CN102279816A - LCD (liquid crystal display) automatic identification method and device - Google Patents
LCD (liquid crystal display) automatic identification method and device Download PDFInfo
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- CN102279816A CN102279816A CN2011101474069A CN201110147406A CN102279816A CN 102279816 A CN102279816 A CN 102279816A CN 2011101474069 A CN2011101474069 A CN 2011101474069A CN 201110147406 A CN201110147406 A CN 201110147406A CN 102279816 A CN102279816 A CN 102279816A
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Abstract
The invention provides an LCD (liquid crystal display) automatic identification method and device. The LCD automatic identification method comprises the following steps: acquiring LCD type information from an LCD control chip; acquiring a corresponding LCD driving program according to the LCD type information, and carrying out initialization processing on the LCD according to the LCD driving program. The LCD automatic identification device comprises a type information acquisition module and a driving module, wherein the type information acquisition module is used to acquire the LCD type information from the LCD control chip; and the driving module is used to acquire the corresponding LCD driving program according to the LCD type information and conduct the initialization processing on the LCD according to the LCD driving program. The LCD automatic identification method and device provided by the invention can avoid the problem that the LCD cannot be normally used by an unmatched driving program caused by the replacement of the LCD with different types, thus the driving effect of the LCD can be improved.
Description
Technical field
The present invention relates to the LCD Driving technique, relate in particular to a kind of LCD automatic identifying method and device.
Background technology
Existing mobile phone screen adopts LCD (Liquid Crystal Display usually, be called for short LCD), the LCD of different model is usually to due independently driver, when changing LCD, also need to change the driver of LCD, and driver recompilated, generate new software version.
In mobile phone was produced, many mobile phone projects were used a few money LCD simultaneously, were easy to cause the LCD of current software version to drive the unmatched problem with the actual LCD of use, thereby LCD can not normally show, greatly reduce work efficiency, improved cost, incured loss through delay the duration.
Summary of the invention
The invention provides a kind of LCD automatic identifying method and device,, improve the driving effect of LCD to realize identification and driving to the LCD of different model.
The invention provides a kind of LCD automatic identifying method, comprising:
Obtain the LCD type information from the LCD control chip;
Obtain corresponding LCD driver according to described LCD type information, LCD is carried out initialization process according to described LCD driver.
Aforesaid LCD automatic identifying method describedly obtains the LCD type information from the LCD control chip, comprising:
Obtain the identification magnitude of voltage from described LCD control chip, and described identification magnitude of voltage is carried out formation voltage numerical information after mould/number conversion;
If judge and know that described voltage digital signal is an effective voltage value,, be the voltage identification value then with described voltage digital information translation according to default conversion weights;
Obtain described LCD type information according to described voltage identification value.
Aforesaid LCD automatic identifying method describedly obtains described LCD type information according to described voltage identification value, comprising:
If judge and know that described voltage identification value belongs to the predeterminated voltage identification range, then discerns the voltage range that described voltage identification value belongs to;
Obtain the LCD type information of described voltage range correspondence.
Aforesaid LCD automatic identifying method describedly obtains the identification magnitude of voltage from described LCD control chip, and described identification magnitude of voltage is carried out after mould/number conversion also comprising after the formation voltage numerical information:
If judge and know that described voltage digital signal is the dead voltage value, then return from described LCD control chip and obtain the step of identification magnitude of voltage, and upgrade the first wrong indication information;
Know that the described first wrong indication information greater than the first default improper value, then generates first error reporting if judge.
Aforesaid LCD automatic identifying method, described is after the voltage identification value with described voltage digital information translation, also comprises:
If judge and know that described voltage identification value does not belong to the predeterminated voltage identification range, then return from described LCD control chip and obtain the step of identification magnitude of voltage, and upgrade the second wrong indication information;
Know that the described second wrong indication information greater than the second default improper value, then generates second error reporting if judge.
Aforesaid LCD automatic identifying method describedly obtains the identification magnitude of voltage from described LCD control chip, and described identification magnitude of voltage is carried out formation voltage numerical information after mould/number conversion, comprising:
Obtain the identification magnitude of voltage from described LCD control chip, described identification magnitude of voltage is carried out voltage division processing;
To carry out mould/number conversion through the identification magnitude of voltage after the voltage division processing, generate described voltage digital information.
The invention provides a kind of LCD automatic identification equipment, comprising:
The type information acquisition module is used for obtaining the LCD type information from the LCD control chip;
Driver module is used for obtaining corresponding LCD driver according to described LCD type information, according to described LCD driver LCD is carried out initialization process.
