CN101702299A - System and method for identifying LCD module - Google Patents
System and method for identifying LCD module Download PDFInfo
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- CN101702299A CN101702299A CN200910235909A CN200910235909A CN101702299A CN 101702299 A CN101702299 A CN 101702299A CN 200910235909 A CN200910235909 A CN 200910235909A CN 200910235909 A CN200910235909 A CN 200910235909A CN 101702299 A CN101702299 A CN 101702299A
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Abstract
The invention discloses an LCD module identifying system which comprises an LCD module and an ID reading module, wherein the LCD module further comprises an ID pin used for outputting certain electric characteristics when the LCD module is under working voltage; and the ID reading module is used for detecting the ID pin of the LCD module so as to identify the type of the LCD module according to the output electric characteristics of the ID pin. The invention also discloses an identifying method of the LCD module. Because the invention can identify the LCD module through detecting the ID pin of the LCD module and can definitely distinguish the LCD module without reading an ID register, the identifying mode is not limited by a display mode and not influenced by charge accumulation, thus the invention is beneficial to the compatibility of LCDs and can improve the identification accuracy of the LCDs.
Description
Technical field
The present invention relates to LCD module recognition technology, relate in particular to a kind of LCD (Liquid CrystalDisplay, LCD) module identification method and system.
Background technology
Portable set manufacturer is in design during a product, in order to supply or problem such as performance, parts such as LCD generally had two cover or above schemes, and one is main, and other in support.Therefore, for the convenience of version management, product volume production and after sale service, need carry out the compatibility design to the LCD module.
At present, the following method of the general employing of the softwarecompatible of LCD: the ID that reads module in regular turn with Different L CD module ID recognition function in several schemes, up to the identify label sign indicating number of reading (Identity, ID) consistent with in the scheme certain, carry out corresponding initialization then.Yet, there is certain defective in this method: the integrated circuit of some LCD modules (Integrated circuit, IC) not under all display modes, can read ID, for example, (Micro Control Unit MCU) can read ID under the pattern to the IC that has, still at red-green-blue (red-green-blue at micro-control unit, RGB) can't read under the pattern, otherwise have; In addition, IC is because the defective of itself, under some extreme case, possibly can't read correct ID, for example, the IC that has is after sleeping (sleep in) fast and waking (sleep out) up, because the electric charge accumulation may occur reading correct ID, can't correct initialized situation thereby occur.Therefore, the ID register of the existing LCD of dependence module carries out the method that the LCD module is discerned, and be unfavorable for the compatibility of LCD module, and recognition accuracy is not high.
Summary of the invention
In view of this, fundamental purpose of the present invention is to provide a kind of LCD module recognition system and method, helps the compatibility of LCD module, and the recognition accuracy that can improve the LCD module.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of LCD module recognition system comprises LCD module and ID read module, and described LCD module further comprises the ID pin, wherein,
The ID pin of described LCD module is used for externally exporting certain electrical property feature when the LCD module is in operating voltage;
Described ID read module is used to detect the ID pin of described LCD module, thereby according to the electric characteristics that described ID pin is externally exported, discerns the type of described LCD module.
Described ID read module also is used for the type according to the LCD module of identification, and notice LCD initialization module carries out initialization according to the type of described LCD module.
The ID pin of the described LCD module externally electrical property feature of output is a high-low level.
The LCD module is included in the ID pin of externally exporting certain electrical property feature when the LCD module is in operating voltage, and this method comprises:
The ID read module detects the ID pin of LCD module, thereby according to the electric characteristics that described ID pin is externally exported, discerns the type of described LCD module.
After the type of ID read module identification LCD module, also comprise step: ID read module notice LCD initialization module carries out initialization according to the type of described LCD module.
The ID pin of the described LCD module externally electrical property feature of output is a high-low level.
LCD module recognition system of the present invention and method are provided with one group of ID pin on the LCD module, this ID pin keeps certain output when the LCD module is in normal operating conditions, thereby just can discern this LCD module by the ID pin that detects the LCD module.Because the present invention just can discern this LCD module by the ID pin that detects the LCD module, need not to read the ID register and just can clearly distinguish the LCD module, this recognition method is not subjected to the restriction of display mode, and be not subjected to the electric charge effect of accumulation, so, the present invention helps the compatibility of LCD module, and can improve the recognition accuracy of LCD module.
Description of drawings
Fig. 1 is a LCD module recognition system structural representation of the present invention;
Fig. 2 is the synoptic diagram of a kind of LCD module ID pin output " 10 ";
Fig. 3 is a LCD module identification method schematic flow sheet of the present invention.
Embodiment
Basic thought of the present invention is: one group of ID pin is set on the LCD module, and this ID pin keeps certain output when the LCD module is in normal operating conditions, thereby just can discern this LCD module by the ID pin that detects the LCD module.
