CN107911746A - 4k LCD TV flicker debugging apparatus and method - Google Patents
4k LCD TV flicker debugging apparatus and method Download PDFInfo
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- CN107911746A CN107911746A CN201711217040.1A CN201711217040A CN107911746A CN 107911746 A CN107911746 A CN 107911746A CN 201711217040 A CN201711217040 A CN 201711217040A CN 107911746 A CN107911746 A CN 107911746A
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- Prior art keywords
- flicker
- debugging
- electric voltage
- common electric
- liquid crystal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
- H04N21/42204—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/4425—Monitoring of client processing errors or hardware failure
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Software Systems (AREA)
- Computer Networks & Wireless Communication (AREA)
- Databases & Information Systems (AREA)
- Human Computer Interaction (AREA)
- Controls And Circuits For Display Device (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
The invention discloses a kind of 4k LCD TVs flicker debugging apparatus and method, by way of software, index panel joins name, finds the corresponding flicker pictures being stored in memory (eMMC), is exported to 4k liquid crystal displays and shown by 4k display programs；At the same time recall automatically flicker debugging the page, adjusted by remote controler to picture do not flicker or flicker it is most slight；Debugging result is preserved by remote controler and is exited.The present invention simplifies existing flicker debugging systems and adds data check function, improves generation debugging efficiency and avoids the maloperation to VCOM, ensure that complete machine outgoing.
Description
Technical field
The present invention relates to liquid crystal tv technology, and in particular to a kind of 4k LCD TVs flicker debugging apparatus and method.
Background technology
Liquid crystal display (liquid crystal display, LCD) technology is widely used shows industry in TV.By
Liquid crystal polarization can be made by applying DC level for a long time in liquid crystal, cause display abnormal；So liquid crystal needs ceaselessly to turn over when working
Turn.Liquid crystal display normal work needs to provide two groups of gamma (grayscale) voltages and a common reference voltage VCOM at this stage, wherein
Common reference voltage VCOM is substantially set in the centre position of two groups of gamma (grayscale) voltage.Worked normally when liquid crystal display enters
Pattern, two groups of gamma (grayscale) voltages can replace to charge for liquid crystal pixel with reference to common reference voltage VCOM.Here VCOM electricity
Buckling obtains extremely important, if be deviated, can cause and change face flicker (flicker), the display problem such as color exception.
Based on the importance of above-mentioned common electric voltage VCOM, therefore public affairs can be exclusively carried out in the LCD TV complete machine generation debugging stage
The debugging of common voltage VCOM, this debugging process are known as flicker debugging.
Shown in Figure 1, Fig. 1 is the schematic diagram of existing flicker debugging apparatus 100.Existing flicker debugging systems
100 include signal generator 110, LCD TV 120 to be debugged.Wherein signal generator 110 can produce needs export with
The corresponding flicker test pictures of LCD TV 120 (test pattern).When needing to be debugged, first by signal
Generator 110 is connected with LCD TV 120 by HDMI wire, then carries out debugging operations by remote controler by commissioning staff.
Shown in Figure 2, Fig. 2 debugs flow diagram for existing flicker.Existing flicker debugging flow includes altogether
Operating procedure 1 and its corresponding software flow a, operating procedure 2 and its corresponding software flow b, operating procedure 3 and its phase
Corresponding software flow c, operating procedure 4 and its corresponding software flow d.
When LCD TV complete machine carries out flicker debugging, the mode for being first according to Fig. 1 connects completion test system.Connect
Commissioning staff's remote controller, sends specific remote signal A, opens software flow b；Remote signal B, opens software flow c；
Remote signal C, opens software flow d.After operation more than performed, VCOM values are preserved, exit debugging.
In above-mentioned existing flicker adjustment methods and device, due to the upset mode and pixel arrangement of different liquid crystal displays
Mode is different, causes flicker debugging pictures also to differ.Need ceaselessly to carry out letter if replacing LCD TV liquid crystal display
Number generator 100 upgrades, to be adapted to different liquid crystal displays.Production cost is so not only added, can also influence to generate the cycle.Together
When, signal generator 100, which is ceaselessly plugged, in debugging process is connected on different LCD TVs to be debugged, production efficiency
It is affected.
Particularly, since 4k LCD TV proportions are increasing.Meanwhile TCON-less types in 4k LCD TVs
Accounting also increasing sharply.But there is presently no more preferably, suitable for 4k LCD TVs TCON-less types
Flicker adjustment methods.
The content of the invention
The present invention overcomes the deficiencies in the prior art, there is provided a kind of 4k LCD TVs flicker debugging apparatus and method, are used
In reducing debugging step, debugging efficiency is improved, avoids the maloperation to VCOM.