Aforesaid LCD automatic identification equipment, described type information acquisition module comprises:
Identification voltage acquiring unit is used for obtaining the identification magnitude of voltage from described LCD control chip, and described identification magnitude of voltage is carried out formation voltage numerical information after mould/number conversion;
The voltage identification converting unit is used for if judgement knows that described voltage digital signal is an effective voltage value, according to default conversion weights, is the voltage identification value with described voltage digital information translation then;
The model acquiring unit is used for obtaining described LCD type information according to described voltage identification value.
Aforesaid LCD automatic identification equipment, described model acquiring unit comprises:
Voltage range recognin unit is used for knowing that described voltage identification value belongs to the predeterminated voltage identification range, then discerns the voltage range that described voltage identification value belongs to if judge;
Model is obtained subelement, is used to obtain the LCD type information of described voltage range correspondence.
Aforesaid LCD automatic identification equipment, described identification voltage acquiring unit comprises:
The dividing potential drop subelement is used for obtaining the identification magnitude of voltage from described LCD control chip, and described identification magnitude of voltage is carried out voltage division processing;
The analog to digital conversion subelement is used for generating described voltage digital information with carrying out mould/number conversion through the identification magnitude of voltage after the voltage division processing.
As shown from the above technical solution, LCD automatic identifying method provided by the invention and device, by obtaining the LCD type information, obtain corresponding LCD driver according to this LCD type information again, to realize correct identification and driving to the LCD of different model, the driver of having avoided the replacing because of the LCD of different model the to cause LCD problem normally that do not match has improved the driving effect of LCD.
Description of drawings
The LCD automatic identifying method process flow diagram that Fig. 1 provides for the embodiment of the invention;
A kind of LCD automatic identification equipment structural representation that Fig. 2 provides for the embodiment of the invention;
The another kind of LCD automatic identification equipment structural representation that Fig. 3 provides for the embodiment of the invention;
Another LCD automatic identification equipment structural representation that Fig. 4 provides for the embodiment of the invention;
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention is clearer,, the technical scheme in the embodiment of the invention is clearly and completely described below in conjunction with the embodiment of the invention.Need to prove that in accompanying drawing or instructions, similar or components identical is all used identical Reference numeral.
The LCD automatic identifying method process flow diagram that Fig. 1 provides for the embodiment of the invention.As shown in Figure 1, the LCD automatic identifying method that present embodiment provides specifically can be used for automatic identification and the driving of the LCD of portable terminal, but not as limit.When portable terminal is changed LCD, the LCD automatic identification equipment adopts this LCD that LCD automatic identifying method is changed to discern and drive, the LCD automatic identification equipment is realized by the form of hardware and/or software, can be integrated in the main control chip of portable terminal, also the LCD automatic identification equipment can be set separately.
The LCD automatic identifying method of present embodiment specifically comprises:
Usually by the LCD control chip LCD is shown control, be preset with the LCD type information by manufacturer in the LCD control chip, specifically can obtain this LCD type information by the corresponding pin of LCD control chip.Also can be by obtaining the magnitude of voltage on this pin, to obtain this LCD type information.The mode of obtaining the LCD type information is not exceeded with present embodiment.
The LCD type information is specially the information in order to sign LCD model, the LCD type information difference of the LCD correspondence of different model.Can set in advance the LCD driver of the LCD correspondence of various models, the LCD driver and the LCD type information of each model LCD correspondence have certain mapping relations, obtain corresponding LCD driver according to the LCD type information, according to this LCD driver LCD is carried out initialization process again, normally show to drive LCD.
The LCD automatic identifying method that present embodiment provides, by obtaining the LCD type information, obtain corresponding LCD driver according to this LCD type information again, to realize correct identification and driving to the LCD of different model, the driver of having avoided the replacing because of the LCD of different model the to cause LCD problem normally that do not match has improved the driving effect of LCD.
In the present embodiment, step 10, obtain the LCD type information, specifically can comprise the steps: from the LCD control chip
Step 101, obtain the identification magnitude of voltage, and the identification magnitude of voltage is carried out formation voltage numerical information after mould/number conversion from the LCD control chip;
Concrete, the identification magnitude of voltage is the magnitude of voltage on the LCD type information output pin of LCD control chip, is simulating signal.The identification magnitude of voltage is carried out formation voltage numerical information after mould/number conversion, specifically can realize by A/D converter, usually be provided with a plurality of A/D converters in the mobile terminal device to realize the conversion of simulating signal to digital signal, can shared this A/D converter, do not increase device.Magnitude of voltage difference on the LCD type information output pin of the LCD control chip of the LCD correspondence of different model, promptly identification magnitude of voltage difference can be discerned the model of LCD according to this identification magnitude of voltage.
