CN108227256B - Automatic burning method for EDID of liquid crystal display - Google Patents
Automatic burning method for EDID of liquid crystal display Download PDFInfo
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- CN108227256B CN108227256B CN201810100453.XA CN201810100453A CN108227256B CN 108227256 B CN108227256 B CN 108227256B CN 201810100453 A CN201810100453 A CN 201810100453A CN 108227256 B CN108227256 B CN 108227256B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
Abstract
The invention relates to an automatic burning method for EDID of a liquid crystal display. The method adopts a twice burning mode, and specifically comprises the following steps: first burning: the burning program on PC only burns SN; and (3) second burning: the burning program on PC reads the SN burned for the first time, then updates EDID, and finally burns EDID. The method reduces manpower and station positions, improves the efficiency, reduces the production cost, shortens the burning time and does not need manpower maintenance.
Description
Technical Field
The invention relates to an automatic burning method for EDID of a liquid crystal display.
Background
The burning of the EDID of the liquid crystal display is a necessary production process in the production process of the liquid crystal display, and because SN needs to be updated during the burning, the manual code reading by using a code reading gun is a commonly used method at present.
At present, more and more displays with complex functions are provided, the burning time is long if more interfaces are provided, excessive manpower and station positions are occupied, and the production cost is high. The main disadvantages of the conventional EDID burning process for liquid crystal displays are as follows:
1. the burning time is long and the efficiency is low when the interfaces are various; the number of stations is large, and the station maintenance is complex;
2. and the EDID burning is carried out by occupying excessive manpower.
The prior patents are as follows: a method for burning EDID of liquid crystal display (patent number: 201610635602.3) adopts a 2-time burning mode, the first burning is the EDID with fixed SN, which is the burning of a single IC, an IC burning fixture is required to be added, and the burning IC is required to be controlled; the second burning of the display FW requires changing all the displays FW.
In order to overcome the defects that the existing patent needs single burning and needs to change the display FW, the application provides a novel automatic burning method for the liquid crystal display EDID, the display FW does not need to be changed, a burning jig does not need to be added for burning a single IC, and SN is only burned to the fixed position of the EDID for the first time; and directly recording EDID without reading codes from a code reading gun for the second time. Under the condition of only changing the burning Tool, the method has higher efficiency and is easier to realize production automation.
Disclosure of Invention
The invention aims to provide an automatic burning method for the EDID of a liquid crystal display, which reduces manpower and station positions, improves the efficiency, reduces the production cost, shortens the burning time and does not need manpower maintenance.
In order to achieve the purpose, the technical scheme of the invention is as follows: an automatic burning method for EDID of liquid crystal display comprises the following steps,
step S1, first burning: the burning program on PC only burns SN;
step S2, second burning: the burning program on PC reads the SN burned for the first time, then updates EDID, and finally burns EDID.
In an embodiment of the present invention, the step S1 is implemented as follows:
s11, the liquid crystal display arrives at the burning station, the self-plugging jig is inserted, and the liquid crystal display is connected with the burning card;
s12, after obtaining the LCD in-place signal through the serial port I, the program sends an instruction to the MCU of the LCD through the parallel port;
s13, the program obtains the return information of the LCD through the parallel port, and enters different steps through the return information; if the communication is normal, the step S14 is entered, otherwise, the step S110 is entered;
s14, the program controls the code reading gun to read codes through the first serial port, and obtains SN data through the second serial port;
s15, whether the length and the feature of the program Check SN are normal or not, if so, the step S16 is executed, otherwise, the step S111 is executed;
s16, judging the feedback information of step S13, if it supports direct burning, entering step S17, otherwise entering step S18;
s17, directly burning SN: the program generates a command containing SN, and SN data is directly burned into EDID;
s18, indirectly burning SN: the program generates a command containing SN and sends the command to the MCU of the liquid crystal display for indirect burning;
s19, reading the EDID by the program, resolving SN according to the written-in characteristics, comparing the SN with the burnt SN, if the SN is the same as the burnt SN, entering the step S113, otherwise, entering the step S112;
s110, displaying communication abnormity and prompting an operator to perform abnormity processing;
s111, displaying SN data errors and prompting an operator to perform exception handling;
s112, displaying burning SN errors and prompting an operator to perform exception handling;
s113, successfully burning SN data, the program control line body: the self-plugging jig is pulled out, the collector plate is released, and the next liquid crystal display is waited for burning SN action.
In an embodiment of the present invention, the step S2 is implemented as follows:
s21, the liquid crystal display arrives at the burning station, the self-plugging jig is inserted, and the liquid crystal display is connected with the burning card;
s22, after obtaining the LCD in-place signal through the serial port, the program sends an instruction to the MCU of the LCD through the parallel port;
s23, the program obtains the return information of the LCD through the parallel port, and enters different steps through the return information; if the communication is normal, entering S24, otherwise entering S210;
s24, judging the feedback information of S23, if the direct burning is supported, entering S25, otherwise entering S26;
s25, directly reading data containing SN from EDID;
s26, reading data containing SN by sending a command to the MCU of the liquid crystal display;
s27, analyzing SN according to the writing characteristics;
s28, updating SN into EDID to form new EDID;
s29, recording EDID, if recording is successful, entering S212, otherwise, entering S211;
s210, displaying communication abnormity and prompting an operator to perform abnormity processing;
s211, burning SN into EDID according to a mode supported by the liquid crystal display, and prompting an operator to perform exception handling;
s212, successfully burning EDID data, and controlling the line body by the program: and pulling out the self-plugging jig, releasing the collector plate, and waiting for the next operation of burning the EDID on the liquid crystal display.