In view of the above problem of the prior art, disclosed one side, the present invention use following technology according to the present invention
Scheme：
A kind of 4k LCD TVs flicker adjustment methods, the flicker test pictures of the different liquid crystal displays of correspondence are deposited in advance
Storage into the machine core board storage unit eMMC of LCD TV, when SoC modules receive flicker debugging start instruction, then open
The step of beginning debugging, debugging, includes：
Step 1：SoC modules receive remote signal A, start picture and automatically generate flow；
Step 2：Start 4k display programs；
Step 3：SoC modules receive remote signal B, change common electric voltage VCOM values；
Step 4：SoC modules receive remote signal C, log-on data verifying function.
In order to which the present invention is better achieved, further technical solution is：
An embodiment according to the present invention, in the step 1, SoC modules read flag byte, the mark first
Byte is used for the index as picture in crawl machine core board storage unit eMMC, is completed when particular picture captures, into next step.
Another according to the present invention embodiment, in the step 2, the 4k display programs will crawl after starting
Picture be sent into liquid crystal display and shown, and flicker Debugging interfaces start, public in liquid crystal screen display after start completion
Voltage VCOM currencys, common electric voltage VCOM maximums and common electric voltage VCOM minimum values.
Another according to the present invention embodiment, further includes in the step 3：
Corresponding common electric voltage VCOM registers also change.
Another according to the present invention embodiment, in the step 4, by the common electric voltage VCOM values after debugging with debugging
Preceding common electric voltage VCOM values compare, if identical, terminate to debug；If it is different, first checking whether to go beyond the scope, exceed
Scope common electric voltage VCOM values recall to state before debugging automatically, and wait continues to debug；If without departing from scope, start common electric voltage
VCOM is stored, by common electric voltage VCOM value persistences.
Another embodiment according to the present invention, the transmission dress of the remote signal A, remote signal B and remote signal C
It is set to remote controler.
Another according to the present invention embodiment, preserves to EEPROM after the completion of the VCOM data checks.
The present invention can also be：
A kind of 4k LCD TVs flicker debugging apparatus, including：
Flicker test pictures memory modules, for storing the flicker test pictures of different liquid crystal displays；
Module data memory module, for preset module data；
4k display program modules, for specific flicker pictures input 4k liquid crystal displays to be shown；
Data check module, judges for debugging front and rear VCOM data.
Another embodiment according to the present invention, the flicker test pictures are named according to module name.
Another according to the present invention embodiment, the module name in the module data memory module are used for as indicating
Byte, flicker test pictures are mapped one by one with liquid crystal display.
Compared with prior art, one of beneficial effects of the present invention are：
1) it can realize that 4k LCD TVs flicker is debugged by 4k display programs；
2) cancel the signal generator needed in existing flicker debugging, optimize flicker debugging apparatus, reduce debugging
Step, improves formation efficiency；
3) by technical scheme, different flicker pictures can be indexed, are achieved that under same software
The flicker debugging of corresponding different liquid crystal display；
4) by technical scheme, VCOM data validities can be protected, are prevented in flicker debugging process
VCOM write-ins are interfered and make corrupt data, cause LCD TV display abnormal.
Brief description of the drawings
, below will be to embodiment for clearer explanation present specification embodiment or technical solution of the prior art
Or attached drawing is briefly described needed in the description of the prior art, it should be apparent that, drawings in the following description are only
It is the reference to some embodiments in present specification, for those skilled in the art, what is do not made the creative labor
In the case of, other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is existing flicker debugging apparatus schematic diagram.
Fig. 2 debugs flow diagram for existing flicker.
Fig. 3 is the flicker debugging apparatus schematic diagrames of one embodiment of the invention.
Fig. 4 is that the flicker of one embodiment of the invention debugs flow diagram.
Fig. 5 is that the flicker pictures of one embodiment of the invention automatically generate flow diagram.
Embodiment
The present invention is described in further detail with reference to embodiment, but the implementation of the present invention is not limited to this.
A kind of 4k LCD TVs flicker adjustment methods, the flicker test pictures of the different liquid crystal displays of correspondence are deposited in advance
Store up into LCD TV eMMC, when SoC receives the instruction of flicker debugging beginnings, beginning is whole to debug, including：
The first step：SoC receives remote signal A, starts picture and automatically generates flow.In this step, SoC can be read first
Flag byte, the byte are used as the index of picture in crawl eMMC.Completed when particular picture captures, into next step.
Second step：Start 4k display programs.The picture of crawl can be sent into liquid crystal by 4k display programs after starting
Screen is shown.At the same time, flicker Debugging interfaces start, in liquid crystal screen display VCOM currencys after start completion,
VCOM maximums and VCOM minimum values.