Step 102, if judge and to know that voltage digital signal is an effective voltage value,, be the voltage identification value then with the voltage digital information translation according to default conversion weights;
Because voltage digital signal is the digital quantity of identification magnitude of voltage, is non-zero amount.If voltage digital signal is zero, then this voltage digital signal is the dead voltage value, and expression identification magnitude of voltage does not obtain success.If this voltage digital signal is an effective voltage value,, be the voltage identification value then with the voltage digital information translation according to default conversion weights.Voltage digital information is digital signal, usually with binary representation, and according to the identification range of A/D converter, the corresponding well-determined magnitude of voltage of this voltage digital information.If the identification magnitude of voltage is not amplified or voltage division processing before, then default conversion weights are 1, if before the identification magnitude of voltage is amplified or voltage division processing, then set and defaultly to change weights, so that the voltage identification value is corresponding with the identification magnitude of voltage according to the pre-service situation of reality.
Step 103, obtain the LCD type information according to the voltage identification value.
In the present embodiment, step 103, obtain the LCD type information, specifically can comprise the steps: according to the voltage identification value
Step 1031, know that the voltage identification value belongs to the predeterminated voltage identification range, then discerns the voltage range that the voltage identification value belongs to if judge;
Concrete, can set in advance the predeterminated voltage identification range according to the identification magnitude of voltage of the LCD correspondence of needed each model, dividing in this predeterminated voltage identification range has a plurality of voltage ranges, with the different identification magnitude of voltage of correspondence.Because voltage identification value reflection identification magnitude of voltage if the voltage identification value belongs to the predeterminated voltage identification range, is then discerned the voltage range that the voltage identification value belongs to.
Step 1032, obtain the LCD type information of voltage range correspondence.
In the present embodiment, step 101, obtain the identification magnitude of voltage, and the identification magnitude of voltage carried out after mould/number conversion also comprising after the formation voltage numerical information from the LCD control chip:
Step 104, if judge and to know that voltage digital signal is the dead voltage value, then return the step of obtaining the identification magnitude of voltage from the LCD control chip, and upgrade the first wrong indication information;
Step 105, know that the first wrong indication information greater than the first default improper value, then generates first error reporting if judge.
It should be noted that step 104 and step 102 do not have inevitable sequential relationship.In the step 101 the identification magnitude of voltage carried out after mould/number conversion after the formation voltage numerical information, voltage digital signal is judged, if voltage digital signal is an effective voltage value,, be the voltage identification value then with the voltage digital information translation according to default conversion weights.If voltage digital signal is the dead voltage value, then return step 101, obtain the identification magnitude of voltage from the LCD control chip again, and the identification magnitude of voltage is carried out formation voltage numerical information after mould/number conversion, and upgrade the first wrong indication information.The initial value of the first wrong indication information can be 0, and when voltage digital signal was the dead voltage value, the first wrong indication information added 1.When the first wrong indication information is preset improper value greater than first, generate first error reporting.The first default improper value can be according to the fault-tolerant needs setting of reality, and specifically being used to of first error reporting indicates the identification magnitude of voltage not read success.
In the present embodiment, be after the voltage identification value with the voltage digital information translation, specifically can also comprise the steps:
Step 106, if judge and to know that the voltage identification value does not belong to the predeterminated voltage identification range, then return the step of obtaining the identification magnitude of voltage from the LCD control chip, and upgrade the second wrong indication information;
Step 107, know that the second wrong indication information greater than the second default improper value, then generates second error reporting if judge.
When noticeable, step 106 and step 1031 do not have inevitable sequential relationship.With the voltage digital information translation is after the voltage identification value, and the voltage identification value is judged.If the voltage identification value belongs to the predeterminated voltage identification range, the voltage range that then other voltage identification value belongs to obtains the LCD type information of voltage range correspondence.If the voltage identification value does not belong to the predeterminated voltage identification range, then return step 101, obtain the identification magnitude of voltage from the LCD control chip again, and upgrade the second wrong indication information.The second wrong indication information initial value also can be 0, and when the voltage identification value did not belong to the predeterminated voltage identification range, the second wrong indication information added 1.When the second wrong indication information is preset improper value greater than second, generate second error reporting.The second default improper value can be according to the fault-tolerant needs setting of reality, second error reporting specifically be used to indicate identification magnitude of voltage read error, the LCD driver that does not perhaps have this model LCD correspondence can carry out the interpolation of LCD driver according to this second error reporting.