Compared with the prior art, the invention has the following beneficial effects: the method of the invention reduces manpower and station, improves efficiency, reduces production cost, shortens burning time, does not need manpower maintenance, and has the following specific advantages:
a. saving of code reading gun: with the increase of labor cost, most factories tend to realize automation, the requirement of an automatic line body on a code reading gun is extremely high, the code reading guns which can reach the precision are all 2-3 ten thousand per gun, and 3-4 guns can be saved in each line by using the scheme;
b. time saving: 2.5 seconds of code reading is saved, the productivity can be increased by 50 tables/hour, and the effect is obvious;
c. in addition, compared with other technologies, the present disclosure only updates the recording Tool without changing the display FW or adding a recorder for special recording. The existing station and the existing burning hardware are used, so that equipment (code reading gun) can be saved, and the production efficiency can be improved.
Drawings
FIG. 1 is a diagram of a hardware connection for burning SN according to the present invention for the first time.
FIG. 2 is a flowchart illustrating a first burning SN program according to the present invention.
Fig. 3 is a schematic diagram of hardware connection for recording EDID for the 2 nd time according to the present invention.
FIG. 4 is a flowchart illustrating the procedure of recording EDID program for the 2 nd time according to the present invention.
Detailed Description
The technical scheme of the invention is specifically explained below with reference to the accompanying drawings.
The invention relates to an automatic burning method for EDID of a liquid crystal display, which comprises the following steps,
step S1, first burning: the burning program on PC only burns SN;
step S2, second burning: the burning program on PC reads the SN burned for the first time, then updates EDID, and finally burns EDID.
As shown in fig. 1 and 2, the first burning (burning SN) adds the functions of communication judgment, code reading gun control, effective SN Check, burning leakage prevention, false burning prevention, line control and the like, and comprises the following specific steps:
1. the liquid crystal display arrives at the burning station, the self-plugging jig is inserted, and the liquid crystal display is connected with the burning card;
2. after acquiring the in-place signal of the liquid crystal display through the first serial port, the program sends an instruction to the MCU of the liquid crystal display through the parallel port;
3. the program obtains the return information of the liquid crystal display through the parallel port and enters different steps through the return information. If the communication is normal, entering the next step, otherwise, entering the step 10;
4. the program controls the code reading gun to read codes through the first serial port, and SN data is obtained through the second serial port;
5. judging whether the length and the characteristics of the program Check SN are normal or not, if so, entering the next step, otherwise, entering the step 11;
6. judging the returned information in the step 3, if the returned information supports direct burning, entering the next step, otherwise, entering the step 8;
7. directly burning SN: the program generates a command containing SN, and SN data is directly burned into EDID;
8. indirectly burning SN: the program generates a command containing SN and sends the command to the MCU of the liquid crystal display for indirect burning;
9. reading the EDID by the program, analyzing SN according to the written-in characteristics, comparing with the burnt SN, if the SN is the same as the burnt SN, entering the step 13, otherwise, entering the step 12;
10. displaying communication abnormity and prompting an operator to perform abnormity processing;
11. displaying SN data errors and prompting an operator to perform exception handling;
12. displaying the burning SN error, and prompting an operator to perform exception handling;
13. successfully burning SN data, program control line: the self-plugging jig is pulled out, the collector plate is released, and the next liquid crystal display is waited for burning SN action.
As shown in fig. 3 and 4, the second burning (EDID burning) adds the communication judgment to prevent the failure of EDID burning from destroying SN and the line control, and the specific steps are as follows:
1. the liquid crystal display arrives at the burning station, the self-plugging jig is inserted, and the liquid crystal display is connected with the burning card;
2. after acquiring the in-place signal of the liquid crystal display through the serial port, the program sends an instruction to the MCU of the liquid crystal display through the parallel port;
3. the program obtains the return information of the liquid crystal display through the parallel port and enters different steps through the return information. If the communication is normal, entering the next step, otherwise, entering the step 10;
4. judging the returned information in the step 3, if the returned information supports direct burning, entering the next step, otherwise, entering the step 6;
5. directly reading data containing SN from EDID;
6. reading data containing SN by sending a command to an MCU of the liquid crystal display;
7. analyzing SN according to the writing characteristics;
8, updating SN into EDID to form new EDID;
9. recording EDID, if recording is successful, entering the step 12, otherwise, entering the step 11;
10. displaying communication abnormity and prompting an operator to perform abnormity processing;
11. burning SN into EDID in a mode supported by the liquid crystal display, and prompting an operator to perform exception handling;
12. successfully burning EDID data, and controlling the line body by the program: and pulling out the self-plugging jig, releasing the collector plate, and waiting for the next operation of burning the EDID on the liquid crystal display.
