CN103956129A - Automatic identification system for electronic product display screen - Google Patents
Automatic identification system for electronic product display screen Download PDFInfo
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- CN103956129A CN103956129A CN201410167053.2A CN201410167053A CN103956129A CN 103956129 A CN103956129 A CN 103956129A CN 201410167053 A CN201410167053 A CN 201410167053A CN 103956129 A CN103956129 A CN 103956129A
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Abstract
The invention discloses an automatic identification system for an electronic product display screen. The automatic identification system for the electronic product display screen comprises a display screen and a mainboard, the display screen is provided with an identification voltage generating circuit unit, the mainboard is provided with a voltage measuring device, the voltage measuring device measures voltages on the identification voltage generating circuit unit and matches the voltages with voltage values, corresponding to multiple display screens, preset in an electronic product, and therefore the display screen connected with the mainboard is identified. Compared with the existing identification mode, the mode of the automatic identification system for the electronic product display screen is more convenient and simpler to achieve, the automatic identification system for the electronic product display screen is independent of the control chips of the display screen, and compatibility is good.
Description
[technical field]
The present invention relates to the circuit structure of electronic product, refer to especially the automatic recognition system of electronic product display screen.
[background technology]
At electronic product, particularly in the performance history of portable type electronic product, conventionally may be on a platform adaptive a or many moneys display screen, select display screen corresponding to appointment if needed in the exploitation of each product by compiling, not only compiling trouble, and easily make mistakes.
For above problem, the current conventional method of industry is the essential informations such as the ID of all applicable display screens of increase in system (as the system software of electronic product), then in use, shield the information such as the ID of control chip inside by reading displayed, come to compare with the id information of internal system, thereby select the display screen of actual use.This recognition methods accuracy is higher, but versatility is poor, the register difference of different display screen identification ids, and read-write order also may be different.As screen compatible more under this background, need a large amount of code and execution time, thereby increase the operational efficiency that expends and reduced product of resource.This patent will be avoided adopting and read this recognition method of ID, then the identification way of employing and hardware collocation is identified display screen.
[summary of the invention]
The object of the present invention is to provide a kind of automatic recognition system of electronic product display screen, a large amount of code and the execution time of needs existing in order to solve existing recognition methods, the problem that expends and reduced the operational efficiency of product of increase resource.
For achieving the above object, the automatic recognition system of implementing electronic product display screen of the present invention comprises display screen and mainboard, wherein display screen is provided with identification voltage generation unit, and mainboard is provided with a voltage measurement unit, this voltage measuring apparatus is measured the voltage producing on identification voltage generation unit, and mating with the magnitude of voltage corresponding with multiple display screens default in this electronic product, thereby the display screen that identification is connected with this mainboard.
According to above-mentioned principal character, magnitude of voltage corresponding to above-mentioned and multiple display screens is to be stored in the system software of this electronic product.
According to above-mentioned principal character, magnitude of voltage corresponding to above-mentioned and multiple display screens is to be stored in the nonvolatile memory of this electronic product.
According to above-mentioned principal character, this voltage measuring apparatus is an ADC module.
According to above-mentioned principal character, this interpolation identification voltage generation unit is an identification resistance circuit.
Compared with prior art, the present invention adopts and on display screen, is provided with identification voltage generation unit, logical
Voltage on over-voltage measurement measurement device identification voltage generation unit, and with this electronic product in pre-
If the magnitude of voltage corresponding with multiple display screens mate, thereby identification be connected with this mainboard show
Show screen, compared with existing recognition method, implementation of the present invention is more convenient and simple, and
Irrelevant with the control chip of display screen, better compatible.
[brief description of the drawings]
Fig. 1 is the composition frame diagram of implementing the automatic recognition system of electronic product display screen of the present invention.
Fig. 2 is the circuit diagram of implementing the automatic recognition system of electronic product display screen of the present invention.
[embodiment]
Refer to shown in Fig. 1, for implementing the composition frame diagram of automatic recognition system of electronic product display screen of the present invention.The automatic recognition system of electronic product display screen comprises display screen and mainboard, wherein display screen is provided with identification resistance circuit as identification voltage generation unit, and mainboard is provided with an ADC module as voltage measuring apparatus, this voltage measuring apparatus is measured the voltage on identification voltage generation unit, and mating with the magnitude of voltage corresponding with multiple display screens default in this electronic product, thereby the display screen that identification is connected with this mainboard.
In the specific implementation, the magnitude of voltage that above-mentioned and multiple display screens are corresponding is to be stored in the system software of this electronic product or in the nonvolatile memory of this electronic product.