Fig. 1 is a LCD module recognition system structural representation of the present invention, and as shown in Figure 1, LCD module recognition system of the present invention comprises: LCD module and ID read module.Wherein,
The LCD module comprises the ID pin, is used for externally exporting certain electrical property feature when the LCD module is in operating voltage, and described electrical property feature is a high-low level.
Among the present invention, the LCD module comprises: drive IC, LCD MODULE (Liquid Crystal DisplayModule, LCM) and backlight etc., its external interface is except Serial Peripheral Interface (SPI) (serial peripheralinterface, SPI) control signal wire, data line, Data Control line etc., also comprise one group of ID pin, LCD spare be in operating voltage the time the external different electrical property feature of output, described ID pin comprises at least 1 pin.
Generally, portable set production firm will determine several sets of plan of LCD module in the design initial of a product, again to different module manufacturers customize realize different schemes LCD module pin to pin (pin-to-pin) compatibility.In this process, can customize one group of ID pin to LCD module manufacturer.Subsequent software can be exported the initialization flow process that enters dissimilar LCD modules according to this difference of organizing the ID pin on realizing.
The ID read module is used to detect the ID pin of described LCD module, thereby according to the electric characteristics that described ID pin is externally exported, discerns described LCD module.
Identification LCD module refers generally to discern the type of LCD module, comprise that with the LCD module 2 ID pins are example, wherein 2 ID pin inside all are connected to resistance, and resistance is coupled with voltage or ground connection when the LCD module is in normal operating conditions, and the ID pin externally electrical property feature of output is a high-low level.High level represents that with 1 low level represents that with 0 like this, 00,01,10 and 11 can represent 4 kinds of different types in the module respectively.
Table 1 is the ID pin when comprising 2 pins, a kind of corresponded manner of ID pin and LCD module type:
| The LCD module | The ID pin |
| Type one | ??00 |
| Type two | ??01 |
| Type three | ??10 |
| Type four | ??11 |
Table 1
Fig. 2 is the synoptic diagram of a kind of LCD module ID pin output " 10 ", by changing the wiring of ID pin in the LCD module, can reach wherein a kind of effect of output " 00,01,10,11 ".
The ID read module also is used for the type according to the LCD module of identification, and notice LCD initialization module carries out initialization according to the type of described LCD module.Concrete, after the ID read module detects the ID pin of LCD module, send corresponding initialization directive according to the result who reads to the LCD initialization module, choose corresponding initialization scheme by the LCD initialization module according to the instruction of ID read module transmission the LCD module is carried out initialization, the LCD initialization module generally comprises at least 2 kinds of different initialization scheme.
Fig. 3 is a LCD module identification method schematic flow sheet of the present invention, and as shown in Figure 3, the ID pin by the LCD module comes the concrete steps of quick identification LCD module to comprise:
Step 301:ID read module detects the ID pin of LCD module, and promptly the ID pin from the LCD module reads ID.
During system initialization, except (General Purpose InputOutput, GPIO) grade is carried out initialization, also can define LCD module array of overall importance, the content that example is as shown in table 1 to register, general input and output.
Step 302:ID read module is judged the ID pin that detects the LCD module, and whether promptly read ID successful, if, execution in step 303; Otherwise flow process finishes.
Step 303:ID read module is discerned the type of described LCD module according to the electric characteristics of the external output of ID pin of LCD module.
Generally speaking, the type of LCD module is discerned the type that refers to mate described LCD module.
Step 304:ID read module judges whether the type of identification LCD module is successful, if, execution in step 305; Otherwise flow process finishes.
Here, the ID read module judges whether the type of identification LCD module judges promptly successfully whether match-type is successful.
Step 305:ID read module notice LCD initialization module carries out initialization according to the type of described LCD module.
Concrete, the ID read module is sent to the LCD initialization module according to the type of ID pin correspondence with initialization directive, and the LCD initialization module is selected initialize mode according to initialization directive, and the LCD module is carried out initialization.
In the practical application, can also be with the scheme of maximum likelihood as default type, when the ID read module mates or read failure, the ID read module sends the LCD initialization directive to initialization module according to default type, the LCD initialization module is according to initialization directive, select corresponding initialize mode, the LCD module is carried out concrete initialization.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (6)
1. a LCD module recognition system is characterized in that, this system comprises LCD module and ID read module, and described LCD module further comprises the ID pin, wherein,
The ID pin of described LCD module is used for externally exporting certain electrical property feature when the LCD module is in operating voltage;
Described ID read module is used to detect the ID pin of described LCD module, thereby according to the electric characteristics that described ID pin is externally exported, discerns the type of described LCD module.
2. LCD module recognition system according to claim 1 is characterized in that,
Described ID read module also is used for the type according to the LCD module of identification, and notice LCD initialization module carries out initialization according to the type of described LCD module.
3. LCD module recognition system according to claim 1 is characterized in that, the ID pin of the described LCD module externally electrical property feature of output is a high-low level.
