CN104867440A - VFD brightness control method and device - Google Patents
VFD brightness control method and device Download PDFInfo
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- CN104867440A CN104867440A CN201510288219.0A CN201510288219A CN104867440A CN 104867440 A CN104867440 A CN 104867440A CN 201510288219 A CN201510288219 A CN 201510288219A CN 104867440 A CN104867440 A CN 104867440A
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Abstract
The invention discloses a VFD brightness control method. The method comprises that the practical brightness of a VFD is detected, and data of the practical brightness of the VFD is obtained; the practical brightness data of the VFD is compared with preset standard brightness data; and the driving intensity of the VFD is adjusted according to a comparison result, so that the adjusted practical brightness data of the VFD is consistent with the preset standard brightness data. According to the method and device, the problem that the brightness of VFD products is inconsistent is solved, and the consistency of the brightness of the VFD products is improved.
Description
Technical field
The present invention relates to electronic applications, particularly relates to a kind of control method and device of VFD brightness.
Background technology
Vacuum fluorescent display screen (Vacuum Fluorescent Display, VFD) is a kind of self luminous flat-panel display device, is now widely used in industry, business, particularly household electrical appliance digital product field.The structure of VFD and glass lid and substrate form a vacuum tank, in vacuum tank with negative electrode (filament), grid and anode for primary electrode, also have some other part (getter etc.).VFD is a kind of three-electrode vacuum tube of special variant, and its electronics emits from negative pole (filament), the fluorescent powder of impinge anode surface attachment after being accelerated by aperture plate thus luminous.
The luminosity of VFD depends primarily on the performance of fluorescent powder.In different VFD products, the performance of the fluorescent powder of employing always also exists difference, and therefore, in the product of different VFD, the luminosity of VFD often exists inconsistency situation, affects the display effect of VFD product.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of control method and device of VFD brightness, to solve the inconsistent problem of VFD product luminosity, improves the consistance of VFD product luminosity.
First aspect, embodiments provides the control method of a kind of vacuum fluorescent display screen VFD brightness, comprising:
Detect the intrinsic brilliance of VFD, obtain the intrinsic brilliance data of described VFD;
The intrinsic brilliance data of described VFD and the normal brightness data preset are contrasted;
The driving intensity of result to described VFD according to contrast adjusts, to make the intrinsic brilliance data of the described VFD after adjustment and the normal brightness data consistent preset.
Second aspect, the embodiment of the present invention additionally provides a kind of device of VFD brilliance control, comprising:
Brightness data acquiring unit, for detecting the intrinsic brilliance of VFD, obtains the intrinsic brilliance data of described VFD;
Contrast unit, for contrasting the intrinsic brilliance data of described VFD and the normal brightness data preset;
Drive intensity adjustment unit, for adjusting according to the driving intensity of result to described VFD of contrast, to make the intrinsic brilliance data of the described VFD after adjustment and the normal brightness data consistent preset.
The control method of a kind of VFD brightness that the embodiment of the present invention provides and device, the method can detect the intrinsic brilliance of VFD, obtains the intrinsic brilliance data of described VFD; The intrinsic brilliance data of described VFD and the normal brightness data preset are contrasted; The driving intensity of result to described VFD according to contrast adjusts, to make the intrinsic brilliance data of the described VFD after adjustment and the normal brightness data consistent preset.The embodiment of the present invention can solve the inconsistent problem of VFD product luminosity, improves the consistance of VFD product luminosity.
Accompanying drawing explanation
By reading the detailed description done non-limiting example done with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
The control method process flow diagram of a kind of VFD brightness that Fig. 1 provides for the embodiment of the present invention one;
The control method process flow diagram of a kind of VFD brightness that Fig. 2 provides for the embodiment of the present invention two;
The control method process flow diagram of a kind of VFD brightness that Fig. 3 provides for the embodiment of the present invention three;
The control device structured flowchart of a kind of VFD brightness that Fig. 4 provides for the embodiment of the present invention four.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.Be understandable that, specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.It also should be noted that, for convenience of description, illustrate only part related to the present invention in accompanying drawing but not full content.