In the specific implementation, as can drawing a design the stage at display screen (as display screen), increase identification voltage generation circuit (being the first and second resistance in Fig. 2), these two resistance are using the key hardware of the identification voltage generation unit in display screen is identified automatically, then pass through voltage measuring apparatus, as the ADC unit in this reference reads the magnitude of voltage of this identification resistance, decide display screen model according to the magnitude of voltage getting.
In the embodiment shown in Figure 2, this identification voltage generation unit is an identification resistance circuit, comprise two first and second two identification resistance that are connected in series that are serially connected with between reference voltage and ground, the setting of certainly concrete resistance quantity and size can be complied with concrete requirement.
And for the display screen of different styles, the display screen that identical style is set adopts identical identification resistance in the stage of drawing a design, in circuit design process, to identify resistance access circuit (as shown in Figure 2), after display screen is powered on, under a typical reference voltage level, these two identification resistance will produce a corresponding identification voltage, then read this magnitude of voltage.In the time having many moneys display screen, can adopt different identification resistance in the stage of drawing a design, thereby obtain different identification magnitudes of voltage, as long as read this voltage, just can judge according to this magnitude of voltage the model of display screen.Voltage reading unit can be realized by ADC module, and ADC module is very common at present, and all integrated ADC module in a lot of Power Management Unit, provides one or several ADC interface in addition.If there is this function in the Power Management Unit of system, just can directly use the ADC interface of Power Management Unit.
In the time of specific works, after display screen completed powering on, the magnitude of voltage of the system reading displayed screen identification corresponding A DC of resistance institute port, the magnitude of voltage (being provided with the magnitude of voltage corresponding with multiple display screens) that then should have with display screen according to the magnitude of voltage of reading compares, if coupling, just prove this display screen, the related driver programs of this display screen has been called to the work such as follow-up test.
In the time of specific implementation, the magnitude of voltage corresponding with multiple display screens is arranged in system file and realized than being easier to, these magnitudes of voltage in this document, can be preserved in the mode of array (an approximate table), also can directly write in judgement.The mode example as follows of concrete judgement:
if(trueV<1100)//(1V)
ID=display screen-A;
else?if(trueV<2100)//(2V)
ID=display screen-B;
else
ID=display screen-C.
Be that supposing the system can be supported display screen-A, display screen-B and tri-screens of display screen-C at present.Suppose that the trueV (actual voltage value) reading is 1V, be judged to be display screen-A, as be 2V, be judged to be display screen B.As be that trueV (actual voltage value) is 3V, display screen-A and display screen-B can be not selected so, system must have again a display screen, so just can only use the display screen-C of acquiescence, at this moment after, just register display screen-C and drive.Even if that use actual is not display screen-C, and also first fill with display screen-C here, guarantees that the system compiling out necessarily can support a display screen, and does not go to be concerned about whether this display screen is correct at present.Only have after correct display screen is added into, just can automatically identify and choose corresponding display screen.If reference voltage is 2V, the resistance of the first and second resistance equates, supposes that it is all 1K, can obtain the identification voltage of 1.0V at measurement point.If first resistance is 1.5K, second is 0.5K, can obtain the identification voltage of 0.5V at measurement point.If first resistance is 0.5K, second is 1.5K, can obtain the identification voltage of 1.5V at measurement point.
In addition, between the digital voltage value of reading because of general ADC function and actual analog voltage, have an error, this mistake extent depends primarily on the hardware design of ADC functional module, so in above-mentioned example, can whether equal 1V according to the voltage of reading and make a decision.For example, error is positive and negative 0.05V, correct as long as the magnitude of voltage of reading so, between 950 and 1050, can be thought, is 1V.So the mistake causing for fear of the error here, above-mentioned example has used and has been less than certain value, as at above-mentioned example, supposes that certain magnitude of voltage of once reading is 997, because 997<1100 sets up, so just can be judged as display screen-A.Read next time magnitude of voltage be 1035, because 1035<1100 still sets up, so still can be judged as display screen-A.No matter magnitude of voltage is 997 or 1035, all within the scope of the permissible error of ADC module, all near 1V, thus be all correct, so can ensure that they can be by correct identifying.Specific to above-mentioned program, if the permissible error of ADC were ± 50, suppose that so reading XXX is in this is interval (950<XXX<1050), because ((950<XXX<1050) <1100) condition meets, we just think that this magnitude of voltage XXX is exactly 1V so.So selected like this display screen-A.After display screen-A chooses, if judgement circulation has just been exited, and just can not choose display screen-B or display screen-C.If certain read voltage be on (1950<XXX<2050) this interval, this judgement of shielding so A just can not meet, will enter the judgement of display screen-B, because meet ((1950<XXX<2050) <2100) this condition of display screen-B, so display screen-B will be selected, after display screen-B chooses, just naturally no longer judge display screen-C.