3rd step：SoC receives remote signal B, changes VCOM values.Corresponding VCOM registers also change.
4th step：SoC receives remote signal C, log-on data verifying function.Before VCOM values and debugging after debugging
VCOM values compare, if identical, directly terminate；If it is different, first checking whether to go beyond the scope, the VCOM values that go beyond the scope are automatic
State before debugging is recalled to, wait continues to debug；If without departing from scope, start VCOM storages, by VCOM value persistences.
Wherein, the dispensing device of remote signal A, remote signal B and remote signal C are remote controler.
It is that specific flicker test pictures are indexed by module name and call it that flicker pictures, which automatically generate,.
Preserved after the completion of VCOM data checks to EEPROM.
Whole flow process terminates.
A kind of 4k LCD TVs flicker debugging apparatus, including：
Flicker test pictures memory modules, for storing the flicker test pictures of different liquid crystal displays.Flicker is surveyed
Attempt piece to be named according to module name；Flicker test pictures are 4k pictures.It can be called according to picture name.
Module data memory module, for preset module data.Module name therein is used as flag byte, will
Flicker test pictures map one by one with liquid crystal display.
4k display programs, effect are to be shown specific flicker pictures input 4k liquid crystal displays；Display
Flicker debugs the page, display VCOM currencys, VCOM maximums and VCOM minimum values.
Data check module, VCOM data judge before and after debugging.
Embodiment
As shown in figure 3, Fig. 3 is the flicker debugging apparatus schematic diagrames that use in the present invention, itself and existing flicker tune
Trial assembly, which is put, to compare, and eliminates signal generator, retains LCD TV 120 and remote control module.It should be strongly noted that scheming
LCD TV 120 in 3 has power management module (PMIC), can produce common electric voltage VCOM；Meanwhile power management module
With output adjusting and data storage function.Power management module is communicated with movement (SoC) module by iic bus.Debugging
Before, it would be possible to all machine core board storage unit (eMMC) is arrived in storage to the flicker test pictures used.
As shown in figure 4, the flicker that Fig. 4, which is the present invention, to be used debugs flow diagram；When core module receives remote control
After signal A, Booting sequence e.
As shown in figure 5, Fig. 5, which is the flicker pictures that the present invention uses, automatically generates flow diagram.
Into after flow e, SoC reads screen ginseng name (Module name) first, then is referred to as indexing with screen ginseng name, grabs
Take the specific flicker pictures (being assumed to be Pattern A) in storage unit.Then, 4k display programs start and will grab
Get picture (being assumed to be pattern A) and be sent to liquid crystal display and shown.It should be strongly noted that 4k display journeys here
Sequence can support 4k pictures to handle, and ensure to reach positive effect when carrying out 4k LCD TVs flicker debugging.
Again as shown in figure 4, after flow e is terminated, and then can Booting sequence f, by flicker debug the page (including work as
Preceding VCOM values, VCOM maximums, VCOM minimum values).After start completion, movement prepares to receive remote signal B, is remotely controlled when receiving
After signal B, into flow g_1 and g_2.It is worth noting that, show value is linkage with VCOM register values, but at this time
VCOM memories do not change.
Such as Fig. 4, after remote signal C is received by movement, log-on data checking process h.Data check flow h includes stream
Journey h_1, h_2 and h_3.
VCOM values before VCOM values debugging after debugging can be compared by h_1, if comparative result is identical, whole stream
Journey terminates.If comparative result is difference, into flow h_2.
Flow h_2 then can once be judged.Judge that the VCOM after debugging is above scope, i.e., whether be more than VCOM most
It is big to be worth or less than VCOM minimum values.The result of flow h_2 is yes, and Booting sequence h_4 returns to flow f.The result of flow h_2
It is no, Booting sequence h_3, receives movement and send storage control command, the value in VCOM registers is covered into VCOM memories
In.Terminate flow.
Terminate whole debugging flow.
It can be seen from the above embodiments that, by technical scheme, can overcome the shortcomings of existing scheme it
Place, while provide a kind of reliable, convenient flicker adjustment methods.Even more noteworthy, the applicable 4k TVs of the present invention
The method of flicker.
For to sum up, by way of software, index panel ginseng name, finds corresponding be stored in memory (eMMC)
Flicker pictures, are exported to 4k liquid crystal displays by 4k display programs and shown；Recall the flicker debugging pages automatically at the same time,
Adjusted by remote controler to picture do not flicker or flicker it is most slight；Debugging result is preserved by remote controler and is exited.Purpose is
VCOM values are set to a suitable position, make LCD TV flicker most slight.This invention simplifies existing flicker tune
Test system, cancels external flicker signal generators, reduces operating procedure (operation of signal wire insertion)；Add data check work(
Can, the risk of VCOM data transfer errors after the completion of reduction debugging.