Embodiment one
The control method process flow diagram of a kind of VFD brightness that Fig. 1 provides for the embodiment of the present invention one; The method can be performed by the control device of VFD brightness, and device wherein can be realized by software and/hardware, and this device is located in VFD product, and as shown in Figure 1, the method comprises:
Step 101: the intrinsic brilliance detecting VFD, obtains the intrinsic brilliance data of described VFD.
In the present embodiment, the intrinsic brilliance data of VFD can be detected by the light activated element in VFD product or other checkout equipments.
Step 102: the intrinsic brilliance data of described VFD and the normal brightness data preset are contrasted.
In the present embodiment, the brightness data of standard is the scope of preset value or default value, and described default span has default higher limit and lower limit.
Step 103: the driving intensity of result to described VFD according to contrast adjusts, to make the intrinsic brilliance data of the described VFD after adjustment and the normal brightness data consistent preset.
In the present embodiment, the intrinsic brilliance data of VFD and the normal brightness data preset are contrasted, judges whether the intrinsic brilliance data of VFD meet default normal brightness data, if met, then do not need to adjust the driving intensity of described VFD; Otherwise, need to adjust the driving intensity of described VFD, make the intrinsic brilliance data of the described VFD after adjustment and the normal brightness data consistent preset.
Illustrate, the normal brightness data of the VFD pre-set are 400cd/m
2, the intrinsic brilliance data of the VFD of acquisition are 350cd/m
2, by normal brightness data 400cd/m
2with the intrinsic brilliance data 350cd/m obtained
2contrast, obtain comparing result: the intrinsic brilliance data of the VFD of acquisition are not inconsistent with the normal brightness data preset.According to comparing result, the driving intensity of VFD is adjusted (increase and drive intensity).
On the basis of above-described embodiment, when the brightness data of described standard is the scope of default value, the scope presetting value is also chosen as has a central value and plus-minus tolerance, as 400 ± 5cd/m
2.
On the basis of above-described embodiment, telepilot input, input through keyboard, bar code scanning input or other modes can be adopted to the mode that the driving intensity of described VFD adjusts.
The control method of a kind of VFD brightness that the embodiment of the present invention one provides, the method can detect the intrinsic brilliance of VFD, obtains the intrinsic brilliance data of described VFD; The intrinsic brilliance data of described VFD and the normal brightness data preset are contrasted; The driving intensity of result to described VFD according to contrast adjusts, to make the intrinsic brilliance data of the described VFD after adjustment and the normal brightness data consistent preset.The embodiment of the present invention can solve the inconsistent problem of VFD product luminosity, improves the consistance of VFD product luminosity.
Embodiment two
The process flow diagram of the control method of a kind of VFD brightness that Fig. 2 provides for the embodiment of the present invention two; The step that the embodiment of the present invention adds on the basis of embodiment one " if the brightness of the VFD after adjustment is compared with the normal brightness data preset, there is error, then return the intrinsic brilliance detecting VFD, obtain the operation of the intrinsic brilliance data of described VFD ".
Accordingly, as shown in Figure 2, described method comprises:
Step 201: the intrinsic brilliance detecting VFD, obtains the intrinsic brilliance data of described VFD.
The intrinsic brilliance data of described VFD and the normal brightness data preset contrast by step 202.
In the present embodiment, the normal brightness data preset are preset value or default span.
Step 203: the driving intensity of result to described VFD according to contrast adjusts, to make the intrinsic brilliance data of the described VFD after adjustment and the normal brightness data consistent preset.
Step 204: judge whether the brightness data of the VFD after adjusting exists error compared with the normal brightness data preset; If there is error, then perform step 201, otherwise, perform step 205: drive intensity adjustment to terminate.
In the present embodiment, carrying out in adjustment process to the driving intensity of described VFD, due to the limitation of each element function in VFD product, so need the brightness data of the VFD after repeatedly obtaining adjustment, if the brightness data of the VFD after the adjustment obtained each time is different, error is there is between brightness data after causing VFD to adjust and default normal brightness data, then return step 201, if there is not error between the brightness data after VFD adjustment and default normal brightness data, then perform step 205: drive intensity adjustment to terminate.