The above are preferred embodiments of the present invention, and all changes made according to the technical scheme of the present invention that produce functional effects do not exceed the scope of the technical scheme of the present invention belong to the protection scope of the present invention.
Claims (1)
1. An automatic burning method for EDID of liquid crystal display comprises the following steps,
step S1, first burning: the burning program on PC only burns SN;
the method comprises the following concrete steps:
s11, the liquid crystal display arrives at the burning station, the self-plugging jig is inserted, and the liquid crystal display is connected with the burning card;
s12, after obtaining the LCD in-place signal through the serial port I, the program sends an instruction to the MCU of the LCD through the parallel port;
s13, the program obtains the return information of the LCD through the parallel port, and enters different steps through the return information; if the communication is normal, the step S14 is entered, otherwise, the step S110 is entered;
s14, the program controls the code reading gun to read codes through the first serial port, and obtains SN data through the second serial port;
s15, whether the length and the feature of the program Check SN are normal or not, if so, the step S16 is executed, otherwise, the step S111 is executed;
s16, judging the feedback information of step S13, if it supports direct burning, entering step S17, otherwise entering step S18;
s17, directly burning SN: the program generates a command containing SN, and SN data is directly burned into EDID;
s18, indirectly burning SN: the program generates a command containing SN and sends the command to the MCU of the liquid crystal display for indirect burning;
s19, reading the EDID by the program, resolving SN according to the written-in characteristics, comparing the SN with the burnt SN, if the SN is the same as the burnt SN, entering the step S113, otherwise, entering the step S112;
s110, displaying communication abnormity and prompting an operator to perform abnormity processing;
s111, displaying SN data errors and prompting an operator to perform exception handling;
s112, displaying burning SN errors and prompting an operator to perform exception handling;
s113, successfully burning SN data, the program control line body: pulling out the self-plugging jig, releasing the collector plate, and waiting for burning SN action of the next liquid crystal display;
step S2, second burning: the burning program on PC reads the SN burned for the first time, then updates EDID, and finally burns EDID;
the method comprises the following concrete steps:
s21, the liquid crystal display arrives at the burning station, the self-plugging jig is inserted, and the liquid crystal display is connected with the burning card;
s22, after obtaining the LCD in-place signal through the serial port, the program sends an instruction to the MCU of the LCD through the parallel port;
s23, the program obtains the return information of the LCD through the parallel port, and enters different steps through the return information; if the communication is normal, entering S24, otherwise entering S210;
s24, judging the feedback information of S23, if the direct burning is supported, entering S25, otherwise entering S26;
s25, directly reading data containing SN from EDID;
s26, reading data containing SN by sending a command to the MCU of the liquid crystal display;
s27, analyzing SN according to the writing characteristics;
s28, updating SN into EDID to form new EDID;
s29, recording EDID, if recording is successful, entering S212, otherwise, entering S211;
s210, displaying communication abnormity and prompting an operator to perform abnormity processing;
s211, burning SN into EDID according to a mode supported by the liquid crystal display, and prompting an operator to perform exception handling;
s212, successfully burning EDID data, and controlling the line body by the program: and pulling out the self-plugging jig, releasing the collector plate, and waiting for the next operation of burning the EDID on the liquid crystal display.
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| CN201810100453.XA CN108227256B (en) | 2018-02-01 | 2018-02-01 | Automatic burning method for EDID of liquid crystal display |
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| CN201810100453.XA CN108227256B (en) | 2018-02-01 | 2018-02-01 | Automatic burning method for EDID of liquid crystal display |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1885400A (en) * | 2005-06-23 | 2006-12-27 | 中强光电股份有限公司 | Extended display identification data content table writing-in method |
| CN106444102A (en) * | 2016-08-05 | 2017-02-22 | 捷星显示科技（福建）有限公司 | LCD EDID burning method |
| CN107492332A (en) * | 2017-08-10 | 2017-12-19 | 捷星显示科技（福建）有限公司 | A kind of lcd productive line test result store method |
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- 2018-02-01 CN CN201810100453.XA patent/CN108227256B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1885400A (en) * | 2005-06-23 | 2006-12-27 | 中强光电股份有限公司 | Extended display identification data content table writing-in method |
| CN106444102A (en) * | 2016-08-05 | 2017-02-22 | 捷星显示科技（福建）有限公司 | LCD EDID burning method |
| CN107492332A (en) * | 2017-08-10 | 2017-12-19 | 捷星显示科技（福建）有限公司 | A kind of lcd productive line test result store method |
Non-Patent Citations (2)
| Title |
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| 多接口显示器EDID快速烧录方法;黄玉琴;《福建电脑》;20170430(第4期);第157-158+99页 * |
| 黄玉琴.多接口显示器EDID快速烧录方法.《福建电脑》.2017,(第4期), * |
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