" one embodiment " for being spoken of in the present specification, " another embodiment ", " embodiment ", etc., refer to tying
Specific features, structure or the feature for closing embodiment description are included at least one embodiment of the application generality description
In.It is not necessarily to refer to same embodiment that statement of the same race, which occur, in multiple places in the description.Appoint furthermore, it is understood that combining
When one embodiment describes a specific features, structure or feature, what is advocated is this to realize with reference to other embodiment
Feature, structure or feature are also fallen within the scope of the present invention.
Although reference be made herein to invention has been described for multiple explanatory embodiments of the invention, however, it is to be understood that
Those skilled in the art can be designed that a lot of other modifications and embodiment, these modifications and embodiment will fall in this Shen
Please be within disclosed spirit and spirit.More specifically, can be to master in the range of disclosure and claim
The building block and/or layout for inscribing composite configuration carry out a variety of variations and modifications.Except what is carried out to building block and/or layout
Outside variations and modifications, to those skilled in the art, other purposes also will be apparent.
Claims (10)
1. a kind of 4k LCD TVs flicker adjustment methods, it is characterised in that by the flicker test charts of the different liquid crystal displays of correspondence
Piece is stored into the machine core board storage unit eMMC of LCD TV in advance, when SoC modules receive the finger of flicker debugging beginnings
The step of order, then start to debug, debugging includes：
Step 1：SoC modules receive remote signal A, start picture and automatically generate flow；
Step 2：Start 4k display programs；
Step 3：SoC modules receive remote signal B, change common electric voltage VCOM values；
Step 4：SoC modules receive remote signal C, log-on data verifying function.
2. 4k LCD TVs flicker adjustment methods according to claim 1, it is characterised in that in the step 1, SoC
Module reads flag byte first, and the flag byte is used for the index as picture in crawl machine core board storage unit eMMC,
Completed when particular picture captures, into next step.
3. 4k LCD TVs flicker adjustment methods according to claim 1, it is characterised in that described in the step 2
The picture of crawl is sent into liquid crystal display after starting and is shown by 4k display programs, and flicker Debugging interfaces start, and open
It is minimum in liquid crystal screen display common electric voltage VCOM currencys, common electric voltage VCOM maximums and common electric voltage VCOM after the completion of dynamic
Value.
4. 4k LCD TVs flicker adjustment methods according to claim 1, it is characterised in that also wrapped in the step 3
Include：
Corresponding common electric voltage VCOM registers also change.
5. 4k LCD TVs flicker adjustment methods according to claim 1, it is characterised in that in the step 4, will adjust
Common electric voltage VCOM values after examination, if identical, terminate to debug compared with the common electric voltage VCOM values before debugging；If no
Together, first check whether to go beyond the scope, the common electric voltage VCOM values that go beyond the scope recall to state before debugging automatically, and wait continues to adjust
Examination；If without departing from scope, start common electric voltage VCOM storages, by common electric voltage VCOM value persistences.
6. 4k LCD TVs flicker adjustment methods according to claim 1, it is characterised in that the remote signal A, distant
The dispensing device for controlling signal B and remote signal C is remote controler.
7. 4k LCD TVs flicker adjustment methods according to claim 1, it is characterised in that the VCOM data checks
After the completion of preserve to EEPROM.
A kind of 8. 4k LCD TVs flicker debugging apparatus, it is characterised in that including：
Flicker test pictures memory modules, for storing the flicker test pictures of different liquid crystal displays；
Module data memory module, for preset module data；
4k display program modules, for specific flicker pictures input 4k liquid crystal displays to be shown；
Data check module, judges for debugging front and rear VCOM data.
9. 4k LCD TVs flicker debugging apparatus according to claim 6, it is characterised in that the flicker tests
Picture is named according to module name.
10. 4k LCD TVs flicker debugging apparatus according to claim 6, it is characterised in that the module data are deposited
Chu Mo module names in the block are used to be used as flag byte, and flicker test pictures are mapped one by one with liquid crystal display.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711217040.1A CN107911746A (en) | 2017-11-28 | 2017-11-28 | 4k LCD TV flicker debugging apparatus and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711217040.1A CN107911746A (en) | 2017-11-28 | 2017-11-28 | 4k LCD TV flicker debugging apparatus and method |
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| CN201711217040.1A Pending CN107911746A (en) | 2017-11-28 | 2017-11-28 | 4k LCD TV flicker debugging apparatus and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112233629A (en) * | 2020-10-14 | 2021-01-15 | 深圳市华星光电半导体显示技术有限公司 | Debugging method and system for preventing panel from flickering |
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Application publication date: 20180413 |