Illustrate, the normal brightness data preset are 400cd/m
2if the brightness data number of times obtaining the rear VFD of adjustment is three times, and brightness data is respectively 400cd/m
2, 395cd/m
2and 402cd/m
2the brightness data of the VFD then after each adjustment obtained is different, causes there is error between the brightness data after adjusting and default normal brightness data, needs to return step 201, drive intensity repeatedly to adjust to VFD, the accuracy of VFD brightness can be guaranteed.
On the basis of above-described embodiment, in order to ensure the accuracy of VFD brightness, intensity can be driven repeatedly to adjust to VFD.Wherein, can arrange for driving the number of times of intensity adjustment, as, the adjustment number of times of intensity is driven by VFD to be set to three times, after first time carries out driving the adjustment of intensity to terminate to VFD, auto-returned detects the intrinsic brilliance of VFD, obtains the operation of the intrinsic brilliance data of described VFD, until third time drives the adjustment of intensity to terminate to VFD.
The embodiment of the present invention two is on the basis of embodiment one, if add the brightness of the VFD after adjustment compared with the normal brightness data preset, there is error, then return the step of the intrinsic brilliance data manipulation detecting VFD, the present embodiment can solve the inconsistent problem of VFD product luminosity, improves the consistance of VFD product luminosity.
Embodiment three
The process flow diagram of the control method of a kind of VFD brightness that Fig. 3 provides for the present embodiment three; On the basis of above-described embodiment, be optimized, as shown in Figure 3, described method comprises:
Step 301: the intrinsic brilliance detecting VFD, obtains the intrinsic brilliance data of described VFD.
Step 302: the intrinsic brilliance data of described VFD and the normal brightness data preset are contrasted.
In the present embodiment, described default normal brightness data are preset value.
Step 303: if the intrinsic brilliance data of described VFD are greater than preset value, strengthen the driving intensity of described VFD; If the intrinsic brilliance data of described VFD are less than preset value, reduce the driving intensity of described VFD.
In the present embodiment, enhancing or reduction VFD drive intensity to realize in the following manner: adjust the anode of described VFD or the dutycycle of grid high level; Adjust the anode of described VFD or the level value of grid high level; Adjust the anode of described VFD or the difference between grid high level and negative electrode level; Adjust the driving voltage at the negative electrode two ends of described VFD.
In the present embodiment, strengthen the driving intensity of described VFD, specifically comprise: the dutycycle improving described VFD anode or grid high level; Increase the anode of described VFD or the level value of grid high level; Increase the anode of described VFD or the difference between grid high level and negative electrode level; Increase the driving voltage at the negative electrode two ends of described VFD.
In the present embodiment, reduce the driving intensity of described VFD, specifically comprise: the dutycycle reducing described VFD anode or grid high level; Reduce the anode of described VFD or the level value of grid high level; Reduce the anode of described VFD or the difference between grid high level and negative electrode level; Reduce the driving voltage at the negative electrode two ends of described VFD.
Step 304: judge whether the brightness of the VFD after adjusting exists error compared with the normal brightness data preset; If there is error, then perform step 301, if there is no error, then perform step 305: drive intensity adjustment to terminate.
On the basis of above-described embodiment, when described normal brightness data are default span, described default span has default higher limit and lower limit.If the intrinsic brilliance data of described VFD are greater than the higher limit of default span, reduce the driving intensity of described VFD; If the intrinsic brilliance data of described VFD are less than the lower limit of default span, strengthen the driving intensity of described VFD.
Embodiments provide a kind of control method of VFD brightness, the basis of above-described embodiment is optimized, the present embodiment can solve the inconsistent problem of VFD product luminosity, improves the consistance of VFD product luminosity.
Embodiment four
Fig. 4 is the structured flowchart of the control device of a kind of VFD brightness that the embodiment of the present invention four provides, and this device is located in VFD product, and in application the present invention, the method for above-described embodiment carries out the control of VFD brightness, and as shown in Figure 4, described device 400 comprises:
Brightness data acquiring unit 401, for detecting the intrinsic brilliance of VFD, obtains the intrinsic brilliance data of described VFD;
Contrast unit 402, for contrasting the intrinsic brilliance data of described VFD and the normal brightness data preset;
Drive intensity adjustment unit 403, for adjusting according to the driving intensity of result to described VFD of contrast, to make the intrinsic brilliance data of the described VFD after adjustment and the normal brightness data consistent preset.
