crystal module transmits by host computer in extending display identification data and step 101 stored in standard extension display identification data compare, if extending display identification data are consistent with standard extension display identification data after adjustment, then terminate whole extending display identification data recording checking process, if inconsistent, user manually determines whether re-start above-mentioned extending display identification data recording checking process.
In the step 104 of technique scheme, after the adjustment that liquid crystal module transmits by host computer in extending display identification data and step 101 stored in the process that compares of standard extension display identification data in, host computer ejects extending display identification comparing dialog box, when adjusting rear extending display identification data and standard extension display identification data is inconsistent, mark red discrepant data, prompting user comparison result.
In technique scheme, described extending display identification data script file (the extending display identification data script file that will edit or newly-built extending display identification data script file) is text.
In technique scheme, communication protocol in described step 102 is that (above-mentioned User Datagram Protoco (UDP) is easy to use for User Datagram Protoco (UDP), what whole software communication system used is all User Datagram Protoco (UDP), the communication protocol in the inventive method be a subset of software communication system).
In technique scheme, the extending display identification data Scripting Edition interface of host computer described in step 1 comprises extending display identification data edition hurdle, extending display identification data reading operation formula bar and extending display identification data write operation formula bar, the wherein extending display identification data edition hurdle standard extension display identification data wanting to be written in liquid crystal module for writing user, extending display identification data reading operation formula bar is used for writing the order of extending display identification data reading operation, extending display identification data write operation formula bar is used for writing the order of extending display identification data write operation.
In technique scheme, the form of described extending display identification data reading operation order is: register address, data length in the total length of command word, read command, liquid crystal module in the iic bus address of extending display identification Data Control chip, liquid crystal module in extending display identification Data Control chip;
The form of described extending display identification data write operation order is: register address, data length, data in the total length of command word, write order, liquid crystal module in the iic bus address of extending display identification Data Control chip, liquid crystal module in extending display identification Data Control chip;
The length that described data length refers to the data of the register write in liquid crystal module in extending display identification Data Control chip or the length of data that will read in the register from liquid crystal module in extending display identification Data Control chip;
Total length length shared by the IIC address of extending display identification Data Control chip in liquid crystal module of described read command adds length shared by the data length that length shared by the register address in liquid crystal module in extending display identification Data Control chip adds in register;
The total length of described write order shared by the IIC address of extending display identification Data Control chip in liquid crystal module length, add in liquid crystal module in extending display identification Data Control chip shared by register address length, add in register shared by data length length, add in register shared by data length;
Data in described extending display identification data write operation command format are the data that extending display identification data read-write operation is corresponding.
In technique scheme, at extending display identification data read or write formula bar, need time delay between adjacent two orders, delay time is set to 100 milliseconds herein.
The content that this instructions is not described in detail belongs to the known prior art of professional and technical personnel in the field.
Claims (6)
1. show an EDID data recording method of calibration for module, it is characterized in that, it comprises the steps:
Step 101: the extending display identification data Scripting Edition interface entering host computer, select the extending display identification data script file that will edit or newly-built extending display identification data script file as required, the standard extension display identification data that user wants to be written in liquid crystal module is write in the extending display identification data edition hurdle of file destination, then the order of extending display identification data reading operation is write at the extending display identification data reading operation formula bar of file destination, the order of extending display identification data write operation is write at the extending display identification data write operation formula bar of file destination, by the standard extension display identification data of above-mentioned editor after editor, the order of extending display identification data reading operation and extending display identification data write operation command context are saved in above-mentioned extending display identification data script file, above-mentioned file destination is the extending display identification data script file or newly-built extending display identification data script file that will edit,
Step 102: in host computer by step 101 stored in standard extension display identification data be converted to corresponding extending display identification data reading operation order and the order of extending display identification data write operation, and become communication protocol to be transported to ARM nucleus module with extending display identification data write operation order real time parsing the extending display identification data reading operation order of above-mentioned correspondence, above-mentioned communication protocol is resolved to the order of extending display identification data reading operation and the order of extending display identification data write operation by ARM nucleus module, the extending display identification data reading operation order that ARM nucleus module parses and extending display identification data write operation command transfer are to FPGA signal processing module, FPGA signal processing module performs the above-mentioned extending display identification data reading operation order that parses and the order of extending display identification data write operation, thus the extending display identification data in liquid crystal module are adjusted,
Step 103: the extending display identification data after adjustment are transferred to host computer by FPGA signal processing module and ARM nucleus module by liquid crystal module successively;
Step 104: after the adjustment that liquid crystal module transmits by host computer in extending display identification data and step 101 stored in standard extension display identification data compare, if extending display identification data are consistent with standard extension display identification data after adjustment, then terminate whole extending display identification data recording checking process, if inconsistent, user manually determines whether re-start above-mentioned extending display identification data recording checking process.
2. the EDID data recording method of calibration of display module according to claim 1, it is characterized in that: in described step 104, after the adjustment that liquid crystal module transmits by host computer in extending display identification data and step 101 stored in the process that compares of standard extension display identification data in, host computer ejects extending display identification comparing dialog box, when adjusting rear extending display identification data and standard extension display identification data is inconsistent, mark red discrepant data, prompting user comparison result.
3. the EDID data recording method of calibration of display module according to claim 1, is characterized in that: described extending display identification data script file is text.
4. the EDID data recording method of calibration of display module according to claim 1, is characterized in that: the communication protocol in described step 102 is User Datagram Protoco (UDP).
5. the EDID data recording method of calibration of display module according to claim 1, it is characterized in that: the extending display identification data Scripting Edition interface of host computer described in step 1 comprises extending display identification data edition hurdle, extending display identification data reading operation formula bar and extending display identification data write operation formula bar, the wherein extending display identification data edition hurdle standard extension display identification data wanting to be written in liquid crystal module for writing user, extending display identification data reading operation formula bar is used for writing the order of extending display identification data reading operation, extending display identification data write operation formula bar is used for writing the order of extending display identification data write operation.
6. show the EDID data recording method of calibration of module according to claim 1, it is characterized in that: the form of described extending display identification data reading operation order is: register address, data length in the total length of command word, read command, liquid crystal module in the iic bus address of extending display identification Data Control chip, liquid crystal module in extending display identification Data Control chip;
The form of described extending display identification data write operation order is: register address, data length, data in the total length of command word, write order, liquid crystal module in the iic bus address of extending display identification Data Control chip, liquid crystal module in extending display identification Data Control chip;
The length that described data length refers to the data of the register write in liquid crystal module in extending display identification Data Control chip or the length of data that will read in the register from liquid crystal module in extending display identification Data Control chip;
Total length length shared by the IIC address of extending display identification Data Control chip in liquid crystal module of described read command adds length shared by the data length that length shared by the register address in liquid crystal module in extending display identification Data Control chip adds in register;
The total length of described write order shared by the IIC address of extending display identification Data Control chip in liquid crystal module length, add in liquid crystal module in extending display identification Data Control chip shared by register address length, add in register shared by data length length, add in register shared by data length;
Data in described extending display identification data write operation command format are the data that extending display identification data read-write operation is corresponding.
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| CN107133078A (en) * | 2017-03-30 | 2017-09-05 | 广州视源电子科技股份有限公司 | Extending display identification data verification method and system |
| CN109461395A (en) * | 2018-11-07 | 2019-03-12 | 中国电子科技集团公司第二十八研究所 | A kind of display facility information hand-held analyzer and application method |
| CN116721614A (en) * | 2023-06-13 | 2023-09-08 | 广东高云半导体科技股份有限公司 | EDID information acquisition device, liquid crystal display screen detection device and method |
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