In the present embodiment, step 101, obtain the identification magnitude of voltage, and the identification magnitude of voltage is carried out formation voltage numerical information after mould/number conversion, specifically can comprise the steps: from the LCD control chip
Step 1011, obtain the identification magnitude of voltage, the identification magnitude of voltage is carried out voltage division processing from the LCD control chip;
Step 1012, will carry out mould/number conversion through the identification magnitude of voltage after the voltage division processing, formation voltage numerical information.
Concrete, can carry out voltage division processing to the identification magnitude of voltage according to the conversion range of the A/D converter of selecting, so that the identification magnitude of voltage after handling has been avoided the distortion of mould/number conversion within conversion range, improved the accuracy of data.
A kind of LCD automatic identification equipment structural representation that Fig. 2 provides for the embodiment of the invention.As shown in Figure 2, the LCD automatic identification equipment that present embodiment provides can be realized the LCD automatic identifying method that any embodiment of the present invention provides, but not as limit, this LCD automatic identification equipment comprises type information acquisition module 11 and driver module 12.Type information acquisition module 11 is used for obtaining the LCD type information from the LCD control chip.Driver module 12 is used for obtaining corresponding LCD driver according to the LCD type information, according to the LCD driver LCD is carried out initialization process.The LCD automatic identification equipment that present embodiment provides can be integrated in the main control chip of portable terminal, and I/O interface that can be by the main control chip obtains this LCD type information from the corresponding pin of LCD control chip.Also can be by obtaining the magnitude of voltage on this pin, to obtain this LCD type information.
The LCD automatic identification equipment that present embodiment provides, obtain the LCD type information by the setting of type information acquisition module, obtain corresponding LCD driver by being provided with of driver module again according to this LCD type information, to realize correct identification and driving to the LCD of different model, the driver of having avoided the replacing because of the LCD of different model the to cause LCD problem normally that do not match has improved the driving effect of LCD.
The another kind of LCD automatic identification equipment structural representation that Fig. 3 provides for the embodiment of the invention.As shown in Figure 3, in the present embodiment, type information acquisition module 11 specifically can comprise identification voltage acquiring unit 111, voltage identification converting unit 112 and model acquiring unit 113, identification voltage acquiring unit 111 is used for obtaining the identification magnitude of voltage from the LCD control chip, and the identification magnitude of voltage is carried out formation voltage numerical information after mould/number conversion.Voltage identification converting unit 112 is used for if judgement knows that voltage digital signal is an effective voltage value, according to default conversion weights, is the voltage identification value with the voltage digital information translation then.Model acquiring unit 113 is used for obtaining the LCD type information according to the voltage identification value.
In the present embodiment, model acquiring unit 113 can comprise that specifically voltage range recognin unit 1131 and model obtain subelement 1132.Voltage range recognin unit 1131 is used for knowing that the voltage identification value belongs to the predeterminated voltage identification range, then discerns the voltage range that the voltage identification value belongs to if judge.Model is obtained the LCD type information that subelement 1132 is used to obtain the voltage range correspondence.
In the present embodiment, identification voltage acquiring unit 111 specifically can comprise dividing potential drop subelement 1111 and analog to digital conversion subelement 1112.Dividing potential drop subelement 1111 is used for obtaining the identification magnitude of voltage from the LCD control chip, and the identification magnitude of voltage is carried out voltage division processing.Analog to digital conversion subelement 1112 is used for and will carries out mould/number conversion, formation voltage numerical information through the identification magnitude of voltage after the voltage division processing.
In actual application, can realize the function of dividing potential drop subelement by divider resistance, as shown in Figure 4, be connected across after the series connection of divider resistance R1 and R2 on the LCD control chip LCD type information output pin, to realize voltage division processing the identification magnitude of voltage.Analog to digital conversion subelement 1112 carries out mould/number conversion with the identification magnitude of voltage after the voltage division processing and handles back formation voltage numerical information.Voltage identification converting unit 112 can be passed through I
2The C bus is obtained this voltage digital information, to handle accordingly.When voltage identification converting unit 112 is integrated in the main control chip internal, need not the I/O interface is set in addition, avoided the waste of chip interface resource.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that previous embodiment is put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a LCD automatic identifying method is characterized in that, comprising:
Obtain the LCD type information from the LCD control chip;
Obtain corresponding LCD driver according to described LCD type information, LCD is carried out initialization process according to described LCD driver.