The embodiment of the present invention adopts above-mentioned device to carry out the control of VFD brightness, can detect the intrinsic brilliance of VFD, obtains the intrinsic brilliance data of described VFD; The intrinsic brilliance data of described VFD and the normal brightness data preset are contrasted; The driving intensity of result to described VFD according to contrast adjusts, to make the intrinsic brilliance data of the described VFD after adjustment and the normal brightness data consistent preset.The embodiment of the present invention can solve the inconsistent problem of VFD product luminosity, improves the consistance of VFD product luminosity.
On the basis of above-described embodiment, described device also comprises
Error judgment unit 404, for adjusting in the described driving intensity of result to described VFD according to contrast, after the intrinsic brilliance data making the described VFD after adjustment and the normal brightness data consistent preset, if the brightness of the VFD after adjustment is compared with the normal brightness data preset, there is error, then return the intrinsic brilliance detecting VFD, obtain the operation of the intrinsic brilliance data of described VFD.
Wherein, described normal brightness data are preset value or default span, and described default span has default higher limit and lower limit.
On the basis of above-described embodiment, described driving intensity adjustment unit 403 comprises:
First drives intensity adjustment subelement 405 and second to drive intensity adjustment subelement 406;
When described normal brightness data are preset value, described first drives intensity adjustment subelement 405, if be greater than preset value for the intrinsic brilliance data of described VFD, strengthens the driving intensity of described VFD; If the intrinsic brilliance data of described VFD are less than preset value, reduce the driving intensity of described VFD;
When described normal brightness data are default span, second drives intensity adjustment subelement 406, if be greater than the higher limit of default span for the intrinsic brilliance data of described VFD, reduces the driving intensity of described VFD; If the intrinsic brilliance data of described VFD are less than the lower limit of default span, strengthen the driving intensity of described VFD.
On the basis of above-described embodiment, strengthen the driving intensity of described VFD, specifically comprise: improve the anode of described VFD or the dutycycle of grid high level; Increase the anode of described VFD or the level value of grid high level; Increase the anode of described VFD or the difference between grid high level and negative electrode level; Increase the driving voltage at the negative electrode two ends of described VFD;
Reduce the driving intensity of described VFD, specifically comprise: reduce the anode of described VFD or the dutycycle of grid high level; Reduce the anode of described VFD or the level value of grid high level; Reduce the anode of described VFD or the difference between grid high level and negative electrode level; Reduce the driving voltage at the negative electrode two ends of described VFD.
Embodiments provide a kind of control device of VFD brightness, provide more functional unit, and each functional unit is optimized, the problem that VFD product luminosity is inconsistent can be solved, improve the consistance of VFD product luminosity.
Note, above are only preferred embodiment of the present invention and institute's application technology principle.Skilled person in the art will appreciate that and the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute and can not protection scope of the present invention be departed from.Therefore, although be described in further detail invention has been by above embodiment, the present invention is not limited only to above embodiment, when not departing from the present invention's design, can also comprise other Equivalent embodiments more, and scope of the present invention is determined by appended right.
Claims (10)
1. a control method for vacuum fluorescent display screen VFD brightness, is characterized in that, comprising:
Detect the intrinsic brilliance of VFD, obtain the intrinsic brilliance data of described VFD;
The intrinsic brilliance data of described VFD and the normal brightness data preset are contrasted;
The driving intensity of result to described VFD according to contrast adjusts, to make the intrinsic brilliance data of the described VFD after adjustment and the normal brightness data consistent preset.
2. method according to claim 1, is characterized in that, adjusts in the described driving intensity of result to described VFD according to contrast, after the intrinsic brilliance data making the described VFD after adjustment and the normal brightness data consistent preset, also comprises:
If the brightness of the VFD after adjustment, compared with the normal brightness data preset, exists error, then return the intrinsic brilliance detecting VFD, obtain the operation of the intrinsic brilliance data of described VFD.
3. method according to claim 1, is characterized in that, described normal brightness data are preset value or default span, and described default span has default higher limit and lower limit.