Compared with prior art, the present invention adopts and on display screen, is provided with identification voltage generation unit, measure the voltage on identification voltage generation unit by voltage measuring apparatus, and mate with the magnitude of voltage corresponding with multiple display screens default in this electronic product, thereby the display screen that identification is connected with this mainboard, compared with existing recognition method, implementation of the present invention is more convenient and simple, and irrelevant with the control chip of display screen, better compatible.
Be understandable that, for those of ordinary skills, can be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, and all these changes or replacement all should belong to the protection domain of the appended claim of the present invention.
Claims (5)
1. the automatic recognition system of an electronic product display screen, comprise display screen and mainboard, wherein display screen is provided with identification voltage generation unit, and mainboard is provided with a voltage measuring apparatus, this voltage measuring apparatus is measured the voltage that identification voltage generation unit produces, and mating with the magnitude of voltage corresponding with multiple display screens default in this electronic product, thereby the display screen that identification is connected with this mainboard.
2. the automatic recognition system of electronic product display screen as claimed in claim 1, is characterized in that: magnitude of voltage corresponding to above-mentioned and multiple display screens is to be stored in the system software of this electronic product.
3. the automatic recognition system of electronic product display screen as claimed in claim 1, is characterized in that: magnitude of voltage corresponding to above-mentioned and multiple display screens is to be stored in the nonvolatile memory of this electronic product.
4. the automatic recognition system of electronic product display screen as claimed in claim 1, is characterized in that: this voltage measuring apparatus is an ADC module.
5. the automatic recognition system of electronic product display screen as claimed in claim 1, is characterized in that: this interpolation identification voltage generation unit is an identification resistance circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410167053.2A CN103956129A (en) | 2014-04-24 | 2014-04-24 | Automatic identification system for electronic product display screen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410167053.2A CN103956129A (en) | 2014-04-24 | 2014-04-24 | Automatic identification system for electronic product display screen |
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| CN103956129A true CN103956129A (en) | 2014-07-30 |
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| CN201410167053.2A Pending CN103956129A (en) | 2014-04-24 | 2014-04-24 | Automatic identification system for electronic product display screen |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019061193A1 (en) * | 2017-09-28 | 2019-04-04 | 深圳传音通讯有限公司 | Display screen compatibility method, mobile terminal, and readable storage medium |
| WO2019109893A1 (en) * | 2017-12-04 | 2019-06-13 | 苏州欧普照明有限公司 | Product category recognition system and lighting fixtures |
| CN112652274A (en) * | 2020-12-24 | 2021-04-13 | 联想(北京)有限公司 | Backlight control method and device |
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| CN1695109A (en) * | 2002-09-17 | 2005-11-09 | 伊罗接触系统公司 | Dynamic corrections for a non-linear touch screen |
| CN201282516Y (en) * | 2008-11-05 | 2009-07-29 | 青岛海信电器股份有限公司 | Television set |
| CN101876864A (en) * | 2009-12-15 | 2010-11-03 | 北京中星微电子有限公司 | Data acquisition device and method of touch screen as well as touch screen system |
| CN102685283A (en) * | 2012-05-10 | 2012-09-19 | 华为终端有限公司 | Device module identification method and device and mobile terminal |
| CN203352630U (en) * | 2013-06-20 | 2013-12-18 | 上海天奕达电子科技有限公司 | A compatible system of a display screen device |
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2014
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1695109A (en) * | 2002-09-17 | 2005-11-09 | 伊罗接触系统公司 | Dynamic corrections for a non-linear touch screen |
| CN201282516Y (en) * | 2008-11-05 | 2009-07-29 | 青岛海信电器股份有限公司 | Television set |
| CN101876864A (en) * | 2009-12-15 | 2010-11-03 | 北京中星微电子有限公司 | Data acquisition device and method of touch screen as well as touch screen system |
| CN102685283A (en) * | 2012-05-10 | 2012-09-19 | 华为终端有限公司 | Device module identification method and device and mobile terminal |
| CN203352630U (en) * | 2013-06-20 | 2013-12-18 | 上海天奕达电子科技有限公司 | A compatible system of a display screen device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019061193A1 (en) * | 2017-09-28 | 2019-04-04 | 深圳传音通讯有限公司 | Display screen compatibility method, mobile terminal, and readable storage medium |
| WO2019109893A1 (en) * | 2017-12-04 | 2019-06-13 | 苏州欧普照明有限公司 | Product category recognition system and lighting fixtures |
| CN112652274A (en) * | 2020-12-24 | 2021-04-13 | 联想(北京)有限公司 | Backlight control method and device |
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