4. a LCD module identification method is characterized in that, the LCD module is included in the ID pin of externally exporting certain electrical property feature when the LCD module is in operating voltage, and this method comprises:
The ID read module detects the ID pin of LCD module, thereby according to the electric characteristics that described ID pin is externally exported, discerns the type of described LCD module.
5. LCD module identification method according to claim 4 is characterized in that, after the type of ID read module identification LCD module, also comprises step: ID read module notice LCD initialization module carries out initialization according to the type of described LCD module.
6. LCD module identification method according to claim 4 is characterized in that, the ID pin of the described LCD module externally electrical property feature of output is a high-low level.
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| CN200910235909A CN101702299A (en) | 2009-10-29 | 2009-10-29 | System and method for identifying LCD module |
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| CN200910235909A CN101702299A (en) | 2009-10-29 | 2009-10-29 | System and method for identifying LCD module |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102164193A (en) * | 2011-01-21 | 2011-08-24 | 惠州Tcl移动通信有限公司 | Electronic device, manufacturing method thereof and method for identifying and driving display screen |
| CN102254539A (en) * | 2010-05-18 | 2011-11-23 | 苏州安可信通信技术有限公司 | Adaptive method for screen driver of portable electronic equipment and electronic equipment |
| WO2012058891A1 (en) * | 2010-11-04 | 2012-05-10 | 中兴通讯股份有限公司 | Method, device and terminal for identifying lcd screen |
| CN106227559A (en) * | 2016-07-14 | 2016-12-14 | 广东欧珀移动通信有限公司 | A kind of module loading method and terminal unit |
| CN106556752A (en) * | 2015-09-25 | 2017-04-05 | 鸿富锦精密工业(武汉)有限公司 | GPIO interface circuit for detecting |
| CN107610626A (en) * | 2017-08-31 | 2018-01-19 | 深圳市国显科技有限公司 | A kind of detection method of the ID detection tools of LCM |
| CN108288447A (en) * | 2017-12-28 | 2018-07-17 | 江西合力泰科技有限公司 | A kind of test method for SPI interface |
| CN108510923A (en) * | 2018-03-30 | 2018-09-07 | 武汉精立电子技术有限公司 | A kind of detection liquid crystal module ID pins open the device of short circuit |
| CN109324242A (en) * | 2018-08-24 | 2019-02-12 | 广东南控电力有限公司 | A kind of new energy power station fault identification detection system |
| CN110141221A (en) * | 2019-06-28 | 2019-08-20 | 联想(北京)有限公司 | A kind of monitoring device, method and system |
| CN112114764A (en) * | 2020-09-21 | 2020-12-22 | 杭州秦商鞅科技有限公司 | Computer extended display screen system |
| CN114283717A (en) * | 2021-12-02 | 2022-04-05 | 深圳同兴达科技股份有限公司 | Method for avoiding power-on and power-off burn of display module |
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| WO2012058891A1 (en) * | 2010-11-04 | 2012-05-10 | 中兴通讯股份有限公司 | Method, device and terminal for identifying lcd screen |
| CN102164193A (en) * | 2011-01-21 | 2011-08-24 | 惠州Tcl移动通信有限公司 | Electronic device, manufacturing method thereof and method for identifying and driving display screen |
| CN106556752A (en) * | 2015-09-25 | 2017-04-05 | 鸿富锦精密工业(武汉)有限公司 | GPIO interface circuit for detecting |
| CN106227559A (en) * | 2016-07-14 | 2016-12-14 | 广东欧珀移动通信有限公司 | A kind of module loading method and terminal unit |
| CN107610626A (en) * | 2017-08-31 | 2018-01-19 | 深圳市国显科技有限公司 | A kind of detection method of the ID detection tools of LCM |
| CN108288447A (en) * | 2017-12-28 | 2018-07-17 | 江西合力泰科技有限公司 | A kind of test method for SPI interface |
| CN108510923A (en) * | 2018-03-30 | 2018-09-07 | 武汉精立电子技术有限公司 | A kind of detection liquid crystal module ID pins open the device of short circuit |
| CN109324242A (en) * | 2018-08-24 | 2019-02-12 | 广东南控电力有限公司 | A kind of new energy power station fault identification detection system |
| CN109324242B (en) * | 2018-08-24 | 2021-06-15 | 广东南控电力有限公司 | New forms of energy power station fault identification detecting system |
| CN110141221A (en) * | 2019-06-28 | 2019-08-20 | 联想(北京)有限公司 | A kind of monitoring device, method and system |
| CN112114764A (en) * | 2020-09-21 | 2020-12-22 | 杭州秦商鞅科技有限公司 | Computer extended display screen system |
| CN114283717A (en) * | 2021-12-02 | 2022-04-05 | 深圳同兴达科技股份有限公司 | Method for avoiding power-on and power-off burn of display module |
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