2. LCD automatic identifying method according to claim 1 is characterized in that, describedly obtains the LCD type information from the LCD control chip, comprising:
Obtain the identification magnitude of voltage from described LCD control chip, and described identification magnitude of voltage is carried out formation voltage numerical information after mould/number conversion;
If judge and know that described voltage digital signal is an effective voltage value,, be the voltage identification value then with described voltage digital information translation according to default conversion weights;
Obtain described LCD type information according to described voltage identification value.
3. LCD automatic identifying method according to claim 2 is characterized in that, describedly obtains described LCD type information according to described voltage identification value, comprising:
If judge and know that described voltage identification value belongs to the predeterminated voltage identification range, then discerns the voltage range that described voltage identification value belongs to;
Obtain the LCD type information of described voltage range correspondence.
4. LCD automatic identifying method according to claim 2 is characterized in that, describedly obtains the identification magnitude of voltage from described LCD control chip, and described identification magnitude of voltage is carried out after mould/number conversion also comprising after the formation voltage numerical information:
If judge and know that described voltage digital signal is the dead voltage value, then return from described LCD control chip and obtain the step of identification magnitude of voltage, and upgrade the first wrong indication information;
Know that the described first wrong indication information greater than the first default improper value, then generates first error reporting if judge.
5. LCD automatic identifying method according to claim 3 is characterized in that, described is after the voltage identification value with described voltage digital information translation, also comprises:
If judge and know that described voltage identification value does not belong to the predeterminated voltage identification range, then return from described LCD control chip and obtain the step of identification magnitude of voltage, and upgrade the second wrong indication information;
Know that the described second wrong indication information greater than the second default improper value, then generates second error reporting if judge.
6. LCD automatic identifying method according to claim 2 is characterized in that, describedly obtains the identification magnitude of voltage from described LCD control chip, and described identification magnitude of voltage is carried out formation voltage numerical information after mould/number conversion, comprising:
Obtain the identification magnitude of voltage from described LCD control chip, described identification magnitude of voltage is carried out voltage division processing;
To carry out mould/number conversion through the identification magnitude of voltage after the voltage division processing, generate described voltage digital information.
7. a LCD automatic identification equipment is characterized in that, comprising:
The type information acquisition module is used for obtaining the LCD type information from the LCD control chip;
Driver module is used for obtaining corresponding LCD driver according to described LCD type information, according to described LCD driver LCD is carried out initialization process.
8. LCD automatic identification equipment according to claim 7 is characterized in that, described type information acquisition module comprises:
Identification voltage acquiring unit is used for obtaining the identification magnitude of voltage from described LCD control chip, and described identification magnitude of voltage is carried out formation voltage numerical information after mould/number conversion;
The voltage identification converting unit is used for if judgement knows that described voltage digital signal is an effective voltage value, according to default conversion weights, is the voltage identification value with described voltage digital information translation then;
The model acquiring unit is used for obtaining described LCD type information according to described voltage identification value.
9. LCD automatic identification equipment according to claim 8 is characterized in that, described model acquiring unit comprises:
Voltage range recognin unit is used for knowing that described voltage identification value belongs to the predeterminated voltage identification range, then discerns the voltage range that described voltage identification value belongs to if judge;
Model is obtained subelement, is used to obtain the LCD type information of described voltage range correspondence.
10. LCD automatic identification equipment according to claim 8 is characterized in that, described identification voltage acquiring unit comprises:
The dividing potential drop subelement is used for obtaining the identification magnitude of voltage from described LCD control chip, and described identification magnitude of voltage is carried out voltage division processing;
The analog to digital conversion subelement is used for generating described voltage digital information with carrying out mould/number conversion through the identification magnitude of voltage after the voltage division processing.
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| CN103309656A (en) * | 2013-05-14 | 2013-09-18 | 李君凡 | Method for automatically matching drivers with LCD parameters by virtue of software |
| CN103618948A (en) * | 2013-12-10 | 2014-03-05 | 珠海迈科电子科技有限公司 | Method and system for automatically identifying HDMI (High Definition Multimedia Interface) chip of set top box |
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| CN110187894A (en) * | 2019-05-22 | 2019-08-30 | 青岛海信宽带多媒体技术有限公司 | A kind of initial method of optical module, device and electronic equipment |
| CN112068885A (en) * | 2019-06-10 | 2020-12-11 | 广东美的制冷设备有限公司 | Screen self-adaptive driving method and device |
| CN112037726A (en) * | 2020-09-09 | 2020-12-04 | 珠海格力电器股份有限公司 | Display screen drive control method, device and system and household appliance |
| CN113849237A (en) * | 2021-09-26 | 2021-12-28 | 高创(苏州)电子有限公司 | Driving method and device of touch module and display equipment |
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