4. method according to claim 3, is characterized in that,
When described normal brightness data are preset value; The described driving intensity of result to described VFD according to contrast adjusts, to make the intrinsic brilliance data of the described VFD after adjustment and the normal brightness data consistent preset; Comprise: if the intrinsic brilliance data of described VFD are greater than preset value, strengthen the driving intensity of described VFD; If the intrinsic brilliance data of described VFD are less than preset value, reduce the driving intensity of described VFD;
When described normal brightness data are default span, the described driving intensity of result to described VFD according to contrast adjusts, to make the intrinsic brilliance data of the described VFD after adjustment and the normal brightness data consistent preset; Comprise: if the intrinsic brilliance data of described VFD are greater than the higher limit of default span, reduce the driving intensity of described VFD; If the intrinsic brilliance data of described VFD are less than the lower limit of default span, strengthen the driving intensity of described VFD.
5. method according to claim 4, is characterized in that, strengthens the driving intensity of described VFD, specifically comprises: improve the anode of described VFD or the dutycycle of grid high level; Increase the anode of described VFD or the level value of grid high level; Increase the anode of described VFD or the difference between grid high level and negative electrode level; Increase the driving voltage at the negative electrode two ends of described VFD;
Reduce the driving intensity of described VFD, specifically comprise: reduce the anode of described VFD or the dutycycle of grid high level; Reduce the anode of described VFD or the level value of grid high level; Reduce the anode of described VFD or the difference between grid high level and negative electrode level; Reduce the driving voltage at the negative electrode two ends of described VFD.
6. a device for VFD brilliance control, is characterized in that, comprising:
Brightness data acquiring unit, for detecting the intrinsic brilliance of VFD, obtains the intrinsic brilliance data of described VFD;
Contrast unit, for contrasting the intrinsic brilliance data of described VFD and the normal brightness data preset;
Drive intensity adjustment unit, for adjusting according to the driving intensity of result to described VFD of contrast, to make the intrinsic brilliance data of the described VFD after adjustment and the normal brightness data consistent preset.
7. device according to claim 6, is characterized in that, also comprises
Error judgment unit, for adjusting in the described driving intensity of result to described VFD according to contrast, after the intrinsic brilliance data making the described VFD after adjustment and the normal brightness data consistent preset, if the brightness of the VFD after adjustment is compared with the normal brightness data preset, there is error, then return the intrinsic brilliance detecting VFD, obtain the operation of the intrinsic brilliance data of described VFD.
8. device according to claim 6, is characterized in that, described normal brightness data are preset value or default span, and described default span has default higher limit and lower limit.
9. device according to claim 8, is characterized in that, described driving intensity adjustment unit comprises: first drives intensity adjustment subelement and second to drive intensity adjustment subelement;
When described normal brightness data are preset value, described first drives intensity adjustment subelement, if be greater than preset value for the intrinsic brilliance data of described VFD, strengthens the driving intensity of described VFD; If the intrinsic brilliance data of described VFD are less than preset value, reduce the driving intensity of described VFD;
When described normal brightness data are default span, second drives intensity adjustment subelement, if be greater than the higher limit of default span for the intrinsic brilliance data of described VFD, reduces the driving intensity of described VFD; If the intrinsic brilliance data of described VFD are less than the lower limit of default span, strengthen the driving intensity of described VFD.
10. device according to claim 9, is characterized in that,
Strengthen the driving intensity of described VFD, specifically comprise: improve the anode of described VFD or the dutycycle of grid high level; Increase the anode of described VFD or the level value of grid high level; Increase the anode of described VFD or the difference between grid high level and negative electrode level; Increase the driving voltage at the negative electrode two ends of described VFD;
Reduce the driving intensity of described VFD, specifically comprise: reduce the anode of described VFD or the dutycycle of grid high level; Reduce the anode of described VFD or the level value of grid high level; Reduce the anode of described VFD or the difference between grid high level and negative electrode level; Reduce the driving voltage at the negative electrode two ends of described VFD.
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Cited By (1)
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| CN113645463A (en) * | 2021-08-11 | 2021-11-12 | 北京淳中科技股份有限公司 | Drive grade updating method and device, electronic equipment and readable storage medium |
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Application publication date: 20150826 |